10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Mark One)

x Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Quarterly Period Ended March 30, 2012

¨ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Commission File No. 000-25826

HARMONIC INC.

(Exact name of registrant as specified in its charter)

Delaware	77-0201147
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

4300 North First Street

San Jose, CA 95134

(408) 542-2500

(Address, including zip code, and telephone number,

including area code, of registrant’s principal executive offices)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

The number of shares of the registrant’s Common Stock, $.001 par value, outstanding on April 23, 2012 was 117,573,225.

TABLE OF CONTENTS

PART I
ITEM 1. FINANCIAL STATEMENTS (UNAUDITED)	3
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	20
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	29
ITEM 4. CONTROLS AND PROCEDURES	30
PART II
ITEM 1. LEGAL PROCEEDINGS	30
ITEM 1A. RISK FACTORS	31
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	51
ITEM 3. DEFAULTS UPON SENIOR SECURITIES ITEM 4. MINE SAFETY	51 51
ITEM 5. OTHER INFORMATION	51
SIGNATURES	53

2

PART I

FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

HARMONIC INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(UNAUDITED)

	March 30, 2012			December 31, 2011
	(In thousands, except par value amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	81,019		$	90,983
Short-term investments		87,440			70,854
Accounts receivable, net		111,753			109,886
Inventories		65,545			70,649
Deferred income taxes		29,897			28,032
Prepaid expenses and other current assets		18,893			21,474
Total current assets		394,547			391,878
Property and equipment, net		40,439			40,469
Goodwill		212,485			212,417
Intangibles, net		80,111			87,651
Other assets		2,473			1,751
Total assets	$	730,055		$	734,166
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	31,481		$	30,537
Income taxes payable		871			2,290
Deferred revenue		35,803			33,095
Accrued liabilities		39,050			46,896
Total current liabilities		107,205			112,818
Income taxes payable, long-term		47,809			47,307
Deferred income taxes, long-term		1,259			655
Other non-current liabilities		9,660			9,070
Total liabilities		165,933			169,850
Commitments and contingencies (Note 13)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding		—			—
Common stock, $0.001 par value, 150,000 shares authorized; 117,540 and 116,257 shares issued and outstanding at March 30, 2012 and December 31, 2011, respectively		118			116
Capital in excess of par value		2,440,158			2,433,164
Accumulated deficit		(1,875,617	)		(1,868,089	)
Accumulated other comprehensive loss		(537	)		(875	)
Total stockholders’ equity		564,122			564,316
Total liabilities and stockholders’ equity	$	730,055		$	734,166

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

HARMONIC INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(UNAUDITED)

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except per share amounts)
Product revenue	$	110,367		$	115,867
Service revenue		17,354			16,968
Net revenue		127,721			132,835
Product cost of revenue		66,936			64,751
Service cost of revenue		7,123			6,229
Total cost of revenue		74,059			70,980
Gross profit		53,662			61,855
Operating expenses:
Research and development		27,829			26,149
Selling, general and administrative		32,311			33,564
Amortization of intangibles		2,179			2,229
Total operating expenses		62,319			61,942
Loss from operations		(8,657	)		(87	)
Interest income, net		119			92
Other income (expense), net		403			(107	)
Loss before income taxes		(8,135	)		(102	)
Benefit from income taxes		(607	)		(618	)
Net income (loss)	$	(7,528	)	$	516
Net income (loss) per share:
Basic	$	(0.06	)	$	0.00
Diluted	$	(0.06	)	$	0.00
Weighted average shares:
Basic		117,275			113,836
Diluted		117,275			116,109

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

HARMONIC INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(UNAUDITED)

	Three months ended
	March 30, 2012			April 1, 2011
Net income (loss)	$	(7,528	)	$	516
Change in unrealized loss on investments, net		24			(11	)
Foreign currency translation		314			454
Total comprehensive income (loss)	$	(7,190	)	$	959

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

HARMONIC INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands)
Cash flows from operating activities:
Net income (loss)	$	(7,528	)	$	516
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of intangibles		7,539			7,371
Depreciation		3,798			3,403
Stock-based compensation		4,800			6,002
Net loss on disposal of fixed assets		—			61
Deferred income taxes		(1,262	)		76
Provision for inventories		915			2,640
Allowance for doubtful accounts, returns and discounts		(684	)		(510	)
Other non-cash adjustments, net		(8	)		121
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable		(1,179	)		(9,767	)
Inventories		4,189			(3,372	)
Prepaid expenses and other assets		1,892			998
Accounts payable		936			(3,616	)
Deferred revenue		2,740			4,430
Income taxes payable		(929	)		(6,748	)
Accrued and other liabilities		(7,255	)		(9,288	)
Net cash provided by (used in) operating activities		7,964			(7,683	)
Cash flows from investing activities:
Purchases of investments		(36,654	)		(41,813	)
Proceeds from maturities of investments		18,791			6,873
Proceeds from sales of investments		1,042			1,026
Acquisition of property and equipment		(3,715	)		(4,957	)
Net cash used in investing activities		(20,536	)		(38,871	)
Cash flows from financing activities:
Proceeds from issuance of common stock, net		2,479			9,570
Net cash provided by financing activities		2,479			9,570
Effect of exchange rate changes on cash and cash equivalents		129			123
Net decrease in cash and cash equivalents		(9,964	)		(36,861	)
Cash and cash equivalents at beginning of period		90,983			96,533
Cash and cash equivalents at end of period	$	81,019		$	59,672

The accompanying notes are an integral part of these condensed consolidated financial statements.

6

HARMONIC INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 1: BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation. The accompanying unaudited condensed consolidated financial statements include all adjustments (consisting only of normal recurring adjustments) which Harmonic Inc. (“Harmonic,” or the “Company”) considers necessary for a fair statement of the results of operations for the interim periods covered and the consolidated financial condition of the Company at the date of the balance sheets. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on February 29, 2012 (“2011 Form 10-K”). The interim results presented herein are not necessarily indicative of the results of operations that may be expected for the full fiscal year ending December 31, 2012, or any other future period. The Company’s fiscal quarters are based on 13-week periods, except for the fourth quarter which ends on December 31.

The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The year-end condensed balance sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“US GAAP”).

Use of Estimates. The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Significant Accounting Policies. The Company’s significant accounting policies are described in Note 1 to its audited Consolidated Financial Statements included in its 2011 Form 10-K. There have been no significant changes to these policies during the three months ended March 30, 2012.

NOTE 2: RECENT ACCOUNTING PRONOUNCEMENTS

In May 2011, the Financial Accounting Standards Board (“FASB”) issued additional guidance on fair value disclosures. This guidance contains certain updates to the measurement guidance, as well as enhanced disclosure requirements. The most significant change in disclosures is an expansion of the information required for Level 3 measurements, including enhanced disclosure for: (1) the valuation processes used by the reporting entity; and (2) the sensitivity of the fair value measurement to changes in unobservable inputs and the interrelationships between those unobservable inputs, if any. This guidance is effective for interim and annual periods beginning on or after December 15, 2011 and early adoption is prohibited. The Company adopted these reporting requirements in the first quarter of 2012. Adoption of these new reporting requirements did not have any impact on the Company because the Company does not hold any assets or liabilities for which fair value is based on Level 3 measurements.

In June 2011, the FASB issued guidance on the presentation of comprehensive income. This guidance requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The guidance eliminates the option to present the components of comprehensive income as part of the statement of changes in shareholders’ equity. In December 2011, the FASB issued guidance which indefinitely defers the effective date of the requirement to disclose on the face of the financial statements the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income. The guidance must be applied retrospectively, and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. The Company adopted this new guidance in the first quarter of 2012.

7

In September 2011, the FASB approved an accounting standard update intended to simplify how an entity tests goodwill for impairment. The amendment allows an entity to first assess qualitative factors to determine whether it is necessary to perform the two-step annual goodwill impairment test. An entity is required to perform step one only if the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. The Company will apply this guidance when it performs its annual goodwill impairment test in the fourth quarter of 2012.

NOTE 3: ACQUISITIONS

On September 15, 2010, Harmonic completed its acquisition of Omneon, Inc, at which time the holders of Omneon capital stock, including outstanding Omneon stock options and restricted stock units were entitled to receive aggregate consideration of approximately $194.0 million in cash and up to 17,128,176 shares of Harmonic common stock. To secure post-closing indemnification obligations of the holders of Omneon capital stock and vested and outstanding Omneon stock options and vested restricted stock units, Harmonic deposited into escrow an aggregate of approximately $21.0 million in cash and 1,926,920 shares of Harmonic common stock that would otherwise be issued to the holders of Omneon capital stock and vested and outstanding Omneon stock options and vested restricted stock units. In the first quarter of 2012, the Company submitted an indemnification claim for reimbursement from escrow and received reimbursement of $0.8 million, including $0.5 million of cash and 40,372 shares of common stock valued at $0.3 million. The cash is included in the balance sheet as of March 30, 2012, and the return of shares is reflected as a reduction in common stock and additional paid-in-capital. The reimbursement was for previously expensed legal and tax costs incurred by the Company following the date of acquisition. The indemnification period ended on March 15, 2012, and the cash and shares remaining in escrow were distributed to the holders of Omneon capital stock.

NOTE 4: FAIR VALUE

The applicable accounting guidance establishes a framework for measuring fair value and required disclosure about the fair value measurements of assets and liabilities. This guidance requires the Company to classify and disclose assets and liabilities measured at fair value on a recurring basis, as well as fair value measurements of assets and liabilities measured on a nonrecurring basis in periods subsequent to initial measurement, in a three-tier fair value hierarchy as described below.

The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants on the measurement date.

Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The guidance describes three levels of inputs that may be used to measure fair value:

• Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

• Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. The Company primarily uses broker quotes for valuation of its short-term investments. Forward exchange contracts are classified as Level 2 because they are valued using quoted market prices and other observable data for similar instruments in an active market.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The Company uses the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. During the three months ended March 30, 2012, there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

8

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2012 and December 31, 2011, based on the three-tier fair value hierarchy:

	Total		Level 1		Level 2		Level 3
	(In thousands)
March 30, 2012
Assets
Money market funds	$	37,680	$	37,680	$	—	$	—
Certificate of deposit		1,325		—		1,325		—
State, municipal and local government agencies bonds		47,825		—		47,825		—
Corporate bonds		22,213		—		22,213		—
U.S. federal government bonds		5,896		5,896		—		—
Commercial paper		10,181		—		10,181		—
Foreign exchange forward contracts		169		—		169		—
Total assets measured and recorded at fair value	$	125,289	$	43,576	$	81,713	$	—
Liabilities
Foreign exchange forward contracts	$	660	$	—	$	660	$	—
Total liabilities measured and recorded at fair value	$	660	$	—	$	660	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
December 31, 2011
Assets
Money market funds	$	62,131	$	62,131	$	—	$	—
State, municipal and local government agencies bonds		38,825		—		38,825		—
Corporate bonds		18,604		—		18,604		—
U.S. federal government bonds		9,230		9,230		—		—
Commercial paper		4,195		—		4,195		—
Foreign exchange forward contracts		373		—		373		—
Total assets measured and recorded at fair value	$	133,358	$	71,361	$	61,997	$	—
Liabilities
Foreign exchange forward contracts	$	159	$	—	$	159	$	—
Total liabilities measured and recorded at fair value	$	159	$	—	$	159	$	—

At March 30, 2012 and December 31, 2011, maturities of short-term investments are as follows:

	March 30, 2012		December 31, 2011
	(In thousands)
Short-term investments:
Less than one year	$	69,085	$	43,470
Due in 1—2 years		18,355		27,384
Total short-term investments	$	87,440	$	70,854

9

The following is a summary of available-for-sale securities at March 30, 2012 and December 31, 2011:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(In thousands)
March 30, 2012
Certificate of deposit	$	1,324	$	1	$	—		$	1,325
State, municipal and local government agencies bonds		47,758		67		—			47,825
Corporate bonds		22,208		12		(7	)		22,213
U.S. federal government bonds		5,895		1		—			5,896
Commercial paper		10,181		—		—			10,181
Total	$	87,366	$	81	$	(7	)	$	87,440
December 31, 2011
State, municipal and local government agencies bonds	$	38,785	$	46	$	(6	)	$	38,825
Corporate bonds		18,613		6		(15	)		18,604
U.S. federal government bonds		9,226		4		—			9,230
Commercial paper		4,195		—		—			4,195
Total	$	70,819	$	56	$	(21	)	$	70,854

Impairment of Investments

Harmonic monitors its investment portfolio for impairment on a periodic basis. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. A decline of fair value below amortized costs of debt securities is considered other-than temporary if the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis. At the present time, the Company does not intend to sell its investments that have unrealized losses in accumulated other comprehensive loss. In addition, the Company does not believe that it is more likely than not that it will be required to sell its investments that have unrealized losses in accumulated other comprehensive loss before the Company recovers the principal amounts invested. The Company believes that the unrealized losses are temporary and do not require an other-than-temporary impairment, based on its evaluation of available evidence as of March 30, 2012.

As of March 30, 2012, there were no individual available-for-sale securities in a material unrealized loss position and the amount of unrealized losses on the total investment balance was insignificant.

10

NOTE 5: BALANCE SHEET

	March 30, 2012			December 31, 2011
	(In thousands)
Accounts receivable
Accounts receivable	$	119,320		$	118,138
Less: allowances for doubtful accounts , returns and discounts		(7,567	)		(8,252	)
	$	111,753		$	109,886
Inventories:
Raw materials	$	13,708		$	14,099
Work-in-process		3,354			4,250
Finished goods		48,483			52,300
	$	65,545		$	70,649
Property and equipment:
Furniture and fixtures	$	6,681		$	6,706
Machinery and equipment		101,379			97,916
Leasehold improvements		7,459			7,079
		115,519			111,701
Less: accumulated depreciation and amortization		(75,080	)		(71,232	)
	$	40,439		$	40,469

NOTE 6: GOODWILL AND IDENTIFIED INTANGIBLES

The following is a summary of identified intangible assets as of March 30, 2012 and December 31, 2011:

	March 30, 2012							December 31, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
						(In thousands)
Identifiable intangibles:
Existing and core technology	$	136,145	$	(87,310	)	$	48,835	$	136,145	$	(81,951	)	$	54,194
Customer relationships/contracts		67,098		(43,649	)		23,449		67,098		(42,142	)		24,956
Trademarks and tradenames		11,361		(8,060	)		3,301		11,361		(7,700	)		3,661
Supply agreements		3,414		(3,414	)		—		3,414		(3,414	)		—
Maintenance agreements and related relationships		7,100		(2,574	)		4,526		7,100		(2,260	)		4,840
Software license, intellectual property and assembled workforce		309		(309	)		—		309		(309	)		—
Order backlog		2,800		(2,800	)		—		2,800		(2,800	)		—
Total of identifiable intangibles	$	228,227	$	(148,116	)	$	80,111	$	228,227	$	(140,576	)	$	87,651

The changes in the carrying amount of goodwill for the three months ended March 30, 2012 are as follows:

	(In thousands)
Balance at beginning of period	$	212,417
Foreign currency translation adjustment		68
Balance at end of period	$	212,485

11

Amortization expense for the identifiable purchased intangible assets for the three months ended March 30, 2012 and April 1, 2011 was allocated as follows:

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Included in cost of revenue	$	5,360	$	5,142
Included in operating expenses		2,179		2,229
Total amortization expense	$	7,539	$	7,371

The estimated future amortization expense of purchased intangible assets with definite lives is as follows:

	Cost of Revenue		Operating Expenses		Total
	(In thousands)
Years ending December 31,
2012 (remaining 9 months)	$	15,144	$	6,525	$	21,669
2013		19,232		8,096		27,328
2014		13,745		6,775		20,520
2015		714		5,783		6,497
2016		—		4,097		4,097
Total	$	48,835	$	31,276	$	80,111

NOTE 7: RESTRUCTURING AND EXCESS FACILITIES

In the fourth quarter of 2010, the Company recorded an excess facilities expense of $3.0 million in selling, general and administrative expenses related to the closure of the Omneon headquarters in Sunnyvale, California. The charge was based on future rent payments, net of expected sublease income, to be made through the end of the lease term in June 2013. In the first quarter of 2011, the Company recorded an additional expense of $0.5 million in selling, general and administrative expenses related to changes in expected sublease income for this property. Harmonic reassesses this liability quarterly and adjusts it, as necessary, based on changes in the timing and amounts of expected sublease rental income.

As of March 30, 2012, accrued excess facilities costs totaled $2.2 million, of which $1.7 million was included in current accrued liabilities.

12

The following table summarizes the activity in the restructuring accrual during the three months ended March 30, 2012:

	Excess Facilities
	(In thousands)
Balance at December 31, 2011	$	2,593
Provisions		—
Cash payments		(432	)
Balance at March 30, 2012	$	2,161

NOTE 8: CREDIT FACILITIES

Harmonic has a bank line of credit facility with Silicon Valley Bank, which provides for borrowings of up to $10.0 million and matures on August 25, 2012. As of March 30, 2012, other than standby letters of credit and guarantees (Note 13), there were no amounts outstanding under the line of credit facility and there were no borrowings during the three months ended March 30, 2012. This facility, which became effective in August 2011, contains a financial covenant that requires Harmonic to maintain a ratio of unrestricted cash, accounts receivable and short term investments to current liabilities (less deferred revenue) of at least 1.75 to 1.00. As of March 30, 2012, the Company’s ratio under that covenant was 3.92 to 1. In the event of noncompliance by Harmonic with the covenants under the facility, including the financial covenant referenced above, Silicon Valley Bank would be entitled to exercise its remedies under the facility, including declaring all obligations immediately due and payable. At March 30, 2012, Harmonic was in compliance with the covenants under the line of credit facility. Borrowings pursuant to the line would bear interest at the bank’s prime rate (3.25% at March 30, 2012) or at LIBOR for the desired borrowing period (an annualized rate of 0.24% for a one month borrowing period at March 30, 2012) plus 1.75%, or 1.99%. Borrowings are not collateralized.

NOTE 9: BENEFIT PLANS

Harmonic grants stock options and restricted stock units (“RSUs”) pursuant to stockholder approved equity incentive plans. These equity incentive plans are described in further detail in Note 13. Benefit Plans, of Notes to Consolidated Financial Statements in the 2011 Form 10-K.

13

Stock Options and RSUs

The following table summarizes the Company’s stock option and restricted stock unit activity during the three months ended March 30, 2012 (in thousands, except per share amounts):

				Stock Options Outstanding					Restricted Stock Units Outstanding
	Shares Available for Grant			Number of Shares			Weighted Average Exercise Price		Number of Units			Weighted Average Grant Date Fair Value
Balance at December 31, 2011		7,835			9,303		$	7.12		3,713		$	7.52
Granted		(3,835	)		899		$	6.14		1,957		$	6.10
Options exercised		—			(129	)	$	2.93		—		$	—
Shares released		—			—		$	—		(649	)	$	8.29
Forfeited or cancelled		815			(722	)	$	9.28		(273	)	$	6.73
Balance at March 30, 2012		4,815			9,351		$	6.92		4,748		$	6.77

The following table summarizes information about stock options outstanding as of March 30, 2012 (in thousands, except per share amounts and term):

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Vested and expected to vest		9,185	$	6.92		3.8	$	3,373
Exercisable		6,817	$	7.13		2.9	$	2,272

The intrinsic value of options vested and expected to vest and exercisable as of March 30, 2012 is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of March 30, 2012. The intrinsic value of options exercised during the three months ended March 30, 2012 was $0.4 million and is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the exercise date.

The following table summarizes information about restricted stock units outstanding as of March 30, 2012 (in thousands, except term):

	Number of Shares Underlying Restricted Stock Units		Weighted Average Remaining Vesting Period (Years)		Aggregate Fair Value
Vested and expected to vest		4,376		1.6	$	23,939

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NOTE 10: STOCK-BASED COMPENSATION

The following table summarizes stock-based compensation costs in our Statements of Operations for the three months ended March 30, 2012 and April 1, 2011 (in thousands):

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Cost of revenue	$	794	$	747
Research and development expense		1,724		1,836
Selling, general and administrative expense		2,282		3,419
Total employee stock-based compensation recognized in statement of operations		4,800		6,002
Amount capitalized in inventory		—		14
Total stock-based compensation	$	4,800	$	6,016

Stock Options

The Company estimated the fair value of all employee stock options using a Black-Scholes valuation model with the following weighted average assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		4.70			4.75
Volatility		58	%		54	%
Risk-free interest rate		1.0	%		2.1	%
Expected dividends		0.0	%		0.0	%

Expected term. The expected term represents the weighted-average period that the stock options are expected to remain outstanding. Our computation of expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior.

Volatility. The Company uses its historical volatility for a period equivalent to the expected term of the options to estimate the expected volatility.

Risk-free interest rate. The risk-free interest rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.

Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods. The Company’s estimated forfeiture rate was 6% and 5% for the three months ended March 30, 2012 and April 1, 2011, respectively.

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The weighted-average fair value of options granted for the three months ended March 30, 2012 and April 1, 2011 was $2.94 and $4.55 per share, respectively.

The fair value of all stock options vested during the three months ended March 30, 2012 was $ 2.1 million.

Restricted Stock Units

The fair value of RSUs is equal to the fair value of the Company’s common stock on the date of grant.

The fair value of all restricted stock units issued during the three months ended March 30, 2012 was $ 5.4 million.

Employee Stock Purchase Plan

The value of the stock purchase rights under the Company’s Employee Stock Purchase Plan (“ESPP”) consists of: (1) the 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		0.5			0.5
Volatility		53	%		54	%
Risk-free interest rate		0.2	%		0.3	%
Expected dividends		0.0	%		0.0	%

Expected term. The expected term represents the period of time from the beginning of the offering period to the purchase date.

Volatility. The Company uses its historical volatility for a period equivalent to the expected term of the options to estimate the expected volatility.

Risk-free interest rate. The risk-free interest rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.

Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

The weighted-average fair value of stock purchase rights granted under the ESPP for the three months ended March 30, 2012 and April 1, 2011 was $ 1.50 and $2.58 per share, respectively.

Unrecognized Stock-Based Compensation

As of March 30, 2012, total unamortized stock-based compensation cost related to unvested stock options and restricted stock units was $39.1 million. This amount will be recognized as expense using the straight-line attribution method over the remaining weighted-average amortization period of 2.8 years.

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NOTE 11: INCOME TAXES

The income tax provision includes U.S. federal, state and local, and foreign income taxes and is based on the application of a forecasted annual income tax rate applied to the current quarter’s year-to-date pre-tax income (loss). In determining the estimated annual effective income tax rate, the Company analyzes various factors, including projections of the Company’s annual earnings, taxing jurisdictions in which the earnings will be generated, the impact of state and local income taxes, the Company’s ability to use tax credits and net operating loss carryforwards, and available tax planning alternatives. Discrete items, including the effect of changes in tax laws, tax rates, and certain circumstances with respect to valuation allowances or other unusual or non-recurring tax adjustments are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than being included in the estimated annual effective income tax rate.

For the three months ended March 30, 2012, the Company recorded a benefit from income taxes of $0.6 million, compared to a benefit of $0.6 million for the same period a year ago, inclusive of discrete items.

For the three months ended March 30, 2012, the difference between the recorded benefit from income taxes and the tax provision, based on the federal statutory rate of 35%, was primarily attributable to the differential in foreign tax rates, non-deductible stock-based compensation expense and non-deductible amortization on foreign intangibles. The discrete items recorded in the first quarter of 2012 principally related to accrued interest on uncertain tax positions and foreign currency translation adjustments.

For the three months ended April 1, 2011, the difference between the recorded benefit from income taxes and the tax provision, based on the federal statutory rate of 35%, was primarily attributable to various discrete items, the differential in foreign tax rates, non-deductible stock-based compensation expense, non-deductible amortization on foreign intangibles, and federal research and development credits. The discrete items recorded in the first quarter of 2011 principally related to foreign currency translation adjustments, accrued interest on uncertain tax positions and a benefit associated with the reversal of previously provided foreign income taxes due to statute of limitation expirations.

In compliance with applicable guidance for accounting for uncertainty in income taxes, the Company had gross unrecognized tax benefits, which include interest and penalties, of approximately $52.5 million as of December 31, 2011, and approximately $52.6 million as of March 30, 2012. If all of these unrecognized tax benefits were recognized, the entire amount would impact the provision for income taxes. We anticipate the unrecognized tax benefits to decrease by $2.8 million in the 12 months beginning March 31, 2012, due to statute of limitation expirations, except to the extent the IRS may challenge the Company’s position with respect to such benefits.

The Company recognizes interest and possible penalties related to uncertain tax positions in income tax expense. During the three months ended March 30, 2012, the Company recorded a net increase of $0.4 million for interest and possible penalties related to uncertain tax positions, resulting in a balance at March 30, 2012 of $5.6 million.

The Company files U.S., state, and foreign income tax returns in jurisdictions with varying statute of limitations periods, during which such tax returns may be audited and adjusted by the relevant tax authorities. The Company’s 2008 through 2011 tax years generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the Company’s 2005 through 2011 tax years generally remain subject to examination by their respective tax authorities. A subsidiary of the Company is under audit by the Israel tax authority for the years 2007 through 2010. The Company is currently under audit by the US Internal Revenue Service for the 2007, 2008 and 2009 tax years. In addition, the statute of limitations on our 2007 and 2008 U.S. corporate income tax return has been extended to 2013.

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NOTE 12: NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed by dividing the net income (loss) attributable to common stockholders for the period by the weighted average number of common shares outstanding during the period. The following table shows the potentially dilutive shares, consisting of options, restricted stock units and ESPP shares, for the periods presented, that were excluded from the net income computations because their effect was antidilutive:

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Potentially dilutive equity awards outstanding		10,209		7,990

Following is a reconciliation of the denominators of the basic and diluted net income (loss) per share computations:

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except per share amounts)
Net income (loss) (numerator)	$	(7,528	)	$	516
Shares calculation (denominator):
Weighted average shares outstanding—basic		117,275			113,836
Effect of Dilutive Securities:
Potential common stock relating to stock options, restricted stock units and ESPP		—			2,273
Weighted averages shares outstanding—diluted		117,275			116,109
Net income (loss) per share—basic	$	(0.06	)	$	0.00
Net income (loss) per share—diluted	$	(0.06	)	$	0.00

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NOTE 13: COMMITMENTS AND CONTINGENCIES

Leases.

Future minimum lease payments under noncancelable operating leases at March 30, 2012 are as follows:

	Total
	(In thousands)
2012 (remaining nine months)	$	4,755
2013		7,922
2014		6,595
2015		6,612
2016		6,807
Thereafter		26,681
	$	59,372

Warranties. The Company accrues for estimated warranty costs at the time of product shipment. Management periodically reviews the estimated fair value of its warranty liability and records adjustments based on the terms of warranties provided to customers, historical and anticipated warranty claims experience, and estimates of the timing and cost of warranty claims. Activity for the Company’s warranty accrual, which is included in accrued liabilities, is summarized below:

	Three months ended
	March 31, 2012			April 1, 2011
	(In thousands)
Balance at beginning of period	$	5,558		$	4,811
Accrual for current period warranties		1,619			2,262
Warranty costs incurred		(2,044	)		(1,810	)
Balance at end of period	$	5,133		$	5,263

Purchase Commitments with Contract Manufacturers and Suppliers. The Company relies on a limited number of contract manufacturers and suppliers to provide manufacturing services for a substantial majority of its products. In addition, some components, sub-assemblies and modules are obtained from a sole supplier or limited group of suppliers. During the normal course of business, in order to reduce manufacturing lead times and ensure adequate component supply, the Company enters into agreements with certain contract manufacturers and suppliers that allow them to procure inventory based upon criteria as defined by the Company. The Company had approximately $24 million of non-cancelable purchase commitments as of March 30, 2012.

Standby Letters of Credit. As of March 30, 2012, the Company’s financial guarantees consisted of standby letters of credit outstanding, which were principally related to performance bonds and state requirements imposed on employers. The maximum amount of potential future payments under these arrangements was $1.1 million.

Indemnification. Harmonic is obligated to indemnify its officers and the members of its Board of Directors pursuant to its bylaws and contractual indemnity agreements. Harmonic also indemnifies some of its suppliers and most of its customers for specified intellectual property matters pursuant to certain contractual arrangements, subject to certain limitations. The scope of these indemnities varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorneys’ fees). There have been no amounts accrued in respect of these indemnification provisions through March 30, 2012.

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Guarantees. At March 30, 2012, Harmonic had no other guarantees outstanding.

Legal proceedings.

In October 2011, Avid Technology, Inc. filed a complaint in the United States District Court for the District of Delaware alleging that Harmonic’s Omneon Media Grid product infringes two patents held by Avid. The complaint seeks injunctive relief and damages. At this time, the Company cannot predict the outcome of this matter. An unfavorable outcome of this matter could adversely affect the Company’s business, operating results, financial position and cash flows.

In March 2010, Interkey ELC Ltd, or Interkey, filed a lawsuit in Israel, alleging breach of contract against Harmonic and Scopus Video Networks Ltd. (now Harmonic Video Networks Ltd. or “HVN”), which was acquired by Harmonic in March 2009. The plaintiffs are seeking damages in the amount of 6,300,000 ILS (approximately $1.7 million). Although, as is the case with all litigation, no assurances can be given as to the outcome of the Interkey lawsuit, we believe Interkey’s and its shareholders’ claims are without merit and Harmonic and HVN intend to vigorously defend themselves against these claims. Based on the foregoing, as of March 30, 2012 and as of the date these financial statements were issued, we do not currently believe a loss is probable and have therefore not recorded a provision for this claim.

An unfavorable outcome on the above referenced matters or any other litigation matters could require that Harmonic pay substantial damages, or, in connection with any intellectual property infringement claims, could require that the Company pay ongoing royalty payments or could prevent the Company from selling certain of its products. As a result, a settlement of, or an unfavorable outcome on, any of the above referenced or other litigation matters could have a material adverse effect on Harmonic’s business, operating results, financial position and cash flows.

Harmonic’s industry is characterized by the existence of a large number of patents and frequent claims and related litigation regarding patent and other intellectual property rights. From time to time, third parties have asserted, and may in the future assert, exclusive patent, copyright, trademark and other intellectual property rights against us or the Company’s customers. Such assertions arise in the normal course of the Company’s operations. The resolution of any such assertions and claims cannot be predicted with certainty.

NOTE 14: SUBSEQUENT EVENT

In April 2012, the Board of Directors authorized a stock repurchase program that provides for the repurchase of up to $25 million of outstanding common stock during the next 18 months. Under the program, the Company could purchase shares of common stock through open market transactions at prices deemed appropriate by management, subject to certain pre-determined price/volume guidelines set, from time to time, by the Board. The timing and amount of repurchase transactions under this program will depend on market conditions and corporate and regulatory considerations. The purchases will be funded from available working capital. The stock repurchase program may be suspended or discontinued at any time.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The terms “Harmonic,” the “Company,” “we,” “us,” “its,” and “our,” as used in this Quarterly Report on Form 10-Q (“Form 10-Q”), refer to Harmonic Inc. and its subsidiaries and its predecessors as a combined entity, except where the context requires otherwise.

20

Some of the statements contained in this Form 10-Q are forward-looking statements that involve risk and uncertainties. The statements contained in this Form 10-Q that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including, without limitation, statements regarding our expectations, beliefs, intentions or strategies regarding the future. In some cases, you can identify forward-looking statements by terminology such as, “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “believes,” “intends,” “estimates,” “predicts,” “potential,” or “continue” or the negative of these terms or other comparable terminology. These forward-looking statements include, but are not limited to, statements regarding:

• developing trends and technological changes in the markets we serve;

• continuation of customer concentration;

• spending of our customers, particularly in Europe in the second quarter of 2012 and beyond;

• impact of natural disasters on our supply chain;

• our strategic direction, future business plans and growth strategy;

• dependence on international revenue, particularly from Europe;

• dependence on contract manufacturers;

• industry and customer consolidation;

• anticipated changes in economic conditions or the financial markets, and the potential impact on our business;

• need to develop timely new and enhanced products;

• the expected demand for, and benefits of, our products and services;

• concentration of revenue sources;

• anticipated benefits of recent acquisitions and potential future acquisitions;

• statements regarding anticipated results of potential or actual litigation;

• our competitive environment;

• the impact of governmental regulation;

• anticipated revenue and expenses, including the sources of such revenue and expenses; and

• use of cash, cash needs and ability to raise capital.

These statements are subject to known and unknown risks, uncertainties and other factors, any of which may cause our actual results to differ materially from those implied by the forward-looking statements. Important factors that may cause actual results to differ from expectations include those discussed in “Risk Factors” beginning on page 31 of this Form 10-Q. All forward-looking statements included in this Form 10-Q are based on information available to us on the date thereof, and we assume no obligation to update any such forward-looking statements.

Overview

We design, manufacture and sell versatile and high performance video infrastructure products and system solutions. We enable our customers to efficiently create, prepare and deliver a full range of video services to consumer devices, including televisions, personal computers, tablets and mobile phones. Our products generally fall into three principal categories: video production platforms and playout solutions, video processing solutions and edge and access solutions. We also provide technical support services and professional services to our customers worldwide.

The principal markets we serve are cable television, direct broadcast satellite system companies, telecommunications companies, or “telcos”, broadcasters and media companies, as well as, more recently, the emerging streaming media providers, that create video programming or offer video-based infrastructure. Historically, a majority of our revenue has been derived from relatively few customers, due in part to the consolidation of the ownership of cable television and direct broadcast satellite system companies. Sales to our ten largest customers in the three months ended March 30, 2012 and April 1, 2011, accounted for approximately 40%, and 35%, respectively, of our revenue. Although we are attempting to broaden our customer base by penetrating new markets and further expanding internationally, we expect to see continuing industry consolidation and customer concentration. During the three months ended March 30, 2012 and April 1, 2011, revenue from Comcast accounted for 10% and 11%, respectively, of our revenue. The loss of Comcast or any other significant customer, any material reduction in orders by Comcast or any significant customer, or our failure to qualify our new products with a significant customer could materially and adversely affect our operating results, financial condition and cash flows.

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We recognized revenue of $128 million in the three months ended March 30, 2012, as compared to $133 million in the three months ended April 1, 2011. Our international sales, which had been growing at a faster pace than our domestic sales in prior periods, decreased by 9% in the first quarter of 2012, as compared to the first quarter of 2011, while domestic sales increased by 3% between the two periods. In the first quarter of 2012, international sales represented 52% of our total revenue, as compared to 56% of our total revenue in the first quarter of 2011. Further, notwithstanding the substantially reduced market activity in Europe that we experienced in the first quarter, as compared to the fourth quarter of 2011, we expect that international sales will continue to account for a significant portion of our net revenue for the foreseeable future, and expect that, due to sales to emerging markets in particular, our international revenue may increase as a percentage of our total net revenue from year to year.

Historically, our revenue has been dependent upon capital spending in the cable, satellite, telco and broadcast industries. More recently, we also have derived revenue from media companies, including streaming media providers. Industry consolidation has in the past constrained, and may in the future constrain, capital spending by our customers. If our product portfolio and product development plans do not position us well to capture an increased portion of the capital spending of customers in the markets on which we focus, our revenue may decline. As we attempt to further diversify our customer base in these markets, we may need to continue to build alliances with other equipment manufacturers and content providers, adapt our products for new applications, take orders at prices resulting in lower margins, and build internal expertise to handle the particular contractual and technical demands of the media market, which could result in higher operating costs. Implementation issues with our products or those of other vendors have caused, and may continue to cause, delays in project completion for our customers and delay our recognition of revenue.

Our quarterly revenue has been and may continue to be affected by seasonal buying patterns. Typically, the first quarter of the year is seasonally lower than other quarters, as our customers often are still finalizing their annual budget and capital spending projections for the year. Further, we often recognize a substantial portion of our quarterly revenues in the last month of the quarter. We establish our expenditure levels for product development and other operating expenses based on projected revenue levels for a specified period, and expenses are relatively fixed in the short term. Accordingly, even small variations in timing of revenue, particularly from large individual transactions, can cause significant fluctuations in operating results in a particular quarter.

Financial difficulties of certain of our customers and changes in our customers’ deployment plans have adversely affected our business in the past. In 2009, economic conditions in many of the countries in which we sell products were very weak, and global economic conditions and financial markets experienced a severe downturn. The downturn stemmed from a multitude of factors, including adverse credit conditions, slower economic activity, concerns about inflation and deflation, rapid changes in foreign exchange rates, increased energy costs, decreased consumer confidence, reduced corporate profits and capital spending, adverse business conditions and liquidity concerns. In 2011, we saw capital spending return to the levels we experienced before 2009. However, we experienced a substantial downturn in our European markets in the first quarter of 2012, as compared to the fourth quarter of 2011, and reduced market activity in Europe may continue during the second quarter and possibly beyond. If an economic downturn occurs, customers in the affected geographies may delay or reduce capital expenditures, which, in turn, often results in lower demand for our products.

CRITICAL ACCOUNTING POLICIES, JUDGMENTS AND ESTIMATES

There have been no material changes to our critical accounting policies, judgments and estimates during the three month period ended March 30, 2012, from those disclosed in our 2011 Form 10-K.

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RESULTS OF OPERATIONS

Net Revenue

Net Revenue by Product Line

Harmonic’s consolidated net revenue, by product line, for the three months ended March 30, 2012, compared to the same period of 2011, is presented in the table below. Also presented is the related dollar and percentage change in consolidated net revenue, by product line, in the three months ended March 30, 2012, as compared to the same period of 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Revenue by type:
Video processing products	$	52,681		$	63,758
Production and playout products		20,878			20,933
Edge and access products		36,808			31,176
Service and support		17,354			16,968
Net revenue	$	127,721		$	132,835
Increase (decrease):
Video processing products	$	(11,077	)
Production and playout products		(55	)
Edge and access products		5,632
Service and support		386
Total decrease	$	(5,114	)
Percent change:
Video processing products		(17	)%
Production and playout products		—
Edge and access products		18
Service and support		2
Total percent change		(4	)%

The decrease in net revenue in the first quarter of 2012, compared to the same period of 2011, was primarily due to a substantial reduction in demand for video processing solutions, primarily in the geographic region consisting of Europe, the Middle East and Africa (“EMEA”), offset by an increase in demand for edge and access products in the U.S. The increase in sales of edge and access products in the first quarter of 2012, compared to the same period in 2012, was primarily due to an increase in sales of edge products, which are used for Video on Demand (“VOD”), Modular Cable Termination Systems (“M-CMTS”) and switched digital video applications to domestic and international cable operators.

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Net Revenue by Geographic Region

Harmonic’s domestic and international net revenue in the three months ended March 30, 2012, compared with the corresponding periods in 2011, are presented in the table below. Also presented are the related dollar and percentage change in domestic and international net revenue in the three months ended March 30, 2012, from the corresponding periods in 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Net revenue:
United States	$	60,854		$	58,954
International		66,867			73,881
Total	$	127,721		$	132,835
Increase (decrease):
United States	$	1,900
International		(7,014	)
Total decrease	$	(5,114	)
Percent change:
United States		3	%
International		(9	)
Total percent change		(4	)%

The increase in U.S. net revenue in the first quarter of 2012, compared to the corresponding period in 2011, was principally due to increased demand from our edge and access products and increased service and support revenue.

International net revenue in the first quarter of 2012 decreased, compared to the corresponding period in 2011, primarily due to decreased demand from customers, particularly in EMEA. The decrease was primarily related to sales of video processing products. We expect that international sales will continue to account for a significant percentage of our net revenue for the foreseeable future.

Gross Profit

Harmonic’s gross profit and gross profit as a percentage of net revenue in the three months ended March 30, 2012, as compared to the corresponding period in 2011, are presented in the table below. Also presented is the related dollar and percentage change in gross profit in the three months ended March 30, 2012, from the corresponding period in 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Gross profit	$	53,662		$	61,855
As a percentage of net revenue		42	%		47	%
Decrease	$	(8,193	)
Percent change		(13	)%

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The decrease in gross profit in the first quarter of 2012, as compared to the corresponding period in 2011, was primarily due to a change in product mix between the two quarters and the decrease in net revenue. Although total net revenue decreased in the first quarter of 2012, our revenue from edge products and particularly our new edge OAM products, which have lower gross margins than some of our other products, increased over the comparable prior year period.

In the first quarter of 2012, $5.4 million of amortization of intangibles was included in cost of sales compared to $5.1 million in the first quarter of 2011. We expect to record approximately $15.1 million in amortization of intangibles expenses in cost of sales in the remaining nine months of 2012, primarily related to intangible assets acquired in connection with the acquisition of Omneon and, to a lesser extent, Scopus.

Research and Development

Harmonic’s research and development expense and the expense as a percentage of net revenue in the three months ended March 30, 2012, as compared with the corresponding period of 2011, are presented in the table below. Also presented is the related dollar and percentage change in research and development expense in the three months ended March 30, 2012, from the corresponding period of 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Research and development	$	27,829		$	26,149
As a percentage of net revenue		22	%		20	%
Increase	$	1,680
Percent change		6	%

The increase in research and development expense in the first quarter of 2012, compared to the corresponding period in 2011, was primarily the result of increased compensation expense of $1.1 million and increased expenses for development materials of $0.5 million, offset by a decrease in outside engineering services of $0.3 million. The increased compensation expense was primarily due to additional hiring of employees engaged in engineering activities.

Selling, General and Administrative

Harmonic’s selling, general and administrative expense, and the expense as a percentage of net revenue in the three months ended March 30, 2012, as compared with the corresponding periods of 2011, are presented in the table below. Also presented is the related dollar and percentage change in selling, general and administrative expense in the three months ended March 30, 2012, from the corresponding period of 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Selling, general and administrative	$	32,311		$	33,564
As a percentage of net revenue		25	%		25	%
Decrease	$	(1,253	)
Percent change		(4	)%

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The decrease in selling, general and administrative expense in the first quarter of 2012, compared to the corresponding period in 2011, was primarily a result of decreased stock-based compensation expense of $1.1 million, as the rest of selling, general and administrative expenses remained relatively flat.

Amortization of Intangibles

Harmonic’s amortization of intangibles assets charged to operating expenses, and the amortization of intangible assets as a percentage of net revenue, in the three months ended March 30, 2012, as compared with the corresponding period of 2011, are presented in the table below. Also presented is the related dollar and percentage change in amortization of intangible assets in the three months ended March 30, 2012, from the corresponding period of 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Amortization of intangibles	$	2,179		$	2,229
As a percentage of net revenue		2	%		2	%
Decrease	$	(50	)
Percent change		(2	)%

The decrease in amortization of intangibles expense in the first quarter of 2012, compared to the corresponding period in 2011, was primarily due to certain purchased intangible assets becoming fully amortized. Harmonic expects to record a total of approximately $6.5 million in amortization of intangibles expense in operating expenses in the remaining nine months of 2012, primarily resulting from the acquisition of Omneon and, to a lesser extent, Scopus.

The estimated future amortization expense of purchased intangible assets with definite lives is as follows:

	Cost of Revenue		Operating Expenses		Total
	(In thousands)
Years ending December 31,
2012 (remaining 9 months)	$	15,144	$	6,525	$	21,669
2013		19,232		8,096		27,328
2014		13,745		6,775		20,520
2015		714		5,783		6,497
2016		—		4,097		4,097
Total	$	48,835	$	31,276	$	80,111

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Interest Income, Net

The increase in interest income, net in the first quarter of 2012 was primarily due to a higher balance of cash, cash equivalents and short-term investments during the quarter, as compared to the 2011 period.

Other Income (Expense), Net

Other income and expense is primarily comprised of foreign exchange gains and losses on accounts receivable and intercompany balances denominated in currencies other than the U.S dollar. In the first quarter of 2012, it also included a reimbursement of certain legal and tax claims associated with the acquisition of Omneon for which the Omneon shareholders had provided indemnification.

Income Taxes

Harmonic’s benefit from income taxes, and benefit from income taxes as a percentage of net revenue, in the three months ended March 30, 2012, are presented in the table below. Also presented is the related dollar and percentage change in benefit from income taxes in the three months ended March 30, 2012, from the corresponding period of 2011.

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except percentages)
Benefit from income taxes	$	607		$	618
As a percentage of net revenue		—	%		—	%
Decrease	$	(11	)
Percent change		(2	)%

The decrease in the benefit from income taxes in the first quarter of 2012, compared to the same period in 2011, was primarily attributable to a reduced benefit as a result of the expiration of U.S. Federal research and development tax credits and a reduction of a benefit associated with a foreign tax rate differential.

A subsidiary of the Company is under audit by the Israel tax authority for the years 2007 through 2010. The Company’s income tax returns for 2007, 2008 and 2009 are currently under examination by the U.S. Internal Revenue Service. In addition, the statue of limitations on our 2007 and 2008 U.S. corporate income tax returns has been extended to 2013.

Liquidity and Capital Resources

As of March 30, 2012, our cash and cash equivalents totaled $81.0 million, and our short-term investments totaled $87.4 million. As of March 30, 2012, a substantial majority of the Company’s cash, cash equivalents and short-term investments were held in accounts in the United States. The Company believes that these funds are sufficient to meet the requirements of our U.S. operations for the next twelve months as well as any stock repurchases under the repurchase program announced in April 2012.

In the event we need or desire to access funds from the short-term investments that we hold, it is possible that we may not be able to do so due to adverse market conditions. Our inability to sell all or some of our short-term investments at par or our cost, or rating downgrades of issuers of these securities, could adversely affect our results of operations or financial condition. Nevertheless, we believe that our existing liquidity sources will satisfy our presently contemplated cash requirements for at least the next twelve months. However, if our expectations are incorrect, we may need to raise additional funds to fund our operations, to take advantage of unanticipated opportunities or to strengthen our financial position.

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We have a bank line of credit facility with Silicon Valley Bank, which provides for borrowings of up to $10.0 million and matures on August 25, 2012. As of March 30, 2012, there were no amounts outstanding under the line of credit facility and there were no borrowings during the three months ended March 30, 2012. Future borrowings pursuant to the line would bear interest at the bank’s prime rate (3.25% at March 30, 2012) or at LIBOR for the desired borrowing period (an annualized rate of 0.24% for a one month borrowing period at March 30, 2012) plus 1.75%, or 1.99%. Borrowings are not collateralized. This facility contains a financial covenant that requires us to maintain a ratio of unrestricted cash, accounts receivable and short term investments to current liabilities (less deferred revenue) of at least 1.75 to 1.00. As of March 30, 2012, the Company’s ratio under that covenant was 3.92 to 1. In the event of noncompliance by us with the covenants under the facility, including the financial covenant referenced above, Silicon Valley Bank would be entitled to exercise its remedies under the facility, including declaring all obligations immediately due and payable.

We actively review potential acquisitions that would complement our existing product offerings, enhance our technical capabilities or expand our marketing and sales presence. Any future transaction of this nature could require potentially significant amounts of capital or could require us to issue our stock and dilute existing stockholders. If adequate funds are not available, or are not available on acceptable terms, we may not be able to take advantage of market opportunities, to develop new products or to otherwise respond to competitive pressures.

In addition, our ability to raise funds may be adversely affected by a number of factors relating to Harmonic, as well as factors beyond our control, including any global or continuing European economic slowdown, market uncertainty surrounding the ongoing U.S. war on terrorism and the impact of increases in oil prices and conditions in financial markets and the industries we serve. There can be no assurance that any financing will be available on terms acceptable to us, if at all.

The table below sets forth selected cash flow data for the periods presented:

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands)
Net cash provided by (used in):
Operating activities	$	7,964		$	(7,683	)
Investing activities		(20,536	)		(38,871	)
Financing activities		2,479			9,570
Effect of foreign exchange rate changes on cash		129			123
Net decrease in cash and cash equivalents	$	(9,964	)	$	(36,861	)

Operating Activities

Net cash provided by operating activities was $8.0 million during the first quarter of 2012. During the three months ended March 30, 2012, we had a net loss of $7.5 million, which incorporated non-cash charges, including depreciation and amortization of $11.3 million and stock-based compensation expenses of $4.8 million. We used cash to pay our accounts payable and accrued and other liabilities of $6.3 million. Additionally, inventory decreased by $4.2 million from the fourth quarter of 2011, as we were able to better manage our inventory through reduced inventory purchases and consumption of on-hand inventory.

Cash used in operations in the first three months of 2011 was $7.7 million, resulting from net income of $0.5 million, increased by an aggregate of $17.0 million in non-cash charges and decreased by an aggregate of $25.2 million in net change in assets and liabilities. The non-cash charges included principally amortization of intangible assets, stock-based compensation and depreciation. The net change in assets and liabilities included: (a) increases in accounts receivable and inventories, which was partially offset by a decrease in prepaid expenses; and (b) decreases in accounts payable, income taxes payable and accrued and other liabilities, which was partially offset by an increase in deferred revenue. The increase in accounts receivable is due to the non-linearity of invoicing in the quarter. The decrease in accrued and other liabilities was principally attributable to payment of incentive compensation accruals from 2010.

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We expect that cash provided by operating activities may fluctuate in future periods as a result of a number of factors, including fluctuations in our operating results, shipment linearity, accounts receivable collections performance, inventory and supply chain management, tax benefits from stock-based compensation, and the timing and amount of compensation and other payments. We usually pay our annual incentive compensation to employees in the first quarter.

Investing Activities

Net cash used in investing activities was $20.5 million in the first quarter of 2012, resulting from the purchase of short-term investments of $36.7 million and capital expenditures of $3.7 million, partially offset by proceeds from the net sale and maturity of investments of $18.8 million. Harmonic currently expects capital expenditures will be in the range of $11.0 million to $16.0 million during the remainder of 2012.

Net cash used in investing activities was $38.9 million in the first quarter of 2011, resulting from the purchase of short-term investments of $41.8 million and capital expenditures of $5.0 million, offset by proceeds from the net sale and maturity of investments of $7.9 million.

Financing Activities

Net cash provided by financing activities of $2.5 million in the first quarter of 2012 and $9.6 million in the same period a year ago were the result of net proceeds from the issuance of common stock related to our employee and director stock plans.

OFF-BALANCE SHEET ARRANGEMENTS

None as of March 30, 2012.

CONTRACTUAL OBLIGATIONS AND COMMITMENTS

As of March 30, 2012, we had approximately $24 million of non-cancelable purchase order commitments. There were no other significant changes to our contractual obligations and commitments in the three months ended March 30, 2012, from the information presented in our 2011 Form 10-K.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk represents the risk of loss that may impact the operating results, financial position or liquidity of Harmonic due to adverse changes in market prices and rates. Harmonic is exposed to market risk because of changes in interest rates, foreign currency exchange rates, as measured against the U.S. dollar and currencies held by Harmonic’s subsidiaries, and changes in the value of financial instruments held by Harmonic.

FOREIGN CURRENCY EXCHANGE RISK

Harmonic has a number of international subsidiaries, each of whose sales are generally denominated in U.S. dollars. In addition, Harmonic has various international branch offices that provide sales support and systems integration services. Sales denominated in foreign currencies were approximately 10% and 9% of net revenue in the first quarter of 2012 and 2011, respectively. Harmonic enters into foreign currency forward exchange contracts (“forward exchange contracts”) to manage exposure related to foreign accounts receivable and reduce the effects of fluctuating exchange rates on expenses denominated in foreign currencies. Harmonic does not enter into derivative

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financial instruments for trading purposes. The table below presents the impact on the foreign exchange gain (loss) of a hypothetical 10% appreciation and a 10% depreciation of the USD against the forward exchange contracts as of March 30, 2012 (in thousands):

Currency - forward contracts	Position	USD Value of Net Foreign Exchange Contracts		Foreign Exchange Gain From 10% Appreciation of USD		Foreign Exchange Loss From 10% Depreciation of USD
EUR	Sell EUR	$	9,080	$	908	$	(908	)
GBP	Sell GBP	$	6,939	$	694	$	(694	)
ILS	Buy ILS	$	4,047	$	405	$	(405	)
EUR	Buy EUR	$	1,204	$	120	$	(120	)
GBP	Buy GBP	$	1,178	$	118	$	(118	)

INTEREST RATE AND CREDIT RISK

Exposure to market risk for changes in interest rates relates primarily to Harmonic’s investment portfolio of marketable debt securities of various issuers, types and maturities and to Harmonic’s borrowings, if any, under its bank line of credit facility. Harmonic does not use derivative instruments in its investment portfolio, and its investment portfolio only includes highly liquid instruments. These investments are classified as available for sale and are carried at estimated fair value, with material unrealized gains and losses reported in “accumulated other comprehensive income (loss)”. As of March 30, 2012, gross unrealized gains were nominal. If the credit market deteriorates, we may incur realized losses, which could adversely affect our financial condition or results of operations. There is risk that losses could be incurred if Harmonic were to sell any of its securities prior to stated maturity. As of March 30, 2012, our cash, cash equivalents and short-term investments balance was $168.5 million. In a declining interest rate environment, as short term investments mature, reinvestment occurs at less favorable market rates. Given the short term nature of certain investments, declining interest rates would negatively impact investment income. Based on our estimates, a 10% change in interest rates would have increased or decreased the fair value of our investments by approximately $0.1 million as of March 30, 2012.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures.

We maintain “disclosure controls and procedures,” as such term is defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), that are designed to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, management recognized that disclosure controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Additionally, in designing disclosure controls and procedures, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. The design of any disclosure controls and procedures also is based, in part, upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

Based on their evaluation as of the end of the period covered by this Quarterly Report on Form 10-Q, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective at a reasonable assurance level.

PART II

OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

In October 2011, Avid Technology, Inc. filed a complaint in the United States District Court for the District of Delaware alleging that Harmonic’s Omneon Media Grid product infringes two patents held by Avid. The complaint

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seeks injunctive relief and damages. At this time, the Company cannot predict the outcome of this matter. An unfavorable outcome of this matter could adversely affect our business, operating results, financial position and cash flows.

In March 2010, Interkey ELC Ltd, or Interkey, filed a lawsuit in Israel, alleging breach of contract against Harmonic and Scopus Video Networks Ltd. (now Harmonic Video Networks Ltd. or “HVN”), which was acquired by Harmonic in March 2009. The plaintiffs are seeking damages in the amount of 6,300,000 ILS (approximately $1.7 million). Although, as is the case with all litigation, no assurances can be given as to the outcome of the Interkey lawsuit, we believe Interkey’s and its shareholders’ claims are without merit and Harmonic and HVN intend to vigorously defend themselves against these claims. Based on the foregoing, as of March 30, 2012 and as of the date these financial statements were issued, we do not currently believe a loss is probable and have therefore not recorded a provision for this claim.

Harmonic is subject to other litigation incidental to its business that is not believed to be material to the Company.

ITEM 1A. RISK FACTORS

We depend on cable, satellite and telco, and broadcast and media industry capital spending for our revenue and any material decrease or delay in capital spending in any of these industries would negatively impact our operating results, financial condition and cash flows.

Our revenue has been derived from sales to cable television operators, satellite and telco operators and broadcast and media companies, as well as, more recently, emerging streaming media providers. We expect that these markets will provide our revenue for the foreseeable future. Demand for our products will depend on the magnitude and timing of capital spending by customers in these markets for the purpose of creating, expanding or upgrading their systems.

These capital spending patterns are dependent on a variety of factors, including:

• impact of general economic conditions, actual and projected;

• access to financing;

• annual capital spending budget cycles of each of the industries we serve;

• impact of industry consolidation;

• federal, local and foreign government regulation of telecommunications, television broadcasting and streaming media;

• overall demand for communication services and consumer acceptance of new video and data services;

• evolving industry standards and network architectures;

• competitive pressures, including pricing pressures; and

• discretionary end-user customer spending patterns.

In the past, specific factors contributing to reduced capital spending have included:

• weak or uncertain economic and financial conditions in domestic or international markets,

• uncertainty related to development of digital video industry standards;

• delays in the evaluation of new services, new standards and system architectures by many operators;

• emphasis by operators on generating revenue from existing customers, rather than from new customers, through construction, expansion or upgrades of systems;

• a reduction in the amount of capital available to finance projects of our customers and potential customers;

• proposed and completed business combinations and divestitures by our customers and the length of regulatory review of each; and

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• bankruptcies and financial restructuring of major customers.

The financial difficulties of certain of our customers and changes in our customers’ deployment plans have adversely affected our business in the past. In 2008 and 2009, economic conditions in many of the countries in which we sell products were very weak, and global economic conditions and financial markets experienced a severe downturn. The downturn stemmed from a multitude of factors, including adverse credit conditions, slower economic activity, concerns about inflation and deflation, rapid changes in foreign exchange rates, increased energy costs, decreased consumer confidence, reduced corporate profits and capital spending, adverse business conditions and liquidity concerns. Although there was an increase in global economic activity in the second half of 2010 and the first half of 2011, economic growth appeared to have become sluggish in some geographies, particularly in the U.S., during the balance of 2011, and may be weak in some geographies, particularly Europe, during 2012. The severity or length of time that economic and financial market conditions may be weak or sluggish, whether certain or all of such adverse factors will persist, or whether a severe down turn may occur in the U.S., Europe or in other countries, is unknown. During challenging or uncertain economic times, and particularly in tight credit markets, many customers may delay or reduce capital expenditures, which often results in lower demand for our products.

Further, we have a number of international customers to whom sales are denominated in U.S. dollars. The value of the U.S. dollar fluctuates significantly against many foreign currencies, including the Euro and other local currencies of many of our international customers. If the U.S. dollar appreciates relative to the local currencies of our customers, then the prices of our products correspondingly increase for such customers. Such an effect could adversely impact sales of our products to such customers and result in longer sales cycles, difficulties in collection of accounts receivable, slower adoption of new technologies and increased price competition in the affected countries. Further, if the U.S. dollar were to weaken against many foreign currencies, there can be no assurance that a weaker dollar would lead to growth in capital spending.

In addition, industry consolidation has in the past constrained, and may in the future constrain, capital spending by our customers. Further, if our product portfolio and product development plans do not position us well to capture an increased portion of the capital spending of customers in the markets on which we focus, our revenue may decline.

As a result of these capital spending issues, we may not be able to maintain or increase our revenue in the future, and our operating results, financial condition and cash flows could be materially and adversely affected.

The markets in which we operate are intensely competitive.

The markets for our products are extremely competitive and have been characterized by rapid technological change and declining average sales prices in the past. Pressure on average sales prices was particularly severe during previous economic downturns as equipment suppliers competed aggressively for customers’ reduced capital spending, and we experienced similar pressure during the economic slowdown in 2008 and 2009.

In the digital video solutions market, we compete broadly with products from vertically integrated system suppliers, including Motorola, Cisco Systems, Ericsson, and Thomson Video Networks and, in certain product lines, with a number of smaller companies. Our principal competitors for our production and playout products are Harris, Grass Valley, Miranda and Avid. Our principal competitors for edge and access products are Cisco Systems, Motorola, Aurora and Arris.

Many of our competitors are substantially larger, and have greater financial, technical, marketing and other resources than we have. Many of these large enterprises are in a better position to withstand any significant reduction in capital spending by customers in our markets. They often have broader product lines and market focus, and may not be as susceptible to downturns in a particular market. These competitors may also be able to bundle their products together to meet the needs of a particular customer, and may be capable of delivering more complete solutions than we are able to provide. To the extent large enterprises that currently do not compete directly with us choose to enter our markets by acquisition or otherwise, competition would likely intensify.

Further, some of our competitors that have greater financial resources have offered, and in the future may offer, their products at lower prices than we offer for our competing products or on more attractive financing terms, which has in the past caused, and may in the future cause, us to lose sales opportunities and the resulting revenue or

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to reduce our prices in response to that competition. Reductions in prices for any of our products could materially and adversely affect our operating margins and revenue. In addition, many of our competitors have been in operation longer than we have and, therefore, have more long-standing and established relationships with domestic and foreign customers, making it difficult for us to sell to those customers.

If any of our competitors’ products or technologies were to become the industry standard, our business would be seriously harmed. If our competitors are successful in bringing their products to market earlier than us, or if these products are more technologically capable than ours, our revenue could be materially and adversely affected. In addition, certain companies that have not had a large presence in the broadband communications equipment market have begun to expand their presence in this market through mergers and acquisitions. The continued consolidation of our competitors could have a significant negative impact on our business. Further, our competitors, particularly companies that offer products that are competitive with our digital video systems, may bundle their products or incorporate functionality into existing products in a manner that discourages users from purchasing our products or which may require us to lower our selling prices, resulting in lower revenues and decreased gross margins.

If we are unable to compete at the same level as we have in the past, in any of our markets, or are forced to reduce the prices of our products in order to continue to be competitive, our operating results, financial condition and cash flows would be materially and adversely affected.

We need to develop and introduce new and enhanced products in a timely manner to meet the needs of our customers and to remain competitive.

All of the markets we address are characterized by continuing technological advancement, changes in customer requirements and evolving industry standards. To compete successfully, we must continually design, develop, manufacture and sell new or enhanced products that provide increasingly higher levels of performance and reliability and meet our customers changing needs. However, we may not be successful in those efforts if, among other things, our products:

• are not cost effective;

• are not brought to market in a timely manner;

• are not in accordance with evolving industry standards and architectures;

• fail to meet market acceptance or customer requirements; or

• are ahead of their market.

We are currently developing and marketing products based on established video compression standards, such as MPEG-4 AVC/H.264, which provides significantly greater compression efficiency, thereby making more bandwidth available to operators. We are also involved in research and development efforts with respect to products utilizing new technologies such as high efficiency video coding, or “HEVC”. At the same time, we need to devote development resources to the existing MPEG-2 standard that many of our customers continue to require. There can be no assurance that these efforts will be successful in the near future, or at all, or that our competitors will not take significant market share in encoding or transcoding.

In order to attempt to meet fast paced, dynamic, evolving standards and customer requirements, we are intensifying our development efforts on products that will facilitate and enhance multi-screen applications, on media (“playout”) servers utilizing integrated channel playout, and on converged cable access platform (“CCAP”) products that are intended to address customers’ cost reduction efforts through the use of IP technology. Many of these products are intended to integrate existing and new features and functions in response to shifts in customer demands in the relevant market. The success of these significant and costly development efforts will be predicated, in substantial part, on the timing of market adoption of the new standards on which the resulting products are based. If any of the new standards are not adopted or such adoption is earlier or later than we are predicting, we risk spending research and development time and dollars on products that may never achieve market acceptance or introduction of products which miss the customer demand window and thus do not produce the revenue that a timely introduction would have likely produced.

In order to successfully develop and market certain of our planned products, we may be required to enter into technology development or licensing agreements with third parties. We cannot provide assurances that we will be able to timely enter into any necessary technology development or licensing agreements on reasonable terms, or at all.

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If we fail to develop and market new and enhanced products, our operating results, financial condition and cash flows could be materially and adversely affected.

Conditions and changes in some national and global economic environments may adversely affect our business and financial results.

Adverse economic conditions in geographic markets in which we operate may harm our business. As described in the first risk factor in this section, economic conditions in some countries in which we sell products were weak in 2008, 2009, and the first half of 2010. That weakness was principally the result of global financial markets having experienced a severe downturn, stemming from a multitude of factors, including adverse credit conditions, slower economic activity, concerns about inflation and deflation, rapid changes in foreign exchange rates, increased energy costs, decreased consumer confidence, reduced corporate profits and capital spending, adverse business conditions and liquidity concerns. The global economic slowdown led many of our customers to decrease their expenditures in 2009, and we believe that this slowdown caused certain of our customers to reduce or delay orders for our products. Many of our international customers have been exposed to tight credit markets and depreciating currencies, further restricting their ability to build, expand or upgrade their networks. Some customers have had difficulty in servicing or retiring existing debt, and the financial constraints on certain international customers required us to significantly increase our allowance for doubtful accounts in the fourth quarter of 2008. It is possible that such adverse economic conditions may return in 2012, particularly in Europe.

Beginning in the second quarter of 2011, the possible inability of some developed countries, including Greece, Italy, Ireland, Portugal and Spain, to meet their debt payment obligations has put substantial strain, both direct and indirect, on economic conditions in those countries, in Europe and in many other parts of the world, including the U.S. If one or more of the Euro-zone countries were to default on its sovereign debt, the adverse impact on European and other economies, including the U.S., could be severe. Further, the lowering of the U.S. government’s credit rating in 2011 had an adverse affect on U.S. and international financial markets and may have a material and adverse affect on the U.S. economy, and possibly the economies of most, if not all, of the other countries in the world, if the credit rating is lowered again. In addition, the recent lowering of the credit ratings of several of the European countries could have the same effect. The impact of any of these issues, which appears to have negatively affected Europe in the first quarter of 2012, could have a material adverse effect on our business, operating results, financial condition and cash flows.

During challenging economic times, and in tight credit markets, many customers may delay or reduce capital expenditures. This could result in reductions in revenue of our products, longer sales cycles, difficulties in collection of accounts receivable, slower adoption of new technologies and increased price competition. If global economic and market conditions, or economic conditions in the U.S., Europe or other key markets, deteriorate, we could experience a material and adverse effect on our business, results of operations, financial condition and cash flows.

Our customer base is concentrated and we are regularly involved in relatively large transactions. The loss of one or more of our key customers, a failure to diversify our customer base, or a decrease in the number of such larger transactions could harm our business.

Historically, a majority of our revenue has been derived from relatively few customers, due in part to the consolidation of the ownership of cable television and direct broadcast satellite system companies. In the last three fiscal years and particularly in 2011, revenue from our ten largest customers has decreased as a percentage of revenue, due to our growing customer base, in part as a result of the acquisitions of Scopus and Omneon. Nevertheless, sales to our ten largest customers in our first quarter ended March 30, 2012, and in the fiscal years ended December 31, 2011 and 2010, accounted for approximately 40%, 35% and 44% of revenue, respectively. Although we are attempting to broaden our customer base by penetrating new markets and further expanding internationally, we expect to see continuing industry consolidation and customer concentration.

In our first quarter ended March 30, 2012, and in the fiscal years ended December 31, 2011 and 2010, revenue from Comcast accounted for approximately 10%, 11% and 17%, respectively, of our revenue. The loss of Comcast or any significant customer, any material reduction in orders by Comcast or any significant customer, or our failure to qualify our new products with a significant customer could materially and adversely affect our operating results, financial condition and cash flows. In addition, we are involved in most quarters in one

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or more relatively large individual transactions, including, from time to time, projects in which we act much like a systems integrator. A decrease in the number of the relatively larger individual transactions in which we are involved in any quarter could adversely affect our operating results for that quarter.

As a result of these and other factors, we may be unable to increase our revenues from telco and broadcast and media customers and other markets, or to do so profitably, and any failure to increase revenues and profits from these customers could materially and adversely affect our operating results, financial condition and cash flows.

We depend significantly on our international revenue and are subject to the risks associated with international operations, which may negatively affect our operating results.

Revenue derived from customers outside of the U.S. in our first quarter ended March 30, 2012, and in the fiscal years ended December 31, 2011 and 2010, represented approximately 52%, 55% and 50% of our revenue, respectively. The decrease in the percentage of our revenue attributable to international operations in the first quarter of 2012 primarily resulted from a substantial decrease in sales in Europe. However, we expect that international revenue is likely to continue to represent, from year to year, a growing percentage of our annual revenue for the foreseeable future. Furthermore, most of our contract manufacturing occurs overseas. Our international operations, the international operations of our contract manufacturers, and our efforts to maintain and increase revenue in international markets are subject to a number of risks, which are generally greater with respect to emerging market countries, including the impact on our business and operating results of:

• a slowdown or leveling off in international economies, particularly in Europe, which may adversely affect our customers’ capital spending;

• fluctuations in currency exchange rates;

• changes in foreign government regulations and telecommunications standards;

• import and export license requirements, tariffs, taxes and other trade barriers;

• a significant reliance on distributors, resellers and other third parties to sell our products and solutions, particularly in emerging market countries;

• availability of credit, particularly in emerging market countries;

• difficulty in collecting accounts receivable, especially from smaller customers and resellers, particularly in emerging market countries;

• compliance with the U.S. Foreign Corrupt Practices Act, or FCPA, particularly in emerging market countries;

• compliance with the U.K. Bribery Act, particularly in emerging market countries;

• the burden of complying with a wide variety of foreign laws, treaties and technical standards;

• fulfilling “country of origin” requirements for our products for certain customers;

• difficulty in staffing and managing foreign operations;

• political and economic instability, including risks related to terrorist activity, particularly in emerging market countries;

• changes in economic policies by foreign governments;

• lack of basic infrastructure, particularly in emerging market countries; and

• impact of the recent escalating social and political unrest in the Middle East and resulting regime changes.

In the past, certain of our international customers accumulated significant levels of debt and engaged in reorganizations and financial restructurings, including bankruptcy proceedings. Even where these restructurings have been completed, in some cases these customers have not been in a position to purchase new equipment at levels we had seen in the past.

While our international revenue and operating expenses have typically been denominated in U.S. dollars, fluctuations in currency exchange rates could cause our products to become relatively more expensive to customers

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in a particular country, leading to a reduction in revenue or profitability from sales in that country. A portion of our European business is denominated in Euros, which subjects us to increased foreign currency risk. Gains and losses on the conversion to U.S. dollars of accounts receivable, accounts payable and other monetary assets and liabilities arising from international operations may contribute to fluctuations in operating results.

Furthermore, payment cycles for international customers are typically longer than those for customers in the U.S. Unpredictable payment cycles could cause us to fail to meet or exceed the expectations of security analysts and investors for any given period.

Our operations outside the United States also require us to comply with a number of United States and international regulations. For example, our operations in countries outside the United States are subject to the FCPA and similar laws, which prohibit United States companies or their agents and employees from providing anything of value to a foreign official for the purposes of influencing any act or decision of these individuals, in their official capacity, to help obtain or retain business, direct business to any person or corporate entity, or obtain any unfair advantage. Our activities in countries outside the United States create the inherent risk of unauthorized payments or offers of payments by one of our employees or agents, including those companies to which we outsource certain of our business operations, which could be in violation of the FCPA, even though these parties are not always subject to our control. We have internal control policies and procedures with respect to FCPA compliance, have implemented FCPA training and compliance programs for our employees, and include in our agreements with distributors and resellers a requirement that those parties comply with the FCPA. However, we cannot assure you that our policies, procedures and programs will prevent violations of the FCPA or similar laws by our employees or agents, particularly in emerging market countries, and as we expand our international operations. Any such violation, even if prohibited by our policies, could result in criminal or civil sanctions against us.

The effect of one or more of these international risks could have a material and adverse effect on our business, financial condition, operating results and cash flows.

Our future growth depends on market acceptance of several broadband services, on the adoption of new broadband technologies, and on several other broadband industry trends.

Future demand for many of our products will depend significantly on the growing market acceptance of emerging broadband services, including digital video, VOD, HDTV, IPTV, mobile video services (particularly streaming to tablet computers and other mobile devices), and very high-speed data services. The market demand for such emerging services is rapidly growing, with many de facto or proprietary systems in use, which increases the challenge of delivering interoperable products intended to address the requirements of such services.

The effective delivery of these services will depend, in part, on a variety of new network architectures, standards and devices, such as:

• video compression standards, such as high efficiency video coding (“HEVC”);

• fiber to the premises, or FTTP, networks designed to facilitate the delivery of video services by telcos;

• the greater use of protocols such as IP;

• the converged cable access platform;

• the further adoption of bandwidth-optimization techniques, such as switched digital video and DOCSIS 3.0; and

• the introduction of new consumer devices, such as advanced set-top boxes, personal video recorders (or PVRs), iPads and other tablet computers, and a variety of smartphone mobile devices.

If adoption of these emerging services and/or technologies is not as widespread or as rapid as we expect, or if we are unable to develop new products based on these technologies on a timely basis, our operating results, financial condition and cash flows could be materially and adversely affected.

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Furthermore, other technological, industry and regulatory trends and requirements will affect the growth of our business. These trends and requirements include the following:

• convergence, or the need of many network operators to deliver a package of video, voice and data services to consumers, including mobile delivery options;

• the increasing availability of traditional broadcast video content on the Internet;

• adoption of high bandwidth wireless technology, such as 3G and 4G-LTE;

• the use of digital video by businesses, governments and educational institutions;

• efforts by regulators and governments in the U.S. and abroad to encourage the adoption of broadband and digital technologies;

• increased consumer interest in 3D television and content;

• the need to develop partnerships with other companies involved in the new broadband services;

• the extent and nature of regulatory attitudes towards such issues as network neutrality, competition between operators, access by third parties to networks of other operators, local franchising requirements for telcos to offer video, and other new services, such as mobile video; and

• the outcome of litigation and negotiations between content owners and service providers regarding rights of service providers to store and distribute recorded broadcast content, which outcomes may drive adoption of one technology over another in some cases.

If we fail to recognize and respond to these trends, by timely developing products, features and services required by these trends, we are likely to lose revenue opportunities and our operating results, financial condition and cash flows could be materially and adversely affected.

We purchase several key components, subassemblies and modules used in the manufacture or integration of our products from sole or limited sources, and we are increasingly dependent on contract manufacturers and other subcontractors.

Many components, subassemblies and modules necessary for the manufacture or integration of our products are obtained from a sole supplier or a limited group of suppliers. For example, we depend on a small private company for certain video encoding chips which are incorporated into several products. Our reliance on sole or limited suppliers, particularly foreign suppliers, and our increasing reliance on contractors for manufacturing and installation, involves several risks, including a potential inability to obtain an adequate supply of required components, subassemblies or modules, reduced control over costs, quality and timely delivery of components, subassemblies or modules, and timely installation of products. In particular, certain optical components have in the past been in short supply and are available only from a small number of suppliers, including sole source suppliers. These risks could be heightened during a substantial economic slowdown, because our suppliers and subcontractors are more likely to experience adverse changes in their financial condition and operations during such a period. Further, these risks could materially and adversely affect our business if one of our sole sources, or a sole source of one of our suppliers or contract manufacturers, is adversely affected by a natural disaster. While we expend resources to qualify additional component sources, consolidation of suppliers and the small number of viable alternatives have limited the results of these efforts. Managing our supplier and contractor relationships is particularly difficult during time periods in which we introduce new products and during time periods in which demand for our products is increasing, especially if demand increases more quickly than we expect.

From time to time we assess our relationship with our contract manufacturers, and we do not generally maintain long-term agreements with any of our suppliers or contract manufacturers. Plexus Services Corp., which manufactures our products at its facilities in Malaysia, acts as our primary contract manufacturer, and currently provides us with a majority of the products that we purchase from our contract manufacturers. Our agreement with Plexus has automatic annual renewals, unless prior notice is given by either party, and has been automatically renewed until October 2012.

Since October 2009, most of the products previously manufactured by our Israeli operations have been outsourced to third party manufacturers located in Israel. Our ability to improve production efficiency with respect to that business may be limited by the terms of research grants that we received from the Israeli Office of the Chief

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Scientist, or OCS, an arm of the Israeli government. These grants restrict the transfer outside of Israel of intellectual property developed with funding from the OCS, and also limit the manufacturing outside of Israel of products containing such intellectual property.

Difficulties in managing relationships with any of our current contract manufacturers, particularly Plexus, that manufacture our products off-shore, could impede our ability to meet our customers’ requirements and adversely affect our operating results. An inability to obtain adequate and timely deliveries, or any other circumstance that would require us to seek alternative sources of supply, could negatively affect our ability to ship our products on a timely basis, which could damage relationships with current and prospective customers and harm our business and materially and adversely affect our revenues and other operating results. We attempt to limit this risk by maintaining safety stocks of certain components, subassemblies and modules. Recent increases in demand on our suppliers and subcontractors from other parties have caused sporadic shortages of certain components and products. In response, we have increased our inventories of certain components and products and expedited shipments of our products when necessary, which has increased our costs. As a result of this investment in inventories, we have in the past been, and in the future may be, subject to risk of excessive or obsolete inventories, which, despite our use of a demand order fulfillment model, could materially and adversely affect our business, operating results, financial position and cash flows. In this regard, our gross margins and operating results have, in the past, been adversely affected by significant excess and obsolete inventory charges.

Our ability to meet customer demand depends significantly on the availability of components and other materials, as well as the ability of our contract manufacturers to scale their production, and because we purchase several key components, subassemblies and modules used in the manufacture or integration of our products from sole or limited sources, this increases the risk of not meeting customer demand. Our ability to meet customer requirements depends in part on our ability to obtain sufficient volumes of these materials in a timely fashion. Increases in demand on our suppliers and subcontractors from other customers may cause sporadic shortages of certain components and products. In order to be able to respond to these issues, we have increased our inventories of certain components and products, particularly for our customers that order significant dollar amounts of our products, and expedited shipments of components, subassemblies and modules when necessary, which has increased our costs and could increase our risk of holding obsolete or excessive inventory. We also employ a demand order fulfillment model which is designed to reduce the effects of increases or decreases in demand for any products. Nevertheless, we may be unable to respond to customer demand that increases more quickly than we expect. If we fail to meet customers’ supply expectations, our revenue would be adversely affected and we may lose business, which could materially and adversely affect our operating results, financial condition and cash flows.

Our operating results are likely to fluctuate significantly and, as a result, may fail to meet or exceed the expectations of securities analysts or investors, causing our stock price to decline.

Our operating results have fluctuated in the past and are likely to continue to fluctuate in the future, on an annual and a quarterly basis, as a result of several factors, many of which are outside of our control. Some of the factors that may cause these fluctuations include:

• the level and timing of capital spending of our customers, in the U.S., Europe and in other foreign markets, due in part to access to financing, including credit, for capital spending;

• economic and financial conditions specific to each of the cable, satellite and telco, and broadcast and media industries;

• changes in market demand for our products or our customers’ services or products;

• the timing and amount of orders, especially from our significant customers;

• general economic and financial markets conditions, whether global or in certain geographic areas;

• the mix of our products sold and the effect it has on gross margins;

• the timing of revenue recognition from solution contracts, which may span several quarters;

• increases and decreases in the number and size of relatively larger individual transactions, and projects in which we are involved, from quarter to quarter;

• the timing of revenue recognition on sales arrangements;

• the timing of acquisitions and the financial impact of such acquisitions;

• the timing of completion of our customers’ projects;

• competitive market conditions, including pricing actions by our competitors;

• lack of predictability in our revenue cycles;

• the level and mix of our international revenue;

• new product introductions by our competitors or by us;

• changes in domestic and international regulatory environments affecting our business;

• market acceptance of our products, particularly our new products;

• the evaluation of new services, new standards and system architectures by our customers;

• the cost and timely availability to us of components, subassemblies and modules;

• the mix of our customer base, by industry and size, and sales channels;

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• changes in our operating and extraordinary expenses;

• impairment of our goodwill and intangibles;

• the impact of litigation, such as related litigation expenses and settlement costs;

• write-downs of inventory and investments;

• whether the research and development tax credit in place prior to 2012 is renewed;

• changes in our effective federal tax rate, including as a result of changes in our valuation allowance against our deferred tax assets, and changes in our effective state tax rates, including as a result of apportionment;

• changes in our mix of domestic versus international revenue;

• changes to tax rules related to the deferral of foreign earnings and compliance with foreign tax rules;

• the impact of applicable accounting guidance on accounting for uncertainty in income taxes that requires us to establish reserves for uncertain tax positions and accrue potential tax penalties and interest;

• the impact of applicable accounting guidance on business combinations that requires us to record charges for certain acquisition related costs and expenses and generally to expense restructuring costs associated with a business combination subsequent to the acquisition date; and

• the timing of our development of custom products and software.

The timing of deployment of our products by our customers can be subject to a number of other risks, including the availability of skilled engineering and technical personnel, the availability of third party equipment and services, our customers’ ability to negotiate and enter into rights agreements with video content owners that provide the customers with the right to deliver certain video content, and our customers’ need for local franchise and licensing approvals.

We often recognize a substantial portion of our quarterly revenue in the last month of the quarter. We establish our expenditure levels for product development and other operating expenses based on projected revenue levels for a specified period, and expenses are relatively fixed in the short term. Accordingly, even small variations in the timing of revenue, particularly from relatively large individual transactions, can cause significant fluctuations in operating results in a particular quarter.

As a result of these factors and other factors, our operating results in one or more future periods may fail to meet or exceed the expectations of securities analysts or investors. In that event, the trading price of our common stock would likely decline.

Fluctuations in our future effective tax rates could affect our future operating results, financial condition and cash flows.

We are required to periodically review our deferred tax assets and determine whether, based on available evidence, a valuation allowance is necessary. Accordingly, we have performed such evaluation, from time to time, based on historical evidence, trends in profitability, expectations of future taxable income and implemented tax planning strategies. We continue to maintain a valuation allowance for certain foreign deferred tax assets, and recorded a valuation allowance on certain of our California deferred tax assets in the first quarter of 2009 as a result of our expectations of future usage of the California deferred tax assets. In the event, in the future, we determine an additional valuation allowance is necessary with respect to our U.S. or foreign deferred tax assets, we would incur a charge equal to the amount of the valuation allowance in the period in which we made such determination as a discrete item, and this could have a material and adverse effect on our operating results for such period.

The calculation of tax liabilities involves dealing with uncertainties in the application of complex global tax regulations. We recognize potential liabilities for anticipated tax audit issues in the U.S. and other tax jurisdictions based on our estimate of whether, and the extent to which, additional taxes will be due. In the event we determine that it is appropriate to create a reserve or increase an existing reserve for any such potential liabilities, the amount

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of the additional reserve is charged as an expense in the period in which it is determined. If payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities would result in tax benefits being recognized in the period when we determine the liabilities are no longer necessary. If the estimate of tax liabilities proves to be less than the ultimate tax assessment for the applicable period, a further charge to expense in the period such short fall is determined would result. Either such charge to expense could have a material and adverse effect on our results of operations for the applicable period.

In addition, recent statements from the Internal Revenue Service have indicated their intent to seek greater disclosure by companies of their reserves for uncertain tax positions.

Our 2007, 2008, and 2009 U.S. corporate income tax returns are presently being audited by the Internal Revenue Service. These audits commenced in the second quarter of 2011. A subsidiary of the Company is under audit by the Israel tax authority for the years 2007 through 2010. These audits commenced in the first quarter of 2012. If, upon the conclusion of these audits, the ultimate determination of taxes owed in the U.S. or Israel is for an amount in excess of the tax provision we have recorded in the applicable period, our overall tax expense, effective tax rate and operating results could be materially and adversely impacted in the period of adjustment.

We have requested an Advanced Pricing Agreement with the Internal Revenue Service regarding our non-exclusive license of our intellectual property rights to one of our international subsidiaries in 2008, and our sharing of research and development costs with our international subsidiaries. If the Internal Revenue Service is unwilling to enter into such agreement on substantially the terms we have proposed and we are ultimately forced to settle on terms that are unfavorable to us, we may be required to take a charge to expense, in the period of the settlement, arising from such unfavorable terms that could have a material and adverse effect on our operating results for such period. We completed the same non-exclusive license of Omneon intellectual property in the fourth quarter of 2010, and may request the Internal Revenue Service to enter into an Advanced Pricing Agreement with respect to the Omneon license, which will have the same risk to us as the Advanced Pricing Agreement we are presently negotiating.

We continue to be in the process of expanding our international operations and staffing to better support our expansion into international markets. This expansion involves the implementation of an international structure that includes, among other things, an international support center in Europe, a research and development cost-sharing arrangement, and certain licenses and other contractual arrangements between us and our wholly-owned domestic and foreign subsidiaries. As a result of these changes, we anticipate that our consolidated pre-tax income will be subject to foreign tax at relatively lower tax rates when compared to the United States federal statutory tax rate and, as a consequence, our effective income tax rate is expected to be lower than the United States federal statutory rate.

Our future effective income tax rates could be adversely affected if tax authorities challenge our international tax structure or if the relative mix of United States and international income changes for any reason. Accordingly, there can be no assurance that our income tax rate will be less than the United States federal statutory rate in future periods.

We or our customers may face intellectual property infringement claims from third parties.

Our industry is characterized by the existence of a large number of patents and frequent claims and related litigation regarding patent and other intellectual property rights. In particular, leading companies in the telecommunications industry have extensive patent portfolios. From time to time, third parties have asserted, and may assert in the future, patent, copyright, trademark and other intellectual property rights against us or our customers. Our suppliers and their customers, including us, may have similar claims asserted against them. A number of third parties, including companies with greater financial and other resources than us, have asserted patent rights to technologies that are important to us.

Any future intellectual property litigation, regardless of its outcome, could result in substantial expense and significant diversion of the efforts of our management and technical personnel. An adverse determination in any such proceeding could subject us to significant liabilities and temporary or permanent injunctions and require us to

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seek licenses from third parties or pay royalties that may be substantial. Furthermore, necessary licenses may not be available on terms satisfactory to us, or at all. An unfavorable outcome on any such litigation matter could require that we pay substantial damages, could require that we pay ongoing royalty payments, or could prohibit us from selling certain of our products. Any such outcome could have a material and adverse effect on our business, operating results, financial condition and cash flows.

In October 2011, Avid Technology, Inc. filed a complaint in the United States District Court for the District of Delaware, alleging that our Omneon Media Grid product infringes two patents held by Avid. The complaint seeks injunctive relief and damages. We are currently evaluating our position with respect to these patents. At this time, we cannot predict the outcome of this matter. An unfavorable outcome of this matter could adversely affect our business, operating results, financial position and cash flows.

Our suppliers and customers may have intellectual property claims relating to our products asserted against them. We have agreed to indemnify some of our suppliers and most of our customers for patent infringement relating to our products. The scope of this indemnity varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorney’s fees) incurred by the supplier or customer in connection with such claims. If a supplier or a customer seeks to enforce a claim for indemnification against us, we could incur significant costs defending such claim, the underlying claim or both. An adverse determination in either such proceeding could subject us to significant liabilities and have a material and adverse effect on our operating results, cash flows and financial condition.

We may be the subject of litigation which, if adversely determined, could harm our business and operating results.

In addition to the litigation discussed elsewhere herein, we may be subject to claims arising in the normal course of business. The costs of defending any litigation, whether in cash expenses or in management time, could harm our business and materially and adversely affect our operating results and cash flows. An unfavorable outcome on any litigation matter could require that we pay substantial damages, or, in connection with any intellectual property infringement claims, could require that we pay ongoing royalty payments or prohibit us from selling certain of our products. In addition, we may decide to settle any litigation, which could cause us to incur significant settlement costs. A settlement or an unfavorable outcome on any litigation matter could have a material and adverse affect on our business, operating results, financial condition and cash flows.

As an example, we have received letters from several of our customers, notifying us that the customer intends to exercise its indemnification rights in agreements between the customer and us with respect to a patent infringement claim brought against the customer that may cover products sold to the customer by Harmonic or its acquired companies. Many of these notices arise out of a spate of patent infringement claims, and related litigation, brought by the Multimedia Patent Trust (“MPT”), an affiliate of Alcatel-Lucent, against end-users of products used in the industries we address. Any such litigation by MPT may be very expensive to defend, and there could be significant financial exposure to each of such customers if MPT is successful in such litigation or in extracting a settlement of such claims. Few of the notices we have received from a customer with respect to its indemnification rights related to the MPT litigation have demanded that we provide a defense for the customer against such claims or litigation, currently reimburse the customer for its costs of such defense, or pay any other specified sum to the customer. We cannot predict whether the claims by MPT are legitimate or actually cover any of our products, whether the claims are likely to result in a settlement or judgment against a customer defendant (although some such settlements have occurred), or whether we would have liability under our indemnification obligations for defense or settlement costs or damages paid by any customer defendant. In the event one or more of our customers makes a written indemnification claim against us with respect to a specific amount of defense or settlement costs or damages it suffers as a result of such MPT claims or litigation, we could be obligated to pay amounts to such customers that would materially and adversely affect our operating results, financial condition and cash flows.

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We rely on distributors, value-added resellers and systems integrators for a significant portion of our revenue, and disruptions to, or our failure to develop and manage, our relationships with these customers and the processes and procedures that support them could adversely affect our business.

We generate a significant percentage of our revenue through sales to distributors, value-added resellers, or VARs, and systems integrators that assist us with fulfillment or installation obligations. We expect that these sales will continue to generate a significant percentage of our revenue in the future. Further, our reliance on VARs and systems integrators that specialize in video delivery solutions, products and services has increased since the completion of our acquisition of Omneon in September 2010. Accordingly, our future success is highly dependent upon establishing and maintaining successful relationships with a variety of channel partners.

We generally have no long-term contracts or minimum purchase commitments with any of our distributor, VAR or system integrator customers, and our contracts with these parties do not prohibit them from purchasing or offering products or services that compete with ours. Our competitors may provide incentives to any of our distributor, VAR and systems integrator customers to favor their products or, in effect, to prevent or reduce sales of our products. Any of our distributor, VAR or systems integrator customers may independently choose not to purchase or offer our products. Many of our distributors, VARs and system integrators are small, are based in a variety of international locations, and may have relatively unsophisticated processes and limited financial resources to conduct their business. Any significant disruption of our sales to these customers, including as a result of the inability or unwillingness of these customers to continue purchasing our products, or their failure to properly manage their business with respect to the purchase of and payment for our products, could materially and adversely affect our business, operating results, financial condition and cash flows. In addition, our failure to continue to establish or maintain successful relationships with distributor, VAR and systems integrator customers could likewise materially and adversely affect our business, operating results, financial condition and cash flows.

Changes in telecommunications legislation and regulations could harm our prospects and future revenue.

Changes in telecommunications legislation and regulations in the U.S. and other countries could affect the revenue from our products. In particular, regulations dealing with access by competitors to the networks of incumbent operators could slow or stop additional construction or expansion by these operators. Increased regulation of our customers’ pricing or service offerings could limit their investments and, consequently, revenue from our products. The impact of new or revised legislation or regulations could have a material adverse effect on our business, operating results, financial condition and cash flows.

Newly adopted Federal laws will likely impact the demand for product features by our customers. These laws include the Commercial Advertisement Loudness Mitigation Act and the Twenty-First Century Communications and Video Accessibility Act of 2010, which deals with accessibility for the hearing and visually impaired. While we have added some features to our products in anticipation of these laws, others (driven by the regulatory process related to the laws) may require feature development on a schedule which may be inflexible and difficult to meet. This could result in our inability to develop other product features necessary for particular transactions at the same time, and thus we could lose some business and the related revenue.

The ongoing threat of terrorism, social and political instability and tensions among countries have created uncertainty and may harm our business.

Conditions in the U.S. and global economies improved from mid-2010 to mid-2011, but remain uncertain. The terrorist attacks in the U.S. in 2001, subsequent and continuing attempted and accomplished terrorist attacks in other parts of the world, and the threat of future attacks have created many economic and political uncertainties that have adversely impacted the global economy and, as a result, have adversely affected our business. The long-term effects of such attacks, the threat of future attacks, the ongoing war on terrorism, recent increased social and political instability and regime changes, particularly in the Middle East, and tensions among countries, including between Iran and Israel and the U.S., on our business and the global economy remain uncertain. Such uncertainty has increased the price of certain commodities, particularly oil, which could have an indirect material and adverse impact on the cost of manufacturing and shipping our products. Moreover, the potential for future terrorist attacks, increases in such social and political instability and increases in such tensions, particularly if Israel or any other country were to attack any of Iran’s nuclear development facilities, make it difficult to estimate the long-term stability and strength of the U.S. and other economies, particularly those in certain emerging market countries and certain European countries, and the impact of resulting economic conditions on our business.

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We face risks associated with having important facilities and resources located in Israel.

We maintain facilities in two locations in Israel with a total of 218 employees, or approximately 19% of our worldwide workforce, as of March 30, 2012. Our employees in Israel engage in a number of activities, including research and development, the development of, and supply chain management for, one product line, and sales activities.

We are directly influenced by the political, economic and military conditions affecting Israel. Any significant conflict involving Israel could have a direct effect on our business or that of our Israeli contract manufacturers, in the form of physical damage or injury, reluctance to travel within, or to or from, Israel by our Israeli and other employees or those of our subcontractors, or the loss of Israeli employees to active military duty. Most of our employees in Israel are currently obligated to perform annual reserve duty in the Israel Defense Forces, and approximately 14% of those employees were called for active military duty in 2011. In the event that more employees are called to active duty, certain of our research and development activities may be adversely affected, including significantly delayed. In addition, the interruption or curtailment of trade between Israel and its trading partners, as a result of terrorist attacks or hostilities, conflicts between Israel and any other Middle Eastern country, or any other cause, could significantly harm our business. Current or future tensions in the Middle East could materially and adversely affect our business, results of operations and financial condition.

We have made, and expect to continue to make, acquisitions, and any acquisition could disrupt our operations, cause dilution to our stockholders and materially and adversely affect our business, operating results, cash flows and financial condition.

As part of our business strategy, from time to time we have acquired, and we continue to consider acquiring, businesses, technologies, assets and product lines that we believe complement or expand our existing business. Most recently, in September 2010, we completed the acquisition of Omneon, a privately-held company that provides broadcast video server and storage systems used for video production and play-to-air workflows. It is possible that we will make additional acquisitions, from time to time, in the future.

We may face challenges as a result of these acquisition activities, because such activities entail numerous risks, including:

• the possibility that an acquisition may not close because of, among other things, a failure of a party to satisfy the conditions to closing or an acquisition target entering into an alternative transaction;

• unanticipated costs or delays associated with the acquisition;

• difficulties in the assimilation and integration of acquired operations, technologies and/or products;

• the diversion of management’s attention from the regular operations of the business during the acquisition process;

• the challenges of managing a larger and more geographically widespread operation and product portfolio after the closing of the acquisition;

• difficulties in integrating acquired companies’ systems, controls, policies and procedures, particularly to comply with the internal control over financial reporting requirements of the Sarbanes-Oxley Act of 2002;

• adverse effects on new and existing business relationships with suppliers, contract manufacturers and customers;

• channel conflicts and disputes between distributors and other partners of ours and the acquired companies;

• potential difficulties in completing projects associated with in-process research and development;

• risks associated with entering markets in which we may have no or limited prior experience;

• the potential loss of key employees of acquired businesses;

• difficulties in the assimilation of different corporate cultures and practices;

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• difficulties in bringing acquired products and businesses into compliance with applicable legal requirements in jurisdictions in which we operate and sell products;

• substantial charges for acquisition costs, which are required to be expensed under accounting guidance on business combinations;

• substantial charges for the amortization of certain purchased intangible assets, deferred stock compensation or similar items;

• substantial impairments to goodwill or intangible assets in the event that an acquisition proves to be less valuable than the price we paid for it;

• delays in realizing, or failure to realize, the anticipated benefits of an acquisition; and

• the possibility that any acquisition may be viewed negatively by our customers or investors or the financial markets.

Competition within our industry for acquisitions of businesses, technologies, assets and product lines has been, and is likely to continue to be, intense. As such, even if we are able to identify an acquisition that we would like to consummate, we may not be able to complete the acquisition on commercially reasonable terms or because the target chooses to be acquired by another company. Furthermore, in the event that we are able to identify and consummate any future acquisitions, we may, in each of those acquisitions:

• issue equity securities which would dilute current stockholders’ percentage ownership;

• incur substantial debt to finance the acquisition or assume substantial debt in the acquisition;

• incur significant acquisition-related expenses;

• assume substantial liabilities, contingent or otherwise; or

• expend significant cash.

These financing activities or expenditures could materially and adversely affect our operating results, cash flows and financial condition or the price of our common stock, or both. Alternatively, due to difficulties in the capital or credit markets, we may be unable to secure capital on reasonable terms, or at all, necessary to complete an acquisition.

Moreover, even if we were to obtain benefits from acquisitions in the form of increased revenue and earnings per share, there may be a delay between the time the expenses associated with an acquisition are incurred and the time we recognize such benefits.

As of March 30, 2012, we had approximately $212.5 million of goodwill recorded on our balance sheet associated with prior acquisitions. In the event the market price of our common stock was to decline materially from its present price for an extended period of time, the Company may determine that its goodwill is impaired. If such determination is made, the Company would be required to write down all or a portion of such goodwill, which could result in a material non-cash charge to our results of operations in the period in which such write-down occurs.

If we are unable to successfully address any of these risks, our business, operating results, financial condition and cash flows could be materially and adversely affected.

Broadband communications markets are characterized by rapid technological change.

Broadband communications markets are subject to rapid changes, making it difficult to accurately predict the markets’ future growth rates, sizes or technological directions. In view of the evolving nature of these markets, it is possible that pay TV service providers, broadcasters, content providers and other video production and delivery companies will decide to adopt alternative architectures, new business models, and/or technologies that are incompatible with our current or future products. In addition, successful new entrants into the media markets, both domestic and international, may impact existing industry business models, resulting in decreased spending by our existing customer base. Finally, decisions by customers to adopt new technologies or products are often delayed by extensive evaluation and qualification processes, which can result in delays in revenue from current and new products. If we are unable to design, develop, manufacture and sell products that incorporate, or are compatible with, these new architectures or technologies, our business, operating results, financial condition and cash flows would be materially and adversely affected.

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Our operating results could be adversely affected by natural disasters affecting the Company or impacting our third-party manufacturers, suppliers, distributors or customers.

Our headquarters and the majority of our operations are located in California, which is prone to earthquakes. In the event that any of our business centers are adversely affected by an earthquake or by any other natural disaster, we may sustain damage to our operations and properties and suffer significant financial losses.

We rely on third-party manufacturers for the production of most of our products. Any significant disruption in the business or operations of such manufacturers or of our suppliers could adversely impact our business. Our principal third-party manufacturer and several of our suppliers, distributors and customers have operations in locations that are subject to natural disasters, such as severe weather and earthquakes, which could disrupt their operations and, in turn, our operations. In addition, if there is a major earthquake or other natural disaster in any of the locations in which our significant customers are located, we face the risk that our customers may incur losses, or sustained business interruption and/or loss, which may materially impair their ability to continue their purchase of products from us. Accordingly, a major earthquake or other natural disaster in one of the geographies in which we, or our third-party manufacturers, suppliers or customers, operate could have a material and adverse effect on our business, operating results, cash flows and financial condition.

In order to manage our growth, we must be successful in addressing management succession issues and attracting and retaining qualified personnel.

Our future success will depend, to a significant extent, on the ability of our management to operate effectively, both individually and as a group. We must successfully manage transition and replacement issues that may result from the departure or retirement of members of our executive management, whether in the context of an acquisition or otherwise. We cannot provide assurances that changes of management personnel in the future would not cause disruption to operations or customer relationships or a decline in our operating results.

We are also dependent on our ability to retain and motivate our existing highly qualified personnel, in addition to attracting new highly qualified personnel. Competition for qualified management, technical and other personnel is often intense, and we may not be successful in attracting and retaining such personnel. Competitors and others have in the past attempted, and are likely in the future to attempt, to recruit our employees. While our employees are required to sign standard agreements concerning confidentiality and ownership of inventions, we generally do not have employment contracts or non-competition agreements with any of our personnel. The loss of the services of any of our key personnel, the inability to attract or retain highly qualified personnel in the future or delays in hiring such personnel, particularly senior management and engineers and other technical personnel, could negatively affect our business and operating results.

We may not be able to effectively manage our operations.

In recent years, the Company has grown significantly, principally through acquisitions, and expanded our international operations. Upon the closing of our acquisition of Scopus in the first quarter of 2009, we added 221 employees, most of whom are based in Israel. Upon the closing of the acquisition of Omneon in September 2010, we added 286 employees, most of whom are based in the U.S.

As of March 30, 2012, we have 449 employees in our international operations, representing approximately 39% of our worldwide workforce. Our ability to manage our business effectively in the future, including with respect to any future growth, the integration of recent and any future acquisitions, and the breadth of our international operations, will require us to train, motivate and manage our employees successfully, to attract and integrate new employees into our overall operations, to retain key employees and to continue to improve our operational, financial and management systems. There can be no assurances that we will be successful in any of those regards, and our failure to effectively manage our operations could have a material and adverse effect on our business, operating results, cash flows and financial condition.

Our failure to adequately protect our proprietary rights may adversely affect us.

At March 30, 2012, we held 59 issued U.S. patents and 20 issued foreign patents, and have a number of patent applications pending. Although we attempt to protect our intellectual property rights through patents, trademarks, copyrights, licensing arrangements, maintaining certain technology as trade secrets and other measures, we can give

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no assurances that any patent, trademark, copyright or other intellectual property rights owned by us will not be invalidated, circumvented or challenged, that such intellectual property rights will provide competitive advantages to us, or that any of our pending or future patent applications will be issued with the scope of the claims sought by us, if at all. We can give no assurances that others will not develop technologies that are similar or superior to our technologies, duplicate our technologies or design around the patents that we own. In addition, effective patent, copyright and trade secret protection may be unavailable or limited in certain foreign countries in which we do business or may do business in the future.

We believe that patents and patent applications are not currently significant to our business, and we do not rely on our patent portfolio to give us a competitive advantage over others in our industry. We believe that the future success of our business will depend on our ability to translate the technological expertise and innovation of our personnel into new and enhanced products. We generally enter into confidentiality or license agreements with our employees, consultants, and vendors and our customers, as needed, and generally limit access to, and distribution of, our proprietary information. Nevertheless, we cannot provide assurances that the steps taken by us will prevent misappropriation of our technology. In addition, we have taken in the past, and may take in the future, legal action to enforce our patents and other intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others, or to defend against claims of infringement or invalidity. Such litigation could result in substantial costs and diversion of management time and other resources, and could materially and adversely affect our business, operating results, financial condition and cash flows.

In order to successfully develop and market certain of our planned products, we may be required to enter into technology development or licensing agreements with third parties. Although many companies are often willing to enter into technology development or licensing agreements, we cannot assure you that such agreements may be negotiated on commercially reasonable terms, or at all. The failure to enter into technology development or licensing agreements, when necessary or desirable, could limit our ability to develop and market new products and could materially and adversely affect our business.

Our products include third-party technology and intellectual property, and our inability to use that technology in the future could harm our business.

We incorporate certain third-party technologies, including software programs, into our products, and intend to utilize additional third-party technologies in the future. Licenses to relevant third-party technologies or updates to those technologies may not continue to be available to us on commercially reasonable terms, or at all. In addition, the technologies that we license may not operate properly or as specified, and we may not be able to secure alternatives in a timely manner, either of which could harm our business. We could face delays in product releases until alternative technology can be identified, licensed or developed, and integrated into our products, if we are able to do so at all. These delays, or a failure to secure or develop adequate technology, could materially and adversely affect our business, operating results, financial condition and cash flows.

Further, the Israeli government grants that we received for research and development expenditures limit our ability to manufacture products and transfer technologies outside of Israel, and, if we fail to satisfy specified conditions in the grants, we may be required to refund such grants, together with interest and penalties, and may be subject to criminal charges.

We are subject to import and export controls that could subject us to liability or impair our ability to compete in international markets.

Our products are subject to U.S. export controls, and may be exported outside the United States only with the required level of export license or through an export license exception, in most cases because we incorporate encryption technology into our products. In addition, various countries regulate the import of certain technology and have enacted laws that could limit our ability to distribute our products, or could limit our customers’ ability to implement our products, in those countries. Changes in our products or changes in export and import regulations may create delays in the introduction of our products in international markets, prevent our customers with international operations from deploying our products throughout their global systems or, in some cases, prevent the export or import of our products to certain countries altogether. Any change in export or import regulations or related legislation, shift in approach to the enforcement or scope of existing regulations, or change in the countries, persons or technologies targeted by such regulations, could result in decreased use of our products by, or in our decreased ability to export or sell our products to, existing or potential customers internationally.

46

In addition, we may be subject to customs duties that could have a significant adverse impact on our operating results or, if we are able to pass on the related costs in any particular situation, would increase the cost of the related product to our customers. As a result, the future imposition of significant increases in the level of customs duties or the creation of import quotas on our products in Europe or in other jurisdictions, or any of the limitations on international sales described above, could have a material adverse effect on our business, operating results, financial condition and cash flows. Further, some of our customers in Europe have been, or are being, audited by local governmental authorities regarding the tariff classifications used for importation of our products. Import duties and tariffs vary by country and a different tariff classification for any of our products may result in higher duties or tariffs, which could have an adverse impact on our operating results and potentially increase the cost of the related products to our customers.

We may need additional capital in the future and may not be able to secure adequate funds on terms acceptable to us.

We have been engaged in the design, manufacture and sale of a variety of video products and system solutions since inception, which has required, and will continue to require, significant research and development expenditures.

We believe that our existing cash and short-term investments of $168 million, at March 30, 2012, will satisfy our cash requirements for at least the next twelve months. However, we may need to raise additional funds if our expectations are incorrect, to take advantage of presently unanticipated strategic opportunities, to satisfy our other cash requirements from time to time, or to strengthen our financial position. Our ability to raise funds may be adversely affected by a number of factors, including factors beyond our control, such as weakness in the economic conditions in markets in which we sell our products and continued uncertainty in financial, capital and credit markets. There can be no assurance that equity or debt financing will be available to us on reasonable terms, if at all, when and if it is needed.

In addition, we regularly review potential acquisitions that would complement our existing product offerings, enhance our technical capabilities, or expand our marketing and sales presence. Any future transaction of this nature could require potentially significant amounts of capital to finance the acquisition and related expenses, as well as to integrate operations following the acquisition, and could require us to issue our stock and dilute existing stockholders.

We may raise additional financing through public or private equity offerings, debt financings, or corporate partnership or licensing arrangements. To the extent we raise additional capital by issuing equity securities or convertible debt, our stockholders may experience dilution. To the extent that we raise additional funds through collaboration and licensing arrangements, it may be necessary to relinquish some rights to our technologies or products, or grant licenses on terms that are not favorable to us. To the extent we raise capital through debt financing arrangements, we may be required to pledge assets or enter into covenants that could restrict our operations or our ability to incur further indebtedness.

If adequate capital is not available, or is not available on reasonable terms, when needed, we may not be able to take advantage of acquisition or other market opportunities, to timely develop new products, or to otherwise respond to competitive pressures.

Negative conditions in the global credit and financial markets may impair the liquidity or the value of a portion of our investment portfolio.

Negative conditions in the global credit and financial markets have had an adverse impact on the liquidity of certain of our investments in the past. In the event we need or desire to access funds from the short-term investments that we hold, it is possible that we may not be able to do so due to market conditions. If a buyer is found, but is unwilling to purchase the investments at par or our cost, we may incur a loss. Further, rating downgrades of the security issuer or the third parties insuring such investments may require us to adjust the carrying value of these investments through an impairment charge. Our inability to sell all or some of our short-term investments at par or our cost, or rating downgrades of issuers or insurers of these securities, could materially and adversely affect our operating results, financial condition and cash flows.

47

In addition, we invest our cash, cash equivalents and short-term investments in a variety of investment vehicles, in a number of countries, with, and in the custody of, financial institutions with high credit ratings. While our investment policy and strategy attempt to manage interest rate risk, limit credit risk, and ensure we only invest in what we view as very high-quality securities, the outlook for our investment holdings is dependent on general economic conditions, interest rate trends and volatility in the financial marketplace, which can all affect the income that we receive, the value of our investments and our ability to sell those investments.

We believe that our investment securities are carried at fair value. However, over time the economic and market environment in which we conduct business may provide us with additional insight regarding the fair value of certain securities in our portfolio that could change our judgment regarding impairment of those securities. This could result in unrealized or realized losses in our securities, relating to other than temporary declines, being charged against income. Given current market conditions, particularly in Europe, there is continuing risk that further declines in fair value of our portfolio securities may occur and additional impairments may be charged to income in future periods.

If demand for our products increases more quickly than we expect, we may be unable to meet our customers’ requirements.

If demand for our products increases, the difficulty of accurately forecasting our customers’ requirements and meeting these requirements will increase. Forecasting to meet customers’ needs and effectively managing our supply chain is particularly difficult in connection with newer products. Our ability to meet customer demand depends significantly on the availability of components and other materials, as well as the ability of our contract manufacturers to scale their production. Furthermore, we purchase several key components, subassemblies and modules used in the manufacture or integration of our products from sole or limited sources. Our ability to meet customer requirements depends in part on our ability to obtain sufficient volumes of these materials in a timely fashion. Increases in demand on our suppliers and subcontractors from other customers may cause sporadic shortages of certain components and products. In order to be able to respond to these issues, we have increased our inventories of certain components and products, particularly for our customers that order significant dollar amounts of our products, and expedited shipments of our products when necessary, which has increased our costs and could increase our risk of holding obsolete or excessive inventory. We also employ a demand order fulfillment model which is designed to reduce the effects of increases or decreases in demand for any products. Nevertheless, we may be unable to respond to customer demand that increases more quickly than we expect. If we fail to meet customers’ supply expectations, our revenue would be adversely affected and we may lose business, which could materially and adversely affect our operating results, financial condition and cash flows.

We are subject to various laws and regulations related to the environment and potential climate change that could impose substantial costs upon us and may adversely affect our business, operating results, cash flows and financial condition.

Our operations are regulated under various federal, state, local and international laws relating to the environment and potential climate change, including those governing the management, disposal and labeling of hazardous substances and wastes and the cleanup of contaminated sites. We could incur costs and fines, third-party property damage or personal injury claims, or could be required to incur substantial investigation or remediation costs, if we were to violate or become liable under environmental laws. The ultimate costs to us under these laws and the timing of these costs are difficult to predict.

We also face increasing complexity in our product design as we adjust to new and future requirements relating to the presence of certain substances in electronic products and making producers of those products financially responsible for the collection, treatment, recycling, and disposal of certain products. For example, the European Parliament and the Council of the European Union have enacted the Waste Electrical and Electronic Equipment (WEEE) directive, which regulates the collection, recovery and recycling of waste from electrical and electronic products, and the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (RoHS) directive, which bans the use of certain hazardous materials, including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) that exceed certain

48

specified levels. Legislation similar to RoHS and WEEE has been or may be enacted in other jurisdictions, including in the U.S., Japan and China. Our failure to comply with these laws could result in our being directly or indirectly liable for costs, fines or penalties and third-party claims, and could jeopardize our ability to conduct business in such regions and countries.

We also expect that our operations will be affected by other new environmental laws and regulations on an ongoing basis. Although we cannot predict the ultimate impact of any such new laws and regulations, they will likely result in additional costs, and could require that we redesign or change how we manufacture our products, any of which could have a material and adverse effect on our operating results, financial condition and cash flows.

Some anti-takeover provisions contained in our certificate of incorporation, bylaws and stockholder rights plan, as well as provisions of Delaware law, could impair a takeover attempt.

We have provisions in our certificate of incorporation and bylaws that could have the effect of rendering more difficult or discouraging an acquisition deemed undesirable by our Board of Directors. These include provisions:

• authorizing blank check preferred stock, which could be issued with voting, liquidation, dividend and other rights superior to our common stock;

• limiting the liability of, and providing indemnification to, our directors and officers;

• limiting the ability of our stockholders to call, and bring business before, special meetings;

• requiring advance notice of stockholder proposals for business to be conducted at meetings of our stockholders and for nominations of candidates for election to our Board of Directors;

• controlling the procedures for conduct and scheduling of Board of Directors and stockholder meetings; and

• providing the Board of Directors with the express power to postpone previously scheduled annual meetings and to cancel previously scheduled special meetings.

These provisions, alone or together, could delay hostile takeovers, changes in control of the Company or changes in our management.

In addition, we have adopted a stockholder rights plan. The rights are not intended to prevent a takeover, and we believe these rights will help us in our negotiations with any potential acquirers. However, if the Board of Directors believes that a particular acquisition of us is undesirable, the rights may have the effect of rendering more difficult or discouraging that acquisition. The rights would cause substantial dilution to a person or group that attempts to acquire us on terms, or in a manner, not approved by our Board of Directors, except pursuant to an offer conditioned upon redemption of the rights.

As a Delaware corporation, we are also subject to provisions of Delaware law, including Section 203 of the Delaware General Corporation law, which prevents some stockholders holding more than 15% of our outstanding common stock from engaging in certain business combinations without approval of the holders of substantially all of our outstanding common stock.

Any provision of our certificate of incorporation or bylaws, our stockholder rights plan or Delaware law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our common stock, and could also affect the price that some investors are willing to pay for our common stock.

Our common stock price may be extremely volatile, and the value of an investment in our stock may decline.

Our common stock price has been highly volatile. We expect that this volatility will continue in the future due to factors such as:

• general market and economic conditions;

• actual or anticipated variations in operating results;

• announcements of technological innovations, new products or new services by us or by our competitors or customers;

49

• changes in financial estimates or recommendations by stock market analysts regarding us or our competitors;

• announcements by us or our competitors of significant acquisitions, strategic partnerships, joint ventures or capital commitments;

• announcements by our customers regarding end user market conditions and the status of existing and future infrastructure network deployments;

• additions or departures of key personnel; and

• future equity or debt offerings or our announcements of these offerings.

In addition, in recent years, the stock market in general, and the NASDAQ Stock Market and the securities of technology companies in particular, have experienced extreme price and volume fluctuations. These fluctuations have often been unrelated or disproportionate to the operating performance of individual companies. These broad market fluctuations have in the past, and may in the future, materially and adversely affect our stock price, regardless of our operating results. In these circumstances, investors may be unable to sell their shares of our common stock at or above their purchase price over the short term, or at all.

Our stock price may decline if additional shares are sold in the market or if analysts drop coverage of or downgrade our stock.

Future sales of substantial amounts of shares of our common stock by our existing stockholders in the public market, or the perception that these sales could occur, may cause the market price of our common stock to decline. In addition, we will be required to issue substantial amounts of additional shares upon exercise of stock options or grants of restricted stock units. Increased sales of our common stock in the market after exercise of outstanding stock options or grants of restricted stock units could exert downward pressure on our stock price. These sales also might make it more difficult for us to sell equity or equity-related securities in the future at a time and price we deem appropriate.

The trading market for our common stock relies in part on the availability of research and reports that third-party industry or securities analysts publish about us. If one or more of the analysts who do cover us downgrade our stock, our stock price may decline. If one or more of these analysts cease coverage of us, we could lose visibility in the market, which in turn could cause the liquidity of our stock and our stock price to decline.

We are exposed to additional costs and risks associated with complying with increasing regulation of corporate governance and disclosure standards.

We have spent, and expect to continue to spend, a substantial amount of management time and costly external resources to comply with changes in laws, regulations and standards relating to corporate governance and public disclosure, including the Sarbanes-Oxley Act of 2002, SEC regulations, the NASDAQ Stock Market rules and applicable provisions of the Dodd Frank Act of 2010, particularly section 1502 with respect to “conflict minerals” and proposed SEC disclosure and reporting on that subject. In particular, Section 404 of the Sarbanes-Oxley Act requires management’s annual review and evaluation of our internal control over financial reporting and attestation of the effectiveness of our internal control over financial reporting by our independent registered public accounting firm in connection with the filing of our Report on Form 10-K for each fiscal year. We have documented and tested our internal control systems and procedures and have made improvements in order for us to comply with the requirements of Section 404. This process has required us to hire additional personnel and outside advisory services and has resulted in significant additional expenses.

While our management’s assessment of our internal control over financial reporting resulted in our conclusion that, as of December 31, 2011, our internal control over financial reporting was effective, and our independent registered public accounting firm has attested that our internal control over financial reporting was effective in all material respects as of December 31, 2011, we cannot predict the outcome of our testing and that of our independent registered public accounting firm in future periods. If we conclude in future periods that our internal control over financial reporting is not effective or if our independent registered public accounting firm is unable to provide an unqualified attestation as of future year-ends, we will incur substantial additional costs in an effort to correct such problems and investors may lose confidence in our financial statements, and the price of our stock will likely decrease in the short term, until we correct such problems, and perhaps in the long term, as well.

50

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURE

Not applicable.

ITEM 5. OTHER INFORMATION

None.

51

ITEM 6. EXHIBITS

Exhibit Number	Exhibit Index
31.1	Section 302 Certification of Principal Executive Officer
31.2	Section 302 Certification of Principal Financial Officer
32.1	Section 906 Certification of Principal Executive Officer
32.2	Section 906 Certification of Principal Financial Officer
101***	The following materials from Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 30, 2012, formatted in Extensible Business Reporting Language (XBRL) includes:
	Condensed Consolidated Balance Sheets at March 30, 2012 and December 31, 2011, (ii) Condensed Consolidated Statements of Operations for the Three months ended March 30, 2012 and April 1, 2011, (iii) Condensed Consolidated Statements of Cash Flows for the Three months ended March 30, 2012 and April 1, 2011, and (iv) Notes to Condensed Consolidated Financial Statements.

*** XBRL information is furnished and not filed or a part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Exchange Act of 1933, as amended, is deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise is not subject to liability under these sections.

52

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

HARMONIC INC.
By:	/s/ Carolyn V. Aver
	Carolyn V. Aver
	Chief Financial Officer
	(Principal Financial and Accounting Officer)
	Date: May 9, 2012

53

EX-31.1

Exhibit 31.1

Harmonic Inc.

Certification of Principal Executive Officer

Pursuant to Section 302 of

The Sarbanes-Oxley Act of 2002

I, Patrick J. Harshman, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Harmonic Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant, and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report, based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2012

By:	/s/ Patrick J. Harshman
	Patrick J. Harshman
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Harmonic Inc.

Certification of Principal Financial Officer

Pursuant to Section 302 of

The Sarbanes-Oxley Act of 2002

I, Carolyn V. Aver, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Harmonic Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant, and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report, based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2012

By:	/s/ Carolyn V. Aver
	Carolyn V. Aver
	Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

Harmonic Inc.

Certification of Principal Executive Officer

Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

As of the date hereof, I, Patrick J. Harshman, President and Chief Executive Officer of Harmonic Inc. (the “Company”), certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Company’s Quarterly Report on Form 10-Q for the quarter ended March 30, 2012, as filed with the Securities and Exchange Commission (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. This written statement is being furnished to the Securities and Exchange Commission as an exhibit accompanying such Report and shall not be deemed filed pursuant to the Securities Exchange Act of 1934, as amended.

Date: May 9, 2012

/s/ Patrick J. Harshman

Patrick J. Harshman

President and Chief Executive Officer

(Principal Executive Officer)

EX-32.2

Exhibit 32.2

Harmonic Inc.

Certification of Principal Financial Officer

Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

As of the date hereof, I, Carolyn V. Aver, Chief Financial Officer of Harmonic Inc. (the “Company”), certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Company’s Quarterly Report on Form 10-Q for the quarter ended March 30, 2012, as filed with the Securities and Exchange Commission (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. This written statement is being furnished to the Securities and Exchange Commission as an exhibit accompanying such Report and shall not be deemed filed pursuant to the Securities Exchange Act of 1934, as amended.

Date: May 9, 2012

/s/ Carolyn V. Aver

Carolyn V. Aver

Chief Financial Officer

(Principal Financial Officer)

XML

Goodwill and Identified Intangibles (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	$ 21,669
2013	27,328
2014	20,520
2015	6,497
2016	4,097
Total	80,111
Cost of revenue [Member]
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	15,144
2013	19,232
2014	13,745
2015	714
Total	48,835
Operating expenses [Member]
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	6,525
2013	8,096
2014	6,775
2015	5,783
2016	4,097
Total	$ 31,276

XML

Commitments and Contingencies (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Summary of warranty accrual included in accrued liabilities
Balance at beginning of period	$ 5,558	$ 4,811
Accrual for current period warranties	1,619	2,262
Warranty costs incurred	(2,044)	(1,810)
Balance at end of period	$ 5,133	$ 5,263

XML

Stock-Based Compensation (Details 2) (Employee Stock Purchase Plan [Member])	3 Months Ended
	Mar. 30, 2012 Y	Apr. 01, 2011 Y
Employee Stock Purchase Plan [Member]
Weighted average assumptions:
Expected term	0.5	0.5
Volatility	53.00%	54.00%
Risk-free interest rate	0.20%	0.30%
Expected dividends	0.00%	0.00%

XML

Commitments and Contingencies (Details Textual)	Mar. 30, 2012 USD ($)	Mar. 31, 2010 USD ($)	Mar. 31, 2010 ILS
Additional Guarantees (Textual) [Abstract]
Guarantees outstanding	$ 0
Guarantees (Textual) [Abstract]
Accrual for indemnification provisions	0
Non-cancelable purchase commitments	24,000,000
Maximum amount of potential future payments under the company's financial guarantees	1,100,000
Amount of ex-parte judgment		$ 1,700,000	6,300,000

XML

Stock-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Stock-based compensation costs
Total employee stock-based compensation recognized in statement of operations	$ 4,800	$ 6,002
Amount capitalized in inventory		14
Total stock-based compensation	4,800	6,016
Cost of revenue [Member]
Stock-based compensation costs
Total employee stock-based compensation recognized in statement of operations	794	747
Research and development expense [Member]
Stock-based compensation costs
Total employee stock-based compensation recognized in statement of operations	1,724	1,836
Selling, general and administrative expense [Member]
Stock-based compensation costs
Total employee stock-based compensation recognized in statement of operations	$ 2,282	$ 3,419

XML

Fair Value (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Summary of available-for-sale securities
Amortized Cost	$ 87,366	$ 70,819
Gross Unrealized Gains	81	56
Gross Unrealized Losses	(7)	(21)
Total short-term investments	87,440	70,854
Certificates of deposit [Member]
Summary of available-for-sale securities
Amortized Cost	1,324
Gross Unrealized Gains	1
Total short-term investments	1,325
State, municipal and local government agencies bonds [Member]
Summary of available-for-sale securities
Amortized Cost	47,758	38,785
Gross Unrealized Gains	67	46
Gross Unrealized Losses		(6)
Total short-term investments	47,825	38,825
Corporate bonds [Member]
Summary of available-for-sale securities
Amortized Cost	22,208	18,613
Gross Unrealized Gains	12	6
Gross Unrealized Losses	(7)	(15)
Total short-term investments	22,213	18,604
U.S. federal government bonds [Member]
Summary of available-for-sale securities
Amortized Cost	5,895	9,226
Gross Unrealized Gains	1	4
Total short-term investments	5,896	9,230
Commercial paper [Member]
Summary of available-for-sale securities
Amortized Cost	10,181	4,195
Total short-term investments	$ 10,181	$ 4,195

XML

Restructuring and Excess Facilities (Tables)

3 Months Ended

Mar. 30, 2012

Restructuring and Excess Facilities [Abstract]

Activities in the restructuring accrual

The following table summarizes the activity in the restructuring accrual during the three months ended March 30, 2012:

	Excess Facilities
	(In thousands)
Balance at December 31, 2011	$	2,593
Provisions		—
Cash payments		(432	)
Balance at March 30, 2012	$	2,161

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Income Taxes (Details Textual) (USD $)	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Dec. 31, 2011
Income Taxes (Textual) [Abstract]
Income tax provision (benefit)	$ (607,000)	$ (618,000)
Federal statutory income tax rate	35.00%	35.00%
Gross unrecognized tax benefits including interest and penalties	52,600,000		52,500,000
Unrecognized tax benefits to be decreased in next 12 months due to statute of limitation expirations	2,800,000
Increase in interest and penalties related to uncertain tax positions	400,000
Liability for uncertain tax positions	$ 5,600,000
Foreign tax ruling expiration date	End of 2013

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Credit Facilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 30, 2012 Maximum [Member]	Mar. 30, 2012 Minimum [Member]
Credit Facilities (Additional Textual) [Abstract]
Percentage added to LIBOR to facilitate line of credit		1.99%	1.75%
Credit Facilities (Textual) [Abstract]
Credit Facility Collateral	Borrowings are not collateralized
Maximum borrowing capacity under bank line of credit facility	$ 10.0
Bank line of credit facility, maturity date	Aug. 25, 2012
Amounts outstanding under bank line of credit facility	0
Borrowings under bank line of credit facility	$ 0
Line of credit facility financial covenant terms	3.92 to 1
Interest rate	3.25%
Unrestricted cash, cash equivalents and short-term investments to current liabilities ratio	maintain unrestricted cash, accounts receivable and short-term investments to current liabilities of at least 1.75 to 1.00
Annualized rate of LIBOR	0.24%

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Goodwill and Identified Intangibles (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 212,417
Foreign currency translation adjustment	68
Balance at end of period	$ 212,485

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Net Income (Loss) Per Share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Numerators and denominators of the basic and diluted net income (loss) per share computations
Net income (loss) (numerator)	$ (7,528)	$ 516
Shares calculation (denominator):
Weighted average shares outstanding - basic	117,275	113,836
Effect of Dilutive Securities:
Potential common stock relating to stock options, restricted stock units and ESPP		2,273
Weighted average shares outstanding - diluted	117,275	116,109
Net income per share - basic	$ (0.06)	$ 0.00
Net income per share - diluted	$ (0.06)	$ 0.00

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Stock-Based Compensation (Details 1) (Employee Stock Option [Member])	3 Months Ended
	Mar. 30, 2012 Y	Apr. 01, 2011 Y
Employee Stock Option [Member]
Weighted average assumptions:
Expected term	4.70	4.75
Volatility	58.00%	54.00%
Risk-free interest rate	1.00%	2.10%
Expected dividends	0.00%	0.00%

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Acquisitions

3 Months Ended

Mar. 30, 2012

Acquisitions [Abstract]

ACQUISITIONS

NOTE 3: ACQUISITIONS

On September 15, 2010, Harmonic completed its acquisition of Omneon, Inc, at which time the holders of Omneon capital stock, including outstanding Omneon stock options and restricted stock units were entitled to receive aggregate consideration of approximately $194.0 million in cash and up to 17,128,176 shares of Harmonic common stock. To secure post-closing indemnification obligations of the holders of Omneon capital stock and vested and outstanding Omneon stock options and vested restricted stock units, Harmonic deposited into escrow an aggregate of approximately $21.0 million in cash and 1,926,920 shares of Harmonic common stock that would otherwise be issued to the holders of Omneon capital stock and vested and outstanding Omneon stock options and vested restricted stock units. In the first quarter of 2012, the Company submitted an indemnification claim for reimbursement from escrow and received reimbursement of $0.8 million, including $0.5 million of cash and 40,372 shares of common stock valued at $0.3 million. The cash is included in the balance sheet as of March 30, 2012, and the return of shares is reflected as a reduction in common stock and additional paid-in-capital. The reimbursement was for previously expensed legal and tax costs incurred by the Company following the date of acquisition. The indemnification period ended on March 15, 2012, and the cash and shares remaining in escrow were distributed to the holders of Omneon capital stock.

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Benefit Plans (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Share-based compensation arrangement by stock option and restricted stock unit activity
Beginning Balance, Shares Available for Grant	7,835
Beginning Balance, Stock Options Outstanding, Number of Shares	9,303
Beginning Balance, RSUs Outstanding, Number of Shares	3,713
Beginning Balance, Restricted Stock Units, Weighted Average Grant Date Fair Value	$ 7.52
Beginning Balance, Stock Options, Weighted Average Exercise Price	$ 7.12
Options Granted, Stock Options Outstanding	899
Option Granted, Shares Available for Grant	(3,835)
Stock Options, Granted, Weighted Average Exercise Price	$ 6.14
Restricted Stock Units, Granted, Number of Shares	1,957
Restricted Stock Units, Granted, Weighted Average Grant Date Fair Value	$ 6.10
Stock Options exercised, Number of Shares	(129)
Stock Options exercised, Weighted Average Exercise Price	$ 2.93
Restricted Stock Units, Shares released, Number of Shares	(649)
Restricted Stock Units, Shares released, Weighted Average Grant Date Fair Value	$ 8.29
Options Forfeited or cancelled, Shares Available for Grant	815
Stock Options Forfeited or cancelled, Number of Shares	(722)
Stock Options Forfeited or cancelled, Weighted Average Exercise Price	$ 9.28
Restricted Stock Units Forfeited or cancelled, Number of Shares	(273)
Restricted Stock Units Forfeited or cancelled, Weighted Average Grant Date Fair Value	$ 6.73
Ending Balance, Shares Available for Grant	4,815
Ending Balance, Stock Options, Number of Shares	9,351
Ending Balance, RSUs, Number of Shares	4,748
Ending Balance, Restricted Stock Units, Weighted Average Grant Date Fair Value	$ 6.77
Ending Balance, Stock Options, Weighted Average Exercise Price	$ 6.92

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 30, 2012

Commitments and Contingencies [Abstract]

Future minimum lease payments under noncancelable operating leases

Future minimum lease payments under noncancelable operating leases at March 30, 2012 are as follows:

	Total
	(In thousands)
2012 (remaining nine months)	$	4,755
2013		7,922
2014		6,595
2015		6,612
2016		6,807
Thereafter		26,681
	$	59,372

Summary of warranty accrual included in accrued liabilities

	Three months ended
	March 31, 2012			April 1, 2011
	(In thousands)
Balance at beginning of period	$	5,558		$	4,811
Accrual for current period warranties		1,619			2,262
Warranty costs incurred		(2,044	)		(1,810	)
Balance at end of period	$	5,133		$	5,263

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Net Income (Loss) Per Share (Tables)

3 Months Ended

Mar. 30, 2012

Net Income (Loss) Per Share [Abstract]

Antidilutive Securities

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Potentially dilutive equity awards outstanding		10,209		7,990

Numerators and denominators of the basic and diluted net income (loss) per share computations

Following is a reconciliation of the denominators of the basic and diluted net income (loss) per share computations:

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except per share amounts)
Net income (loss) (numerator)	$	(7,528	)	$	516
Shares calculation (denominator):
Weighted average shares outstanding—basic		117,275			113,836
Effect of Dilutive Securities:
Potential common stock relating to stock options, restricted stock units and ESPP		—			2,273
Weighted averages shares outstanding—diluted		117,275			116,109
Net income (loss) per share—basic	$	(0.06	)	$	0.00
Net income (loss) per share—diluted	$	(0.06	)	$	0.00

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Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Apr. 30, 2012	Apr. 01, 2012 Maximum [Member] M
Subsequent Events (Textual) [Abstract]
Authorized stock repurchase value	$ 25
Maximum period under stock repurchase program		18

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Benefit Plans (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2012 Y
Stock Options [Member]
Stock options outstanding
Stock options vested and expected-to-vest, Number of Shares	9,185
Stock Options vested and expected-to-vest, Weighted Average Exercise Price	$ 6.92
Stock Options vested and expected-to-vest, Weighted Average Remaining Contractual Term	3.8
Stock Options vested and expected-to-vest, Aggregate Intrinsic Value	$ 3,373
Stock Options Exercisable, Number of Shares	6,817
Stock Options Exercisable, Weighted Average Exercise Price	$ 7.13
Stock Options Exercisable, Weighted Average Remaining Contractual Term	2.9
Stock Options Exercisable, Aggregate Intrinsic Value	2,272
Restricted Stock [Member]
Stock options outstanding
Stock options vested and expected-to-vest, Number of Shares	4,376
Restricted Stock Units vested and expected-to-vest, Weighted Average Remaining Vesting Period	1.6
Restricted Stock Units vested and expected-to-vest, Aggregate Fair Value	$ 23,939

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Acquisitions (Details Textual) (Omneon [Member], USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Dec. 31, 2010	Sep. 15, 2010
Omneon [Member]
Acquisitions (Textual) [Abstract]
Purchase price paid as net of cash			$ 194.0
Number of common stocks paid as purchase price		17,128,176
Cash deposited to secure post closing indemnification obligations of holders			21.0
Number of common stocks deposited to secure post closing indemnification obligations of holders		1,926,920
Indemnification period end date	Mar. 15, 2012
Reimbursement amount received from escrow	0.8
Reimbursement amount received from escrow in cash	0.5
Reimbursement amount received from escrow in common stock, Shares	40,372
Reimbursement amount received from escrow common stock, Amount	$ 0.3

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Fair Value (Details) (Recurring Basis [Member], USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	$ 125,289	$ 133,358
Total liabilities measured and recorded at fair value	660	159
Money market funds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	37,680	62,131
Certificates of deposit [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	1,325
State, municipal and local government agencies bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	47,825	38,825
Corporate bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	22,213	18,604
U.S. federal government bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	5,896	9,230
Commercial paper [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	10,181	4,195
Foreign exchange forward contracts[Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	169	373
Total liabilities measured and recorded at fair value	660	159
Level 1 [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	43,576	71,361
Total liabilities measured and recorded at fair value	0	0
Level 1 [Member] | Money market funds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	37,680	62,131
Level 1 [Member] | Certificates of deposit [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0
Level 1 [Member] | State, municipal and local government agencies bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 1 [Member] | Corporate bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 1 [Member] | U.S. federal government bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	5,896	9,230
Level 1 [Member] | Commercial paper [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 1 [Member] | Foreign exchange forward contracts[Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	0	0
Level 2 [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	81,713	61,997
Total liabilities measured and recorded at fair value	660	159
Level 2 [Member] | Money market funds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 2 [Member] | Certificates of deposit [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	1,325
Level 2 [Member] | State, municipal and local government agencies bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	47,825	38,825
Level 2 [Member] | Corporate bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	22,213	18,604
Level 2 [Member] | U.S. federal government bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 2 [Member] | Commercial paper [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	10,181	4,195
Level 2 [Member] | Foreign exchange forward contracts[Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	169	373
Total liabilities measured and recorded at fair value	660	159
Level 3 [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	0	0
Level 3 [Member] | Money market funds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 3 [Member] | Certificates of deposit [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0
Level 3 [Member] | State, municipal and local government agencies bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 3 [Member] | Corporate bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 3 [Member] | U.S. federal government bonds [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 3 [Member] | Commercial paper [Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Level 3 [Member] | Foreign exchange forward contracts[Member]
Financial assets measured at fair value on a recurring basis
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	$ 0	$ 0

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Recent Accounting Pronouncements

3 Months Ended

Mar. 30, 2012

Recent Accounting Pronouncements [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS

NOTE 2: RECENT ACCOUNTING PRONOUNCEMENTS

In May 2011, the Financial Accounting Standards Board (“FASB”) issued additional guidance on fair value disclosures. This guidance contains certain updates to the measurement guidance, as well as enhanced disclosure requirements. The most significant change in disclosures is an expansion of the information required for Level 3 measurements, including enhanced disclosure for: (1) the valuation processes used by the reporting entity; and (2) the sensitivity of the fair value measurement to changes in unobservable inputs and the interrelationships between those unobservable inputs, if any. This guidance is effective for interim and annual periods beginning on or after December 15, 2011 and early adoption is prohibited. The Company adopted these reporting requirements in the first quarter of 2012. Adoption of these new reporting requirements did not have any impact on the Company because the Company does not hold any assets or liabilities for which fair value is based on Level 3 measurements.

In June 2011, the FASB issued guidance on the presentation of comprehensive income. This guidance requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The guidance eliminates the option to present the components of comprehensive income as part of the statement of changes in shareholders’ equity. In December 2011, the FASB issued guidance which indefinitely defers the effective date of the requirement to disclose on the face of the financial statements the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income. The guidance must be applied retrospectively, and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. The Company adopted this new guidance in the first quarter of 2012.

In September 2011, the FASB approved an accounting standard update intended to simplify how an entity tests goodwill for impairment. The amendment allows an entity to first assess qualitative factors to determine whether it is necessary to perform the two-step annual goodwill impairment test. An entity is required to perform step one only if the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. The Company will apply this guidance when it performs its annual goodwill impairment test in the fourth quarter of 2012.

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Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Maturities of short-term investments
Less than one year	$ 69,085	$ 43,470
Due in 1-2 years	18,355	27,384
Total short-term investments	$ 87,440	$ 70,854

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Restructuring and Excess Facilities (Details) (Excess Facilities [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Excess Facilities [Member]
Activities in the restructuring accrual
Balance at December 31, 2011	$ 2,593
Provisions	0
Cash payments	(432)
Balance at March 30, 2012	$ 2,161

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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012
Future minimum lease payments under noncancelable operating leases
2012 (remaining nine months)	$ 4,755
2013	7,922
2014	6,595
2015	6,612
2016	6,807
Thereafter	26,681
Total	$ 59,372

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Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 81,019	$ 90,983
Short-term investments	87,440	70,854
Accounts receivable, net	111,753	109,886
Inventories	65,545	70,649
Deferred income taxes	29,897	28,032
Prepaid expenses and other current assets	18,893	21,474
Total current assets	394,547	391,878
Property and equipment, net	40,439	40,469
Goodwill	212,485	212,417
Intangibles, net	80,111	87,651
Other assets	2,473	1,751
Total assets	730,055	734,166
Current liabilities:
Accounts payable	31,481	30,537
Income taxes payable	871	2,290
Deferred revenue	35,803	33,095
Accrued liabilities	39,050	46,896
Total current liabilities	107,205	112,818
Income taxes payable, long-term	47,809	47,307
Deferred income taxes, long-term	1,259	655
Other non-current liabilities	9,660	9,070
Total liabilities	165,933	169,850
Commitments and contingencies (Notes 13)
Stockholders' equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value, 150,000 shares authorized; 117,540 and 116,257 shares issued and outstanding at March 30, 2012 and December 31, 2011, respectively	118	116
Capital in excess of par value	2,440,158	2,433,164
Accumulated deficit	(1,875,617)	(1,868,089)
Accumulated other comprehensive loss	(537)	(875)
Total stockholders' equity	564,122	564,316
Total liabilities and stockholders' equity	$ 730,055	$ 734,166

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Benefit Plans (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 30, 2012
Benefit Plans (Textual) [Abstract]
Intrinsic value of options exercised	$ 0.4

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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Cash flows from operating activities:
Net income (loss)	$ (7,528)	$ 516
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of intangibles	7,539	7,371
Depreciation	3,798	3,403
Stock-based compensation	4,800	6,002
Net loss on disposal of fixed assets		61
Deferred income taxes	(1,262)	76
Provision for inventories	915	2,640
Allowance for doubtful accounts, returns and discounts	(684)	(510)
Other non-cash adjustments, net	(8)	121
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	(1,179)	(9,767)
Inventories	4,189	(3,372)
Prepaid expenses and other assets	1,892	998
Accounts payable	936	(3,616)
Deferred revenue	2,740	4,430
Income taxes payable	(929)	(6,748)
Accrued and other liabilities	(7,255)	(9,288)
Net cash provided by (used in) operating activities	7,964	(7,683)
Cash flows from investing activities:
Purchases of investments	(36,654)	(41,813)
Proceeds from maturities of investments	18,791	6,873
Proceeds from sales of investments	1,042	1,026
Acquisition of property and equipment	(3,715)	(4,957)
Net cash used in investing activities	(20,536)	(38,871)
Cash flows from financing activities:
Proceeds from issuance of common stock, net	2,479	9,570
Net cash provided by financing activities	2,479	9,570
Effect of exchange rate changes on cash and cash equivalents	129	123
Net decrease in cash and cash equivalents	(9,964)	(36,861)
Cash and cash equivalents at beginning of period	90,983	96,533
Cash and cash equivalents at end of period	$ 81,019	$ 59,672

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Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Accounts receivable
Accounts receivable	$ 119,320	$ 118,138
Less: allowances for doubtful accounts, returns and discounts	(7,567)	(8,252)
Accounts Receivable, Net, Current, Total	111,753	109,886
Inventories:
Raw materials	13,708	14,099
Work-in-process	3,354	4,250
Finished goods	48,483	52,300
Total inventories, net	65,545	70,649
Property and equipment:
Furniture and fixtures	6,681	6,706
Machinery and equipment	101,379	97,916
Leasehold improvements	7,459	7,079
Property, Plant and Equipment, Gross, Total	115,519	111,701
Less: accumulated depreciation and amortization	(75,080)	(71,232)
Property and equipment, net	$ 40,439	$ 40,469

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Fair Value (Tables)

3 Months Ended

Mar. 30, 2012

Fair Value [Abstract]

Financial assets measured at fair value on a recurring basis

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2012 and December 31, 2011, based on the three-tier fair value hierarchy:

	Total		Level 1		Level 2		Level 3
	(In thousands)
March 30, 2012
Assets
Money market funds	$	37,680	$	37,680	$	—	$	—
Certificate of deposit		1,325		—		1,325		—
State, municipal and local government agencies bonds		47,825		—		47,825		—
Corporate bonds		22,213		—		22,213		—
U.S. federal government bonds		5,896		5,896		—		—
Commercial paper		10,181		—		10,181		—
Foreign exchange forward contracts		169		—		169		—
Total assets measured and recorded at fair value	$	125,289	$	43,576	$	81,713	$	—
Liabilities
Foreign exchange forward contracts	$	660	$	—	$	660	$	—
Total liabilities measured and recorded at fair value	$	660	$	—	$	660	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
December 31, 2011
Assets
Money market funds	$	62,131	$	62,131	$	—	$	—
State, municipal and local government agencies bonds		38,825		—		38,825		—
Corporate bonds		18,604		—		18,604		—
U.S. federal government bonds		9,230		9,230		—		—
Commercial paper		4,195		—		4,195		—
Foreign exchange forward contracts		373		—		373		—
Total assets measured and recorded at fair value	$	133,358	$	71,361	$	61,997	$	—
Liabilities
Foreign exchange forward contracts	$	159	$	—	$	159	$	—
Total liabilities measured and recorded at fair value	$	159	$	—	$	159	$	—

Maturities of short-term investments

At March 30, 2012 and December 31, 2011, maturities of short-term investments are as follows:

	March 30, 2012		December 31, 2011
	(In thousands)
Short-term investments:
Less than one year	$	69,085	$	43,470
Due in 1—2 years		18,355		27,384
Total short-term investments	$	87,440	$	70,854

Summary of available-for-sale securities

The following is a summary of available-for-sale securities at March 30, 2012 and December 31, 2011:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(In thousands)
March 30, 2012
Certificate of deposit	$	1,324	$	1	$	—		$	1,325
State, municipal and local government agencies bonds		47,758		67		—			47,825
Corporate bonds		22,208		12		(7	)		22,213
U.S. federal government bonds		5,895		1		—			5,896
Commercial paper		10,181		—		—			10,181
Total	$	87,366	$	81	$	(7	)	$	87,440
December 31, 2011
State, municipal and local government agencies bonds	$	38,785	$	46	$	(6	)	$	38,825
Corporate bonds		18,613		6		(15	)		18,604
U.S. federal government bonds		9,226		4		—			9,230
Commercial paper		4,195		—		—			4,195
Total	$	70,819	$	56	$	(21	)	$	70,854

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Goodwill and Identified Intangibles (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Identifiable intangibles:
Gross Carrying Amount	$ 228,227	$ 228,227
Accumulated Amortization	(148,116)	(140,576)
Net Carrying Amount	80,111	87,651
Existing and core technology [Member]
Identifiable intangibles:
Gross Carrying Amount	136,145	136,145
Accumulated Amortization	(87,310)	(81,951)
Net Carrying Amount	48,835	54,194
Customer relationships/contracts [Member]
Identifiable intangibles:
Gross Carrying Amount	67,098	67,098
Accumulated Amortization	(43,649)	(42,142)
Net Carrying Amount	23,449	24,956
Trademarks and trade names [Member]
Identifiable intangibles:
Gross Carrying Amount	11,361	11,361
Accumulated Amortization	(8,060)	(7,700)
Net Carrying Amount	3,301	3,661
Supply agreements [Member]
Identifiable intangibles:
Gross Carrying Amount	3,414	3,414
Accumulated Amortization	(3,414)	(3,414)
Maintenance agreements and related relationships [Member]
Identifiable intangibles:
Gross Carrying Amount	7,100	7,100
Accumulated Amortization	(2,574)	(2,260)
Net Carrying Amount	4,526	4,840
Software license, intellectual property and assembled workforce [Member]
Identifiable intangibles:
Gross Carrying Amount	309	309
Accumulated Amortization	(309)	(309)
Order backlog [Member]
Identifiable intangibles:
Gross Carrying Amount	2,800	2,800
Accumulated Amortization	$ (2,800)	$ (2,800)

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Goodwill and Identified Intangibles (Tables)

3 Months Ended

Mar. 30, 2012

Goodwill and Identified Intangibles [Abstract]

Summary of goodwill and identifiable intangible assets

The following is a summary of identified intangible assets as of March 30, 2012 and December 31, 2011:

	March 30, 2012							December 31, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
						(In thousands)
Identifiable intangibles:
Existing and core technology	$	136,145	$	(87,310	)	$	48,835	$	136,145	$	(81,951	)	$	54,194
Customer relationships/contracts		67,098		(43,649	)		23,449		67,098		(42,142	)		24,956
Trademarks and tradenames		11,361		(8,060	)		3,301		11,361		(7,700	)		3,661
Supply agreements		3,414		(3,414	)		—		3,414		(3,414	)		—
Maintenance agreements and related relationships		7,100		(2,574	)		4,526		7,100		(2,260	)		4,840
Software license, intellectual property and assembled workforce		309		(309	)		—		309		(309	)		—
Order backlog		2,800		(2,800	)		—		2,800		(2,800	)		—
Total of identifiable intangibles	$	228,227	$	(148,116	)	$	80,111	$	228,227	$	(140,576	)	$	87,651

Changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill for the three months ended March 30, 2012 are as follows:

	(In thousands)
Balance at beginning of period	$	212,417
Foreign currency translation adjustment		68
Balance at end of period	$	212,485

Amortization expense for identifiable purchased intangible assets

Amortization expense for the identifiable purchased intangible assets for the three months ended March 30, 2012 and April 1, 2011 was allocated as follows:

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Included in cost of revenue	$	5,360	$	5,142
Included in operating expenses		2,179		2,229
Total amortization expense	$	7,539	$	7,371

Estimated future amortization expense of purchased intangible assets

The estimated future amortization expense of purchased intangible assets with definite lives is as follows:

	Cost of Revenue		Operating Expenses		Total
	(In thousands)
Years ending December 31,
2012 (remaining 9 months)	$	15,144	$	6,525	$	21,669
2013		19,232		8,096		27,328
2014		13,745		6,775		20,520
2015		714		5,783		6,497
2016		—		4,097		4,097
Total	$	48,835	$	31,276	$	80,111

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Basis of Presentation and Significant Accounting Policies

3 Months Ended

Mar. 30, 2012

Basis of Presentation and Significant Accounting Policies [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

NOTE 1: BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation. The accompanying unaudited condensed consolidated financial statements include all adjustments (consisting only of normal recurring adjustments) which Harmonic Inc. (“Harmonic,” or the “Company”) considers necessary for a fair statement of the results of operations for the interim periods covered and the consolidated financial condition of the Company at the date of the balance sheets. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on February 29, 2012 (“2011 Form 10-K”). The interim results presented herein are not necessarily indicative of the results of operations that may be expected for the full fiscal year ending December 31, 2012, or any other future period. The Company’s fiscal quarters are based on 13-week periods, except for the fourth quarter which ends on December 31.

The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The year-end condensed balance sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“US GAAP”).

Use of Estimates. The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Significant Accounting Policies. The Company’s significant accounting policies are described in Note 1 to its audited Consolidated Financial Statements included in its 2011 Form 10-K. There have been no significant changes to these policies during the three months ended March 30, 2012.

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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	117,540	116,257
Common stock, shares outstanding	117,540	116,257

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Income Taxes

3 Months Ended

Mar. 30, 2012

Income Taxes [Abstract]

INCOME TAXES

NOTE 11: INCOME TAXES

The income tax provision includes U.S. federal, state and local, and foreign income taxes and is based on the application of a forecasted annual income tax rate applied to the current quarter’s year-to-date pre-tax income (loss). In determining the estimated annual effective income tax rate, the Company analyzes various factors, including projections of the Company’s annual earnings, taxing jurisdictions in which the earnings will be generated, the impact of state and local income taxes, the Company’s ability to use tax credits and net operating loss carryforwards, and available tax planning alternatives. Discrete items, including the effect of changes in tax laws, tax rates, and certain circumstances with respect to valuation allowances or other unusual or non-recurring tax adjustments are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than being included in the estimated annual effective income tax rate.

For the three months ended March 30, 2012, the Company recorded a benefit from income taxes of $0.6 million, compared to a benefit of $0.6 million for the same period a year ago, inclusive of discrete items.

For the three months ended March 30, 2012, the difference between the recorded benefit from income taxes and the tax provision, based on the federal statutory rate of 35%, was primarily attributable to the differential in foreign tax rates, non-deductible stock-based compensation expense and non-deductible amortization on foreign intangibles. The discrete items recorded in the first quarter of 2012 principally related to accrued interest on uncertain tax positions and foreign currency translation adjustments.

For the three months ended April 1, 2011, the difference between the recorded benefit from income taxes and the tax provision, based on the federal statutory rate of 35%, was primarily attributable to various discrete items, the differential in foreign tax rates, non-deductible stock-based compensation expense, non-deductible amortization on foreign intangibles, and federal research and development credits. The discrete items recorded in the first quarter of 2011 principally related to foreign currency translation adjustments, accrued interest on uncertain tax positions and a benefit associated with the reversal of previously provided foreign income taxes due to statute of limitation expirations.

In compliance with applicable guidance for accounting for uncertainty in income taxes, the Company had gross unrecognized tax benefits, which include interest and penalties, of approximately $52.5 million as of December 31, 2011, and approximately $52.6 million as of March 30, 2012. If all of these unrecognized tax benefits were recognized, the entire amount would impact the provision for income taxes. We anticipate the unrecognized tax benefits to decrease by $2.8 million in the 12 months beginning March 31, 2012, due to statute of limitation expirations, except to the extent the IRS may challenge the Company’s position with respect to such benefits.

The Company recognizes interest and possible penalties related to uncertain tax positions in income tax expense. During the three months ended March 30, 2012, the Company recorded a net increase of $0.4 million for interest and possible penalties related to uncertain tax positions, resulting in a balance at March 30, 2012 of $5.6 million.

The Company files U.S., state, and foreign income tax returns in jurisdictions with varying statute of limitations periods, during which such tax returns may be audited and adjusted by the relevant tax authorities. The Company’s 2008 through 2011 tax years generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the Company’s 2005 through 2011 tax years generally remain subject to examination by their respective tax authorities. A subsidiary of the Company is under audit by the Israel tax authority for the years 2007 through 2010. The Company is currently under audit by the US Internal Revenue Service for the 2007, 2008 and 2009 tax years. In addition, the statute of limitations on our 2007 and 2008 U.S. corporate income tax return has been extended to 2013.

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Document and Entity Information	3 Months Ended
	Mar. 30, 2012	Apr. 23, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	HARMONIC INC
Entity Central Index Key	0000851310
Document Type	10-Q
Document Period End Date	Mar. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		117,573,225

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Net Income (Loss) Per Share

3 Months Ended

Mar. 30, 2012

Net Income (Loss) Per Share [Abstract]

NET INCOME (LOSS) PER SHARE

NOTE 12: NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed by dividing the net income (loss) attributable to common stockholders for the period by the weighted average number of common shares outstanding during the period. The following table shows the potentially dilutive shares, consisting of options, restricted stock units and ESPP shares, for the periods presented, that were excluded from the net income computations because their effect was antidilutive:

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Potentially dilutive equity awards outstanding		10,209		7,990

Following is a reconciliation of the denominators of the basic and diluted net income (loss) per share computations:

	Three months ended
	March 30, 2012			April 1, 2011
	(In thousands, except per share amounts)
Net income (loss) (numerator)	$	(7,528	)	$	516
Shares calculation (denominator):
Weighted average shares outstanding—basic		117,275			113,836
Effect of Dilutive Securities:
Potential common stock relating to stock options, restricted stock units and ESPP		—			2,273
Weighted averages shares outstanding—diluted		117,275			116,109
Net income (loss) per share—basic	$	(0.06	)	$	0.00
Net income (loss) per share—diluted	$	(0.06	)	$	0.00

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Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Condensed Consolidated Statements of Operations [Abstract]
Product revenue	$ 110,367	$ 115,867
Service revenue	17,354	16,968
Net revenue	127,721	132,835
Product cost of revenue	66,936	64,751
Service cost of revenue	7,123	6,229
Total cost of revenue	74,059	70,980
Gross profit	53,662	61,855
Operating expenses:
Research and development	27,829	26,149
Selling, general and administrative	32,311	33,564
Amortization of intangibles	2,179	2,229
Total operating expenses	62,319	61,942
Loss from operations	(8,657)	(87)
Interest income, net	119	92
Other income (expense), net	403	(107)
Loss before income taxes	(8,135)	(102)
Benefit from income taxes	(607)	(618)
Net income (loss)	$ (7,528)	$ 516
Net income (loss) per share:
Basic	$ (0.06)	$ 0.00
Diluted	$ (0.06)	$ 0.00
Weighted average shares:
Basic	117,275	113,836
Diluted	117,275	116,109

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Goodwill and Identified Intangibles

3 Months Ended

Mar. 30, 2012

Goodwill and Identified Intangibles [Abstract]

GOODWILL AND IDENTIFIED INTANGIBLES

NOTE 6: GOODWILL AND IDENTIFIED INTANGIBLES

The following is a summary of identified intangible assets as of March 30, 2012 and December 31, 2011:

	March 30, 2012							December 31, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
						(In thousands)
Identifiable intangibles:
Existing and core technology	$	136,145	$	(87,310	)	$	48,835	$	136,145	$	(81,951	)	$	54,194
Customer relationships/contracts		67,098		(43,649	)		23,449		67,098		(42,142	)		24,956
Trademarks and tradenames		11,361		(8,060	)		3,301		11,361		(7,700	)		3,661
Supply agreements		3,414		(3,414	)		—		3,414		(3,414	)		—
Maintenance agreements and related relationships		7,100		(2,574	)		4,526		7,100		(2,260	)		4,840
Software license, intellectual property and assembled workforce		309		(309	)		—		309		(309	)		—
Order backlog		2,800		(2,800	)		—		2,800		(2,800	)		—
Total of identifiable intangibles	$	228,227	$	(148,116	)	$	80,111	$	228,227	$	(140,576	)	$	87,651

The changes in the carrying amount of goodwill for the three months ended March 30, 2012 are as follows:

	(In thousands)
Balance at beginning of period	$	212,417
Foreign currency translation adjustment		68
Balance at end of period	$	212,485

Amortization expense for the identifiable purchased intangible assets for the three months ended March 30, 2012 and April 1, 2011 was allocated as follows:

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Included in cost of revenue	$	5,360	$	5,142
Included in operating expenses		2,179		2,229
Total amortization expense	$	7,539	$	7,371

The estimated future amortization expense of purchased intangible assets with definite lives is as follows:

	Cost of Revenue		Operating Expenses		Total
	(In thousands)
Years ending December 31,
2012 (remaining 9 months)	$	15,144	$	6,525	$	21,669
2013		19,232		8,096		27,328
2014		13,745		6,775		20,520
2015		714		5,783		6,497
2016		—		4,097		4,097
Total	$	48,835	$	31,276	$	80,111

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Balance Sheet

3 Months Ended

Mar. 30, 2012

Balance Sheet [Abstract]

BALANCE SHEET

NOTE 5: BALANCE SHEET

	March 30, 2012			December 31, 2011
	(In thousands)
Accounts receivable
Accounts receivable	$	119,320		$	118,138
Less: allowances for doubtful accounts , returns and discounts		(7,567	)		(8,252	)
	$	111,753		$	109,886
Inventories:
Raw materials	$	13,708		$	14,099
Work-in-process		3,354			4,250
Finished goods		48,483			52,300
	$	65,545		$	70,649
Property and equipment:
Furniture and fixtures	$	6,681		$	6,706
Machinery and equipment		101,379			97,916
Leasehold improvements		7,459			7,079
		115,519			111,701
Less: accumulated depreciation and amortization		(75,080	)		(71,232	)
	$	40,439		$	40,469

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Balance Sheet (Tables)

3 Months Ended

Mar. 30, 2012

Balance Sheet [Abstract]

Accounts receivable

	March 30, 2012			December 31, 2011
	(In thousands)
Accounts receivable
Accounts receivable	$	119,320		$	118,138
Less: allowances for doubtful accounts , returns and discounts		(7,567	)		(8,252	)
	$	111,753		$	109,886

Inventories

Inventories:
Raw materials	$	13,708	$	14,099
Work-in-process		3,354		4,250
Finished goods		48,483		52,300
	$	65,545	$	70,649

Property and equipment:

Property and equipment:
Furniture and fixtures	$	6,681		$	6,706
Machinery and equipment		101,379			97,916
Leasehold improvements		7,459			7,079
		115,519			111,701
Less: accumulated depreciation and amortization		(75,080	)		(71,232	)
	$	40,439		$	40,469

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Commitments and Contingencies

3 Months Ended

Mar. 30, 2012

Commitments and Contingencies [Abstract]

COMMITMENTS AND CONTINGENCIES

NOTE 13: COMMITMENTS AND CONTINGENCIES

Leases.

Future minimum lease payments under noncancelable operating leases at March 30, 2012 are as follows:

	Total
	(In thousands)
2012 (remaining nine months)	$	4,755
2013		7,922
2014		6,595
2015		6,612
2016		6,807
Thereafter		26,681
	$	59,372

Warranties. The Company accrues for estimated warranty costs at the time of product shipment. Management periodically reviews the estimated fair value of its warranty liability and records adjustments based on the terms of warranties provided to customers, historical and anticipated warranty claims experience, and estimates of the timing and cost of warranty claims. Activity for the Company’s warranty accrual, which is included in accrued liabilities, is summarized below:

	Three months ended
	March 31, 2012			April 1, 2011
	(In thousands)
Balance at beginning of period	$	5,558		$	4,811
Accrual for current period warranties		1,619			2,262
Warranty costs incurred		(2,044	)		(1,810	)
Balance at end of period	$	5,133		$	5,263

Purchase Commitments with Contract Manufacturers and Suppliers. The Company relies on a limited number of contract manufacturers and suppliers to provide manufacturing services for a substantial majority of its products. In addition, some components, sub-assemblies and modules are obtained from a sole supplier or limited group of suppliers. During the normal course of business, in order to reduce manufacturing lead times and ensure adequate component supply, the Company enters into agreements with certain contract manufacturers and suppliers that allow them to procure inventory based upon criteria as defined by the Company. The Company had approximately $24 million of non-cancelable purchase commitments as of March 30, 2012.

Standby Letters of Credit. As of March 30, 2012, the Company’s financial guarantees consisted of standby letters of credit outstanding, which were principally related to performance bonds and state requirements imposed on employers. The maximum amount of potential future payments under these arrangements was $1.1 million.

Indemnification. Harmonic is obligated to indemnify its officers and the members of its Board of Directors pursuant to its bylaws and contractual indemnity agreements. Harmonic also indemnifies some of its suppliers and most of its customers for specified intellectual property matters pursuant to certain contractual arrangements, subject to certain limitations. The scope of these indemnities varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorneys’ fees). There have been no amounts accrued in respect of these indemnification provisions through March 30, 2012.

Guarantees. At March 30, 2012, Harmonic had no other guarantees outstanding.

Legal proceedings.

In October 2011, Avid Technology, Inc. filed a complaint in the United States District Court for the District of Delaware alleging that Harmonic’s Omneon Media Grid product infringes two patents held by Avid. The complaint seeks injunctive relief and damages. At this time, the Company cannot predict the outcome of this matter. An unfavorable outcome of this matter could adversely affect the Company’s business, operating results, financial position and cash flows.

In March 2010, Interkey ELC Ltd, or Interkey, filed a lawsuit in Israel, alleging breach of contract against Harmonic and Scopus Video Networks Ltd. (now Harmonic Video Networks Ltd. or “HVN”), which was acquired by Harmonic in March 2009. The plaintiffs are seeking damages in the amount of 6,300,000 ILS (approximately $1.7 million). Although, as is the case with all litigation, no assurances can be given as to the outcome of the Interkey lawsuit, we believe Interkey’s and its shareholders’ claims are without merit and Harmonic and HVN intend to vigorously defend themselves against these claims. Based on the foregoing, as of March 30, 2012 and as of the date these financial statements were issued, we do not currently believe a loss is probable and have therefore not recorded a provision for this claim.

An unfavorable outcome on the above referenced matters or any other litigation matters could require that Harmonic pay substantial damages, or, in connection with any intellectual property infringement claims, could require that the Company pay ongoing royalty payments or could prevent the Company from selling certain of its products. As a result, a settlement of, or an unfavorable outcome on, any of the above referenced or other litigation matters could have a material adverse effect on Harmonic’s business, operating results, financial position and cash flows.

Harmonic’s industry is characterized by the existence of a large number of patents and frequent claims and related litigation regarding patent and other intellectual property rights. From time to time, third parties have asserted, and may in the future assert, exclusive patent, copyright, trademark and other intellectual property rights against us or the Company’s customers. Such assertions arise in the normal course of the Company’s operations. The resolution of any such assertions and claims cannot be predicted with certainty.

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Benefit Plans

3 Months Ended

Mar. 30, 2012

Benefit Plans [Abstract]

BENEFIT PLANS

NOTE 9: BENEFIT PLANS

Harmonic grants stock options and restricted stock units (“RSUs”) pursuant to stockholder approved equity incentive plans. These equity incentive plans are described in further detail in Note 13. Benefit Plans, of Notes to Consolidated Financial Statements in the 2011 Form 10-K.

Stock Options and RSUs

The following table summarizes the Company’s stock option and restricted stock unit activity during the three months ended March 30, 2012 (in thousands, except per share amounts):

				Stock Options Outstanding					Restricted Stock Units Outstanding
	Shares Available for Grant			Number of Shares			Weighted Average Exercise Price		Number of Units			Weighted Average Grant Date Fair Value
Balance at December 31, 2011		7,835			9,303		$	7.12		3,713		$	7.52
Granted		(3,835	)		899		$	6.14		1,957		$	6.10
Options exercised		—			(129	)	$	2.93		—		$	—
Shares released		—			—		$	—		(649	)	$	8.29
Forfeited or cancelled		815			(722	)	$	9.28		(273	)	$	6.73
Balance at March 30, 2012		4,815			9,351		$	6.92		4,748		$	6.77

The following table summarizes information about stock options outstanding as of March 30, 2012 (in thousands, except per share amounts and term):

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Vested and expected to vest		9,185	$	6.92		3.8	$	3,373
Exercisable		6,817	$	7.13		2.9	$	2,272

The intrinsic value of options vested and expected to vest and exercisable as of March 30, 2012 is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of March 30, 2012. The intrinsic value of options exercised during the three months ended March 30, 2012 was $0.4 million and is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the exercise date.

The following table summarizes information about restricted stock units outstanding as of March 30, 2012 (in thousands, except term):

	Number of Shares Underlying Restricted Stock Units		Weighted Average Remaining Vesting Period (Years)		Aggregate Fair Value
Vested and expected to vest		4,376		1.6	$	23,939

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Restructuring and Excess Facilities

3 Months Ended

Mar. 30, 2012

Restructuring and Excess Facilities [Abstract]

RESTRUCTURING AND EXCESS FACILITIES

NOTE 7: RESTRUCTURING AND EXCESS FACILITIES

In the fourth quarter of 2010, the Company recorded an excess facilities expense of $3.0 million in selling, general and administrative expenses related to the closure of the Omneon headquarters in Sunnyvale, California. The charge was based on future rent payments, net of expected sublease income, to be made through the end of the lease term in June 2013. In the first quarter of 2011, the Company recorded an additional expense of $0.5 million in selling, general and administrative expenses related to changes in expected sublease income for this property. Harmonic reassesses this liability quarterly and adjusts it, as necessary, based on changes in the timing and amounts of expected sublease rental income.

As of March 30, 2012, accrued excess facilities costs totaled $2.2 million, of which $1.7 million was included in current accrued liabilities.

The following table summarizes the activity in the restructuring accrual during the three months ended March 30, 2012:

	Excess Facilities
	(In thousands)
Balance at December 31, 2011	$	2,593
Provisions		—
Cash payments		(432	)
Balance at March 30, 2012	$	2,161

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Credit Facilities

3 Months Ended

Mar. 30, 2012

Credit Facilities [Abstract]

CREDIT FACILITIES

NOTE 8: CREDIT FACILITIES

Harmonic has a bank line of credit facility with Silicon Valley Bank, which provides for borrowings of up to $10.0 million and matures on August 25, 2012. As of March 30, 2012, other than standby letters of credit and guarantees (Note 13), there were no amounts outstanding under the line of credit facility and there were no borrowings during the three months ended March 30, 2012. This facility, which became effective in August 2011, contains a financial covenant that requires Harmonic to maintain a ratio of unrestricted cash, accounts receivable and short term investments to current liabilities (less deferred revenue) of at least 1.75 to 1.00. As of March 30, 2012, the Company’s ratio under that covenant was 3.92 to 1. In the event of noncompliance by Harmonic with the covenants under the facility, including the financial covenant referenced above, Silicon Valley Bank would be entitled to exercise its remedies under the facility, including declaring all obligations immediately due and payable. At March 30, 2012, Harmonic was in compliance with the covenants under the line of credit facility. Borrowings pursuant to the line would bear interest at the bank’s prime rate (3.25% at March 30, 2012) or at LIBOR for the desired borrowing period (an annualized rate of 0.24% for a one month borrowing period at March 30, 2012) plus 1.75%, or 1.99%. Borrowings are not collateralized.

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Stock-Based Compensation

3 Months Ended

Mar. 30, 2012

Stock-Based Compensation [Abstract]

STOCK-BASED COMPENSATION

NOTE 10: STOCK-BASED COMPENSATION

The following table summarizes stock-based compensation costs in our Statements of Operations for the three months ended March 30, 2012 and April 1, 2011 (in thousands):

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Cost of revenue	$	794	$	747
Research and development expense		1,724		1,836
Selling, general and administrative expense		2,282		3,419
Total employee stock-based compensation recognized in statement of operations		4,800		6,002
Amount capitalized in inventory		—		14
Total stock-based compensation	$	4,800	$	6,016

Stock Options

The Company estimated the fair value of all employee stock options using a Black-Scholes valuation model with the following weighted average assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		4.70			4.75
Volatility		58	%		54	%
Risk-free interest rate		1.0	%		2.1	%
Expected dividends		0.0	%		0.0	%

Expected term. The expected term represents the weighted-average period that the stock options are expected to remain outstanding. Our computation of expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior.

Volatility. The Company uses its historical volatility for a period equivalent to the expected term of the options to estimate the expected volatility.

Risk-free interest rate. The risk-free interest rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.

Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods. The Company’s estimated forfeiture rate was 6% and 5% for the three months ended March 30, 2012 and April 1, 2011, respectively.

The weighted-average fair value of options granted for the three months ended March 30, 2012 and April 1, 2011 was $2.94 and $4.55 per share, respectively.

The fair value of all stock options vested during the three months ended March 30, 2012 was $ 2.1 million.

Restricted Stock Units

The fair value of RSUs is equal to the fair value of the Company’s common stock on the date of grant.

The fair value of all restricted stock units issued during the three months ended March 30, 2012 was $ 5.4 million.

Employee Stock Purchase Plan

The value of the stock purchase rights under the Company’s Employee Stock Purchase Plan (“ESPP”) consists of: (1) the 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		0.5			0.5
Volatility		53	%		54	%
Risk-free interest rate		0.2	%		0.3	%
Expected dividends		0.0	%		0.0	%

Expected term. The expected term represents the period of time from the beginning of the offering period to the purchase date.

Volatility. The Company uses its historical volatility for a period equivalent to the expected term of the options to estimate the expected volatility.

Risk-free interest rate. The risk-free interest rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.

Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

The weighted-average fair value of stock purchase rights granted under the ESPP for the three months ended March 30, 2012 and April 1, 2011 was $ 1.50 and $2.58 per share, respectively.

Unrecognized Stock-Based Compensation

As of March 30, 2012, total unamortized stock-based compensation cost related to unvested stock options and restricted stock units was $39.1 million. This amount will be recognized as expense using the straight-line attribution method over the remaining weighted-average amortization period of 2.8 years.

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Fair Value (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012 Securities
Fair Value (Textual) [Abstract]
Nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition	$ 0
Individual available for sale securities in a material unrealized loss position	0

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Net Income (Loss) Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Antidilutive Securities
Potentially dilutive equity awards outstanding	10,209	7,990

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Basis of Presentation and Significant Accounting Policies (Policies)

3 Months Ended

Mar. 30, 2012

Basis of Presentation and Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation. The accompanying unaudited condensed consolidated financial statements include all adjustments (consisting only of normal recurring adjustments) which Harmonic Inc. (“Harmonic,” or the “Company”) considers necessary for a fair statement of the results of operations for the interim periods covered and the consolidated financial condition of the Company at the date of the balance sheets. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on February 29, 2012 (“2011 Form 10-K”). The interim results presented herein are not necessarily indicative of the results of operations that may be expected for the full fiscal year ending December 31, 2012, or any other future period. The Company’s fiscal quarters are based on 13-week periods, except for the fourth quarter which ends on December 31.

The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The year-end condensed balance sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“US GAAP”).

Use of Estimates

Use of Estimates. The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Significant Accounting Policies

Significant Accounting Policies. The Company’s significant accounting policies are described in Note 1 to its audited Consolidated Financial Statements included in its 2011 Form 10-K. There have been no significant changes to these policies during the three months ended March 30, 2012.

Fair value measurements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued additional guidance on fair value disclosures. This guidance contains certain updates to the measurement guidance, as well as enhanced disclosure requirements. The most significant change in disclosures is an expansion of the information required for Level 3 measurements, including enhanced disclosure for: (1) the valuation processes used by the reporting entity; and (2) the sensitivity of the fair value measurement to changes in unobservable inputs and the interrelationships between those unobservable inputs, if any. This guidance is effective for interim and annual periods beginning on or after December 15, 2011 and early adoption is prohibited. The Company adopted these reporting requirements in the first quarter of 2012. Adoption of these new reporting requirements did not have any impact on the Company because the Company does not hold any assets or liabilities for which fair value is based on Level 3 measurements.

Presentation of comprehensive income

In June 2011, the FASB issued guidance on the presentation of comprehensive income. This guidance requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The guidance eliminates the option to present the components of comprehensive income as part of the statement of changes in shareholders’ equity. In December 2011, the FASB issued guidance which indefinitely defers the effective date of the requirement to disclose on the face of the financial statements the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income. The guidance must be applied retrospectively, and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. The Company adopted this new guidance in the first quarter of 2012.

Goodwill for impairment

In September 2011, the FASB approved an accounting standard update intended to simplify how an entity tests goodwill for impairment. The amendment allows an entity to first assess qualitative factors to determine whether it is necessary to perform the two-step annual goodwill impairment test. An entity is required to perform step one only if the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. The Company will apply this guidance when it performs its annual goodwill impairment test in the fourth quarter of 2012.

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Benefit Plans (Tables)

3 Months Ended

Mar. 30, 2012

Benefit Plans [Abstract]

Summary of stock option and restricted stock unit activity

The following table summarizes the Company’s stock option and restricted stock unit activity during the three months ended March 30, 2012 (in thousands, except per share amounts):

				Stock Options Outstanding					Restricted Stock Units Outstanding
	Shares Available for Grant			Number of Shares			Weighted Average Exercise Price		Number of Units			Weighted Average Grant Date Fair Value
Balance at December 31, 2011		7,835			9,303		$	7.12		3,713		$	7.52
Granted		(3,835	)		899		$	6.14		1,957		$	6.10
Options exercised		—			(129	)	$	2.93		—		$	—
Shares released		—			—		$	—		(649	)	$	8.29
Forfeited or cancelled		815			(722	)	$	9.28		(273	)	$	6.73
Balance at March 30, 2012		4,815			9,351		$	6.92		4,748		$	6.77

Summary of stock options and restricted stock units, vested and expected to vest, exercisable

The following table summarizes information about stock options outstanding as of March 30, 2012 (in thousands, except per share amounts and term):

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Vested and expected to vest		9,185	$	6.92		3.8	$	3,373
Exercisable		6,817	$	7.13		2.9	$	2,272

The following table summarizes information about restricted stock units outstanding as of March 30, 2012 (in thousands, except term):

	Number of Shares Underlying Restricted Stock Units		Weighted Average Remaining Vesting Period (Years)		Aggregate Fair Value
Vested and expected to vest		4,376		1.6	$	23,939

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Stock-Based Compensation (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012 Y	Apr. 01, 2011
Stock-Based Compensation (Textual) [Abstract]
Weighted-average fair value other than option granted	$ 6.10
Stock-Based Compensation (Additional) (Textual) [Abstract]
Estimate forfeiture rate, share based compensation arrangement	0.06	0.05
Weighted-average fair value of options granted	$ 2.94	$ 4.55
Fair value of options vested	$ 2.1
Issuance of restricted stock, fair value	5.4
Total unamortized stock-based compensation cost related to unvested stock options and restricted stock units	$ 39.1
Remaining weighted-average amortization period	2.8
Employee Stock Purchase Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Weighted-average fair value other than option granted	$ 1.50	$ 2.58
Discount percentage on purchase of stock	15.00%
Value of stock purchase right percentage of call option	85.00%
Value of stock purchase right percentage of put option	15.00%

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Restructuring and Excess Facilities (Details Textual) (USD $)	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Apr. 01, 2011 Facilities charge [Member]	Dec. 31, 2010 Selling, general and administrative expenses [Member]
Restructuring and Excess Facilities (Textual) [Abstract]
Excess facilities expense				$ 3,000,000
Expected sublease income	32,311,000	33,564,000	500,000
Additional Restructuring and Excess Facilities (Textual) [Abstract]
Accrued excess facilities cost	2,200,000
Accrued excess facilities cost current portion	$ 1,700,000

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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (7,528)	$ 516
Change in unrealized loss on investments, net	24	(11)
Foreign currency translation	314	454
Total comprehensive income (loss)	$ (7,190)	$ 959

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Fair Value

3 Months Ended

Mar. 30, 2012

Fair Value [Abstract]

FAIR VALUE

NOTE 4: FAIR VALUE

The applicable accounting guidance establishes a framework for measuring fair value and required disclosure about the fair value measurements of assets and liabilities. This guidance requires the Company to classify and disclose assets and liabilities measured at fair value on a recurring basis, as well as fair value measurements of assets and liabilities measured on a nonrecurring basis in periods subsequent to initial measurement, in a three-tier fair value hierarchy as described below.

The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants on the measurement date.

Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The guidance describes three levels of inputs that may be used to measure fair value:

• Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

• Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. The Company primarily uses broker quotes for valuation of its short-term investments. Forward exchange contracts are classified as Level 2 because they are valued using quoted market prices and other observable data for similar instruments in an active market.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The Company uses the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. During the three months ended March 30, 2012, there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2012 and December 31, 2011, based on the three-tier fair value hierarchy:

	Total		Level 1		Level 2		Level 3
	(In thousands)
March 30, 2012
Assets
Money market funds	$	37,680	$	37,680	$	—	$	—
Certificate of deposit		1,325		—		1,325		—
State, municipal and local government agencies bonds		47,825		—		47,825		—
Corporate bonds		22,213		—		22,213		—
U.S. federal government bonds		5,896		5,896		—		—
Commercial paper		10,181		—		10,181		—
Foreign exchange forward contracts		169		—		169		—
Total assets measured and recorded at fair value	$	125,289	$	43,576	$	81,713	$	—
Liabilities
Foreign exchange forward contracts	$	660	$	—	$	660	$	—
Total liabilities measured and recorded at fair value	$	660	$	—	$	660	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
December 31, 2011
Assets
Money market funds	$	62,131	$	62,131	$	—	$	—
State, municipal and local government agencies bonds		38,825		—		38,825		—
Corporate bonds		18,604		—		18,604		—
U.S. federal government bonds		9,230		9,230		—		—
Commercial paper		4,195		—		4,195		—
Foreign exchange forward contracts		373		—		373		—
Total assets measured and recorded at fair value	$	133,358	$	71,361	$	61,997	$	—
Liabilities
Foreign exchange forward contracts	$	159	$	—	$	159	$	—
Total liabilities measured and recorded at fair value	$	159	$	—	$	159	$	—

At March 30, 2012 and December 31, 2011, maturities of short-term investments are as follows:

	March 30, 2012		December 31, 2011
	(In thousands)
Short-term investments:
Less than one year	$	69,085	$	43,470
Due in 1—2 years		18,355		27,384
Total short-term investments	$	87,440	$	70,854

The following is a summary of available-for-sale securities at March 30, 2012 and December 31, 2011:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(In thousands)
March 30, 2012
Certificate of deposit	$	1,324	$	1	$	—		$	1,325
State, municipal and local government agencies bonds		47,758		67		—			47,825
Corporate bonds		22,208		12		(7	)		22,213
U.S. federal government bonds		5,895		1		—			5,896
Commercial paper		10,181		—		—			10,181
Total	$	87,366	$	81	$	(7	)	$	87,440
December 31, 2011
State, municipal and local government agencies bonds	$	38,785	$	46	$	(6	)	$	38,825
Corporate bonds		18,613		6		(15	)		18,604
U.S. federal government bonds		9,226		4		—			9,230
Commercial paper		4,195		—		—			4,195
Total	$	70,819	$	56	$	(21	)	$	70,854

Impairment of Investments

Harmonic monitors its investment portfolio for impairment on a periodic basis. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. A decline of fair value below amortized costs of debt securities is considered other-than temporary if the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis. At the present time, the Company does not intend to sell its investments that have unrealized losses in accumulated other comprehensive loss. In addition, the Company does not believe that it is more likely than not that it will be required to sell its investments that have unrealized losses in accumulated other comprehensive loss before the Company recovers the principal amounts invested. The Company believes that the unrealized losses are temporary and do not require an other-than-temporary impairment, based on its evaluation of available evidence as of March 30, 2012.

As of March 30, 2012, there were no individual available-for-sale securities in a material unrealized loss position and the amount of unrealized losses on the total investment balance was insignificant.

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2012

Stock-Based Compensation [Abstract]

Stock-based compensation costs

The following table summarizes stock-based compensation costs in our Statements of Operations for the three months ended March 30, 2012 and April 1, 2011 (in thousands):

	Three months ended
	March 30, 2012		April 1, 2011
	(In thousands)
Cost of revenue	$	794	$	747
Research and development expense		1,724		1,836
Selling, general and administrative expense		2,282		3,419
Total employee stock-based compensation recognized in statement of operations		4,800		6,002
Amount capitalized in inventory		—		14
Total stock-based compensation	$	4,800	$	6,016

Weighted average assumptions of fair value options

The Company estimated the fair value of all employee stock options using a Black-Scholes valuation model with the following weighted average assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		4.70			4.75
Volatility		58	%		54	%
Risk-free interest rate		1.0	%		2.1	%
Expected dividends		0.0	%		0.0	%

The value of the stock purchase rights under the Company’s Employee Stock Purchase Plan (“ESPP”) consists of: (1) the 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:

	Three months ended
	March 30, 2012			April 1, 2011
Expected term		0.5			0.5
Volatility		53	%		54	%
Risk-free interest rate		0.2	%		0.3	%
Expected dividends		0.0	%		0.0	%

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Goodwill and Identified Intangibles (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Amortization expense for identifiable purchased intangible assets
Total amortization expense	$ 7,539	$ 7,371
Cost of revenue [Member]
Amortization expense for identifiable purchased intangible assets
Total amortization expense	5,360	5,142
Operating expenses [Member]
Amortization expense for identifiable purchased intangible assets
Total amortization expense	$ 2,179	$ 2,229

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Subsequent Event

3 Months Ended

Mar. 30, 2012

Subsequent Events [Abstract]

SUBSEQUENT EVENT

NOTE 14: SUBSEQUENT EVENT

In April 2012, the Board of Directors authorized a stock repurchase program that provides for the repurchase of up to $25 million of outstanding common stock during the next 18 months. Under the program, the Company could purchase shares of common stock through open market transactions at prices deemed appropriate by management, subject to certain pre-determined price/volume guidelines set, from time to time, by the Board. The timing and amount of repurchase transactions under this program will depend on market conditions and corporate and regulatory considerations. The purchases will be funded from available working capital. The stock repurchase program may be suspended or discontinued at any time.