Exhibit 12.1

Harmonic Inc.

Computation of Ratio of Earnings Available to Cover Fixed Charges

(in thousands, except for ratio amounts)

	Fiscal Year Ended December 31,
	2000			2001			2002			2003			2004
Pre- tax income (loss)		(1,672,579	)		(167,213	)		(76,418	)		(29,133	)		2,163
Total fixed charges		2,026			3,700			3,369			3,506			2,882
Total earnings (losses) before fixed charges		(1,670,553	)		(163,513	)		(73,049	)		(25,627	)		5,045
Interest expense		28			125			307			154			103
Interest attributable to rentals a		1,998			3,575			3,062			3,352			2,779
Total fixed charges		2,026			3,700			3,369			3,506			2,882
Ratio of earnings to fixed charges b		—			—			—			—			1.8

a)	Interest attributable to rentals includes one-third of rental expense.
b)	Due to Harmonic’s losses in 2000, 2001, 2002, and 2003, the ratio coverage was less than 1:1. Additional earnings of $1.7 billion, $167.2 million, $76.4 million, $29.1 million would have been required in each of these periods, respectively, to achieve a coverage of 1:1.