Segment Reporting (Tables)

6 Months Ended

Jul. 31, 2011

Revenues related to operations in the geographic regions were:


	Three months ended July 31,				Six months ended July 31,
	2011		2010		2011		2010
Revenues:
North America	$	100,071	$	73,121	$	190,394	$	138,286
Europe		46,642		48,888		98,839		91,465
Japan		25,766		20,161		67,400		51,829
Pacific Rim		41,261		45,764		87,142		86,931

Total revenues	$	213,740	$	187,934	$	443,775	$	368,511

Revenue Information by Products and Services

We segregate revenue into five categories of similar products and services. Each category includes both product and related support revenues. Revenue information is as follows:


	Three months ended July 31,				Six months ended July 31,
	2011		2010		2011		2010
Revenues:
IC Design to Silicon	$	53,633	$	71,192	$	139,921	$	142,724
Integrated System Design		57,300		49,922		108,845		94,513
Scalable Verification		62,060		39,629		120,802		76,366
New & Emerging Products		23,616		11,797		41,584		25,125
Services & Other		17,131		15,394		32,623		29,783

Total revenues	$	213,740	$	187,934	$	443,775	$	368,511

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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