Segment Reporting

3 Months Ended

Apr. 30, 2011

Segment Reporting

(19) Segment Reporting—Our Chief Operating Decision Makers (CODMs), which consist of the Chief Executive Officer and the President, review our consolidated results within one operating segment. In making operating decisions, our CODMs primarily consider consolidated financial information accompanied by disaggregated revenue information by geographic region.

We eliminate all intercompany revenues in computing revenues by geographic regions. Revenues related to operations in the geographic regions were:

Three months ended April 30,	2011		2010
Revenues:
North America	$	90,323	$	65,165
Europe		52,197		42,577
Japan		41,634		31,668
Pacific Rim		45,881		41,167
Total revenues	$	230,035	$	180,577

For the three months ended April 30, 2011, one customer accounted for 21% of total revenues. No single customer accounted for 10% or more of total revenues for the three months ended April 30, 2010.

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 April 30,	2011		2010
Revenues:
IC Design to Silicon	$	86,288	$	71,532
Integrated System Design		51,545		44,591
Scalable Verification		58,742		36,737
New & Emerging Products		17,968		13,328
Services & Other		15,492		14,389
Total revenues	$	230,035	$	180,577