Goodwill and Acquired Intangible Assets, Net (in thousands) (Tables)

6 Months Ended

Jul. 28, 2012

Schedule of Finite-Lived Intangible Assets by Major Class

Acquired Intangible Assets, Net

		July 28, 2012							January 28, 2012
	Range of Useful Lives	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amount
Purchased technology	2.5 - 7 years	$	103,490	$	(59,867	)	$	43,623	$	103,490	$	(50,906	)	$	52,584
Core technology	6 - 8 years		178,000		(153,208	)		24,792		178,000		(142,932	)		35,068
Trade name	5 years		1,500		(374	)		1,126		1,500		(232	)		1,268
Customer contracts	5 - 7 years		89,900		(55,014	)		34,886		89,900		(47,856	)		42,044
In-process research and development	*		9,700		—			9,700		10,541		—			10,541
Total intangible assets, net		$	382,590	$	(268,463	)	$	114,127	$	383,431	$	(241,926	)	$	141,505

* Upon completion of the project, the related in-process research and development (“IPR&D”) assets will be amortized over its estimated useful life. If any of the projects are abandoned or the forecast of the project indicates that the fair value is less than the carrying amount, the Company will be required to write down the related IPR&D asset.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Based on the identified intangible assets recorded at July 28, 2012, the future amortization expense excluding IPR&D for the next five fiscal years is as follows (in thousands):

Fiscal year
Remainder of fiscal 2013	$	24,390
2014		36,254
2015		14,852
2016		12,088
2017		10,896
Thereafter		5,947
	$	104,427