| Amortizable Intangible Assets Components |
| | | | | | | | | | | | | | | | | | | | | | | | | | April 27, 2014 | | January 26, 2014 | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | (In thousands) | Acquisition-related intangible assets | $ | 189,239 |
| | $ | (119,094 | ) | | $ | 70,145 |
| | $ | 189,239 |
| | $ | (114,104 | ) | | $ | 75,135 |
| Patents and licensed technology | 446,853 |
| | (239,468 | ) | | 207,385 |
| | 446,196 |
| | (225,319 | ) | | 220,877 |
| Total intangible assets | $ | 636,092 |
| | $ | (358,562 | ) | | $ | 277,530 |
| | $ | 635,435 |
| | $ | (339,423 | ) | | $ | 296,012 |
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