Method and apparatus for aborting content addressable memory search operations
US7586772B2 · kind B2 · utility
3Cited by
4References
6Claims
0Family size
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Key dates
| Filing date | Aug 4, 2006 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | May 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Content Addressable Memory (CAM) search operations are aborted in response to a search abort signal, thus preserving previous CAM search results. In one embodiment, a CAM search operation is aborted by activating a local CAM match line in response to a search field provided to a CAM and preventing activation of a global CAM match line associated with the local CAM match line in response to a search abort signal. By preventing activation of global CAM match lines, monotonic storage devices included in a holding register that captures CAM search results are prevented from overwriting previously stored CAM search results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.