Data preclassifier method and apparatus for content addressable memory (CAM) device
US6906936B1 · kind B1 · utility
54Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Aug 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A content addressable memory (CAM) device (100) may include a CAM array (102), a CAM array access circuit (104), and a preclassifier circuit (106). A preclassifier circuit (106) may selectively modify portions of an input data value before such an input data value is applied to a CAM array (102). In particular embodiments, a preclassifier circuit (106) may compare a compare portion of an input data value to one or more ranges. If such a portion falls within a range, a preclassifier may substitute a compare portion with a range code value to form a modified input data value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.