Large-capacity content addressable memory
US5995401A · kind A · utility
14Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A large-capacity CAM (content addressable memory) is disclosed. RAM core cells are used to store the CAM data. The comparison function is not performed in the core cells, but rather in comparators which are placed adjacent to a plurality of core cells, in such a way that the plurality of core cells shares access to a single comparator. Access to the comparator is shared by a time-division multiplexed means, requiring a plurality of serialized operations. These operations are self-timed and transparent to the user, because they occur in a single cycle of the externally-supplied clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.