Content addressable memory based on a ripple search scheme
US7894226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scheme for ultra-low power content addressable memory based on a ripple search is disclosed. In one embodiment, a system for content addressable memory (CAM), includes a storage unit for storing a portion of content data, and a match module for comparing the portion of the content data with a respective portion of search data received by the match module. The match module includes a first static logic gate associated with a first half of the storage unit storing a sub-portion of the portion of the content data, and a second static logic gate associated with a second half of the storage unit. The first static logic gate forwards a signal for disabling the second static logic gate if the sub-portion of the portion of the content data does not match with a respective sub-portion of the portion of the search data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.