Content-addressable memory
US4894799A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A content-addressable memory which has a storage bit cell (121, 122), signal supplying circuits (380, 390, 400) and comparison circuits (125, 126, 127, 128). The storage bit cell (121, 122) holds a first data (D) and a second data (D) of opposite phases. The signal supplying circuits (380, 390, 400) supply a first signal (a1) and a second signal (a1), respectively, to a first data line (180) and a second data line (190) of the storage bit cell (121, 122) in response to an input signal (A1) and a control signal (510). The first and second signals (a1, a1) are in opposite phases. The comparison circuits (125, 126, 127, 128) detect the relation between the first (D) stored in the storage bit cell (121, 122) and the first signal (a1) on the first data line (180) supplied from the signal supplying circuits (380, 390, 400) and the relation between the second data (D) stored in the storage bit cell (121, 122) and the second signal (a1) on the second data line (190) supplied from the signal supplying circuits (380, 390, 400). Wherein as part of the signal supplying circuit (380, 390, 400) circuit (400) dissolves the opposite phase relation between the first signal (a1) on the first data li…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.