Content addressable memory device
US5051948A · kind A · utility
59Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1989 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Oct 20, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a content addressable memory (CAM) cell according to the present invention, a pair of non-volatile memory transistors hold data, whereby stored data will not disappear even if power is cut. Conducting terminals of these non-volatile transistors are connected to a bit line pair, so that the stored data can be directly read out from the bit line pair. Further, the invention CAM system converts the value of a current flowing in a match line into a voltage value to perform content reference, and hence the same can be employed as an associative memory system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.