Patent · US Expired

CAM (content addressable memory) apparatus

US7158396B2 · kind B2 · utility

1Cited by

6References

22Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Noel Hatsch · Unterhaching, DE
Winfried Kamp · Munich, DE
Siegmar Koppe · Laatzen, DE
Thomas Kunemund · Birkenfeld, DE
Heinz Soldner · Bruckmühl, DE
Michel d'Argouges · Birkenfeld, DE

Key dates

Filing date	Nov 26, 2003
Grant date	Jan 2, 2007
Priority date	—
Expiry date	Nov 23, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG06F2207/025
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The present invention provides a CAM (content addressable memory) apparatus having: a first memory device (10) with a word line input (WL) and at least one storage node (12; 13) for storing a first bit of a data word; a second memory device (11) with a word line input (WL) and at least one storage node (14; 15) for storing a second bit of a data word; and a comparator device (16) for comparing the first and second stored bits with two precoded comparison bits fed via four inputs (20; 21; 22; 23) and for driving a hit node (17) in the event of the first stored bit corresponding to the first comparison bit and the second stored bit corresponding to the second comparison bit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.