Detecting “almost match” in a CAM

Details Detecting “almost match” in a CAM Detecting “almost match” in a CAM

2007-05-29

2007-05-29

Elms, Richard (Department: 2824)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S189070, C365S189090

Reexamination Certificate

active

10969173

ABSTRACT:
An apparatus and method is disclosed for detecting CAM words having a “near match” condition, where “near match” is defined by a CAM word having one or more mismatching bits. Each cell in a CAM word is connected to a match line, where a small known current is impressed upon the line each time a bit does not match with search data. The total current is sensed to establish a priority for each respective CAM word. Each priority for each CAM word is then decoded to determine the Cam word having the highest priority. Under an alternate embodiment, a minimum priority level select circuit is disclosed, where a user may specify an acceptable priority level that is generated from a CAM word search.

REFERENCES:
patent: 6845025 (2005-01-01), Nataraj
patent: 6856528 (2005-02-01), Kim
patent: 7006368 (2006-02-01), Arsovski et al.

Affiliated with

Also associated with

Rating

Detecting “almost match” in a CAM does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting “almost match” in a CAM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting “almost match” in a CAM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3820690