Static information storage and retrieval – Associative memories – Ferroelectric cell
Reexamination Certificate
2005-12-13
2005-12-13
Phung, Anh (Department: 2824)
Static information storage and retrieval
Associative memories
Ferroelectric cell
C365S189090
Reexamination Certificate
active
06975526
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: 5964857 (1999-10-01), Srinivasan et al.
patent: 6249449 (2001-06-01), Yoneda et al.
patent: 6307767 (2001-10-01), Fuh
Regev Alon
Regev Zvi
Dickstein , Shapiro, Morin & Oshinsky, LLP
Micro)n Technology, Inc.
Nguyen Hien
Phung Anh
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