The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Aug. 26, 2004
Chuen-der Lien, Los Altos Hills, CA (US);
Kee Park, San Jose, CA (US);
Scott Yu-fan Chu, Cupertino, CA (US);
Chuen-Der Lien, Los Altos Hills, CA (US);
Kee Park, San Jose, CA (US);
Scott Yu-Fan Chu, Cupertino, CA (US);
Integrated Device Technology, Inc., San Jose, CA (US);
Abstract
Content addressable memory (CAM) devices include at least one CAM array having a plurality of columns of ternary CAM cells therein. A bit/data line driver circuit, which receives search words and write words, is electrically coupled to the CAM array. The bit/data line driver circuit is configured to save power by logically combining incoming search words with a global mask that designates locations of active ones of the plurality of columns having exclusively locally masked CAM cells at valid entries therein. The bit/data line driver circuit includes a global mask generator configured to receive write words to be added to the CAM array during respective write operations.