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:
Mar. 15, 2005
Filed:
Jul. 03, 2003
Bertan Tezcan, Mountain View, CA (US);
Michael Miller, Saratoga, CA (US);
Bertan Tezcan, Mountain View, CA (US);
Michael Miller, Saratoga, CA (US);
Integrated Device Technology, Inc., Santa Clara, CA (US);
Abstract
CAM devices and methods of operating CAM devices include mapping search word portions to partitions and virtual subpartitions in a CAM core. Some embodiments of the invention can provide, for example, a hybrid CAM device that includes a mapping circuit for implementing such partitioning and virtual subpartitioning that is implemented in memory, such as a random access memory (RAM) or a combination of CAM and RAM, that is integrated with the CAM core. In some embodiments, a CAM device includes a search word input, a CAM core comprising a plurality of CAM cells, and a virtual partitioning circuit that selectively enables a partition in the CAM core for search of a portion of a search word at the search word input responsive to the search word, and that provides a mapping of the search word to a comparand input to the CAM core. The mapping defines a virtual subpartition in the CAM core. The invention may be embodied as apparatus and methods.