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:
Nov. 11, 2008
Filed:
Sep. 22, 2004
Srinivasan Venkatachary, Sunnyvale, CA (US);
Ajay Srikrishna, Fremont, CA (US);
Jagadeesan Rajamanickam, San Jose, CA (US);
Srinivasan Venkatachary, Sunnyvale, CA (US);
Ajay Srikrishna, Fremont, CA (US);
Jagadeesan Rajamanickam, San Jose, CA (US);
Netlogic Microsystems, Inc., Mountain View, CA (US);
Abstract
A search engine method and apparatus can store and update status information for each entry of a content addressable memory (CAM) array, for a learn operation, or the like. A search engine can include a status memory block external to and independent of the CAM array. A status memory block () can include a number of memory sections (-to-) that each includes a number of bit locations for storing a free/not-free status of CAM entries in a hierarchical fashion. Corresponding control sections (-to-) can include priority encoders (-to-) that determine a first free element in a memory section for a next hierarchical level, as well as status aggregation logic (-to-) that can generate an aggregated status that is propagated to a previous hierarchical level.