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:
Oct. 21, 2008
Filed:
Mar. 05, 2004
Jack C. Wybenga, Plano, TX (US);
Patrick W. Ireland, Sanger, TX (US);
Patricia K. Sturm, McKinney, TX (US);
Jack C. Wybenga, Plano, TX (US);
Patrick W. Ireland, Sanger, TX (US);
Patricia K. Sturm, McKinney, TX (US);
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A routing table search circuit comprising a forwarding table containing forwarding table entries, each forwarding table entry comprising a destination address, and a content addressable memory (CAM) comprising a CAM lookup table, the CAM receiving a search key and outputting a CAM search result corresponding to the search key from the CAM lookup table. The search key comprises at least: i) a packet type field associated with the first received address and ii) an address field containing a most significant bits portion of the first received address. The routing table search circuit also comprises M pipelined memory stages for storing a trie table that translates the first received address into the first destination address. The M pipelined memory stages are searched using the CAM search result and a remaining bits portion of the first received address. Each of the M pipelined memory stages outputs a stage search result.