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. 22, 2005
Filed:
Feb. 14, 2002
Eyal Oren, Raanana, IL;
David E. Belz, Raanana, IL;
Eyal Oren, Raanana, IL;
David E. Belz, Raanana, IL;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Methods and apparatus are disclosed for matching a string with multiple lookups using a single associative memory, such as, but not limited to binary and ternary content-addressable memories (CAMs). In one implementation, an information string is partitioned into multiple segments. A first lookup operation is performed on the associative memory using the first segment to produce a first associative memory result, which is used as input to a memory lookup operation to produce a first result. The first result can be programmed to have any desired value or length. This first result along with a second segment of the information string is then used as input to the same associative memory to produce a second associative memory result, which is typically used as input to a memory lookup operation to produce a second result. This process can be repeated for an arbitrary or predetermined number of times.