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:
Jul. 28, 2015
Filed:
Jun. 13, 2012
Richard F. Freitas, San Martin, CA (US);
Robert K. Montoye, Rochester, MN (US);
Rajendra Shinde, Stanford, CA (US);
Richard F. Freitas, San Martin, CA (US);
Robert K. Montoye, Rochester, MN (US);
Rajendra Shinde, Stanford, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A regular expression matcher system, including: a deterministic finite state machine (DFSM); a ternary content addressable memory (TCAM) matcher to compare a word stored at the TCAM matcher to an input stream, wherein the word determines a state-to-state transition of the DFSM from a comparison result; a programmable logic connected to an output of the TCAM matcher to identify a next state in the DFSM based on the comparison result; a state register to update a current state of the DFSM to the next state; and a collection data structure coupled to the TCAM matcher and the programmable logic to store a sequence of required state transitions for the DFSM, wherein the programmable logic determines a next required state transition to be matched from the sequence.
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