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:
Jan. 02, 2024
Filed:
Apr. 26, 2022
Xilinx, Inc., San Jose, CA (US);
Sachin Kumawat, Foster City, CA (US);
David K. Liddell, Longmont, CO (US);
Paul R. Schumacher, Berthoud, CO (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
A system includes a first multi-port RAM storing an instruction table. The instruction table specifies a regular expression for application to a data stream and a second multi-port RAM configured to store a capture table having capture entries decodable for tracking position information for a sequence of characters matching a capture sub-expression of the regular expression. The system includes a regular expression engine processing the data stream to determine match states by tracking active states for the regular expression and priorities for the active states by storing the active states of the regular expression in a plurality of priority FIFO memories in decreasing priority order. The system includes a capture engine operating in coordination with the regular expression engine to determine character(s) of the data stream that match the capture sub-expression based on the active state being tracked and decoding the capture entries of the capture table.