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:
Dec. 16, 2014
Filed:
May. 28, 2013
Synopsys, Inc., Mountain View, CA (US);
Sudipta Kundu, Hillsboro, OR (US);
Carl Preston Pixley, Beaverton, OR (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A design is verified by using equivalence checking to compare a word-level description of the design to a bit-level description of the design. A word-level data flow graph (DFG) based on the word-level description and a bit-level DFG is obtained. Structural analysis is used to reduce the graphs and partition them into smaller portions for the equivalence checking. The analysis includes searching the bit-level DFG to find partial-product encoding and removing redundancy from the bit-level DFG. A reference model with architectural information from the bit-level DFG is created based on the word-level DFG. The reference model is reduced and equivalence checked against the bit-level DFG to determine if the word-level description is equivalent to the bit-level description.