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. 26, 2013
Filed:
Jan. 27, 2011
Mark W. Redekopp, Los Angeles, CA (US);
Mark W. Redekopp, Los Angeles, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
Systems and methods for mapping state elements of digital circuits for equivalence verification are provided. One method for mapping state elements for equivalence verification between a first circuit and a second circuit includes (a) determining a first sequential depth from primary inputs and primary outputs of the first circuit and the second circuit to each state element thereof, wherein the first sequential depth is a minimum count of state elements along any path between two points of a circuit, (b) identifying and mapping first state elements of the first circuit and the second circuit having a unique first sequential depth, (c) determining a second sequential depth from the identified first state elements of the first circuit and the second circuit to the remaining state elements, (d) identifying second state elements of the first circuit and the second circuit having a unique second sequential depth, and (e) repeating (c) and (d) unless the process is no longer generating new unique mappings of state elements.