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:
May. 22, 2018
Filed:
Jan. 12, 2015
Applicant:
Mentor Graphics Corporation, Wilsonville, OR (US);
Inventors:
Assignee:
Mentor Graphics Corporation, Wilsonville, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3177 (2006.01); G01R 31/3185 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3177 (2013.01); G01R 31/318525 (2013.01); G01R 31/318544 (2013.01); G01R 31/318569 (2013.01); G01R 31/31853 (2013.01); G01R 31/318533 (2013.01);
Abstract
Embodiments of the disclosed technology comprise software-based techniques that can be used to improve scan chain test pattern generation and scan chain failure diagnosis resolution. For example, certain embodiments can be used to generate high quality chain diagnosis test patterns that are able to isolate a scan chain defect to a single scan cell. Such embodiments can be used to generate a 'complete' test set—that is, a set of chain diagnosis test patterns that is able to isolate any scan chain defect in a faulty scan chain to a single scan cell.