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:
Oct. 02, 2012
Filed:
Oct. 20, 2006
Wu-tung Cheng, Lake Oswego, OR (US);
Manish Sharma, Wilsonville, OR (US);
Thomas Hans Rinderknecht, Tualatin, OR (US);
Wu-Tung Cheng, Lake Oswego, OR (US);
Manish Sharma, Wilsonville, OR (US);
Thomas Hans Rinderknecht, Tualatin, OR (US);
Mentor Graphics Corporation, Wilsonville, OR (US);
Abstract
In embodiments of the disclosed technology, diagnosis of a circuit is performed using compactor signatures (a technique referred to herein as 'signature-based diagnosis'). Signature-based diagnosis typically does not require a test step that bypasses the compactor. Compactor signatures can be read from a compactor on a per-pattern basis, and an expected signature can be loaded into a compactor while an actual signature is being read from the compactor. Error functions can be used to describe relationships between errors in scan cell values and per-pattern compactor signatures, and the functions can be used to help generate a list of fault candidates in a circuit design.