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. 10, 2016
Filed:
Dec. 02, 2014
Applicant:
Mentor Graphics Corporation, Wilsonville, OR (US);
Inventors:
Xijiang Lin, West Linn, OR (US);
Mark A. Kassab, Wilsonville, OR (US);
Janusz Rajski, West Linn, OR (US);
Assignee:
Mentor Graphics Corporation, Wilsonville, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3185 (2006.01);
U.S. Cl.
CPC ...
G01R 31/318536 (2013.01); G01R 31/318547 (2013.01);
Abstract
Various aspects of the disclosed techniques relate to using dynamic shift for test pattern compression. Scan chains are divided into segments. Non-shift clock cycles are added to one or more segments to make an uncompressible test pattern compressible. The one or more segments may be selected based on compressibility, the number of specified bits and/or the location on the scan chains. A dynamic shift controller may be employed to control the dynamic shift.