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.

Date of Patent:
Aug. 29, 2017

Filed:

Apr. 27, 2016
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Steven M. Douskey, Rochester, MN (US);

Ryan A. Fitch, Southfield, MI (US);

William V. Huott, Holmes, NY (US);

Mary P. Kusko, Hopewell Junction, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3177 (2006.01); G01R 31/28 (2006.01); G01R 31/3185 (2006.01); G01R 31/317 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3177 (2013.01); G01R 31/31723 (2013.01); G01R 31/318544 (2013.01); G01R 31/318541 (2013.01);
Abstract

A failing latch is identified on a chip including a plurality of latches with the failing latch receiving data propagated from a first set of test input latches. A diagnostic set of latches is determined which includes the failing latch and a set of related latches. The set of related latches each receives data propagated from at least one test input latch from the first set of test input latches. The set of related latches is identified from a related latches table. One or more tests are performed on the chip and test output data is collected from the diagnostic set of latches. The related latches table is created by tracing from a target latch.


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