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:
Nov. 14, 2023
Filed:
Sep. 06, 2019
Siemens Industry Software Inc., Plano, TX (US);
Yingdi Liu, Wilsonville, OR (US);
Nilanjan Mukherjee, Wilsonville, OR (US);
Janusz Rajski, West Linn, OR (US);
Grzegorz Mrugalski, Swarzedz, PL;
Jerzy Tyszer, Poznan, PL;
Bartosz Wlodarczak, Swarzȩdz, PL;
Siemens Industry Software Inc., Plano, TX (US);
Abstract
A circuit comprises scan gating devices inserted between outputs of scan chains and inputs of a test response compactor. The scan gating devices divides the scan chains into groups of scan chains. Each of the scan gating devices operates in either an enabled mode or a disenabled mode based on a first signal. A scan gating device operating in the enabled mode blocks, blocks only at some clock cycles, or does not block a portion of a test response of a test pattern captured by and outputted from a scan chain in the associated scan chain group based on a second signal. Scan gating devices operating in the disenabled mode do not block, or based on a third signal, either block or do not block, a portion of the test response captured by and outputted from all scan chains in each of the associated scan chain groups.