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:
Aug. 08, 2017
Filed:
Nov. 18, 2015
International Business Machines Corporation, Armonk, NY (US);
Benedikt Geukes, Stuttgart, DE;
Bodo Hoppe, Tamm, DE;
Matteo Michel, Chemnitz, DE;
Juergen Wakunda, Ilsfeld, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Some embodiments include a method for processing a scan chain in an integrated circuit, the method comprising receiving, in the integrated circuit, the scan chain, wherein the scan chain includes a secret key pattern; separating the secret key pattern from the scan chain; storing the scan chain in a first plurality of latches; storing the secret key pattern in a second plurality of latches; comparing the secret key pattern to a reference key pattern, the reference key pattern stored in a third plurality of latches; determining, based on the comparing the secret key pattern to the reference key pattern, that the secret key pattern does not match the reference key pattern; and generating a signal indicating that the secret key pattern does not match the reference key pattern.