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:
Feb. 23, 2015
Applicant:
Cisco Technology, Inc., San Jose, CA (US);
Inventors:
Anthony H. Grieco, Wake Forest, NC (US);
Chirag Shroff, Cary, NC (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/45 (2013.01); G01R 31/3185 (2006.01);
U.S. Cl.
CPC ...
G06F 21/45 (2013.01); G01R 31/318588 (2013.01);
Abstract
A technique for detecting unauthorized manipulation of a circuit. In one embodiment, a test data channel of a boundary scan system of a circuit is monitored while the circuit is in operation. By monitoring the test data channel, a monitoring module determines the presence of a signal on the test data channel. During operation, activity on this channel may represent a potential unauthorized manipulation attempt. An alarm condition may therefore be created if a signal is detected.