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:
Dec. 29, 2015
Filed:
Jul. 31, 2014
Winbond Electronics Corporation, Zhubei, TW;
Uri Kaluzhny, Beit Shemesh, IL;
Tsachi Weiser, Even Yehuda, IL;
Valery Teper, Petach Tikva, IL;
Nir Tasher, Tel Mond, IL;
WINBOND ELECTRONICS CORPORATION, Zhubei, TW;
Abstract
An apparatus for detecting tampering with a clock of a state-machine, comprising, a master state-machine having master states and driven by a master clock, the master states being switchable responsive to events, and an auxiliary state-machine having auxiliary states and driven by an auxiliary clock synchronous with the master clock, the auxiliary states being switchable responsive to a signal generated based at least on said events, consequently establishing a correspondence between the master states and the auxiliary states, thus ensuing that subsequent to tampering with the master clock the correspondence between the master states and the auxiliary states become discordant, thereby indicating that the master clock has been tampered with.