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:
Jan. 16, 2018
Filed:
Dec. 15, 2015
Applicants:
Proton World International N.v., Zaventem, BE;
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Inventors:
Jean-Louis Modave, Ottignies, BE;
Fabrice Marinet, Chateauneuf le Rouge, FR;
Denis Farison, Le Tholonet, FR;
Assignees:
STMICROELECTRONICS (ROUSSET) SAS, Rousset, FR;
PROTON WORLD INTERNATIONAL N.V., Diegem, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); G06F 21/85 (2013.01); G06F 21/73 (2013.01); G06F 21/81 (2013.01); G11C 27/00 (2006.01);
U.S. Cl.
CPC ...
G06F 21/85 (2013.01); G06F 21/73 (2013.01); G06F 21/81 (2013.01); G11C 27/00 (2013.01);
Abstract
A method of authenticating a slave device. The method includes initializing, by a host device, a charge retention circuit of the slave device, and receiving, by the host device, an indication of a discharge time of the charge retention circuit. The host device authenticates the slave device based on the received indication of the discharge time of the charge retention device.