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. 19, 2016
Filed:
Jul. 25, 2013
Applicant:
Google Technology Holdings Llc, Mountain View, CA (US);
Inventors:
Paul Moroney, San Diego, CA (US);
Kuang M. Chen, San Diego, CA (US);
Ambikacharan P. Makam, San Diego, CA (US);
Assignee:
GOOGLE TECHNOLOGY HOLDINGS LLC, Mountain View, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/60 (2013.01); G06F 21/10 (2013.01); G06F 21/72 (2013.01); H04N 21/414 (2011.01); H04N 21/442 (2011.01); H04N 21/4627 (2011.01); H04N 21/6334 (2011.01); H04N 21/6547 (2011.01);
U.S. Cl.
CPC ...
G06F 21/60 (2013.01); G06F 21/10 (2013.01); G06F 21/725 (2013.01); H04N 21/41407 (2013.01); H04N 21/4424 (2013.01); H04N 21/4627 (2013.01); H04N 21/6334 (2013.01); H04N 21/6547 (2013.01);
Abstract
Methods and devices for clock roll-back detection in non-secure mobile platforms are disclosed. A first time is received from a secure time source. The first time is recorded as a last known good time ('LKGT') in secure storage on the mobile device. The LKGT is advanced and stored whenever a triggering event occurs. The mobile device receives a second time from the secure time source and records the second time as a subsequent stored LKGT in secure storage.