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:
Apr. 01, 2014
Filed:
Jun. 08, 2007
Michael Holtzman, Cupertino, CA (US);
Rotem Sela, Maalot, IL;
Ron Barzilai, Cupertino, CA (US);
Fabrice E. Jogand-coulomb, San Carlos, CA (US);
Michael Holtzman, Cupertino, CA (US);
Rotem Sela, Maalot, IL;
Ron Barzilai, Cupertino, CA (US);
Fabrice E. Jogand-Coulomb, San Carlos, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
A method for improving accuracy of a time estimate used in digital rights management (DRM) license validation is disclosed. In one embodiment, a memory device receives a request to validate a DRM license stored on the memory device, wherein the DRM license is associated with a time stamp update policy (TUP) that specifies when a new time stamp is needed. Before attempting to validate the DRM license, the memory device determines if a new time stamp is needed based on the TUP associated with the DRM license. If a new time stamp is needed, the memory device receives the new time stamp and then attempts to validate the DRM license using a time estimate based on the new time stamp. Other embodiments are disclosed, and each of the embodiments can be used alone or together in combination.