Patent ID: 9002744
Filing Date: 2015-04-07
Classification: G06F

Abstract:
1. A method for controlling unauthorized use of digital content, the method comprising: identifying digital content stored in an electronic end user device for validation, wherein rendering of the digital content by the electronic end user device is currently unrestricted and does not require a corresponding Digital Rights Management (DRM) mechanism; generating, at the electronic end user device, a digital signature that designates the identified digital content stored therein responsive to identification thereof; determining, at the electronic end user device, usage rights for the identified digital content based on the digital signature thereof, wherein the usage rights specify rights for use of the digital content by the electronic end user device in which the digital content is stored; when a comparison of the digital signature that designates the identified digital content to a plurality of digital signatures in a database does not indicate a match therebetween, allowing usage of the identified digital content for a predetermined period of time and/or number of uses; when the comparison of the digital signature that designates the identified digital content to a plurality of digital signatures in a database indicates a match therebetween, determining, based on the usage rights, that the identified digital content corresponds to an authorized protected media content having circumvented technical protection measures; locally modifying, at the electronic end user device, the identified digital content based on the usage rights to reapply the circumvented technical protection measures to restore the identified digital content to correspond to the authorized protected media content; and preventing rendering of the digital content in response to the locally modifying.