Patent ID: 8392333
Filing Date: 2013-03-05
Classification: G06F,H04N,Y10S

Abstract:
1. Method for providing protected audio/video content for a content protection and copy management system based on a network of devices, comprising: obtaining primary data as or being representative for a content item to be provided, obtaining usage state information which is descriptive for a usage state with respect to the content item to be provided, embedding said usage state information or a derivative thereof into said primary data or a derivative thereof, thereby generating secondary data as or being representative for a content item to be provided and providing said secondary data or a derivative thereof as said content item to be provided with the embedded usage state information, wherein said usage state information is embedded in a structured binary coded form within said primary data or said derivative thereof, said set of usage state information comprises one or an arbitrary plurality of items of the group of items which consists of copy control, propagation restriction as mandatory, concurrent render count, disable content scrambling and time-based content usage, in a usage state information data structure for an item of content a first section consisting of a mandatory content management usage state information is given which defines global content management usage rights for the content item, said first section consisting of said mandatory content management usage state information is followed by a section defining the outer propagation restriction usage state information for the content item, and the outer propagation restriction usage state information is followed by an additional set of content management usage state information, adapted to specify a different set of content management usage rules for a given content item which shall apply only within the area corresponding to the foregoing outer propagation restriction usage state information.