Thursdays the PTO publishes new pending patent applications. Both of this week's Spotlight Applications concern aspects of digital rights management. Assigned to Nagravision (CH), the first application discloses techniques for processing a digital broadcast transport stream. Assigned to ContentGuard, the second application discloses techniques for digital rights management using advanced copy with issue rights, and managed copy tokens
20140304728, "Method and multimedia unit for processing a digital broadcast transport stream," assigned to Nagravision ,S.A (CH).
Abstract
A method of managing the processing of a digital broadcast transport stream by a multimedia unit identified by a personal identifier. The multimedia unit being connectable to a security module associated to the multimedia unit and/or a server through an IP-connection with a return path. The transport stream comprising scrambled content packets and conditional access messages that are necessary for descrambling the content packets. The method comprises: sending the conditional access messages from the multimedia unit to either the server or the security module; verifying the authentication of the multimedia unit and/or the validity of access rights allocated to the multimedia unit; if the authentication fails, preventing any further processing of the conditional access message; securely obtaining, at the multimedia unit, the control data corresponding to the conditional access messages; and descrambling the audio/video/data content packets using the control data at the multimedia unit.20140304177, "System and method for digital rights management using advanced copy with issue rights, and managed copy tokens," assigned to ContentGuard Holdings.
Abstract
A system, method and computer program product for a digital content player having a DRM agent to perform rights management operations on a digital content package, including loading rights management instructions to be executed by the digital content player, the rights management instructions being associated with the digital content package, executing the rights management instructions on the digital content player, and loading supporting licenses associated with the digital content package for processing by the DRM agent. The DRM agent deciding whether to permit the rights management operations requested by the rights management instructions. Further exemplary embodiments include systems, methods and computer program products for associating usage rights with digital content packages, managing of digital rights tokens, managing of digital content packages having predetermined broadcast dates, preserving of usage rights when content is transferred between DRM environments, and distributing content
