Patent ID: 7684566
Filing Date: 2010-03-23
Classification: H04N

Abstract:
1. A method of rendering a stream of content having at least one rights management (RM) protected sub-stream therein, each RM-protected sub-stream being protected according to a particular protection scheme, the method comprising: receiving the stream including a data object including data representative of each sub-stream and a header object including an RM description object, the RM description object including at least one content encryption record, each content encryption record corresponding to a particular protection scheme and including with regard to the protection scheme thereof an identification of the protection scheme and at least one encrypted object record, each encrypted object record relating to a particular sub-stream protected according to the identified protection scheme of the content encryption record thereof and including an identification of the particular sub-stream; locating the header object of the stream, each content encryption record in the header object, and each encrypted object record of each content encryption record in the header object; and for each RM-protected sub-stream of the stream: