Invention Grant
US07865723B2 Method and apparatus for multicast delivery of program information 有权
用于多播传送节目信息的方法和装置

Method and apparatus for multicast delivery of program information
Abstract:
Method and apparatus providing program information to client devices for at least one multicast stream of digital content is described. In one embodiment, session description messages for the at least one multicast stream of digital content are generated. Each of the session description messages includes at least one content access parameter. The at least one content access parameter may include digital rights management (DRM) data, channel key identification data associated with the at least one channel of the at least one multicast stream of digital content, and/or data indicative of whether each session description message is associated with a channel, a program, or a program segment. Each of the session description messages is signed using a cryptographic key. The session description messages are then multicasted to the client devices using a predefined multicast address.
Public/Granted literature
Information query
Patent Agency Ranking
0/0