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    • 3. 发明授权
    • Method and systems for multicast using multiple transport streams
    • 使用多个传输流的组播方法和系统
    • US07992172B1
    • 2011-08-02
    • US09679210
    • 2000-10-04
    • Donald F. GordonBrian FeinbergEugene GershteinSadik BayrakeriJohn P. ComitoEdward A. Ludvig
    • Donald F. GordonBrian FeinbergEugene GershteinSadik BayrakeriJohn P. ComitoEdward A. Ludvig
    • H04N7/16
    • H04N21/26283H04N5/45H04N7/0806H04N7/163H04N7/165H04N19/577H04N21/236H04N21/2385H04N21/2402H04N21/2408H04N21/482H04N21/6547
    • A system for delivering interactive program guide (IPG) includes a number of encoding units, at least one transport stream generator, and a session manager. The encoding units encode a number of IPG pages and generate a number of (e.g., guide, video, audio, and data) streams, with each stream being assigned a respective packet identifier (PID). Each transport stream generator receives and multiplexes selected ones of the streams from one or more encoding units into one or more transport streams. The session manager directs each transport stream generator to generate one or more transport streams based on usage. The system may further include a bandwidth manager that monitors usage and reports the usage to the session manager. The encoding units can be operated to encode only once each IPG page to be transmitted. Each transport stream generator can be operated to provide differentiated IPG for the neighborhood being served by the transport stream generator. The number of transport streams generated by each transport stream generator can be dynamically adjusted based on demands from the neighborhood being served by the transport stream generator. Each transport stream generator can be directed to generate an additional transport stream if usage exceeds the capacity of the currently transmitted transport streams.
    • 用于提供交互式节目指南(IPG)的系统包括多个编码单元,至少一个传输流发生器和会话管理器。 编码单元对多个IPG页面进行编码,并生成多个(例如,引导,视频,音频和数据)流,每个流被分配相应的分组标识符(PID)。 每个传输流生成器从一个或多个编码单元接收并复用选定的一个流到一个或多个传输流中。 会话管理器指示每个传输流生成器基于使用来生成一个或多个传输流。 该系统还可以包括带宽管理器,其监视使用情况并向会话管理器报告使用情况。 编码单元可以被操作以仅对要发送的每个IPG页面进行编码。 每个传输流发生器可以被操作以为由传输流发生器服务的邻域提供差异IPG。 可以基于由传输流发生器服务的邻域的需求来动态地调整由每个传输流发生器生成的传输流的数量。 如果使用超过当前传输的传输流的容量,则每个传输流生成器可以被引导以生成附加传输流。