| 摘要 |
A remote controller (116) remotely controls multiple remote cable headend systems (303A-303N) physically separated from it for controlling the distribution of audio and video cable programming. A satellite link (316) is used in the forward control data stream (302A-302N) to connect the controller to multiple remote headend sites (303A-303N). A low speed communication connection (304A-304N), such as frame relay (322A-322N), is used in a return path from the remote headend systems to the controller in order to support the required return connectivity for a closed-loop system. The controller receives IP acknowledgements and any other reverse control data in the return path (304A-304N) from the remote cable headend systems. The satellite link in the forward control data stream (302A-302N) can be the same satellite link used to transmit the video/audio data streams, constituting part of the video and audio programming, to the remote cable headend systems. |
