| 摘要 |
A selected program channel of a video signal, received and tuned to by a set-top box (STB), is simultaneously displayed on a television and on a display of an auxiliary display device that controls the selection of program channels displayed on the television. The STB has a first and second interface. The STB selects the program channel and sends the selected program channel, via the first interface, to a television which displays program content of the selected program channel. The STB encodes the selected program channel into a streaming video signal and sends the streaming video signal to the auxiliary display device via the second interface. The auxiliary display device decodes the streaming video signal into the selected program channel and displays the program content of the selected program channel.
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