| 摘要 |
<p>A video signal transceiver has a triax port (13), a baseband port, a demodulator (75) for converting a HF video signal received at said triax port (13) into a baseband video signal for outputting at said baseband port and at least one modulator (64, 65) for converting a baseband control signal received at said baseband port into a HF control signal for outputting at said triax port (13), a fibre-optical port (14), an optical receiver (56) for converting an optical video signal received at said fibre-optical port into a baseband video signal, a switch (58) for connecting either an output of said demodulator (75) or of said optical receiver (56) to a video signal line of said baseband port, and an optical transmitter (69) for transmitting, via said fibre-optical port (14), an optical control signal derived from said baseband control signal.</p> |
