| 摘要 |
<p>A TV system, for example the type used in hotels or motels, provides non-subscription channels and a subscription channel all on the same facilities. The subscription channel is transmitted at the same frequency as the normal output frequency of a UHF tuner. Means are provided to connect the facilities to the conventional VHF input of a TV receiver and to the UHF input of a receiver VHF tuner. When in the latter position, the VHF tuner oscillator is disabled and a billing transmitter is activated to send appropriate billing information back to the transmitting location.</p> |
