| 摘要 |
PURPOSE:To simplify a configuration and to reduce cost by modulating video broadcast signals of plural channels in the lump. CONSTITUTION:A branching device 12 branching a television broadcast signal from an antenna 11 and broadcast equipments 15-18 outputting video broadcast signals of plural channels being a 3rd channel or below are provided to the device. Moreover, a mixer 19 mixing a video broadcast signal and a television broadcast signal, a common line 21 through which its output is sent, and selection charging means 231-233 are provided. Furthermore, a viewing control means is provided, which modulates the video broadcast signal from the common line 21 at non selection of the video broadcast signal, disables viewing of the television receivers 221-223 and stops the modulation at selection of the video broadcast signal so as to attain the viewing of the television receiver. Thus, the video broadcast signals of plural channels are integrated into the charge system in the lump, but not at each channel. Thus, the configuration is simplified and the cost is reduced. |
