| 摘要 |
PURPOSE:To realize the viewing of plural independent broadcast programs with different fare rates, by providing a coin timer on each transmission line connecting a modulator to each TV picture receiver and selecting either one of the plural video and voice signals via the coin timer according to the number of the thrown-in coins. CONSTITUTION:The normal TV signal sent from a preamplifier 2 connected to an antenna 1 is fed to a mixing part 5 of a community receiving system. Then the independent broadcast TV signal supplied through a TVR3a, a video disk 3b and a TV camera 3c is applied to the part 5 via the modulators 4a-4c. The normal and indenpendent TV signals are mixed up at the part 5 and then delivered to a transmission line 7 connected to each TV picture receiver 6. A coin timer 8 is provided between the line 7 and the part 5, and an output terminal 8b and a power supply terminal 8c are connected to the antenna terminal of the receiver 6 and an AC cord respectively. Then a number selection switch terminal 9 is selected by the type of the coin detected at a discriminating part 13 of the timer 8. |
