| 摘要 |
PURPOSE:To attain the information of start of a broadcast in a short time by switching forcibly a channel to a communication broadcast channel when an own terminal group number and a designated group number are coincident. CONSTITUTION:A broadcast 100 and a terminal device 500 are tied via a transmission line 400. In inputting the command of start of the communication broadcast for a group to a center CPU110, the CPU110 detects the command, the group number and the channel number are designated to all terminal devices 500 so as to attain the notice of a group broadcast start. When the terminal control section 514 of a device 500 receives the notice from the CPU110 and the group number stored in the own terminal device and said group number are coincident, it is discriminated as the start of the communication broadcast to the group to which the own terminal device belongs, the section 514 controls an electronic tuner 512 and switches the output of a receiver 530 forcibly to the designated channel. |
