| 摘要 |
PURPOSE:To automatically receive the broadcasting of a roadside zone by providing a tuner dedicated to receiving the broadcasting of the roadeside zone and switching it to the reception of the broadcasting of the roadside zone with the aid of the control of a control microcomputer when the receiving level thereof becomes equal to or exceeds a prescribed level. CONSTITUTION:A switch 5a executes the switching of connection between the outputs of an AM/FM stereo tuner 2, a cassette tape player 3 and a CD player 4 and an power amplifier 7 at a first stage and executes the switching of the connection between the outputs of the tuner 2 and the tuner 9 dedicated to receiving the broadcasting of the roadside zone and the amplifier 7 at a second stage. Such switching is executed by the control of the microcomputer for controlling 6a. By the switching with the aid of a operation key at the first stage, the tuner 2 is connected to the amplifier 7. Then, since the receiving level of the dedicated tuner 9 becomes equal to or exceeds the prescribed level when an automobile enters the broadcasting area of the roadside zone, the switching on the second stage is executed. Thus, the broadcasting of the roadside zone is automatically received. |
