| 摘要 |
<p>PURPOSE: To improve the operability of the receiver by changing the transmission frequency of the transmitting circuit of a VTR into the receivable frequency of a remote controller in response to the reception frequency of the FM voice signal of a remote control transmitter. CONSTITUTION: The reproduced aural signals, etc., of a video tape undergo the FM modulation through an FM transmitting circuit 13 and are transmitted to the outside through a transmission antenna 14. This FM signal is received by an FM receiving circuit 22 of a remote controller 2 and demodulated there. Then the demodulated FM signal is outputted from a voice output circuit 23 via a speaker, etc. When a user changes the FM reception frequency of the circuit 22 where its reception frequency is set by the command of a remote control microcomputer 25, the changed frequency is inputted by means of a frequency input key 24. Thus the microcomputer 25 changes the reception frequency of the circuit 22 and also transmits this change information through a remote control transmission part 26. A photodetection part 12 of a VTR main body 1 receives the change information (infrared signal), and a main microcomputer 11 changes the transmission frequency of the circuit 13.</p> |
