| 摘要 |
PURPOSE:To improve operability and maneuvability at the time of video camera photographing and to save wide energy of the battery by transmitting wirelessly a control signal which starts and stops VTR in addition to an RF modulating signal of the video signal and the audio signal. CONSTITUTION:When a push button switch SW is pushed, a relay RL is excited, an electric power source +B contact S for B supply is on, and the power is supplied to the first and second transmitting circuits and video camera 1. In the condition, a video modulating signal and an audio modulating signal outputted from an RF modulating circuit 4 are subsequently amplified by an amplifier 5, and after that, wireless transmission is executed from a common antenna 6. On the other hand, a high frequency signal modulated by an output of a modulating wave oscillating circuit 7 is supplied a multiplying circuit 9 and a power amplifier 10 to an antenna 11. At a VTR side, an RF signal sent from the first transmitting circuit is received, the video signal and the audio signal are reproduced, a VTR remote operation signal sent from the second transmitting circuit is demodulated and used as a VTR start signal.
|
