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    • 4. 发明专利
    • UNMANNED CARRIER SIGNAL TRANSMISSION SYSTEM
    • JPS61159888A
    • 1986-07-19
    • JP68385
    • 1985-01-07
    • NEC CORP
    • WATANABE TAKAYUKIOKADA MASAKAZU
    • H04N7/18H04Q9/00
    • PURPOSE:To mount an ITV camera on an unmanned carrier car and to transmit video signals with radio by performing the wireless transmission of video and monitor signals from a vehicle to a ground side and also performing the wireless transmission of control signals from the ground side to the vehicle. CONSTITUTION:The video signals picked up by a ITV camera 3 provided on the vehicle is transmitted to the ground side by a video channel transmitter of a radio 1 via a nondirectional antenna 2. These signals are received at the ground side via the nondirectional antenna 14 by the video channel of a radio 13 so as to be displayed on a monitor television 15. When desired by the surface side to turn the ITV camera 3 on board the vehicle or to make the remote control of a zoom lens 5, an push-buttom is pushed according to the request from a surface side camera operating part 16, the control signals are transmitted from a camera control part 17 so that electrical waves are transmitted from the antenna 2 through the first sound channel transmitter of the wireless machine 13. These waved are received at the vehicle side by antenna 2 with the first sound channel of the radio and outputted by the camera control part 6 to an electrically driven universal head 4 or electrically driven zoom lens 5 to perform an remote operation.