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CABLELESS ACOUSTICALLY LINKED UNDERWATER TELEVISION SYSTEM

  • US 3,688,029 A
  • Filed: 09/23/1968
  • Issued: 08/29/1972
  • Est. Priority Date: 09/23/1968
  • Status: Expired due to Term
First Claim
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1. An acoustically linked television system, comprising:

  • a video camera for recording a camera scene, said video camera including a vidicon tube having a camera sequencer for controlling beam chopping, vertical and horizontal sweep generators, and a frame time decoder for controlling the vertical and horizontal sweeps to produce a camera scene having a predetermined number of lines, said camera sequencer including a scan controller, an oscillator, a one-shot multivibrator receiving the output from said oscillator, and an OR gate connected to receive the output from said one-shot multivibrator and supplying an output to said blanking circuit, and wherein said frame time decoder includes horizontal and vertical selector switches for selecting one of a plurality of lines of a camera scene, signal processing means connected to receive the output from said vidicon tube and provide a gated video output, and vidicon tube control means for controlling sweep, said control means including a blanking circuit for chopping the input to said vidicon tube to disrupt the vidicon beam in a predetermined pattern;

    slow scan camera readout means for producing video data indicative of said camera scene at a predetermined rate less than real time;

    modulating means for receiving said video data from said slow scan readout means and producing modulated output signals;

    first trAnsducer means connected with said modulating means for converting said modulated output signals into acoustic energy and transmitting the same;

    second transducer means for receiving said transmitted acoustic energy and substantially reconverting the same to said modulated output signals;

    demodulating means for receiving said modulated output signals from said second transducer means and substantially reproducing said video data therefrom; and

    utilization means for receiving said video data and substantially reproducing said camera scene.

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