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FACSIMILE SYSTEM AND METHOD

  • US 3,864,514 A
  • Filed: 10/24/1972
  • Issued: 02/04/1975
  • Est. Priority Date: 08/27/1962
  • Status: Expired due to Term
First Claim
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1. Facsimile apparatus for transmitting and recording full-frame video picture information comprising in combination:

  • a television camera, means for positioning a document containing a pictorial representation of information to be transmitted to a location remote from said camera, in the scanning field of said camera, said camera having a reading electron beam and deflection control circuits for causing the reading-beam of the camera to rpedeterminately scan the image field presented to the camera, signal generating means for generating a sequence of deflection control signals and applying said signals to energize said deflection control circuits of said camera to cause said camera reading beam to full-frame scan its image field, control means for said signal generating means including a control switch, an input circuit energized by closing said control switch for initiating operation of said signal generating means to generate and apply the signals generated thereby to said deflection control circuits whereby said reading beam is caused to full-frame scan the complete image field presented to the camera and to terminate the scanning action of said reading beam when the complete image field has been scanned thereby, means including said reading beam for generating a composite video picture signal on the output of said camera including separable picture and synchronizing signal elements, a receiving station, means for effecting a communication link between the output of said camera and said receiving station, receiving means at said receiving station operable for receiving the signals generated by said transmitting means, and including a video receiver having a cathode ray tube and write-beam generating means for generating an image on a display screen of said tube, horizontal and vertical deflection control means for the writebeam of said receiving station cathode ray tube connected to receive signals from said receiving means, means at said receiving station for separating said synchronizing signal elements from the picture signal elements from each composite video picture signal received thereby and applying said synchronizing elements to said horizontal and vertical deflection control means for said write-beam of said receiving station cathode ray tube and for simultaneously applying the separated picture signal elements to intensity modulate said write-beam of said cathode ray tube to cause said beam to full-frame scan and generate an image on the display screen of said tube which image is representative of the document scanned by said television camera, relay means connected to said receiving means of said receiving station and responsive to the code signal generated when said control switch is closed for conditioning said receiving means of said receiving station to receive signals generated by said sending station transmitting means, means optically coupled to said display screen of said receiving station cathode ray tube for generating a hard copy reproduction of images generated by said display screen, and means at said receiving station connected to said receiving means and responsive to the control signal received from said sending station for controlling the operation of said hard copy generating means to generate a hard copy print of the image displayed on the display screen of said cathode ray tube.

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