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TELEVISION CAMERA GEOMETRIC DISTORTION CORRECTION SYSTEM

  • US 3,757,161 A
  • Filed: 09/03/1970
  • Issued: 09/04/1973
  • Est. Priority Date: 09/03/1970
  • Status: Expired due to Term
First Claim
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1. A method for correcting geometric distortion in the camera tube of a television camera comprising the steps of generating sawtooth wave form signals at the horizontal and vertical repetition rates, generating parabolic wave form signals at the horizontal and vertical repetition rates, applying said sawtooth and parabolic wave form signals to at least one of the grids of said camera tube and adjusting the amplitudes and polarities of the applied parabolic and sawtooth wave forms to substantially correct for the geometric distortion of said camera tube.

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