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Video timing system and method

  • US 6,636,269 B1
  • Filed: 08/18/1999
  • Issued: 10/21/2003
  • Est. Priority Date: 08/18/1999
  • Status: Expired due to Term
First Claim
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1. A method for producing an output video stream from an input video stream, the method comprising:

  • receiving from the input video stream an input video field in a video buffer, selecting a predetermined point in the input video field;

    transmitting at least a portion of an output video field from the video buffer to the output video stream;

    selecting a predetermined point in the output video field that corresponds with the predetermined point selected in the input video field;

    measuring a time interval between the selected predetermined points;

    determining whether the time interval is outside a predetermined range; and

    whenever it is determined that the time interval is outside the predetermined range, altering timing of the output video stream to compensate by skipping or repeating a portion of the output streain, such that the measured interval will thereafter fall within the predetermined range.

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