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Digital video signal encoder and encoding method

  • US 5,903,673 A
  • Filed: 03/14/1997
  • Issued: 05/11/1999
  • Est. Priority Date: 03/14/1997
  • Status: Expired due to Term
First Claim
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1. A method for implementing conditional replenishment in encoding a motion video signal which includes two or more frames, each of which includes one or more pixel blocks which each include two or more sub-portions, the method comprising:

  • comparing each sub-portion of a first pixel block of a first frame of the motion video signal to a corresponding sub-portion of a corresponding pixel block of a second frame of the motion video signal to form a corresponding sub-portion distortion value;

    comparing the greatest of the sub-portion distortion values of the pixel block to a predetermined threshold; and

    encoding the pixel block only if the greatest of the sub-portion distortion values is greater than the predetermined value.

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