Method of coding and decoding motion vector and apparatus therefor, and method of coding and decoding picture signal and apparatus therefor

  • US 6,040,863 A
  • Filed: 12/18/1998
  • Issued: 03/21/2000
  • Est. Priority Date: 03/24/1993
  • Status: Expired due to Term
First Claim
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1. A picture signal coding method comprising the step of:

  • coding an input picture signal every macroblock on the basis of a plurality of modes,whereby when picture coding type in the plurality of modes is P picture and picture structure in the plurality of modes is frame structure,the method further comprises the steps of;

    judging, every coded macroblock, whether or not the following conditions are satisfied;

    (i) predictive error signal is zero, (ii) motion vector is zero, (iii) motion compensation mode in the plurality of modes is the forward prediction, and (iv) prediction type in the plurality of modes is frame predictions; and

    processing the coded macroblock as a skipped block only when said conditions are satisfied.

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