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Video encoder and portable radio terminal device

  • US 20060215763A1
  • Filed: 03/25/2005
  • Published: 09/28/2006
  • Est. Priority Date: 03/23/2005
  • Status: Active Grant
First Claim
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1. A video encoder which codes a motion picture signal, the video encoder comprising:

  • means for calculating each primary evaluative value of a plurality of primary evaluative values corresponding respectively to a plurality of 4.times. 4-pixel intra-prediction modes with different prediction directions, for each of a plurality of 4.times. 4-pixel blocks, using the motion picture signal as a reference image signal. means for calculating each of a plurality of secondary evaluative values corresponding respectively to the 4×

    4 intra-prediction modes, by applying to the primary evaluative value, weight summing which uses an evaluation coefficient corresponding to a position of each of the 4.times. 4-pixel blocks;

    means for determining a coding prediction mode for each macro-block, using the secondary evaluative values; and

    means for coding the motion picture signal in accordance with the coding prediction mode.

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