| 摘要 |
a movement compensation area number counting part(40) which judges the macro block which is movement-compensated and the macro block which is not movement-compensated on the basis of the average absolute error rate between the present source signal and the recovered signal stored in a frame memory(118), and counts the number of the movement compensation macro blocks and the number of the non-movement compensation macro blocks; and a quantization level determining part(50) which provides a second quantization level as a signal controlling the quantization level of a quantizer(104) by outputting the second quantization level to the quantizer(104).
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