SIGNAL PROCESSING METHOD FOR MOVING IMAGE INFORMATION AND DEVICE FOR THE METHOD

摘要

PROBLEM TO BE SOLVED: To ensure high image quality and to attain high speed processing while reducing power consumption. SOLUTION: In the signal processing method for moving image information for motion compensation prediction between two images apart in time series, the process of a block matching in an unretrieved area after a difference absolute sum of pixels being an index for detecting a motion vector reaches at first a prescribed threshold value is forcibly terminated. Thus, possible excess signal processing is excluded in a range of keeping sufficiently high image quality and the power consumption of a difference absolute sum array 8 calculating a difference absolute sum is realized. The difference absolute sum array 8 is provided with a comparator circuit 9 that sequentially compares the calculated difference absolute sum with a prescribed threshold level and the comparator circuit 9 provides a prescribed output when the difference absolute sum reaches the prescribed threshold level.