Patent ID: 6493390
Filing Date: 2002-12-10
Classification: H04N

Abstract:
A motion compensation image encoding device comprising:first encoding means for encoding motion prediction error information corresponding to a difference between an image signal of a current frame and a motion compensated output of an image signal of a reference frame preceding the current frame, obtained by motion-compensation by the use of each motion vector generated by a motion vector generator; and second encoding means comprising: auxiliary first means for obtaining a difference vector corresponding to a difference between said motion vector and an updated motion vector of an already encoded reference pixel block located near a current pixel block to be encoded in said current frame, auxiliary second means for obtaining the number of first generated bits, which is estimated from the magnitude of a motion prediction error contained in said motion prediction error information, auxiliary third means for obtaining a detected output resulting from evaluation of said difference vector so as to obtain the minimum step size for encoding said current pixel block, through the use of the number of first generated bits and a number of second generated bits of said difference vector, and auxiliary forth means for encoding said detected output.