Patent ID: 8503522

Claim:
An adaptive overlapped block motion compensation apparatus employing adaptive weights comprising: an R BMC (x,y) calculator for performing a calculation of a residual signal R BMC (x,y) in a block motion estimation; a D N (x,y) calculator for performing a calculation of a differential pixel value D N (x,y) between a motion compensated block generated by a motion vector of an adjacent block and a currently motion compensated block through a currently estimated motion vector; an additional information updating/setting unit for updating and setting additional information for performing an adaptive overlapped block motion compensation based on the R BMC (x,y) and the D N (x,y); and an adaptive overlapped block motion compensator for performing the adaptive overlapped block motion compensation for respective pixels in certain pixel units based on the additional information, progressing the adaptive overlapped block motion compensation over to subsequent pixels as long as an absolute value of the R BMC (x,y) is smaller than or equal to the additional information, and if the absolute value of the R BMC (x,y) is greater than the additional information, calculating a residual signal R OBMC (x,y) with an H N (x,y) selectively signed so that an absolute value of the R OBMC (x,y) in an overlapped block motion reconstruction is smaller than the absolute value of the R BMC (x,y), wherein HN(x,y) represents a weight located at (x,y).