APPARATUS FOR CALCULATING ABSOLUTE DIFFERENCE VALUE, AND MOTION PREDICTION APPARATUS AND MOTION PICTURE ENCODING APPARATUS UTILIZING THE CALCULATED ABSOLUTE DIFFERENCE VALUE

摘要

An apparatus calculates an absolute difference value, which facilitates an efficient structure of an SAD calculating unit having a tree-like structure, and a motion estimation apparatus and a motion picture encoding apparatus that use the apparatus that calculates the absolute difference value. By performing calculations after inputting carry-outs output from a plurality of pseudo absolute difference calculating units to adders in an adder tree, the number of adders necessary for each absolute difference value calculating unit may be reduced. <IMAGE>