INTERFRAME PREDICTION PROCESSOR WITH ADDRESS MANAGEMENT MECHANISM FOR MOTION VECTOR STORAGE

A device for processing variable-size macroblocks to achieve high-speed interframe prediction. A predictor calculator determines a motion vector predictor (MVP) for a current macroblock from motion vectors of other macroblocks adjacent to the current macroblock. To achieve this, the predictor calculator specifies adjacent macroblocks to an address calculator. The address calculator calculates a vector memory address for each specified adjacent macroblock, based on the block size of that specified macroblock. The predictor calculator reads out motion vectors from the received addresses and determines MVP for the current macroblock.