IMAGE PROCESSOR, IMAGE PROCESSING METHOD AND PROVIDING MEDIUM

PROBLEM TO BE SOLVED: To quickly generate an address in the case of reading a prediction macro block from a frame memory. SOLUTION: A controller 14 calculates an address used to read a prediction macro block from a frame memory 5 for each motion compensation prediction mode and reference memories 8-1-8-n store the address in advance. Addresses corresponding to a motion vector fed from a variable length decoding section 31 are read from the reference memories 8-1-8-n and a switch 9 selects a prescribed address among them corresponding to a motion compensation prediction mode outputted from the variable length decoding section 31 and the selected address is fed to the frame memory 5. The frame memory 5 reads data of a predicted macro block stored in the received address and allows a prediction buffer 7b of a cache memory 7 to store the data. The predicted macro block data written in the prediction buffer 7b and data of a target macro block transformed by an inverse DCT transform section 38 are summed and stored in a slice output buffer 7a.