IMAGE DECODING APPARATUS, INTEGRATED CIRCUIT, IMAGE DECODING METHOD, AND IMAGE DECODING SYSTEM

摘要

When a motion vector of a co-located macroblock corresponding to a w-th macroblock is necessary for calculating the motion vector of the w-th macroblock, a transfer unit (130A) transfers the motion vector of the co-located macroblock from an external memory (200) to a buffer (124A). Further, when the motion vector of the co-located macroblock corresponding to the w-th macroblock is not necessary for calculating the motion vector of the w-th macroblock, the transfer unit (130A) does not transfer the motion vector of the co-located macroblock corresponding to the w-th macroblock from the external memory (200) to the buffer (124A).