A prediction module includes a computation control unit and first to sixth processing units. The computation control unit arranges the pixels of a reference block outputted by a frame buffer appropriately according to data decoded by an entropy decoder into first and second pixel signals, and outputs the same to the first to sixth processing units in units of cycles. The processing units are controlled by the computation control unit to respectively complete corresponding computations in a cycle, and to use the computation results as values of first to sixth output signals to be correspondingly outputted in a next cycle. The computation control unit receives the first to sixth output signals, and computes the output signals so as to obtain pixel values of a macroblock to be predicted.