MOVING IMAGE DECODER AND MOVING IMAGE DECODING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a moving image decoder that can display plural channels with high image quality while suppressing increase in the circuit scale of the decoder and the occupied capacity of a memory. SOLUTION: A header information acquisition section 114 extracts information, such as a dot size in longitudinal and lateral directions of an image and a frame rate from a sequence header which are included in an MPEG video stream. A total processing amount estimate/reproduction system discrimination section 116 receives a channel priority decided for each display mode and an output of the header information acquisition section 114 for estimating the total processed amount and to discriminate each channel reproduction system. An MPEG decoder 118 receives code inputs of CH1-CH4 in time division via the header information acquisition section 114 and decodes an image code in each channel, depending on a discrimination signal outputted from the total processing amount estimate/reproduction system discrimination section 116.