| 摘要 |
A technique is provided to decode a video stream encoded with motion-compensated prediction techniques, at a high speed and with a low power consumption. An area setting circuit determines a read area on a reference picture so as to contain areas pointed by a plurality of motion vectors extracted from a video stream. A reference picture reading circuit reads out, with a continuous access sequence to a memory, data of the reference picture corresponding to the read area determined by the area setting circuit, wherein the reference picture is a picture previously decoded and stored in the memory. A predicted picture generating circuit produces a predicted picture based on the data corresponding to the read area which has been read by the reference picture reading circuit. A decoding circuit reproduces an original picture by using the predicted picture produced by the predicted picture generating circuit.
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