Importance

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Abstract

To output audio even if video is frozen and to synchronize video with audio immediately after a release from freeze, in an MPEG decoder or the like. Freeze of motion picture data and continue output of it are performed using an output buffer area in a memory. I- and P-pictures in a data stream of motion pictures to be inputted in a freeze are decoded using a first output buffer area and a second output buffer area. Besides, a data stream of audio is decoded while keeping a synchronous relation ship with motion pictures. Since the decoded I- and P-pictures are stored in the first output buffer area and the second output buffer area even in the freeze, the video data can be outputted synchronizing with the audio data immediately after a release from freeze.

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First Claim