Abstract: The frame-memory control-section partitions a frame memory into a plurality of sectors and stores decoded video data of frames not used as predictive video in the frame memory. The frame-memory control-section writes a top-field data and a bottom-field data of the decoded video data into separate free sectors of the frame memory. In reading and displaying the decoded video data from the frame memory, the frame-memory control-section simultaneously releases the sector that stores the top-field data and the sector that stores the bottom-field data during the last display field period of the display video.

Abstract: The frame-memory control-section partitions a frame memory into a plurality of sectors and stores decoded video data of frames not used as predictive video in the frame memory. The frame-memory control-section writes a top-field data and a bottom-field data of the decoded video data into separate free sectors of the frame memory. In reading and displaying the decoded video data from the frame memory, the frame-memory control-section simultaneously releases the sector that stores the top-field data and the sector that stores the bottom-field data during the last display field period of the display video.

Abstract: In an MPEG picture processing apparatus, a for-reconstructed-picture data transfer for picture data relating to the decoding performed in a video decoder is performed between the video decoder and an SDRAM, and a second type data transfer for each second type of data is performed between a local buffer and the SDRAM. The for-reconstructed-picture data transfer is preferentially performed at a fixed data transfer quantity in an optimum transfer time-period of the picture data. To preferably perform the for-reconstructed-picture data transfer, a possible data transfer quantity of each second type of data is limited to a minimum value in the optimum transfer time-period of the picture data, and the limitation for the possible data transfer quantity is weak in a non-limited time-period other than the optimum transfer time-period of the picture data.

Abstract: In an MPEG picture processing apparatus, a for-reconstructed-picture data transfer for picture data relating to the decoding performed in a video decoder is performed between the video decoder and an SDRAM, and a second type data transfer for each second type of data is performed between a local buffer and the SDRAM. The for-reconstructed-picture data transfer is preferentially performed at a fixed data transfer quantity in an optimum transfer time-period of the picture data. To preferably perform the for-reconstructed-picture data transfer, a possible data transfer quantity of each second type of data is limited to a minimum value in the optimum transfer time-period of the picture data, and the limitation for the possible data transfer quantity is weak in a non-limited time-period other than the optimum transfer time-period of the picture data.