Information recording/reproducing system, information recording/reproducing apparatus and information recording/reproducing method

Information recording/reproducing apparatus comprising:

• data storage portion that stores an MPEG data stream constituted of one-grouped pictures of I2, B0, B1, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, and B13 in turn on B picture, P picture and I picture;
• control portion that controls the data storage portion to read the MPEG data stream constituted of one-grouped pictures of I2, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, B13, I2, B0, and B1 in turn on the B picture, the P picture and the I picture;
• and
• information recording/reproducing portion including a memory, said information recording/reproducing portion decoding the MPEG data stream constituted of one-grouped pictures read out of the data storage portion by the control portion to produce B pictures from any one of previous and next P picture and I picture and previous and next P pictures and to produce P pictures from any one of previous I picture and previous P picture, storing in the memory reproduced image data that is constituted of one-grouped pictures of I2, B3, B4, P5, B6, B7, P8, B9, B10, P11, B12, B13, P14, B0, and B1 in turn on the B picture, the P picture and the I picture, and controlling data-reading order out of the memory.

Information recording/reproducing method comprising the steps of:

• grouping an MPEG data stream constituted of pictures of I2, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, B13, I2, B0, and B1 in turn on the B picture, the P picture and the I picture as one group relative to the MPEG data stream constituted of one-grouped pictures of I2, B0, B1, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, and B13 in turn on B picture, P picture and I picture and recorded in this order;
• decoding the MPEG data stream constituted of one-grouped pictures to produce B pictures from any one of previous and next P picture and I picture and previous and next P pictures and to produce P pictures from any one of previous I picture and previous P picture;
• storing in a memory reproduced image data that is constituted of one-grouped pictures of I2, B3, B4, P5, B6, B7, P8, B9, B10, P11, B12, B13, P14, B0, and B1 in turn on the B picture, the P picture and the I picture;
• and
• controlling data-reading order out of the memory.

Information recording/reproducing system comprising:

• data storage means for storing an MPEG data stream constituted of one-grouped pictures of I2, B0, B1, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, and B13 in turn on B picture, P picture and I picture;
• control means for controlling the data storage device to read the MPEG data stream constituted of one-grouped pictures of I2, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, B13, I2, B0, and B1 in turn on the B picture, the P picture and the I picture;
• and
• information recording/reproducing means including a memory, said information recording/reproducing means decoding the MPEG data stream constituted of one-grouped pictures read out of the data storage means by the control means to produce B pictures from any one of previous and next P picture and I picture and previous and next P pictures and to produce P pictures from any one of previous I picture and previous P picture, storing in the memory reproduced image data that is constituted of one-grouped pictures of I2, B3, B4, P5, B6, B7, P8, B9, B10, P11, B12, B13, P14, B0, and B1 in turn on the B picture, the P picture and the I picture, and controlling data-reading order out of the memory.

Information recording/reproducing apparatus comprising:

• data storage means for storing an MPEG data stream constituted of one-grouped pictures of I2, B0, B1, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, and B13 in turn on B picture, P picture and I picture;
• control means for controlling the data storage means to read the MPEG data stream constituted of one-grouped pictures of I2, P5, B3, B4, P8, B6, B7, P11, B9, B10, P14, B12, B13, I2, B0, and B1 in turn on the B picture, the P picture and the I picture;
• and
• information recording/reproducing means including a memory, said information recording/reproducing means decoding the MPEG data stream constituted of one-grouped pictures read out of the data storage means by the control means to produce B pictures from any one of previous and next P picture and I picture and previous and next P pictures and to produce P pictures from any one of previous I picture and previous P picture, storing in the memory reproduced image data that is constituted of one-grouped pictures of I2, B3, B4, P5, B6, B7, P8, B9, B10, P11, B12, B13, P14, B0, and B1 in turn on the B picture, the P picture and the I picture, and controlling data-reading order out of the memory.