Abstract: To store TS packet in an external memory connected via an external IF unit at the time shift reproduction time, a buffer for storage is provided at a previous stage and a buffer for reproduction is provided at a subsequent stage. When the data storage in the external memory runs out as the time shift reproduction proceeds, a time shift data managing unit executes a temporary time shift by the buffer for storage and the buffer for reproduction capable of reading and writing at a higher speed than the external memory without mediation of the external memory and then the time shift reproduction mode is changed to the general reproduction mode by a demultiplex mode control unit.

Abstract: To store TS packet in an external memory connected via an external IF unit at the time shift reproduction time, a buffer for storage is provided at a previous stage and a buffer for reproduction is provided at a subsequent stage. When the data storage in the external memory runs out as the time shift reproduction proceeds, a time shift data managing unit executes a temporary time shift by the buffer for storage and the buffer for reproduction capable of reading and writing at a higher speed than the external memory without mediation of the external memory and then the time shift reproduction mode is changed to the general reproduction mode by a demultiplex mode control unit.

Abstract: A contents reproducing apparatus includes a receiving unit configured to receive a first packet having an ES in which encoded video or audio data is stored, and a second packet having the ES and a PCR, a counter configured to count a STC and output the counted STC as a STC value, a buffer configured to store the first and second packets in an order of reception in a time shift reproduction mode and a time shift storage mode, a correcting unit configured to correct the PCR included in the second packet received by the receiving unit by using the STC value and output the corrected PCR, in the time shift reproduction mode, and a control unit configured to control the STC in accordance with the corrected PCR and the STC value, in the time shift reproduction mode.

Abstract: Error correcting section holds PTS(n?1) and DTS(n?1) of the frame immediately preceding the current frame and the most recent CPTS as determined to be correct in the past. The time stamp of the current frame is determined to be incorrect if (1) CPTS>PTS(n) which is the current frame or (2) CPTS<PTS(n) and greater than the time interval of time information B_TS(n)?B_TS(n?1) plus a reference time (e.g., the multiple of the standard frame interval 33 msec of moving images using 30 frames per second). If the PTS(n) of the current frame is correct, it is used as reproduction timing and updates the CPTS, using the PTS(n). If, on the other hand, the PTS(n) of the current frame is incorrect, it is not used and the time obtained by adding the CPTS and B_TS(n)?B_TS(n?1) is used as corrected PTS(n).

Abstract: In a moving image encoding apparatus of this invention, a generated bit amount extracting section (21) counts generated bits of variable-length-encoded data in units of macroblocks, and a reference generated bit count is set in a parameter value control section (22) as an update condition for a parameter value in each block. The boundary value of the parameter value is set in an intra/inter determination section (23) as a criterion for selection of the intra-encoding mode. In the inter-frame encoding mode, the parameter value control section (22) updates the parameter value of a block in which the generated bit count value of encoded data obtained by the generated bit amount extracting section (21) exceeds a reference value. The intra/inter determination section (23) determines that the influence of a data error is large in a block in which the parameter value is continuously updated and exceeds the boundary value, and switches the current mode to the intra-encoding mode to perform refresh operation.

Abstract: In a moving image encoding apparatus of this invention, a generated bit amount extracting section (21) counts generated bits of variable-length-encoded data in units of macroblocks, and a reference generated bit count is set in a parameter value control section (22) as an update condition for a parameter value in each block. The boundary value of the parameter value is set in an intra/inter determination section (23) as a criterion for selection of the intra-encoding mode. In the inter-frame encoding mode, the parameter value control section (22) updates the parameter value of a block in which the generated bit count value of encoded data obtained by the generated bit amount extracting section (21) exceeds a reference value. The intra/inter determination section (23) determines that the influence of a data error is large in a block in which the parameter value is continuously updated and exceeds the boundary value, and switches the current mode to the intra-encoding mode to perform refresh operation.

Abstract: Error correcting section holds PTS(n−1) and DTS(n−1) of the frame immediately preceding the current frame and the most recent CPTS as determined to be correct in the past. The time stamp of the current frame is determined to be incorrect if (1) CPTS>PTS(n) which is the current frame or (2) CPTS<PTS(n) and greater than the time interval of time information B_TS(n)−B_TS(n−1) plus a reference time (e.g., the multiple of the standard frame interval 33 msec of moving images using 30 frames per second). If the PTS(n) of the current frame is correct, it is used as reproduction timing and updates the CPTS, using the PTS(n). If, on the other hand, the PTS(n) of the current frame is incorrect, it is not used and the time obtained by adding the CPTS and B_TS(n)−B_TS(n−1) is used as corrected PTS(n).