| 摘要 |
A comparative time of a first data stream accumulated in a buffer memory is compared with a comparative time of a second data stream (S113). If the comparative time of the first data stream is earlier, the first data stream is multiplexed (S114). On the other hand, if the comparative time of the first data stream is later, the first data stream is not immediately multiplexed. When a data stream is accumulated in a buffer memory, the comparative time of the data stream is a multiplexing reference time indicating the timing of reproduction of the data stream, which is obtained based on time information contained in the data stream or the like (S116). On the other hand, when a data stream is not accumulated in a buffer memory, a multiplexing predicted time which is predicted as the multiplexing reference time of a data stream which is to be next accumulated is used as the comparative time of the data stream (S117). As a result, data streams which should be simultaneously reproduced can be easily sorted and multiplexed even when smaller-size buffers are employed.
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