| 摘要 |
A transmission apparatus which alleviates, compared to conventional apparatuses, a processing burden such as transmission position management for terminals, which is required for video data distribution in a video-on-demand system distributing video data according to requests from user-side terminals. A transmission apparatus 100 uses an accumulation buffer control subunit 105 and a user buffer control subunit 106 to manage an accumulation buffer 102 of the transmission apparatus and a user buffer 153 of a playback apparatus. Upon receipt of a video data transmission request from the playback apparatus 150 , the transmission apparatus 100 determines an accumulation buffer to be assigned to the playback apparatus. If a plurality of playback apparatuses are using the same accumulation buffer, amounts of data transmitted to the playback apparatuses are controlled while referencing user buffers 153 of the playback apparatuses, such that transmission positions of video data transmitted to the playback apparatuses are aligned.
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