Method and apparatus for reproducing data streams

摘要

In one embodiment, at least one supplementary data stream related to a main data stream is downloaded. A stream table defining reproducible data streams, in which a reproducing apparatus selects at least one data stream to be reproduced during presentation of a playitem and a subplayitem, is checked. The playitem manages reproduction of the main data stream and the subplayitem manages reproduction of the downloaded supplementary data stream. The main and downloaded supplementary data streams defined in the stream table are reproduced.