Patent ID: 7991773

Claim:
A method of reproducing original data stored on an optical disc and additional data stored in an external source, the method comprising: downloading the additional data from the external source, the additional data including an additional clip and an additional playlist, the additional clip including an additional data stream, and the additional playlist for managing a reproduction of the additional clip; storing the additional data in a separate local storage of a reproducing apparatus for the optical disc; reading the original data from the optical disc, the original data including an original clip and an original playlist for managing a reproduction of the original clip, the original clip including an original data stream; reading the additional data from the local storage; combining the original data and the additional data based on link information to create a data structure for managing reproduction of the original clip and the additional clip, the link information indicating a link between the original playlist and the additional playlist by file name information, the data structure including a playlist for managing reproduction of the original clip and the additional clip, the playlist for managing reproduction of the original clip and the additional clip including at least one playitem designating a playing interval for the original clip and the additional clip, the playitem including a table listing packet identifications (PIDs) of the original and additional data streams in the original clip and the additional clip to permit selection of any one of the original and additional data streams during the playing interval; and reproducing the original clip and the additional clip based on the data structure.