Patent ID: 8509593

Claim:
A playback apparatus for executing playback of a subtitle stream recorded on a recording medium in synchronization with a video stream, the recording medium having subtitle streams and PlayList information, the PlayList information including playback section information and a display method flag, the playback section information defining a playback section by using information indicating an IN time that indicates a playback start point and an OUT time that indicates a playback end point on a playback time axis of the video stream, the playback section information including a first stream information table, the display method flag indicating whether stereoscopic display of subtitles is valid in the playback section, the first stream information table specifying a monoscopic subtitle stream to be used for presenting monoscopic display of subtitles in the playback section, if the display method flag indicates that stereoscopic display of subtitles is valid, the playlist information further including a second stream information table, the second stream information table specifying a left-view subtitle stream and a right-view subtitle stream used for presenting stereoscopic display of subtitles in the playback section, the playback apparatus comprising: a configuration storage operable to store configuration information of the playback apparatus; an acquirer operable to acquire, from a display connected to the playback apparatus, information indicating whether the display is capable of stereoscopic display, a judger operable to judge whether the configuration information indicates that the playback apparatus is set to enable stereoscopic display of subtitles, and whether the information acquired by the acquirer indicates that the display is capable of stereoscopic display, a selector operable to: select the left-view subtitle stream and the right-view subtitle stream specified by the second stream information table as the subtitle streams to be played back in synchronization with the video stream, if the judger judges that: the playback apparatus is set to enable stereoscopic display of subtitles; the display is capable of stereoscopic display; and the display flag indicates that stereoscopic display of subtitles is valid in the playback section; and select the monoscopic subtitle stream specified by the first stream information table as the subtitle stream to be played back in synchronization with the video stream, if the judger judges that one of: the playback apparatus is not set to enable stereoscopic display of subtitles; and the display is not capable of stereoscopic display; and a player operable to execute playback of each selected subtitle stream in synchronization with the video stream.