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US 8,509,593 B2Granted
Recording medium, playback apparatus, recording apparatus, playback method, recording method, and program
AssigneePanasonic Corporation
InventorsMasafumi Okubo, Tomokazu Kanamaru
Life of this patent
Estimating the term…
Abstract
A BD-ROM has recorded thereon: a plurality of subtitle streams each configured for playback in sync with a video stream; and PlayList information. The PlayList information includes PlayItem information and a display method flag. The PlayItem information defines a playback section with information indicating In_time and Out_time of a playback time axis of the video stream and includes a stream information table. The display method flag indicates whether or not control according to a subtitle display method is valid. The stream information table specifies to, a playback apparatus, one of the subtitle streams to be selected if the control according to the subtitle display method is valid.
Claims6
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.
20 more elements
A playback method for execution by a computer to playback 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, and
- the computer having a configuration storage storing configuration information of the computer,
- the playback method comprising:
- acquiring, from a display connected to the computer, information indicating whether the display is capable of stereoscopic display,
- judging whether the configuration information indicates that the computer is set to enable stereoscopic display of subtitles, and whether the information acquired in the acquiring indicates that the display is capable of stereoscopic display,
- selecting a left-view subtitle stream and a right-view subtitle stream specified by a second stream information table as the subtitle streams to be played back in synchronization with the video stream, if the judging judges that:
- the computer 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
- selecting 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 judging judges that one of:
- the computer is not set to enable stereoscopic display of subtitles;
- and
- the display is not capable of stereoscopic display;
- and
- executing playback of the selected subtitle streams in synchronization with the video stream.
18 more elements
A non-transitory computer-readable medium including a program comprising code operable to cause a computer to execute a playback method of playing back 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, and
- the computer having a configuration storage storing configuration information of the computer,
- the playback method comprising:
- acquiring, from a display connected to the computer, information indicating whether the display is capable of stereoscopic display,
- judging whether the configuration information indicates that the computer is set to enable stereoscopic display of subtitles, and whether the information acquired in the acquiring indicates that the display is capable of stereoscopic display,
- selecting a left-view subtitle stream and a right-view subtitle stream specified by a second stream information table as the subtitle streams to be played back in synchronization with the video stream, if the judging judges that:
- the computer 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
- selecting 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 judging judges that one of:
- the computer is not set to enable stereoscopic display of subtitles;
- and
- the display is not capable of stereoscopic display;
- and
- executing playback of the selected subtitle streams in synchronization with the video stream.
18 more elements
Dependencies are inferred from the claim text.