Recording medium, playback device, recording device, and recording method

A playback device for reading a main-view stream, a sub-view stream, and an extended stream from a recording medium, the main-view stream representing main views of stereoscopic video images, the sub-view stream representing sub-views of the stereoscopic video images, and for playing back the stereoscopic video images, playing back the main views as monoscopic video images, and using the extended stream in combination with the main-view stream,

• the main-view stream including a plurality of main-view extents, the sub-view stream including a plurality of sub-view extents, and the extended stream including a plurality of extended extents,
• the recording medium comprising:
• a shared section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents, the plurality of sub-view extents, and the plurality of extended extents;
• a stereoscopic video specific section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents and the plurality of sub-view extents;
• a monoscopic video specific section located adjacent to the stereoscopic video specific section and including a continuous arrangement of a copy of the main-view extent arranged in the stereoscopic video specific section;
• and
• an extended data specific section located immediately before a continuous arrangement of the stereoscopic video specific section and the monoscopic video specific section and including one of the plurality of extended extents that is to be used in combination with the copy of the main-view extent arranged in the monoscopic video specific section,
• the playback device comprising:
• a read unit configured to read data from the recording medium;
• a switching unit configured to extract the main-view stream, the sub-view stream, and the extended stream from the data read by the read unit;
• a first read buffer for storing the main-view stream extracted by the switching unit;
• a second read buffer for storing the sub-view stream extracted by the switching unit;
• a third read buffer for storing the extended stream extracted by the switching unit;
• and
• a decoding unit configured to read and decode the main-view stream from the first read buffer, the sub-view stream from the second read buffer, and the extended stream from the third read buffer,
• the read unit
• accessing the shared section when the stereoscopic video images are played back, when the main views are played back as monoscopic video images, and when the extended stream is used in combination with the main-view stream,
• accessing the stereoscopic video specific section during playback of the stereoscopic video images, next to the shared section immediately before performing a long jump, or ahead of the shared section immediately after performing a long jump,
• accessing the monoscopic video specific section during playback of the monoscopic video images, next to the shared section immediately before performing a long jump, or ahead of the shared section immediately after performing a long jump, and
• accessing the extended data specific section and the monoscopic video specific section when reading the extended stream along with the main-view stream, immediately before performing a long jump, or ahead of the shared section immediately after performing a long jump.

A recording device for recording a main-view stream, a sub-view stream, and an extended stream on a recording medium, the recording device comprising:

• an encoding unit configured to encode main views of stereoscopic video images into a main-view video stream, sub-views of the stereoscopic video images into a sub-view video stream, and extended data to be used in combination with the main-view video stream;
• a multiplexing unit configured to multiplex the main-view video stream into the main-view stream, the sub-view video stream into the sub-view stream, and the extended data into the extended stream, and to divide the main-view stream into a plurality of main-view extents, the sub-view stream into a plurality of sub-view extents, and the extended stream into a plurality of extended extents, and to determine an arrangement of extents on the recording medium;
• and
• a write unit configured to write the plurality of main-view extents, the plurality of sub-view extents, and the plurality of extended extents onto the recording medium in accordance with the arrangement of extents determined by the multiplexing unit,
• the multiplexing unit configured to design a shared section, a stereoscopic video specific section, a monoscopic video specific section, and an extended data specific section on the recording medium,
• a shared section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents, the plurality of sub-view extents, and the plurality of extended extents;
• a stereoscopic video specific section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents and the plurality of sub-view extents;
• a monoscopic video specific section located adjacent to the stereoscopic video specific section and including a continuous arrangement of a copy of the main-view extent arranged in the stereoscopic video specific section;
• and
• an extended data specific section located immediately before a continuous arrangement of the stereoscopic video specific section and the monoscopic video specific section and including one of the plurality of extended extents that is to be used in combination with the copy of the main-view extent arranged in the monoscopic video specific section,
• so that the design of the shared, stereoscopic video specific, monoscopic video specific, and extended data specific sections causes a playback device:
• to access the shared section when playing back the stereoscopic video images, when playing back the main views as monoscopic video images, and when using the extended stream in combination with the main-view stream;
• to access the stereoscopic video specific section during playback of the stereoscopic video images, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump;
• to access the monoscopic video specific section during playback of the monoscopic video images, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump;
• and
• to access the extended data specific section and the monoscopic video specific section when reading the extended stream along with the main-view stream, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump.

A method for recording a main-view stream, a sub-view stream, and an extended stream on a recording medium, the method comprising the steps of:

• encoding main views of stereoscopic video images into a main-view video stream, sub-views of the stereoscopic video images into a sub-view video stream, and extended data to be used in combination with the main-view video stream;
• multiplexing the main-view video stream into the main-view stream, the sub-view video stream into the sub-view stream, and the extended data into the extended stream;
• dividing the main-view stream into a plurality of main-view extents, the sub-view stream into a plurality of sub-view extents, and the extended stream into a plurality of extended extents, and determining an arrangement of extents on the recording medium;
• and
• writing the plurality of main-view extents, the plurality of sub-view extents, and the plurality of extended extents onto the recording medium in accordance with the arrangement of extents determined,
• the arrangement of extents determined including a shared section, a stereoscopic video specific section, a monoscopic video specific section, and an extended data specific section:
• a shared section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents, the plurality of sub-view extents, and the plurality of extended extents;
• a stereoscopic video specific section including a continuous, interleaved arrangement of extents having one each of the plurality of main-view extents and the plurality of sub-view extents;
• a monoscopic video specific section located adjacent to the stereoscopic video specific section and including a continuous arrangement of a copy of the main-view extent arranged in the stereoscopic video specific section;
• and
• an extended data specific section located immediately before a continuous arrangement of the stereoscopic video specific section and the monoscopic video specific section and including one of the plurality of extended extents that is to be used in combination with the copy of the main-view extent arranged in the monoscopic video specific section,
• so that the design of the shared, stereoscopic video specific, monoscopic video specific, and extended data specific sections causes a playback device:
• to access the shared section when playing back the stereoscopic video images, when playing back the main views as monoscopic video images, and when using the extended stream in combination with the main-view stream;
• to access the stereoscopic video specific section during playback of the stereoscopic video images, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump;
• to access the monoscopic video specific section during playback of the monoscopic video images, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump;
• and
• to access the extended data specific section and the monoscopic video specific section when reading the extended stream along with the main-view stream, next to the shared section immediately before start of a long jump, or ahead of the shared section immediately after completion of a long jump.