Recording medium, reproduction device, and recording device

A playback device for playing back a main-view stream, a sub-view stream, and an extended stream from a recording medium, wherein:

• the main-view stream contains a main-view video stream constituting main views of stereoscopic video images, and is divided into a plurality of main-view extents arranged on the recording medium;
• the sub-view stream contains a sub-view video stream constituting sub-views of the stereoscopic video images, and is divided into a plurality of sub-view extents arranged on the recording medium;
• the extended stream contains extended data to be used in combination with the main-view stream, and is divided into a plurality of extended extents arranged on the recording medium;
• and
• at least two each of the plurality of main-view extents and the plurality of sub-view extents are placed in a continuous, interleaved arrangement between an adjacent pair of the plurality of extended extents,
• 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 configured to store the main-view stream extracted by the switching unit;
• a second read buffer configured to store the sub-view stream extracted by the switching unit;
• a third read buffer configured to store 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, wherein
• when the stereoscopic video images are played back, the read unit reads the plurality of main-view extents and the plurality of sub-view extents from the recording medium, and jumps over recording areas of the plurality of extended extents,
• a capacity allocated to the first read buffer is larger than a data amount of portion of the main-view stream read by the decoding unit from the first read buffer during a period when the read unit jumps over the recording area of one of the plurality of extended extents, and
• a capacity allocated to the second read buffer is larger than a data amount of portion of the sub-view stream read by the decoding unit from the second read buffer during the period.

A recording device for recording a main-view stream, a sub-view stream, and an extended stream on a recording medium, 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 then determine an arrangement of the main-view, sub-view, and extended streams on the recording medium;
• and
• a write unit configured to write the main-view, sub-view, and extended streams onto the recording medium, wherein
• the multiplexing unit divides 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 then arranges the extents, and
• the multiplexing unit places at least two each of the plurality of main-view extents and the plurality of sub-view extents in a continuous, interleaved arrangement between an adjacent pair of the plurality of extended extents.