Patent ID: 8116613
Filing Date: 2012-02-14
Classification: G11B,H04N

Abstract:
1. A non-transitory recording medium on which playlist information is recorded, wherein; out of a first recording medium on which a primary stream is recorded and a second recording medium on which a secondary stream is recorded, the recording medium is the second recording medium, the playlist information indicates a playback path of the primary stream and the secondary stream, the secondary stream includes additional information to be played back in association with main video information included in the primary stream, the playlist information among the plurality of playitem information, one of two consecutive playitem information is previous playitem information and the other is current playitem information, and among the plurality of sub-playitem information, one of two consecutive sub-playitem information is previous sub-playitem information and the other is current sub-playitem information, the current playitem information includes: in_time indicating a playback start time of a primary playback section of the main video information; out_time indicating a playback end time of the primary playback section of the main video information; and connection information indicating a connection state at a boundary between the previous playitem information and the current playitem information, the current sub-playitem information includes: in_time indicating a playback start time of a secondary playback section of the additional information ; out_time indicating a playback end time of the secondary playback section of the additional information; a playitem ID specifying one of the playitem information with which the current sub-playitem information is played back in association; playitem synchronization PTS information indicating the in_time of the current sub-playitem information, on a playback time axis of the current playitem information specified by the playitem ID; and sub-connection information indicating a connection state at a boundary between the previous sub-playitem information and the current sub-playitem information, and in a case where the playitem information specified by the playitem ID is the current playitem information, and the connection information indicates seamless playback, the sub-connection information also indicates seamless playback, and the playitem synchronization PTS information of the sub_playitem information is equal to the in_time of the current playitem information, and the in_time of the current sub-playitem information is equal to the in_time of the current playitem information, wherein the in_time in the current playitem information refers to an initial one of video presentation units referred to by the current playitem information.