Patent ID: 8121463

Claim:
A non-transitory recording medium used for storing data, comprising: a digital stream generated by multiplexing a video stream and a graphics stream, wherein: the graphics stream includes a plurality of display sets each of which is used for a graphics display; the display set includes a PCS (Presentation Composition Segment) and an ODS (Object Definition Segment) for defining a graphics object; the PCS has time information, the time information designating an active period of the PCS in the display set on a reproduction time axis of the video stream; each segment is contained in a packet; the time information includes a decoding time stamp and a presentation time stamp which are written in a packet; the graphics stream is a presentation graphics stream which is intended to synchronize with a moving picture represented by the video stream or an interactive graphics stream which is intended to produce an interactive display; an overlap exists in active periods of composition segments in display sets if the graphics stream is the presentation graphics stream, but does not exist in active periods of composition segments in display sets if the graphics stream is the interactive graphics stream; PTS(DSn[ICS]), which is a presentation time stamp of a packet containing an ICS (Interactive Composition Segment) in a n-th display set DSn, designates an end time of an active period of the ICS; DTS(DSn+1[ICS]), which is a decoding time stamp of a packet containing an ICS in an immediately succeeding display set DSn+1, designates a start time of an active period of the ICS; and PTS(DSn[ICS]) and DTS(DSn+1[ICS]) satisfy a relation PTS( DSn [ICS])≦DTS( DSn+ 1[ICS]).