Patent ID: 8126317

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 PCS (Presentation Composition Segment), an ODS (Object Definition Segment) for defining a graphics object, and a WDS (Window Definition Segment); 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 WDS is information that specifies a position, a height, and a width of a window on a screen, the window being a rendering area in which the graphics display is to be composited based on the PCS in the display set before being overlaid on a moving picture represented by the video stream; PTS(DSn[PCS]), which is a presentation time stamp of a packet containing a PCS in a n-th display set DSn, designates an end time of an active period of the PCS in the display set DSn; PTS(DSn+1 [PCS]), which is a presentation time stamp of a packet containing a PCS in an immediately succeeding display set DSn+1, designates an end time of an active period of the PCS in the display set DSn+1; and when a total size of rendering areas of m windows defined by a WDS in the display set DSn is denoted by ∑ i = 1 m ⁢ ⁢ SIZE ⁢ ⁢ ( DSn ⁡ [ WDS ] . window ⁡ [ i ] ) PTS(DSn[PCS]) and PTS(DSn+1[PCS]) satisfy a relation PTS ⁡ ( DSn ⁡ [ PCS ] ) + ( 90000 ⨯ ∑ i = 1 m ⁢ SIZE ⁢ ⁢ ( DSn ⁡ [ WDS ] . window ⁡ [ i ] ) ) //256,000,000≦PTS(DSn+1[PCS]) where // is an operator for a division with a fractional part being rounded up.