Patent ID: 7505050

Claim:
A recording medium used with a reproduction apparatus, the reproduction apparatus comprising: a video decoder operable to decode a video stream so as to obtain a moving picture; a graphics decoder operable to decode first graphics data included in graphics stream so as to obtain second graphics data which is to be combined with the moving picture, and the graphics decoder including a graphics controller and an object buffer storing the second graphics data; and a plane memory for rendering the second graphics data, the recording medium comprising: the video stream; and the graphics stream, wherein: the graphics stream includes one or more Display Sets; a leading Display Set among the one or more Display Sets is of an Epoch Start type; the leading Display Set of the Epoch Start type includes the first graphics data and window information indicating a size and a position of a window, the window being a bounded area for a display on a plane memory; and when rendering a part of the second graphics data which is stored in the object buffer, the window information indicates the graphics controller to render the part of the second graphics data in the object buffer within the window on the plane memory while refraining from rendering the other part of the second graphics data in the object buffer outside of the window on the plane memory.