초록 ▼

A BD-ROM has recorded therein an AV Clip generated by multiplexing a video stream and a graphics stream. The graphics stream represents an interactive display to be overlayed with the video stream, and includes a sequence of three Button State groups. The interactive display includes a plurality of

A BD-ROM has recorded therein an AV Clip generated by multiplexing a video stream and a graphics stream. The graphics stream represents an interactive display to be overlayed with the video stream, and includes a sequence of three Button State groups. The interactive display includes a plurality of buttons, each of which changes from a normal state to a selected state, and from the selected state to an active state, according to a user operation. In the three Button State groups in the graphics stream, the first-order group (N-ODSs) is made of a plurality of pieces of graphics data, which represent normal states of the buttons, the second-order group (S-ODSs) is made of a plurality of pieces of graphics data, which represent selected states of the buttons, and the third-order group (A-ODSs) is made of a plurality of pieces of graphics data, which represent active states of the buttons.

대표청구항 ▼

The invention claimed is: 1. A recording medium comprising:a graphics stream which represents an interactive display including a plurality of graphical buttons to be overlayed with a motion picture wherein:said graphics stream includes a plurality of object definition segment sets and control inform

The invention claimed is: 1. A recording medium comprising:a graphics stream which represents an interactive display including a plurality of graphical buttons to be overlayed with a motion picture wherein:said graphics stream includes a plurality of object definition segment sets and control information which controls states of each of said graphical buttons, each having at least a normal state, a selected state and an active state; andsaid plurality of object definition segment sets comprise a first object definition segment set forming a group of graphics data for rendering the normal state of each of said plurality of graphical buttons, a second object definition segment set forming a group of graphics data for rendering the selected state of each of said plurality of graphical buttons, and a third object definition segment set forming a group of graphics data for rendering the active state of each of said plurality of graphical buttons;said first, second and third object definition segment sets are disposed in a sequential order of the first object definition segment set for rendering the normal state of each of said plurality of graphical buttons, the second object definition segment set for rendering the selected state of each of said plurality of graphical buttons, and the third object definition segment set for rendering the active state of each of said plurality of graphical buttons;said control information includes information indicating one of said graphical buttons as a default selected button to be displayed in the selected state at an initial display of the interactive display;said control information includes button information of the one of said graphical buttons indicated as the default selected button, the button information including an object identifier that specifies an object ID of an object to be displayed as the default selected button; andsaid graphics data for rendering the selected state for the default selected state button is disposed at a beginning of said second object definition segment set.