Recording medium, reproduction device, recording method, program, and reproduction method

• US 20060236218A1
• Filed: 06/29/2004
• Published: 10/19/2006
• Est. Priority Date: 06/30/2003
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Yahata, Hiroshi, Okada, Tomoyuki, McCrossan, Joseph, Ikeda, Wataru
• Granted Patent: US 7,716,584 B2
• Time in Patent Office: Days
• US Class Current: 715/201
• CPC Class Codes: G11B 19/025 'Virtual' control panels, e.g. Graphical User Interface [GUI]
• CPC Class Codes: G11B 19/027 Remotely controlled remote control systems in general G08C
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/213 Read-only discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/322 used signal is digitally coded
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04N 2005/91321 the copy protection signal being a copy protection control signal, e.g. a record inhibit signal
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8063 : using time division multiplex of the PCM audio and PCM video signals
• CPC Class Codes: H04N 9/8205 : involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: H04N 9/8227 : the additional signal being at least another television signal

Abstract

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.

Claims

1. A recording medium comprising a graphics stream;

wherein;

said graphics stream represents an interactive display to be overlayed with a motion picture made of a plurality of pictures, the interactive display including at least one graphical button material;

said graphics stream includes a plurality of pieces of graphics data that are grouped under state sets; and

the state sets respectively correspond to different states of the at least one button material and are disposed in a sequential order.

2. The recording medium of claim 1, wherein:

the states are respectively a normal state, a selected state, and an active state; and

the state sets are respectively a normal-state set, a selected-state set, and an active-state set, and are disposed in an order of the normal-state set, the selected-state set, and the active-state set.

3. The recording medium of claim 2, wherein:

the graphics stream further includes state control information used to control the states of the at least one button material, the state control information being disposed in front of the plurality of pieces of graphics data; and

when a button material to be in a selected state in an initial display of the interactive display by default is determined, graphics data constituting the selected state of the button material to be in a selected state in the initial display is disposed first in the selected-state set; and

the state control information includes specification information used to specify the button material to be in a selected state in the initial display.

4. The recording medium of claim 2, wherein:

said graphics stream further includes state control information used to control the states of the at least one button material, the state control information being disposed in front of the plurality of pieces of graphics data; and

when a button material to be in a selected state in an initial display of the interactive display by default dynamically changes, the state sets are not provided in any particular order; and

the state control information includes specification information used to indicate that the button material to be in a selected state in the initial display by default dynamically changes.

5. A reproduction apparatus for reproducing a video stream and a graphics stream, said reproduction apparatus comprising:

a video decoder operable to decode the video stream into a motion picture made of a plurality of pictures; and

a graphics decoder operable to cause an interactive display to be displayed overlayed with the motion picture, the interactive display including at least one graphical button material;

wherein;

the graphics stream includes a plurality of pieces of graphics data that are grouped under state sets;

the state sets respectively correspond to different states of the at least one button material and are disposed in a sequential order; and

said graphics decoder uses graphics data respectively belonging to a top set and a second-place set in the state sets, for presenting the initial display of the interactive display, and uses graphics data belonging to remaining ones of the state sets for updating the interactive display upon a user operation.

6. The reproduction apparatus of claim 5, wherein

said graphics decoder includes:

a graphics processor operable to decode the plurality of pieces of graphics data;

an object buffer operable to store a plurality of pieces of decompressed graphics data obtained by the decoding;

a graphics plane operable to store at least some of the pieces of the decompressed graphics data that are to be overlayed with the motion picture; and

a control unit operable to;

enable the initial display of the interactive display to be presented by controlling to overlay, with the motion picture, decompressed graphics data respectively belonging to the top state set and the second-place state set which has been written to the graphics plane from said object buffer; and

enable the interactive display to be updated, by controlling to overlay, with the motion picture, decompressed graphics data belonging to the remaining ones of the state sets which has been written to the graphics plane from said object buffer.

7. The reproduction apparatus of claim 6, wherein:

the states are respectively a normal state, a selected state, and an active state; and

the state sets are respectively a normal-state set, a selected-state set, and an active-state set, and are disposed in an order of the normal-state set, the selected-state set, and the active-state set;

the graphics stream further includes state control information used to control the states of the at least one button material; and

when the state control information includes description specifying a button material to be in a selected state in the initial display by default, the graphics decoder performs the initial display using (a) graphics data in the selected-state set corresponding to the button material to be in a selected state in the initial display, and (b) graphics data in the normal-state set corresponding to any other button material than the button material to be in a selected state in the initial display.

8. The reproduction apparatus of claim 7, wherein

said control unit, upon completion of decoding of the first graphics data of the selected-state set, performs (i) clearing of the graphics plane, and (ii) reading from said object buffer, and writing to the cleared graphics plane (a) the graphics data in the selected-state set corresponding to the button material to being selected state in the initially display, and (b) the graphics data in the normal-state set corresponding to any other button material than the button material to be in a selected state in the initial display.

9. A recording method for recording to a recording medium, said method comprising:

creating application data; and

recording the created data to the recording medium;

wherein;

the application data includes a graphics stream;

the graphics stream represents an interactive display to be overlayed with a motion picture made of a plurality of pictures, the interactive display including at least one graphical button material;

the graphics stream includes a plurality of pieces of graphics data that are grouped under state sets; and

the state sets respectively correspond to different states of the at least one button material and are disposed in a sequential order.

10. A program for enabling a computer to reproduce a video stream and a graphics stream, said program comprising code operable to cause the computer to perform:

a decoding the video stream into a motion picture made of a plurality of pictures; and

a display of an interactive display to be overlayed with the motion picture, the interactive display including at least one graphical button material;

wherein;

the graphics stream includes a plurality of pieces of graphics data that are grouped under state sets;

the state sets respectively correspond to different states of the at least one button material and are disposed in a sequential order; and

in said display, graphics data respectively belonging to a top set and a second-place set in the state sets is used for presenting an initial display of the interactive display, and graphics data belonging to remaining ones of the state sets is used for updating the interactive display upon a user operation.

11. A method of reproducing a video stream and a graphics stream, said reproduction method comprising:

decoding the video stream into a motion picture made of a plurality of pictures; and

displaying an interactive display to be overlayed with the motion picture, the interactive display including at least one graphical button material;

wherein;

the graphics stream includes a plurality of pieces of graphics data that are grouped under state sets;

the state sets respectively correspond to different states of the at least one button material and are disposed in a sequential order; and

in said displaying, graphics data respectively belonging to a top set and a second-place set in the state sets is used for presenting an initial display of the interactive display, and graphics data belonging to remaining ones of the state sets is used for updating the interactive display upon a user operation.