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

• US 8,010,908 B2
• Filed: 08/22/2006
• Issued: 08/30/2011
• Est. Priority Date: 06/30/2003
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Okada, Tomoyuki, McCrossan, Joseph, Ikeda, Wataru, Yahata, Hiroshi
• Primary Examiner(s): Roswell; Michael
• Application Number:
  US11/508,132
• Publication Number:
  US 20060288290A1
• Time in Patent Office: 1,834 Days
• Field of Search: 715/840, 715/749, 715/810, 715/716, 715/797
• US Class Current: 715/840
• 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 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; and

said 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 which is to be set in said selected state as a default can be changed dynamically; and

said one of said graphical buttons which is to be set in said selected state is dynamically changed when out of said plurality of graphical buttons included in the interactive display at the initial display, a button corresponding to a current button number stored in a register of a reproduction apparatus is selected as a default selected button.

2. The recording medium of claim 1, further comprising play list information, wherein:

said play list information includes main-path information and sub-path information;

said main-path information indicates a video stream as a main stream and defines a reproduction section of the main stream;

said sub-path information indicates said graphics stream as a sub stream which synchronizes with said main stream, defines a reproduction section of said sub stream and includes reproduction information;

said reproduction information indicates a synchronization point on a reproduction time axis of said main stream; and

said interactive display is represented to be overlayed with a picture of said video stream in said reproduction section of said main stream.

3. The recording medium of claim 1, wherein the graphics stream representing the interactive display comprises a plurality of packet elementary stream (PES) packets, the control information and the plurality of object definition segment sets are included in the plurality of PES packets.

4. The recording medium of claim 2, further comprising a read- only optical disk, wherein:

said video stream is recorded on a read-only optical disk; and

said graphics stream and said video stream are recorded on said recording medium which is a rewritable disk.

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

a graphics decoder operable to decode the graphics stream which represents an interactive display including a plurality of graphical buttons to be overlayed with a motion picture, and

a graphics plane operable to store decompressed graphics data, wherein;

the graphics stream includes a plurality of object definition segment sets and a control information which controls states of each of the graphical buttons, each having at least a normal state, a selected state and an active state; and

the 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 the plurality of graphical buttons, a second object definition segment set forming a group of graphics data for rendering the selected state of each of the 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 the plurality of graphical buttons;

the 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 the plurality of graphical buttons, the second object definition segment set for rendering the selected state of each of the plurality of graphical buttons, and the third object definition segment set for rendering the active state of each of the plurality of graphical buttons;

the control information includes information indicating one of the graphical buttons which is to be set in the selected state as a default can be changed dynamically;

the one of the graphical buttons which is to be set in said selected state is dynamically changed when out of the plurality of graphical buttons included in the interactive display at the initial display, a button corresponding to a current button number stored in a register of the reproduction apparatus is selected as a default selected button; and

said graphics decoder includes;

a graphics processor operable to decode the graphics data;

an object buffer operable to store decompressed graphics data obtained by the decoding; and

a graphics controller operable to write the decompressed graphics data in the second object definition segment set to the graphics plane.

6. The reproduction apparatus of claim 5 further comprising a video decoder which decodes the video stream and reads play list information recorded on a recording medium, wherein:

the play list information includes main-path information and sub-path information;

the main information indicates the video stream as a main stream and defines a reproduction section of the main stream, the video stream includes pictures;

the sub-path information indicates the graphics stream as a sub stream which synchronizes with the main stream, defines a reproduction section of the sub stream and includes reproduction information;

the reproduction information indicates a synchronization point on a reproduction time axis of the main stream; and

the interactive display is represented to be overlayed with a picture of the video stream in the reproduction section of a main stream.

7. The reproduction apparatus of claim 5, wherein the graphics stream representing the interactive display comprises a plurality of packet elementary stream (PES) packets, the control information and the plurality of object definition segment sets are included in the plurality of PES packets.

8. The reproduction apparatus of claim 6, wherein:

the video stream is recorded on a read-only optical disk; and

the graphics stream and the video stream are recorded on a recording medium which is a rewritable disk.

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

creating application data; and

recording the created application 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, the interactive display including a plurality of graphical buttons;

the graphics stream includes a plurality of object definition segment sets and a control information which controls states of each of the graphical buttons, each having at least a normal state, a selected state and an active state;

the 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 the plurality of graphical buttons, a second object definition segment set forming a group of graphics data for rendering the selected state of each of the 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 the plurality of graphical buttons;

the 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 the plurality of graphical buttons, the second object definition segment set for rendering the selected state of each of the plurality of graphical buttons, and the third object definition segment set for rendering the active state of each of the plurality of graphical buttons;

the control information includes information indicating one of the graphical buttons which is to be set in the selected state as a default can be changed dynamically; and

the one of the graphical buttons which is to be set in said selected state is dynamically changed when out of the plurality of graphical buttons included in the interactive display at the initial display, a button corresponding to a current button number stored in a register of a reproduction apparatus is selected as a default selected button.

10. The recording method of claim 9, wherein the graphics stream representing the interactive display comprises a plurality of packet elementary stream (PES) packets, the control information and the plurality of object definition segment sets are included in the plurality of PES packets.

11. A program embodied on a computer readable medium for enabling a computer to reproduce a graphics stream, said program comprising code operable to cause the computer to perform:

a decoding of the graphics stream; and

a displaying of an interactive display to be overlayed with a motion picture, the interactive display including a plurality of graphical buttons;

wherein;

the graphics stream includes a plurality of object definition segment sets and control information which controls states of each of the graphical buttons, each having at least a normal state, a selected state and an active state;

the plurality of object definition segment sets comprise a first object definition segment set forming a group of graphics data for rendering the normal state, a second object definition segment set forming a group of graphics data for rendering the selected state, and a third object definition segment set forming a group of graphics data for rendering the active state;

the 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 the plurality of graphical buttons, the second object definition segment set for rendering the selected state of each of the plurality of graphical buttons, and the third object definition segment set for rendering the active state of each of the plurality of graphical buttons;

the control information includes information indicating one of the graphical buttons which is to be set in the selected state as a default can be changed dynamically;

the one of the graphical buttons which is to be set in said selected state is dynamically changed when out of the plurality of graphical buttons included in the interactive display at the initial display, a button corresponding to a current button number stored in a register of the computer is selected as a default selected button; and

the computer includes;

a graphics processor operable to decode the graphics data;

an object buffer operable to store decompressed graphics data obtained by the decoding; and

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

wherein the decompressed graphics data in the second object definition segment set is written to the graphics plane.

12. The program of claim 11, wherein the graphics stream representing the interactive display comprises a plurality of packet elementary stream (PES) packets, the control information and the plurality of object definition segment sets are included in the plurality of PES packets.

13. A method of reproducing a graphics stream which represents an interactive display including a plurality of graphical buttons to be overlayed with a motion picture, said reproduction method comprising:

decoding the graphics stream, wherein;

the graphics stream includes a plurality of object definition segment sets and control information which controls states of each of the graphical buttons, each having at least a normal state, a selected state and an active state; and

the plurality of object definition segment sets comprise a first graphics data set forming a group of graphics data for rendering the normal state of each of the plurality of graphical buttons, a second object definition segment set forming a group of graphics data for rendering the selected state of each of the 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 the plurality of graphical buttons;

the 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 the plurality of graphical buttons, the second object definition segment set for rendering the selected state of each of the plurality of graphical buttons, and the third object definition segment set for rendering the active state of each of the plurality of graphical buttons;

the control information includes information indicating one of the graphical buttons which is to be set in the selected state as a default can be changed dynamically;

the one of the graphical buttons which is to be set in said selected state is dynamically changed when out of the plurality of graphical buttons included in the interactive display at the initial display, a button corresponding to a current button number stored in a register of a reproduction apparatus is selected as a default selected button; and

said decoding includes;

decoding the graphics data;

storing decompressed graphics data obtained by the decoding onto an object buffer;

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

writing the decompressed graphics data in the second object definition segment set to the graphics plane.

14. The method of claim 13, wherein the graphics stream representing the interactive display comprises a plurality of packet elementary stream (PES) packets, the control information and the plurality of object definition segment sets are included in the plurality of PES packets.