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

• US 7,913,169 B2
• Filed: 08/22/2006
• Issued: 03/22/2011
• Est. Priority Date: 06/30/2003
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Yahata, Hiroshi, Okada, Tomoyuki, McCrossan, Joseph, Ikeda, Wataru
• Primary Examiner(s): Bashore; William L
• Assistant Examiner(s): PHANTANA ANGKOOL, DAVID
• Application Number:
  US11/508,094
• Publication Number:
  US 20060282775A1
• Time in Patent Office: 1,673 Days
• Field of Search: 715/721, 715/731, 715/718, 715/719
• US Class Current: 715/700
• 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 system LSI for decoding a graphics stream, said system LSI comprising:

a graphics decoder operable to decode the graphics stream which represents an interactive display including a plurality of graphical button materials to be overlaid with a motion picture, wherein;

the graphics stream includes a plurality of graphics data sets each forming a group of graphics data which renders a predetermined state of the graphical button materials;

the plurality of graphics data sets respectively renders different predetermined states of the graphical button materials and are disposed in a sequential order of displaying the different predetermined states;

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

the plurality of graphics data sets are disposed in an order of a normal-state set, a selected-state set, and an active-state set and

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

2. The system LSI of claim 1, wherein:

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;

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

a graphics controller operable to write the decompressed graphics data in a graphics data set for rendering the selected state to said graphics plane.

3. The system LSI of claim 1, 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 overlaid with a picture of the video stream in the reproduction section of a main stream.

4. The system LSI of claim 1 wherein:

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

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

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

a graphics decoder operable to obtain an interactive display including a plurality of graphical button materials by decoding the graphics stream;

a button number register operable to store a button number indicating a current button, out of the graphical button materials;

a receiver operable to receive a user operation with regard to the interactive display via an input device,

wherein;

the graphics stream represents the interactive display to be overlaid with a motion picture,

the graphics stream includes state control information and a plurality of graphics data sets being sequentially disposed therein, the state control information being stored in a packet, and the graphics data sets being stored in a plurality of packets,

each of the graphical button materials is displayed in any of a normal state, a selected state, and an active state,

the graphical data sets include (i) a first graphics data set composed of graphics data representing the normal state, (ii) a second graphics data set composed of graphics data representing the selected state, and (iii) a third graphics data set composed of graphics data representing the active state,

the graphics data sets are sequentially disposed in an order of the first graphics data set, the second graphics data set and the third graphics data set,

the input device has a key set for receiving a user operation of selecting one of four moving directions of up, down, right and left,

the graphics decoder obtains an initial display of the interactive display by presenting the current button with use of the graphics data of the second graphics data set corresponding to the selected state, and presenting other graphical button materials with use of the graphics data of the first graphics data set corresponding to the normal state,

in response to the user operation of selecting a moving direction, the button number register records a button number of a new current button which is present in the moving direction, out of neighboring graphical button materials, and

a state of one of the graphical button materials that is specified as the new current button is changed from the normal state to the selected state.