RECORDING MEDIUM, REPRODUCTION APPARATUS,RECORDING METHOD, PROGRAM, AND REPRODUCTION METHOD

• US 20100195982A1
• Filed: 04/09/2010
• Published: 08/05/2010
• Est. Priority Date: 01/31/2003
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: IKEDA, WATARU, OKADA, TOMOYUKI, UESAKA, YASUSHI, KOZUKA, MASAYUKI
• Granted Patent: US 8,463,107 B2
• Time in Patent Office: Days
• US Class Current: 386/337
• 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 27/3036 Time code signal
• 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 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/85 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 5/9205 the additional signal being at least another television signal
• 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 9/8715 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

Abstract

On a BD-ROM, there is recorded is a digital stream into which video and audio streams are multiplexed. The video stream is composed of a plurality of pictures that together represent video. The graphics stream includes a PES packet storing state control information (ICS) and PES packets containing graphics data (ODSs). The graphics data constructs an interactive display. The state control information defines the control so as to change the states of buttons presented on the interactive display according to the reproduction proceeding and user operations.

The ICS is attached with a PTS showing the display timing of a picture to be synchronized with the interactive display. The ODS is attached with a PTS showing the timing for decoding the graphics data. The timing shown in the ODS is prior to the display timing.

Claims

1. A method for recording data onto a recording medium, the method comprising:

a first step of multiplexing a video stream and a graphics stream to obtain a digital stream; and

a second step of recording the digital stream and uncompressed audio data onto the recording medium, wherein

the graphics stream includes a plurality of pairs graphics data and state control information that are integrated in the graphics stream, the graphics data being used to compose an interactive display that includes a button having a normal state, a selected state, an activated state, and the state control information being used to cause the button to change to a different state in response to a reproduction proceeding of the video stream and a user operation,

each pair of graphics data and state control information constitutes a display set, and

each piece of state control information in a corresponding display set includes click sound control information that indicates uncompressed audio data to be reproduced upon a state transition of the button to the selected state and to the activated state.

2. The method according to claim 1, wherein

each piece of state control information in a corresponding display set includes type information indicting a type of the corresponding display set, and

each piece of type information indicates whether graphics data included in a corresponding display set is identical in contents to graphics data included in an immediately preceding display set on the graphics stream.

3. A reproduction apparatus for reproducing a digital stream into which a video stream and a graphics stream are multiplexed, the reproduction apparatus comprising:

a video decoder operable to decode the video stream to obtain video data;

a graphics decoder operable to decode the graphics stream to obtain an interactive display that includes a button;

an audio decoder operable to decode an elementary stream multiplexed in the digital stream to produce audio output; and

a preload memory operable to store uncompressed audio data, wherein

the graphics stream includes a plurality of pairs graphics data and state control information that are integrated in the graphics stream, the graphics data being used to compose an interactive display that includes a button having a normal state, a selected state, an activated state, and the state control information being used to cause the button to change to a different state in response to a reproduction proceeding of the video stream and a user operation,

each pair of graphics data and state control information constitutes a display set, and

each piece of state control information in a corresponding display set includes click sound control information that indicates uncompressed audio data to be reproduced upon a state transition of the button to the selected state and to the activated state,

the reproduction apparatus further comprises a mixer operable, upon receipt of a user operation of selecting or activating the button, to mix (i) a piece of uncompressed audio data stored in the preload memory and associated with a corresponding one of the selected and activated states of the button and (ii) the audio output of the audio decoder and to output the mixed audio data, and

the graphics decoder includes;

a processing unit operable to decode the graphics data included in the graphic stream to obtain the interactive display including the button; and

a controller operable to change a state of the button based on a corresponding piece of state control information.

4. The reproduction apparatus according to claim 3, wherein

each piece of state control information in a corresponding display set includes type information indicting a type of the corresponding display set,

each piece of type information indicates whether graphics data included in a corresponding display set is identical in contents to graphics data included in an immediately preceding display set on the graphics stream,

when performing normal reproduction, the controller ignores a display set of which type information indicates that graphics data included in the display set is identical in contents to graphics data included in an immediately preceding display set, and

when performing reproduction starting from a point searched in a skip operation, the controller starts decoding from a display set that is located after the reproduction start point and that has type information indicating that graphics data included in the display set is identical in contents to graphics data included in an immediately preceding display set.

5. A method for reproducing a digital stream into which a video stream and a graphics stream are multiplexed, the method comprising:

a first step of decoding the video stream to obtain video data;

a second step of decoding the graphics stream to obtain an interactive display that includes a button, and

a third step of decoding an elementary stream multiplexed in the video stream, to produce audio output, wherein

the graphics stream includes a plurality of pairs graphics data and state control information that are integrated in the graphics stream, the graphics data being used to compose the interactive display that includes the button having a normal state, a selected state, an activated state, and the state control information being used to cause the button to change to a different state in response to a reproduction proceeding of the video stream and a user operation,

each pair of graphics data and state control information constitutes a display set, and

each piece of state control information in a corresponding display set includes click sound control information that indicates uncompressed audio data to be reproduced upon a state transition of the button to the selected state and to the activated state,

the method further comprises a fourth step of, upon receipt of a user operation of selecting or activating the button, mixing (i) a piece of uncompressed audio data associated with a corresponding one of the selected and activated states of the button and (ii) the audio output of the third step and outputting the mixed audio data, and

the second step includes;

a sub-step of decoding the graphics data included in the graphic stream to obtain the interactive display including the button; and

a sub-step of changing a state of the button based on a corresponding piece of state control information.

6. A reproduction system comprising:

a recording medium having (i) a digital stream into which a video stream and a graphics stream are multiplexed and (ii) uncompressed audio data recorded thereon; and

a reproduction apparatus for reproducing the recording medium, wherein

the graphics stream includes a plurality of pairs graphics data and state control information that are integrated in the graphics stream, the graphics data being used to compose an interactive display that includes a button having a normal state, a selected state, an activated state, and the state control information being used to cause the button to change to a different state in response to a reproduction proceeding of the video stream and a user operation,

each pair of graphics data and state control information constitutes a display set, and

each piece of state control information in a corresponding display set includes click sound control information that indicates uncompressed audio data to be reproduced upon a state transition of the button to the selected state and to the activated state,

the reproduction apparatus includes;

a video decoder operable to decode the video stream to obtain video data;

a graphics decoder operable to decode the graphics stream to obtain the interactive display that includes the button;

an audio decoder operable to decode an elementary stream multiplexed in the digital stream to produce audio output;

a preload memory operable to store the uncompressed audio data; and

a mixer operable, upon receipt of a user operation of selecting or activating the button, to mix (i) a piece of uncompressed audio data stored in the preload memory and associated with a corresponding one of the selected and activated states of the button and (ii) the audio output of the audio decoder and to output the mixed audio data, and

the graphics decoder includes;

a processing unit operable to decode the graphics data included in the graphic stream to obtain the interactive display including the button, and

a controller operable to change a state of the button based on state control information.

7. A recording medium comprising:

a digital stream into which a video stream and a graphics stream are multiplexed; and

uncompressed audio data, wherein

the graphics stream includes a plurality of pairs graphics data and state control information that are integrated in the graphics stream, the graphics data being used to compose an interactive display that includes a button having a normal state, a selected state, an activated state, and the state control information being used to cause the button to change to a different state in response to a reproduction proceeding of the video stream and a user operation,

each pair of graphics data and state control information constitutes a display set, and

each piece of state control information in a corresponding display set includes click sound control information that indicates uncompressed audio data to be reproduced upon a state transition of the button to the selected state and to the activated state.