Encoding apparatus of audio signal, audio disc and disc reproducing apparatus

• US 20030228138A1
• Filed: 06/18/2003
• Published: 12/11/2003
• Est. Priority Date: 11/21/1997
• Status: Active Grant

• Current Assignee: Rakuten, Inc. (Rakuten Group, Inc.)
• Original Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Inventors: Tanaka, Yoshiaki, Ueno, Shoji, Fuchigami, Norihiko
• Granted Patent: US 7,792,416 B2
• Time in Patent Office: Days
• US Class Current: 386/96
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 2220/211 Discs having both read-only and rewritable or recordable areas containing application data; Partial ROM media
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• 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

Abstract

DVD-video data and DVD-audio data are recorded in a DVD-Avd disc. The DVD-audio data is composed of an audio manager having an audio manager information, an audio manager menu, a first audio title set including first audio data and a second audio title set including second audio data. The first audio data of the first audio title set is connected with audio contents included in the DVD-video data, and a real time information (RTI) pack or a still picture (SPCT) pack is included in the second audio title set. Therefore, the audio contents of the DVD-video data and the audio data of the DVD-audio data are managed by the audio manager information, and text information indicated by real time information or a still picture is displayed while reproducing the audio data. Also, DVD-video data recorded in a DVD-video disc, which is normally reproduced by using a reproducing apparatus dedicated to the DVD-video disc, can be reproduced by using a reproducing apparatus for the DVD-Avd disc.

Claims

1. An audio disc having a data structure comprising:

a video title set;

a first managing area (VMG) including information (VMGI) for managing the video title set;

an audio title set not including a pack for reproduction control but including audio data; and

a second managing area (AMG) including information (AMGI) for managing the audio title set and managing audio contents of the video title set.

2. An audio disc according to claim 1 in which audio data of the audio title set includes either first audio data obtained by performing an analog-digital conversion for an analog audio signal at a first sampling frequency or second audio data obtained by performing an analog-digital conversion for an analog audio signal at a second sampling frequency.

3. An audio disc according to claim 2 in which the analog-digital conversion is performed at the first sampling frequency of 48 kHz or a multiple of 48 kHz to obtain the first audio data, a frame speed for the first audio signal is 1/600 second, the analog-digital conversion is performed at the second sampling frequency of 44.1 kHz or a multiple of 44.1 kHz to obtain the second audio data, and a frame speed for the second audio signal is 1/551.25 second.

4. An audio disc reproducing apparatus for reproducing data recorded in an audio disc, of which a data structure comprises:

a video title set;

a first managing area (VMG) including information (VMGI) for managing the video title set;

an audio title set not including a pack for reproduction control but including audio data; and

a second managing area (AMG) including information (AMGI) for managing the audio title set and managing audio contents of the video title set, the audio disc reproducing apparatus comprising;

reproducing means for reproducing the audio contents of the video title set and the audio data of the audio title set by using the information of the second managing area.

5. An audio disc reproducing apparatus for reproducing data recorded in an audio disc, of which a data structure comprises:

a video title set;

a first managing area (VMG) including information (VMGI) for managing the video title set;

an audio title set not including a pack for reproduction control but including either first audio data obtained by performing an analog-digital conversion for an analog audio signal at a first sampling frequency or second audio data obtained by performing an analog-digital conversion for an analog audio signal at a second sampling frequency; and

a second managing area (AMG) including information (AMGI) for managing the audio title set and managing audio contents of the video title set, the audio disc reproducing apparatus comprising;

first reproducing means for reproducing a first analog audio signal by performing a digital-analog conversion for the first audio data; and

second reproducing means for reproducing a second analog audio signal by performing a digital-analog conversion for the second audio data.

6. An audio disc reproducing apparatus according to claim 5, further comprising:

displaying means for displaying the first sampling frequency of the first audio data for which the digital-analog conversion is performed by the first reproducing means and displaying the second sampling frequency of the second audio data for which the digital-analog conversion is performed by the second reproducing means.

7. An audio disc having a data structure comprising:

an audio title set having audio data and still picture data;

a video title set;

a first managing area (VMG) including information for managing the video title set;

a second managing area (AMG) including information for managing the audio title set and the video title set; and

TOC information.

8. An audio signal encoding apparatus, comprising:

formatting means for formatting an audio dedicated title having audio data to a data structure in which the audio data of the title is arranged in a first pack, text information relating to the audio data of the first pack and display time control data for controlling a display time of the text information are arranged in a second pack, and information for managing the reproduction of the first pack is arranged in a managing area of audio manager information (AMGI).

9. An audio signal encoding apparatus according to claim 8 in which a display start time and a display end time in the display time control data are indicated by addresses of the first pack.

10. An audio signal encoding apparatus according to claim 8 in which the text information and the display time control data are selective, and identification information indicating the text information selected and the display time control data selected is formatted.

11. An audio signal encoding apparatus according to claim 10 in which the identification information is recorded in a private header.

12. An audio signal encoding apparatus of a disc, in which a title having first audio data and video data and an audio dedicated title having second audio data are recorded, comprising:

formatting means for formatting the audio dedicated title to a data structure, in which the second audio data of the audio dedicated title is arranged in a first pack, text information relating to the second audio data of the first pack and display time control data for controlling a display time of the text information are arranged in a second pack and information for managing the reproduction of the first pack is arranged in a managing area of audio manager information (AMGI), and formatting the title having first audio data and video data to a data structure in which the first audio data of the title is arranged in a first pack, the video data is arranged in a third pack, information for controlling the reproduction of the first and third packs is arranged in a navigation pack of a prescribed standard, and information for managing the reproduction of the first and third packs is arranged in a managing area of video manager information (VMGI).

13. A disc having a data structure in which a first pack including audio data, a second pack including both text information relating to the audio data of the first pack and display time control data for controlling a display time of the text information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title.

14. A disc according to claim 13 in which a display start time and a display end time in the display time control data are indicated by addresses of the first pack.

15. A disc according to claim 13 in which the text information and the display time control data are selective, and identification information indicating the text information selected and the display time control data selected is recorded.

16. An audio signal encoding apparatus according to claim 15 in which the identification information is recorded in a private header.

17. A disc having a data structure in which a first pack including audio data, a second pack including both text information relating to the audio data of the first pack and display time control data for controlling a display time of the text information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title having the audio data and in which a first pack including audio data, a third pack including video data, a navigation pack of a prescribed standard including information for controlling the reproduction of the first and third packs and a video manager information (VMGI) managing area including information for managing the reproduction of the first and third packs are arranged as a title having the audio data and the video data.

18. A disc reproducing apparatus for reproducing data recorded in a disc having a data structure in which a first pack including audio data, a second pack including both text information relating to the audio data of the first pack and display time control data for controlling a display time of the text information and an audio manager information (AMGI) managing area including information for managing the

reproduction of the first pack are arranged as an audio dedicated title, comprising:

reproducing means for reproducing the audio data of the first pack and the text information and the display time control data of the second pack;

first decoding means for decoding the text information reproduced by the reproducing means;

second decoding means for decoding the display time control data reproduced by the reproducing means; and

text information displaying means for displaying the text information decoded by the first decoding means according to the display time control data decoded by the second decoding means.

19. A disc reproducing apparatus according to claim 18 in which a display start time and a display end time in the display time control data are indicated by addresses of the first pack.

20. A disc reproducing apparatus according to claim 18 in which the text information and the display time control data are selective, identification information indicating the text information selected and the display time control data selected is recorded in the disc, and the text information selected and the display time control data selected are reproduced according to the identification information.

21. A disc reproducing apparatus according to claim 20 in which the identification information is recorded in a private header of the disc.

22. A disc reproducing apparatus for reproducing data recorded in a disc having a data structure, in which a first pack including audio data, a second pack including both text information relating to the audio data of the first pack and display time control data for controlling a display time of the text information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title and in which a first pack including audio data, a third pack including video data, a navigation pack of a prescribed standard including information for controlling the reproduction of the first and third packs and a video manager information (VMGI) managing area including information for managing the reproduction of the first and third packs are arranged as a title having the audio data and the video data, comprising:

reproducing means for reproducing the audio data of the first pack and the text information and the display time control data of the second pack;

first decoding means for decoding the text information reproduced by the reproducing means;

second decoding means for decoding the display time control data reproduced by the reproducing means; and

text information displaying means for displaying the text information decoded by the first decoding means according to the display time control data decoded by the second decoding means.

23. An audio signal encoding apparatus, comprising:

formatting means for formatting to a data structure in which audio data is arranged in a first pack, video data is arranged in a second pack, text information relating to the audio data of the first pack is arranged in a third pack, and both information for controlling the reproduction of the first and second packs and display time control data for controlling a display time of the text information arranged in the third pack are arranged in a navigation pack of a prescribed standard.

24. A disc having a data structure in which a first pack including audio data, a second pack including video data, a third pack including text information relating to the audio data of the first pack and a navigation pack of a prescribed standard including both information for controlling the reproduction of the first and second packs and display time control data for controlling a display time of the text information arranged in the third pack are arranged.

25. A disc reproducing apparatus for reproducing data recorded in a disc having a data structure, in which a first pack including audio data, a second pack including video data, a third pack including text information relating to the audio data of the first pack and a navigation pack of a prescribed standard including both information for controlling the reproduction of the first and second packs and display time control data for controlling a display time of the text information arranged in the third pack are arranged, comprising:

reproducing means for reproducing the audio data of the first pack and the text information of the third pack and the display time control data of the navigation pack;

first decoding means for decoding the text information reproduced by the reproducing means;

second decoding means for decoding the display time control data reproduced by the reproducing means; and

text information displaying means for displaying the text information decoded by the first decoding means according to the display time control data decoded by the second decoding means.

26. An audio signal encoding apparatus, comprising:

formatting means for formatting an audio dedicated title to a data structure in which audio data of the title is arranged in a first pack, both sound control information relating to the audio data of the first pack and application time control data for controlling an application time of the sound control information is arranged in a second pack and information for managing the reproduction of the first pack is arranged in an audio manager information (AMGI) managing area.

27. An audio signal encoding apparatus according to claim 26 in which the sound control information and the application time control data are selective, and identification information indicating the sound control information selected and the application time control data selected is formatted.

28. An audio signal encoding apparatus according to claim 27 in which the identification information is recorded in a private header.

29. An audio signal encoding apparatus of a disc, in which a title having first audio data and video data and an audio dedicated title having second audio data are recorded, comprising:

formatting means for formatting the audio dedicated title to a data structure, in which the second audio data of the audio dedicated title is arranged in a first pack, sound control information relating to the second audio data of the first pack and application time control data for controlling an application time of the sound control information is arranged in a second pack and information for managing the reproduction of the first pack is arranged in an audio manager information (AMGI) managing area, and formatting the title having first audio data and video data to a data structure in which the first audio data of the title is arranged in a first pack, the video data is arranged in a third pack, information for controlling the reproduction of the first and third packs is arranged in a navigation pack of a prescribed standard and information for managing the reproduction of the first and third packs is arranged in a video manager information (VMGI) managing area.

30. A disc having a data structure in which a first pack including audio data, a second pack including both sound control information relating to the audio data of the first pack and application time control data for controlling an application time of the sound control information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title having the audio data.

31. An audio signal encoding apparatus according to claim 30 in which the sound control information and the application time control data are selective, and identification information indicating the sound control information selected and the application time control data selected is recorded.

32. An audio signal encoding apparatus according to claim 31 in which the identification information is recorded in a private header.

33. A disc having a data structure in which a first pack including audio data, a second pack including both sound control information relating to the audio data of the first pack and application time control data for controlling an application time of the sound control information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title having the audio data and in which a first pack including audio data, a third pack including video data, a navigation pack of a prescribed standard including information for controlling the reproduction of the first and third packs and a video manager information (VMGI) managing area including information for managing the reproduction of the first and third packs are arranged as a title having the audio data and the video data.

34. A disc reproducing apparatus for reproducing data recorded in a disc having a data structure, in which a first pack including audio data, a second pack including both sound control information relating to the audio data of the first pack and application time control data for controlling an application time of the sound control information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title having the audio data, comprising:

reproducing means for reproducing the audio data of the first pack and both the sound control information and the application time control data of the second pack;

first decoding means for decoding the sound control information reproduced by the reproducing means;

second decoding means for decoding the application time control data reproduced by the reproducing means; and

text information displaying means for displaying the sound control information decoded by the first decoding means according to the application time control data decoded by the second decoding means.

35. A disc reproducing apparatus according to claim 34 in which the sound control information and the application time control data are selective, identification information indicating the sound control information selected and the application time control data selected is recorded in the disc, and the sound control information selected and the application time control data selected are reproduced according to the identification information.

36. A disc reproducing apparatus according to claim 35 in which the identification information is recorded in a private header of the disc.

37. A disc reproducing apparatus for reproducing data recorded in a disc having a data structure, in which a first pack including audio data, a second pack including both sound control information relating to the audio data of the first pack and application time control data for controlling an application time of the sound control information and an audio manager information (AMGI) managing area including information for managing the reproduction of the first pack are arranged as an audio dedicated title having the audio data and in which a first pack including audio data, a third pack including video data, a navigation pack of a prescribed standard including information for controlling the reproduction of the first and third packs and a video manager information (VMGI) managing area including information for managing the reproduction of the first and third packs are arranged as a title having the audio data and the video data, comprising:

reproducing means for reproducing the audio data of the first pack and both the sound control information and the application time control data of the second pack;

first decoding means for decoding the sound control information reproduced by the reproducing means;

second decoding means for decoding the application time control data reproduced by the reproducing means; and

text information displaying means for displaying the sound control information decoded by the first decoding means according to the application time control data decoded by the second decoding means.