Audio playback device

• US 20060198610A1
• Filed: 02/22/2006
• Published: 09/07/2006
• Est. Priority Date: 02/25/2005
• Status: Active Grant

• Current Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Original Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Inventors: Akifusa, Hirokazu
• Granted Patent: US 7,755,979 B2
• Time in Patent Office: Days
• US Class Current: 386/243
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 5/85 on discs or drums
• 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

Abstract

An audio playback device is provided which can play back recorded audio data in an operational mode that is more convenient for the user. With a DVD-Audio disk 1 mounted, a navigation manager examines whether or not the DVD-Audio disk 1 includes an ASVSI file, that is, whether or not the DVD-Audio disk 1 includes a still picture to be displayed together with the audio data. Also, the navigation manager examines whether or not an AMGM_VOBS file exists in the DVD-Audio disk 1, that is, whether or not the DVD-Audio disk 1 includes a visual menu. When a still picture or visual menu is not included, a player mode is set to an AOP mode in which the still picture is not played back, while in other cases, the player mode is set to a VCAP mode in which the visual menu or visual contents can be played back and displayed.

Claims

1. An audio playback device for playing back audio tracks recorded on a recording medium, which is capable of recording therein a visual menu for receiving an operation from a user regarding a playback operation of the recording medium, the audio playback device comprising:

a determination section for determining whether or not said visual menu is recorded on the recording medium; and

a mode setting section for setting said audio playback device into a mode of displaying the visual menu and playing back the audio tracks recorded on the recording medium in a playback sequence defined in accordance with the operation received by the visual menu displayed when the determination section determines that the visual menu is recorded on the recording medium, and for setting said audio playback device into a mode of playing back the audio tracks recorded on the recording medium in a playback sequence autonomously defined without displaying a visual menu when the determination section determines that a visual menu is not recorded on the recording medium.

2. An audio playback device for playing back audio tracks recorded on a recording medium, which is capable of recording therein visual contents to be displayed in playing back an audio track, the audio playback device comprising:

a determination section for determining whether or not said visual contents are recorded on the recording medium; and

a mode setting section for setting said audio playback device into a mode of displaying the visual contents in playing back an audio track when the determination section determines that the visual contents are recorded on the recording medium, and for setting said audio playback device into a mode of displaying an image previously recorded in the audio playback device in playing back an audio track when the determination section determines that the visual contents are not recorded on the recording medium.

3. A DVD-Audio playback device for playing back a DVD-Audio disk, while selectively serving as a video capable audio player (VCAP), an audio only player (AOP), or a simple audio player (SOP) in accordance with a set mode, the DVD-Audio playback device comprising:

a visual menu determination section for determining whether or not a visual menu is recorded on the DVD-Audio disk; and

a mode setting section for setting the audio playback device into a mode of serving as the AOP or SOP when the visual menu determination section determines that a visual menu is not recorded on the DVD-Audio disk.

4. The DVD-Audio playback device according to claim 3, wherein said mode setting section sets said audio playback device into the mode of serving as the VCAP when the visual menu determination section determines that a visual menu is recorded on the DVD-Audio disk.

5. The DVD-Audio playback device according to claim 4, further comprising an ASV determination section for determining whether or not audio still video (ASV) is recorded on the DVD-Audio disk,

wherein, when said ASV determination section determines that an ASV is recorded on the DVD-Audio disk, said mode setting section sets the audio playback device into the mode of serving as the VCAP even if said visual menu determination section determines that a visual menu is not recorded on the DVD-Audio disk.

6. The DVD-Audio playback device according to claim 5, further comprising a recorded image displaying section for displaying an image previously recorded in the DVD-Audio playback device during the playback of a track recorded on the DVD-Audio disk when said ASV determination section determines that an ASV is not recorded on the DVD-Audio disk.

7. The DVD-Audio playback device according to claim 3, further comprising an ASV determination section for determining whether or not audio still video (ASV) is recorded on the DVD-Audio disk,

wherein, when said ASV determination section determines that an ASV is recorded on the DVD-Audio disk, said mode setting section prevents the audio playback device from being set into the mode of serving as the AOP or SOP even if said visual menu determination section determines that a visual menu is not recorded on the DVD-Audio disk.

8. The DVD-Audio playback device according to claim 3, wherein said visual menu determination section determines whether or not a visual menu is recorded on the DVD-Audio disk, in response to the presence or absence of any recorded AMGM_VOBS (audio manager menu video object set) on the DVD-Audio disk.

9. A DVD-Audio playback device for playing back a DVD-Audio disk, while selectively serving as a video capable audio player (VCAP), an audio only player (AOP), or a simple audio player (SOP) in accordance with a set mode, the DVD-Audio playback device comprising:

an audio still video (ASV) determination section for determining whether or not an ASV is recorded on the DVD-Audio disk; and

a mode setting section for setting the audio playback device into a mode of serving as the AOP or SOP when the ASV determination section determines that an ASV is not recorded on the DVD-Audio disk.

10. The DVD-Audio playback device according to claim 9, further comprising a recorded image displaying section for displaying an image previously recorded in the DVD-Audio playback device during the playback of a track recorded on the DVD-Audio disk when said ASV determination section determines that an ASV is not recorded on the DVD-Audio disk.

11. A method of playing back a recording medium in an audio playback device adapted for playing back audio tracks recorded on the recording medium, which is capable of recording therein a visual menu for receiving an operation from a user regarding a playback operation of the recording medium, the playback method comprising the steps of:

determining whether or not said visual menu is recorded on the recording medium;

setting said audio playback device into a mode of displaying the visual menu and playing back the audio tracks recorded on the recording medium in a playback sequence defined in accordance with the operation received by the visual menu displayed when the visual menu is determined to be recorded on the recording medium; and

setting said audio playback device into a mode of playing back the audio tracks recorded on the recording medium in a playback sequence autonomously defined without displaying a visual menu when a visual menu is determined not to be recorded on the recording medium.

12. A method of playing back a recording medium in an audio playback device adapted for playing back audio tracks recorded on the recording medium, which is capable of recording therein visual contents to be displayed in playing back an audio track, the playback method comprising the steps of:

determining whether or not said visual contents are recorded on the recording medium;

setting said audio playback device into a mode of displaying the visual contents in playing back an audio track when the visual contents are determined to be recorded on the recording medium; and

setting said audio playback device into a mode of displaying an image previously recorded in the audio playback device in playing back an audio track when the visual contents are determined not to be recorded on the recording medium.

13. A disk playback method in a DVD-Audio playback device for playing back a DVD-Audio disk, while selectively serving as a video capable audio player (VCAP), an audio only player (AOP), or a simple audio player (SOP) in accordance with a set mode, the playback method comprising the steps of:

determining whether or not a visual menu is recorded on the DVD-Audio disk; and

setting the audio playback device into a mode of serving as the AOP or SOP when a visual menu is determined not to be recorded on the DVD-Audio disk.

14. The disk playback method according to claim 13, further comprising the step of setting said audio playback device into the mode of serving as the VCAP when a visual menu is determined to be recorded on the DVD-Audio disk.

15. The disk playback method according to claim 14, further comprising the steps of:

determining whether or not audio still video (ASV) is recorded on the DVD-Audio disk; and

when an ASV is determined to be recorded on the DVD-Audio disk, setting the audio playback device into the mode of serving as the VCAP even if a visual menu is determined not to be recorded on the DVD-Audio disk.

16. The disk playback method according to claim 15, further comprising the step of displaying an image previously recorded in the DVD-Audio playback device during the playback of a track recorded on the DVD-Audio disk when an ASV is determined not to be recorded on the DVD-Audio disk.

17. The disk playback method according to claim 13, further comprising the step of determining whether or not audio still video (ASV) is recorded on the DVD-Audio disk, and

wherein, when an ASV is determined to be recorded on the DVD-Audio disk, the audio playback device is prevented from being set into the mode of serving as the AOP or SOP even if a visual menu is determined not to be recorded on the DVD-Audio disk.

18. The disk playback method according to claim 13, wherein the determination of whether or not a visual menu is recorded on the DVD-Audio disk is performed in response to the presence or absence of a recorded AMGM VOBS on the DVD-Audio disk.

19. A disk playback method in a DVD-Audio playback device for playing back a DVD-Audio disk, while selectively serving as a video capable audio player (VCAP), an audio only player (AOP), or a simple audio player (SOP) in accordance with a set mode, the disk playback method comprising the steps of:

determining whether or not audio still video (ASV) is recorded on the DVD-Audio disk; and

setting the audio playback device into a mode of serving as the AOP or SOP when an ASV is determined not to be recorded on the DVD-Audio disk.

20. The disk playback method according to claim 19, further comprising the step of displaying an image previously recorded in he DVD-Audio playback device during the playback of a track recorded on the DVD-Audio disk when an ASV is determined not to be recorded on the DVD-Audio disk.