System of sharing objects having a plurality of contents
AssigneeKabushiki Kaisha Toshiba
InventorsHitoshi Otomo, Shigeru Todokoro, Hideki Mimura
Life of this patent
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Abstract
In order to use video contents created according to DVD video in DVD audio, audio and video sub-directories are located under a root directory. The video sub-directory includes video contents and their management information. The audio sub-directory includes audio contents and their management information. The video management information can only access the video contents. However, the audio management information can access not only the audio contents but also the video contents.
Claims20
A digital information playback apparatus for playing back audio or video contents from a digital information medium, the medium including an audio data area for storing audio contents, a video data area for storing video contents, an audio management block for storing audio management information and configured to have an audio management backup block for storing a backup version of said audio management information, and a video management block configured to store video management information, said audio management information includes search information for accessing any of the audio contents and video contents which are recorded in the audio data area and video data area, respectively, and said audio management information includes an audio manager information management table, said audio management information further includes a search pointer table, and said search pointer table includes, a first search pointer including address information of the audio contents, and a second search pointer including address information of the video contents, the apparatus comprising:
- management information extraction means for extracting contents of the audio management information, including said search pointer table which includes said first search pointer including address information of the audio contents and a second search pointer including address information of the video contents from said digital information medium;
- audio contents extraction means for extracting contents of the audio contents based on the first search pointer;
- and
- video contents extraction means for extracting contents of the video contents based on the second search pointer.
An information recording method for recording information on an information recording medium, the medium including an audio data area for storing audio contents, a video data area for storing video contents, an audio management block for storing audio management information and configured to have an audio management backup block for storing a backup version of said audio management information, and a video management block configured to store video management information, said audio management information includes search information for accessing any of the audio contents and video contents which are recorded in the audio data area and video data area, respectively, and said audio management information includes an audio manager information management table, said audio management information further includes a search pointer table, and said search pointer table includes, a first search pointer including address information of the audio contents, and a second search pointer including address information of the video contents, comprising:
- recording audio management information in said audio management block and audio contents in said audio data area;
- and
- recording video management information in said video management block and video contents in said video data area.
An information playback method for playing back information from an information recording medium, the medium including an audio data area for storing audio contents, a video data area for storing video contents, an audio management block for storing audio management information and configured to have an audio management backup block for storing a backup version of said audio management information, and a video management block configured to store video management information, said audio management information includes search information for accessing any of the audio contents and video contents which are recorded in the audio data area and video data area, respectively, and said audio management information includes an audio manager information management table, said audio management information further includes a search pointer table, and said search pointer table includes, a first search pointer including address information of the audio contents, and a second search pointer including address information of the video contents, the method comprising:
- accessing the audio or video contents based on the audio management information including said search pointer table which includes said first search pointer including address information of the audio contents and a second search pointer including address information of the video contents to play back contents thereof;
- and
- accessing the video contents based on the second search pointer to play back contents thereof.
A digital information recording medium arranged for reading or recording by an apparatus, the medium comprising:
- an audio data area for storing audio contents;
- an video data area for storing video contents;
- an audio management block for storing audio management information and configured to have an audio management backup block for storing a backup version of said audio management information;
- and
- a video management block configured to store video management information,
- wherein said audio management information includes search information for accessing any of the audio contents and video contents which are recorded in the different audio data area and video data area, respectively, and
- said audio management information includes an audio manager information management table,
- wherein said audio management information further includes a search pointer table, and
- wherein said search pointer table includes:
- a first search pointer including address information of the audio contents, and
- a second search pointer including address information of the video contents.
A digital information playback apparatus, for playing back audio or video contents from a digital information medium, which has the audio contents and an audio management block for managing playback of the audio contents, and the video contents and a video management block for managing playback of the video contents, and in which said audio management block includes audio management information for managing access to the audio and video contents, the apparatus comprising:
- management information extraction means for extracting contents of the audio management information from said digital information medium;
- audio contents extraction means for extracting contents of the audio contents based on the contents of the audio management information;
- and
- video contents extraction means for extracting contents of the video contents based on other contents of the audio management information,
- wherein said audio management block is configured to have an audio management backup block for storing a backup version of said audio management information, and said audio management information includes an audio manager information management table,
- wherein said digital information medium includes audio data which is digitally converted by a predetermined sampling frequency selected from a plurality of different sampling frequencies, and a predetermined number of quantization bits selected from a plurality of different numbers of quantization bits, and attribute information indicating the predetermined sampling frequency and the predetermined number of quantization bits used in the audio data,
- said management information extraction means detects the predetermined sampling frequency and the predetermined number of quantization bits from the attribute information, and
- said apparatus further comprises display means for displaying the detected predetermined sampling frequency and the detected predetermined number of quantization bits.
Dependencies are inferred from the claim text.