Video data recording medium, video data recording apparatus and video data playback apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsTohru Uno, Yoshiyuki Ishizawa
Life of this patent
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Abstract
Video data divided into a plurality of cells, attribute information for specifying the playback order of the plurality of cells, and a flag for specifying whether the playback can be effected or not for each of the plurality of cells are recorded on an optical disk. In a playback apparatus, the cell which is specified to be inhibited from being played back by the flag is not played back when a plurality of cells are played back based on the playback order specified by the attribute information.
Claims11
A recording medium, comprising:
- a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data;
- a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and managing other video data as playable cells;
- and
- a third area provided in the second area and configured to record start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures.
A recording/playback apparatus for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, and (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, said recording/playback apparatus comprising:
- recording means for recording start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures.
A recording/playback method for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, and (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, said recording/playback method comprising a step of:
- recording start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures.
A recording method for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, and (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, said recording method comprising a step of:
- recording start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures.
A recording/playback apparatus for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, and (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, said recording/playback apparatus comprising:
- recording means for recording start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures;
- and
- reproducing means for reproducing a video image which is positioned after a specified position corresponding to the end address information of said unnecessary cell, wherein said reproducing means starts a video coding process from I picture arranged at a head of the group of pictures, and outputs said video image corresponding to the next position of said specified position.
A recording/playback method for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, and (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, said recording/playback method comprising steps of:
- recording start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures;
- and
- reproducing a video image which is positioned after a specified position corresponding to the end address information of said unnecessary cell, wherein said reproducing starts a video coding process from I picture arranged at a head of the group of pictures, and outputs said video image corresponding to the next position of said specified position.
A playback method for recording and playing back video information by using a recordable/playable medium, said recordable/playable medium comprising (i) a first area configured to record main video data, wherein said main video data is defined as a plurality of units, and each of the units comprises a group of pictures (GOP) respectively, said first area having a partial area in which specified video data exists as a part of said main video data, (ii) a second area configured to record management information, wherein said management information includes information for managing said specified video data as an unnecessary cell, and other video data as playable cells, and (iii) a third area provided in a second area and configured to record start and end address information of said unnecessary cell, wherein said start and end address information is included in said management information and specifies a unit of video field in the group of pictures, said playback method comprising a step of:
- reproducing a video image which is positioned after a specified position corresponding to the end address information of said unnecessary cell, wherein said reproducing starts a video coding process from I picture arranged at a head of the group of pictures, and outputs said video image corresponding to the next position of said specified position.
Dependencies are inferred from the claim text.