Video or audio recording and reproducing apparatus
AssigneeHitachi, Ltd.
InventorsHiroaki Ono, Shinichi Nonaka
Life of this patent
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Abstract
The same contents having different recording rates are recorded on a multi-layer disk. A plurality of contents or the same contents having different recording rates are independently recorded respectively in different layers of an optical disk having a plurality of recording layers. In order to record a plurality of contents or the same contents having different recording rates in parallel at that time, recording on the multi-layer optical disk is conducted by repeating an operation of dividing each content into recording units, recording a recording unit of one kind of information in a recording layer, and recording a recording unit of the other kind of information in a different recording layer.
Claims15
A video or audio recording and reproducing apparatus comprising:
- an information converter which converts an identical content into video or audio data of a first recording rate and video or audio data of a second recording rate that is different from the first recording rate to be recorded on an optical disk;
- a recorder which records the video or audio data of the first recording rate and the video or audio data of the second recording rate on the optical disk;
- and
- a reproducer which reproduces the video or audio data recorded on the optical disk,
- wherein when the optical disk has at least three recording layers, then the recorder:
- records the video or audio data of the first recording rate in a first radial region on a first layer of the optical disk;
- makes an inter-layer jump to a second layer of the optical disk different from said first layer;
- records the video or audio data of the second recording rate in the first radial region on said second layer,
- makes an inter-layer jump to a third layer of the optical disk different from the first and second layers,
- records the video or audio data of the second recording rate on the third layer in the first radial region, and
- after recording in the first radial region, records the data of the first recording rate or the second recording rate in a second radial region different from the first radial region.
A method of recording audio and/or video content to an optical disk, the method comprising:
- receiving the content at an input of a recording apparatus;
- generating first and second recording units from the content such that the first recording units correspond to a first information rate and the second recording units correspond to a second information rate;
- determining three or more layers of the optical disk for writing the first recording units in a first radial region and a first recording direction;
- writing a plurality of the first recording units to the optical disk in the first radial region and the first recording direction;
- changing to a second layer of the optical disk when writing the plurality of first recording units is complete;
- writing one or more of the second recording units to the second layer of the optical disk in the first radial region and a second recording direction;
- changing to a third layer of the optical disk when writing the one or more second recording units is complete;
- and
- writing at least one of the first or second recording units to the third layer of the optical disk in a second radial region different from the first radial region.
Dependencies are inferred from the claim text.