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US 8,432,784 B2Granted
Information recording medium, and recording method and reproducing method thereof
AssigneeJVC KENWOOD Corporation
InventorYasuhiro Ueki
Life of this patent
Estimating the term…
Abstract
An information recording medium in which bottoms of a guide groove and a pit array formed on a disc substrate are allocated on a same flat plane and shaped in flat. Further, in a transition area from a pit array to a guide groove or from a guide groove to a pit array, the information recording medium is provided with an intermediate area composed of a pit array of which height changes from a height between a bottom and a side of a groove to another height between the bottom and a side of the pit array.
Claims5
An information recording medium having a plurality of information tracks spirally comprising:
- a control data area in which information is formed in a track as a first pit area having a first physical characteristic in a first unit of correction block, and recorded with control data that includes type information indicating a type of physical characteristic of the information recording medium;
- a first read only area in which information is formed in a track as a second pit area having a second physical characteristic in a second unit of correction block;
- an information track area in which information is recorded in a third unit of correction block;
- and
- a read-only intermediate area in which information is formed in a track as a third pit area having a third physical characteristic in a fourth unit of correction block, allocated between the control data area and the first read only area,
- wherein a configuration of the third physical characteristic in an area in the intermediate area adjacent to the control data area is different from the configuration of the third physical characteristic in another area in the intermediate area adjacent to the first read only area, and
- further wherein the third physical characteristic varies physically in the intermediate area so as to connect the control data area to the first read only area continuously.
4 more elements
Dependencies are inferred from the claim text.