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US 2014/0126339 A1Published application
Information recording medium, and recording method and reproducing method thereof
AssigneeJVC KENWOOD Corporation
InventorYasuhiro Ueki
Life of this patent
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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.
Claims6
A disc shaped information recording medium, comprising:
- (a) a lead-in area provided in an inner circumferential side of the disc shaped information recording medium, the lead-in area including:
- (1) a first read only area in which information is formed in a plurality of information tracks in spiral as a first pit area having a first physical characteristic in a unit of first specific block,
- (2) a second read only area in which information is formed in a plurality of tracks in spiral allocated in an outer circumferential side of the first read only area as a second pit area having a second physical characteristic in a unit of second specific block, wherein the second pit area is different from the first pit area in a physical characteristic,
- and
- (3) a third read only area in which information is formed in a plurality of tracks in spiral as a third pit area having a third physical characteristic in a unit of third specific block, allocated between the first pit area and the second pit area,
- wherein the first pit area is connected continuously to the third pit area and the third pit area is connected continuously to the second pit area,
- wherein each of the first specific block in the first pit area, the second specific block in the second pit area and the third specific block in the third pit area is formed in a data configuration having a logically the same logic block,
- wherein the data configuration of the logic block is formed by an address unit having a specific amount of information constituted by a plurality of lines of combination of a specific sync and a specific unit of data, and
- further wherein the logic block is formed in a block having a specific amount of information by arranging a plurality of the address units.
6 more elements
Dependencies are inferred from the claim text.