Information storage medium, recording and reproducing device, and recording and reproducing method
A technology for information recording and media, applied in the direction of optical recording/reproduction/erasing methods, information storage, recording information storage, etc., can solve the problems of damaged areas, damage, etc., and achieve the effect of reducing impact and managing continuous defect replacement
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[0040] Hereinafter, the present invention will be described more fully with reference to exemplary embodiments of the invention.
[0041] In the multilayer information storage medium, each layer may have at least one optical power control (OPC) area allocated toward the inner circumference and in such a manner as not to overlap with the OPC areas of adjacent layers at the same radius.
[0042] An OPC area of each layer may have at least one adjacent buffer area on that layer, and an OPC area between two OPC areas among a plurality of OPC areas corresponding to the number of layers may have multiple adjacent buffer zone.
[0043] The buffer area may have a size larger than a physical area corresponding to an interlayer eccentricity according to a disc standard. For example, if it is defined that the disc must be manufactured with an error of interlayer eccentricity smaller than a radius of 0.1 mm, the buffer area may have a size equal to or greater than a radius of 0.1 mm. ...
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