Optical information recording medium and optical information recording medium reproducing apparatus

Abstract

An optical information recording medium of a CAV or a zone CAV, in which a groove wobbling continuously is formed in advance so as to record information to a groove and a land abutting the groove, the groove alternately has a first wobble position in which a wobble fundamental wave form has been modulated by groove address information, and a second wobble position of the wobble fundamental wave form, and in grooves of both sides by which the land is interposed, the first wobble position and the second wobble position are different from each other in position.

Description

technical field

[0001] For example, the present disclosure relates to an optical information recording medium, and an optical information recording medium reproducing apparatus applicable to a recordable optical disc. Background technique

[0002] In the past, optical discs in which information is recorded or reproduced by using laser beams have been practically used. As for the types of optical disks, there are read-only type, write-once type, and rewritable type. In the write-once type and the write-once type, it is necessary to record address information indicating the position of the optical disc in advance in order to record the information.

[0003] There are two methods for recording address information. One of them is a method of recording address information using pre-format pits. Another method is a method of modulating a signal forming a groove called wobble-to-groove by address information. Recording the pre-format pits has the problems of a reduction in the ...

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