Information recording medium, manufacturing method thereof and information recording regenerating system

A technology for information recording and manufacturing methods, applied in optical recording/reproducing/erasing methods, optical reproduction systems, information arrangement, etc., and can solve problems such as crosstalk
CN101101764AInactive Publication Date: 2008-01-09HITACHT MAXELL LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHT MAXELL LTD
Publication Date
2008-01-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an information recording medium with less amplitude variation of dither signal induced by crosstalk, in added type or a rewritten type medium with narrow track-ization of track. A recording track winding by predetermined wobble-periods T is formed in spiral shape by the track pitch P, and main area of said wobble is formed, and the added type or a rewritten type information-recording-medium of the other area is formed in other phase, the wobble phase is relative to the said main area in arbitrary tracks, and the phase offset of the wobble of said main area of a track of adjoining one side is set as delta 1 and the phase offset of the wobble of said main area of a track of adjoining another side is set as delta 2, the ldelta1 l+ldelta2l. is controlled in the range of x2pirad.<=ldelta1 l+ldelta2l.<=(1+2piP / T+0.05) x2pirad.
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Description

technical field

[0001] The present invention relates to an information recording medium and a manufacturing method thereof, an information recording and reproducing device, and a phase adjustment method of a recording track, in particular to an information recording medium capable of high-density recording with wobble grooves, an information recording and reproducing system, and a phase adjustment method of a recording track . Background technique

[0002] In the field of optical discs, which are one of the information recording media, ROMs such as CDs and DVDs that record large-capacity information can be copied cheaply only by duplicating the prepit formed in advance on the master disc during the forming process. The medium has gained widespread popularity. In addition, add-on media such as CD-R and DVD-R, and rewritable media such as CD-RW and DVD-RW, which are playback-compatible with ROM media, are also widely used.

[0003] However, in the technical field of informat...

Claims

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