OPTICAL DISC, RECORDING APPARATUS AND METHOD FOR OPTICAL DISC, AND ITS REPRODUCING METHOD

Title:

OPTICAL DISC, RECORDING APPARATUS AND METHOD FOR OPTICAL DISC, AND ITS REPRODUCING METHOD

Document Type and Number:

WIPO Patent Application WO/2002/050821

Kind Code:

A1

Abstract:

A recording method for an optical disc which records data for identifying an optical disc on the optical disc wherein the identifying data is recorded by irradiating an optical disc having a substrate made of a synthetic resin with an uneven pattern on one face and a reflection film made of a metal material so provided as to cover the uneven pattern of the substrate with an optical beam to cause the previously formed uneven pattern to change physically.

Inventors:

SAKO YOICHIRO (JP)
KIHARA TAKASHI (JP)
NAKAGAWA TOMIHIRO (JP)
INOKUCHI TATSUYA (JP)

Application Number:

PCT/JP2001/010909

Publication Date:

June 27, 2002

Filing Date:

December 12, 2001

Export Citation:

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Assignee:

SONY CORP (JP)
SAKO YOICHIRO (JP)
KIHARA TAKASHI (JP)
NAKAGAWA TOMIHIRO (JP)
INOKUCHI TATSUYA (JP)

International Classes:

G11B7/007; G11B7/24094; G11B7/24097; G11B7/242; G11B7/258; G11B7/2585; G11B7/26; G11B20/00; G11B20/10; G11B20/12; G11B20/14; G11B27/034; G11B27/30; H03M5/00; H03M13/00; (IPC1-7): G11B7/0045; G11B7/007; G11B7/24; G11B20/10; G11B20/12

Domestic Patent References:

WO1996010250A1

1996-04-04

Foreign References:

JPH10134415A	1998-05-22
JPH05210874A	1993-08-20
EP0759611A2	1997-02-26

Other References: