WO2000067257A3 - Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system - Google Patents

Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system Download PDF

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Publication number
WO2000067257A3
WO2000067257A3 PCT/JP2000/002750 JP0002750W WO0067257A3 WO 2000067257 A3 WO2000067257 A3 WO 2000067257A3 JP 0002750 W JP0002750 W JP 0002750W WO 0067257 A3 WO0067257 A3 WO 0067257A3
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WO
WIPO (PCT)
Prior art keywords
optical disk
recording
reproducing
disk
data
Prior art date
Application number
PCT/JP2000/002750
Other languages
French (fr)
Other versions
WO2000067257A2 (en
Inventor
Takahiro Nagai
Hideshi Ishihara
Yuji Takagi
Takashi Yumiba
Mamoru Shoji
Mitsuaki Oshima
Shunji Ohara
Motoshi Ito
Takashi Ishida
Atsushi Nakamura
Tadashi Jahana
Kouhei Nakata
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to KR1020017013674A priority Critical patent/KR100665440B1/en
Publication of WO2000067257A2 publication Critical patent/WO2000067257A2/en
Publication of WO2000067257A3 publication Critical patent/WO2000067257A3/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates

Abstract

An optical disk of recording type on which data is recordable is provided which includes a data recording and reproducing area (102) for recording data therein and reproducing data therefrom, and a read-only disk identification information area (104) for recording disk identification information (107) for identifying the optical disk therein. In the optical disk, the disk identification information (107) is formed by removing a reflection film formed on the optical disk in a strip shape. The disk identification information (107) includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording therein encrypted data, which is encrypted using information including the disk identification information for identifying the optical disk as a key.
PCT/JP2000/002750 1999-04-28 2000-04-27 Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system WO2000067257A2 (en)

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JP11/122104 1999-04-28
JP12210499 1999-04-28
JP12819799 1999-05-10
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JP11/299635 1999-10-21
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