BR9703352A - Processo de fabricação de um disco mestre para a realização de matrizes de prensagem de discos óticos que possuem uma marcação, notadamente anti-pirataria, disco mestre, matriz de prensagem e disco ótico obtidos - Google Patents

Processo de fabricação de um disco mestre para a realização de matrizes de prensagem de discos óticos que possuem uma marcação, notadamente anti-pirataria, disco mestre, matriz de prensagem e disco ótico obtidos

Info

Publication number
BR9703352A
BR9703352A BR9703352-9A BR9703352A BR9703352A BR 9703352 A BR9703352 A BR 9703352A BR 9703352 A BR9703352 A BR 9703352A BR 9703352 A BR9703352 A BR 9703352A
Authority
BR
Brazil
Prior art keywords
pressing
marking
optical disc
master
manufacturing
Prior art date
Application number
BR9703352-9A
Other languages
English (en)
Inventor
Pascal Andre
Jean Ledieu
Original Assignee
Digipress Sa
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 Digipress Sa filed Critical Digipress Sa
Publication of BR9703352A publication Critical patent/BR9703352A/pt

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the record carrier
    • 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
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

"PROCESSO DE FABRICAçãO DE UM DISCO MESTRE PARA A REALIZAçãO DE MATRIZES DE PRENSAGEM DE DISCOS óTICOS QUE POSSUEM UMA MARCAçãO, NOTADAMENTE ANTI-PIRATARIA, DISCO MESTRE, MATRIZ DE PRENSAGEM E DISCO óTICO OBTIDOS". A invenção se refere a um processo de fabricação de um disco mestre para a realização de matriz de prensagem de discos óticos que possuem uma marcação, notadamente anti-pirataria. Esse processo consiste em interpor, entre o prato giratório (3) de uma máquina de gravação de informações e um suporte (1) revestido com uma camada de resina fotossensível (2), uma camada (7) formada por zonas de refletividades diferentes para os comprimentos de onda do feixe luminoso (4) que servem para a gravação das informações e que definem uma marcação A invenção encontra aplicação, em especial, no domínio da fabricação de discos óticos que possuem uma marcação.
BR9703352-9A 1996-05-31 1997-05-30 Processo de fabricação de um disco mestre para a realização de matrizes de prensagem de discos óticos que possuem uma marcação, notadamente anti-pirataria, disco mestre, matriz de prensagem e disco ótico obtidos BR9703352A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9606761A FR2749432B1 (fr) 1996-05-31 1996-05-31 Procede de fabrication d'un disque maitre pour la realisation de matrices de pressage de disques optiques comportant un marquage, notamment anti-piratage, disque maitre, matrice de pressage et disque optique obtenu

Publications (1)

Publication Number Publication Date
BR9703352A true BR9703352A (pt) 2003-08-26

Family

ID=9492619

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9703352-9A BR9703352A (pt) 1996-05-31 1997-05-30 Processo de fabricação de um disco mestre para a realização de matrizes de prensagem de discos óticos que possuem uma marcação, notadamente anti-pirataria, disco mestre, matriz de prensagem e disco ótico obtidos

Country Status (5)

Country Link
EP (1) EP0810593A1 (pt)
JP (1) JPH1055571A (pt)
BR (1) BR9703352A (pt)
CA (1) CA2206364A1 (pt)
FR (1) FR2749432B1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5958651A (en) * 1996-07-11 1999-09-28 Wea Manufacturing Inc. Methods for providing artwork on plastic information discs
US6631359B1 (en) * 1999-09-10 2003-10-07 Dphi Acquisitions, Inc. Writeable medium access control using a medium writeable area
US8369562B2 (en) 2007-03-30 2013-02-05 Hitachi Global Storage Technologies Netherlands B.V. Encryption methods for patterned media watermarking
ES2332393B2 (es) * 2007-04-12 2010-06-23 Universidad De Granada Metodo optico y aparato para la deteccion de copias piratas de cds.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0648546B2 (ja) * 1984-07-14 1994-06-22 日本ビクター株式会社 情報記録担体の製造法
JP3109866B2 (ja) * 1990-11-17 2000-11-20 太陽誘電株式会社 光学式情報記録担体用基板及びその製造方法
DE4311683C2 (de) * 1993-04-08 1996-05-02 Sonopress Prod Plattenförmiger optischer Speicher und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
CA2206364A1 (en) 1997-11-30
EP0810593A1 (fr) 1997-12-03
FR2749432A1 (fr) 1997-12-05
FR2749432B1 (fr) 1998-07-10
JPH1055571A (ja) 1998-02-24

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]