CH570669A5 - - Google Patents

Info

Publication number
CH570669A5
CH570669A5 CH1247073A CH1247073A CH570669A5 CH 570669 A5 CH570669 A5 CH 570669A5 CH 1247073 A CH1247073 A CH 1247073A CH 1247073 A CH1247073 A CH 1247073A CH 570669 A5 CH570669 A5 CH 570669A5
Authority
CH
Switzerland
Application number
CH1247073A
Original Assignee
Philips Nv
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
Priority claimed from NL7212001A external-priority patent/NL7212001A/xx
Priority claimed from NL7212045A external-priority patent/NL7212045A/xx
Application filed by Philips Nv filed Critical Philips Nv
Publication of CH570669A5 publication Critical patent/CH570669A5/xx

Links

Classifications

    • 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
    • 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
CH1247073A 1972-09-02 1973-08-30 CH570669A5 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7212001A NL7212001A (fr) 1972-09-02 1972-09-02
NL7212045A NL7212045A (fr) 1972-09-05 1972-09-05

Publications (1)

Publication Number Publication Date
CH570669A5 true CH570669A5 (fr) 1975-12-15

Family

ID=26644798

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1247073A CH570669A5 (fr) 1972-09-02 1973-08-30

Country Status (10)

Country Link
JP (1) JPS5652361B2 (fr)
AR (1) AR200876A1 (fr)
AT (1) AT347147B (fr)
BE (1) BE804332A (fr)
CA (1) CA998173A (fr)
CH (1) CH570669A5 (fr)
ES (2) ES418367A1 (fr)
FR (1) FR2199604B1 (fr)
GB (1) GB1447066A (fr)
IT (1) IT990424B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603888B2 (de) * 1975-02-24 1977-12-15 MCA Disco-Vision, Znc, Universal City, Calif. (V-StA.) Verfahren zum herstellen einer nachbildungsmatrize fuer informationstraeger und matrize zur bildung von videoplattenreproduktionen
JPS6034171B2 (ja) * 1977-04-05 1985-08-07 ソニー株式会社 光学記録方式によるビデオデイスク原盤
JPS6166242A (ja) * 1984-09-06 1986-04-05 Matsushita Electric Ind Co Ltd 情報記録原盤
DE3737455A1 (de) * 1986-11-06 1988-05-19 Westinghouse Electric Corp Einrichtung und verfahren zum erzeugen von farbmustern
EP0286326B1 (fr) * 1987-04-08 1994-06-15 Nippon Telegraph and Telephone Corporation Méthode et appareil de fabrication d'une matrice de disque optique et d'un disque optique
JPH01235044A (ja) * 1988-03-14 1989-09-20 Nippon Telegr & Teleph Corp <Ntt> 光ディスク基板およびその製造方法
JP2735569B2 (ja) * 1988-06-29 1998-04-02 日本電気ホームエレクトロニクス株式会社 光ディスク原盤の製造方法
JP2000113452A (ja) * 1998-10-07 2000-04-21 Sony Corp 光ディスクの製造装置、光ディスクの製造方法、光ディスク及び光ディスクの再生方法

Also Published As

Publication number Publication date
GB1447066A (en) 1976-08-25
FR2199604A1 (fr) 1974-04-12
DE2342285A1 (de) 1974-03-14
ES418367A1 (es) 1976-04-16
ES439625A1 (es) 1977-03-01
AT347147B (de) 1978-12-11
BE804332A (fr) 1974-02-28
AR200876A1 (es) 1974-12-27
JPS4993002A (fr) 1974-09-04
DE2342285B2 (de) 1977-02-03
JPS5652361B2 (fr) 1981-12-11
ATA755773A (de) 1978-04-15
FR2199604B1 (fr) 1979-08-03
IT990424B (it) 1975-06-20
CA998173A (en) 1976-10-05
AU5974673A (en) 1975-03-06

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Legal Events

Date Code Title Description
PL Patent ceased