NL192279B - Optical recording medium and optical record carrier. - Google Patents

Optical recording medium and optical record carrier.

Info

Publication number
NL192279B
NL192279B NL8203213A NL8203213A NL192279B NL 192279 B NL192279 B NL 192279B NL 8203213 A NL8203213 A NL 8203213A NL 8203213 A NL8203213 A NL 8203213A NL 192279 B NL192279 B NL 192279B
Authority
NL
Netherlands
Prior art keywords
optical
recording medium
record carrier
optical recording
optical record
Prior art date
Application number
NL8203213A
Other languages
Dutch (nl)
Other versions
NL8203213A (en
NL192279C (en
Original Assignee
Rca Corp
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 Rca Corp filed Critical Rca Corp
Publication of NL8203213A publication Critical patent/NL8203213A/en
Publication of NL192279B publication Critical patent/NL192279B/en
Application granted granted Critical
Publication of NL192279C publication Critical patent/NL192279C/en

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
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
NL8203213A 1981-08-17 1982-08-16 Optical recording medium and optical record carrier. NL192279C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29316981A 1981-08-17 1981-08-17
US29316981 1981-08-17

Publications (3)

Publication Number Publication Date
NL8203213A NL8203213A (en) 1983-03-16
NL192279B true NL192279B (en) 1996-12-02
NL192279C NL192279C (en) 1997-04-03

Family

ID=23127956

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8203213A NL192279C (en) 1981-08-17 1982-08-16 Optical recording medium and optical record carrier.

Country Status (5)

Country Link
JP (2) JPS5838193A (en)
DE (1) DE3229573A1 (en)
FR (1) FR2531798B1 (en)
GB (1) GB2105094B (en)
NL (1) NL192279C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451915A (en) * 1982-04-15 1984-05-29 Burroughs Corporation Optical storage system employing a multi-layer optical medium
GB2121227A (en) * 1982-05-11 1983-12-14 Nigel Geoffrey Ley Optical memory recording disc
JPS5990248A (en) * 1982-11-15 1984-05-24 Sony Corp Information recording medium
GB8309447D0 (en) * 1983-04-07 1983-05-11 Combined Tech Corp Plc Optical data storage
NL8301632A (en) * 1983-05-09 1984-12-03 Philips Nv REGISTRATION HOLDER IN WHICH INFORMATION CAN BE REGISTERED AND READ OUT BY OPTICAL ROAD.
US4544443A (en) * 1983-05-13 1985-10-01 Shap Kabushiki Kaisha Method for manufacturing an optical memory element
US4673602A (en) * 1984-06-13 1987-06-16 Sumitomo Bakelite Company Limited Composite substrate plate for magnetic or optical disk and process for production thereof
JPH02177030A (en) * 1988-12-27 1990-07-10 Sharp Corp Optical memory element
US5099469A (en) * 1990-02-20 1992-03-24 Del Mar Avionics Process for manufacturing an optical disc master

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069487A (en) * 1974-12-26 1978-01-17 Canon Kabushiki Kaisha Recording member and process for recording
JPS5247740A (en) * 1975-10-14 1977-04-15 Canon Inc Reproducing process
JPS52138101A (en) * 1976-05-14 1977-11-18 Hitachi Ltd Formation of a concavo-convex image
FR2365854A1 (en) * 1976-09-24 1978-04-21 Thomson Brandt METHOD OF MANUFACTURING AN OPTICALLY RECORDABLE AND READABLE INFORMATION MEDIA AND MEDIA OBTAINED BY SUCH A PROCESS
US4216501A (en) * 1977-03-28 1980-08-05 Rca Corporation Optical anti-reflective information record
US4285056A (en) * 1979-10-17 1981-08-18 Rca Corporation Replicable optical recording medium
JPS56119947A (en) * 1980-02-23 1981-09-19 Sharp Corp Information recording disc
JPS56156144U (en) * 1980-04-21 1981-11-21
US4383311A (en) * 1980-10-21 1983-05-10 Rca Corporation Optical recording medium and information record with indented overcoat
JP2939562B2 (en) * 1990-05-24 1999-08-25 日本電信電話株式会社 Direction correction method for small diameter pipe burial and small diameter pipe burying device

Also Published As

Publication number Publication date
GB2105094A (en) 1983-03-16
NL8203213A (en) 1983-03-16
DE3229573C2 (en) 1992-05-21
JPH0430095B2 (en) 1992-05-20
JPH0821178B2 (en) 1996-03-04
JPH0547040A (en) 1993-02-26
JPS5838193A (en) 1983-03-05
FR2531798A1 (en) 1984-02-17
NL192279C (en) 1997-04-03
FR2531798B1 (en) 1987-04-30
DE3229573A1 (en) 1983-02-24
GB2105094B (en) 1985-10-09

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Lapsed because of reaching the maxim lifetime of a patent

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