GB8325085D0 - Optical data record carrier - Google Patents

Optical data record carrier

Info

Publication number
GB8325085D0
GB8325085D0 GB838325085A GB8325085A GB8325085D0 GB 8325085 D0 GB8325085 D0 GB 8325085D0 GB 838325085 A GB838325085 A GB 838325085A GB 8325085 A GB8325085 A GB 8325085A GB 8325085 D0 GB8325085 D0 GB 8325085D0
Authority
GB
United Kingdom
Prior art keywords
data record
optical data
record carrier
carrier
optical
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB838325085A
Other versions
GB2130423A (en
GB2130423B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of GB8325085D0 publication Critical patent/GB8325085D0/en
Publication of GB2130423A publication Critical patent/GB2130423A/en
Application granted granted Critical
Publication of GB2130423B publication Critical patent/GB2130423B/en
Expired legal-status Critical Current

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
GB08325085A 1982-09-20 1983-09-20 Optical data record carrier and method of manufacturing such carrier Expired GB2130423B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57163450A JPS5954051A (en) 1982-09-20 1982-09-20 Optical information recording carrier and its production

Publications (3)

Publication Number Publication Date
GB8325085D0 true GB8325085D0 (en) 1983-10-19
GB2130423A GB2130423A (en) 1984-05-31
GB2130423B GB2130423B (en) 1986-02-19

Family

ID=15774105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08325085A Expired GB2130423B (en) 1982-09-20 1983-09-20 Optical data record carrier and method of manufacturing such carrier

Country Status (5)

Country Link
JP (1) JPS5954051A (en)
DE (1) DE3333969C2 (en)
FR (1) FR2533346B1 (en)
GB (1) GB2130423B (en)
NL (1) NL8303194A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171436A (en) * 1984-09-14 1986-04-12 Hitachi Ltd Optomagnetic recording medium
EP0240752B1 (en) * 1986-03-07 1992-06-03 Matsushita Electric Industrial Co., Ltd. Erasable optical disk having an improved optically transparent substrate
FR2676853B1 (en) * 1991-05-21 1993-12-03 Thomson Csf OPTICAL WRITING AND READING METHOD ON HIGH DENSITY STORAGE INFORMATION MEDIUM.
US5910337A (en) * 1992-04-20 1999-06-08 International Business Machines Corporation Phase-averaging resist coating for reflectivity control
US5764619A (en) 1995-04-07 1998-06-09 Matsushita Electric Industrial Co., Ltd. Optical recording medium having two separate recording layers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2038874B2 (en) * 1970-08-05 1973-01-04 Teldec Telefunkendecca Schallplatten Gmbh, 2000 Hamburg Method for recording signals on a memory
FR2279193A1 (en) * 1974-07-16 1976-02-13 Thomson Brandt PROCESS FOR MAKING VIDEO-FREQUENCY SIGNAL RECORDING DISCS, AND DISK THUS REALIZED
FR2288370A1 (en) * 1974-10-18 1976-05-14 Thomson Brandt IMPROVEMENTS TO OPTICAL-READING INFORMATION MEDIA
JPS6023407B2 (en) * 1975-05-20 1985-06-07 ソニー株式会社 Method for manufacturing information recording media
DE2615605C2 (en) * 1976-04-09 1978-06-01 Polygram Gmbh, 2000 Hamburg Disc-shaped information carrier and method for its manufacture
JPS53124404A (en) * 1977-04-06 1978-10-30 Toshiba Corp Production of information carrier
NL7803069A (en) * 1978-03-22 1979-09-25 Philips Nv MULTI-LAYER INFORMATION DISK.
NL8006947A (en) * 1980-12-22 1982-07-16 Philips Nv METHOD FOR MANUFACTURING AN OPTICALLY READABLE INFORMATION CARRIER
JPS57172548A (en) * 1981-04-17 1982-10-23 Toshiba Corp Original disk for medium for reproducing stored information

Also Published As

Publication number Publication date
JPS5954051A (en) 1984-03-28
GB2130423A (en) 1984-05-31
FR2533346A1 (en) 1984-03-23
FR2533346B1 (en) 1985-10-25
DE3333969C2 (en) 1986-10-16
NL8303194A (en) 1984-04-16
GB2130423B (en) 1986-02-19
DE3333969A1 (en) 1984-03-22
JPH0352141B2 (en) 1991-08-09

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940920