FR2386883A1 - Optical scanning video disc recording system - has composite disc with glass disc which provides some internally reflected light and some transmitted light (NL 9.10.78) - Google Patents

Optical scanning video disc recording system - has composite disc with glass disc which provides some internally reflected light and some transmitted light (NL 9.10.78)

Info

Publication number
FR2386883A1
FR2386883A1 FR7810130A FR7810130A FR2386883A1 FR 2386883 A1 FR2386883 A1 FR 2386883A1 FR 7810130 A FR7810130 A FR 7810130A FR 7810130 A FR7810130 A FR 7810130A FR 2386883 A1 FR2386883 A1 FR 2386883A1
Authority
FR
France
Prior art keywords
disc
light
recording system
composite
provides
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.)
Withdrawn
Application number
FR7810130A
Other languages
French (fr)
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of FR2386883A1 publication Critical patent/FR2386883A1/en
Withdrawn legal-status Critical Current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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

A video disc recording system uses a composite disc that is optically scanned. The disc is constructed to avoid problems associated with internal optical reflections. The disc consists of a top layer of light sensitive material (12) bonded to a glass disc (11) with a reflective surface coating (S2). When the light source is focussed on the disc some light is transmitted throught the reflecting backing layer (S2) to maintain a suitable internal level. The light beam is modulated by the data and is focussed onto the track with a lens system.
FR7810130A 1977-04-05 1978-04-05 Optical scanning video disc recording system - has composite disc with glass disc which provides some internally reflected light and some transmitted light (NL 9.10.78) Withdrawn FR2386883A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52038738A JPS6034171B2 (en) 1977-04-05 1977-04-05 Video disk master using optical recording method

Publications (1)

Publication Number Publication Date
FR2386883A1 true FR2386883A1 (en) 1978-11-03

Family

ID=12533652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7810130A Withdrawn FR2386883A1 (en) 1977-04-05 1978-04-05 Optical scanning video disc recording system - has composite disc with glass disc which provides some internally reflected light and some transmitted light (NL 9.10.78)

Country Status (6)

Country Link
JP (1) JPS6034171B2 (en)
AT (1) AT365810B (en)
AU (1) AU519663B2 (en)
DE (1) DE2814723A1 (en)
FR (1) FR2386883A1 (en)
NL (1) NL7803576A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123223A2 (en) * 1983-04-12 1984-10-31 Fuji Photo Film Co., Ltd. Laser recording medium

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3376238D1 (en) * 1982-05-25 1988-05-11 Unisys Corp Archival record films for digital data storage using low power write-laser
DE3377432D1 (en) * 1982-05-25 1988-08-25 Unisys Corp Method for detecting fire
EP0096504B1 (en) * 1982-05-25 1987-12-16 Unisys Corporation Aurous archival record films for digital data storage
JPH03168943A (en) * 1989-11-29 1991-07-22 Hitachi Ltd Optical memory and information processor
WO2003046904A1 (en) * 2001-11-30 2003-06-05 Tdk Corporation Information medium master manufacturing method, information medium stamper manufacturing method, information medium master manufacturing apparatus, and information medium stamper manufacturing apparatus
TWI258142B (en) * 2002-01-08 2006-07-11 Tdk Corp Manufacturing method of stamper for manufacturing data medium, the stamper, and the stamper spacer with template

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497272A (en) * 1922-02-11 1924-06-10 Hatt Joseph Arthur Henry Photographic plate
US1929254A (en) * 1929-11-16 1933-10-03 Gen Electric Nonhalation film
US1962310A (en) * 1930-01-10 1934-06-12 Eastman Kodak Co Method of making sound records
FR2199604A1 (en) * 1972-09-02 1974-04-12 Philips Nv

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497272A (en) * 1922-02-11 1924-06-10 Hatt Joseph Arthur Henry Photographic plate
US1929254A (en) * 1929-11-16 1933-10-03 Gen Electric Nonhalation film
US1962310A (en) * 1930-01-10 1934-06-12 Eastman Kodak Co Method of making sound records
FR2199604A1 (en) * 1972-09-02 1974-04-12 Philips Nv

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123223A2 (en) * 1983-04-12 1984-10-31 Fuji Photo Film Co., Ltd. Laser recording medium
EP0123223A3 (en) * 1983-04-12 1984-12-05 Fuji Photo Film Co., Ltd. Laser recording medium

Also Published As

Publication number Publication date
NL7803576A (en) 1978-10-09
ATA231878A (en) 1981-06-15
JPS6034171B2 (en) 1985-08-07
AU519663B2 (en) 1981-12-17
AT365810B (en) 1982-02-25
AU3472378A (en) 1979-10-11
DE2814723A1 (en) 1978-10-12
JPS53123905A (en) 1978-10-28

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Legal Events

Date Code Title Description
ST Notification of lapse