GB8320087D0 - Optical data retrieval system - Google Patents

Optical data retrieval system

Info

Publication number
GB8320087D0
GB8320087D0 GB838320087A GB8320087A GB8320087D0 GB 8320087 D0 GB8320087 D0 GB 8320087D0 GB 838320087 A GB838320087 A GB 838320087A GB 8320087 A GB8320087 A GB 8320087A GB 8320087 D0 GB8320087 D0 GB 8320087D0
Authority
GB
United Kingdom
Prior art keywords
optical data
retrieval system
data retrieval
optical
retrieval
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
GB838320087A
Other versions
GB2126406B (en
GB2126406A (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.)
Drexler Technology Corp
Original Assignee
Drexler Technology 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 Drexler Technology Corp filed Critical Drexler Technology Corp
Publication of GB8320087D0 publication Critical patent/GB8320087D0/en
Publication of GB2126406A publication Critical patent/GB2126406A/en
Application granted granted Critical
Publication of GB2126406B publication Critical patent/GB2126406B/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
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Lasers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
GB08320087A 1982-08-09 1983-07-26 Optical data retrieval system for multi-characteristic reflective data storage media Expired GB2126406B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40671982A 1982-08-09 1982-08-09

Publications (3)

Publication Number Publication Date
GB8320087D0 true GB8320087D0 (en) 1983-08-24
GB2126406A GB2126406A (en) 1984-03-21
GB2126406B GB2126406B (en) 1986-12-17

Family

ID=23609170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08320087A Expired GB2126406B (en) 1982-08-09 1983-07-26 Optical data retrieval system for multi-characteristic reflective data storage media

Country Status (5)

Country Link
JP (1) JPS5952436A (en)
CA (1) CA1200609A (en)
DE (1) DE3328368A1 (en)
GB (1) GB2126406B (en)
SE (1) SE8304295L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570252A (en) * 1982-08-09 1986-02-11 Drexler Technology Corporation Optical data retrieval system using multi-spectral light sources
EP0198894B1 (en) * 1984-10-29 1989-01-04 Ncr Corporation Optical data reader
JP2552109B2 (en) * 1985-11-08 1996-11-06 セイコーエプソン株式会社 Optical recording / reproducing device
DE3776183D1 (en) * 1986-04-09 1992-03-05 Canon Kk OPTICAL INFORMATION MEDIUM AND DEVICE FOR REPRESENTING INFORMATION FROM, AND / OR RECORDING INFORMATION ON SUCH A MEDIUM.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145758A (en) * 1977-10-25 1979-03-20 Drexler Technology Corporation Error checking method and apparatus for digital data in optical recording systems

Also Published As

Publication number Publication date
SE8304295D0 (en) 1983-08-05
GB2126406B (en) 1986-12-17
DE3328368A1 (en) 1984-02-09
GB2126406A (en) 1984-03-21
CA1200609A (en) 1986-02-11
JPS5952436A (en) 1984-03-27
SE8304295L (en) 1984-02-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee