GB1516413A - Multi-layered optical data records and playback apparatus - Google Patents

Multi-layered optical data records and playback apparatus

Info

Publication number
GB1516413A
GB1516413A GB32589/75A GB3258975A GB1516413A GB 1516413 A GB1516413 A GB 1516413A GB 32589/75 A GB32589/75 A GB 32589/75A GB 3258975 A GB3258975 A GB 3258975A GB 1516413 A GB1516413 A GB 1516413A
Authority
GB
United Kingdom
Prior art keywords
playback
optical data
layered optical
data records
playback apparatus
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.)
Expired
Application number
GB32589/75A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1516413A publication Critical patent/GB1516413A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating 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
    • G11B7/002—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
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

1516413 Multi-layered optical recording and playback E S JACOBS 4 Aug 1975 [21 Oct 1974] 32589/75 Heading G5R Information is recorded as discrete optical data spots of variable size in a plurality of layers 50 of a record 10. The recording may be reflective as shown, transmissive or photoluminescent, and playback is effected by a single beam 18. One layer 50 is selected for playback by means of a focussing lens 20 and a pin-hole mask 22 as shown or by colour filters (60, 62), Fig. 3 (not shown). The beam 18 scans successive arcuate tracks (35), Fig. 2 (not shown), via a five-sided distributor mirror 26 and five corresponding objective mirrors 34 and lenses 16, all rotating together on a shaft 30.
GB32589/75A 1974-10-21 1975-08-04 Multi-layered optical data records and playback apparatus Expired GB1516413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51645374A 1974-10-21 1974-10-21

Publications (1)

Publication Number Publication Date
GB1516413A true GB1516413A (en) 1978-07-05

Family

ID=24055665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32589/75A Expired GB1516413A (en) 1974-10-21 1975-08-04 Multi-layered optical data records and playback apparatus

Country Status (5)

Country Link
JP (2) JPS5231610A (en)
CA (2) CA1078060A (en)
DE (1) DE2546941A1 (en)
GB (1) GB1516413A (en)
NL (1) NL7510462A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046104A1 (en) * 1980-08-13 1982-02-17 Thomson-Csf Thermo-optical process for information recording, record carrier for carrying out this process and apparatus to read this record carrier
US5644555A (en) * 1995-01-19 1997-07-01 International Business Machines Corporation Multiple data surface magneto-optical data storage system
US5674583A (en) * 1989-11-22 1997-10-07 Sharp Kabushiki Kaisha Optical recording medium and manufacturing method thereof
GB2428130A (en) * 2005-07-06 2007-01-17 Univ Basel Photographic storage of digital information

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074085A (en) * 1976-03-31 1978-02-14 Eli S. Jacobs Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks
NL7803069A (en) * 1978-03-22 1979-09-25 Philips Nv MULTI-LAYER INFORMATION DISK.
JPS59210544A (en) * 1983-05-16 1984-11-29 Nec Corp Optical recording medium
US4639745A (en) * 1984-01-11 1987-01-27 Pioneer Electronic Corporation Optical recording medium
US4745484A (en) * 1986-07-30 1988-05-17 Drexler Technology Corporation Method and apparatus for stepped imaging in reading data
US5373499A (en) * 1993-07-22 1994-12-13 International Business Machines Corporation Multilayer optical disk and system having multiple optical paths include identical total disk substrate thickness
JPH09161320A (en) * 1995-12-08 1997-06-20 Nippon Columbia Co Ltd Stuck type optical information recording medium
FR2765716B1 (en) 1997-07-02 1999-07-30 Commissariat Energie Atomique OPTICAL TWO-LEVEL OPTICAL RECORDING MEDIUM, CORRESPONDING RECORDING DEVICE AND READING METHOD

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229603B2 (en) * 1971-08-10 1977-08-03
JPS5828652B2 (en) * 1972-12-25 1983-06-17 萬世工業株式会社 Yomitori Sochi

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046104A1 (en) * 1980-08-13 1982-02-17 Thomson-Csf Thermo-optical process for information recording, record carrier for carrying out this process and apparatus to read this record carrier
US5674583A (en) * 1989-11-22 1997-10-07 Sharp Kabushiki Kaisha Optical recording medium and manufacturing method thereof
US5989671A (en) * 1989-11-22 1999-11-23 Sharp Kabushiki Kaisha Optical recording medium and manufacturing method thereof
US5644555A (en) * 1995-01-19 1997-07-01 International Business Machines Corporation Multiple data surface magneto-optical data storage system
GB2428130A (en) * 2005-07-06 2007-01-17 Univ Basel Photographic storage of digital information

Also Published As

Publication number Publication date
CA1091804A (en) 1980-12-16
JPS59223949A (en) 1984-12-15
NL7510462A (en) 1976-04-23
DE2546941A1 (en) 1976-04-29
JPS5231610A (en) 1977-03-10
JPS6118392B2 (en) 1986-05-12
CA1078060A (en) 1980-05-20

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee