CA1078060A - Multi-layered optical data records and playback apparatus - Google Patents

Multi-layered optical data records and playback apparatus

Info

Publication number
CA1078060A
CA1078060A CA232,631A CA232631A CA1078060A CA 1078060 A CA1078060 A CA 1078060A CA 232631 A CA232631 A CA 232631A CA 1078060 A CA1078060 A CA 1078060A
Authority
CA
Canada
Prior art keywords
data
record
light
layers
accordance
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
CA232,631A
Other languages
English (en)
French (fr)
Inventor
James T. Russell
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
Application granted granted Critical
Publication of CA1078060A publication Critical patent/CA1078060A/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)
CA232,631A 1974-10-21 1975-07-31 Multi-layered optical data records and playback apparatus Expired CA1078060A (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
CA1078060A true CA1078060A (en) 1980-05-20

Family

ID=24055665

Family Applications (2)

Application Number Title Priority Date Filing Date
CA232,631A Expired CA1078060A (en) 1974-10-21 1975-07-31 Multi-layered optical data records and playback apparatus
CA342,948A Expired CA1091804A (en) 1974-10-21 1980-01-03 Multi-layered optical data records and playback apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA342,948A Expired CA1091804A (en) 1974-10-21 1980-01-03 Multi-layered optical data records and playback apparatus

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (11)

* 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 (nl) * 1978-03-22 1979-09-25 Philips Nv Meerlaags informatieschijf.
FR2488711B1 (fr) * 1980-08-13 1985-06-28 Thomson Csf Procede thermo-optique d'inscription d'information et support d'information destine a la mise en oeuvre de ce procede
JPS59210544A (ja) * 1983-05-16 1984-11-29 Nec Corp 光記録媒体
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
EP0434230B1 (en) * 1989-11-22 1996-05-22 Sharp Kabushiki Kaisha Optical recording medium and method of recording and reproducing information thereon
US5644555A (en) * 1995-01-19 1997-07-01 International Business Machines Corporation Multiple data surface magneto-optical data storage system
JPH09161320A (ja) * 1995-12-08 1997-06-20 Nippon Columbia Co Ltd 貼り合わせ型光情報記録媒体
FR2765716B1 (fr) * 1997-07-02 1999-07-30 Commissariat Energie Atomique Support d'enregistrement optique a deux niveaux superposes, dispositif d'enregistrement et procede de lecture correspondants
GB2428130A (en) * 2005-07-06 2007-01-17 Univ Basel Photographic storage of digital information

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229603B2 (ja) * 1971-08-10 1977-08-03
JPS5828652B2 (ja) * 1972-12-25 1983-06-17 萬世工業株式会社 ヨミトリソウチ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE2546941A1 (de) 1976-04-29
JPS5231610A (en) 1977-03-10
GB1516413A (en) 1978-07-05
NL7510462A (nl) 1976-04-23
JPS6118392B2 (ja) 1986-05-12
JPS59223949A (ja) 1984-12-15
CA1091804A (en) 1980-12-16

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Legal Events

Date Code Title Description
MKEX Expiry