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AU3468395A - Multiple-layer optical disc and apparatus - Google Patents

Multiple-layer optical disc and apparatus

Info

Publication number
AU3468395A
AU3468395A AU34683/95A AU3468395A AU3468395A AU 3468395 A AU3468395 A AU 3468395A AU 34683/95 A AU34683/95 A AU 34683/95A AU 3468395 A AU3468395 A AU 3468395A AU 3468395 A AU3468395 A AU 3468395A
Authority
AU
Australia
Prior art keywords
optical disc
layer optical
layer
disc
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.)
Abandoned
Application number
AU34683/95A
Inventor
Stephen W Dewar
Ricardo Regazzo
Gregory L Smith
John H. D Wiltshire
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.)
PARALIGHT LASER TECHNOLOGIES Inc
Original Assignee
PARALIGHT LASER TECHNOLOGIES I
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
Priority claimed from GB9418914A external-priority patent/GB9418914D0/en
Priority claimed from GB9424229A external-priority patent/GB9424229D0/en
Application filed by PARALIGHT LASER TECHNOLOGIES I filed Critical PARALIGHT LASER TECHNOLOGIES I
Publication of AU3468395A publication Critical patent/AU3468395A/en
Abandoned 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
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—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
    • G11B7/12—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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
AU34683/95A 1994-09-20 1995-09-20 Multiple-layer optical disc and apparatus Abandoned AU3468395A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9418914A GB9418914D0 (en) 1994-09-20 1994-09-20 Multiple layer optical disc and apparatus
GB9418914 1994-09-20
GB9424229 1994-11-30
GB9424229A GB9424229D0 (en) 1994-11-30 1994-11-30 Multiple layer optical disc and apparatus
PCT/CA1995/000530 WO1996009624A1 (en) 1994-09-20 1995-09-20 Multiple-layer optical disc and apparatus

Publications (1)

Publication Number Publication Date
AU3468395A true AU3468395A (en) 1996-04-09

Family

ID=26305653

Family Applications (1)

Application Number Title Priority Date Filing Date
AU34683/95A Abandoned AU3468395A (en) 1994-09-20 1995-09-20 Multiple-layer optical disc and apparatus

Country Status (4)

Country Link
EP (1) EP0878003A1 (en)
AU (1) AU3468395A (en)
CA (1) CA2200565A1 (en)
WO (1) WO1996009624A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1110037C (en) * 1995-10-19 2003-05-28 松下电器产业株式会社 Information recording medium, information reproducing method, and information reproducing device
TW540038B (en) * 1998-10-13 2003-07-01 Matsushita Electric Ind Co Ltd Recording/reproducing apparatus for optical information recording medium and optical head
KR100491782B1 (en) * 1999-09-02 2005-05-30 마쯔시다덴기산교 가부시키가이샤 Optical disk device
US8254235B2 (en) 2010-03-31 2012-08-28 General Electric Company System and method for transfer of data stored in holographic storage medium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999009A (en) * 1971-03-11 1976-12-21 U.S. Philips Corporation Apparatus for playing a transparent optically encoded multilayer information carrying disc
NL8100098A (en) * 1981-01-12 1982-08-02 Philips Nv RECORD CARRIER WITH OPTICALLY READABLE INFORMATION STRUCTURE.
JP2845874B2 (en) * 1987-04-27 1999-01-13 株式会社日立製作所 Optical disk and optical disk reproducing device
JPH01130375A (en) * 1987-11-16 1989-05-23 Nec Corp Optical information recording and reproducing device
GB8906353D0 (en) * 1989-03-20 1989-05-04 Dewar Productions Inc Semi-timing optic lathe
US5255262A (en) * 1991-06-04 1993-10-19 International Business Machines Corporation Multiple data surface optical data storage system with transmissive data surfaces
JPH0628778A (en) * 1992-05-14 1994-02-04 Matsushita Electric Ind Co Ltd Optical disk and device for recording and reproducing optical information

Also Published As

Publication number Publication date
CA2200565A1 (en) 1996-03-28
WO1996009624A1 (en) 1996-03-28
EP0878003A1 (en) 1998-11-18

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