CA2200565A1 - Disque optique multicouche et appareil le contenant - Google Patents

Disque optique multicouche et appareil le contenant

Info

Publication number
CA2200565A1
CA2200565A1 CA002200565A CA2200565A CA2200565A1 CA 2200565 A1 CA2200565 A1 CA 2200565A1 CA 002200565 A CA002200565 A CA 002200565A CA 2200565 A CA2200565 A CA 2200565A CA 2200565 A1 CA2200565 A1 CA 2200565A1
Authority
CA
Canada
Prior art keywords
tracks
data
optical
carrier
information
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
CA002200565A
Other languages
English (en)
Inventor
John H. D. Wiltshire
Gregory Smith
Stephen W. Dewar
Riccardo Regazzo
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
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
Priority claimed from GB9418914A external-priority patent/GB9418914D0/en
Priority claimed from GB9424229A external-priority patent/GB9424229D0/en
Application filed by Individual filed Critical Individual
Publication of CA2200565A1 publication Critical patent/CA2200565A1/fr
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)

Abstract

Un support de données optiques présente une paire de pistes hélicoïdales orientées dans des sens opposés qui peuvent être lues séquentiellement ou simultanément. Lorsqu'elles doivent être lues simultanément, les informations y sont enregistrées selon une densité spatiale uniforme et démodulées en un flux de données commun. Les têtes de lecture des pistes sont équidistantes par rapport à un rayon médian et se déplacent sur le support à une vitesse radiale constante afin de présenter une vitesse de lecture de données combinée pratiquement constante.
CA002200565A 1994-09-20 1995-09-20 Disque optique multicouche et appareil le contenant Abandoned CA2200565A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9418914.9 1994-09-20
GB9418914A GB9418914D0 (en) 1994-09-20 1994-09-20 Multiple layer optical disc and apparatus
GB9424229.4 1994-11-30
GB9424229A GB9424229D0 (en) 1994-11-30 1994-11-30 Multiple layer optical disc and apparatus

Publications (1)

Publication Number Publication Date
CA2200565A1 true CA2200565A1 (fr) 1996-03-28

Family

ID=26305653

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002200565A Abandoned CA2200565A1 (fr) 1994-09-20 1995-09-20 Disque optique multicouche et appareil le contenant

Country Status (4)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856186B1 (fr) * 1995-10-19 2000-06-28 Matsushita Electric Industrial Co., Ltd. Support d'enregistrement d'informations, procede de reproduction d'informations et appareil de reproduction d'informations
TW540038B (en) * 1998-10-13 2003-07-01 Matsushita Electric Industrial Co Ltd Recording/reproducing apparatus for optical information recording medium and optical head
KR100491782B1 (ko) * 1999-09-02 2005-05-30 마쯔시다덴기산교 가부시키가이샤 광 디스크 장치
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 (nl) * 1981-01-12 1982-08-02 Philips Nv Registratiedrager met optisch uitleesbare informatiestruktuur.
JP2845874B2 (ja) * 1987-04-27 1999-01-13 株式会社日立製作所 光ディスク及び光ディスク再生装置
JPH01130375A (ja) * 1987-11-16 1989-05-23 Nec Corp 光学式情報記録再生装置
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 (ja) * 1992-05-14 1994-02-04 Matsushita Electric Ind Co Ltd 光ディスクおよび光情報記録再生装置

Also Published As

Publication number Publication date
EP0878003A1 (fr) 1998-11-18
WO1996009624A1 (fr) 1996-03-28
AU3468395A (en) 1996-04-09

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Legal Events

Date Code Title Description
FZDE Dead