RU94046347A - Устройство привода оптического диска - Google Patents

Устройство привода оптического диска

Info

Publication number
RU94046347A
RU94046347A RU94046347/28A RU94046347A RU94046347A RU 94046347 A RU94046347 A RU 94046347A RU 94046347/28 A RU94046347/28 A RU 94046347/28A RU 94046347 A RU94046347 A RU 94046347A RU 94046347 A RU94046347 A RU 94046347A
Authority
RU
Russia
Prior art keywords
optical disk
switching
output signal
data
design
Prior art date
Application number
RU94046347/28A
Other languages
English (en)
Other versions
RU2137219C1 (ru
Inventor
Алан Жакетт Глен
Us]
Тайефен Мороват
Original Assignee
Интернэшнл Бизнес Машинз Корпорейшн (US)
Интернэшнл Бизнес Машинз Корпорейшн
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 Интернэшнл Бизнес Машинз Корпорейшн (US), Интернэшнл Бизнес Машинз Корпорейшн filed Critical Интернэшнл Бизнес Машинз Корпорейшн (US)
Publication of RU94046347A publication Critical patent/RU94046347A/ru
Application granted granted Critical
Publication of RU2137219C1 publication Critical patent/RU2137219C1/ru

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/03—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by deforming with non-mechanical means, e.g. laser, beam of particles
    • 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
    • G11B7/13—Optical detectors therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

Схема для одновременного детектирования МО- и RОМ-сигналов, отраженных от оптического диска так, что оба сигнала имеются в наличии и пригодны к использованию без переключения от одного к другому. Схема уменьшает время переключения и переходные процессы переключения. Два фотоприемника расположены для восприятия Р и S компонентов поляризованного света для воздействия на дифференциальный усилитель и выработки выходного сигнала, представляющего записанные МО-данные. Второй усилитель подключен по крайней мере к одному из фотодетекторов для выработки выходного сигнала, представляющего записанные МОданные, а также представляющего дефекты в МО-части оптического диска.

Claims (1)

  1. Схема для одновременного детектирования МО- и RОМ-сигналов, отраженных от оптического диска так, что оба сигнала имеются в наличии и пригодны к использованию без переключения от одного к другому. Схема уменьшает время переключения и переходные процессы переключения. Два фотоприемника расположены для восприятия Р и S компонентов поляризованного света для воздействия на дифференциальный усилитель и выработки выходного сигнала, представляющего записанные МО-данные. Второй усилитель подключен по крайней мере к одному из фотодетекторов для выработки выходного сигнала, представляющего записанные МОданные, а также представляющего дефекты в МО-части оптического диска.
    Figure 00000001
RU94046347A 1992-06-15 1993-05-19 Аппаратура оптического дискового запоминающего устройства RU2137219C1 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/898,551 US5265085A (en) 1992-06-15 1992-06-15 Simultaneous MO and ROM optical disk signal detection
US898,551 1992-06-15
PCT/EP1993/001239 WO1993026003A1 (en) 1992-06-15 1993-05-19 Simultaneous mo and rom optical disk signal detection

Publications (2)

Publication Number Publication Date
RU94046347A true RU94046347A (ru) 1996-10-10
RU2137219C1 RU2137219C1 (ru) 1999-09-10

Family

ID=25409611

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94046347A RU2137219C1 (ru) 1992-06-15 1993-05-19 Аппаратура оптического дискового запоминающего устройства

Country Status (12)

Country Link
US (1) US5265085A (ru)
EP (1) EP0646272B1 (ru)
JP (1) JP2699992B2 (ru)
KR (1) KR940001078A (ru)
CZ (1) CZ302094A3 (ru)
DE (1) DE69304068T2 (ru)
HU (1) HUT72803A (ru)
PL (1) PL170774B1 (ru)
RU (1) RU2137219C1 (ru)
SG (1) SG70556A1 (ru)
SK (1) SK154494A3 (ru)
WO (1) WO1993026003A1 (ru)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL101570A0 (en) * 1992-04-10 1992-12-30 Amir Alon Method and apparatus for reading data
IL106009A0 (en) * 1993-06-14 1993-10-20 Amir Alon Method and apparatus for the simultaneous writing of data on an optical disk
IL107181A0 (en) * 1993-10-04 1994-01-25 Nogatech Ltd Optical disk reader
US5442618A (en) * 1993-11-12 1995-08-15 International Business Machines Corporation Common mode rejection control in an optical disk drive
KR100406477B1 (ko) * 1995-01-31 2004-03-24 소니 가부시끼 가이샤 광신호검출회로
US5537383A (en) * 1995-03-01 1996-07-16 Eastman Kodak Company Optical data storage system with differential data detection and source noise subtraction for use with magneto-optic, write-once and other optical media
US5586101A (en) * 1995-03-01 1996-12-17 Eastman Kodak Company Magneto-optic data storage system with differential detection channels having separate gain control circuit
US5757751A (en) 1996-01-16 1998-05-26 International Business Machines Corporation Baseline correction circuit for pulse width modulated data readback systems

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985881A (en) * 1983-12-23 1991-01-15 Hitachi, Ltd. Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter
US4858218A (en) * 1984-09-12 1989-08-15 Nikon Corporation Optical recording medium and reproducing apparatus
NL8500059A (nl) * 1985-01-11 1986-08-01 Philips Nv Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager.
US4833662A (en) * 1985-05-02 1989-05-23 Olympus Optical Co., Ltd. Reproduction apparatus for a magneto-optical recording medium
JPH06103535B2 (ja) * 1985-06-12 1994-12-14 オリンパス光学工業株式会社 光学式情報記録再生装置
US4926408A (en) * 1985-06-14 1990-05-15 Kabushiki Kaisha Toshiba Magneto-optic recording/erasing system with simultaneous dual head control and disk error detection
US4924447A (en) * 1986-02-07 1990-05-08 Sharp Kabushiki Kaisha Optical memory device for recording, reproducing or erasing information onto a recording medium, including a recorded region detecting circuit.
JP2559372B2 (ja) * 1986-07-09 1996-12-04 株式会社日立製作所 光ディスク装置及び光情報記録方法
DE3732874A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optische abtastvorrichtung
US4951274A (en) * 1987-01-23 1990-08-21 Nec Corporation Magneto-optical head capable of separating beams for reading recorded information and servo information by use of one optical element
US4951154A (en) * 1987-01-28 1990-08-21 Nec Corporation Magneto-optic recording/reproducing apparatus
JP2687350B2 (ja) * 1987-05-28 1997-12-08 ソニー株式会社 光磁気ディスク再生装置
US4785167A (en) * 1987-08-26 1988-11-15 International Business Machines Corporation Photodetector having cascaded photoelements
US4945527A (en) * 1987-09-30 1990-07-31 Fuji Photo Film Co., Ltd. Optical pickup apparatus for detection of focusing error, tracking error, and information
US5073880A (en) * 1987-12-18 1991-12-17 Hitachi, Ltd. Information recording/reproducing method and apparatus
US4847824A (en) * 1987-12-21 1989-07-11 International Business Machines Corporation Readback circuits for magnetooptic players
US4941139A (en) * 1988-09-02 1990-07-10 International Business Machines Corporation Checking media operations and recording during optical recording
JPH0482039A (ja) * 1990-07-24 1992-03-16 Nec Corp コピーガード機能を有する光ディスクこれを用いた光ディスク装置及び光ディスクシステム
JP3021029B2 (ja) * 1990-11-20 2000-03-15 シャープ株式会社 光磁気記録媒体の情報アクセス方法
CA2073310A1 (en) * 1991-07-08 1993-01-09 Koji Tsuzukiyama Method of detecting information from magnetooptical recording medium, method of detecting information from optical recording medium, and optical recording medium

Also Published As

Publication number Publication date
WO1993026003A1 (en) 1993-12-23
DE69304068T2 (de) 1997-02-06
KR940001078A (ko) 1994-01-10
JPH07192325A (ja) 1995-07-28
US5265085A (en) 1993-11-23
HU9403547D0 (en) 1995-02-28
HUT72803A (en) 1996-05-28
SG70556A1 (en) 2000-02-22
CZ302094A3 (en) 1995-03-15
RU2137219C1 (ru) 1999-09-10
EP0646272B1 (en) 1996-08-14
SK154494A3 (en) 1995-05-10
PL170774B1 (en) 1997-01-31
EP0646272A1 (en) 1995-04-05
JP2699992B2 (ja) 1998-01-19
DE69304068D1 (de) 1996-09-19

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