DE69304068D1 - Gleichzeitige mo und rom signaldetektion für eine optische platte - Google Patents

Gleichzeitige mo und rom signaldetektion für eine optische platte

Info

Publication number
DE69304068D1
DE69304068D1 DE69304068T DE69304068T DE69304068D1 DE 69304068 D1 DE69304068 D1 DE 69304068D1 DE 69304068 T DE69304068 T DE 69304068T DE 69304068 T DE69304068 T DE 69304068T DE 69304068 D1 DE69304068 D1 DE 69304068D1
Authority
DE
Germany
Prior art keywords
simultaneous
signal detection
optical plate
rom signal
rom
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 - Fee Related
Application number
DE69304068T
Other languages
English (en)
Other versions
DE69304068T2 (de
Inventor
Glen Jaquette
Morovat Tayefeh
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69304068D1 publication Critical patent/DE69304068D1/de
Publication of DE69304068T2 publication Critical patent/DE69304068T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
DE69304068T 1992-06-15 1993-05-19 Gleichzeitige mo und rom signaldetektion für eine optische platte Expired - Fee Related DE69304068T2 (de)

Applications Claiming Priority (2)

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
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
DE69304068D1 true DE69304068D1 (de) 1996-09-19
DE69304068T2 DE69304068T2 (de) 1997-02-06

Family

ID=25409611

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69304068T Expired - Fee Related DE69304068T2 (de) 1992-06-15 1993-05-19 Gleichzeitige mo und rom signaldetektion für eine optische platte

Country Status (12)

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

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
CN1088233C (zh) * 1995-01-31 2002-07-24 索尼公司 光信号检测电路
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
DE3770283D1 (de) * 1986-02-07 1991-07-04 Sharp Kk Optisches speichergeraet.
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
DE3852281T2 (de) * 1987-12-18 1995-07-20 Hitachi Ltd Verfahren und Gerät zur Datenaufnahme/Wiedergabe.
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
RU2137219C1 (ru) 1999-09-10
JP2699992B2 (ja) 1998-01-19
WO1993026003A1 (en) 1993-12-23
HU9403547D0 (en) 1995-02-28
JPH07192325A (ja) 1995-07-28
SG70556A1 (en) 2000-02-22
EP0646272A1 (de) 1995-04-05
DE69304068T2 (de) 1997-02-06
RU94046347A (ru) 1996-10-10
EP0646272B1 (de) 1996-08-14
CZ302094A3 (en) 1995-03-15
HUT72803A (en) 1996-05-28
PL170774B1 (en) 1997-01-31
KR940001078A (ko) 1994-01-10
SK154494A3 (en) 1995-05-10
US5265085A (en) 1993-11-23

Similar Documents

Publication Publication Date Title
DE69729194D1 (de) Optische platte und antriebsgerät dafür
DE69423728D1 (de) System mit optischer Platte und Gerät für optische Platte
DE69735817D1 (de) Optische platte und verfahren zur aufzeichnung auf der optischer platte
DE69738491D1 (de) Optische Signalverarbeitungsvorrichtung und optisches Signalverarbeitungsverfahren
DE69531647D1 (de) Optische Vorrichtung und diese verwendendes Verschiebungsinformationmessgerät
DE69617478D1 (de) Optische Platte und Gerät zur Wiedergabe optischer Platten
DE69421697D1 (de) Holographische laserabtastvorrichtung und abstandbestimmungsvorrichtung
DE69028217D1 (de) Elektromagnetisches Betätigungsgerät und optische Platte
DE69712219D1 (de) Optische platte
DE69638027D1 (de) Lesesystem für eine optische Platte
DE69319947D1 (de) Optische Karte und Gerät zum Lesen derselbem
DE69616845D1 (de) Optische Platte und optisches Plattenwiedergabegerät
DE69526697D1 (de) Optische Platte
DE69016054D1 (de) Optische Platte.
DE3768795D1 (de) Optische informationsaufzeichnungsplatte und geraet dafuer.
DE3889509D1 (de) Optische Abtastvorrichtung und optische Gitteranordnung dazu.
DE69015952D1 (de) Spiegeleinrichtung für den Bereich der UV- und Röntgenstrahlen.
DE69521858D1 (de) Optische Platte und Informationsverwaltungssystem dafür
DE69714107D1 (de) Optische Wellenleitersonde und optisches System
DE69322836D1 (de) Optische Platte
DE69625662D1 (de) Optische Platte und optisches Plattenwiedergabegerät
DE69703387D1 (de) Optische platte
DE69121656D1 (de) Optisches scheibensystem und optische scheibe
DE69928372D1 (de) Optische platte und abtastgerät dafür
DE69304068D1 (de) Gleichzeitige mo und rom signaldetektion für eine optische platte

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee