DE69026894T2 - Gerät zur Wiedergabe von Information von einem magnetooptischen Speichermedium - Google Patents

Gerät zur Wiedergabe von Information von einem magnetooptischen Speichermedium

Info

Publication number
DE69026894T2
DE69026894T2 DE1990626894 DE69026894T DE69026894T2 DE 69026894 T2 DE69026894 T2 DE 69026894T2 DE 1990626894 DE1990626894 DE 1990626894 DE 69026894 T DE69026894 T DE 69026894T DE 69026894 T2 DE69026894 T2 DE 69026894T2
Authority
DE
Germany
Prior art keywords
magneto
storage medium
optical storage
reproducing information
reproducing
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
DE1990626894
Other languages
English (en)
Other versions
DE69026894D1 (de
Inventor
Hiroshi Fuji
Toshihisa Deguchi
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Publication of DE69026894D1 publication Critical patent/DE69026894D1/de
Application granted granted Critical
Publication of DE69026894T2 publication Critical patent/DE69026894T2/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
    • G11B11/10—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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10515—Reproducing
    • 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
DE1990626894 1989-09-26 1990-09-25 Gerät zur Wiedergabe von Information von einem magnetooptischen Speichermedium Expired - Fee Related DE69026894T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1250290A JP2886200B2 (ja) 1989-09-26 1989-09-26 光磁気記録再生装置

Publications (2)

Publication Number Publication Date
DE69026894D1 DE69026894D1 (de) 1996-06-13
DE69026894T2 true DE69026894T2 (de) 1996-11-14

Family

ID=17205708

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1990626894 Expired - Fee Related DE69026894T2 (de) 1989-09-26 1990-09-25 Gerät zur Wiedergabe von Information von einem magnetooptischen Speichermedium

Country Status (4)

Country Link
EP (1) EP0420591B1 (de)
JP (1) JP2886200B2 (de)
CA (1) CA2026202C (de)
DE (1) DE69026894T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69318517T2 (de) * 1992-11-20 1998-11-26 Philips Electronics Nv Vorrichtung zum magnetooptischen Lesen/Schreiben
JPH07130092A (ja) * 1993-11-05 1995-05-19 Sony Corp ディスク記録装置、ディスク再生装置およびディスク状記録媒体
KR100524949B1 (ko) * 2003-02-27 2005-11-01 삼성전자주식회사 광디스크의 배속에 따라 증폭이득을 제어하는 광신호변환장치 및 그의 증폭이득 제어방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691308A (en) * 1984-04-19 1987-09-01 Nippon Kogaku K. K. Apparatus for reproducing information from magnetooptical recording medium
JP2516926B2 (ja) * 1986-07-18 1996-07-24 シャープ株式会社 磁気光学ヘツド
US4847824A (en) * 1987-12-21 1989-07-11 International Business Machines Corporation Readback circuits for magnetooptic players
US4910479A (en) * 1988-01-22 1990-03-20 Sharp Kabushiki Kaisha Automatic gain control device for use in an optical memory device

Also Published As

Publication number Publication date
CA2026202C (en) 1996-08-27
EP0420591A3 (en) 1992-04-15
EP0420591B1 (de) 1996-05-08
DE69026894D1 (de) 1996-06-13
EP0420591A2 (de) 1991-04-03
JPH03113855A (ja) 1991-05-15
JP2886200B2 (ja) 1999-04-26
CA2026202A1 (en) 1991-03-27

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Legal Events

Date Code Title Description
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee