DE69233392D1 - Magnetooptische Abtasteinrichtung - Google Patents

Magnetooptische Abtasteinrichtung

Info

Publication number
DE69233392D1
DE69233392D1 DE69233392T DE69233392T DE69233392D1 DE 69233392 D1 DE69233392 D1 DE 69233392D1 DE 69233392 T DE69233392 T DE 69233392T DE 69233392 T DE69233392 T DE 69233392T DE 69233392 D1 DE69233392 D1 DE 69233392D1
Authority
DE
Germany
Prior art keywords
coil
magneto
record carrier
optical scanner
focused
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
DE69233392T
Other languages
English (en)
Other versions
DE69233392T2 (de
Inventor
Bernardus Antonius Joha Jacobs
Grinsven Petrus Augustinus Van
Wilfred Andre Maria Snijders
Johannes Hendrikus Mari Spruit
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Application granted granted Critical
Publication of DE69233392D1 publication Critical patent/DE69233392D1/de
Publication of DE69233392T2 publication Critical patent/DE69233392T2/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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
    • 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
    • G11B11/10532—Heads

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Holo Graphy (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Facsimile Heads (AREA)
DE69233392T 1991-12-30 1992-12-17 Magnetooptische Abtasteinrichtung Expired - Fee Related DE69233392T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP91203428 1991-12-30
EP91203428 1991-12-30

Publications (2)

Publication Number Publication Date
DE69233392D1 true DE69233392D1 (de) 2004-09-09
DE69233392T2 DE69233392T2 (de) 2005-07-21

Family

ID=8208116

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69233392T Expired - Fee Related DE69233392T2 (de) 1991-12-30 1992-12-17 Magnetooptische Abtasteinrichtung

Country Status (6)

Country Link
US (1) US5307328A (de)
JP (1) JP3604160B2 (de)
AT (1) ATE272887T1 (de)
DE (1) DE69233392T2 (de)
SG (1) SG44903A1 (de)
TW (1) TW226462B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392263A (en) * 1990-01-31 1995-02-21 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
US6226233B1 (en) 1996-07-30 2001-05-01 Seagate Technology, Inc. Magneto-optical system utilizing MSR media
US5903525A (en) * 1997-04-18 1999-05-11 Read-Rite Corporation Coil for use with magneto-optical head
US5886959A (en) * 1997-04-18 1999-03-23 Read-Rite Corporation Thin-film electro-magnetic coil design for use in a flying magneto-optical head
US5978319A (en) * 1997-11-06 1999-11-02 Read-Rite Corporation Thin electro-magnetic coil assembly for attachment to a slider
WO1999059148A2 (en) * 1998-05-13 1999-11-18 Koninklijke Philips Electronics N.V. Device for optically scanning a record carrier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781905A (en) * 1972-09-22 1973-12-25 Honeywell Inc Optical mass memory
JPH0633525Y2 (ja) * 1987-04-10 1994-08-31 富士通株式会社 光磁気デイスク装置の磁界印加機構
US5014254A (en) * 1988-05-09 1991-05-07 U.S. Philips Corporation Magneto-optical recording method and magneto-optical recording apparatus
JPH03181045A (ja) * 1989-12-08 1991-08-07 Fujitsu Ltd 光ディスク装置
US5124961A (en) * 1989-12-28 1992-06-23 Fuji Xerox Co., Ltd. Floating head for use with a recording apparatus of magneto-optical memory device

Also Published As

Publication number Publication date
JP3604160B2 (ja) 2004-12-22
DE69233392T2 (de) 2005-07-21
JPH05250753A (ja) 1993-09-28
SG44903A1 (en) 1997-12-19
US5307328A (en) 1994-04-26
ATE272887T1 (de) 2004-08-15
TW226462B (de) 1994-07-11

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee