JPS6455766A - Magneto-optical recording, reproducing and erasing device - Google Patents

Magneto-optical recording, reproducing and erasing device

Info

Publication number
JPS6455766A
JPS6455766A JP21339487A JP21339487A JPS6455766A JP S6455766 A JPS6455766 A JP S6455766A JP 21339487 A JP21339487 A JP 21339487A JP 21339487 A JP21339487 A JP 21339487A JP S6455766 A JPS6455766 A JP S6455766A
Authority
JP
Japan
Prior art keywords
medium
generating part
magnetic field
reproducing
laser beam
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.)
Pending
Application number
JP21339487A
Other languages
Japanese (ja)
Inventor
Mitsuya Okada
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP21339487A priority Critical patent/JPS6455766A/en
Publication of JPS6455766A publication Critical patent/JPS6455766A/en
Pending 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

Abstract

PURPOSE:To execute the high speed switching of a magnetic field, by sandwiching a medium, arranging oppositely an impressed magnetic field generating part and a laser beam converging lens for recording, reproducing and erasing, keeping the distance of the impressed magnetic field generating part and the medium in a prescribed interval and moving the position of the generating part to a desired position. CONSTITUTION:By sandwiching a recording medium 1, an impressed magnetic field generating part 3 and a laser beam converging lens 21 for recording, reproducing and erasing is oppositely arranged. A driving means 4 keeps the distance of the medium 1 and the generating part 3 in a prescribed interval, and aligns the track direction of the medium 1 in a radius direction so that a desired impressed magnetic field can be supplied to a laser beam converging position. Namely, by comparing 44 signals from a detecting part 42 to detect the distance fluctuation of the medium 1 and the generating part 3 and a detecting part 43 to detect the radius position of the generating part 3 with the reflecting light from the medium 1, a driving part 41 moves finly the generating part 3 in the radius direction and the dislocation is corrected.
JP21339487A 1987-08-26 1987-08-26 Magneto-optical recording, reproducing and erasing device Pending JPS6455766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21339487A JPS6455766A (en) 1987-08-26 1987-08-26 Magneto-optical recording, reproducing and erasing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21339487A JPS6455766A (en) 1987-08-26 1987-08-26 Magneto-optical recording, reproducing and erasing device

Publications (1)

Publication Number Publication Date
JPS6455766A true JPS6455766A (en) 1989-03-02

Family

ID=16638477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21339487A Pending JPS6455766A (en) 1987-08-26 1987-08-26 Magneto-optical recording, reproducing and erasing device

Country Status (1)

Country Link
JP (1) JPS6455766A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390260A1 (en) * 1989-03-28 1990-10-03 Koninklijke Philips Electronics N.V. Device for inscribing and/or reading a magneto-optical information carrier
JPH02312033A (en) * 1989-05-26 1990-12-27 Canon Inc Magneto-optical recording and reproducing device
JPH0322234A (en) * 1989-06-19 1991-01-30 Canon Inc Information recorder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209944A (en) * 1984-04-02 1985-10-22 Nec Corp Device for optomagnetic recording, reproducing and erasing
JPS62185269A (en) * 1986-02-12 1987-08-13 Sony Corp Photomagnetic recorder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209944A (en) * 1984-04-02 1985-10-22 Nec Corp Device for optomagnetic recording, reproducing and erasing
JPS62185269A (en) * 1986-02-12 1987-08-13 Sony Corp Photomagnetic recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390260A1 (en) * 1989-03-28 1990-10-03 Koninklijke Philips Electronics N.V. Device for inscribing and/or reading a magneto-optical information carrier
JPH02312033A (en) * 1989-05-26 1990-12-27 Canon Inc Magneto-optical recording and reproducing device
JPH0322234A (en) * 1989-06-19 1991-01-30 Canon Inc Information recorder

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