JPS5794949A - Magnetic recorder and reproducer - Google Patents

Magnetic recorder and reproducer

Info

Publication number
JPS5794949A
JPS5794949A JP17162480A JP17162480A JPS5794949A JP S5794949 A JPS5794949 A JP S5794949A JP 17162480 A JP17162480 A JP 17162480A JP 17162480 A JP17162480 A JP 17162480A JP S5794949 A JPS5794949 A JP S5794949A
Authority
JP
Japan
Prior art keywords
light
intensity difference
floating slider
recording medium
detect
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
JP17162480A
Other languages
Japanese (ja)
Inventor
Hiroki Murayama
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP17162480A priority Critical patent/JPS5794949A/en
Publication of JPS5794949A publication Critical patent/JPS5794949A/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
    • 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
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head

Abstract

PURPOSE:To reproduce magnetized information, recorded with high density, at an excellent S/N ratio by decreasing the length of a gap between a floating slider and a magnetic recording medium by providing a vertical magnetizing film to the floating slider. CONSTITUTION:A light beam 16 incident to a floating slider 7 is reflected by a vertical magnetizing film while the plane of polarization is rotated, and is made incident to the same analyzer 9 with a polarizer 3 through a lens 6 and a half-mirror 5. The analyzer 9 converts the rotating angle of the polarization plane of the laser beam into the intensity difference of the light, and a detector 10 reproduces the magnetized information of a magnetic recording medium 8 by the intensity difference of the light. This reproduced signal is supplied to an output 14 and a voice coil motor driving part 11. A movable reflecting mirror driving part 12 supplies an oscillation instruction to a piezoelectric oscillator 15 to detect the direction of a track shift, and also to detect a fine position shift by the intensity difference of the light, thereby rotating a movable reflecting mirror 4 so that a correct track is irradiated with the light beam 16.
JP17162480A 1980-12-05 1980-12-05 Magnetic recorder and reproducer Pending JPS5794949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17162480A JPS5794949A (en) 1980-12-05 1980-12-05 Magnetic recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17162480A JPS5794949A (en) 1980-12-05 1980-12-05 Magnetic recorder and reproducer

Publications (1)

Publication Number Publication Date
JPS5794949A true JPS5794949A (en) 1982-06-12

Family

ID=15926621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17162480A Pending JPS5794949A (en) 1980-12-05 1980-12-05 Magnetic recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS5794949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135931U (en) * 1989-04-14 1990-11-13
JPH02289982A (en) * 1988-04-06 1990-11-29 Mitsubishi Electric Corp Optical disk recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02289982A (en) * 1988-04-06 1990-11-29 Mitsubishi Electric Corp Optical disk recording and reproducing device
JPH02135931U (en) * 1989-04-14 1990-11-13

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