DE3804733A1 - Magneto-optische speichereinrichtung - Google Patents

Magneto-optische speichereinrichtung

Info

Publication number
DE3804733A1
DE3804733A1 DE3804733A DE3804733A DE3804733A1 DE 3804733 A1 DE3804733 A1 DE 3804733A1 DE 3804733 A DE3804733 A DE 3804733A DE 3804733 A DE3804733 A DE 3804733A DE 3804733 A1 DE3804733 A1 DE 3804733A1
Authority
DE
Germany
Prior art keywords
magneto
magnetic field
optical
head
storage device
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.)
Granted
Application number
DE3804733A
Other languages
German (de)
English (en)
Other versions
DE3804733C2 (enrdf_load_stackoverflow
Inventor
Takeshi Nakao
Masahiro Ojima
Yoshinori Miyamura
Toyoji Okuwaki
Youichi Kawakubo
Yoshinori Takeuchi
Yuzo Yamaguchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3804733A1 publication Critical patent/DE3804733A1/de
Application granted granted Critical
Publication of DE3804733C2 publication Critical patent/DE3804733C2/de
Granted 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
    • G11B11/10502—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
    • G11B11/10504—Recording
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
    • 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
    • G11B11/10517—Overwriting or erasing
    • 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
    • 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
    • G11B11/1058—Flying heads
DE3804733A 1987-03-06 1988-02-15 Magneto-optische speichereinrichtung Granted DE3804733A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62050040A JP2575687B2 (ja) 1987-03-06 1987-03-06 光磁気記憶装置

Publications (2)

Publication Number Publication Date
DE3804733A1 true DE3804733A1 (de) 1988-09-15
DE3804733C2 DE3804733C2 (enrdf_load_stackoverflow) 1992-08-06

Family

ID=12847886

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3804733A Granted DE3804733A1 (de) 1987-03-06 1988-02-15 Magneto-optische speichereinrichtung

Country Status (3)

Country Link
JP (1) JP2575687B2 (enrdf_load_stackoverflow)
KR (1) KR910002755B1 (enrdf_load_stackoverflow)
DE (1) DE3804733A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9001725A (nl) * 1989-08-01 1991-03-01 Mitsubishi Electric Corp Werkwijze en inrichting voor het registreren van informatie op een magneto-optisch informatieregistratiemedium.
EP0390221A3 (en) * 1989-03-31 1992-03-18 Hitachi, Ltd. Magneto-optical recording apparatus
EP0422923A3 (en) * 1989-10-11 1992-09-23 Sharp Kabushiki Kaisha Magnetic head for magneto-optical recording and magneto-optical recording head

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69031395T2 (de) 1989-02-23 1998-01-15 Fuji Photo Film Co Ltd Harzzusammensetzung und Verpackungsmaterial für lichtempfindliches Material
JPH02226563A (ja) * 1989-02-27 1990-09-10 Hitachi Ltd 高浮上磁気ヘッド
US5321672A (en) * 1989-04-19 1994-06-14 Hitachi, Ltd. Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains
JP2746306B2 (ja) * 1989-05-26 1998-05-06 キヤノン株式会社 光磁気記録再生装置
JPH0340250A (ja) * 1989-07-06 1991-02-21 Matsushita Electric Ind Co Ltd 光磁気ディスクおよび光磁気ディスク装置
JP2730223B2 (ja) * 1989-11-15 1998-03-25 松下電器産業株式会社 光磁気ディスク
JP2730224B2 (ja) * 1989-11-15 1998-03-25 松下電器産業株式会社 光磁気ディスク
JPH0775042B2 (ja) * 1990-06-13 1995-08-09 シャープ株式会社 光磁気記録再生装置
EP0592219B1 (en) * 1992-10-09 2001-07-25 Canon Kabushiki Kaisha Magnetic head for magneto-optical recording, and magneto-optical recording apparatus
JPH07176103A (ja) * 1993-12-20 1995-07-14 Canon Inc 光磁気記録再生システムならびにこれに用いる磁気ヘッド及び光磁気記録媒体
JP2827869B2 (ja) * 1993-12-28 1998-11-25 日本電気株式会社 光磁気記録媒体の再生方法
JP2658866B2 (ja) * 1994-03-04 1997-09-30 株式会社日立製作所 光磁気記憶方法
US6404705B1 (en) 1997-03-14 2002-06-11 Hitachi Maxell, Ltd. Magneto-optical disk apparatus having an adjustment mechanism for setting the position of magnetic heads
KR100708097B1 (ko) * 2000-07-24 2007-04-16 삼성전자주식회사 스윙암 구동방식의 광기록재생장치 및 이광기록재생장치에 적용되는 광디스크

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153676A1 (en) * 1984-02-15 1985-09-04 Hitachi, Ltd. Magneto-optical recording system
JPH0648806B2 (ja) * 1985-10-09 1994-06-22 松下電器産業株式会社 信号多重装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153676A1 (en) * 1984-02-15 1985-09-04 Hitachi, Ltd. Magneto-optical recording system
JPH0648806B2 (ja) * 1985-10-09 1994-06-22 松下電器産業株式会社 信号多重装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP 60-261052 A. In: Pat. Abstr. of J., Sect. P, Vol. 10, Nr 143 (P-459) *
JP 61-39251 A. In: Pat. Abstr. of J., Sect. P, Vol. 10, Nr. 195 (P-475) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390221A3 (en) * 1989-03-31 1992-03-18 Hitachi, Ltd. Magneto-optical recording apparatus
NL9001725A (nl) * 1989-08-01 1991-03-01 Mitsubishi Electric Corp Werkwijze en inrichting voor het registreren van informatie op een magneto-optisch informatieregistratiemedium.
EP0422923A3 (en) * 1989-10-11 1992-09-23 Sharp Kabushiki Kaisha Magnetic head for magneto-optical recording and magneto-optical recording head

Also Published As

Publication number Publication date
KR880011753A (ko) 1988-10-31
DE3804733C2 (enrdf_load_stackoverflow) 1992-08-06
JPS63217548A (ja) 1988-09-09
KR910002755B1 (ko) 1991-05-04
JP2575687B2 (ja) 1997-01-29

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee