JPH0363139B2 - - Google Patents

Info

Publication number
JPH0363139B2
JPH0363139B2 JP57190337A JP19033782A JPH0363139B2 JP H0363139 B2 JPH0363139 B2 JP H0363139B2 JP 57190337 A JP57190337 A JP 57190337A JP 19033782 A JP19033782 A JP 19033782A JP H0363139 B2 JPH0363139 B2 JP H0363139B2
Authority
JP
Japan
Prior art keywords
light
magneto
analyzers
signal
optical head
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 - Lifetime
Application number
JP57190337A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5979446A (ja
Inventor
Toshihisa Deguchi
Yoshikazu Fujii
Tetsuya Inui
Hideyoshi Yamaoka
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
Priority to JP57190337A priority Critical patent/JPS5979446A/ja
Publication of JPS5979446A publication Critical patent/JPS5979446A/ja
Publication of JPH0363139B2 publication Critical patent/JPH0363139B2/ja
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
    • G11B11/10532—Heads

Landscapes

  • Optical Head (AREA)
JP57190337A 1982-10-28 1982-10-28 磁気光学ヘッド Granted JPS5979446A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57190337A JPS5979446A (ja) 1982-10-28 1982-10-28 磁気光学ヘッド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57190337A JPS5979446A (ja) 1982-10-28 1982-10-28 磁気光学ヘッド

Publications (2)

Publication Number Publication Date
JPS5979446A JPS5979446A (ja) 1984-05-08
JPH0363139B2 true JPH0363139B2 (enrdf_load_stackoverflow) 1991-09-30

Family

ID=16256510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57190337A Granted JPS5979446A (ja) 1982-10-28 1982-10-28 磁気光学ヘッド

Country Status (1)

Country Link
JP (1) JPS5979446A (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2610123B2 (ja) * 1985-10-02 1997-05-14 セイコー電子工業株式会社 光情報検出装置
JPH0711874B2 (ja) * 1986-06-02 1995-02-08 セイコーエプソン株式会社 光磁気信号検出装置
FR2597643A1 (fr) * 1985-11-08 1987-10-23 Seiko Epson Corp Systeme de lecture de signal magneto-optique
DE3732874A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optische abtastvorrichtung
US5161133A (en) * 1989-09-29 1992-11-03 International Business Machines Corporation Magneto-optical storage system
WO1993016469A1 (en) * 1992-02-07 1993-08-19 Sony Corporation Phase varying device, and optical pickup apparatus using the same for magneto-optical storage
WO1995014299A1 (fr) * 1993-11-19 1995-05-26 Sony Corporation Appareil de lecture optique
KR970700356A (ko) * 1994-11-10 1997-01-08 이데이 노부유키 광 픽업 장치 및 광학 디스크 드라이브 장치(Optical pickup apparatus and optical disk drive apparatus)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788540A (en) * 1980-11-21 1982-06-02 Olympus Optical Co Ltd Method and apparatus for information read-in of optical magnetic recording medium

Also Published As

Publication number Publication date
JPS5979446A (ja) 1984-05-08

Similar Documents

Publication Publication Date Title
EP0260114B1 (en) Opto-magnetic signal reproducing apparatus for reading, by differential detection using a magneto-optical effect, information magnetically recorded on a record medium
JPS61177655A (ja) 光磁気差動再生装置
JPH0363139B2 (enrdf_load_stackoverflow)
JP3626003B2 (ja) 光学的情報記憶装置
JPH034976B2 (enrdf_load_stackoverflow)
JPH03116567A (ja) 光磁気情報再生装置
US6741528B1 (en) Magneto-optical head device
JPH0327977B2 (enrdf_load_stackoverflow)
JPS59157856A (ja) 光磁気情報記録装置に於ける再生構造
JPS5877048A (ja) 光磁気記録再生方式における読取装置
JPS60157745A (ja) 光磁気記録装置
JPS63200346A (ja) 光磁気記録再生ヘツド
JPH03104041A (ja) 光磁気ディスク装置
JPH053666B2 (enrdf_load_stackoverflow)
JPS60223044A (ja) 光磁気再生装置
JPS63200347A (ja) 光磁気記録再生ヘツド
JPH06302044A (ja) 光ピックアップ装置
JP2574915B2 (ja) 光磁気記録媒体の再生用光学装置
JP2551129B2 (ja) 光磁気ディスク装置
JP3211483B2 (ja) 光ピックアップ装置
JPS61165845A (ja) 光学式再生装置
JPH02192053A (ja) 光磁気ディスク装置
JPS59168955A (ja) 光磁気情報記録装置に於ける再生構造
JPH0542741B2 (enrdf_load_stackoverflow)
JPS62134839A (ja) 光磁気再生装置