JPS60129954A - 光磁気デイスクレコ−ダ - Google Patents

光磁気デイスクレコ−ダ

Info

Publication number
JPS60129954A
JPS60129954A JP23911983A JP23911983A JPS60129954A JP S60129954 A JPS60129954 A JP S60129954A JP 23911983 A JP23911983 A JP 23911983A JP 23911983 A JP23911983 A JP 23911983A JP S60129954 A JPS60129954 A JP S60129954A
Authority
JP
Japan
Prior art keywords
signal
prism
signals
disk
photodetectors
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
JP23911983A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0522305B2 (enrdf_load_stackoverflow
Inventor
Toru Nakamura
徹 中村
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23911983A priority Critical patent/JPS60129954A/ja
Publication of JPS60129954A publication Critical patent/JPS60129954A/ja
Publication of JPH0522305B2 publication Critical patent/JPH0522305B2/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
    • 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 Recording Or Reproduction (AREA)
JP23911983A 1983-12-19 1983-12-19 光磁気デイスクレコ−ダ Granted JPS60129954A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23911983A JPS60129954A (ja) 1983-12-19 1983-12-19 光磁気デイスクレコ−ダ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23911983A JPS60129954A (ja) 1983-12-19 1983-12-19 光磁気デイスクレコ−ダ

Publications (2)

Publication Number Publication Date
JPS60129954A true JPS60129954A (ja) 1985-07-11
JPH0522305B2 JPH0522305B2 (enrdf_load_stackoverflow) 1993-03-29

Family

ID=17040070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23911983A Granted JPS60129954A (ja) 1983-12-19 1983-12-19 光磁気デイスクレコ−ダ

Country Status (1)

Country Link
JP (1) JPS60129954A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578083A1 (fr) * 1985-02-27 1986-08-29 Xerox Corp Unite de disque optique utilisant les formes effacable et non effacable de stockage
JPS6260147A (ja) * 1985-09-11 1987-03-16 Matsushita Electric Ind Co Ltd 光磁気デイスク
US4879703A (en) * 1986-07-09 1989-11-07 Hitachi, Ltd. Magneto-optic memory apparatus with defect detection of recording medium during erasing operation
US4879101A (en) * 1985-06-17 1989-11-07 Shin Nihon Chemical Industry Co., Ltd. Method for producing a magnesia powder for use as an electrical insulating material
US5251196A (en) * 1987-09-30 1993-10-05 Deutsche Thomson-Brandt Gmbh Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium
JPH09106591A (ja) * 1996-10-23 1997-04-22 Hitachi Ltd 光磁気ディスク装置
WO2003077250A1 (fr) * 2002-03-08 2003-09-18 Sony Corporation Support d'enregistrement et dispositif de reproduction associe, procede de reproduction, appareil destine a la fabrication de ce support d'enregistrement, procede de fabrication de ce support d'enregistrement et dispositif d'enregistrement
WO2004023461A1 (ja) * 2002-08-30 2004-03-18 Fujitsu Limited 光学的記憶装置及び光学的記録媒体の読出し方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744241A (en) * 1980-08-27 1982-03-12 Matsushita Electric Ind Co Ltd Magnetooptic reproducer
JPS57117106A (en) * 1981-01-09 1982-07-21 Olympus Optical Co Ltd Optical magnetic recording and reproducing method
JPS5982646A (ja) * 1982-10-29 1984-05-12 Sharp Corp 光磁気記憶装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744241A (en) * 1980-08-27 1982-03-12 Matsushita Electric Ind Co Ltd Magnetooptic reproducer
JPS57117106A (en) * 1981-01-09 1982-07-21 Olympus Optical Co Ltd Optical magnetic recording and reproducing method
JPS5982646A (ja) * 1982-10-29 1984-05-12 Sharp Corp 光磁気記憶装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578083A1 (fr) * 1985-02-27 1986-08-29 Xerox Corp Unite de disque optique utilisant les formes effacable et non effacable de stockage
US4879101A (en) * 1985-06-17 1989-11-07 Shin Nihon Chemical Industry Co., Ltd. Method for producing a magnesia powder for use as an electrical insulating material
JPS6260147A (ja) * 1985-09-11 1987-03-16 Matsushita Electric Ind Co Ltd 光磁気デイスク
US4879703A (en) * 1986-07-09 1989-11-07 Hitachi, Ltd. Magneto-optic memory apparatus with defect detection of recording medium during erasing operation
US5251196A (en) * 1987-09-30 1993-10-05 Deutsche Thomson-Brandt Gmbh Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium
JPH09106591A (ja) * 1996-10-23 1997-04-22 Hitachi Ltd 光磁気ディスク装置
WO2003077250A1 (fr) * 2002-03-08 2003-09-18 Sony Corporation Support d'enregistrement et dispositif de reproduction associe, procede de reproduction, appareil destine a la fabrication de ce support d'enregistrement, procede de fabrication de ce support d'enregistrement et dispositif d'enregistrement
US7689105B2 (en) 2002-03-08 2010-03-30 Sony Corporation Record medium and its reproducer, reproducing method, record medium manufacturing apparatus, record medium manufacturing method, and recorder
WO2004023461A1 (ja) * 2002-08-30 2004-03-18 Fujitsu Limited 光学的記憶装置及び光学的記録媒体の読出し方法
US7283445B2 (en) 2002-08-30 2007-10-16 Fujitsu Limited Optical storage device and reading method for optical storage medium

Also Published As

Publication number Publication date
JPH0522305B2 (enrdf_load_stackoverflow) 1993-03-29

Similar Documents

Publication Publication Date Title
JPS60129954A (ja) 光磁気デイスクレコ−ダ
JPH09115154A (ja) 種々の記憶密度の光学記録媒体用の再生及び／又は記録装置
JPH034976B2 (enrdf_load_stackoverflow)
JPH0546622B2 (enrdf_load_stackoverflow)
JP3260771B2 (ja) 光学焦点検出装置と光ビームの焦点を検出する方法
JPS60129935A (ja) 光学的情報処理装置
JPH07169129A (ja) 光ヘッド
JPS6376116A (ja) 光記録再生方法
JPS6299936A (ja) 光磁気型記録再生媒体
JPS60234235A (ja) 光学式記録再生装置
KR100291218B1 (ko) 광픽업의 재생신호 검출방법
JPH04155640A (ja) 光ヘッド
JP3361340B2 (ja) 多重記録光磁気記録媒体及び該多重記録光磁気記録媒体への情報記録方法
JP3086465B2 (ja) 信号再生方法
JPH1064135A (ja) 光情報記録検出装置
JPS607636A (ja) 光磁気記録再生方式
JPS6129423A (ja) 光記録媒体の記録再生方法
JPS62128034A (ja) 光磁気デイスク用光学ヘツド
JPS6273442A (ja) 磁気光学記憶素子
JPS6047241A (ja) 光ヘツド装置
JPH10312543A (ja) 関連情報記録方法および光ディスク
JPS63217550A (ja) 光磁気デイスク装置
JPS621148A (ja) 光磁気効果による情報記録再生装置
JPH04324130A (ja) 光ディスク装置
JPH01118227A (ja) 光記録再生装置