JPH0522305B2 - - Google Patents

Info

Publication number
JPH0522305B2
JPH0522305B2 JP58239119A JP23911983A JPH0522305B2 JP H0522305 B2 JPH0522305 B2 JP H0522305B2 JP 58239119 A JP58239119 A JP 58239119A JP 23911983 A JP23911983 A JP 23911983A JP H0522305 B2 JPH0522305 B2 JP H0522305B2
Authority
JP
Japan
Prior art keywords
signal
magneto
light
photodetectors
optical disk
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
JP58239119A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60129954A (ja
Inventor
Tooru Nakamura
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 JPS60129954A (ja) 1985-07-11
JPH0522305B2 true JPH0522305B2 (ru) 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 (ru)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61199254A (ja) * 1985-02-27 1986-09-03 ゼロツクス　コ−ポレ−シヨン 光デイスク装置
JPS6290807A (ja) * 1985-06-17 1987-04-25 新日本化学工業株式会社 電気絶縁材料用マグネシア焼結粉体
JPS6260147A (ja) * 1985-09-11 1987-03-16 Matsushita Electric Ind Co Ltd 光磁気デイスク
JP2574765B2 (ja) * 1986-07-09 1997-01-22 株式会社日立製作所 光磁気デイスク装置
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
JP2795271B2 (ja) * 1996-10-23 1998-09-10 株式会社日立製作所 光ディスク装置
CN100533576C (zh) * 2002-03-08 2009-08-26 索尼公司 记录介质及其再现及制造方法和装置、记录装置
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

Also Published As

Publication number Publication date
JPS60129954A (ja) 1985-07-11

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