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DE69128884D1 - Magnetooptisches Wiedergabeverfahren und -vorrichtung - Google Patents

Magnetooptisches Wiedergabeverfahren und -vorrichtung

Info

Publication number
DE69128884D1
DE69128884D1 DE69128884T DE69128884T DE69128884D1 DE 69128884 D1 DE69128884 D1 DE 69128884D1 DE 69128884 T DE69128884 T DE 69128884T DE 69128884 T DE69128884 T DE 69128884T DE 69128884 D1 DE69128884 D1 DE 69128884D1
Authority
DE
Germany
Prior art keywords
magneto
reproduction method
optical reproduction
optical
reproduction
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 - Fee Related
Application number
DE69128884T
Other languages
English (en)
Other versions
DE69128884T2 (de
Inventor
Atsushi Fukumoto
Toshiki Udagawa
Shunji Yoshimura
Masumi Ono
Kouichi Yasuda
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69128884D1 publication Critical patent/DE69128884D1/de
Publication of DE69128884T2 publication Critical patent/DE69128884T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—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
    • 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
    • G11B11/10515—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
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
DE69128884T 1991-02-15 1991-10-18 Magnetooptisches Wiedergabeverfahren und -vorrichtung Expired - Fee Related DE69128884T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4450291 1991-02-15
PCT/JP1991/001435 WO1992015091A1 (en) 1991-02-15 1991-10-18 Optically recording medium

Publications (2)

Publication Number Publication Date
DE69128884D1 true DE69128884D1 (de) 1998-03-12
DE69128884T2 DE69128884T2 (de) 1998-09-03

Family

ID=12693329

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69128884T Expired - Fee Related DE69128884T2 (de) 1991-02-15 1991-10-18 Magnetooptisches Wiedergabeverfahren und -vorrichtung

Country Status (5)

Country Link
US (1) US5432774A (de)
EP (1) EP0525192B1 (de)
JP (1) JP3114204B2 (de)
DE (1) DE69128884T2 (de)
WO (1) WO1992015091A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05151574A (ja) * 1991-11-29 1993-06-18 Nec Corp 光学的情報記録消去方式
JP2954440B2 (ja) * 1993-01-22 1999-09-27 シャープ株式会社 光磁気記録媒体および光磁気記録方法
US5662988A (en) * 1993-01-22 1997-09-02 Sharp Kabushiki Kaisha Magneto-optical recording medium
US5610879A (en) * 1993-03-05 1997-03-11 Matsushita Electric Industrial Co. Ltd. Optical reproducing device, optical reproducing method using the same, and optical record medium used in the same
JPH0714231A (ja) * 1993-06-29 1995-01-17 Sharp Corp 光磁気ディスク、光ピックアップ及び光磁気ディスク装置
JP3164975B2 (ja) * 1994-08-24 2001-05-14 キヤノン株式会社 光磁気記録媒体及び該媒体を用いた情報再生方法
JPH08203142A (ja) * 1994-09-08 1996-08-09 Canon Inc 光記録媒体、光情報記録再生方法及び光情報記録再生装置
US5818811A (en) * 1994-09-08 1998-10-06 Canon Kabushiki Kaisha Information recording and reproducing method for recording information on and reproducing information from an optical recording medium including a land portion divided into a plurality of information tracks
JP3177395B2 (ja) * 1995-01-31 2001-06-18 シャープ株式会社 光磁気記録媒体及びその再生方法
JP3169790B2 (ja) * 1995-03-27 2001-05-28 シャープ株式会社 光磁気記録媒体及びその記録再生方法
US5949751A (en) * 1995-09-07 1999-09-07 Pioneer Electronic Corporation Optical recording medium and a method for reproducing information recorded from same
JPH0991761A (ja) * 1995-09-28 1997-04-04 Sony Corp 光記録媒体
US6118753A (en) * 1996-08-13 2000-09-12 Hewlett-Packard Company Erasable digital video disk with reference clock track
JPH1092045A (ja) * 1996-09-18 1998-04-10 Canon Inc 信号再生装置
JPH1092047A (ja) * 1996-09-19 1998-04-10 Canon Inc 光学的情報記録再生方法と光学的情報記録再生装置
US6175548B1 (en) * 1998-06-29 2001-01-16 Sony Corporation Optical recording medium and optical recording and reproducing apparatus
KR100338756B1 (ko) * 1999-07-20 2002-05-30 윤종용 상변화 광디스크
JP4391360B2 (ja) * 2004-08-27 2009-12-24 昭和電工株式会社 磁気記録媒体及びその磁気記録方法
US8139468B2 (en) * 2005-02-21 2012-03-20 Ricoh Company, Ltd. Optical recording medium and recording and reproducing method using the same
US20070048483A1 (en) * 2005-08-29 2007-03-01 Stinson Douglas G Radiation image-able data storage medium

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212627A (en) * 1981-06-24 1982-12-27 Tdk Corp Optical recording method
JPS62177737A (ja) * 1986-01-31 1987-08-04 Hitachi Ltd 磁気・光学変換器
JPS6450257A (en) * 1987-08-21 1989-02-27 Nikon Corp Multi-layered magneto-optical recording medium controlled in exchange bonding strength
JP2762445B2 (ja) * 1987-11-30 1998-06-04 ソニー株式会社 光磁気記録媒体の信号再生方法
JP2805746B2 (ja) * 1987-11-30 1998-09-30 ソニー株式会社 光磁気記録媒体の信号再生方法
JP2846342B2 (ja) * 1989-06-07 1999-01-13 株式会社日立製作所 高密度光再生装置
NL8902293A (nl) * 1989-09-14 1991-04-02 Philips Nv Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager.
JP2584122B2 (ja) * 1990-10-02 1997-02-19 松下電器産業株式会社 光記録媒体およびこの媒体を用いた情報記録消去方法
US5295131A (en) * 1990-10-02 1994-03-15 Matsushita Electric Industrial Co., Ltd. Optical information recording disk having embossed clock mark pits and embossed information recording pits
JP2910250B2 (ja) * 1990-12-27 1999-06-23 ソニー株式会社 光磁気記録媒体
JP2969963B2 (ja) * 1990-12-28 1999-11-02 ソニー株式会社 光磁気記録媒体における信号再生方法

Also Published As

Publication number Publication date
EP0525192A1 (de) 1993-02-03
US5432774A (en) 1995-07-11
JP3114204B2 (ja) 2000-12-04
DE69128884T2 (de) 1998-09-03
WO1992015091A1 (en) 1992-09-03
EP0525192A4 (en) 1993-05-26
EP0525192B1 (de) 1998-02-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee