DE69834803D1 - Vorrichtung zur optischen Speicherung sowie Verfahren zur Speicherung und Wiedergabe - Google Patents

Vorrichtung zur optischen Speicherung sowie Verfahren zur Speicherung und Wiedergabe

Info

Publication number
DE69834803D1
DE69834803D1 DE69834803T DE69834803T DE69834803D1 DE 69834803 D1 DE69834803 D1 DE 69834803D1 DE 69834803 T DE69834803 T DE 69834803T DE 69834803 T DE69834803 T DE 69834803T DE 69834803 D1 DE69834803 D1 DE 69834803D1
Authority
DE
Germany
Prior art keywords
reproduction
storage
storage device
optical storage
optical
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
DE69834803T
Other languages
English (en)
Other versions
DE69834803T2 (de
Inventor
Akira Minami
Yoshiyuki Nanba
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69834803D1 publication Critical patent/DE69834803D1/de
Application granted granted Critical
Publication of DE69834803T2 publication Critical patent/DE69834803T2/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B11/10595—Control of operating function
    • 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
    • G11B11/10515—Reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69834803T 1998-03-16 1998-09-30 Vorrichtung zur optischen Speicherung sowie Verfahren zur Speicherung und Wiedergabe Expired - Fee Related DE69834803T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP06499098A JP3778399B2 (ja) 1998-03-16 1998-03-16 光学的記憶装置及び光記憶媒体の記録再生方法
JP6499098 1998-03-16

Publications (2)

Publication Number Publication Date
DE69834803D1 true DE69834803D1 (de) 2006-07-20
DE69834803T2 DE69834803T2 (de) 2006-11-09

Family

ID=13274015

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69834803T Expired - Fee Related DE69834803T2 (de) 1998-03-16 1998-09-30 Vorrichtung zur optischen Speicherung sowie Verfahren zur Speicherung und Wiedergabe

Country Status (6)

Country Link
US (1) US6331966B1 (de)
EP (1) EP0944051B1 (de)
JP (1) JP3778399B2 (de)
KR (1) KR100341667B1 (de)
CN (1) CN1112678C (de)
DE (1) DE69834803T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3429166B2 (ja) 1997-08-28 2003-07-22 富士通株式会社 光学的記憶装置
JP2000182292A (ja) * 1998-12-15 2000-06-30 Fujitsu Ltd 光学的記憶装置及び光記憶媒体の記録再生方法
TW494403B (en) * 1998-12-24 2002-07-11 Koninkl Philips Electronics Nv Device having a first operational state for writing information onto a record carrier
US6557126B1 (en) * 2000-01-31 2003-04-29 Oak Technology, Inc. Method and apparatus for calibrating write power
DE10064775A1 (de) 2000-12-22 2002-06-27 Thomson Brandt Gmbh Verfahren und Anordnung zum Regeln der Lichtleistung eines Abtaststrahls in einem Gerät zum Lesen oder zum Beschreiben optischer Aufzeichnungsträger
KR20030065879A (ko) * 2002-02-01 2003-08-09 주식회사 히타치엘지 데이터 스토리지 코리아 광디스크의 기록파워 자동조절장치
CN1695189A (zh) * 2002-11-29 2005-11-09 富士通株式会社 磁光存储介质的再现方法和使用该方法的磁光存储装置
CN101101761A (zh) * 2003-10-03 2008-01-09 日本先锋公司 信息记录介质和信息记录装置及方法
TWI233114B (en) * 2003-10-24 2005-05-21 Lite On It Corp Method of determining the time of executing optimal power calibration of an optical drive
TWI226603B (en) * 2003-10-29 2005-01-11 Mediatek Inc A method for handling an interrupt request in an optical storage drive
KR100563677B1 (ko) * 2003-11-04 2006-03-28 엘지전자 주식회사 기록 장치에서의 최적 기록 파워 서치방법 및 이를 위한기록매체
KR20050081260A (ko) * 2004-02-11 2005-08-19 삼성전자주식회사 초해상 정보저장매체에 기록된 정보 재생방법 및 장치
TW200532675A (en) * 2004-03-26 2005-10-01 Liteon It Corp Method of determining the time of adjusting writing strategy of an optical drive
US7366997B1 (en) * 2005-01-11 2008-04-29 Synplicity, Inc. Methods and apparatuses for thermal analysis based circuit design
TW200721121A (en) * 2005-06-29 2007-06-01 Koninkl Philips Electronics Nv Detection of data degeneration within optical discs
US8369191B2 (en) * 2010-11-29 2013-02-05 Tdk Corporation Method for controlling the current of laser diode on thermally assisted magnetic recording head
JP5808273B2 (ja) * 2012-03-01 2015-11-10 株式会社日立製作所 磁気ヘッド、ヘッド駆動制御装置、磁気記憶装置、その制御方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179904A (ja) 1982-04-15 1983-10-21 Pioneer Electronic Corp 情報記録方式
JPS61260439A (ja) 1985-05-14 1986-11-18 Canon Inc 光学的情報記録装置
JPH01191325A (ja) 1988-01-25 1989-08-01 Canon Inc 光学的情報処理装置
JP2573281B2 (ja) 1988-02-05 1997-01-22 株式会社東芝 光磁気ディスクの再生方法
JP3057516B2 (ja) * 1991-02-05 2000-06-26 ソニー株式会社 光記録媒体の信号再生方法
JP3057517B2 (ja) * 1991-02-05 2000-06-26 ソニー株式会社 光記録媒体の信号再生方法
JP2959586B2 (ja) 1991-02-12 1999-10-06 ソニー株式会社 光磁気ディスクの再生方法
DE69120671T2 (de) * 1991-02-13 1997-02-27 Sony Corp Verfahren zur wiedergabe von signalen in optischem aufzeichnungsmedium
JPH06150423A (ja) 1993-01-07 1994-05-31 Ricoh Co Ltd 光磁気記録装置
US5596555A (en) * 1993-07-29 1997-01-21 Canon Kabushiki Kaisha Magnetooptical recording medium having magnetic layers that satisfy predetermined coercive force relationships, and recording/reproduction method for the medium
US5637394A (en) * 1993-12-17 1997-06-10 Sharp Kabushiki Kaisha Magneto-optical recording medium and method of reproducing magneto-optical information using thereof
JP3088619B2 (ja) * 1994-01-17 2000-09-18 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
US5699342A (en) * 1994-02-07 1997-12-16 Mitsubishi Denki Kabushiki Kaisha Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser
JP3492800B2 (ja) * 1995-02-17 2004-02-03 富士通株式会社 光記録装置及び再生レーザパワー設定方法
JPH10188385A (ja) * 1996-12-17 1998-07-21 Fujitsu Ltd 光磁気記録媒体の再生方法及び再生装置
KR100239468B1 (ko) * 1997-11-14 2000-01-15 구자홍 광자기 기록매체로부터 기록 정보를 재생하는 방법 및 장치

Also Published As

Publication number Publication date
JP3778399B2 (ja) 2006-05-24
KR100341667B1 (ko) 2002-10-31
EP0944051B1 (de) 2006-06-07
DE69834803T2 (de) 2006-11-09
US6331966B1 (en) 2001-12-18
EP0944051A3 (de) 2002-01-30
KR19990076529A (ko) 1999-10-15
EP0944051A2 (de) 1999-09-22
CN1112678C (zh) 2003-06-25
CN1229230A (zh) 1999-09-22
JPH11259925A (ja) 1999-09-24

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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