DE3851943D1 - Verfahren und Gerät zur Aufnahme von magneto-optischen Platten. - Google Patents

Verfahren und Gerät zur Aufnahme von magneto-optischen Platten.

Info

Publication number
DE3851943D1
DE3851943D1 DE3851943T DE3851943T DE3851943D1 DE 3851943 D1 DE3851943 D1 DE 3851943D1 DE 3851943 T DE3851943 T DE 3851943T DE 3851943 T DE3851943 T DE 3851943T DE 3851943 D1 DE3851943 D1 DE 3851943D1
Authority
DE
Germany
Prior art keywords
optical disks
recording magneto
magneto
recording
disks
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
DE3851943T
Other languages
English (en)
Other versions
DE3851943T2 (de
Inventor
Nobuyuki Nagai
Takeshi Maeda
Atsushi Saito
Takeshi Nakao
Hitoshi Hitachi Maxel Watanabe
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.)
Hitachi Ltd
Maxell Holdings Ltd
Original Assignee
Hitachi Ltd
Hitachi Maxell 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 Hitachi Ltd, Hitachi Maxell Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3851943D1 publication Critical patent/DE3851943D1/de
Publication of DE3851943T2 publication Critical patent/DE3851943T2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
    • 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
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
    • 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
    • G11B11/1053—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 to compensate for the magnetic domain drift or time shift
    • 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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
DE3851943T 1987-12-25 1988-12-23 Verfahren und Gerät zur Aufnahme von magneto-optischen Platten. Expired - Fee Related DE3851943T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62326898A JP2647875B2 (ja) 1987-12-25 1987-12-25 光磁気信号記録再生方法

Publications (2)

Publication Number Publication Date
DE3851943D1 true DE3851943D1 (de) 1994-12-01
DE3851943T2 DE3851943T2 (de) 1995-05-11

Family

ID=18192978

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3851943T Expired - Fee Related DE3851943T2 (de) 1987-12-25 1988-12-23 Verfahren und Gerät zur Aufnahme von magneto-optischen Platten.

Country Status (4)

Country Link
US (1) US5060208A (de)
EP (1) EP0322817B1 (de)
JP (1) JP2647875B2 (de)
DE (1) DE3851943T2 (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387052B1 (de) * 1989-03-09 1995-09-20 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung
DE69026596T2 (de) * 1989-08-25 1996-10-10 Sony Corp Optisches speichermedium, datenspeicherverfahren und -wiedergabe
JP2785370B2 (ja) * 1989-08-25 1998-08-13 ソニー株式会社 光記録装置
JPH03171453A (ja) * 1989-11-29 1991-07-24 Sony Corp 光磁気信号再生方法
JP2586188B2 (ja) * 1990-07-19 1997-02-26 三菱電機株式会社 光ディスク装置
JP2731045B2 (ja) * 1991-04-30 1998-03-25 シャープ株式会社 情報記録再生装置
JPH05217171A (ja) * 1992-02-04 1993-08-27 Olympus Optical Co Ltd 光学的情報記録再生装置の情報再生回路
US5475666A (en) * 1992-03-04 1995-12-12 Mitsubishi Denki Kabushiki Kaisha Optically modulated overwritable recording device
US5450381A (en) * 1992-07-07 1995-09-12 Sony Corporation Magneto-optical recording utilizing signal phase adjustment
JPH06302042A (ja) * 1993-04-15 1994-10-28 Hitachi Ltd 光磁気ディスク装置
JPH06309672A (ja) * 1993-04-26 1994-11-04 Sony Corp 光ディスク記録媒体及び光ディスク装置
US5485320A (en) * 1993-05-24 1996-01-16 Trace Mountain Products, Inc. Method and apparatus for adjusting asymmetric recording signals
US5381390A (en) * 1993-06-03 1995-01-10 Eastman Kodak Company Directly overwrite information by using two radiation beams onto a single magneto-optical recording
JP3059860B2 (ja) * 1993-07-07 2000-07-04 三洋電機株式会社 ディスクプレーヤ
US5572502A (en) * 1993-09-28 1996-11-05 Hitachi, Ltd. Optical disk apparatus
JP3333613B2 (ja) * 1993-12-07 2002-10-15 株式会社日立製作所 光情報記録媒体並びに光情報記録再生方法及び光情報記録再生装置
JPH0917029A (ja) * 1995-06-26 1997-01-17 Pioneer Electron Corp 光ディスクとその読取装置および光ディスク製造方法
US5825724A (en) * 1995-11-07 1998-10-20 Nikon Corporation Magneto-optical recording method using laser beam intensity setting based on playback signal
US6125085A (en) * 1997-07-02 2000-09-26 Sharp Kabushiki Kaisha Optical recording method and device for optimally controlling the width of the recording marks
JP2000331394A (ja) * 1999-05-14 2000-11-30 Sanyo Electric Co Ltd 光磁気記録方法および光磁気記録装置
KR100313831B1 (ko) * 1999-06-29 2001-11-15 구자홍 광 디스크의 데이터 고속 억세스장치 및 억세스방법
US6636467B1 (en) * 2000-06-30 2003-10-21 Hewlett-Packard Development Company, L.P. Method and apparatus for accurately calibrating the timing of a write onto storage media
JP3781643B2 (ja) * 2001-07-03 2006-05-31 富士通株式会社 光磁気ディスク装置の磁気ヘッド駆動回路
US20030026182A1 (en) * 2001-08-06 2003-02-06 Fischer Michael C. Method and system for write clock synchronization in a data storage system
KR100468716B1 (ko) * 2001-09-07 2005-01-29 삼성전자주식회사 데이터 저장 시스템에서의 성능 개선을 위한 더미 라이트방법 및 장치
WO2003069615A2 (en) * 2002-02-14 2003-08-21 Koninklijke Philips Electronics N.V. Method and apparatus for phase and/or copy window control for use with a domain expansion recording medium and record carrier
US7586822B2 (en) * 2003-07-18 2009-09-08 Mediatek Inc. Optical drive controller providing calibrated laser diode driver
US8937514B2 (en) 2012-02-10 2015-01-20 Hittite Microwave Corporation Local oscillator (LO) driver circuit for a mixer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048806B2 (ja) * 1978-01-11 1985-10-29 ケイディディ株式会社 熱磁気記録方式
DE3006340C2 (de) * 1979-02-21 1986-09-18 Sharp K.K., Osaka Abtastzeitsteuerungsschaltung für ein Kassettenmagnetband-Datenwiedergabegerät
JPS5792446A (en) * 1980-11-26 1982-06-09 Olympus Optical Co Ltd Recording, reproduction and erasure system for information using photomagnetic recording medium
JPS57186247A (en) * 1981-05-11 1982-11-16 Fuji Xerox Co Ltd Photomagnetic recording medium
JPS5977648A (ja) * 1982-10-26 1984-05-04 Sharp Corp 光磁気記憶素子
US4612586A (en) * 1984-06-05 1986-09-16 Memorex Corporation Method for measuring timing asymmetry in a magnetic storage system
JPH07105081B2 (ja) * 1985-01-23 1995-11-13 株式会社日立製作所 光磁気ディスク装置及びその情報処理方法
JPH0721892B2 (ja) * 1985-02-14 1995-03-08 日本電気株式会社 光磁気記録方法
JPH0721896B2 (ja) * 1985-02-19 1995-03-08 日本電気株式会社 光磁気記録方法
JP2541186B2 (ja) * 1985-06-13 1996-10-09 富士通株式会社 自動位相調整回路
JP2606814B2 (ja) * 1985-06-14 1997-05-07 富士通株式会社 位相ずれ検出方法
JPS62110673A (ja) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd 情報検出方法
JP2559372B2 (ja) * 1986-07-09 1996-12-04 株式会社日立製作所 光ディスク装置及び光情報記録方法
US4907212A (en) * 1988-06-09 1990-03-06 Laser Magnetic Storage International Company Method and apparatus for calibrating an optical disk system

Also Published As

Publication number Publication date
EP0322817A2 (de) 1989-07-05
EP0322817A3 (de) 1991-03-13
JPH01169760A (ja) 1989-07-05
EP0322817B1 (de) 1994-10-26
DE3851943T2 (de) 1995-05-11
JP2647875B2 (ja) 1997-08-27
US5060208A (en) 1991-10-22

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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