DE69629358D1 - Optisches Speichergerät - Google Patents

Optisches Speichergerät

Info

Publication number
DE69629358D1
DE69629358D1 DE69629358T DE69629358T DE69629358D1 DE 69629358 D1 DE69629358 D1 DE 69629358D1 DE 69629358 T DE69629358 T DE 69629358T DE 69629358 T DE69629358 T DE 69629358T DE 69629358 D1 DE69629358 D1 DE 69629358D1
Authority
DE
Germany
Prior art keywords
storage device
optical storage
optical
storage
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
DE69629358T
Other languages
English (en)
Other versions
DE69629358T2 (de
Inventor
Takashi Masaki
Shigenori Yanagi
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 Corp
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
Application granted granted Critical
Publication of DE69629358D1 publication Critical patent/DE69629358D1/de
Publication of DE69629358T2 publication Critical patent/DE69629358T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • G11B7/0045—Recording
    • 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
    • G11B7/006—Overwriting
    • 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
    • G11B11/10517—Overwriting or erasing
DE69629358T 1996-04-26 1996-12-23 Optisches Speichergerät Expired - Lifetime DE69629358T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10675296 1996-04-26
JP10675296A JP3457463B2 (ja) 1996-04-26 1996-04-26 光学的記憶装置

Publications (2)

Publication Number Publication Date
DE69629358D1 true DE69629358D1 (de) 2003-09-11
DE69629358T2 DE69629358T2 (de) 2004-04-08

Family

ID=14441653

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69634706T Expired - Fee Related DE69634706T2 (de) 1996-04-26 1996-12-23 Optisches Speichergerät
DE69629358T Expired - Lifetime DE69629358T2 (de) 1996-04-26 1996-12-23 Optisches Speichergerät

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69634706T Expired - Fee Related DE69634706T2 (de) 1996-04-26 1996-12-23 Optisches Speichergerät

Country Status (5)

Country Link
US (2) US5732055A (de)
EP (2) EP0803866B1 (de)
JP (1) JP3457463B2 (de)
CN (2) CN1099670C (de)
DE (2) DE69634706T2 (de)

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JP3753105B2 (ja) * 2002-07-10 2006-03-08 ティアック株式会社 光ディスク装置
JP4070529B2 (ja) * 2002-07-15 2008-04-02 パイオニア株式会社 情報記録装置及び方法、並びに波形データ生成装置及び方法
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Also Published As

Publication number Publication date
JPH09293259A (ja) 1997-11-11
DE69634706T2 (de) 2005-11-10
EP1184854A3 (de) 2002-03-13
DE69634706D1 (de) 2005-06-09
EP0803866B1 (de) 2003-08-06
EP1184854B1 (de) 2005-05-04
EP1184854A2 (de) 2002-03-06
EP0803866A3 (de) 1998-01-21
EP0803866A2 (de) 1997-10-29
JP3457463B2 (ja) 2003-10-20
CN1099670C (zh) 2003-01-22
DE69629358T2 (de) 2004-04-08
CN1164095A (zh) 1997-11-05
US6115338A (en) 2000-09-05
CN1235207C (zh) 2006-01-04
CN1379402A (zh) 2002-11-13
US5732055A (en) 1998-03-24

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Owner name: PANASONIC CORP., KADOMA, OSAKA, JP