KR950704783A - 광디스크 기록장치 - Google Patents

광디스크 기록장치

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Publication number
KR950704783A
KR950704783A KR1019950702221A KR19950702221A KR950704783A KR 950704783 A KR950704783 A KR 950704783A KR 1019950702221 A KR1019950702221 A KR 1019950702221A KR 19950702221 A KR19950702221 A KR 19950702221A KR 950704783 A KR950704783 A KR 950704783A
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KR
South Korea
Prior art keywords
signal
recording
optical disc
reflected light
optical disk
Prior art date
Application number
KR1019950702221A
Other languages
English (en)
Inventor
요시히로 야마나까
쥰 사이또오
신이찌 구리따
Original Assignee
오노 시게오
가부시기가이샤 니콘
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Application filed by 오노 시게오, 가부시기가이샤 니콘 filed Critical 오노 시게오
Publication of KR950704783A publication Critical patent/KR950704783A/ko

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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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • G11B11/10595—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
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1879—Direct read-after-write methods
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

여분의 헤드광학시스템을 필요로 하지 않으며 데이터체크의 동작에 요하는 시간을 단축할 수 있는 광디스크 기록장치. 신호기록중의 광디스크로부터의 반사광에 기초한 신호의 교란을 검출함에 따라, 신호기록중에 광디스크상에 신호가 바르게 기록되어 있는지 아닌지를 판단한다.

Description

광디스크 기록장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 대한 광디스크 기록장치의 구성을 나타낸 블록도.

Claims (8)

  1. 레이저광을 조사함에 따라 광디스크에 신호를 기록하는 신호기록수단과, 신호기록중에 광디스크로부터의 반사광을 수광하여, 반사광신호를 출력하는 반사광신호검출회로와, 반사광신호의 교란을 검출함에 따라, 광디스크에 신호가 정상으로 기록되고 있는지 아닌지를 판단하는 판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
  2. 제1항에 있어서, 반사광신호검출회로의 주파수영역이 신호기록주파수보다도 낮은 것을 특징으로 하는 광디스크 기록장치.
  3. 광디스크에 레이저광을 강도변조하면서, 조사함에 따라 광디스크에 신호를 기록하는 헤드와 레이저광의 광디스크로부터의 반사광을 수광하여 전기신호를 변환하는 광검출기와, 광검출기로부터의 신호를 받아서, 반사광신호의 이상을 검출함에 따라, 광디스크에 기록이 정상으로 기록되어 있는지 아닌지를 판단하는 이상판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
  4. 제3항에 있어서, 신호검출회로의 주파수영역이 레이저광의 강도변조주파수보다도 낮은 것을 특징으로 하는 광디스크 기록장치.
  5. 광디스크에 레이저광을 강도변조하면서, 조사함에 따라 광디스크에 신호를 기록하는 헤드와, 레이저광의 광디스크로부터의 반사광을 수광하여, 전기신호로 변환하는 광검출기와, 광검출기로부터의 신호를 받아서 자동 포커스 제어를 위한 서어보신호를 출력하는 서어보신호검출회로와, 서어보신호를 받아서 서어보신호의 이상을 검출함에 따라, 광디스크에 전술한 신호가 정상으로 기록되어 있는지 아닌지를 이상판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
  6. 레이저광을 기록신호에 따라서 강도변조하면서 광디스크에 조사함에 따라 광디스크에 신호를 기록하는 헤드와, 레이저광의 광디스크로부터의 반사광을 수광하여, 전기신호로 변환하는 광검출기와, 광검출기로부터의 신호를 받고, 반사광신호를 출력하는 신호검출회로와, 반사광신호와 기록신호를 받아서, 이것들 양 신호를 비교하는 비교회로와, 비교회로로부터의 출력에 따라, 광디스크에 신호가 정상으로 기록되고 있는지 아닌지를 판단하는 이상판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
  7. GdFeCo 재생층을 구비한 직접·중복기재할 수 있는 광자기디스크에 레이저광을 조사함에 따라 신호를 기록하는 신호기록수단과, 신호기록중에, 광디스크로부터의 반사광의 케르효과를 검출하는 케르효과 검출부와, 케르효과 검출부로부터의 출력에 따라, 광디스크에 데이터가 정상으로 기록되어 있는지 아닌지를 판단하는 판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
  8. GeFeCo 재생층을 구비한 직접·중복기재할 수 있는 광자기디스크에 레이저광을 조사함에 따라 신호를 기록하는 헤드와, 신호기록중에 광디스크로부터의 반사광의 케르효과를 검출하는 케르효과 검출보와, 레이저광의 광디스크로부터의 반사광을 수광하여 전기신호로 변환하는 광검출기와, 광검출기로부터의 신호를 받아서, 반사광신호를 출력하는 신호검출회로와, 케르효과 검출부로부터의 출력과 반사광신호에 따라 광디스크에 신호가 정상으로 기록되어 있는지 아닌지를 판단하는 판단회로 등을 구비한 것을 특징으로 하는 광디스크 기록장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950702221A 1993-10-06 1994-10-06 광디스크 기록장치 KR950704783A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP25073593 1993-10-06
JP93-250735 1993-10-06
PCT/JP1994/001670 WO1995010111A1 (fr) 1993-10-06 1994-10-06 Dispositif d'enregistrement sur disque optique

Publications (1)

Publication Number Publication Date
KR950704783A true KR950704783A (ko) 1995-11-20

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Application Number Title Priority Date Filing Date
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Country Status (4)

Country Link
US (1) US5682366A (ko)
EP (1) EP0673030A4 (ko)
KR (1) KR950704783A (ko)
WO (1) WO1995010111A1 (ko)

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EP0673030A4 (en) 1996-02-21
EP0673030A1 (en) 1995-09-20
WO1995010111A1 (fr) 1995-04-13
US5682366A (en) 1997-10-28

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