KR890004277A - 정보기록 재생 방법 및 광디스크 기록 재생장치 - Google Patents
정보기록 재생 방법 및 광디스크 기록 재생장치 Download PDFInfo
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- KR890004277A KR890004277A KR1019870008782A KR870008782A KR890004277A KR 890004277 A KR890004277 A KR 890004277A KR 1019870008782 A KR1019870008782 A KR 1019870008782A KR 870008782 A KR870008782 A KR 870008782A KR 890004277 A KR890004277 A KR 890004277A
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- recording
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- pulse
- information
- reproducing
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
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- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 피트 에지 기록 방식을 설명하기 위한 도면. 제 2 도는 형성된 피트와 빔 이동거리의 관계를 도시한 도면. 제 3 도는 기록 파워와 어긋남양의 관계를 도시한 도면.
Claims (14)
- 입력 변조 신호에 의해 레이저 광의 강도를 변조하고, 상기 변조된 레이저광을 기록 매체에 조사해서국부적인 기록영역을 형성하고, 상기 기록 영역의 앞가장자리 및 뒤가장자리를 데이타로서 기록 재생하는 정보기록 재생방법으로서, 기록시에는 상기 입력 변조 신호(32)의 펄스 폭보다도 작은 펄스폭의 기록 펄스로 상기 레이저 광의 강도를 변조하고, 재생시에는 상기 기록 영역의 앞가장자리 및 뒤가장자리에 대응한 신호를 각 각 독립으로 검출하여, 양신호의 시간 간격을 보정하는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 1 항에 있어서, 동기화 신호, 트랙번지, 섹터번지, 에터 정정 코드를 포함하는 헤더 신호를 사전에 프리 포매트해 놓는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 1 항에 있어서, 기록시에 상기 기록 펄스의 펄스폭 또는 펄스 높이를 상기 입력 변조 신호의 펄스 간격에 따라서 제어하는 것을 특징으로하는 정보 기록 재생 방법.
- 특허 청구의 범위 제 1 항에 있어서, 기록시에 상기 기록 펄스의 펄스폭 또는 펄스 높이를 기록 매체상의 기록 위치에 따라서 제어하는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 4 항에 있어서, 헤더 영역에 라이트되어 있는 트랙 번호를 사용하여 상기 기록 펄스의 제어를 행하는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 4 항에 있어서, 기록 및 재생용 광 헤드의 위치를 검출하기 위한 외부 스케일에서의 신호를 사용하여 상기 기록 펄스의 제어를 행하는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 2 항에 있어서, 상기 헤더 신호는 위상 정보로써 기록하고, 이 헤더 신호이외의 데이타 신호는 가변 정보로써 기록하는 것을 특징으로하는 정보 기록 재생방법.
- 특허 청구의 범위 제 2 항에 있어서, 상기 헤더 신호는 상기 입력 변조 신호의 변화점을 중심으로 하는 피트 포지션 기록 방식을 사용해서 형성한 것을 특징으로하는 정보 기록 재생 방법.
- 특허 청구의 범위 제 1 항에 있어서, 재생시의 데이타열의 시간축 보정을 행하기 위한 동기화 신호로써, 복조 개시 동기화 신호를 상기 기록 영역의 앞가장자리 및 뒤가장자리로 독립해서 2중으로 마련한 것을 특징으로 하는 정보 기록 재생방법.
- 디스크상 기록 매체에 기록해야할 정보에 따라서 레이저 광을 조사하여 국부적인 기록 영역을 형성하고, 상기 기록 매체에서 이 기록 영역에 따른 재생 파형을 얻는 헤드, 입력 변조 신호의 펄스폭보다 작은 펄스폭의 기록 펄스로 상기 레이저 광의 강도를 변조하는 수단, 상기 재생 파형에서 상기 기록 영역의 앞가장자리 및 뒤가장자리에 대응한 신호를 각각 독립으로 검출하는 검출 수단과, 상기 앞가장자리를 표시하는 신호와 뒤가장자리를 표시하는 신호의 시간 간격을 보정하는 보정 수단을 마련하는 것을 특징으로하는 광디스크 기록 재생 장치.
- 특허 청구의 범위 제10항에 있어서, 상기 기록 광펄스의 펄스 높이 또는 펄스폭을 상기 디스크상 기록매체의 기록 반경에 따라서, 제어하는 것을 특징으로하는 광 디스크 재생 장치.
- 특허 청구의 범위 제 10항에 있어서, 상기 기록 광 펄스의 파워와 펄스폭을 상기 기록해야할 정보의 패턴의 소밀에 의해서 제어하는 것을 특징으로 하는 광 디스크 기록 재생장치.
- 특허 청구의 범위 제10항에 있어서, 데이타 신호가, 셀프 클럭 발생수단 및 데이타 복조 개시 위치 발생 수단으로서의 동기화 신호, 잘못 정정용 신호 및 사용자 데이타로 구성되는 것을 특징으로하는 광 디스크 기록 재생장치.
- 특허 청구의 범위 제10항에 있어서, 앞가장자리에서의 재생 신호와, 뒤가장자리에서의 재생 신호에서 셀프 클럭을 발생하는 수단을 별개로 독립해서 마련하는 것을 특징으로 하는 광 디스크 기록 재생장치.※ 참고사항 : 최초출원내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP?61-195376 | 1986-08-22 | ||
JP195376 | 1986-08-22 | ||
JP61195376A JP2810035B2 (ja) | 1986-08-22 | 1986-08-22 | 光学的記録再生方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890004277A true KR890004277A (ko) | 1989-04-21 |
KR910001275B1 KR910001275B1 (ko) | 1991-02-26 |
Family
ID=16340136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019870008782A KR910001275B1 (ko) | 1986-08-22 | 1987-08-11 | 정보 기록 재생 방법 및 광 디스크 기록 재생 장치 |
Country Status (4)
Country | Link |
---|---|
US (2) | US4866692A (ko) |
JP (1) | JP2810035B2 (ko) |
KR (1) | KR910001275B1 (ko) |
DE (1) | DE3727681A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100677745B1 (ko) * | 2004-10-08 | 2007-02-02 | 삼성전자주식회사 | 기록펄스열의 에너지레벨을 이용하여 기록펄스열을최적화할 수 있는 광디스크 기록장치 및 기록펄스열최적화방법 |
KR100638063B1 (ko) * | 1997-04-11 | 2007-05-04 | 소니 가부시끼 가이샤 | 레이저광의파워제어방법,광디스크의데이터기록방법및광디스크기록장치 |
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US5493549A (en) * | 1990-04-10 | 1996-02-20 | Seiko Epson Corporation | Optical recording regeneration apparatus with compensation circuit |
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JP2852792B2 (ja) * | 1990-07-05 | 1999-02-03 | 三菱電機株式会社 | 光ディスク装置 |
US5235590A (en) * | 1991-03-20 | 1993-08-10 | Fujitsu Limited | Read out apparatus for reading out information from magneto-optic disk |
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JP3327933B2 (ja) * | 1991-08-29 | 2002-09-24 | 株式会社リコー | 情報記録再生方法及びその装置 |
US7286153B1 (en) * | 1991-10-11 | 2007-10-23 | Hitachi, Ltd. | Three-dimensional recording and reproducing apparatus |
DE69220015T2 (de) * | 1991-12-27 | 1997-09-25 | Matsushita Electric Ind Co Ltd | Optische Platten Lesegerät |
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- 1987-08-17 US US07/085,964 patent/US4866692A/en not_active Ceased
- 1987-08-19 DE DE19873727681 patent/DE3727681A1/de active Granted
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- 1991-09-11 US US07/757,911 patent/USRE35435E/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100638063B1 (ko) * | 1997-04-11 | 2007-05-04 | 소니 가부시끼 가이샤 | 레이저광의파워제어방법,광디스크의데이터기록방법및광디스크기록장치 |
KR100677745B1 (ko) * | 2004-10-08 | 2007-02-02 | 삼성전자주식회사 | 기록펄스열의 에너지레벨을 이용하여 기록펄스열을최적화할 수 있는 광디스크 기록장치 및 기록펄스열최적화방법 |
Also Published As
Publication number | Publication date |
---|---|
JPS6353722A (ja) | 1988-03-08 |
KR910001275B1 (ko) | 1991-02-26 |
JP2810035B2 (ja) | 1998-10-15 |
US4866692A (en) | 1989-09-12 |
DE3727681C2 (ko) | 1991-07-18 |
DE3727681A1 (de) | 1988-03-17 |
USRE35435E (en) | 1997-01-28 |
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