KR100678360B1 - 광학 헤드, 광검출기, 광학 정보 기록 및 재생장치, 및초점 에러 검출방법 - Google Patents

광학 헤드, 광검출기, 광학 정보 기록 및 재생장치, 및초점 에러 검출방법 Download PDF

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KR100678360B1
KR100678360B1 KR1020000056939A KR20000056939A KR100678360B1 KR 100678360 B1 KR100678360 B1 KR 100678360B1 KR 1020000056939 A KR1020000056939 A KR 1020000056939A KR 20000056939 A KR20000056939 A KR 20000056939A KR 100678360 B1 KR100678360 B1 KR 100678360B1
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KR
South Korea
Prior art keywords
light
light receiving
signal
recording medium
optical head
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Expired - Fee Related
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KR1020000056939A
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English (en)
Korean (ko)
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KR20010030520A (ko
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니시노리아키
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소니 가부시끼 가이샤
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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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/133—Shape of individual detector elements
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
KR1020000056939A 1999-09-29 2000-09-28 광학 헤드, 광검출기, 광학 정보 기록 및 재생장치, 및초점 에러 검출방법 Expired - Fee Related KR100678360B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP99-277544 1999-09-29
JP27754499A JP4006904B2 (ja) 1999-09-29 1999-09-29 光ヘッド、光検出素子、光情報記録再生装置および焦点誤差検出方法

Publications (2)

Publication Number Publication Date
KR20010030520A KR20010030520A (ko) 2001-04-16
KR100678360B1 true KR100678360B1 (ko) 2007-02-05

Family

ID=17585030

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000056939A Expired - Fee Related KR100678360B1 (ko) 1999-09-29 2000-09-28 광학 헤드, 광검출기, 광학 정보 기록 및 재생장치, 및초점 에러 검출방법

Country Status (4)

Country Link
US (1) US6700842B1 (https=)
JP (1) JP4006904B2 (https=)
KR (1) KR100678360B1 (https=)
CN (1) CN1178209C (https=)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6754157B2 (en) * 2000-08-07 2004-06-22 Victor Company Of Japan, Limited Recording and/or reproducing apparatus and recording and/or reproducing method capable of detecting a land pre-pit on disc securely at a high precision
JP3857235B2 (ja) * 2001-02-01 2006-12-13 富士通株式会社 光学装置及び光記憶装置
KR20020072214A (ko) * 2001-03-09 2002-09-14 소니 가부시끼 가이샤 광디스크장치 및 광디스크장치를 위한 제어방법
JP2002319151A (ja) * 2001-04-24 2002-10-31 Sharp Corp 光ピックアップ装置
JP2003229627A (ja) * 2002-02-01 2003-08-15 Hitachi Ltd 光デバイスの実装方法及び光ヘッド装置
JP4050738B2 (ja) * 2003-11-07 2008-02-20 松下電器産業株式会社 アドレス信号位置検出装置、光ディスク再生装置およびアドレス信号位置検出方法
CN100361213C (zh) * 2004-07-27 2008-01-09 财团法人工业技术研究院 一种光学读写头
JP2006120243A (ja) * 2004-10-21 2006-05-11 Tdk Corp 光ヘッドの焦点ズレ誤差信号検出方法及びそれを用いた光記録再生装置
JP2006134447A (ja) * 2004-11-04 2006-05-25 Funai Electric Co Ltd 光ディスク再生装置
JP4561706B2 (ja) * 2005-11-16 2010-10-13 日本ビクター株式会社 光ピックアップ装置
KR20090043883A (ko) * 2007-10-30 2009-05-07 삼성전자주식회사 광픽업 및 이를 채용한 광정보저장매체 시스템
JP5542459B2 (ja) * 2010-01-25 2014-07-09 株式会社日立メディアエレクトロニクス 光ピックアップ装置及びそれを用いた光ディスク装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750030A (ja) * 1993-06-02 1995-02-21 Matsushita Electric Ind Co Ltd 光ピックアップ装置
KR19980070866A (ko) * 1997-01-29 1998-10-26 모리시다요이치 광 헤드
JPH11110765A (ja) * 1997-10-06 1999-04-23 Toshiba Corp 光ヘッド装置
KR19990067081A (ko) * 1995-10-27 1999-08-16 모리시타 요이찌 광헤드
US6430141B1 (en) * 1998-04-14 2002-08-06 Thomson Licensing, S.A. Device for reading from or writing to optical recording media

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04364231A (ja) * 1991-01-07 1992-12-16 Toshiba Corp 光学ヘッド装置
JP2860229B2 (ja) * 1993-06-25 1999-02-24 株式会社ケンウッド 光ディスク記録再生装置
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
JPH09180240A (ja) * 1995-12-21 1997-07-11 Hitachi Ltd 光ヘッド
JP3529937B2 (ja) * 1996-04-08 2004-05-24 ローム株式会社 光ピックアップ装置
JP3569107B2 (ja) * 1997-05-15 2004-09-22 株式会社三協精機製作所 光学ヘッド装置
US6353583B1 (en) * 1998-03-02 2002-03-05 Ricoh Company, Ltd. Signal operational circuit for a multi-beam pick-up device
US6418098B1 (en) * 1998-06-03 2002-07-09 Kabushiki Kaisha Toshiba Optical head apparatus for reproducing information from an optical recording medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750030A (ja) * 1993-06-02 1995-02-21 Matsushita Electric Ind Co Ltd 光ピックアップ装置
KR19990067081A (ko) * 1995-10-27 1999-08-16 모리시타 요이찌 광헤드
KR19980070866A (ko) * 1997-01-29 1998-10-26 모리시다요이치 광 헤드
JPH11110765A (ja) * 1997-10-06 1999-04-23 Toshiba Corp 光ヘッド装置
US6430141B1 (en) * 1998-04-14 2002-08-06 Thomson Licensing, S.A. Device for reading from or writing to optical recording media

Also Published As

Publication number Publication date
CN1297225A (zh) 2001-05-30
JP2001101681A (ja) 2001-04-13
CN1178209C (zh) 2004-12-01
US6700842B1 (en) 2004-03-02
KR20010030520A (ko) 2001-04-16
JP4006904B2 (ja) 2007-11-14

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