BR9908316A - Dispositivo de exploração óptica - Google Patents

Dispositivo de exploração óptica

Info

Publication number
BR9908316A
BR9908316A BR9908316-7A BR9908316A BR9908316A BR 9908316 A BR9908316 A BR 9908316A BR 9908316 A BR9908316 A BR 9908316A BR 9908316 A BR9908316 A BR 9908316A
Authority
BR
Brazil
Prior art keywords
scanning device
optical scanning
recording carrier
optical
scanning
Prior art date
Application number
BR9908316-7A
Other languages
English (en)
Inventor
Jeroen Wals
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BR9908316A publication Critical patent/BR9908316A/pt

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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive 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
    • G11B7/0901—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 track following only
    • G11B7/0906—Differential phase difference systems
    • 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
    • G11B7/0912—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 push-pull method
    • 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
    • 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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

Abstract

"DISPOSITIVO DE EXPLORAçãO óPTICA". Um dispositivo de exploração óptica para explorar um portador de gravação (68) dirige um feixe de radiação (61) para o portador de gravação. Dois sistemas de detecção (73, 74) são arranjados no trajeto do feixe
BR9908316-7A 1998-12-29 1999-12-17 Dispositivo de exploração óptica BR9908316A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98204477 1998-12-29
PCT/EP1999/010202 WO2000039792A1 (en) 1998-12-29 1999-12-17 Optical scanning device

Publications (1)

Publication Number Publication Date
BR9908316A true BR9908316A (pt) 2000-11-07

Family

ID=8234571

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908316-7A BR9908316A (pt) 1998-12-29 1999-12-17 Dispositivo de exploração óptica

Country Status (6)

Country Link
US (1) US6399932B1 (pt)
EP (1) EP1057176A1 (pt)
JP (1) JP2002533865A (pt)
KR (1) KR100704731B1 (pt)
BR (1) BR9908316A (pt)
WO (1) WO2000039792A1 (pt)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW451072B (en) * 1999-09-30 2001-08-21 Koninkl Philips Electronics Nv Optical scanning device
US6967916B2 (en) * 2000-10-10 2005-11-22 Matsushita Electric Industrial Co., Ltd. Optical head apparatus, optical information recording and reproducing apparatus, method for detecting aberration and method for adjusting optical head apparatus
JP3769666B2 (ja) * 2000-11-09 2006-04-26 日本電気株式会社 収差補正方法および光ディスク装置
KR100754158B1 (ko) * 2000-12-08 2007-09-03 삼성전자주식회사 구면수차 검출 및/또는 보정 가능한 광픽업장치
KR100354771B1 (ko) 2000-12-28 2002-10-05 삼성전자 주식회사 기록매체 두께 변화 검출 및/또는 그 두께 변화에 의해발생된 구면수차 보정 가능한 광픽업장치
JP2002324328A (ja) * 2001-04-25 2002-11-08 Pioneer Electronic Corp 情報再生装置および光学式記録媒体
JP4723114B2 (ja) * 2001-05-18 2011-07-13 日立コンピュータ機器株式会社 フォーカス制御装置およびフォーカス引き込み方法
JP2002358677A (ja) * 2001-05-28 2002-12-13 Hitachi Ltd 光ヘッド及び光ディスク装置
US7277365B2 (en) 2001-12-07 2007-10-02 Matsushita Electric Industrial Co., Ltd. Optical information processing apparatus and method of processing optical information
KR100906472B1 (ko) * 2002-05-21 2009-07-08 삼성전자주식회사 다중 검출기를 이용한 광기록매체 데이터 재생 장치
JP2004062938A (ja) * 2002-07-25 2004-02-26 Pioneer Electronic Corp 球面収差補正装置及び球面収差補正方法
CN1299274C (zh) * 2002-10-02 2007-02-07 松下电器产业株式会社 光盘装置
JP2004158073A (ja) * 2002-11-05 2004-06-03 Tdk Corp 受光装置、光検出装置、および、光信号再生装置
JP4329364B2 (ja) 2003-03-07 2009-09-09 ソニー株式会社 光学ヘッド、記録及び／又は再生装置
JP4231759B2 (ja) * 2003-09-22 2009-03-04 株式会社日立メディアエレクトロニクス 光情報記録装置
JP4775634B2 (ja) * 2005-11-30 2011-09-21 ソニー株式会社 光ピックアップ装置、および光ディスク装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076038A (ja) 1983-10-03 1985-04-30 Mitsubishi Electric Corp 光学式情報処理装置
US4724533A (en) 1984-06-15 1988-02-09 Matsushita Electric Industrial Co., Ltd. Optical head
US4742218A (en) * 1985-03-11 1988-05-03 Hitachi, Ltd. Focus error detection apparatus utilizing focusing an front and rear sides of focal planes
KR940001999B1 (ko) 1989-06-06 1994-03-12 샤프 가부시끼가이샤 광 픽업장치
EP0745980B1 (en) * 1991-11-20 1999-06-16 Sony Corporation Optical pickup device
WO1993010528A1 (en) * 1991-11-20 1993-05-27 Sony Corporation Optical disk
KR970008231B1 (en) * 1992-06-03 1997-05-22 Lg Electronics Inc Optical pick-up apparatus
JP3161891B2 (ja) 1993-11-16 2001-04-25 松下電器産業株式会社 ディスクチルト検出装置およびディスクチルト補正装置
US5708634A (en) * 1995-09-20 1998-01-13 Zen Research N.V. Focussing system and methods for multi-track optical disk apparatus
DE69724541T2 (de) * 1996-03-11 2004-07-29 Seiko Epson Corp. Optische abtastvorrichtung und optisches aufzeichnungsgerät

Also Published As

Publication number Publication date
KR100704731B1 (ko) 2007-04-06
EP1057176A1 (en) 2000-12-06
KR20010041401A (ko) 2001-05-15
JP2002533865A (ja) 2002-10-08
US6399932B1 (en) 2002-06-04
WO2000039792A1 (en) 2000-07-06

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 11A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2094 DE 22/02/2011.