TW200639835A - Disc drive apparatus with non-linear observer - Google Patents

Disc drive apparatus with non-linear observer

Info

Publication number
TW200639835A
TW200639835A TW095102284A TW95102284A TW200639835A TW 200639835 A TW200639835 A TW 200639835A TW 095102284 A TW095102284 A TW 095102284A TW 95102284 A TW95102284 A TW 95102284A TW 200639835 A TW200639835 A TW 200639835A
Authority
TW
Taiwan
Prior art keywords
read
value
signal
control circuit
drive apparatus
Prior art date
Application number
TW095102284A
Other languages
English (en)
Inventor
Marcel Francois Heertjes
Carsten Patz
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 TW200639835A publication Critical patent/TW200639835A/zh

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
    • 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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
    • 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
    • G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
    • 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
    • G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Evolutionary Computation (AREA)
  • Medical Informatics (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
TW095102284A 2005-01-21 2006-01-20 Disc drive apparatus with non-linear observer TW200639835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05100366 2005-01-21

Publications (1)

Publication Number Publication Date
TW200639835A true TW200639835A (en) 2006-11-16

Family

ID=36603704

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095102284A TW200639835A (en) 2005-01-21 2006-01-20 Disc drive apparatus with non-linear observer

Country Status (7)

Country Link
US (1) US20080130435A1 (zh)
EP (1) EP1844466A2 (zh)
JP (1) JP2008529193A (zh)
KR (1) KR20070106730A (zh)
CN (1) CN101107652A (zh)
TW (1) TW200639835A (zh)
WO (1) WO2006077548A2 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5569276B2 (ja) * 2010-09-09 2014-08-13 株式会社デンソー 車両用現在位置検出装置
CN114771886A (zh) * 2022-02-24 2022-07-22 哈尔滨工业大学 基于卡尔曼滤波的空间转动机构重力卸载装置与方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139940A (ja) * 1984-07-31 1986-02-26 Pioneer Electronic Corp 光情報デイスク再生装置
US5220549A (en) * 1991-02-19 1993-06-15 Olympus Optical Co., Ltd. Information recording/reproducing apparatus which includes pickup having memory for storing specific characteristics thereof
JPH05307848A (ja) * 1992-05-01 1993-11-19 Ricoh Co Ltd 閉ループ制御システムおよび光ディスク装置のサーボ装置
JPH06232746A (ja) * 1993-02-05 1994-08-19 Sansei Denshi Japan Kk デジタルサーボ回路
US5367513A (en) * 1993-11-05 1994-11-22 International Business Machines Corporation Focus and tracking servo decoupling system
US5696752A (en) * 1996-01-16 1997-12-09 Eastman Kodak Company Low noise atip detection from an optical recording medium with wobbled grooves
US5982721A (en) * 1996-03-29 1999-11-09 Cirrus Logic, Inc. Optical disc drive comprising switching gains for forcing phase states to follow a sliding line trajectory in a servo system
DE19640870A1 (de) * 1996-10-04 1998-04-09 Thomson Brandt Gmbh Aufzeichnungs- oder Wiedergabegerät für optische Informationsträger mit einem Servo-Regelkreis und Verfahren zur Fehlersignalbehandlung in einem solchen
US5909661A (en) * 1997-05-30 1999-06-01 Hewlett-Packard Company Method and apparatus for decomposing drive error signal noise sources
DE19757440A1 (de) * 1997-12-23 1999-06-24 Thomson Brandt Gmbh Automatisiertes Einstellen der Verstärkung in Regelkreisen
TW482996B (en) * 1998-12-14 2002-04-11 Asustek Comp Inc Electronic dynamic compensator of the servo device of optical pickup head
US6339565B1 (en) * 1999-03-31 2002-01-15 Lsi Logic Corporation Non-linear center-error generator for DVD servo control
JP3589347B2 (ja) * 1999-09-13 2004-11-17 松下電器産業株式会社 光ディスク装置
US20040037193A1 (en) * 2000-07-12 2004-02-26 Palle Andersen Method for improved reading of a digital data disc

Also Published As

Publication number Publication date
WO2006077548A3 (en) 2006-10-05
US20080130435A1 (en) 2008-06-05
JP2008529193A (ja) 2008-07-31
WO2006077548A2 (en) 2006-07-27
CN101107652A (zh) 2008-01-16
KR20070106730A (ko) 2007-11-05
EP1844466A2 (en) 2007-10-17

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