TW200519893A - Method of determining setting of spherical aberration corrector - Google Patents

Method of determining setting of spherical aberration corrector

Info

Publication number
TW200519893A
TW200519893A TW093129645A TW93129645A TW200519893A TW 200519893 A TW200519893 A TW 200519893A TW 093129645 A TW093129645 A TW 093129645A TW 93129645 A TW93129645 A TW 93129645A TW 200519893 A TW200519893 A TW 200519893A
Authority
TW
Taiwan
Prior art keywords
spherical aberration
aberration correction
data carrier
incident beam
optical data
Prior art date
Application number
TW093129645A
Other languages
Chinese (zh)
Inventor
Petrus Theodorus Jutte
Johannus Leopolus Bakx
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 TW200519893A publication Critical patent/TW200519893A/en

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
    • G11B7/12—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
    • 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
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

The invention discloses a method of determining the setting of a spherical aberration correction to be applied to an optical beam in an apparatus for reading data from and/or writing data onto an optical data carrier, especially a Blu-ray disk. An incident beam is, generated and focused onto the optical data carrier so as to produce a reflected beam. A spherical aberration correction is applied to the incident beam. A difference signal, which results from a difference between the intensities of two substantially symmetrical portions of the reflected beam, for example the radial push-pull signal (PP) or the radial wobble signal, is measured during a relative movement between the incident beam and the optical data carrier. A specific setting (VO) of the spherical aberration correction, which maximizes the amplitude of the difference signal, is determined
TW093129645A 2003-10-01 2004-09-30 Method of determining setting of spherical aberration corrector TW200519893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03300140 2003-10-01

Publications (1)

Publication Number Publication Date
TW200519893A true TW200519893A (en) 2005-06-16

Family

ID=34400602

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093129645A TW200519893A (en) 2003-10-01 2004-09-30 Method of determining setting of spherical aberration corrector

Country Status (2)

Country Link
TW (1) TW200519893A (en)
WO (1) WO2005034100A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200715278A (en) * 2005-06-29 2007-04-16 Koninkl Philips Electronics Nv Optimization of spherical aberration to determine current layer
JP5199675B2 (en) * 2005-11-22 2013-05-15 パナソニック株式会社 Optical disc and optical disc apparatus
CN101354893B (en) * 2007-07-24 2010-07-07 建兴电子科技股份有限公司 Method for calibrating optimum spherical aberration compensation position standard of CD ROM

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3836995B2 (en) * 1999-05-06 2006-10-25 シャープ株式会社 Optical recording medium and optical recording / reproducing apparatus
JP2001266392A (en) * 2000-03-23 2001-09-28 Pioneer Electronic Corp Optical information recording and reproducing device
US20020036958A1 (en) * 2000-07-24 2002-03-28 Hidenori Wada Optical element, optical head, optical recording/reproducing apparatus and optical recording/reproducing method
JP3769666B2 (en) * 2000-11-09 2006-04-26 日本電気株式会社 Aberration correction method and optical disc apparatus
JP3765235B2 (en) * 2001-02-16 2006-04-12 日本電気株式会社 Optical disk device
JP3819756B2 (en) * 2001-10-23 2006-09-13 富士通株式会社 Optical information processing equipment
KR20030042913A (en) * 2001-11-26 2003-06-02 삼성전자주식회사 Recording/reproducing apparatus and control method thereof

Also Published As

Publication number Publication date
WO2005034100A3 (en) 2005-06-02
WO2005034100A2 (en) 2005-04-14

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