HK1023446A1 - Method of and apparatus for optical information reproduction - Google Patents

Method of and apparatus for optical information reproduction

Info

Publication number
HK1023446A1
HK1023446A1 HK00102485A HK00102485A HK1023446A1 HK 1023446 A1 HK1023446 A1 HK 1023446A1 HK 00102485 A HK00102485 A HK 00102485A HK 00102485 A HK00102485 A HK 00102485A HK 1023446 A1 HK1023446 A1 HK 1023446A1
Authority
HK
Hong Kong
Prior art keywords
optical information
information reproduction
reproduction
optical
information
Prior art date
Application number
HK00102485A
Other languages
English (en)
Inventor
Masayoshi Shimamoto
Takehiko Umeyama
Yoshiji Inoue
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of HK1023446A1 publication Critical patent/HK1023446A1/xx

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
    • G11B7/13—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
    • G11B7/08—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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/08—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

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
HK00102485A 1998-01-16 2000-04-26 Method of and apparatus for optical information reproduction HK1023446A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00658398A JP3544847B2 (ja) 1998-01-16 1998-01-16 光学的情報再生方法および装置

Publications (1)

Publication Number Publication Date
HK1023446A1 true HK1023446A1 (en) 2000-09-08

Family

ID=11642358

Family Applications (1)

Application Number Title Priority Date Filing Date
HK00102485A HK1023446A1 (en) 1998-01-16 2000-04-26 Method of and apparatus for optical information reproduction

Country Status (8)

Country Link
US (1) US6339567B1 (xx)
EP (1) EP0930612B1 (xx)
JP (1) JP3544847B2 (xx)
KR (1) KR100285135B1 (xx)
CN (1) CN1138261C (xx)
DE (1) DE69930884T2 (xx)
HK (1) HK1023446A1 (xx)
TW (1) TW412721B (xx)

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US6111329A (en) * 1999-03-29 2000-08-29 Graham; Gregory S. Armature for an electromotive device
TWI233805B (en) * 1999-07-01 2005-06-11 Fujisawa Pharmaceutical Co Stabilized pharmaceutical composition in lyophilized form as antifungal agent
US7102967B1 (en) * 1999-07-08 2006-09-05 Samsung Electronics Co., Ltd. Method and apparatus for tracking error detection in optical disk driver
US20050068864A1 (en) * 1999-07-08 2005-03-31 Samsung Electronics Co., Ltd. Method and apparatus for tracking error detection in optical disk driver
KR100713545B1 (ko) * 1999-12-15 2007-04-30 엘지전자 주식회사 광디스크의 트래킹 방법 및 장치
JP2001195754A (ja) * 2000-01-13 2001-07-19 Matsushita Electric Ind Co Ltd トラッキング誤差検出装置
TW480356B (en) * 2000-02-11 2002-03-21 Koninkl Philips Electronics Nv Optical transducer and recording/playback device comprising the transducer
US7113460B2 (en) * 2000-03-06 2006-09-26 Sharp Kabushiki Kaisha Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical disk
JP3883100B2 (ja) * 2001-05-30 2007-02-21 富士通株式会社 トラッキング制御方法及び記憶装置
JP2005524192A (ja) * 2002-05-01 2005-08-11 エルジー エレクトロニクス インコーポレーテッド 高密度再生専用光ディスクとそれによる光ディスク装置及び方法
JP3665629B2 (ja) 2002-07-30 2005-06-29 株式会社東芝 光ディスク装置と光ディスク装置の外乱学習方法
CN1331139C (zh) * 2002-08-26 2007-08-08 松下电器产业株式会社 光盘装置、光盘种类辨别方法及球面像差调整方法
US7196977B2 (en) * 2002-10-31 2007-03-27 Matsushita Electric Industrial Co., Ltd. Track jump control circuit for accessing optical disk drive
TWI242184B (en) * 2003-01-30 2005-10-21 Lite On It Corp Disc discrimination method for discriminating disc type of digital versatile disc
CN1293564C (zh) * 2003-01-31 2007-01-03 松下电器产业株式会社 信号处理装置以及信号处理方法
TWI257621B (en) * 2003-09-30 2006-07-01 Mediatek Inc Track locking method and apparatus for optical disk device
KR20070026863A (ko) * 2004-06-28 2007-03-08 코닌클리케 필립스 일렉트로닉스 엔.브이. 광 디스크 판독의 강건성 개선방법
CN100349217C (zh) * 2004-10-20 2007-11-14 建兴电子科技股份有限公司 可补偿摇摆定址信号的光盘机及其方法
WO2006129683A1 (ja) * 2005-06-01 2006-12-07 Matsushita Electric Industrial Co., Ltd. 位相誤差検出装置
KR101039194B1 (ko) * 2006-07-27 2011-06-03 미쓰비시덴키 가부시키가이샤 광디스크 매체 및 광디스크 장치
KR20090061248A (ko) * 2007-12-11 2009-06-16 삼성전자주식회사 트래킹 에러 신호 검출 방법 및 장치
JP2009146491A (ja) * 2007-12-13 2009-07-02 Hitachi Ltd 光ディスク装置
US9917645B2 (en) * 2016-05-25 2018-03-13 Google Llc Phase sensitive beam tracking
JP6767219B2 (ja) * 2016-09-21 2020-10-14 株式会社東芝 オフセット検出回路
CN113874922B (zh) * 2019-05-29 2023-08-18 亚萨合莱有限公司 基于样本的相位差来确定移动钥匙装置的位置
EP3745155A1 (en) 2019-05-29 2020-12-02 Assa Abloy AB Determining a position of a mobile key device based on phase difference of samples
US11646059B2 (en) * 2021-08-30 2023-05-09 Seagate Technology Llc Estimating read offset in a drive using machine learning

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057833A (en) 1974-10-03 1977-11-08 U.S. Philips Corporation Centering detection system for an apparatus for playing optically readable record carriers
NL182258C (nl) 1976-01-28 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestructuur.
JPH063648B2 (ja) * 1986-01-16 1994-01-12 松下電器産業株式会社 光学的情報再生装置
JPH056575Y2 (xx) * 1986-04-18 1993-02-19
JPH02108244A (ja) * 1988-10-17 1990-04-20 Matsushita Electric Ind Co Ltd 光学的情報再生装置
JPH09288832A (ja) * 1996-04-22 1997-11-04 Toshiba Corp トラッキングエラー信号生成回路
TW364992B (en) * 1996-04-25 1999-07-21 Toshiba Corp Optic data regeneration apparatus and control method thereof
DE19627383A1 (de) * 1996-07-06 1998-01-08 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
US6028826A (en) * 1996-09-18 2000-02-22 Matsushita Electric Industrial Co., Ltd. Optical disk apparatus performing correction of phase difference tracking error signal, adjustment of focus position and process of gain adjustment

Also Published As

Publication number Publication date
KR19990067899A (ko) 1999-08-25
EP0930612B1 (en) 2006-04-19
TW412721B (en) 2000-11-21
EP0930612A2 (en) 1999-07-21
JPH11203693A (ja) 1999-07-30
CN1138261C (zh) 2004-02-11
CN1233041A (zh) 1999-10-27
KR100285135B1 (ko) 2001-03-15
US6339567B1 (en) 2002-01-15
DE69930884T2 (de) 2006-11-30
DE69930884D1 (de) 2006-05-24
JP3544847B2 (ja) 2004-07-21
EP0930612A3 (en) 2000-05-03

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20140115