BR9708479A - Aparelho para controle de feixe focalizado de energia radiante e processo de focalizar um feixe de energia radiante - Google Patents

Aparelho para controle de feixe focalizado de energia radiante e processo de focalizar um feixe de energia radiante

Info

Publication number
BR9708479A
BR9708479A BR9708479A BR9708479A BR9708479A BR 9708479 A BR9708479 A BR 9708479A BR 9708479 A BR9708479 A BR 9708479A BR 9708479 A BR9708479 A BR 9708479A BR 9708479 A BR9708479 A BR 9708479A
Authority
BR
Brazil
Prior art keywords
output
detector
radiant energy
error signal
periodic function
Prior art date
Application number
BR9708479A
Other languages
English (en)
Other versions
BR9708479B1 (pt
Inventor
Ludwig Ceshkovsky
Original Assignee
Discovision Ass
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 Discovision Ass filed Critical Discovision Ass
Publication of BR9708479A publication Critical patent/BR9708479A/pt
Publication of BR9708479B1 publication Critical patent/BR9708479B1/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
    • G11B7/12—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
    • 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
    • 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
    • G11B7/0903—Multi-beam tracking 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
    • 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
    • G11B7/085—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

Landscapes

  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Lasers (AREA)
  • Control Of Eletrric Generators (AREA)
  • Recrystallisation Techniques (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Electric Motors In General (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Paper (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Optical Head (AREA)
  • Tires In General (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
BRPI9708479-4A 1996-04-01 1997-03-24 aparelho para controle de um feixe focalizado de energia radiante e processo de focalizar um feixe de energia radiante. BR9708479B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/625,273 US5689485A (en) 1996-04-01 1996-04-01 Tracking control apparatus and method
PCT/US1997/004731 WO1997037347A1 (en) 1996-04-01 1997-03-24 Closed loop servo operation for focus control

Publications (2)

Publication Number Publication Date
BR9708479A true BR9708479A (pt) 1999-04-13
BR9708479B1 BR9708479B1 (pt) 2009-05-05

Family

ID=24505325

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI9708479-4A BR9708479B1 (pt) 1996-04-01 1997-03-24 aparelho para controle de um feixe focalizado de energia radiante e processo de focalizar um feixe de energia radiante.
BR9701608A BR9701608A (pt) 1996-04-01 1997-04-01 Aparelho para detecção de um objeto usando um feixe de energia radiante processo para controle de um feixe de energia radiante e aparelho para controle de trilhamento para um sistema de disco ótico

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR9701608A BR9701608A (pt) 1996-04-01 1997-04-01 Aparelho para detecção de um objeto usando um feixe de energia radiante processo para controle de um feixe de energia radiante e aparelho para controle de trilhamento para um sistema de disco ótico

Country Status (20)

Country Link
US (3) US5689485A (pt)
EP (2) EP0800166B1 (pt)
JP (2) JP3239293B2 (pt)
KR (1) KR100306541B1 (pt)
CN (2) CN1099669C (pt)
AT (2) ATE195606T1 (pt)
AU (2) AU722720B2 (pt)
BR (2) BR9708479B1 (pt)
CA (2) CA2200286C (pt)
DE (3) DE69702799T2 (pt)
DK (1) DK0800166T3 (pt)
ES (1) ES2118687T3 (pt)
HK (1) HK1003679A1 (pt)
ID (1) ID16516A (pt)
IL (1) IL126392A (pt)
MY (1) MY119172A (pt)
NO (1) NO316555B1 (pt)
PT (1) PT800166E (pt)
SG (1) SG47213A1 (pt)
WO (1) WO1997037347A1 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5689485A (en) 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
DE69933251T2 (de) * 1998-02-13 2007-05-16 Yamaha Corp., Hamamatsu Aufzeichnungstechnik für optische Platten zur Bildung von genau spurzentrierten Pits und Servoabgleicheinstellungstechnik zur Aufzeichnung auf optischen Platten
JP2000113614A (ja) 1998-10-09 2000-04-21 Sony Corp ドライブ装置、定速移動サーボ方法
DE19930513A1 (de) * 1999-07-05 2001-01-11 Thomson Brandt Gmbh Gerät zum Abtasten optischer Aufzeichnungsträger
US6744711B1 (en) * 2000-06-20 2004-06-01 Discovision Associates Method and apparatus for a high-speed search of an optical medium
JP2002203324A (ja) * 2000-10-25 2002-07-19 Sony Computer Entertainment Inc フォーカス制御装置、フォーカス制御方法
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US7113360B2 (en) * 2002-06-28 2006-09-26 Seagate Technology Llc Manufacture of concentric patterns from spiral source
KR100498455B1 (ko) * 2002-11-07 2005-07-01 삼성전자주식회사 서보 시스템의 루프이득을 제어하기 위한 장치 및 방법
US7450483B2 (en) * 2003-04-28 2008-11-11 Panasonic Corporation Information carrier apparatus and information carrier eccentricity correction method
JP4361090B2 (ja) * 2003-05-16 2009-11-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 拡張焦点制御装置及び方法
CN1961363A (zh) * 2004-06-01 2007-05-09 皇家飞利浦电子股份有限公司 在光学存储系统中消除径向对聚焦的串扰
KR20070026884A (ko) * 2004-07-14 2007-03-08 코닌클리케 필립스 일렉트로닉스 엔.브이. 트래킹 에러 신호 보정 방법 및 이 방법을 수행하는 디스크드라이브
JP2008507072A (ja) * 2004-07-14 2008-03-06 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 改善されたトラッキングエラー信号のキャリブレーション方法、及びかかる方法を実現するディスクドライブ
JP4256353B2 (ja) * 2005-02-17 2009-04-22 ファナック株式会社 サーボ制御装置及びサーボ系の調整方法
EP1804100B1 (en) * 2005-12-30 2018-02-21 Datalogic IP TECH S.r.l. Device and method for focusing a laser light beam
JP2009069041A (ja) * 2007-09-14 2009-04-02 Fujinon Corp 光ピックアップ用波面測定装置
CN115047215B (zh) * 2022-02-18 2023-03-21 太原理工大学 三轴振动加速度信号耦合修正检测系统及方法

Family Cites Families (170)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32709A (en) * 1861-07-02 Soda-water apparatus
US32051A (en) * 1861-04-16 Lotjghlin
US32431A (en) * 1861-05-28 Improvement in cultivators
US32574A (en) * 1861-06-18 Wateb-elevator
US4893297A (en) 1968-06-06 1990-01-09 Discovision Associates Disc-shaped member
US3530258A (en) * 1968-06-28 1970-09-22 Mca Technology Inc Video signal transducer having servo controlled flexible fiber optic track centering
US3633038A (en) * 1970-05-01 1972-01-04 Newell Ind Transducer-positioning system using radiation-sensitive means
US3908080A (en) * 1972-10-24 1975-09-23 Mca Disco Vision Method of making an extended play video disc record
US3829622A (en) * 1972-10-24 1974-08-13 Mca Disco Vision Video disc player with variably biased pneumatic head
US3944727A (en) * 1972-10-24 1976-03-16 Mca Discovision, Inc. Video disc player with movable mirror for directing light beam onto reflective disc
US3924062A (en) * 1972-10-24 1975-12-02 Mca Disco Vision Disc record with skipped standard video increments and continuous audio increments and a method and apparatus for reproduction
US3908076A (en) * 1972-10-24 1975-09-23 Mca Disco Vision Extended play videodisc recording system
US4703467A (en) * 1972-10-24 1987-10-27 Discovision Associates Video disc read back scanner
US4809247A (en) * 1972-10-24 1989-02-28 Discovision Associates Video disc head tracking apparatus
US4451913A (en) * 1972-10-24 1984-05-29 Discovision Associates Video disc read back scanner
US4282598A (en) * 1972-10-24 1981-08-04 Discovision Associates Video disc read back scanner
US3914541A (en) * 1972-12-11 1975-10-21 Mca Disco Vision Video disc player
US4225873A (en) * 1978-03-27 1980-09-30 Mca Disco-Vision, Inc. Recording and playback system
US4583210A (en) * 1973-02-20 1986-04-15 Discovision Associates Method and apparatus for storing and retrieving information
US4611318A (en) * 1973-02-20 1986-09-09 Discovision Associates Method and apparatus for monitoring the storage of information on a storage medium
US3794410A (en) * 1973-02-20 1974-02-26 Mca Disco Vision Articulated mirror
US4358802A (en) * 1973-10-01 1982-11-09 Mca Disco-Vision, Inc. Fluid cushion turntable for video disc player
US3932700A (en) * 1974-02-04 1976-01-13 Zenith Radio Corporation Focus tracking registration for optical reproducing systems
US3997715A (en) * 1974-03-25 1976-12-14 Mca Disco-Vision, Inc. Focusing system for videodisc player
AR205839A1 (es) * 1974-09-30 1976-06-07 Mca Disco Vision Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video
GB1603596A (en) * 1977-06-06 1981-11-25 Mca Disco Vision Optical transducer and focusing system
US4161752A (en) * 1977-06-28 1979-07-17 International Business Machines Corporation High density video disk having two pit depths
US4161753A (en) * 1977-07-08 1979-07-17 International Business Machines Corporation Video recording disk with interlacing of data for frames on the same track
US4340955A (en) * 1978-03-27 1982-07-20 Discovision Associates Video disc player
US4456914A (en) * 1978-03-27 1984-06-26 Discovision Associates Method and apparatus for storing information on a storage medium
US4439848A (en) * 1978-03-27 1984-03-27 Discovision Associates Focusing system for video disc player
USRE32709E (en) 1978-03-27 1988-07-05 Discovision Associates Tracking system for video disc player
US4370679A (en) * 1978-03-27 1983-01-25 Discovision Associates Gain correction system for videodisc player apparatus
US4358796A (en) * 1978-03-27 1982-11-09 Discovision Associates Spindle servo system for videodisc player
USRE32051E (en) 1978-03-27 1985-12-17 Discovision Associates Tracking system and method for video disc player
US4371899A (en) * 1978-03-27 1983-02-01 Discovision Associates Time base error correction system for player
US4374323A (en) * 1978-06-30 1983-02-15 Discovision Associates Focusing apparatus for use in a system for recovering information from an optically-readable storage medium
USRE32574E (en) 1978-06-30 1988-01-05 Discovision Associates Method and apparatus for information retrieval from an optically readable storage medium
US4375091A (en) * 1978-06-30 1983-02-22 Discovision Associates Method and apparatus for information retrieval from an optically readable storage medium
NL7808638A (nl) * 1978-08-22 1980-02-26 Philips Nv Inrichting voor het uitlezen van een schijfvormige re- gistratiedrager.
US4228326A (en) * 1978-11-16 1980-10-14 Mca Discovision Inc. System for recording information on a rotatable storage disc, in a substantially uniform recording density
US4190860A (en) * 1978-11-16 1980-02-26 Mca Discovision, Inc. Digital method and apparatus for rotating an information storage disc
USRE32431E (en) 1978-11-16 1987-06-02 Discovision Associates System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate
US4232201A (en) * 1978-11-24 1980-11-04 Mca Discovision, Inc. Dithered center tracking system
US4232337A (en) * 1978-12-13 1980-11-04 Mca Discovision, Inc. Method and apparatus for tracking an optically readable information track
US4234837A (en) * 1979-01-12 1980-11-18 Mca Discovision, Inc. Digital center tracking system
US4236105A (en) * 1979-01-12 1980-11-25 Mca Discovision, Inc. Digital center tracking system
US4310919A (en) * 1979-01-15 1982-01-12 Discovision Associates Optical video disc structure
US4252327A (en) * 1979-02-16 1981-02-24 Mca Discovision, Inc. Video disc player
US4367545A (en) * 1979-02-16 1983-01-04 Discovision Associates Video disc player
US4271334A (en) * 1979-04-06 1981-06-02 Discovision Associates Apparatus for correcting for temperature-induced tracking errors in a system for recovering information from a recording disc
GB2046979B (en) * 1979-04-17 1983-05-18 Burroughs Corp Recording and replay apparatus employing rotary media
US4397805A (en) * 1979-04-18 1983-08-09 Discovision Associates Method for making a video disc
US4337534A (en) * 1979-04-18 1982-06-29 Discovision Associates Solid state electro-optical track follower array
US4353090A (en) * 1979-06-20 1982-10-05 Discovision Associates Extended play video recording and reproducing system with selection of multiplexed audio
US4583131A (en) * 1979-08-15 1986-04-15 Discovision Associates Method and apparatus for stop-motion playback of a record disc
US5018020A (en) 1979-08-15 1991-05-21 Discovision Associates Record disc for storing separate video and audio information
US4445209A (en) * 1979-08-27 1984-04-24 Discovision Associates Dithered focusing systems
US4322837A (en) * 1979-08-27 1982-03-30 Discovision Associates Dithered center tracking system
US4358774A (en) * 1980-07-14 1982-11-09 Discovision Associates Apparatus and method for controlling focus in a recording system
US4357533A (en) * 1980-07-14 1982-11-02 Discovision Associates Focus detector for an optical disc playback system
US4467467A (en) * 1980-10-20 1984-08-21 Discovision Associates Video recorder-playback machine
US4347599A (en) * 1980-10-20 1982-08-31 Discovision Associates Spindle clamp assembly for a video recorder-playback machine
US4337538A (en) * 1980-10-20 1982-06-29 Discovision Associates Drive assembly for a video recorder-playback machine
US4488279A (en) * 1980-10-20 1984-12-11 Discovision Associates Video recorder-playback machine
US4450488A (en) * 1980-10-31 1984-05-22 Discovision Associates System for recording continuous-play and stop-motion signal
US4463389A (en) * 1980-10-31 1984-07-31 Discovision Associates System for recording and playing back continuous-play and stop-motion signals
US4571716A (en) * 1981-02-02 1986-02-18 Discovision Associates Method and apparatus for scanning a recording medium for defects
US4980878A (en) 1981-02-02 1990-12-25 Discovision Associates Method and apparatus for scanning a recording medium for defects
US4406000A (en) * 1981-03-31 1983-09-20 Discovision Associates Tracking system for optical record medium
US4414655A (en) * 1981-03-31 1983-11-08 Discovision Associates Scanning beam control system
JPS57181436A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical disc device
US4412743A (en) * 1981-09-08 1983-11-01 Discovision Associates Off-axis light beam defect detector
JPS5870434A (ja) * 1981-10-22 1983-04-26 Toshiba Corp 光学ヘツド
JPS5888874A (ja) * 1981-11-20 1983-05-27 Toshiba Corp 情報記録再生装置
NL8105346A (pt) * 1981-11-26 1983-06-16
US4796098A (en) * 1981-12-04 1989-01-03 Discovision Associates Banded and interleaved video disc format with duplicate information stored at different disc locations
US4504939A (en) * 1981-12-10 1985-03-12 Discovision Associates Storage medium track pitch detector
US4648084A (en) * 1981-12-10 1987-03-03 Discovision Associates Storage medium track pitch detector
US4759007A (en) * 1981-12-10 1988-07-19 Discovision Associates Storage medium track pitch detector
US4566090A (en) * 1981-12-10 1986-01-21 Discovision Associates Storage medium track pitch detector
US4445144A (en) * 1981-12-21 1984-04-24 Discovision Associates Method for detecting eccentricity in a video disc and in a video disc player
US4774699A (en) * 1981-12-21 1988-09-27 Discovision Associates Method and apparatus for positioning a read head to a selected track on a record disc
US4701898A (en) * 1981-12-21 1987-10-20 Discovision Associates Method and apparatus for locating a selected track on a record disc
JPS58125242A (ja) * 1982-01-22 1983-07-26 Victor Co Of Japan Ltd 光学的情報信号再生装置のトラツキング誤差検出方式
US4727433A (en) * 1982-01-25 1988-02-23 Discovision Associates Video/audio coded data recovery from a record medium
US4703368A (en) * 1982-01-25 1987-10-27 Discovision Associates Multiple variable rate audio message recording and playback
US4757393A (en) * 1982-01-25 1988-07-12 Discovision Associates Multiple variable rate audio message playback
US4638377A (en) * 1982-01-25 1987-01-20 Discovision Associates Selectable video/audio coded data recovery from a record medium
JPS58143472A (ja) * 1982-02-22 1983-08-26 Hitachi Ltd 記録情報再生装置のトラツキングサ−ボ制御装置
US4477890A (en) * 1982-03-01 1984-10-16 Discovision Associates Mapping disc defect detector
US4845697A (en) * 1982-04-15 1989-07-04 Discovision Associates Method of time limited searching for a track address on an optically read information disc
US4706133A (en) * 1982-04-15 1987-11-10 Discovision Associates Method and apparatus for recovering information from a videodisc
US4727532A (en) * 1982-04-15 1988-02-23 Discovision Associates Method and apparatus for recovering information from a videodisc
US4751692A (en) * 1982-04-15 1988-06-14 Discovision Associates Method and apparatus for recovering information from a videodisc
US4536863A (en) * 1982-04-15 1985-08-20 Discovision Associates Method and apparatus for recovering information from a videodisc
US4519004A (en) * 1982-06-01 1985-05-21 Discovision Associates Extended play videodisc
US4465977A (en) * 1982-06-04 1984-08-14 Discovision Associates Erroneous pulse sequence detector
US4499569A (en) * 1982-09-07 1985-02-12 Discovision Associates Writing beam focus monitor
JPS5956262A (ja) * 1982-09-27 1984-03-31 Toshiba Corp デイスク装置
US4516177A (en) * 1982-09-27 1985-05-07 Quantum Corporation Rotating rigid disk data storage device
US4514771A (en) * 1982-10-13 1985-04-30 Victor Technologies Inc. Method and apparatus for improving disk storage capacity
JPS59128519U (ja) * 1983-02-17 1984-08-29 株式会社東芝 位置検出装置
JPS59191144A (ja) 1983-04-14 1984-10-30 Sony Corp 光ピツクアツプのトラツキングサ−ボ回路
JPS6070923U (ja) 1983-10-19 1985-05-20 パイオニア株式会社 焦点誤差検出装置
US4590527A (en) * 1983-11-14 1986-05-20 Burroughs Corporation Positioning servomechanisms
US4607157A (en) * 1984-02-09 1986-08-19 Xerox Corporation Automatic focus offset correction system
JP2548106B2 (ja) * 1984-05-23 1996-10-30 ソニー株式会社 光学式デイスクプレ−ヤのトラツキング・サ−ボコントロ−ル装置
US4571712A (en) * 1984-07-06 1986-02-18 Storage Technology Partners Ii Beam alignment signal processing
JP2565485B2 (ja) * 1984-09-14 1996-12-18 オリンパス光学工業株式会社 光学的記録再生装置
JPS61129778A (ja) 1984-11-28 1986-06-17 Pioneer Electronic Corp デイスク再生方式
JP2786181B2 (ja) * 1985-12-21 1998-08-13 ソニー株式会社 光ディスク装置
JPS62192031A (ja) * 1986-02-19 1987-08-22 Olympus Optical Co Ltd 光学的記録再生装置
JPH052804Y2 (pt) * 1986-05-21 1993-01-25
US5124964A (en) 1986-08-12 1992-06-23 Kabushiki Kaisha Toshiba Focus servo gain setting circuit for optical record disc reproducing apparatus
JPH0734288B2 (ja) 1986-09-24 1995-04-12 株式会社日立製作所 デイスク回転駆動装置
JPS6437773A (en) 1987-08-01 1989-02-08 Sony Corp Track jump device of disk device
JP2696822B2 (ja) 1987-01-22 1998-01-14 ソニー株式会社 トラツキングサーボ装置
EP0277799B1 (en) * 1987-02-04 1993-10-13 Matsushita Electric Industrial Co., Ltd. Object positioning system
JPS63237269A (ja) * 1987-03-25 1988-10-03 Sony Corp トラツクカウント装置
US4779251A (en) * 1987-06-12 1988-10-18 Optimem Optical disk memory system with closed loop micro-jump between adjacent tracks
JPH0638292B2 (ja) 1987-06-23 1994-05-18 三菱電機株式会社 光学式情報記録再生装置
JPS6446270A (en) 1987-08-13 1989-02-20 Pioneer Electronic Corp Searching method in disk player
JPS6468814A (en) * 1987-09-10 1989-03-14 Canon Kk Method and device for position control of moving object
US5267226A (en) 1987-12-03 1993-11-30 Canon Kabushiki Kaisha Optical information recording and reproducing apparatus with switchable spot-functions
JPH01208777A (ja) 1988-02-03 1989-08-22 Internatl Business Mach Corp <Ibm> デイスク装置のサーボ・パターンの書込み方法
US4950890A (en) 1988-07-13 1990-08-21 Creo Electronics Corp. Method and apparatus for correcting position errors using writable encoders
US5396477A (en) 1988-09-21 1995-03-07 Hitachi, Ltd. Light spot positioning method and optical disc memory apparatus employing the same
US4980876A (en) 1988-10-03 1990-12-25 Maxoptix Corporation Single stage track seek method
NL8802435A (nl) 1988-10-05 1990-05-01 Philips Nv Inrichting voor het aftasten van een registratiedrager, alsmede een regelschakeling voor toepassing in een dergelijke inrichting.
WO1990006035A1 (en) 1988-11-17 1990-05-31 Matsushita Electric Industrial Co., Ltd. Picture receiver controller
JP2785195B2 (ja) 1989-01-11 1998-08-13 ソニー株式会社 ディスク装置の光学式エンコーダ
JP2706294B2 (ja) 1989-01-25 1998-01-28 キヤノン株式会社 光学的情報記録再生装置
JP2734054B2 (ja) 1989-02-03 1998-03-30 ソニー株式会社 光ディスク装置のトラッキングエラー検出装置及びトラッキングエラー検出方法
JP2615488B2 (ja) 1989-02-07 1997-05-28 松下電器産業株式会社 光学式記録再生装置のトラッキング制御装置
US5251194A (en) 1989-04-17 1993-10-05 Mitsubishi Denki Kabushiki Kaisha Techniques for controlling beam position and focus in optical disk drives
DE3916462A1 (de) 1989-05-20 1990-11-22 Thomson Brandt Gmbh Verfahren zum spurspringen
US5177725A (en) 1989-07-18 1993-01-05 Asahi Kogaku Kogyo K.K. Servo apparatus with an expanded pull-in range
US5270886A (en) 1989-08-07 1993-12-14 Antek Peripherals, Inc. Two motor servo system for a removable disk drive
JPH0766547B2 (ja) 1989-08-31 1995-07-19 富士通株式会社 光デイスク装置
JPH03100931A (ja) 1989-09-14 1991-04-25 Mitsubishi Electric Corp 光学式情報記録再生装置
JPH0756730B2 (ja) 1989-12-28 1995-06-14 パイオニア株式会社 スピンドルサーボ回路
JP2797579B2 (ja) 1989-12-28 1998-09-17 ソニー株式会社 目標トラック位置検索装置
US5319622A (en) 1990-02-09 1994-06-07 Ast Research, Inc. Control and information disk for disk recording system
US5138594A (en) 1990-04-20 1992-08-11 International Business Machines Corporation Reducing amplitude variations of optical disk readback signals and increasing reliability of track-crossing counts
US5257251A (en) 1990-05-25 1993-10-26 International Business Machines Corporation Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members
JP2870127B2 (ja) * 1990-05-31 1999-03-10 ソニー株式会社 トラッキング制御方法
JP2802310B2 (ja) 1990-06-15 1998-09-24 パイオニア株式会社 光学式ディスクの記録装置
JP2563648B2 (ja) * 1990-06-18 1996-12-11 松下電器産業株式会社 光学式記録再生装置
JP2793698B2 (ja) 1990-06-18 1998-09-03 株式会社リコー フオーカスオフセット補正方法
JPH0778890B2 (ja) 1990-10-03 1995-08-23 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン ディスク記憶装置
US5087975A (en) 1990-11-09 1992-02-11 Zenith Electronics Corporation VSB HDTV transmission system with reduced NTSC co-channel interference
CA2054880C (en) 1990-11-09 1997-07-08 Shigemi Maeda Information recording and reproducing device
US5124064A (en) 1990-12-19 1992-06-23 Allied-Signal Inc. Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkane having 5 or 6 carbon atoms
JPH04254919A (ja) 1991-02-07 1992-09-10 Hitachi Ltd トラッキング制御方法及び装置
US5168356A (en) 1991-02-27 1992-12-01 General Electric Company Apparatus for segmenting encoded video signal for transmission
US5189293A (en) 1991-06-27 1993-02-23 U.S. Philips Corporation Optical scanning apparatus including beam focal point position control when out of focus range
JPH0581685A (ja) 1991-09-24 1993-04-02 Sony Corp 光学式デイスク装置
US5210726A (en) 1992-02-07 1993-05-11 Maxoptix Corporation Track seek method utilizing an ideal signal
US5353247A (en) 1992-05-27 1994-10-04 Faris Sadeg M Optical mass storage system and memory cell incorporated therein
US5394385A (en) 1992-09-07 1995-02-28 Olympus Optical Co., Ltd. Optical information recording/reproducing apparatus for performing positioning of recording/reproducing spot by selection of pairs of photo detecting elements
US5294894A (en) 1992-10-02 1994-03-15 Compaq Computer Corporation Method of and apparatus for startup of a digital computer system clock
JPH06103533B2 (ja) 1992-10-21 1994-12-14 インターナショナル・ビジネス・マシーンズ・コーポレイション フォーカス引き込み方法および光ディスク駆動装置
US5315372A (en) 1993-01-04 1994-05-24 Excel Precision, Inc. Non-contact servo track writing apparatus having read/head arm and reference arm
US5304953A (en) 1993-06-01 1994-04-19 Motorola, Inc. Lock recovery circuit for a phase locked loop
US5568461A (en) 1994-04-20 1996-10-22 Matsushita Electric Industrial Co., Ltd. Optical information recording and reproducing apparatus
US5590102A (en) 1995-01-12 1996-12-31 Discovision Associates Recording informatioin on an optical disc without using pre-manufactured tracks
US5978329A (en) 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
CN1077715C (zh) 1995-12-06 2002-01-09 迪维安公司 聚焦控制的装置和方法
US5689485A (en) 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method

Also Published As

Publication number Publication date
ATE195606T1 (de) 2000-09-15
US5689485A (en) 1997-11-18
DE69713316T4 (de) 2003-08-07
NO316555B1 (no) 2004-02-02
AU722720B2 (en) 2000-08-10
US6314069B1 (en) 2001-11-06
DE69702799D1 (de) 2000-09-21
CN1099669C (zh) 2003-01-22
CN1173015A (zh) 1998-02-11
NO971114L (no) 1997-10-02
JP3239293B2 (ja) 2001-12-17
PT800166E (pt) 2000-12-29
EP0892975B1 (en) 2002-06-12
IL126392A0 (en) 1999-05-09
EP0892975A1 (en) 1999-01-27
CA2200286A1 (en) 1997-10-01
EP0800166A3 (en) 1997-11-26
CA2244961A1 (en) 1997-10-09
BR9701608A (pt) 1998-09-08
ATE219278T1 (de) 2002-06-15
SG47213A1 (en) 1998-03-20
ES2118687T1 (es) 1998-10-01
US6134199A (en) 2000-10-17
IL126392A (en) 2004-08-31
BR9708479B1 (pt) 2009-05-05
AU2543597A (en) 1997-10-22
KR100306541B1 (ko) 2001-11-30
MX9702229A (es) 1997-10-31
AU1648397A (en) 1997-12-18
DE69713316T2 (de) 2002-10-24
CA2200286C (en) 2000-05-16
JPH1049890A (ja) 1998-02-20
EP0800166B1 (en) 2000-08-16
EP0800166A2 (en) 1997-10-08
CA2244961C (en) 2003-01-07
DK0800166T3 (da) 2000-10-02
HK1003679A1 (en) 1998-11-06
DE69702799T2 (de) 2001-02-01
ES2118687T3 (es) 2000-10-16
AU688234B2 (en) 1998-03-05
JP2000509540A (ja) 2000-07-25
CN1213453A (zh) 1999-04-07
DE69713316D1 (de) 2002-07-18
NO971114D0 (no) 1997-03-11
MY119172A (en) 2005-04-30
WO1997037347A1 (en) 1997-10-09
CN1092380C (zh) 2002-10-09
KR970071547A (ko) 1997-11-07
JP4028599B2 (ja) 2007-12-26
ID16516A (id) 1997-10-09

Similar Documents

Publication Publication Date Title
BR9708479A (pt) Aparelho para controle de feixe focalizado de energia radiante e processo de focalizar um feixe de energia radiante
US5442480A (en) Lens/zone plate combination for chromatic dispersion correction
US5269288A (en) Method and apparatus for generating atmospheric solar energy concentrator
US4091274A (en) Active laser mirror system
JP4426292B2 (ja) 光ビーム位置合わせの検出および制御の方法および装置
US4249140A (en) Closed loop resonator feedback system
US4271355A (en) Method for mitigating 2πN ambiguity in an adaptive optics control system
JPH02307692A (ja) レーザー式加工装置におけるビーム案内装置
CA2447438A1 (en) Method and apparatus for improving laser hole resolution
JPS5460944A (en) Galvanomirror scanner
KR970048684A (ko) 빔 포커스 제어 장치 및 방법
RU2123229C1 (ru) Устройство передачи электрических сигналов мощности с переменными частотами и фазами от неподвижного блока к вращающемуся блоку
US4595810A (en) Device for focusing a laser on a recording medium by wavelength modulation
JPH06114577A (ja) 微細加工装置
US5161046A (en) Beam position control apparatus
JPS6360868B2 (pt)
KR970056978A (ko) 레이저 광을 이용한 카메라 촛점 조정장치
JPS6459638A (en) Optical spot controller
JPS5814648B2 (ja) 反射鏡の駆動方式
KR880700400A (ko) 광학기록체에 광선촛점 조정을 하기위한 처리방법과 회로배열
JPH01157787A (ja) レーザ孔開け装置
JPH03156779A (ja) データ担体の走査を制御するためにディジタル的に制御できる処理回路のパラメータを検出する方法及び装置
JPS5494054A (en) Light spot scanner
JPH106050A (ja) レーザー加工方法および装置
JPS6261020A (ja) 光ビ−ム露光装置

Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 02/06/2009, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 02.06.2019