ES2115965T3 - Compensacion del factor g. - Google Patents

Compensacion del factor g.

Info

Publication number
ES2115965T3
ES2115965T3 ES94924218T ES94924218T ES2115965T3 ES 2115965 T3 ES2115965 T3 ES 2115965T3 ES 94924218 T ES94924218 T ES 94924218T ES 94924218 T ES94924218 T ES 94924218T ES 2115965 T3 ES2115965 T3 ES 2115965T3
Authority
ES
Spain
Prior art keywords
factor
signal
push
track
pull
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES94924218T
Other languages
English (en)
Inventor
Friedhelm Zucker
Christian Buchler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of ES2115965T3 publication Critical patent/ES2115965T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B7/09—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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • 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

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

LA INVENCION SE REFIERE A PROCESO Y DISPOSICIONES PARA ALINEAMIENTO DE FACTOR G O AJUSTE DE UNA SEÑAL DE CONTROL O DE UNA SEÑAL DE ERROR DE PISTA, CUANDO EL RAYO DE EXPLORACION CAMBIA DE DIRECCION A PARTIR DE LA PISTA DE TRANSFORMACION DE UN SUBSTRATO DE GRABACION EN CIRCUITO DE CONTROL PARA GUIA DE PISTA DE DISPOSITIVOS DE EXPLORACION OPTICA, QUE HACE USO DE LOS PROCESOS PUSH-PULL DE TIPO PREVIO CONOCIDO O PUSH-PULL DIFERENCIAL, POR EJEMPLO PARA LA GUIA DE PISTA DE DISPOSITIVO DE EXPLORACION. ES EL OBJETIVO DE LA INVENCION SUMINISTRAR UN PROCEDIMIENTO Y UNA DISPOSICION POR MEDIO DE LOS CUALES SE REDUCE EL ESFUERZO NECESARIO PARA AJUSTAR UN FACTOR G OPTIMO MIENTRAS SIN EMBARGO, TENIENDO EN CUENTA LOS INSTRUMENTOS Y LOS EFECTOS ESFERICOS DEL SUBSTRATO DE GRABACION, SE AJUSTA EL FACTOR G DE FORMA OPTIMA. DE ACUERDO CON LA INVENCION, LAS DESVIACIONES A PARTIR DEL AJUSTE DE FACTOR G OPTIMO SON DETECTADA AUTOMATICAMENTE CON UN CIRCUITO DE AJUSTE DE PISTA ABIERTO MEDIANTE GIRO DEL SERVODISPOSITIVO PARA DEFLEXION DE ACTUADOR A PARTIR DE SU POSICION O DE LA POSICION DE DESCANSO O NEUTRA Y ASESORANDO LA SEÑAL PUSH-PULL Y AUTOMATICAMENTE EL AJUSTE DEL FACTOR G PARA LLEGAR A SU NIVEL OPTIMO. PARA ESTE OBJETIVO, SE MIDE UNA SEÑAL MEDIA PUSH-PULL DURANTE LA DEFLEXION Y SE AJUSTA EL FACTOR G EN UN PROCESO ITERATIVO CON UN MICROPROCESADOR HASTA QUE EL VALOR MEDIO DE LA SEÑAL PUSH-PULL CORRESPONDE PARA UNA DEFLEXION DIFERENTE DEL ACTUADOR EN UNA VIA (W), O EL ACTUADOR ES DEFLECTADO A PARTIR DE SU POSICION NEUTRA MEDIANTE GIRO DE SERVO DISPOSITIVO CON UNA SEÑAL DE OSCILADOR PREDETERMINADA Y EL FACTOR G ES ENCONTRADO ES CON UNA SEÑAL FORMADA POR MEDIO DE DETECTOR SINCRONO A PARTIR DE UNA SEÑAL PUSH-PULL DURANTE LA DEFLEXION Y EL AJUSTE PARA LA OBTENCION DEL VALOR OPTIMO. LA INVENCION ES PARTICULARMENTE APLICABLE AL AJUSTE AUTOMATICO DEL FACTOR G PARA GUIA DE PISTA DE DISPOSITIVOS DE EXPLORACION OPTICOS.
ES94924218T 1993-07-10 1994-06-30 Compensacion del factor g. Expired - Lifetime ES2115965T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4323067A DE4323067A1 (de) 1993-07-10 1993-07-10 G-Faktor-Abgleich

Publications (1)

Publication Number Publication Date
ES2115965T3 true ES2115965T3 (es) 1998-07-01

Family

ID=6492449

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94924218T Expired - Lifetime ES2115965T3 (es) 1993-07-10 1994-06-30 Compensacion del factor g.

Country Status (8)

Country Link
US (1) US5764605A (es)
EP (1) EP0708961B1 (es)
JP (1) JPH09501255A (es)
KR (1) KR100310072B1 (es)
CN (1) CN1050211C (es)
DE (2) DE4323067A1 (es)
ES (1) ES2115965T3 (es)
WO (1) WO1995002244A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630887A1 (de) * 1996-07-31 1998-02-05 Thomson Brandt Gmbh Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger
EP0905694A1 (en) * 1997-09-29 1999-03-31 Deutsche Thomson-Brandt Gmbh Tracking device with a coil driven actuator and a sensor coil to determine a position of the actuator
JP3882303B2 (ja) * 1997-12-26 2007-02-14 ソニー株式会社 光ディスクの記録及び／又は再生装置並びに光ディスクのトラッキング制御方法
TW473707B (en) * 1998-01-21 2002-01-21 Mediatek Inc Apparatus and method for automatically adjusting serving loop system gain of CD-ROM driver
JP2001308417A (ja) * 2000-04-18 2001-11-02 Ando Electric Co Ltd 光増幅器評価方法および光増幅器評価装置
DE10062078A1 (de) * 2000-12-13 2002-06-20 Thomson Brandt Gmbh Verfahren zum Erzeugen eines Linsenpositionssignals sowie entsprechendes Gerät zum Lesen und/oder Beschreiben eines optischen Aufzeichnungsträgers
KR100464441B1 (ko) * 2002-12-28 2005-01-03 삼성전자주식회사 신호 검출 방법 및 장치 및 이를 적용한 광기록 및/또는재생기기
CN100576325C (zh) * 2003-05-16 2009-12-30 汤姆森特许公司 为生成透镜位置信号进行增益调节的方法及读和/或写光记录介质的对应设备
JP4496536B2 (ja) * 2005-03-23 2010-07-07 日本ビクター株式会社 光記録媒体の記録再生装置
TW200735075A (en) * 2005-06-29 2007-09-16 Koninkl Philips Electronics Nv Single spot cross-correlation tracking
CN104900245A (zh) * 2014-03-06 2015-09-09 宏阳科技股份有限公司 伺服信号校正方法,及其光盘驱动器

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS6030015B2 (ja) * 1979-05-09 1985-07-13 株式会社日立製作所 光ビ−ム位置制御装置
JPS5720928A (en) * 1980-07-09 1982-02-03 Toshiba Corp Optical disk reproduction system
JPH064414Y2 (ja) * 1986-03-10 1994-02-02 パイオニア株式会社 トラツキング制御装置
DE3635859A1 (de) * 1986-10-22 1988-05-05 Thomson Brandt Gmbh Verfahren und schaltungsanordnung zur automatischen einstellung der regelverstaerkung in einem regelkreis
DE3642763A1 (de) * 1986-12-15 1988-06-23 Thomson Brandt Gmbh Spurregelkreis zum fuehren eines lichtstrahls
DE3824039A1 (de) * 1988-07-15 1990-01-18 Thomson Brandt Gmbh Verfahren und schaltungsanordnung zur kompensation von offset-spannungen in einem fokus- und/oder spurregelkreis
JPH0782721B2 (ja) * 1988-10-05 1995-09-06 パイオニア株式会社 ディスクプレーヤのサーボ装置
JP2774295B2 (ja) * 1989-01-12 1998-07-09 キヤノン株式会社 光学的情報記録再生装置
HU208587B (en) * 1989-01-20 1993-11-29 Thomson Brandt Gmbh Method for tracking an optical scanner on the track of a data carrier and optical scanner performing said method
JPH02220237A (ja) * 1989-02-21 1990-09-03 Pioneer Electron Corp トラッキングサーボ装置におけるエラー信号増幅器のゲイン制御方式
JP2742443B2 (ja) * 1989-04-27 1998-04-22 オリンパス光学工業株式会社 トラッキングサーボループのループゲイン調整装置
JPH03100931A (ja) * 1989-09-14 1991-04-25 Mitsubishi Electric Corp 光学式情報記録再生装置
DE3936033A1 (de) * 1989-10-28 1991-05-02 Thomson Brandt Gmbh Spurregelkreis
AU7054091A (en) * 1989-12-04 1991-06-26 Deutsche Thomson-Brandt Gmbh A tracking system in an optical recording/reproducing device
JPH03263620A (ja) * 1990-03-13 1991-11-25 Pioneer Electron Corp ディスクプレーヤのサーボ装置
US5293365A (en) * 1990-05-30 1994-03-08 Olympus Optical Co., Ltd. Track control circuit for optical card recording/reproducing apparatus
US5220546A (en) * 1990-09-28 1993-06-15 International Business Machines Corporation Operating optical disk drives including calibrating a tracking error signal

Also Published As

Publication number Publication date
CN1050211C (zh) 2000-03-08
EP0708961B1 (de) 1998-03-04
KR100310072B1 (ko) 2001-12-28
EP0708961A1 (de) 1996-05-01
CN1128079A (zh) 1996-07-31
KR960704311A (ko) 1996-08-31
DE59405402D1 (de) 1998-04-09
WO1995002244A1 (de) 1995-01-19
US5764605A (en) 1998-06-09
JPH09501255A (ja) 1997-02-04
DE4323067A1 (de) 1995-01-12

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