ES2080938T3 - Un sistema de seguimiento en un dispositivo optico de registro/reproduccion. - Google Patents

Un sistema de seguimiento en un dispositivo optico de registro/reproduccion.

Info

Publication number
ES2080938T3
ES2080938T3 ES91901766T ES91901766T ES2080938T3 ES 2080938 T3 ES2080938 T3 ES 2080938T3 ES 91901766 T ES91901766 T ES 91901766T ES 91901766 T ES91901766 T ES 91901766T ES 2080938 T3 ES2080938 T3 ES 2080938T3
Authority
ES
Spain
Prior art keywords
tracking
recording medium
projected
light spot
optical recording
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
ES91901766T
Other languages
English (en)
Inventor
Yasuaki Morimoto
Seiji Dr Yonezawa
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
Hitachi Ltd
Original Assignee
Deutsche Thomson Brandt GmbH
Hitachi Ltd
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
Priority claimed from JP31332689A external-priority patent/JP2771286B2/ja
Priority claimed from JP31332789A external-priority patent/JP2771287B2/ja
Application filed by Deutsche Thomson Brandt GmbH, Hitachi Ltd filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of ES2080938T3 publication Critical patent/ES2080938T3/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
    • G11B7/0901—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
    • G11B7/0904—Dithered tracking systems

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Communication System (AREA)

Abstract

LA PRESENTE INVENCION ESTA RELACIONADA CON UN APARATO OPTICO DE GRABACION Y EL METODO CARACTERIZADO POR EL EMPLEO DE UN MEDIO DE GRABACION EN EL QUE SE FACILITAN PRE-SURCOS Y DEPRESIONES PARA GUIAR UN PUNTO DE LUZ Y PROYECTARLO A LO LARGO DE UNA PISTA, FORMANDO UN ACTUADOR DE ARRASTRE PARA QUE EL PUNTO DE LUZ QUE SE PROYECTE EN DICHO MEDIO DE GRABACION PUEDA CRUZAR LOS PRE-SURCOS, LAS PISTAS O DEPRESIONES OBLICUAMENTE, DETECTANDO UNA SEÑAL DE ARRASTRE CON COMPONENTES DE DESPLAZAMIENTO DE ALTA FRECUENCIA REDUCIDOS A TRAVES DE UNA OPERACION PREDETERMINADA DE SEÑALES DE SALIDA DE UN DETECTOR CUADRANTAL QUE RECIBE LA LUZ REFLEJADA BASADA EN EL PUNTO DE LUZ PROYECTADO EN DICHO MEDIO DE GRABACION, CORRIGIENDO LAS SEÑALES DE ARRASTRE EN BASE A UNA SEÑAL DE ERROR QUE SE OBTIENE DE LA LUZ REFLEJADA DE DICHO MEDIO DE GRABACION, Y GRABANDO O REPRODUCIENDO INFORMACION MIENTRAS SE ACCIONA DICHO ACTUADOR DE ARRASTRE PARA UN CONTROL DE ARRASTRE EN BASE A LA SEÑAL DE ARRASTRE CORREGIDA.
ES91901766T 1989-12-04 1990-12-04 Un sistema de seguimiento en un dispositivo optico de registro/reproduccion. Expired - Lifetime ES2080938T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP31332689A JP2771286B2 (ja) 1989-12-04 1989-12-04 光学的記録装置
JP31332789A JP2771287B2 (ja) 1989-12-04 1989-12-04 トラッキング方法および光ディスク装置

Publications (1)

Publication Number Publication Date
ES2080938T3 true ES2080938T3 (es) 1996-02-16

Family

ID=26567518

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91901766T Expired - Lifetime ES2080938T3 (es) 1989-12-04 1990-12-04 Un sistema de seguimiento en un dispositivo optico de registro/reproduccion.

Country Status (7)

Country Link
EP (1) EP0504300B1 (es)
AT (1) ATE126919T1 (es)
AU (1) AU7054091A (es)
DE (1) DE69021889T2 (es)
ES (1) ES2080938T3 (es)
HK (1) HK1000334A1 (es)
WO (1) WO1991008568A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05128594A (ja) * 1991-10-31 1993-05-25 Sony Corp 変位量測定方法
DE4323067A1 (de) * 1993-07-10 1995-01-12 Thomson Brandt Gmbh G-Faktor-Abgleich
JPH09147381A (ja) * 1995-11-22 1997-06-06 Pioneer Electron Corp 情報読み取り装置
JP3772379B2 (ja) * 1996-03-25 2006-05-10 ソニー株式会社 記録媒体、アドレス記録方法、および装置
KR100414792B1 (ko) * 1996-09-30 2004-04-03 주식회사 대우일렉트로닉스 광 디스크 플레이어의 트래킹 밸런스 제어 방법
JPH11238236A (ja) * 1998-02-20 1999-08-31 Fujitsu Ltd 光学記憶装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158611A (en) * 1984-05-07 1985-11-13 Rca Corp Servo error reduction apparatus for disc record playback system
US4748609A (en) * 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
US4866688A (en) * 1985-12-20 1989-09-12 Hitachi, Ltd. Composite tracking servo system for optical disc apparatus with track offset correction
JPS62190927U (es) * 1986-05-23 1987-12-04
JPH0626972Y2 (ja) * 1986-10-03 1994-07-20 パイオニア株式会社 光学式ピツクアツプ装置

Also Published As

Publication number Publication date
WO1991008568A1 (en) 1991-06-13
HK1000334A1 (en) 1998-02-27
DE69021889T2 (de) 1996-05-02
DE69021889D1 (de) 1995-09-28
ATE126919T1 (de) 1995-09-15
EP0504300B1 (en) 1995-08-23
AU7054091A (en) 1991-06-26
EP0504300A1 (en) 1992-09-23

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