ES2061051T3 - Sistema de exploracion optica. - Google Patents

Sistema de exploracion optica.

Info

Publication number
ES2061051T3
ES2061051T3 ES90910647T ES90910647T ES2061051T3 ES 2061051 T3 ES2061051 T3 ES 2061051T3 ES 90910647 T ES90910647 T ES 90910647T ES 90910647 T ES90910647 T ES 90910647T ES 2061051 T3 ES2061051 T3 ES 2061051T3
Authority
ES
Spain
Prior art keywords
laser beam
track
data track
level laser
disc
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
ES90910647T
Other languages
English (en)
Inventor
Yasuaki Morimoto
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 ES2061051T3 publication Critical patent/ES2061051T3/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
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • 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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Vehicle Body Suspensions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Communication System (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Holo Graphy (AREA)

Abstract

LA INVENCION DESCRIBE UN DISPOSITIVO DE EXPLORACION OPTICA QUE FUNCIONA CON EL PRINCIPIO DE TRIPLE RAYO. EN UN DISCO OPTICO CONOCIDO LOS CARRILES DE DATOS SE DESPLAZAN CON OSCILACIONES IRREGULARES ALREDEDOR DE UNA PEQUEÑA FRECUENCIA. SIN EMBARGO ES MAS DIFICIL PARA EL RAYO DE LUZ EXPLORADOR EL ENCARRILAR LOS CARRILES DE DATOS OSCILANTES. PARA FACILITAR EL RASTREO POR EL RAYO PRINCIPAL (L1) QUE EXPLORE LOS DATOS EN UN DISCO OPTICO CON UN CARRIL DE DATOS CON OSCILACIONES IRREGULARES, LA DISTANCIA ENTRE EL RAYO DIFRACTADO DE NIVEL +1 (L2) Y EL RAYO DIFRACTADO DE NIVEL -1 (L3) EN EL DISCO ES ELEGIDO PARA SER UN MULTIPLO INTEGRAL DE LONGITUD DE ONDA T DEL CARRIL DESPLAZADO. LA INVENCION SE PUEDE APLICAR A DISPOSITIVOS REPRODUCTORES DE DISCOS OPTICOS CON UN CARRIL DE DATOS CON DESPLAZAMIENTO DE OSCILACIONES IRREGULARES.
ES90910647T 1989-07-14 1990-06-29 Sistema de exploracion optica. Expired - Lifetime ES2061051T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3923330A DE3923330A1 (de) 1989-07-14 1989-07-14 Optische abtastvorrichtung

Publications (1)

Publication Number Publication Date
ES2061051T3 true ES2061051T3 (es) 1994-12-01

Family

ID=6385049

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90910647T Expired - Lifetime ES2061051T3 (es) 1989-07-14 1990-06-29 Sistema de exploracion optica.

Country Status (14)

Country Link
US (1) US5247507A (es)
EP (1) EP0485404B1 (es)
JP (1) JP2877952B2 (es)
KR (1) KR920704280A (es)
CN (1) CN1019428B (es)
AT (1) ATE111627T1 (es)
AU (1) AU6040990A (es)
DD (1) DD296773A5 (es)
DE (2) DE3923330A1 (es)
ES (1) ES2061051T3 (es)
HK (1) HK68995A (es)
HU (1) HUT60560A (es)
MY (1) MY105973A (es)
WO (1) WO1991001551A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950010418B1 (ko) * 1991-08-28 1995-09-16 미쯔비시덴끼 가부시끼가이샤 광기록재생장치
US5659613A (en) * 1994-06-29 1997-08-19 Macrovision Corporation Method and apparatus for copy protection for various recording media using a video finger print
JPH08147699A (ja) * 1994-11-22 1996-06-07 Sony Corp 情報記録再生装置
US5835478A (en) * 1995-06-15 1998-11-10 Sony Corporation Optical disc having address information for recording and reproducing data at correct positions
KR970008064A (ko) * 1995-07-25 1997-02-24 김광호 컴팩트 디스크 플레이어의 흠집부분 재생방지방법
US6052358A (en) * 1996-10-04 2000-04-18 Sony Corporation Head feeding mechanism and optical pick-up feeding mechanism
US5757756A (en) * 1996-10-15 1998-05-26 Eastman Kodak Company Reducing mark length variations in recording data in wobbled groove storage media
JP3224513B2 (ja) * 1996-11-27 2001-10-29 シャープ株式会社 光ディスクの再生方法
US6355290B1 (en) * 1998-07-17 2002-03-12 Creative Edge Design Group, Ltd. Ice cream manufacturing and packaging process and a package for this process

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583297B2 (ja) * 1978-06-09 1983-01-20 株式会社日立製作所 情報記録再生方法，その装置およびその記録媒体
NL8000121A (nl) * 1980-01-09 1981-08-03 Philips Nv Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager.
JPS59177735A (ja) * 1983-03-25 1984-10-08 Canon Inc 光情報記録再生装置

Also Published As

Publication number Publication date
HUT60560A (en) 1992-09-28
EP0485404A1 (de) 1992-05-20
WO1991001551A1 (de) 1991-02-07
JP2877952B2 (ja) 1999-04-05
CN1019428B (zh) 1992-12-09
KR920704280A (ko) 1992-12-19
AU6040990A (en) 1991-02-22
ATE111627T1 (de) 1994-09-15
JPH04507029A (ja) 1992-12-03
EP0485404B1 (de) 1994-09-14
DE3923330A1 (de) 1991-01-24
HK68995A (en) 1995-05-12
DE59007160D1 (de) 1994-10-20
CN1048764A (zh) 1991-01-23
US5247507A (en) 1993-09-21
MY105973A (en) 1995-02-28
DD296773A5 (de) 1991-12-12
HU9200019D0 (en) 1992-04-28

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