HK68995A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
HK68995A
HK68995A HK68995A HK68995A HK68995A HK 68995 A HK68995 A HK 68995A HK 68995 A HK68995 A HK 68995A HK 68995 A HK68995 A HK 68995A HK 68995 A HK68995 A HK 68995A
Authority
HK
Hong Kong
Prior art keywords
laser beam
track
data track
level laser
optical scanning
Prior art date
Application number
HK68995A
Other languages
English (en)
Inventor
Yasuaki Morimoto
Friedheim Zucker
Christian Buechler
Original Assignee
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 Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK68995A publication Critical patent/HK68995A/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
    • G11B7/08—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)
  • Optical Communication System (AREA)
  • Vehicle Body Suspensions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Holo Graphy (AREA)
HK68995A 1989-07-14 1995-05-04 Optical scanning device HK68995A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923330A DE3923330A1 (de) 1989-07-14 1989-07-14 Optische abtastvorrichtung
PCT/EP1990/001039 WO1991001551A1 (de) 1989-07-14 1990-06-29 Optische abtastvorrichtung

Publications (1)

Publication Number Publication Date
HK68995A true HK68995A (en) 1995-05-12

Family

ID=6385049

Family Applications (1)

Application Number Title Priority Date Filing Date
HK68995A HK68995A (en) 1989-07-14 1995-05-04 Optical scanning device

Country Status (14)

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

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
AU6040990A (en) 1991-02-22
DE59007160D1 (de) 1994-10-20
JP2877952B2 (ja) 1999-04-05
JPH04507029A (ja) 1992-12-03
KR920704280A (ko) 1992-12-19
MY105973A (en) 1995-02-28
HU9200019D0 (en) 1992-04-28
CN1048764A (zh) 1991-01-23
CN1019428B (zh) 1992-12-09
DE3923330A1 (de) 1991-01-24
ATE111627T1 (de) 1994-09-15
US5247507A (en) 1993-09-21
EP0485404B1 (de) 1994-09-14
WO1991001551A1 (de) 1991-02-07
EP0485404A1 (de) 1992-05-20
ES2061051T3 (es) 1994-12-01
HUT60560A (en) 1992-09-28
DD296773A5 (de) 1991-12-12

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20100628