HK33396A - Track control system for positioning a light beam - Google Patents

Track control system for positioning a light beam

Info

Publication number
HK33396A
HK33396A HK33396A HK33396A HK33396A HK 33396 A HK33396 A HK 33396A HK 33396 A HK33396 A HK 33396A HK 33396 A HK33396 A HK 33396A HK 33396 A HK33396 A HK 33396A
Authority
HK
Hong Kong
Prior art keywords
disc
light beam
photodetector
control system
track control
Prior art date
Application number
HK33396A
Other languages
English (en)
Inventor
Friedrich Fueldner
Arthur Kurz
Dieter Baas
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 HK33396A publication Critical patent/HK33396A/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
    • G11B7/094—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
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Control Of Position Or Direction (AREA)
HK33396A 1986-12-15 1996-02-29 Track control system for positioning a light beam HK33396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863642763 DE3642763A1 (de) 1986-12-15 1986-12-15 Spurregelkreis zum fuehren eines lichtstrahls

Publications (1)

Publication Number Publication Date
HK33396A true HK33396A (en) 1996-03-08

Family

ID=6316205

Family Applications (1)

Application Number Title Priority Date Filing Date
HK33396A HK33396A (en) 1986-12-15 1996-02-29 Track control system for positioning a light beam

Country Status (8)

Country Link
EP (1) EP0274031B1 (xx)
JP (1) JP2602859B2 (xx)
KR (1) KR910002752B1 (xx)
AT (1) ATE70653T1 (xx)
DE (2) DE3642763A1 (xx)
DK (1) DK658987A (xx)
ES (1) ES2028851T3 (xx)
HK (1) HK33396A (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0675291B2 (ja) * 1988-06-23 1994-09-21 シャープ株式会社 光記録再生装置のフィードバック制御装置
JP2698635B2 (ja) * 1988-12-20 1998-01-19 富士通株式会社 光ディスク装置及びそのトラックサーボオフセット補正方法
US5016992A (en) * 1989-03-16 1991-05-21 Forschungszentrum Julich Gmbh Method of and apparatus for the reading of magnetically stored information
DE4017487A1 (de) * 1990-05-31 1991-12-05 Thomson Brandt Gmbh Servoregelkreis
DE4323067A1 (de) * 1993-07-10 1995-01-12 Thomson Brandt Gmbh G-Faktor-Abgleich

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5873023A (ja) * 1981-10-27 1983-05-02 Pioneer Electronic Corp 情報読取装置におけるトラツキングサ−ボ信号発生装置
JPS5919250A (ja) * 1982-07-21 1984-01-31 Hitachi Ltd 情報の記録再生装置
JPS609020U (ja) * 1983-06-29 1985-01-22 パイオニア株式会社 光デイスクにおけるトラツキング装置

Also Published As

Publication number Publication date
ES2028851T3 (es) 1992-07-16
EP0274031B1 (de) 1991-12-18
DK658987D0 (da) 1987-12-15
JPS63173237A (ja) 1988-07-16
KR880008256A (ko) 1988-08-30
DE3642763A1 (de) 1988-06-23
ATE70653T1 (de) 1992-01-15
DE3775373D1 (de) 1992-01-30
DK658987A (da) 1988-06-16
EP0274031A1 (de) 1988-07-13
JP2602859B2 (ja) 1997-04-23
KR910002752B1 (ko) 1991-05-04

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20071118