HK5696A - Apparatus for the reproduction of data - Google Patents

Apparatus for the reproduction of data Download PDF

Info

Publication number
HK5696A
HK5696A HK5696A HK5696A HK5696A HK 5696 A HK5696 A HK 5696A HK 5696 A HK5696 A HK 5696A HK 5696 A HK5696 A HK 5696A HK 5696 A HK5696 A HK 5696A
Authority
HK
Hong Kong
Prior art keywords
output
input
focus
error signal
digital
Prior art date
Application number
HK5696A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kurz Arthur
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
Publication of HK5696A publication Critical patent/HK5696A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • H03F1/304—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device and using digital means
    • 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
    • G11B7/094—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
    • G11B7/0908—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 focusing only
    • G11B7/0909—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 focusing only by astigmatic methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Circuits Of Receivers In General (AREA)
  • Amplifiers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
HK5696A 1987-09-30 1996-01-11 Apparatus for the reproduction of data HK5696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873732997 DE3732997A1 (de) 1987-09-30 1987-09-30 Geraet zur wiedergabe von daten

Publications (1)

Publication Number Publication Date
HK5696A true HK5696A (en) 1996-01-19

Family

ID=6337266

Family Applications (1)

Application Number Title Priority Date Filing Date
HK5696A HK5696A (en) 1987-09-30 1996-01-11 Apparatus for the reproduction of data

Country Status (10)

Country Link
EP (1) EP0309719B1 (da)
JP (1) JP2956770B2 (da)
KR (1) KR960016359B1 (da)
AT (1) ATE78624T1 (da)
DE (2) DE3732997A1 (da)
DK (1) DK548288A (da)
ES (1) ES2034068T3 (da)
GR (1) GR3005801T3 (da)
HK (1) HK5696A (da)
HU (1) HUT63010A (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115918U (da) * 1990-02-28 1991-12-02
DE4102857A1 (de) * 1991-01-31 1992-08-06 Thomson Brandt Gmbh Verfahren zum fokussieren eines lichtstrahls
DE102006020830B4 (de) * 2006-05-04 2014-02-13 Siemens Aktiengesellschaft Regler für einen Hochfrequenzverstärker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598144A (ja) * 1982-07-05 1984-01-17 Trio Kenwood Corp 光学的情報読取装置
JPS61177646A (ja) * 1985-02-04 1986-08-09 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション 光学デイスク装置
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
DE3605561A1 (de) * 1986-02-21 1987-08-27 Thomson Brandt Gmbh Verfahren zur kompensation der offset-spannung eines regelverstaerkers und schaltungsanordnung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
JP2956770B2 (ja) 1999-10-04
JPH01109539A (ja) 1989-04-26
EP0309719A1 (de) 1989-04-05
DK548288D0 (da) 1988-09-30
DK548288A (da) 1989-03-31
EP0309719B1 (de) 1992-07-22
DE3873004D1 (de) 1992-08-27
ES2034068T3 (es) 1993-04-01
DE3732997A1 (de) 1989-04-13
GR3005801T3 (da) 1993-06-07
HUT63010A (en) 1993-06-28
ATE78624T1 (de) 1992-08-15
KR960016359B1 (en) 1996-12-09

Similar Documents

Publication Publication Date Title
US4587644A (en) Tracking servocontrol circuits for reducing gain to avoid tracking defect in an optical reproducing apparatus
US4669072A (en) Control apparatus for optical video disk recorder/player
US5297114A (en) Magneto-optic recording/reproduction apparatus for minimizing variation in focusing error signals caused by variation in optical source wavelength
US5109367A (en) Optical information recording and reproducing apparatus performing focus and/or track control by normalized error signals
KR0145299B1 (ko) 포커싱제어회로또는트래킹제어회로의오프셋전압을보상하기위한방법및회로
JPH06243496A (ja) ディスク再生装置及びそのフォーカスバランス自動調整方法及び信号処理装置
US4661942A (en) Control apparatus for information storage and retrieval system
EP0210275B1 (en) Recording/reproducing apparatus using magneto-optical disk
JP2000057616A (ja) 光ピックアップ、情報再生装置及び情報記録装置
EP0117715A1 (en) Optical disc players
JP2941289B2 (ja) データ再生装置
KR960013489B1 (ko) 데이타 재생장치
KR960013487B1 (ko) 데이타 재생장치
HK5696A (en) Apparatus for the reproduction of data
US6992953B2 (en) Tracking servo apparatus of optical information recording and reproducing apparatus
US5471446A (en) Optical disk player having beam correction means
US6084840A (en) Optical pickup for use with a recording medium
KR960013488B1 (ko) 데이타 재생장치
HK69397A (en) Optical scanning device
HK8296A (en) Optical scanning device
JP2592050Y2 (ja) 光ディスクプレーヤ
JPS6344326A (ja) 光学式情報記録再生装置
JPS61182638A (ja) 光学式記録再生装置のフオ−カスサ−ボ回路
JPS63152030A (ja) 光デイスクのトラツキング制御方法
JPH0660400A (ja) トラッキングエラー信号オフセット補正装置

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20080818