IT1153662B - Apparato di esplorazione ottica di un supporto di registrazione in forma di disco - Google Patents

Apparato di esplorazione ottica di un supporto di registrazione in forma di disco

Info

Publication number
IT1153662B
IT1153662B IT24388/82A IT2438882A IT1153662B IT 1153662 B IT1153662 B IT 1153662B IT 24388/82 A IT24388/82 A IT 24388/82A IT 2438882 A IT2438882 A IT 2438882A IT 1153662 B IT1153662 B IT 1153662B
Authority
IT
Italy
Prior art keywords
disk recording
recording support
exploration apparatus
optical exploration
optical
Prior art date
Application number
IT24388/82A
Other languages
English (en)
Other versions
IT8224388A1 (it
IT8224388A0 (it
Inventor
Martinus Petrus Maria Bierhoff
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of IT8224388A0 publication Critical patent/IT8224388A0/it
Publication of IT8224388A1 publication Critical patent/IT8224388A1/it
Application granted granted Critical
Publication of IT1153662B publication Critical patent/IT1153662B/it

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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
IT24388/82A 1981-11-26 1982-11-23 Apparato di esplorazione ottica di un supporto di registrazione in forma di disco IT1153662B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8105346A NL8105346A (it) 1981-11-26 1981-11-26

Publications (3)

Publication Number Publication Date
IT8224388A0 IT8224388A0 (it) 1982-11-23
IT8224388A1 IT8224388A1 (it) 1984-05-23
IT1153662B true IT1153662B (it) 1987-01-14

Family

ID=19838450

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24388/82A IT1153662B (it) 1981-11-26 1982-11-23 Apparato di esplorazione ottica di un supporto di registrazione in forma di disco

Country Status (13)

Country Link
US (1) US4482989A (it)
JP (1) JPS58105438A (it)
KR (1) KR880002695B1 (it)
AU (1) AU552688B2 (it)
BE (1) BE895139A (it)
CA (1) CA1193723A (it)
DE (1) DE3242784A1 (it)
DK (1) DK521982A (it)
ES (1) ES517632A0 (it)
FR (1) FR2517153B1 (it)
GB (1) GB2110433B (it)
IT (1) IT1153662B (it)
NL (1) NL8105346A (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170039A (ja) * 1984-02-14 1985-09-03 Sanyo Electric Co Ltd トラツキングサ−ボ装置
JP2565485B2 (ja) * 1984-09-14 1996-12-18 オリンパス光学工業株式会社 光学的記録再生装置
NL8501634A (nl) * 1984-09-14 1986-04-01 Philips Nv Kamera voor televisie-, foto- respektievelijk filmopname uitgevoerd met een automatische fokusinstelinrichting.
DE3500671A1 (de) * 1985-01-11 1986-07-17 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Lesevorrichtung zum optischen abtasten von auf einem beweglichen plattenfoermigen traeger aufgezeichneten informationen
JPH064414Y2 (ja) * 1986-03-10 1994-02-02 パイオニア株式会社 トラツキング制御装置
JPS6374126A (ja) * 1986-09-17 1988-04-04 Pioneer Electronic Corp フオ−カスサ−ボ装置
JPS6489034A (en) * 1987-09-30 1989-04-03 Matsushita Electric Ind Co Ltd Optical disk drive controller
JP2911449B2 (ja) * 1987-10-29 1999-06-23 パイオニア株式会社 光学式情報読取装置
US5396477A (en) * 1988-09-21 1995-03-07 Hitachi, Ltd. Light spot positioning method and optical disc memory apparatus employing the same
US5233586A (en) * 1990-02-16 1993-08-03 Canon Kabushiki Kaisha Servo control system for controlling tracking of an optical head on an optical disk
US5436880A (en) * 1994-01-10 1995-07-25 Eastman Kodak Company Laser power control in an optical recording system using partial correction of reflected signal error
EP0777218B1 (en) * 1995-12-06 2001-05-16 Discovision Associates Apparatus and method for focus control
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
WO1999031956A2 (en) * 1997-12-19 1999-07-01 Lsi Logic Corporation Automated servo gain adjustment using fourier transform
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
EP1751755A1 (en) * 2004-05-12 2007-02-14 Koninklijke Philips Electronics N.V. Improved servo system, record carrier and playback device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536538A (en) * 1939-11-24 1941-05-19 Radio Transmission Equipment L Improvements in thermionic amplifiers
DK72866C (da) * 1943-03-19 1951-08-06 Philips Nv Forstærkerkobling til tilvejebringelse af konstant forstærkning.
US2974224A (en) * 1956-08-28 1961-03-07 Gilfillan Bros Inc Apparatus for automatic gain control
NL7315419A (nl) * 1973-11-10 1975-05-13 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.
US3932700A (en) * 1974-02-04 1976-01-13 Zenith Radio Corporation Focus tracking registration for optical reproducing systems
AR205839A1 (es) * 1974-09-30 1976-06-07 Mca Disco Vision Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video
NL182258C (nl) * 1976-01-28 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestructuur.
JPS6032264B2 (ja) * 1977-03-08 1985-07-26 松下電器産業株式会社 光学的再生装置
JPS5827889B2 (ja) * 1977-05-31 1983-06-13 日本ビクター株式会社 サ−ボ回路のル−プ利得調整回路
DE2724917A1 (de) * 1977-06-02 1978-12-14 Bosch Gmbh Robert Einrichtung und schaltungsanordnung zur spurabtastung einer videoplatte
JPS5424605A (en) * 1977-07-26 1979-02-24 Mitsubishi Electric Corp Optical type video disc apparatus
US4337534A (en) * 1979-04-18 1982-06-29 Discovision Associates Solid state electro-optical track follower array
JPS6048809B2 (ja) * 1979-10-16 1985-10-29 パイオニアビデオ株式会社 情報読取装置におけるトラッキングサ−ボ引込装置
NL8105347A (nl) * 1981-11-26 1983-06-16 Philips Nv Inrichting voor het optisch aftasten van een schijfvormige registratiedrager.

Also Published As

Publication number Publication date
IT8224388A1 (it) 1984-05-23
BE895139A (fr) 1983-05-25
KR840002794A (ko) 1984-07-16
FR2517153B1 (fr) 1987-11-13
JPS58105438A (ja) 1983-06-23
IT8224388A0 (it) 1982-11-23
DE3242784C2 (it) 1991-06-20
AU552688B2 (en) 1986-06-12
US4482989A (en) 1984-11-13
KR880002695B1 (ko) 1988-12-20
ES8400641A1 (es) 1983-10-16
NL8105346A (it) 1983-06-16
ES517632A0 (es) 1983-10-16
JPH0430093B2 (it) 1992-05-20
DE3242784A1 (de) 1983-06-01
AU9080082A (en) 1983-06-02
GB2110433A (en) 1983-06-15
DK521982A (da) 1983-05-27
GB2110433B (en) 1985-09-04
CA1193723A (en) 1985-09-17
FR2517153A1 (fr) 1983-05-27

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971128