SG20587G - Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam - Google Patents

Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam

Info

Publication number
SG20587G
SG20587G SG205/87A SG20587A SG20587G SG 20587 G SG20587 G SG 20587G SG 205/87 A SG205/87 A SG 205/87A SG 20587 A SG20587 A SG 20587A SG 20587 G SG20587 G SG 20587G
Authority
SG
Singapore
Prior art keywords
accordance
objective
freedom
objective holder
frame
Prior art date
Application number
SG205/87A
Other languages
English (en)
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 SG20587G publication Critical patent/SG20587G/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • 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
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • 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
    • G11B7/0914—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 non-optical methods, e.g. capacitive
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0472—Active magnetic bearings for linear movement

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Holo Graphy (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Head (AREA)
  • Lens Barrels (AREA)
  • Automatic Focus Adjustment (AREA)
  • Magnetic Heads (AREA)
SG205/87A 1981-07-10 1987-02-26 Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam SG20587G (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8103305A NL8103305A (nl) 1981-07-10 1981-07-10 Opto-elektronische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen.

Publications (1)

Publication Number Publication Date
SG20587G true SG20587G (en) 1987-07-03

Family

ID=19837774

Family Applications (1)

Application Number Title Priority Date Filing Date
SG205/87A SG20587G (en) 1981-07-10 1987-02-26 Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam

Country Status (13)

Country Link
US (1) US4561081A (de)
EP (2) EP0186218B1 (de)
JP (1) JPH0680533B2 (de)
KR (1) KR880002696B1 (de)
AT (2) ATE23072T1 (de)
AU (1) AU8568982A (de)
CA (1) CA1188797A (de)
DD (1) DD206598A5 (de)
DE (2) DE3280200D1 (de)
ES (1) ES8305959A1 (de)
HK (2) HK39287A (de)
NL (1) NL8103305A (de)
SG (1) SG20587G (de)

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USRE32285E (en) * 1982-02-26 1986-11-11 Atasi Corporation Linear actuator for a memory storage apparatus
US4743987A (en) * 1982-02-26 1988-05-10 Atasi Corporation Linear actuator for a memory storage apparatus
US4414594A (en) * 1982-02-26 1983-11-08 Atasi Corporation Linear actuator for a memory storage apparatus
FR2522861B1 (fr) * 1982-03-02 1988-01-08 Thomson Csf Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete
DE3234288C2 (de) * 1982-09-16 1984-07-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Optische Vorrichtung zur Lenkung bzw. Ausrichtung eines Strahlenbündels
JPS59154677A (ja) * 1983-02-22 1984-09-03 Matsushita Electric Ind Co Ltd トラツキング制御装置
DE3324861C2 (de) * 1983-07-09 1986-02-13 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Lesevorrichtung zum optischen Abtasten von auf einem bewegten plattenförmigen Träger aufgezeichneten Informationen
AU575332B2 (en) * 1983-07-29 1988-07-28 Sony Corporation Optical disk pick-up
CA1249744A (en) * 1983-08-03 1989-02-07 Mitsuru Takashima Optical pickup having a driving unit
EP0135750B1 (de) * 1983-08-26 1988-06-22 Hitachi, Ltd. Aufzeichnungs- und Wiedergabegerät für optische Informationen
NL8303563A (nl) * 1983-10-17 1985-05-17 Philips Nv Inrichting voor het weergeven van digitale informatie via een overdrachtsmedium.
JPS6085446A (ja) * 1983-10-17 1985-05-14 Asahi Optical Co Ltd 光学的情報記録再生装置の対物レンズ駆動装置
JPS60239943A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学ヘツド
NL8403034A (nl) * 1984-10-05 1986-05-01 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
NL8501665A (nl) * 1985-06-10 1987-01-02 Philips Nv Optische aftasteenheid met positie- en standdetektiestelsel voor een elektromagnetisch gelagerd objektief.
EP0214677B1 (de) * 1985-08-14 1992-01-02 Philips Patentverwaltung GmbH Optische Abtasteinheit
DE3640660A1 (de) * 1985-11-28 1987-06-04 Toshiba Kk Vorrichtung zur bestimmung der stellung eines objektivs
JPS62132242A (ja) * 1985-12-04 1987-06-15 Hitachi Ltd 光デイスク装置
DE3543568A1 (de) * 1985-12-10 1987-06-11 Thomson Brandt Gmbh Verfahren fuer das spursuchen bei einem rotierenden plattenfoermigen informationstraeger und schaltungsanordnung zur durchfuehrung des verfahrens
JPH0750526B2 (ja) * 1986-03-15 1995-05-31 ソニー株式会社 デイスクプレ−ヤの光学ヘツド装置
US4763314A (en) * 1986-08-13 1988-08-09 Optimem Linear actuator for an optical disk storage apparatus
DE3730555A1 (de) * 1986-09-12 1988-03-24 Olympus Optical Co Optische informations-aufzeichnungs/wiedergabe-einrichtung
US4799210A (en) * 1986-11-05 1989-01-17 Unisys Corporation Fiber optic read/write head for an optical disk memory system
JP2635608B2 (ja) * 1987-08-29 1997-07-30 株式会社東芝 光学的情報記憶媒体検査装置
JPH01201831A (ja) * 1988-02-05 1989-08-14 Olympus Optical Co Ltd 光学的情報記録再生装置
FR2640828A1 (fr) * 1988-07-21 1990-06-22 Seiko Epson Corp Actionneur electromagnetique
US5090002A (en) * 1989-03-07 1992-02-18 International Business Machines Corporation Positioning systems employing velocity and position control loops with position control loop having an extended range
US6141300A (en) * 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US5070489A (en) * 1989-08-01 1991-12-03 Eastman Kodak Company Driving circuit for double solenoid focus actuator
DE4028703A1 (de) * 1990-09-10 1992-03-12 Thomson Brandt Gmbh Verfahren zum messen oder regeln des radial- und tangentialwinkels eines lichtstrahls
US5412640A (en) * 1990-09-10 1995-05-02 Deutsche Thomson-Brandt Gmbh Method for measuring and regulating the radial and tangential angles of a light beam
US5216562A (en) * 1990-09-25 1993-06-01 International Business Machines Corporation Multi-beam optical recording system and method
US5677899A (en) * 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US6069857A (en) * 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US5220222A (en) * 1991-12-23 1993-06-15 Eastman Kodak Company Magnetic bushings for an optical access actuator
JPH087315A (ja) * 1994-06-21 1996-01-12 Sony Corp 光学ピックアップ
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
US6091684A (en) * 1995-01-25 2000-07-18 Discovision Associates Optical disc system and method for changing the rotational rate of an information storage medium
US5740139A (en) * 1996-08-09 1998-04-14 Eastman Kodak Company Magnetically suspended optical recording actuator
NL1003890C2 (nl) * 1996-08-27 1998-03-03 Robi Omp Mastering Dev Gmbh Inrichting voor het door middel van een laserstraal optekenen van informatie op een schijfvormig substraat.
US6288383B1 (en) * 1999-10-25 2001-09-11 Rafael-Armament Development Authority Ltd. Laser spot locating device and system
JP2006262637A (ja) * 2005-03-17 2006-09-28 Toshiba Corp 静電アクチュエータ及びそれを用いた撮像装置
US8953154B2 (en) * 2012-07-26 2015-02-10 Vivonics, Inc. Orientation tracking system and method

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US3517360A (en) * 1966-07-14 1970-06-23 Bell Aerospace Corp Electromagnetic force motor having linear output characteristics
US3865442A (en) * 1970-12-22 1975-02-11 Nasa Magnetic bearing
US3663075A (en) * 1971-02-18 1972-05-16 Gen Dynamics Corp Self-centering permanent magnet bearing
US4183060A (en) * 1976-03-19 1980-01-08 Rca Corporation Capacitance distance sensor apparatus for video disc player/recorder
US4100576A (en) * 1976-04-28 1978-07-11 Zenith Radio Corporation Electromagnetic optical beam controller having an eddy current damper for arresting mechanical resonance
NL176315C (nl) * 1976-05-12 1985-03-18 Philips Nv Optische aftastinrichting.
JPS52139312A (en) * 1976-05-17 1977-11-21 Sony Corp Recording/reproducing device
JPS5922441B2 (ja) * 1977-02-18 1984-05-26 株式会社東芝 磁気浮上車の制御装置
JPS53108403A (en) * 1977-03-04 1978-09-21 Sony Corp Mirror supporting device for video disc
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JPS5680834A (en) * 1979-11-30 1981-07-02 Seiko Instr & Electronics Ltd Optical information reader
JPS56119944A (en) * 1980-02-27 1981-09-19 Sony Corp Disc player
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JPS57147143A (en) * 1981-03-07 1982-09-10 Olympus Optical Co Ltd Objective lens driving device

Also Published As

Publication number Publication date
EP0186218B1 (de) 1990-06-27
JPS5817552A (ja) 1983-02-01
ES513804A0 (es) 1983-04-16
ES8305959A1 (es) 1983-04-16
ATE23072T1 (de) 1986-11-15
EP0070070B1 (de) 1986-10-22
NL8103305A (nl) 1983-02-01
JPH0680533B2 (ja) 1994-10-12
KR840000864A (ko) 1984-02-27
DE3273918D1 (en) 1986-11-27
DE3280200D1 (de) 1990-08-02
EP0186218A2 (de) 1986-07-02
DD206598A5 (de) 1984-02-01
US4561081A (en) 1985-12-24
HK39287A (en) 1987-05-29
EP0070070A1 (de) 1983-01-19
HK49394A (en) 1994-05-27
AU8568982A (en) 1983-01-13
ATE54218T1 (de) 1990-07-15
CA1188797A (en) 1985-06-11
KR880002696B1 (ko) 1988-12-20
EP0186218A3 (en) 1986-10-29

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