CA1200601A - Optical track follower device with sampling - Google Patents

Optical track follower device with sampling

Info

Publication number
CA1200601A
CA1200601A CA000409137A CA409137A CA1200601A CA 1200601 A CA1200601 A CA 1200601A CA 000409137 A CA000409137 A CA 000409137A CA 409137 A CA409137 A CA 409137A CA 1200601 A CA1200601 A CA 1200601A
Authority
CA
Canada
Prior art keywords
signal
track
tracking device
data
track elements
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA000409137A
Other languages
English (en)
French (fr)
Inventor
Jean-Louis Gerard
Claude Bricot
Michel Audoin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
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 CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of CA1200601A publication Critical patent/CA1200601A/en
Expired legal-status Critical Current

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
    • 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
    • G11B7/0938—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

Landscapes

  • Optical Recording Or Reproduction (AREA)
CA000409137A 1981-08-14 1982-08-10 Optical track follower device with sampling Expired CA1200601A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115765A FR2511537B1 (fr) 1981-08-14 1981-08-14 Dispositif optique de suivi de piste a echantillonnage
FR8115765 1981-08-14

Publications (1)

Publication Number Publication Date
CA1200601A true CA1200601A (en) 1986-02-11

Family

ID=9261485

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000409137A Expired CA1200601A (en) 1981-08-14 1982-08-10 Optical track follower device with sampling

Country Status (7)

Country Link
US (1) US4535431A (en, 2012)
EP (1) EP0072723B1 (en, 2012)
JP (1) JPS5837850A (en, 2012)
CA (1) CA1200601A (en, 2012)
DE (1) DE3276455D1 (en, 2012)
FR (1) FR2511537B1 (en, 2012)
HK (1) HK23992A (en, 2012)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841447A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 光スポット制御信号検出方法
NL8204555A (nl) * 1981-11-25 1983-06-16 Hitachi Ltd Inrichting voor het registreren en weergeven van informatie.
NL8303564A (nl) * 1983-10-17 1985-05-17 Philips Nv Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager.
DE3406676A1 (de) * 1984-02-24 1985-09-05 Fa. Carl Zeiss, 7920 Heidenheim Einrichtung zur lagekorrektur eines ueber eine gelenkoptik gefuehrten laserstrahls
US4672192A (en) * 1985-07-10 1987-06-09 Eastman Kodak Company Laser light beam noise reducing apparatus
JP2526546B2 (ja) * 1986-04-21 1996-08-21 日本電気株式会社 位置合わせ装置
US4982392A (en) * 1987-07-10 1991-01-01 Ricoh Company, Ltd. Stabilized optical pick-up device inhibiting the effect of the focus error signal at the start and end of a data region
JP2681933B2 (ja) * 1987-07-24 1997-11-26 松下電器産業株式会社 記録再生装置
JPS6446237A (en) * 1987-08-12 1989-02-20 Canon Kk Optical information recording and reproducing device
JP2585281B2 (ja) * 1987-08-19 1997-02-26 株式会社日立製作所 光ディスク装置
US5043965A (en) * 1987-10-05 1991-08-27 Hitachi Maxell, Ltd. Optical apparatus for optical information recording medium
EP0320975B1 (en) * 1987-12-18 1994-11-30 Hitachi, Ltd. Information recording/reproducing method and apparatus
US5220543A (en) * 1989-02-14 1993-06-15 Victor Company Of Japan, Ltd. Compact optical disc recording/reproducing system
JPH0825305B2 (ja) 1989-04-17 1996-03-13 株式会社テック 端面発光型ｅｌ素子アレイの製作方法
FR2685518B1 (fr) * 1991-12-23 1994-02-04 Thomson Csf Circuit d'horloge pour systeme de lecture d'informations sequentielles.
EP0582446B1 (en) * 1992-07-31 2000-05-10 Matsushita Electric Industrial Co., Ltd. Optical data storage medium
CN1248202C (zh) * 2001-10-05 2006-03-29 松下电器产业株式会社 光盘刻录装置及光盘制造方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530321A (en) * 1964-05-21 1970-09-22 Skill Di Inc Electric motor with axially movable rotor
US3654624A (en) * 1969-03-17 1972-04-04 Precision Instr Co Laser recording system using drum mounted record strips
FR2174353A5 (en, 2012) * 1972-02-29 1973-10-12 Thomson Csf
US3944727A (en) * 1972-10-24 1976-03-16 Mca Discovision, Inc. Video disc player with movable mirror for directing light beam onto reflective disc
FR2260163B1 (en, 2012) * 1974-02-04 1979-08-03 Thomson Brandt
US3919697A (en) * 1974-06-26 1975-11-11 Battelle Development Corp Data record tracking using track identifying information in the gaps between recorded data groups
DE2522405C2 (de) * 1975-05-21 1982-04-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information
US4094013A (en) * 1975-05-22 1978-06-06 U.S. Philips Corporation Optical storage disk system with disk track guide sectors
US4198657A (en) * 1975-07-07 1980-04-15 Pioneer Electronic Corporation Optical disk reader with means for correcting errors due to eccentricity and time axis variations
JPS5329701A (en) * 1976-09-01 1978-03-20 Olympus Optical Co Ltd Forcussing and tracking system in optical information reading reproducer
FR2366636A1 (fr) * 1976-10-01 1978-04-28 Thomson Brandt Dispositif d'enregistrement optique d'information sur un support avec asservissement de la position de la tache d'enregistrement sur le support d'information
US4205338A (en) * 1977-11-03 1980-05-27 Laser File Inc. Disc recording tracking system
JPS54143109A (en) * 1978-04-28 1979-11-08 Hitachi Ltd Optical information device
JPS5532248A (en) * 1978-08-25 1980-03-06 Matsushita Electric Ind Co Ltd Optical recorder and reproducing device
US4232201A (en) * 1978-11-24 1980-11-04 Mca Discovision, Inc. Dithered center tracking system
JPS55163635A (en) * 1979-06-04 1980-12-19 Mitsubishi Electric Corp Optical tracking device
JPS5637A (en) * 1979-06-11 1981-01-06 Hitachi Ltd Tracking system of optical disc memory
FR2460523A1 (fr) * 1979-06-29 1981-01-23 Thomson Csf Tete de lecture optique a source laser a semi-conducteur et dispositif de lecture par reflexion d'un support d'information comportant une telle tete optique
FR2462758A1 (fr) * 1979-08-03 1981-02-13 Thomson Csf Dispositif optique d'acces a une piste portee par un support d'information et systeme de memoire optique comportant un tel dispositif
NL8000123A (nl) * 1980-01-09 1981-08-03 Philips Nv Inrichting voor het schrijven van digitale informatie in een schijfvormige optisch uitleesbare registratiedrager.
US4408314A (en) * 1980-02-29 1983-10-04 Tokyo Shibaura Denki Kabushiki Kaisha Record/playback track tracking servo
JPS5720928A (en) * 1980-07-09 1982-02-03 Toshiba Corp Optical disk reproduction system

Also Published As

Publication number Publication date
FR2511537A1 (fr) 1983-02-18
EP0072723A1 (fr) 1983-02-23
EP0072723B1 (fr) 1987-05-27
HK23992A (en) 1992-04-10
JPS5837850A (ja) 1983-03-05
DE3276455D1 (en) 1987-07-02
FR2511537B1 (fr) 1986-09-05
JPH059852B2 (en, 2012) 1993-02-08
US4535431A (en) 1985-08-13

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Legal Events

Date Code Title Description
MKEX Expiry