SG76884G - Tracking apparatus for an optically readable record - Google Patents

Tracking apparatus for an optically readable record

Info

Publication number
SG76884G
SG76884G SG768/84A SG76884A SG76884G SG 76884 G SG76884 G SG 76884G SG 768/84 A SG768/84 A SG 768/84A SG 76884 A SG76884 A SG 76884A SG 76884 G SG76884 G SG 76884G
Authority
SG
Singapore
Prior art keywords
optically readable
tracking apparatus
readable record
record
tracking
Prior art date
Application number
SG768/84A
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 SG76884G publication Critical patent/SG76884G/en

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
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
    • 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
    • G11B7/0904—Dithered tracking systems
SG768/84A 1980-10-13 1984-10-31 Tracking apparatus for an optically readable record SG76884G (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8005633A NL8005633A (nl) 1980-10-13 1980-10-13 Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestruktuur.

Publications (1)

Publication Number Publication Date
SG76884G true SG76884G (en) 1985-04-26

Family

ID=19836008

Family Applications (1)

Application Number Title Priority Date Filing Date
SG768/84A SG76884G (en) 1980-10-13 1984-10-31 Tracking apparatus for an optically readable record

Country Status (17)

Country Link
US (1) US4423496A (nl)
JP (1) JPS5794942A (nl)
KR (1) KR900000496B1 (nl)
AT (1) AT371624B (nl)
AU (1) AU7618181A (nl)
BE (1) BE890702A (nl)
CA (1) CA1182912A (nl)
DD (1) DD213543A5 (nl)
DE (1) DE3140349A1 (nl)
ES (1) ES8207369A1 (nl)
FR (1) FR2492144A1 (nl)
GB (1) GB2086092B (nl)
HK (1) HK98984A (nl)
IT (1) IT1138945B (nl)
NL (1) NL8005633A (nl)
SE (1) SE452074B (nl)
SG (1) SG76884G (nl)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497378B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif compensateur de desequilibre d'un miroir de renvoi appartenant a un systeme optique d'eclairement d'un support d'information
CA1190321A (en) * 1981-10-29 1985-07-09 Toshihisa Deguchi Magneto-optical head assembly
US4556964A (en) * 1981-12-21 1985-12-03 Burroughs Corporation Technique for monitoring galvo angle
US4466088A (en) * 1981-12-21 1984-08-14 Burroughs Corporation Galvo position sensor for track selection in optical data disk system
FR2523351B1 (fr) * 1982-03-09 1989-07-13 Thomson Csf Tete optique dans un dispositif d'enregistrement-lecture d'un support d'information
JPS58159248A (ja) * 1982-03-17 1983-09-21 Fujitsu Ltd 光デイスク装置のトラツキングサ−ボ方式
JPS5928255A (ja) * 1982-08-05 1984-02-14 Aiwa Co Ltd 光学式情報再生装置
US4564757A (en) * 1982-09-30 1986-01-14 Burroughs Corporation Mirror position sensor for improved track selection in optical data disk system
JPS5971141A (ja) * 1982-10-14 1984-04-21 Mitsubishi Electric Corp 光学的信号読出し装置
JPS59154677A (ja) * 1983-02-22 1984-09-03 Matsushita Electric Ind Co Ltd トラツキング制御装置
JPS60242524A (ja) * 1984-05-16 1985-12-02 Nippon Columbia Co Ltd 光ピツクアツプ
JPS60263345A (ja) * 1984-06-12 1985-12-26 Yokogawa Hokushin Electric Corp 光メモリ装置
CA1255385A (en) * 1985-01-31 1989-06-06 Shigeru Arai Track servo system for controllably projecting an optical beam to an optical disk
DE3678311D1 (de) * 1985-02-15 1991-05-02 Hitachi Ltd Optisches plattengeraet.
JPS61196433A (ja) * 1985-02-25 1986-08-30 Fujitsu Ltd トラツキング用アクチユエ−タ
US4712887A (en) * 1985-12-20 1987-12-15 Dazar Corporation Optical system for fast access optical data storage device
JPS62231435A (ja) * 1986-03-31 1987-10-12 Asahi Optical Co Ltd 光デイスク用対物レンズ駆動装置
NL8800133A (nl) 1988-01-21 1989-08-16 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPH0268735A (ja) * 1988-09-05 1990-03-08 Nippon Telegr & Teleph Corp <Ntt> 検出装置
JPH02110022U (nl) * 1989-02-21 1990-09-03
JPH0249222A (ja) * 1989-05-30 1990-02-19 Mitsubishi Electric Corp 光学式ピツクアツプ装置
US4998011A (en) * 1989-11-17 1991-03-05 Applied Magnetics Corporation Flat plate focus sensing apparatus
US5245174A (en) * 1990-10-15 1993-09-14 Applied Magnetics Corporation Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
GB2248989B (en) * 1990-10-15 1995-05-24 Applied Magnetics Corp Focus sensing apparatus and method
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
US5568315A (en) * 1991-05-28 1996-10-22 Discovision Associates Optical beamsplitter
JP2795571B2 (ja) * 1992-01-07 1998-09-10 シャープ株式会社 光ディスク装置
JP2950011B2 (ja) * 1992-04-06 1999-09-20 松下電器産業株式会社 ミラー駆動装置
JPH05334703A (ja) * 1992-05-29 1993-12-17 Matsushita Electric Ind Co Ltd ミラー移動量検出装置
GB2327291B (en) 1997-06-26 2001-12-12 Asahi Optical Co Ltd Optical system for optical disk drive
US6424068B2 (en) 1997-06-27 2002-07-23 Asahi Kogaku Kogyo Kabushiki Kaisha Galvano mirror unit
FR2765351B1 (fr) * 1997-06-27 2005-04-22 Asahi Optical Co Ltd Systeme de detection de rotation pour miroir galvanique
DE19828689A1 (de) 1997-06-27 1999-01-07 Asahi Optical Co Ltd Spiegelgalvanometereinheit
JPH1186328A (ja) 1997-09-12 1999-03-30 Asahi Optical Co Ltd 光学式情報記録再生装置
US6404715B1 (en) 1997-10-06 2002-06-11 Asahi Kogaku Kogyo Kabushiki Kaisha Detecting system for detecting rotation angle of deflection mirror
US6421156B1 (en) 1997-10-17 2002-07-16 Asahi Kogaku Kogyo Kabushiki Kaisha Galvano mirror unit
US6344917B1 (en) 1997-10-17 2002-02-05 Asahi Kogaku Kogyo Kabushiki Kaisha Galvano mirror unit
US6324141B2 (en) 1997-10-24 2001-11-27 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system for optical disc drive
US6404485B1 (en) 1997-10-24 2002-06-11 Asahi Kogaku Kogyo Kabushiki Kaisha Rotation amount detecting system of deflection mirror for optical disc drive
US6292447B1 (en) 1997-10-24 2001-09-18 Asahi Kogaku Kogyo Kabushiki Kaisha Head for optical disc drive
US6333910B1 (en) 1997-10-31 2001-12-25 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system for optical disc drive
US6341106B1 (en) 1997-11-05 2002-01-22 Asahi Kogaku Kogyo Kabushiki Kaisha Optical disc drive
US6278682B1 (en) 1997-11-08 2001-08-21 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system for optical disc drive
US6650604B1 (en) 1997-12-27 2003-11-18 Pentax Corporation Optical head of disk drive
US6407975B1 (en) 1998-03-16 2002-06-18 Asahi Kogaku Kogyo Kabushiki Kaisha Of Tokyo Optical disk drive
EP1157379B1 (en) * 1999-12-24 2008-10-08 Koninklijke Philips Electronics N.V. Optical scanning unit comprising a detection system for detecting the position of a movable element within the unit
US7129473B2 (en) * 2003-05-16 2006-10-31 Olympus Corporation Optical image pickup apparatus for imaging living body tissue

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101796B (de) * 1958-05-24 1961-03-09 Zeiss Carl Fa Strahlenteilungswechsler fuer Photomikroskope
US3731098A (en) * 1972-03-06 1973-05-01 Spectrotherm Corp Image scanner drive system
US3772464A (en) * 1972-04-17 1973-11-13 Spectrotherm Corp Rotating polygon mirror assembly with an interior motor
US3931459A (en) * 1974-02-04 1976-01-06 Zenith Radio Corporation Video disc
JPS5146018A (nl) * 1974-10-18 1976-04-20 Victor Company Of Japan
NL181693C (nl) * 1974-11-29 1987-10-01 Philips Nv Inrichting voor het langs optische weg uitlezen van een stralingsreflekterende registratiedrager.
NL174609C (nl) * 1975-10-15 1984-07-02 Philips Nv Volgspiegelinrichting in een optische platenspeler.
US4100576A (en) * 1976-04-28 1978-07-11 Zenith Radio Corporation Electromagnetic optical beam controller having an eddy current damper for arresting mechanical resonance
GB1532345A (en) * 1976-06-25 1978-11-15 Hitachi Ltd Information play-back apparatus
NL7700674A (nl) * 1977-01-24 1978-07-26 Philips Nv Electrisch bestuurbare zwenkspiegelinrichting.
NL7810386A (nl) * 1978-10-17 1980-04-21 Philips Nv Optische leesinrichting voor het uitlezen van een schijfvormige registratiedrager.
JPS626580Y2 (nl) * 1979-11-17 1987-02-16
JPS6215864Y2 (nl) * 1980-08-04 1987-04-22

Also Published As

Publication number Publication date
FR2492144B1 (nl) 1984-02-24
ES506155A0 (es) 1982-09-01
DD213543A5 (de) 1984-09-12
GB2086092A (en) 1982-05-06
FR2492144A1 (fr) 1982-04-16
SE452074B (sv) 1987-11-09
CA1182912A (en) 1985-02-19
IT8124438A0 (it) 1981-10-09
NL8005633A (nl) 1982-05-03
US4423496A (en) 1983-12-27
KR900000496B1 (ko) 1990-01-31
ES8207369A1 (es) 1982-09-01
HK98984A (en) 1984-12-28
GB2086092B (en) 1984-06-20
KR830008309A (ko) 1983-11-18
AT371624B (de) 1983-07-11
ATA437581A (de) 1982-11-15
SE8105989L (sv) 1982-04-14
IT1138945B (it) 1986-09-17
AU7618181A (en) 1982-04-22
BE890702A (fr) 1982-04-13
JPS5794942A (en) 1982-06-12
DE3140349C2 (nl) 1991-12-12
DE3140349A1 (de) 1982-08-12

Similar Documents

Publication Publication Date Title
GB2086092B (en) Tracking apparatus for an optically readable record
AU542656B2 (en) Optically readable videodisc with apparatus for recording on/reading from same
AU539048B2 (en) Apparatus for writing on optically readable disc
DE3379484D1 (en) Apparatus for optically reading information
GB2085192B (en) Tracking servo apparatus for optical information reproduciing systems
DE3162939D1 (en) Optical record-playback device for an information carrier
GB8403754D0 (en) Recording/reproducing apparatus
DE3171330D1 (en) System for recording picture information
GB2100033B (en) Apparatus for optically reading information
HK46188A (en) An image recording apparatus
AU536872B2 (en) Recording apparatus
DE3266965D1 (en) Apparatus for preformatting an optical disk
DE3267335D1 (en) Optical information reading apparatus
GB2071356B (en) Image reproducing apparatus
GB2088105B (en) Data recording apparatus
GB8331143D0 (en) Device for identifying data supports
DE3270565D1 (en) Optical disk apparatus
DE3175840D1 (en) Laser apparatus
GB2146786B (en) An image reading apparatus
GB8301818D0 (en) Apparatus for optically reading information
DE3270695D1 (en) Optical information tracking apparatus
EP0039516A3 (en) Recording member for recording apparatus
GB2076176B (en) Focusing optical apparatus
GB2080560B (en) Optical information record members
JPS57130007A (en) Focusing apparatus for optical system