CA987029A - Apparatus for reading a flat record carrier - Google Patents

Apparatus for reading a flat record carrier

Info

Publication number
CA987029A
CA987029A CA170,649A CA170649A CA987029A CA 987029 A CA987029 A CA 987029A CA 170649 A CA170649 A CA 170649A CA 987029 A CA987029 A CA 987029A
Authority
CA
Canada
Prior art keywords
reading
record carrier
flat record
flat
carrier
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
CA170,649A
Other languages
English (en)
Other versions
CA170649S (en
Inventor
Gijsbertus Bouwhuis
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA987029A publication Critical patent/CA987029A/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
    • G11B7/0903—Multi-beam tracking systems
CA170,649A 1972-05-11 1973-05-08 Apparatus for reading a flat record carrier Expired CA987029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7206378.A NL160138C (nl) 1972-05-11 1972-05-11 Inrichting voor het uitlezen van een vlakke registratie- drager.

Publications (1)

Publication Number Publication Date
CA987029A true CA987029A (en) 1976-04-06

Family

ID=19816021

Family Applications (1)

Application Number Title Priority Date Filing Date
CA170,649A Expired CA987029A (en) 1972-05-11 1973-05-08 Apparatus for reading a flat record carrier

Country Status (20)

Country Link
US (1) US3876842A (xx)
JP (1) JPS5313123B2 (xx)
AR (1) AR197982A1 (xx)
AT (1) AT322013B (xx)
AU (1) AU472506B2 (xx)
BE (1) BE799336A (xx)
BR (1) BR7303337D0 (xx)
CA (1) CA987029A (xx)
CH (1) CH563624A5 (xx)
DK (1) DK132596C (xx)
ES (1) ES414579A1 (xx)
FR (1) FR2183993B1 (xx)
GB (1) GB1434834A (xx)
IT (1) IT985880B (xx)
NL (1) NL160138C (xx)
NO (1) NO141673C (xx)
PL (1) PL86325B1 (xx)
SE (1) SE390077B (xx)
YU (1) YU35403B (xx)
ZA (1) ZA732242B (xx)

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NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.
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JPS5413180A (en) * 1977-06-28 1979-01-31 Osamu Suzuki Palletizer of bottle
US4243850A (en) * 1979-02-07 1981-01-06 Eastman Kodak Company Apparatus for tracking a record track on a video disc
NL7904724A (nl) * 1979-06-18 1980-12-22 Philips Nv Optische aftastinrichting met fokusseerstelsel.
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JPS58220252A (ja) * 1982-06-16 1983-12-21 Hitachi Ltd 光学式ピツクアツプのトラツキング誤差信号検出回路
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JPH0687316B2 (ja) * 1983-02-10 1994-11-02 オリンパス光学工業株式会社 光学式再生装置
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JPS6194246A (ja) * 1984-10-15 1986-05-13 Sony Corp 光学式ヘッドのトラッキング誤差検出方法
US4748609A (en) 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
CA1258909A (en) * 1985-03-29 1989-08-29 Hideki Hosoya Optical information recording medium and method for recording information on said medium and reproducing information therefrom
US4707816A (en) * 1985-03-29 1987-11-17 Hitachi, Ltd. Method and apparatus for composite wobbled and push-pull tracking servo system
DE3618137A1 (de) * 1985-05-31 1986-12-11 Hitachi, Ltd., Tokio/Tokyo Bildplatten-zugriffsverfahren und bildplattenspeicher
US4779253A (en) * 1985-07-30 1988-10-18 Laser Magnetic Storage International Company Sampled servo for an optical disk drive
EP0228620B1 (en) * 1985-12-10 1991-06-05 Nec Corporation Optical head comprising a diffraction grating for directing two or more diffracted beams to optical detectors
EP0239131A3 (en) * 1986-03-28 1989-05-24 Csk Corporation Optical recording medium and tracking method therefor
EP0241942B1 (en) * 1986-04-18 1992-03-04 Mitsubishi Denki Kabushiki Kaisha Optical type head device
EP0253403B1 (en) * 1986-07-18 1993-07-14 Nec Corporation Diffraction grating using birefringence and optical head in which a linearly polarized beam is directed to a diffraction grating
US4799210A (en) * 1986-11-05 1989-01-17 Unisys Corporation Fiber optic read/write head for an optical disk memory system
JPS6431582U (xx) * 1987-08-20 1989-02-27
JPH0827961B2 (ja) * 1987-11-11 1996-03-21 日本電気ホームエレクトロニクス株式会社 ホログラム式光ヘッドの光検出器
NL8800133A (nl) 1988-01-21 1989-08-16 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
US5309416A (en) * 1988-04-26 1994-05-03 Canon Kabushiki Kaisha Method and apparatus for initializing intermediate region between tracks on magnetooptical recording medium
US4991160A (en) * 1988-05-31 1991-02-05 Nikon Precision Inc. Integrated optical device for magneto-optical recording and reading head
US5062094A (en) * 1988-11-07 1991-10-29 Minolta Camera Kabushiki Kaisha Optical head for optical disk system
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JPH04181522A (ja) * 1990-11-16 1992-06-29 Sony Corp 光ディスク装置
JPH04195938A (ja) * 1990-11-28 1992-07-15 Olympus Optical Co Ltd 光学的情報記録再生装置
NL9002841A (nl) * 1990-12-21 1992-07-16 Philips Nv Werkwijze en inrichting voor het langs optische weg inschrijven, uitlezen, en wissen van een meervlaks registratiedrager, en registratiedrager geschikt voor deze werkwijze en inrichting.
TW213519B (xx) * 1991-08-01 1993-09-21 Philips Nv
EP0525896B1 (en) * 1991-08-01 1997-01-02 Koninklijke Philips Electronics N.V. Compatible optical scanning device
JPH05101431A (ja) * 1991-10-07 1993-04-23 Sony Corp 光デイスク再生装置
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TW347899U (en) 1994-08-31 1998-12-11 Sony Corp Optical recording/reproducing device
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US3155452A (en) * 1961-12-07 1964-11-03 Shell Oil Co Trace reproducing system
US3452163A (en) * 1965-12-08 1969-06-24 Phillip B Dahlen Optical phonograph apparatus with polarized light
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DE2121379C3 (de) * 1971-04-30 1979-10-18 Heinz 3000 Hannover Preuss Audiovisuelles Wiedergabegerät und dafür bestimmte Bild-Ton-Platte

Also Published As

Publication number Publication date
CH563624A5 (xx) 1975-06-30
NO141673C (no) 1980-04-16
DE2320477A1 (de) 1973-11-29
NO141673B (no) 1980-01-07
YU35403B (en) 1980-12-31
PL86325B1 (xx) 1976-05-31
DE2320477B2 (de) 1976-07-01
DK132596C (da) 1976-05-31
ES414579A1 (es) 1976-03-01
ZA732242B (en) 1974-11-27
NL7206378A (xx) 1973-11-13
GB1434834A (en) 1976-05-05
US3876842A (en) 1975-04-08
AU472506B2 (en) 1976-05-27
IT985880B (it) 1974-12-20
BR7303337D0 (pt) 1974-07-25
AR197982A1 (es) 1974-05-24
YU122973A (en) 1980-06-30
JPS4950954A (xx) 1974-05-17
BE799336A (fr) 1973-11-09
DK132596B (da) 1976-01-05
FR2183993B1 (xx) 1977-02-18
NL160138C (nl) 1979-09-17
SE390077B (sv) 1976-11-29
JPS5313123B2 (xx) 1978-05-08
NL160138B (nl) 1979-04-17
AT322013B (de) 1975-04-25
AU5529673A (en) 1974-11-07
FR2183993A1 (xx) 1973-12-21

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