BR7303337D0 - Aparelho para ler um disco chato gravado - Google Patents

Aparelho para ler um disco chato gravado

Info

Publication number
BR7303337D0
BR7303337D0 BR3337/73A BR333773A BR7303337D0 BR 7303337 D0 BR7303337 D0 BR 7303337D0 BR 3337/73 A BR3337/73 A BR 3337/73A BR 333773 A BR333773 A BR 333773A BR 7303337 D0 BR7303337 D0 BR 7303337D0
Authority
BR
Brazil
Prior art keywords
appliance
reading
flat disc
recorded flat
recorded
Prior art date
Application number
BR3337/73A
Other languages
English (en)
Inventor
G Bouwneus
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 BR7303337D0 publication Critical patent/BR7303337D0/pt

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
BR3337/73A 1972-05-11 1973-05-08 Aparelho para ler um disco chato gravado BR7303337D0 (pt)

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
BR7303337D0 true BR7303337D0 (pt) 1974-07-25

Family

ID=19816021

Family Applications (1)

Application Number Title Priority Date Filing Date
BR3337/73A BR7303337D0 (pt) 1972-05-11 1973-05-08 Aparelho para ler um disco chato gravado

Country Status (20)

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

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NL7509906A (nl) * 1975-08-21 1977-02-23 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.
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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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
JPS5958637A (ja) * 1982-09-28 1984-04-04 Sony Corp 光学式再生装置
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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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
DE3679648D1 (de) * 1985-12-10 1991-07-11 Nec Corp Optischer kopf mit einem beugungsgitter zum richten von zwei oder mehreren gebeugten lichtstrahlen auf optische detektoren.
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
DE3786497T2 (de) * 1986-07-18 1994-02-17 Nec Corp Doppelbrechendes Beugungsgitter und optischer Kopf, in welchem ein linearpolarisierter Strahl auf dieses Gitter gelenkt wird.
US4799210A (en) * 1986-11-05 1989-01-17 Unisys Corporation Fiber optic read/write head for an optical disk memory system
JPS6431582U (pt) * 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.
EP0525896B1 (en) * 1991-08-01 1997-01-02 Koninklijke Philips Electronics N.V. Compatible optical scanning device
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JPH05101431A (ja) * 1991-10-07 1993-04-23 Sony Corp 光デイスク再生装置
US5729334A (en) * 1992-03-10 1998-03-17 Van Ruyven; Lodewijk Johan Fraud-proof identification system
TW287239B (pt) * 1994-06-07 1996-10-01 Philips Electronics Nv
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CN100411022C (zh) * 1995-04-10 2008-08-13 松下电器产业株式会社 在光学记录载体上记录数据的方法
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US3198880A (en) * 1952-09-03 1965-08-03 Hall William D Photographic disc reproduction of television signals
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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
ZA732242B (en) 1974-11-27
NO141673C (no) 1980-04-16
AU472506B2 (en) 1976-05-27
FR2183993B1 (pt) 1977-02-18
FR2183993A1 (pt) 1973-12-21
GB1434834A (en) 1976-05-05
YU35403B (en) 1980-12-31
DK132596B (da) 1976-01-05
AT322013B (de) 1975-04-25
DK132596C (da) 1976-05-31
ES414579A1 (es) 1976-03-01
US3876842A (en) 1975-04-08
AU5529673A (en) 1974-11-07
DE2320477A1 (de) 1973-11-29
SE390077B (sv) 1976-11-29
IT985880B (it) 1974-12-20
NO141673B (no) 1980-01-07
NL160138B (nl) 1979-04-17
CA987029A (en) 1976-04-06
YU122973A (en) 1980-06-30
CH563624A5 (pt) 1975-06-30
JPS5313123B2 (pt) 1978-05-08
DE2320477B2 (de) 1976-07-01
BE799336A (fr) 1973-11-09
NL160138C (nl) 1979-09-17
PL86325B1 (pt) 1976-05-31
AR197982A1 (es) 1974-05-24
JPS4950954A (pt) 1974-05-17
NL7206378A (pt) 1973-11-13

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