NL7402504A - Inrichting voor het langs optische weg uitlezen van een registratiedrager. - Google Patents

Inrichting voor het langs optische weg uitlezen van een registratiedrager.

Info

Publication number
NL7402504A
NL7402504A NL7402504A NL7402504A NL7402504A NL 7402504 A NL7402504 A NL 7402504A NL 7402504 A NL7402504 A NL 7402504A NL 7402504 A NL7402504 A NL 7402504A NL 7402504 A NL7402504 A NL 7402504A
Authority
NL
Netherlands
Prior art keywords
optical reading
registration carrier
registration
carrier
reading
Prior art date
Application number
NL7402504A
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
Priority to NL7402504A priority Critical patent/NL7402504A/nl
Priority to DE19742445333 priority patent/DE2445333A1/de
Priority to AU73730/74A priority patent/AU495711B2/en
Priority to DK512874AA priority patent/DK136794B/da
Priority to GB42172/74A priority patent/GB1488691A/en
Priority to NO743521A priority patent/NO743521L/no
Priority to SE7412166A priority patent/SE404733B/xx
Priority to CA210,257A priority patent/CA1032381A/en
Priority to ES74430497A priority patent/ES430497A1/es
Priority to AT784274A priority patent/AT346111B/de
Priority to CH312176A priority patent/CH599651A5/de
Priority to IT27891/74A priority patent/IT1022459B/it
Priority to JP49112672A priority patent/JPS5078341A/ja
Priority to CH1316274A priority patent/CH591138A5/xx
Priority to BE149106A priority patent/BE820575A/xx
Priority to FR7433046A priority patent/FR2393263A1/fr
Priority to US05/527,244 priority patent/US3992575A/en
Publication of NL7402504A publication Critical patent/NL7402504A/nl
Priority to DK369976A priority patent/DK140389B/da
Priority to US05/718,398 priority patent/US4074314A/en
Priority to CA270,735A priority patent/CA1046318A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/7605—Television signal recording on discs or drums
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
    • G11B7/0912—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 push-pull method
    • 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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present
    • 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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • G11B2007/0924—Skewed beams methods (using an angled beam, i.e. a beam which is reflected from the disc at an angle different from 90°)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
NL7402504A 1973-10-01 1974-02-25 Inrichting voor het langs optische weg uitlezen van een registratiedrager. NL7402504A (nl)

Priority Applications (20)

Application Number Priority Date Filing Date Title
NL7402504A NL7402504A (nl) 1974-02-25 1974-02-25 Inrichting voor het langs optische weg uitlezen van een registratiedrager.
DE19742445333 DE2445333A1 (de) 1973-10-01 1974-09-23 Optoelektronisches system zur bestimmung einer abweichung zwischen der istlage und der sollage einer ebene in einem optischen abbildungssystem
AU73730/74A AU495711B2 (en) 1973-10-01 1974-09-26 Opto-electronic system for determining a deviation between the actual and the desired position of a plane in an optical imaging system
DK512874AA DK136794B (da) 1973-10-01 1974-09-27 Apparat til aflæsning af en registreringsbærer.
GB42172/74A GB1488691A (en) 1973-10-01 1974-09-27 Opto-electronic positioning-system
NO743521A NO743521L (nl) 1973-10-01 1974-09-27
SE7412166A SE404733B (sv) 1973-10-01 1974-09-27 Apparat for avlesning av en uppteckningsberare pa vilken information er lagrad i en optiskt lesbar sparstruktur
CA210,257A CA1032381A (en) 1973-10-01 1974-09-27 Opto-electronic system for determining a deviation between the actual and the desired position of a plane in an optical imaging system
ES74430497A ES430497A1 (es) 1973-10-01 1974-09-28 Perfeccionamientos introducidos en un sistema optoelectro- nico para determinar una desviacion entre la posicion real yla posicion deseada en un plano en un sistema optico forma- dor de imagenes.
AT784274A AT346111B (de) 1973-10-01 1974-09-30 Optoelektronisches system zur bestimmung einer abweichung der istlage von der sollage einer bildebene eines optischen abbildungsystems sowie vorrichtung zum auslesen bzw einschreiben von informationen mit einem solchen system
CH312176A CH599651A5 (en) 1973-10-01 1974-09-30 Optoelectronic system determination of deviation
IT27891/74A IT1022459B (it) 1973-10-01 1974-09-30 Apparecchiatura ottico elettronica per determinare deviazioni fra posizione effettive e desiderata di un piano
JP49112672A JPS5078341A (nl) 1973-10-01 1974-09-30
CH1316274A CH591138A5 (nl) 1973-10-01 1974-09-30
BE149106A BE820575A (fr) 1973-10-01 1974-09-30 Systeme opto-electronique
FR7433046A FR2393263A1 (fr) 1973-10-01 1974-10-01 Systeme opto-electronique
US05/527,244 US3992575A (en) 1974-02-25 1974-11-26 Apparatus for optically reading a record carrier by means of an autofocus device
DK369976A DK140389B (da) 1973-10-01 1976-08-16 Apparat til indskrivning af information i spor på en registreringsbærer.
US05/718,398 US4074314A (en) 1973-10-01 1976-08-27 Apparatus for optically reading a record carrier and correcting focus error
CA270,735A CA1046318A (en) 1973-10-01 1977-01-31 Opto-electronic system for determining a deviation between the actual and the desired position of a plane in an optical imaging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7402504A NL7402504A (nl) 1974-02-25 1974-02-25 Inrichting voor het langs optische weg uitlezen van een registratiedrager.

Publications (1)

Publication Number Publication Date
NL7402504A true NL7402504A (nl) 1975-08-27

Family

ID=19820819

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7402504A NL7402504A (nl) 1973-10-01 1974-02-25 Inrichting voor het langs optische weg uitlezen van een registratiedrager.

Country Status (2)

Country Link
US (1) US3992575A (nl)
NL (1) NL7402504A (nl)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445333A1 (de) * 1973-10-01 1975-04-10 Philips Nv Optoelektronisches system zur bestimmung einer abweichung zwischen der istlage und der sollage einer ebene in einem optischen abbildungssystem
FR2325953A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Senseur optique de focalisation et dispositif de focalisation comportant un tel senseur
JPS5922289B2 (ja) * 1975-11-20 1984-05-25 ソニー株式会社 ジヨウホウケンシユツソウチ
US4270045A (en) * 1977-06-20 1981-05-26 U.S. Philips Corporation Apparatus for reading an optical radiation-reflecting information carrier for controlling focus
US4358796A (en) * 1978-03-27 1982-11-09 Discovision Associates Spindle servo system for videodisc player
US4370679A (en) * 1978-03-27 1983-01-25 Discovision Associates Gain correction system for videodisc player apparatus
US4371899A (en) * 1978-03-27 1983-02-01 Discovision Associates Time base error correction system for player
NL7809635A (nl) * 1978-09-22 1980-03-25 Philips Nv Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur.
US4241423A (en) * 1978-12-22 1980-12-23 Rca Corporation Optical memory with injection laser as light source and detector
NL7904724A (nl) * 1979-06-18 1980-12-22 Philips Nv Optische aftastinrichting met fokusseerstelsel.
US4376303A (en) * 1980-12-19 1983-03-08 Rca Corporation Quasi-zoom lens optical focus sensor
US4501493A (en) * 1982-10-28 1985-02-26 Sony Corporation Apparatus for detecting a position of an optical pickup
US4689781A (en) * 1984-02-29 1987-08-25 Kabushiki Kaisha Toshiba Optical system for tracing information recording medium with multiple beams
US5416755A (en) * 1985-02-28 1995-05-16 Canon Kabushiki Kaisha Optical pickup using split beams impinging on different photo-detector areas
US5161133A (en) * 1989-09-29 1992-11-03 International Business Machines Corporation Magneto-optical storage system
FR3031586B1 (fr) * 2015-01-13 2017-02-10 Dymeo Capteurs inductifs de deplacement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495893A (en) * 1966-10-17 1970-02-17 Bell Telephone Labor Inc Optical limiter utilizing multiphoton absorbing material
US3622797A (en) * 1970-07-02 1971-11-23 Twentieth Cent Fox Film Corp Radiation sensitive automatic focus system
NL172202C (nl) * 1971-03-11 1983-07-18 Philips Nv Inrichting voor het uitlezen van een plaatvormige informatiedrager bevattende in optische vorm gecodeerde beeld- en/of geluidssignalen.
NL160138C (nl) * 1972-05-11 1979-09-17 Philips Nv Inrichting voor het uitlezen van een vlakke registratie- drager.
AR205243A1 (es) * 1972-05-11 1976-04-21 Philips Nv Aparato para la lectura de un portador de grabacion reflector plano

Also Published As

Publication number Publication date
US3992575A (en) 1976-11-16

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