FR2415931A1 - Dispositif de visualisation de television - Google Patents

Dispositif de visualisation de television

Info

Publication number
FR2415931A1
FR2415931A1 FR7901785A FR7901785A FR2415931A1 FR 2415931 A1 FR2415931 A1 FR 2415931A1 FR 7901785 A FR7901785 A FR 7901785A FR 7901785 A FR7901785 A FR 7901785A FR 2415931 A1 FR2415931 A1 FR 2415931A1
Authority
FR
France
Prior art keywords
circuit
current
viewing device
television viewing
darker
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.)
Granted
Application number
FR7901785A
Other languages
English (en)
Other versions
FR2415931B1 (fr
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
Publication of FR2415931A1 publication Critical patent/FR2415931A1/fr
Application granted granted Critical
Publication of FR2415931B1 publication Critical patent/FR2415931B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

Dispositif de visualisation de télévision dans lequel une cathode d'un tube de visualisation est commandée par un étage émetteur-suiveur dont le circuit collecteur fournit un signal de réglage pour un circuit de réglage du niveau de référence du courant de faisceau, des mesures étant prises pour compenser des courants de fuite circulant de et vers la cathode. A cet effet, on utilise un circuit de compensation du courant dans le plus noir que noir et on s'arrange de façon que le circuit de réglage du niveau de référence du courant de faisceau puisse agir sur le courant dans le plus noir que noir. Application aux téléviseurs.
FR7901785A 1978-01-25 1979-01-24 Dispositif de visualisation de television Granted FR2415931A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7800870,A NL184657C (nl) 1978-01-25 1978-01-25 Televisiebeeldweergeefinrichting.

Publications (2)

Publication Number Publication Date
FR2415931A1 true FR2415931A1 (fr) 1979-08-24
FR2415931B1 FR2415931B1 (fr) 1984-07-13

Family

ID=19830223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901785A Granted FR2415931A1 (fr) 1978-01-25 1979-01-24 Dispositif de visualisation de television

Country Status (16)

Country Link
US (1) US4224640A (fr)
JP (1) JPS54111221A (fr)
AU (1) AU528435B2 (fr)
BE (1) BE873633A (fr)
BR (1) BR7900400A (fr)
CA (1) CA1135837A (fr)
DE (1) DE2902366C2 (fr)
DK (1) DK146309C (fr)
ES (1) ES477072A1 (fr)
FR (1) FR2415931A1 (fr)
GB (1) GB2014408B (fr)
IT (1) IT1117582B (fr)
MX (1) MX147217A (fr)
NL (1) NL184657C (fr)
NZ (1) NZ189428A (fr)
SE (1) SE430012B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331981A (en) * 1980-09-25 1982-05-25 Rca Corporation Linear high gain sampling amplifier
US4331982A (en) * 1980-09-25 1982-05-25 Rca Corporation Sample and hold circuit particularly for small signals
US4442458A (en) * 1982-03-29 1984-04-10 Tektronix, Inc. CRT Video drive circuit with beam current stabilization
US4463385A (en) * 1982-07-01 1984-07-31 Rca Corporation Kinescope black level current sensing apparatus
US4523233A (en) * 1982-11-12 1985-06-11 Rca Corporation Automatic bias control system with compensated sense point
US4516152A (en) * 1983-05-23 1985-05-07 Rca Corporation Video signal processor with automatic kinescope white balance and beam current limiter control systems
US4703345A (en) * 1983-12-20 1987-10-27 Sony Corporation Current control apparatus in which the beam current for all three colors is controlled according to average and peak values
NL8502637A (nl) * 1985-03-06 1986-10-01 Philips Nv Beeldweergeefinrichting.
NL8502636A (nl) * 1985-03-06 1986-10-01 Philips Nv Beeldweergeefinrichting.
US4730210A (en) * 1985-08-14 1988-03-08 Zenith Electronics Corporation Wideband analog RGB video processor with negative feedback capability and black level control
FR2674705A1 (fr) * 1991-03-29 1992-10-02 Philips Electro Grand Public Dispositif amplificateur video.
US5278476A (en) * 1991-11-13 1994-01-11 U.S. Philips Corporation Display device including a black level setting circuit
JPH0614272B2 (ja) * 1992-04-28 1994-02-23 インターナショナル・ビジネス・マシーンズ・コーポレイション 表示システム
WO1997029588A2 (fr) * 1996-02-07 1997-08-14 Philips Electronics N.V. Mesure d'un courant de faisceau dans un etage de sortie video
US5994841A (en) * 1996-10-25 1999-11-30 Welch Allyn, Inc. Circuit for biasing display device by compensating for a varying leakage current
US5892544A (en) * 1997-09-15 1999-04-06 Sony Electronics, Inc. Beam current detection and control system for a cathode ray tube
US6226037B1 (en) * 1998-07-28 2001-05-01 Thomson Licensing S.A. AKB interface circuit for kine driver IC

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034680A1 (fr) * 1969-03-05 1970-12-11 Philips Nv

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598913A (en) * 1968-12-18 1971-08-10 Philips Corp Television receiver
NL164170C (nl) * 1972-02-24 1980-11-17 Philips Nv Kleurentelevisieweergeefinrichting met een bundel- stroomklemregelschakeling.
NL179329C (nl) * 1974-09-09 1986-08-18 Philips Nv Televisieontvanger met een bundelstroombegrenzingsschakeling.
US4012775A (en) * 1975-04-28 1977-03-15 Thomson Csf Laboratories, Inc. System for stabilizing cathode ray tube operation
US4067048A (en) * 1976-08-19 1978-01-03 Rca Corporation Automatic beam current limiter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034680A1 (fr) * 1969-03-05 1970-12-11 Philips Nv

Also Published As

Publication number Publication date
NL7800870A (nl) 1979-07-27
SE430012B (sv) 1983-10-10
JPH025352B2 (fr) 1990-02-01
DK26479A (da) 1979-07-26
IT1117582B (it) 1986-02-17
AU4359079A (en) 1979-08-02
JPS54111221A (en) 1979-08-31
NL184657B (nl) 1989-04-17
DK146309B (da) 1983-08-29
FR2415931B1 (fr) 1984-07-13
DE2902366A1 (de) 1979-07-26
NZ189428A (en) 1982-02-23
GB2014408A (en) 1979-08-22
DK146309C (da) 1984-02-06
BR7900400A (pt) 1979-08-21
SE7900524L (sv) 1979-07-26
DE2902366C2 (de) 1985-01-17
IT7967137A0 (it) 1979-01-22
US4224640A (en) 1980-09-23
MX147217A (es) 1982-10-25
CA1135837A (fr) 1982-11-16
BE873633A (fr) 1979-07-23
NL184657C (nl) 1989-09-18
GB2014408B (en) 1982-04-15
AU528435B2 (en) 1983-04-28
ES477072A1 (es) 1979-07-16

Similar Documents

Publication Publication Date Title
FR2415931A1 (fr) Dispositif de visualisation de television
FR2448270A1 (fr) Systeme pour regler automatiquement la polarisation d'un tube-image
FR2403700A1 (fr) Recepteur de television dont l'ecran est un panneau electroluminescent
FR2401575A1 (fr) Dispositif de visualisation pour television en couleurs
GB830083A (en) Improvements in and relating to television apparatus
KR840000135A (ko) 자동 비디오 신호 피이킹 제어 시스템
FR2448268A1 (fr) Systeme de traitement de signaux video ayant un circuit de reglage automatique et previsible de la luminosite
FR2410404A1 (fr) Circuit de correction de gamma pour television
FR2389291A1 (fr) Dispositif de balayage comprenant un tube a rayons cathodiques
ES8405960A1 (es) Perfeccionamientos en los aparatos para el registro sobre placas fotograficas de imagenes presentadas en visualizadores de video
JPS5212517A (en) Binalizing device of video signal
JPH02119381A (ja) 黒レベル補正回路
JPS5356921A (en) Exposure control system for television caemra
JPS55109081A (en) Television camera
SU551564A1 (ru) Способ измерени поступательного перемещени границы перепада ркостей на экране
FR2456451A1 (fr) Dispositif de reproduction d'image de television
SU882023A1 (ru) Способ измерени неравномерности сигнала по полю изображени телевизионных передающих трубок
JPS51131210A (en) Video camera
JPS5672582A (en) Solid-state image pickup device
JPS5431219A (en) Method and apparatus for read-out of electrostatic latent image
JPS5388520A (en) Intermittent type x-ray television set
GB927696A (en) Improvements in automatic gain control circuit arrangements
SU794773A1 (ru) Устройство автоматической регулировкиРЕжиМА пЕРЕдАющЕй ТЕлЕВизиОННОйТРубКи
JPS57164669A (en) Automatic beam controlling method for image pickup tube
GB608193A (en) Improvements in or relating to photo-telegraphy systems

Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse