ES2074535T3 - Circuito de control de video. - Google Patents

Circuito de control de video.

Info

Publication number
ES2074535T3
ES2074535T3 ES90304011T ES90304011T ES2074535T3 ES 2074535 T3 ES2074535 T3 ES 2074535T3 ES 90304011 T ES90304011 T ES 90304011T ES 90304011 T ES90304011 T ES 90304011T ES 2074535 T3 ES2074535 T3 ES 2074535T3
Authority
ES
Spain
Prior art keywords
video
contrast
control circuit
signal
responsive
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 - Lifetime
Application number
ES90304011T
Other languages
English (en)
Inventor
Charles Bailey Neal
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.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics Inc
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 Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Application granted granted Critical
Publication of ES2074535T3 publication Critical patent/ES2074535T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Abstract

UN CIRCUITO DE CONTROL DE CONTRASTE (54) DESARROLLA UNA SEÑAL DE CONTROL DE GANANCIA VIDEO PARA VARIAR CONTINUAMENTE LA GANANCIA VIDEO DE UNA SEÑAL VIDEO PARA AJUSTAR EL CONTRASTE DE LA SEÑAL VIDEO Y LIMITAR LA CORRIENTE DE HAZ. EL CIRCUITO DE CONTROL DE CONTRASTE PUEDE COMPRENDER UN CONTROL DE CONTRASTE AUTOMATICO (24) QUE RESPONDE A LOS PICOS DE SEÑAL VIDEO, UN LIMITADOR (70) DE CONTRASTE QUE RESPONDE A UN CONTROL DE CORRIENTE EN HAZ, RELACIONADA CON LA INTENSIDAD DE LA IMAGEN MEDIA Y UN CONTROL MANUAL (20). UN MODULADOR DE BRILLO (72) RESPONDE TAMBIEN A LA SEÑAL DE CONTROL DE CONTRASTE PARA AJUSTAR CONTINUAMENTE LA BRILLANTEZ DE LA SEÑAL VIDEO INVERSAMENTE CON EL CONTRASTE. LA MODULACION DE BRILLO ES UTIL ESPECIALMENTE COMO PARTE DE UN CIRCUITO DE CONTROL VIDEO DE UNA IMAGEN-EN-IMAGEN, COMPRENDIENDO ADEMAS FUENTES VIDEO (30,32) PARA PRIMERA Y SEGUNDA SEÑALES VIDEO Y UN SELECTOR (34) PARA ALIMENTAR ALTERNATIVAMENTE LA PRIMERA Y SEGUNDA SEÑALES VIDEO A UN AMPLIFICADOR VIDEO (52) PARA FORMAR UNA IMAGEN PRINCIPAL CON UNA INTERCALACION DE IMAGEN SECUNDARIA.
ES90304011T 1989-04-18 1990-04-12 Circuito de control de video. Expired - Lifetime ES2074535T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/339,847 US4947253A (en) 1989-04-18 1989-04-18 Brightness modulator for closed loop compensation of black level

Publications (1)

Publication Number Publication Date
ES2074535T3 true ES2074535T3 (es) 1995-09-16

Family

ID=23330884

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90304011T Expired - Lifetime ES2074535T3 (es) 1989-04-18 1990-04-12 Circuito de control de video.

Country Status (13)

Country Link
US (1) US4947253A (es)
EP (1) EP0393946B1 (es)
JP (1) JP2808474B2 (es)
KR (1) KR100188242B1 (es)
CN (1) CN1024883C (es)
AT (1) ATE125408T1 (es)
CA (1) CA2013344C (es)
DE (1) DE69020939T2 (es)
DK (1) DK0393946T3 (es)
ES (1) ES2074535T3 (es)
FI (1) FI97006C (es)
MY (1) MY106692A (es)
TR (1) TR26105A (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134490A (en) * 1989-04-18 1992-07-28 Thomson Consumer Electronics, Inc. Beam current limiter with brightness control threshold extension
US5003394A (en) * 1989-08-25 1991-03-26 Rca Licensing Corporation Dynamic video system including automatic contrast and "white-stretch" processing sections
US4980756A (en) * 1989-08-25 1990-12-25 Rca Licensing Corporation Control signal generator for a television system
US5079623A (en) * 1990-04-30 1992-01-07 Thomson Consumer Electronics, Inc. Signal clamp for a dual function input terminal of a "one-chip" television signal processing IC
US5125046A (en) * 1990-07-26 1992-06-23 Ronald Siwoff Digitally enhanced imager for the visually impaired
JPH04326056A (ja) * 1991-04-25 1992-11-16 Olympus Optical Co Ltd 超音波顕微鏡
US5202765A (en) * 1991-05-06 1993-04-13 Thomson Consumer Electronics, Inc. Television receiver with picture in picture and non-linear processing
US5847773A (en) * 1991-08-30 1998-12-08 Thomson Consumer Electronics, Inc. Video system including apparatus for deactivating an automatic control arrangement
US5204748A (en) * 1991-12-11 1993-04-20 Thomson Consumer Electronics, Inc. Beam current limiting arrangement for a television system with picture-in-picture provisions
JPH05316446A (ja) * 1992-05-08 1993-11-26 Matsushita Electric Ind Co Ltd 階調補正装置
US5245434A (en) * 1992-05-22 1993-09-14 Thomson Consumer Electronics, Inc. Autopix circuit with inserted vertical blanking
US5361101A (en) * 1993-11-19 1994-11-01 Zenith Electronics Corporation Preamplifier for multimedia display
JPH07264503A (ja) * 1994-03-23 1995-10-13 Toshiba Corp テレビジョン受像機
KR970005942B1 (ko) * 1994-09-16 1997-04-22 엘지전자 주식회사 모니터의 휘도 자동보정장치
CN1135140A (zh) * 1995-02-27 1996-11-06 松下电器产业株式会社 用于多重图像显示的补偿电压发生装置及其视频显示装置
DE19709681A1 (de) 1997-03-11 1998-09-17 Thomson Brandt Gmbh Schaltung zur Überwachung des Strahlstroms in einer Farbildröhre
JP3783645B2 (ja) * 2002-04-05 2006-06-07 株式会社日立製作所 コントラスト調整方法、コントラスト調整回路及びそれを用いた映像表示装置
US7728829B2 (en) * 2006-01-13 2010-06-01 Hewlett-Packard Development Company, L.P. Display system
US7733357B2 (en) * 2006-01-13 2010-06-08 Hewlett-Packard Development Company, L.P. Display system
KR102528532B1 (ko) 2018-08-23 2023-05-04 삼성전자주식회사 디스플레이 장치 및 그 휘도 제어 방법

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400427A (en) * 1971-11-08 1975-07-16 Rca Corp Video signal processing apparatus
US3886305A (en) * 1972-04-24 1975-05-27 Etec Corp Automatic contrast and dark level control for scanning electron microscopes
US4005262A (en) * 1972-06-30 1977-01-25 Matsushita Electric Industrial Co., Ltd. Brightness and contrast control for television receiver
JPS5537146B2 (es) * 1972-08-28 1980-09-26
US3969579A (en) * 1974-03-27 1976-07-13 Gte Sylvania Incorporated Contrast, brightness and peaking control circuit
US4126884A (en) * 1977-05-05 1978-11-21 Rca Corporation Kinescope beam current limiter employing automatic sequential control of image contrast and brightness to limit beam current
US4137552A (en) * 1977-05-05 1979-01-30 Rca Corporation Automatic beam current limiter with independently determined threshold level and dynamic control range
GB2035019B (en) * 1978-10-12 1982-12-15 Rca Corp Kinescope beam current limiter
US4253121A (en) * 1978-10-12 1981-02-24 Rca Corporation Plural sequential operating mode automatic kinescope beam current limiter
US4253110A (en) * 1979-12-14 1981-02-24 Rca Corporation Automatic kinescope beam current limiter with sequential control modes
JPS56104585A (en) * 1980-01-23 1981-08-20 Sony Corp Automatic luminance adjusting device of picture tube
JPS5986974A (ja) * 1982-11-11 1984-05-19 Sharp Corp 自動輝度制限回路
JPS60171875A (ja) * 1984-02-16 1985-09-05 Matsushita Electric Ind Co Ltd ２画面テレビジヨン受像機
US4656516A (en) * 1985-03-25 1987-04-07 Rca Corporation Vertical subsampling and memory synchronization system for a picture within a picture television receiver
US4652908A (en) * 1985-03-25 1987-03-24 Rca Corporation Filtering system for processing a reduced-resolution video image
US4656515A (en) * 1985-03-25 1987-04-07 Rca Corporation Horizontal compression of pixels in a reduced-size video image utilizing cooperating subsampling and display rates
US4638360A (en) * 1985-09-03 1987-01-20 Rca Corporation Timing correction for a picture-in-picture television system
US4663668A (en) * 1986-06-12 1987-05-05 Rca Corporation Brightness clamping apparatus for TV receiver with multiple inputs

Also Published As

Publication number Publication date
KR100188242B1 (ko) 1999-06-01
EP0393946A2 (en) 1990-10-24
DK0393946T3 (da) 1995-09-04
CN1048962A (zh) 1991-01-30
ATE125408T1 (de) 1995-08-15
FI97006C (fi) 1996-09-25
DE69020939D1 (de) 1995-08-24
KR900017412A (ko) 1990-11-16
TR26105A (tr) 1994-12-15
DE69020939T2 (de) 1996-03-21
JP2808474B2 (ja) 1998-10-08
CN1024883C (zh) 1994-06-01
FI97006B (fi) 1996-06-14
MY106692A (en) 1995-07-31
EP0393946B1 (en) 1995-07-19
JPH02295386A (ja) 1990-12-06
FI901839A0 (fi) 1990-04-11
CA2013344A1 (en) 1990-10-18
CA2013344C (en) 2000-02-22
US4947253A (en) 1990-08-07
EP0393946A3 (en) 1991-12-27

Similar Documents

Publication Publication Date Title
ES2074535T3 (es) Circuito de control de video.
KR910005675A (ko) 텔레비젼 시스템
ES8106980A1 (es) Perfeccionamientos en aparatos limitadores automaticos del haz electronico de un cinescopio con modos de control de se-cuenciales.
FI98678C (fi) Kuvansäätöön sovitettu valoisuustasonsäätö
CA2072234A1 (en) Intensity correction device
HU9203219D0 (en) Circuit arrangement for processing video signals with feedback
ES448125A1 (es) Perfeccionamientos en disposiciones para el control de ga- nancia en sistemas de relacion de senales de television en color.
EP0833504A3 (en) Illumination control system for a film scanner
PT96763A (pt) Alimentador de corrente que funciona no modo de comutacao
MY115939A (en) Video tone correction control circuit
GB2234132A (en) Sensed eht level controls brightness, contrast and therefore beam current
DE3752033T2 (de) Stromreglung von einem Fehlerverstärker
EP0100408A3 (en) Method of adjusting the control magnitudes in radio and television receivers
JPS5610781A (en) Automatic brightness correcting circuit of television receiver
KR970004902Y1 (ko) 21핀 유로 모니터짹의 전환스위칭(FAST/swithing)을 이용한 화면축소회로
JPS57162580A (en) Video amplifying circuit
JPS572167A (en) Focus compensating circuit
JPS577680A (en) Automatic picture-quality regulator
CA2086731A1 (en) Circuit for regulating the color subcarrier amplitude in a video recorder
MY104808A (en) Beam current limiting arrangement having a peak amplitu -de responsive threshold.
JPS6469185A (en) Image pickup device
JPS5662487A (en) Automatic luminance adjusting circuit
MY111249A (en) Video system including apparatus for deactivating an automatic control arrangement
JPS5668072A (en) Dynamic range correction method in picture reproducing device
JPS55138980A (en) Halation preventive system of television camera

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 393946

Country of ref document: ES