ES2141741T3 - Amplificador para un aparato excitador de cinescopio. - Google Patents

Amplificador para un aparato excitador de cinescopio.

Info

Publication number
ES2141741T3
ES2141741T3 ES93109275T ES93109275T ES2141741T3 ES 2141741 T3 ES2141741 T3 ES 2141741T3 ES 93109275 T ES93109275 T ES 93109275T ES 93109275 T ES93109275 T ES 93109275T ES 2141741 T3 ES2141741 T3 ES 2141741T3
Authority
ES
Spain
Prior art keywords
amplifier
gain
high voltage
closed circuit
video
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
ES93109275T
Other languages
English (en)
Inventor
Anton Werner Keller
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.)
RCA Licensing Corp
Original Assignee
RCA Licensing Corp
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
Priority claimed from GB929212851A external-priority patent/GB9212851D0/en
Priority claimed from US07/906,313 external-priority patent/US5317240A/en
Application filed by RCA Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of ES2141741T3 publication Critical patent/ES2141741T3/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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • 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
    • H04N9/648—Video amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Receiver Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

UN AMPLIFICADOR INVERSOR, DE ALTO VOLTAJE DE UN CONTROLADOR DE UN CINESCOPIO (430) SE ACOPLA EN LA ENTRADA (431) DEL MISMO A UNA FUENTE (406) DE SEÑALES DE ENTRADA DE VIDEO DE ALTO VOLTAJE (RGB) QUE SERAN AMPLIFICADAS Y SE ACOPLA EN LA SALIDA (433) DEL MISMO PARA SUMINISTRAR SEÑALES DE SALIDA AMPLIFICADAS DE VIDEO A EL CATODO (420; 422; 424) DE UN CINESCOPIO (414). EL AMPLIFICADOR DE ALTO VOLTAJE INCLUYE LINEAS DE REALIMENTACION LINEALES (R2) Y NO LINEALES (R3, R4, C1, D1) QUE, EN COMBINACION, DETERMINAN UNA GANANCIA DE CIRCUITO CERRADO NOMINAL PARA EL AMPLIFICADOR. LA LINEA NO LINEAL INCLUYE ELEMENTOS DEPENDIENTES DE LA AMPLITUD (D1) Y DE LA FRECUENCIA (C1) PARA INCREMENTAR LA GANANCIA DEL CIRCUITO CERRADO DEL AMPLIFICADOR EN UNA CANTIDAD DADA EN AREAS DE BAJA BRILLANTEZ (NEGRO A GRIS) REPRESENTADAS EN EL CINESCOPIO (MEJORANDO DE ESTA FORMA LOS DETALLES DE LAS IMAGENES OSCURAS) E INCREMENTA LA GANANCIA DEL CIRCUITO CERRADO DEL AMPLIFICADOR MEDIANTE SUBSTANCIALMENTE LA MISMA CANTIDAD DADA PARA LOS COMPONENTES DE LAS SEÑALES DE DETALLE DE ALTA FRECUENCIA DE VIDEO EN AREAS DE LA IMAGEN DE ALTA BRILLANTEZ (MEJORANDO ASI EL CONTRASTE SUBJETIVO SIN PONER DE RELIEVE LOS PUNTOS Y EVITANDO LA IMPRESION DE IMAGENES CON "LLUVIA").
ES93109275T 1992-06-17 1993-06-09 Amplificador para un aparato excitador de cinescopio. Expired - Lifetime ES2141741T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929212851A GB9212851D0 (en) 1992-06-17 1992-06-17 Video output amplifier with non-linear feedback
US07/906,313 US5317240A (en) 1992-06-29 1992-06-29 Kinescope driver apparatus with contrast enhancement

Publications (1)

Publication Number Publication Date
ES2141741T3 true ES2141741T3 (es) 2000-04-01

Family

ID=26301085

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93109275T Expired - Lifetime ES2141741T3 (es) 1992-06-17 1993-06-09 Amplificador para un aparato excitador de cinescopio.

Country Status (10)

Country Link
EP (1) EP0575824B1 (es)
JP (1) JP3050261B2 (es)
KR (2) KR100311767B1 (es)
CN (1) CN1046074C (es)
DE (1) DE69327819T2 (es)
ES (1) ES2141741T3 (es)
MX (1) MX9303615A (es)
MY (1) MY110211A (es)
PT (1) PT575824E (es)
SG (1) SG93761A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2145901C (en) * 1994-04-28 2000-02-22 Anton Werner Keller Kinescope driver apparatus with gamma correction
KR19990058436A (ko) * 1997-12-30 1999-07-15 김영환 대형 모니터에서의 콘트라스트 이득 보상장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1582138A (en) * 1976-07-19 1980-12-31 Rca Corp Video amplifier circuit
US4295160A (en) * 1979-05-11 1981-10-13 Rca Corporation Signal processing circuit having a non-linear transfer function
GB2049347B (en) * 1979-05-11 1983-04-27 Rca Corp Video signal processing circuit having a nonlinear transfer function
US4366440A (en) * 1980-10-31 1982-12-28 Rca Corporation Adjustable contrast compressor
FR2653949B1 (fr) * 1989-10-30 1992-02-07 Celduc Const Elect Centre Dispositif de refroidissement pour inducteur de moteur lineaire.
CA2027337C (en) * 1989-11-10 2001-04-24 Peter Eduard Haferl Nonlinear rgb video signal processing

Also Published As

Publication number Publication date
JPH06125512A (ja) 1994-05-06
PT575824E (pt) 2000-07-31
EP0575824A3 (en) 1995-02-15
CN1082298A (zh) 1994-02-16
DE69327819D1 (de) 2000-03-16
EP0575824B1 (en) 2000-02-09
CN1046074C (zh) 1999-10-27
KR940001702A (ko) 1994-01-11
KR100311767B1 (ko) 2001-12-28
MY110211A (en) 1998-02-28
DE69327819T2 (de) 2000-05-31
EP0575824A2 (en) 1993-12-29
MX9303615A (es) 1993-12-01
JP3050261B2 (ja) 2000-06-12
SG93761A1 (en) 2003-01-21

Similar Documents

Publication Publication Date Title
US6943836B2 (en) Digital-signal-processing circuit, display apparatus using the same and liquid-crystal projector using the same
DE60124215T2 (de) Projektionsanzeigegerät
KR950016276A (ko) 장면적응 영상 개선방법 및 그 회로
ES2096568T3 (es) Un sistema de video dinamico que incluye secciones de tratamiento del contraste automatico y de "extension del blanco".
FR2359560A1 (fr) Amplificateur video avec rayonnement haute frequence supprime
JPH0566501A (ja) 投射型液晶表示装置
JPS61157177A (ja) ガンマ制御装置
EP0780826A3 (en) Driving method of liquid crystal display device
US6476591B2 (en) Power supply device for driving liquid crystal, liquid crystal device and electronic equipment using the same
ES2095881T3 (es) Aparato regulador del tamaño de trama.
US20080259091A1 (en) System and Method for Enhancing the Contrast Ratio of an Image
US20090021458A1 (en) High contrast liquid crystal display
US7365800B2 (en) Method for pre-processing image data
ES2141741T3 (es) Amplificador para un aparato excitador de cinescopio.
US20060164371A1 (en) Liquid crystal display device
KR100330172B1 (ko) Ｌｃｄ프로젝션시스템의 명암대비개선장치
JPS6433534A (en) Display device and driving thereof
KR960009659A (ko) 다중 화상 비디오 신호의 디스플레이 중에 선택적으로 비선형 처리 기능이 억제되는 텔레비전 수상기 및 다중 화상 텔레비전 신호 처리 방법
JPH10307286A (ja) 液晶表示装置およびその調整方法
JPH01239590A (ja) 液晶表示装置
Lee et al. OPO-based compact laser projection display
JPS5994973A (ja) ビデオモニタの上に表示された像を写真フイルムの上に記録する装置
JPH10123485A (ja) 液晶表示装置
KR970007536B1 (ko) 영상기기의 도우밍 방지장치
KR0124730Y1 (ko) 영상표시 기기의 수평사이즈 및 핀쿠션 회로

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 575824

Country of ref document: ES