ES2043513B1 - Circuito procesador no lineal de video para televisores en color. - Google Patents

Circuito procesador no lineal de video para televisores en color.

Info

Publication number
ES2043513B1
ES2043513B1 ES9101667A ES9101667A ES2043513B1 ES 2043513 B1 ES2043513 B1 ES 2043513B1 ES 9101667 A ES9101667 A ES 9101667A ES 9101667 A ES9101667 A ES 9101667A ES 2043513 B1 ES2043513 B1 ES 2043513B1
Authority
ES
Spain
Prior art keywords
transistor
processing circuit
video processing
stage
pair
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
ES9101667A
Other languages
English (en)
Other versions
ES2043513A1 (es
Inventor
Lucas Anna Ma Mestres
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.)
BERTRAN ELECTRONICA SA
Original Assignee
BERTRAN ELECTRONICA SA
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 BERTRAN ELECTRONICA SA filed Critical BERTRAN ELECTRONICA SA
Priority to ES9101667A priority Critical patent/ES2043513B1/es
Publication of ES2043513A1 publication Critical patent/ES2043513A1/es
Application granted granted Critical
Publication of ES2043513B1 publication Critical patent/ES2043513B1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

CIRCUITO PROCESADOR NO LINEAL DE VIDEO PARA TELEVISORES EN COLOR. COMPRENDE UN PAR DE ETAPAS (1, 2). LA PRIMERA ETAPA (1) COMPRENDE UN TRANSISTOR (Q1) CUYO EMISOR Y COLECTOR ESTAN CONECTADOS A SENDAS RESISTENCIAS (R3, R2), UN PAR DE DIODOS (D1, D2) CONECTADOS EN PARALELO CON LA RESISTENCIA (R2) DE COLECTOR, Y UNA TERCERA RESISTENCIA (R1) Y UNA AUTOINDUCCION (L1) EN SERIE ENTRE SI Y DISPUESTAS EN SERIE CON DIODOS (D1, D2). LA SEGUNDA ETAPA (2) COMPRENDE UN TRANSISTOR (Q2) Y UN PAR DE RESISTENCIAS (R6, R4) CONECTADAS AL COLECTOR Y AL EMISOR DE DICHO TRANSISTOR (Q2), EL CUAL ES DE POLARIDAD CONTRARIA A LA DEL TRANSISTOR (Q1) DE LA PRIMERA ETAPA (1), Y UNA TERCERA RESISTENCIA (R5) Y UN CONDENSADOR (C1) CONECTADOS EN PARALELO A LA RESISTENCIA (R4) DE EMISOR DEL TRANSISTOR (Q2). SE CONSIGUE PARA LAS SEÑALES MAS OSCURAS UNA GANANCIA MAYOR, Y PARA LAS SEÑALES DE BRILLO MEDIO Y ALTO, UNA GANANCIA VARIABLE EN FUNCION DE LA FRECUENCIA. SE SIMPLIFICA EL CIRCUITO Y SE REDUCE EL NUMERO DE COMPONENTES.
ES9101667A 1991-07-17 1991-07-17 Circuito procesador no lineal de video para televisores en color. Expired - Lifetime ES2043513B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9101667A ES2043513B1 (es) 1991-07-17 1991-07-17 Circuito procesador no lineal de video para televisores en color.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9101667A ES2043513B1 (es) 1991-07-17 1991-07-17 Circuito procesador no lineal de video para televisores en color.

Publications (2)

Publication Number Publication Date
ES2043513A1 ES2043513A1 (es) 1993-12-16
ES2043513B1 true ES2043513B1 (es) 1994-08-01

Family

ID=8273033

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9101667A Expired - Lifetime ES2043513B1 (es) 1991-07-17 1991-07-17 Circuito procesador no lineal de video para televisores en color.

Country Status (1)

Country Link
ES (1) ES2043513B1 (es)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118007B (en) * 1982-03-31 1985-11-13 Rca Corp Adjustable coring circuit
CA1204853A (en) * 1983-01-07 1986-05-20 Joichi Sato Gamma compensating circuit
DE3629409C2 (de) * 1986-08-29 1994-02-17 Agfa Gevaert Ag Verfahren und Vorrichtung zur Kontrastbewertung bei der elektronischen Bildverarbeitung
JPH02183673A (ja) * 1989-01-10 1990-07-18 Matsushita Electric Ind Co Ltd 非直線増幅回路
US5099154A (en) * 1989-08-25 1992-03-24 Thomson Consumer Electronics, Inc. Amplifier arrangement for producing a controllable non-linear transfer characteristic useful for improving the contrast of an image
US5003394A (en) * 1989-08-25 1991-03-26 Rca Licensing Corporation Dynamic video system including automatic contrast and "white-stretch" processing sections

Also Published As

Publication number Publication date
ES2043513A1 (es) 1993-12-16

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Legal Events

Date Code Title Description
FA2A Application withdrawn

Effective date: 19950211