ES8302394A1 - "dispositivo de limitacion de una senal de luminancia, utilizable especialmente en un emisor de television". - Google Patents

"dispositivo de limitacion de una senal de luminancia, utilizable especialmente en un emisor de television".

Info

Publication number
ES8302394A1
ES8302394A1 ES508974A ES508974A ES8302394A1 ES 8302394 A1 ES8302394 A1 ES 8302394A1 ES 508974 A ES508974 A ES 508974A ES 508974 A ES508974 A ES 508974A ES 8302394 A1 ES8302394 A1 ES 8302394A1
Authority
ES
Spain
Prior art keywords
luminance signal
amplifier
decreasing
case
threshold
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
Application number
ES508974A
Other languages
English (en)
Other versions
ES508974A0 (es
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of ES8302394A1 publication Critical patent/ES8302394A1/es
Publication of ES508974A0 publication Critical patent/ES508974A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
    • H03G11/02—Limiting amplitude; Limiting rate of change of amplitude by means of diodes
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Receiver Circuits (AREA)
  • Details Of Aerials (AREA)
  • Burglar Alarm Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Picture Signal Circuits (AREA)

Abstract

DISPOSITIVO PARA LA LIMITACION DE UNA SEÑAL DE LUMINANCIA, DESTINADO ESPECIALMENTE PARA PROTEGER LOS PASOS DE POTENCIAL DE UN EMISOR DE TELEVISION, MONOCROMATICO O DE COLOR, CONTRA LAS SOBRECARGAS, EN CASO DE MODULACION POSITIVA, Y PARA EVITAR LA PERTURBACION EN LA TRANSMISION DEL SONIDO EN FRECUENCIA MODULADA, EN CASO DE MOLULACION NEGATIVA. CONSTA DE UN DESCRESTADOR FORMADO POR UN DIODO (5) Y UNA RESISTENCIA (R ), EL CUAL SUPRIME LA SEÑAL DE LUMINANCIA POR ENCIMA DE UN VALOR DE UMBRAL DETERMINADO; DE MEDIOS REGULADORES (2) DEL UMBRAL DE DECRESTADO; Y DE UN AMPLIFICADOR (14) CUYA GANANCIA AUMENTA CUANDO LA AMPLITUD DE LA SEÑAL ALCANZA EL UMBRAL DE DESCRESTADO, ESTANDO CONSTITUIDO POR UN AMPLIFICADOR OPERACIONAL (3) Y POR VARIAS RESISTENCIAS (R , R , R ), Y SITUADO AGUAS ARRIBA DEL DESCRESTADOR.
ES508974A 1981-01-23 1982-01-22 "dispositivo de limitacion de una senal de luminancia, utilizable especialmente en un emisor de television". Granted ES508974A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8101290A FR2498859A1 (fr) 1981-01-23 1981-01-23 Dispositif de limitation du signal de luminance et emetteur de television comportant un tel dispositif

Publications (2)

Publication Number Publication Date
ES8302394A1 true ES8302394A1 (es) 1982-12-16
ES508974A0 ES508974A0 (es) 1982-12-16

Family

ID=9254456

Family Applications (1)

Application Number Title Priority Date Filing Date
ES508974A Granted ES508974A0 (es) 1981-01-23 1982-01-22 "dispositivo de limitacion de una senal de luminancia, utilizable especialmente en un emisor de television".

Country Status (6)

Country Link
EP (1) EP0057117B1 (es)
AT (1) ATE13123T1 (es)
CA (1) CA1196089A (es)
DE (1) DE3263320D1 (es)
ES (1) ES508974A0 (es)
FR (1) FR2498859A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8680911B2 (en) * 2011-03-08 2014-03-25 Honeywell International Inc. High-linearity signal-processing amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393369A (en) * 1965-10-22 1968-07-16 Electronic Associates Feedback limiter circuit having voltage gain amplifier
DE2048045A1 (de) * 1970-09-30 1972-04-06 Rohde & Schwarz Schaltung zum Begrenzen des frequenzmässig unterhalb des Chrominanzanteiles liegenden Luminanzanteiles eines Farbfernsehsignales auf einen vorbestimmten Soll-Weisswert

Also Published As

Publication number Publication date
EP0057117A3 (en) 1982-08-25
FR2498859A1 (fr) 1982-07-30
DE3263320D1 (en) 1985-06-05
CA1196089A (fr) 1985-10-29
ES508974A0 (es) 1982-12-16
ATE13123T1 (de) 1985-05-15
EP0057117A2 (fr) 1982-08-04
EP0057117B1 (fr) 1985-05-02
FR2498859B1 (es) 1984-02-24

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001