FR2451685A1 - Dispositif automatique de coupure d'un recepteur de television en l'absence d'un signal - Google Patents

Dispositif automatique de coupure d'un recepteur de television en l'absence d'un signal

Info

Publication number
FR2451685A1
FR2451685A1 FR8005487A FR8005487A FR2451685A1 FR 2451685 A1 FR2451685 A1 FR 2451685A1 FR 8005487 A FR8005487 A FR 8005487A FR 8005487 A FR8005487 A FR 8005487A FR 2451685 A1 FR2451685 A1 FR 2451685A1
Authority
FR
France
Prior art keywords
delay line
capacitor
saturation
receiver
controlled
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.)
Withdrawn
Application number
FR8005487A
Other languages
English (en)
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.)
ZAKLADY TELEWIZYJNE UNITRA POL
Original Assignee
ZAKLADY TELEWIZYJNE UNITRA POL
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 ZAKLADY TELEWIZYJNE UNITRA POL filed Critical ZAKLADY TELEWIZYJNE UNITRA POL
Publication of FR2451685A1 publication Critical patent/FR2451685A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

LE DISPOSITIF COMPORTE UN ECHANTILLONNEUR SENSIBLE A LA COINCIDENCE D'UN SIGNAL DE NIVEAU DE NOIR ET D'UNE IMPULSION DE RETOUR DE BALAYAGE SUIVI D'UN INTEGRATEUR ET D'UN COMPARATEUR A DEUX NIVEAUX PRENANT UN NIVEAU BAS EN REPONSE AU SIGNAL DE NIVEAU DE NOIR INTEGRE, ET UN INTERRUPTEUR DANS L'ALIMENTATION DU RECEPTEUR. ENTRE COMPARATEUR ET INTERRUPTEUR EST INSERE UN CIRCUIT RETARDATEUR AVEC UN TRANSISTOR T AVEC SON ESPACE EMETTEUR COLLECTEUR EN SERIE ENTRE UNE SOURCE DE TENSION ET L'INTERRUPTEUR. LA BASE DU TRANSISTOR EST RELIEE A LA MASSE PAR UNE RESISTANCE R2 ET UNE CAPACITE C1 SERIE, ET A LA TENSION E VENANT DU COMPARATEUR PAR UNE RESISTANCE R1 ET UNE DIODE EN PARALLELE D1. LA CONSTANTE DE TEMPS R1 R2 C1 EST DE L'ORDRE DE 10 SECONDES, ET JOUE LORSQUE LE NIVEAU DE E EST HAUT, CORRESPONDANT A L'ABSENCE DE SIGNAL RECU, POUR COUPER LE RECEPTEUR, TANDIS QUE R1C1 DE L'ORDRE DE 110 DE SECONDE, JOUE AU RETABLISSEMENT DU SIGNAL RECU.
FR8005487A 1979-03-13 1980-03-12 Dispositif automatique de coupure d'un recepteur de television en l'absence d'un signal Withdrawn FR2451685A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL21408979A PL122151B1 (en) 1979-03-13 1979-03-13 Method of automatically turning off a television set in the case when none video sigal is transmitted and system thereforemnika vo vremja otsutstvija televizionnogo signala i sistema dlja avtomaticheskogo vykluchenija televizionnogo priemnika vo vremja otsutstvija televizionnogo signala

Publications (1)

Publication Number Publication Date
FR2451685A1 true FR2451685A1 (fr) 1980-10-10

Family

ID=19995072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005487A Withdrawn FR2451685A1 (fr) 1979-03-13 1980-03-12 Dispositif automatique de coupure d'un recepteur de television en l'absence d'un signal

Country Status (3)

Country Link
DE (1) DE3008052A1 (fr)
FR (1) FR2451685A1 (fr)
PL (1) PL122151B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9217968U1 (de) * 1992-01-31 1993-04-29 Siemens Nixdorf Informationssysteme AG, 4790 Paderborn Röhrenbildschirmgerät

Also Published As

Publication number Publication date
DE3008052A1 (de) 1980-09-18
PL214089A1 (fr) 1980-11-03
PL122151B1 (en) 1982-06-30

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Legal Events

Date Code Title Description
ST Notification of lapse