ES2071295T3 - Circuito de seguridad para un receptor de television. - Google Patents

Circuito de seguridad para un receptor de television.

Info

Publication number
ES2071295T3
ES2071295T3 ES91902989T ES91902989T ES2071295T3 ES 2071295 T3 ES2071295 T3 ES 2071295T3 ES 91902989 T ES91902989 T ES 91902989T ES 91902989 T ES91902989 T ES 91902989T ES 2071295 T3 ES2071295 T3 ES 2071295T3
Authority
ES
Spain
Prior art keywords
transformer
switch
signal
coupled
feedback signal
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
ES91902989T
Other languages
English (en)
Inventor
Jean Claude Favreau
Friedrich Meinertz
Chon Seng Oh
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.)
Vantiva SA
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics SA
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
Priority claimed from GB898928999A external-priority patent/GB8928999D0/en
Priority claimed from DE3943254A external-priority patent/DE3943254A1/de
Application filed by Thomson Consumer Electronics SA, Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics SA
Application granted granted Critical
Publication of ES2071295T3 publication Critical patent/ES2071295T3/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
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Television Receiver Circuits (AREA)

Abstract

SE ACOPLA UN PRIMER TRANSFORMADOR A UNA HORQUILLA DE DEFLEXION ACOPLADA A UNA FUENTE DE TENSION SECUNDARIA DERIVADA PARA CONDUCIR UNA CARGA, POR EJ: PARA GENERAR UNA TENSION EXAGERADA. UN INTERRUPTOR DE APAGADO/ENCENDIDO RESPONDER A UNA SEÑAL DE APAGADO/ENCENDIDO. UN SEGUNDO TRANSFORMADOR TIENE UNA BOBINA PRIMARIA ACOPLADA AL INTERRUPTOR Y A UNA FUENTE DE TENSION Y TIENE UNA BOBINA SECUNDARIA ACOPLADA AL PRIMER TRANSFORMADOR. UN PRIMER CIRCUITO DE MUESTREO GENERA UNA PRIMERA SEÑAL DE REALIMENTACION INDICATIVA DEL FLUJO DE CORRIENTE DESDE LA BOBINA SECUNDARIA AL PRIMER TRANSFORMADOR. UN PRIMER CIRCUITO DE SEGURIDAD RESPONDE A LA PRIMERA SEÑAL DE REALIMENTACION, CONTROLA EL EFECTO DE LA SEÑAL DE ENCENDIDO/APAGADO EN EL INTERRUPTOR CUANDO LA CORRIENTE QUE FLUYO DESDE LA BOBINA SECUNDARIA AL PRIMER TRANSFORMADOR EXCEDE DE CIERTO UMBRAL, AL LIMITAR EL TIEMPO DE ENCENDIDO DEL INTERRUPTOR PARA LIMITAR EL VALOR MAXIMO DE LA CORRIENTE. UN SEGUNDO CIRCUITO DE MUESTREO GENERA UNA SEGUNDA SEÑAL DE REALIMENTACION INDICATIVA DE LA TENSION EXAGERADA. UN SEGUNDO CIRCUITO DE SEGURIDAD RESPONDE A LA SEGUNDA SEÑAL DE REALIMENTACION, CONTROLA EL EFECTO DE LA SEÑAL DE ENCENDIDO/APAGADO EN EL INTERRUPTOR CUANDO EL VOLTAGE EXAGERADO EXCEDE DE CIERTO UMBRAL, POR EJ: DEBIDO AL ARCO INTERNO DEL TUBO DE PINTURA CONDUCIDO POR EL INTERRUPTOR Y GENERA UNA TERCERA SEÑAL DE REALIMENTACION. UNO DE LOS CIRCUITOS PRIMERO Y SEGUNDO, RESPONDE TAMBIEN A LA TERCERA SEÑAL DE REALIMENTACION. EL INTERRUPTOR, EL TRANSFORMADOR Y LA HORQUILLA DE DEFLEXION PUEDEN ACOPLARSE EN UNA CONFIGURACION WESSEL.
ES91902989T 1989-12-22 1990-12-21 Circuito de seguridad para un receptor de television. Expired - Lifetime ES2071295T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898928999A GB8928999D0 (en) 1989-12-22 1989-12-22 Switched mode power supply and deflection system including hold and reset circuit
DE3943254A DE3943254A1 (de) 1989-12-29 1989-12-29 Schaltung fuer die zeilenablenkung und die betriebsspannungserzeugung in einem fernsehempfaenger

Publications (1)

Publication Number Publication Date
ES2071295T3 true ES2071295T3 (es) 1995-06-16

Family

ID=25888604

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91902989T Expired - Lifetime ES2071295T3 (es) 1989-12-22 1990-12-21 Circuito de seguridad para un receptor de television.

Country Status (9)

Country Link
US (1) US5353187A (es)
EP (1) EP0460201B1 (es)
JP (1) JP2808046B2 (es)
KR (1) KR0173686B1 (es)
DE (1) DE69017438T2 (es)
ES (1) ES2071295T3 (es)
MY (1) MY105357A (es)
TR (1) TR26564A (es)
WO (1) WO1991010317A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488165U (es) * 1990-12-18 1992-07-30
JP3236319B2 (ja) 1991-09-17 2001-12-10 アイワ株式会社 エックス線保護回路
KR0182921B1 (ko) * 1996-05-02 1999-04-15 김광호 발진 전압 안정화 회로를 구비한 디스플레이 장치
US5764002A (en) * 1996-07-01 1998-06-09 U.S. Philips Corporation Over-current protection circuit for use in television horizontal deflection circuits
US7527638B2 (en) 2003-12-16 2009-05-05 Depuy Spine, Inc. Methods and devices for minimally invasive spinal fixation element placement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO129067B (es) * 1972-10-04 1974-02-18 Wessel P Lorentz
US3979640A (en) * 1975-07-30 1976-09-07 Gte Sylvania Incorporated Horizontal deflection system
US4042858A (en) * 1976-07-08 1977-08-16 Gte Sylvania Incorporated Television receiver protection circuit
US4343028A (en) * 1981-01-21 1982-08-03 Rca Corporation Television receiver high voltage generator protection circuit
GB8805757D0 (en) * 1988-03-10 1988-04-07 Rca Licensing Corp Protection circuit for horizontal deflection circuits
US4965496A (en) * 1988-03-10 1990-10-23 Rca Licensing Corporation Protection arrangement of a deflection circuit

Also Published As

Publication number Publication date
DE69017438T2 (de) 1995-07-20
WO1991010317A1 (en) 1991-07-11
JPH04504946A (ja) 1992-08-27
MY105357A (en) 1994-09-30
JP2808046B2 (ja) 1998-10-08
KR0173686B1 (ko) 1999-03-20
TR26564A (tr) 1995-03-15
EP0460201B1 (en) 1995-03-01
EP0460201A1 (en) 1991-12-11
DE69017438D1 (de) 1995-04-06
US5353187A (en) 1994-10-04

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