ES470229A1 - Un sistema de amplificacion para senales de video y audiofrecuencia - Google Patents

Un sistema de amplificacion para senales de video y audiofrecuencia

Info

Publication number
ES470229A1
ES470229A1 ES470229A ES470229A ES470229A1 ES 470229 A1 ES470229 A1 ES 470229A1 ES 470229 A ES470229 A ES 470229A ES 470229 A ES470229 A ES 470229A ES 470229 A1 ES470229 A1 ES 470229A1
Authority
ES
Spain
Prior art keywords
video
audio frequency
frequency signals
amplification system
common amplification
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
ES470229A
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.)
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 ES470229A1 publication Critical patent/ES470229A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

Un sistema de amplificación para señales de video y audiofrecuencia, destinado a alimentar un amplificador de potencia de vía única y que comprende: un primer y un segundo moduladores que modulan cada uno una señal de frecuencia intermedia distinta, respectivamente, para dicha señal de video y dicha señal de audiofrecuencia, y un dispositivo de transposición de las señales de frecuencia intermedia moduladas, caracterizado porque dicho dispositivo de transposición comprende un primer y un segundo mezcladores alimentados en paralelo en una primera entrada por un generador de señal de transposición común y que reciben cada uno en su segunda entrada respectivamente, la señal de salida del primer modulador a través de la entrada principal y la salida de un dispositivo compensador, y la señal de salida del segundo modulador a través de un dispositivo de acoplamiento que alimenta igualmente una entrada auxiliar del dispositivo compensador, siendo alimentado dicho amplificador de potencia a travésde un dispositivo de acoplamiento amplificador que tiene dos entradas respectivamente acopladas a las salidas de los primer y segundo mezcladores.
ES470229A 1977-05-27 1978-05-26 Un sistema de amplificacion para senales de video y audiofrecuencia Expired ES470229A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7716336A FR2392540A1 (fr) 1977-05-27 1977-05-27 Systeme d'amplification des signaux video et audiofrequence, et emetteur de television utilisant un tel systeme

Publications (1)

Publication Number Publication Date
ES470229A1 true ES470229A1 (es) 1979-02-01

Family

ID=9191382

Family Applications (1)

Application Number Title Priority Date Filing Date
ES470229A Expired ES470229A1 (es) 1977-05-27 1978-05-26 Un sistema de amplificacion para senales de video y audiofrecuencia

Country Status (9)

Country Link
US (1) US4168511A (es)
JP (1) JPS53148224A (es)
AT (1) AT370935B (es)
DE (1) DE2823013C2 (es)
ES (1) ES470229A1 (es)
FR (1) FR2392540A1 (es)
GB (1) GB1586938A (es)
NL (1) NL7805622A (es)
SE (1) SE427607B (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437117A1 (fr) * 1978-09-22 1980-04-18 Lgt Lab Gen Telecomm Systeme de transmission en modulation d'amplitude a haute performance et emetteur et reemetteur de television comportant un tel systeme
FR2466155A1 (fr) * 1979-09-19 1981-03-27 Lgt Lab Gen Telecomm Dispositif d'amplification de puissance de signaux modules en amplitude, a haute performance, et emetteur et reemetteur de television comportant un tel dispositif
JPS57193186A (en) * 1981-05-22 1982-11-27 Nec Corp Television broadcasting device
US4504861A (en) * 1982-02-18 1985-03-12 Emcee A Division Of Electronics, Missiles & Communications, Inc. Portable TV transmitter
US4491871A (en) * 1982-12-06 1985-01-01 Rca Corporation Audio-visual diplexed television transmitter in which the aural signal can be multiplexed without switching
DE3306562A1 (de) * 1983-02-25 1984-08-30 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Fernsehsystem mit intercarrierton-empfaenger
FR2553947B1 (fr) * 1983-10-21 1985-12-13 Lgt Lab Gen Telecomm Dispositif de precorrection automatique des non-linearites dans une chaine d'amplification de puissance et emetteur de television comportant un tel dispositif
FR2558673B1 (fr) * 1984-01-20 1986-04-25 Thomson Csf Emetteur de television comportant un klystron commun pour l'image et le son
FR2735629A1 (fr) * 1995-06-14 1996-12-20 Philips Electronics Nv Modulateur d'amplitude
GB9521345D0 (en) * 1995-10-18 1995-12-20 Plessey Semiconductors Ltd Video modulator arrangements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901599A (en) * 1954-07-16 1959-08-25 Rca Corp Amplitude-modulated radio transmitter combining two constant amplitude phase modulated signals
JPS4938293B1 (es) * 1969-06-20 1974-10-16
DE2140851B2 (de) * 1971-08-14 1976-03-11 Rohde & Schwarz, 8000 München Schaltung zum erzeugen einer vorbestimmten, zur kompensation der nichtlinearitaeten eines nachgeschalteten verstaerkers dienenden und hierzu komplementaeren vorverzerrung eines hochfrequenz-, insbesondere eines fernseh- signals
FR2312152A1 (fr) * 1975-05-23 1976-12-17 Lgt Lab Gen Telecomm Generateur de produits de non linearite et precorrecteur de systeme de transmission utilisant un tel generateur

Also Published As

Publication number Publication date
JPS53148224A (en) 1978-12-23
DE2823013A1 (de) 1978-12-07
AT370935B (de) 1983-05-10
US4168511A (en) 1979-09-18
SE7806021L (sv) 1978-11-28
SE427607B (sv) 1983-04-18
DE2823013C2 (de) 1982-12-23
FR2392540B1 (es) 1980-01-04
ATA385878A (de) 1982-09-15
FR2392540A1 (fr) 1978-12-22
GB1586938A (en) 1981-03-25
NL7805622A (nl) 1978-11-29

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980302