FR2371821A1 - Dispositif d'accord pour recepteur de television - Google Patents

Dispositif d'accord pour recepteur de television

Info

Publication number
FR2371821A1
FR2371821A1 FR7731350A FR7731350A FR2371821A1 FR 2371821 A1 FR2371821 A1 FR 2371821A1 FR 7731350 A FR7731350 A FR 7731350A FR 7731350 A FR7731350 A FR 7731350A FR 2371821 A1 FR2371821 A1 FR 2371821A1
Authority
FR
France
Prior art keywords
television receiver
mixer
driven
tuning device
input stage
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.)
Granted
Application number
FR7731350A
Other languages
English (en)
Other versions
FR2371821B1 (fr
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.)
Indesit Industria Elettrodomestici Italiana SpA
Original Assignee
Indesit Industria Elettrodomestici Italiana SpA
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 IT6956376A external-priority patent/IT1071536B/it
Priority claimed from IT6746277A external-priority patent/IT1116350B/it
Application filed by Indesit Industria Elettrodomestici Italiana SpA filed Critical Indesit Industria Elettrodomestici Italiana SpA
Publication of FR2371821A1 publication Critical patent/FR2371821A1/fr
Application granted granted Critical
Publication of FR2371821B1 publication Critical patent/FR2371821B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/246—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1218—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the generator being of the balanced type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

L'invention concerne les récepteurs de télévision. L'étage d'entrée haute fréquence d'un récepteur de télévision comprend essentiellement un circuit de régulation de niveau 2, trois amplificateurs 4, 5, 6 correspondant à des bandes de réception différentes, un premier melangeur 13 attaqué par un oscillateur à fréquence variable 14, et un second mélangeur 15 attaqué par un oscillateur à fréquence fixe 16. Le double changement de fréquence permet d'obtenir un étage d'entrée universel, en réduisant au minimum les composants qui fonctionnent à fréquence variable. Application à l'accord des récepteurs de télévision.
FR7731350A 1976-10-25 1977-10-18 Dispositif d'accord pour recepteur de television Granted FR2371821A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6956376A IT1071536B (it) 1976-10-25 1976-10-25 Dispositivo per la sintonizzazione di un televisione
IT6746277A IT1116350B (it) 1977-03-03 1977-03-03 Dispositivo per la sintonizzazione di un televisore

Publications (2)

Publication Number Publication Date
FR2371821A1 true FR2371821A1 (fr) 1978-06-16
FR2371821B1 FR2371821B1 (fr) 1983-11-04

Family

ID=26329779

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731350A Granted FR2371821A1 (fr) 1976-10-25 1977-10-18 Dispositif d'accord pour recepteur de television

Country Status (3)

Country Link
DE (1) DE2746931A1 (fr)
FR (1) FR2371821A1 (fr)
GB (1) GB1584738A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121740A (en) * 1979-03-14 1980-09-19 Alps Electric Co Ltd Television voice receiving tuner
US4419768A (en) * 1980-09-30 1983-12-06 Matsushita Electric Industrial Company, Limited Wideband tuner for VHF, CATV and UHF television signals
US4408348A (en) * 1981-08-19 1983-10-04 Rca Corporation Multiband tuning system for a television receiver
US4397037A (en) * 1981-08-19 1983-08-02 Rca Corporation Diplexer for television tuning systems
US4480338A (en) * 1982-03-01 1984-10-30 Zenith Electronics Corporation Lowpass-highpass electronic switch
US4418427A (en) 1982-03-30 1983-11-29 Rca Corporation Tuning system for a multi-band television receiver
US4418428A (en) 1982-03-30 1983-11-29 Rca Corporation Tuning system for a multi-band television receiver
US4476583A (en) * 1983-02-28 1984-10-09 Rca Corporation Electronic tracking for tuners
DE3538921A1 (de) * 1985-11-02 1987-05-14 Telefunken Electronic Gmbh Fernsehtuner
DE3633383A1 (de) * 1985-11-02 1988-04-14 Telefunken Electronic Gmbh Fernsehtuner
JP2563401B2 (ja) * 1987-11-30 1996-12-11 松下電器産業株式会社 受信装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142631B (de) * 1959-07-15 1963-01-24 Loewe Opta Ag Fernsehempfangsschaltung
DE1261903B (de) * 1965-03-22 1968-02-29 Hartmut Roland Traunmueller Schaltungsanordnung eines Doppelueberlagerungsempfaengers fuer Lang-, Mittel- und Kurzwelle
GB1108326A (en) * 1964-07-28 1968-04-03 Siemens Ag Improvements in or relating to wide band amplifiers
US3614621A (en) * 1969-08-08 1971-10-19 Motorola Inc Multifrequency receiver with automatic channel selection and priority channel monitoring
FR2080065A5 (fr) * 1970-02-23 1971-11-12 Philips Nv
FR1604508A (fr) * 1962-07-12 1971-11-29
US3801915A (en) * 1971-03-04 1974-04-02 Magnavox Co Method and apparatus for converting electrical signals
DE2313962A1 (de) * 1973-03-21 1974-10-03 Philips Patentverwaltung Schaltungsanordnung fuer die hf-eingangsstufe fuer ein geraet der elektrischen nachrichtentechnik, insbesondere fuer fernsehempfaenger
FR2264425A1 (fr) * 1974-03-16 1975-10-10 Philips Nv
DE2503785A1 (de) * 1975-01-30 1976-08-05 Licentia Gmbh Abstimmbarer resonanzkreis, insbesondere lambda/2-leitungskreis fuer wenigstens zwei frequenzbereiche
DE2537831A1 (de) * 1975-08-26 1977-05-12 Licentia Gmbh Mittels kapazitaetsdioden elektronisch durchstimmbares abstimmaggregat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE841295C (de) * 1950-06-10 1952-06-13 Schaub Appbau Ges M B H G Verfahren zum wahlweisen UEberlagerungsempfang frequenz- oder amplitudenmodulierter Schwingungen im gleichen Geraet
NL7007170A (fr) * 1970-05-16 1971-11-18
DE2334570B1 (de) * 1973-07-07 1975-03-06 Philips Patentverwaltung Abstimmbare Hochfrequenz-Eingangsschaltungsanordnung fuer einen Fernsehempfaenger

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142631B (de) * 1959-07-15 1963-01-24 Loewe Opta Ag Fernsehempfangsschaltung
FR1604508A (fr) * 1962-07-12 1971-11-29
GB1108326A (en) * 1964-07-28 1968-04-03 Siemens Ag Improvements in or relating to wide band amplifiers
DE1261903B (de) * 1965-03-22 1968-02-29 Hartmut Roland Traunmueller Schaltungsanordnung eines Doppelueberlagerungsempfaengers fuer Lang-, Mittel- und Kurzwelle
US3614621A (en) * 1969-08-08 1971-10-19 Motorola Inc Multifrequency receiver with automatic channel selection and priority channel monitoring
FR2080065A5 (fr) * 1970-02-23 1971-11-12 Philips Nv
US3801915A (en) * 1971-03-04 1974-04-02 Magnavox Co Method and apparatus for converting electrical signals
DE2313962A1 (de) * 1973-03-21 1974-10-03 Philips Patentverwaltung Schaltungsanordnung fuer die hf-eingangsstufe fuer ein geraet der elektrischen nachrichtentechnik, insbesondere fuer fernsehempfaenger
FR2264425A1 (fr) * 1974-03-16 1975-10-10 Philips Nv
DE2503785A1 (de) * 1975-01-30 1976-08-05 Licentia Gmbh Abstimmbarer resonanzkreis, insbesondere lambda/2-leitungskreis fuer wenigstens zwei frequenzbereiche
DE2537831A1 (de) * 1975-08-26 1977-05-12 Licentia Gmbh Mittels kapazitaetsdioden elektronisch durchstimmbares abstimmaggregat

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
EXBK/73 *
EXBK/74 *
EXBK/75 *
EXRV/76 *

Also Published As

Publication number Publication date
GB1584738A (en) 1981-02-18
FR2371821B1 (fr) 1983-11-04
DE2746931A1 (de) 1978-04-27

Similar Documents

Publication Publication Date Title
FR2371821A1 (fr) Dispositif d'accord pour recepteur de television
ES415763A1 (es) Perfeccionamientos introducidos en un sistema de televisionde abonados.
JPS5298408A (en) Mixer circuit
US2608648A (en) Highly selective radio receiver
GB2000926A (en) Channel Selector for Television Receiver
FR2368827A1 (fr) Dispositif accordable pour recepteur de television
US4475090A (en) Noise generator having variable bandwidth and center frequency
US2747084A (en) Variable band width intermediate frequency system
US2364863A (en) Heterodyne eliminator
FR2440670A1 (fr) Amplificateur de signal d'index pour un recepteur de television a index de faisceau
JPS5362916A (en) Am tuner circuit
SU389606A1 (ru) УСТРОЙСТВО дл ПРИЕМА ЧАСТОТНО-МОДУЛИРОВАННЫХ
JPS543451A (en) High frequency amplifying device
SU568190A1 (ru) Устройство дл компенсации частотного сдвига в каналах св зи
SU414697A1 (ru) Следящий фильтр
SU853799A1 (ru) Устройство дл подавлени импульсныхпОМЕХ пРи пРиЕМЕ узКОпОлОСНыХ чАС-TOTHO-МОдулиРОВАННыХ СигНАлОВ
JPS546401A (en) Variable tuning circuit
SU123248A1 (ru) Способ уменьшени времени анализа спектра звукового сигнала
JPS5478053A (en) Filter circuit
JPS52111321A (en) Receiver for static picture
JPS5526737A (en) Direct repeater
SU404181A1 (ru) Панорамный приемник с автоматической регулировкой усиления
US1460439A (en) Interference preventer
JPS5647133A (en) Broad-band receiving circuit
WO1979000570A1 (fr) Recepteur radio a recherche d'accord electronique

Legal Events

Date Code Title Description
CA Change of address
TP Transmission of property
ST Notification of lapse