FR2368828A1 - Dispositif d'accord perfectionne pour recepteur de television - Google Patents

Dispositif d'accord perfectionne pour recepteur de television

Info

Publication number
FR2368828A1
FR2368828A1 FR7731352A FR7731352A FR2368828A1 FR 2368828 A1 FR2368828 A1 FR 2368828A1 FR 7731352 A FR7731352 A FR 7731352A FR 7731352 A FR7731352 A FR 7731352A FR 2368828 A1 FR2368828 A1 FR 2368828A1
Authority
FR
France
Prior art keywords
television receiver
perfected
tuning device
mixer
driven
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
FR7731352A
Other languages
English (en)
Other versions
FR2368828B1 (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
Application filed by Indesit Industria Elettrodomestici Italiana SpA filed Critical Indesit Industria Elettrodomestici Italiana SpA
Publication of FR2368828A1 publication Critical patent/FR2368828A1/fr
Application granted granted Critical
Publication of FR2368828B1 publication Critical patent/FR2368828B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (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 fondamental de l'oscillateur 14 couvre la bande VHF, et son harmonique d'ordre 2 couvre la bande UHF. Application à l'accord des récepteurs de télévision.
FR7731352A 1976-10-25 1977-10-18 Dispositif d'accord perfectionne pour recepteur de television Granted FR2368828A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6956576A IT1071537B (it) 1976-10-25 1976-10-25 Dispositivo per la sintonizzazione di un televisione

Publications (2)

Publication Number Publication Date
FR2368828A1 true FR2368828A1 (fr) 1978-05-19
FR2368828B1 FR2368828B1 (fr) 1984-02-17

Family

ID=11312397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731352A Granted FR2368828A1 (fr) 1976-10-25 1977-10-18 Dispositif d'accord perfectionne pour recepteur de television

Country Status (4)

Country Link
DE (1) DE2747691A1 (fr)
FR (1) FR2368828A1 (fr)
GB (1) GB1584737A (fr)
IT (1) IT1071537B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633384A1 (de) * 1986-10-01 1988-04-14 Telefunken Electronic Gmbh Fernsehtuner fuer drei unterschiedliche frequenzbereiche
EP0883238A2 (fr) * 1997-06-03 1998-12-09 Robert Bosch Gmbh Récepteur pour différentes bandes de fréquence

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703406A1 (de) * 1987-02-05 1988-08-18 Philips Patentverwaltung Kombinierter zf-saug- und parallelkreis fuer einen fernseh-tuner
DE4132907A1 (de) * 1991-10-04 1993-04-08 Thomson Brandt Gmbh Filteranordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787703A (en) * 1952-03-03 1957-04-02 Philips Corp Receiver for two radio frequency bands
FR1496827A (fr) * 1966-08-26 1967-10-06 Radiotechnique Coprim Rtc Perfectionnements aux récepteurs de télévision
US3624514A (en) * 1970-01-09 1971-11-30 Philips Corp Tuning circuit having common tuning element for three frequency ranges and self-oscillating mixer using same
US3801915A (en) * 1971-03-04 1974-04-02 Magnavox Co Method and apparatus for converting electrical signals
US3939429A (en) * 1973-07-07 1976-02-17 U.S. Philips Corporation Tunable high frequency input circuit for a television receiver that tunes both VHF and UHF channels and can be readily integrated

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787703A (en) * 1952-03-03 1957-04-02 Philips Corp Receiver for two radio frequency bands
FR1496827A (fr) * 1966-08-26 1967-10-06 Radiotechnique Coprim Rtc Perfectionnements aux récepteurs de télévision
US3624514A (en) * 1970-01-09 1971-11-30 Philips Corp Tuning circuit having common tuning element for three frequency ranges and self-oscillating mixer using same
US3801915A (en) * 1971-03-04 1974-04-02 Magnavox Co Method and apparatus for converting electrical signals
US3939429A (en) * 1973-07-07 1976-02-17 U.S. Philips Corporation Tunable high frequency input circuit for a television receiver that tunes both VHF and UHF channels and can be readily integrated

Non-Patent Citations (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633384A1 (de) * 1986-10-01 1988-04-14 Telefunken Electronic Gmbh Fernsehtuner fuer drei unterschiedliche frequenzbereiche
EP0883238A2 (fr) * 1997-06-03 1998-12-09 Robert Bosch Gmbh Récepteur pour différentes bandes de fréquence
EP0883238A3 (fr) * 1997-06-03 1999-01-20 Robert Bosch Gmbh Récepteur pour différentes bandes de fréquence

Also Published As

Publication number Publication date
GB1584737A (en) 1981-02-18
FR2368828B1 (fr) 1984-02-17
DE2747691A1 (de) 1978-04-27
IT1071537B (it) 1985-04-10

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Legal Events

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