FR2382141A1 - Recepteur de television dans lequel sont utilisees deux porteuses de son a modulation de frequence - Google Patents

Recepteur de television dans lequel sont utilisees deux porteuses de son a modulation de frequence

Info

Publication number
FR2382141A1
FR2382141A1 FR7805674A FR7805674A FR2382141A1 FR 2382141 A1 FR2382141 A1 FR 2382141A1 FR 7805674 A FR7805674 A FR 7805674A FR 7805674 A FR7805674 A FR 7805674A FR 2382141 A1 FR2382141 A1 FR 2382141A1
Authority
FR
France
Prior art keywords
sound
frequency
television receiver
frequency modulated
modulated sound
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
FR7805674A
Other languages
English (en)
Other versions
FR2382141B1 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2382141A1 publication Critical patent/FR2382141A1/fr
Application granted granted Critical
Publication of FR2382141B1 publication Critical patent/FR2382141B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

Récepteur de télévision dans lequel sont utilisées des première et deuxième porteuses de son à modulation de fréquence et qui est muni d'une partie de fréquence intermédiaire d'image, d'un premier circuit conventionnel de démodulation de son qui est raccordé à ladite partie à travers un détecteur vidéo pour démoduler un premier signal de son qui module en fréquence la première porteuse de son, et d'un deuxième (nouveau) circuit de démodulation de son qui est raccordé directement à ladite partie de fréquence intermédiaire et qui peut démoduler un deuxième signal de son qui module en fréquence la deuxième porteuse de son, et cela même en cas d'une faible amplitude de cette deuxième porteuse de son. Application aux récepteurs de télévision en couleur.
FR7805674A 1977-02-28 1978-02-28 Recepteur de television dans lequel sont utilisees deux porteuses de son a modulation de frequence Granted FR2382141A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7702110A NL7702110A (nl) 1977-02-28 1977-02-28 Televisiesysteem met twee fm geluiddraaggolven.

Publications (2)

Publication Number Publication Date
FR2382141A1 true FR2382141A1 (fr) 1978-09-22
FR2382141B1 FR2382141B1 (fr) 1982-10-01

Family

ID=19828066

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805674A Granted FR2382141A1 (fr) 1977-02-28 1978-02-28 Recepteur de television dans lequel sont utilisees deux porteuses de son a modulation de frequence

Country Status (11)

Country Link
US (1) US4158858A (fr)
JP (1) JPS53107228A (fr)
AU (1) AU510647B2 (fr)
BE (1) BE864358A (fr)
CA (1) CA1114059A (fr)
CH (1) CH639514A5 (fr)
DE (1) DE2806298C2 (fr)
FR (1) FR2382141A1 (fr)
GB (2) GB1575261A (fr)
IT (1) IT1107107B (fr)
NL (1) NL7702110A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161732A (en) * 1980-05-19 1981-12-12 Eiden Kk Stereo demodulator
JPS56162556A (en) * 1980-05-20 1981-12-14 Eiden Kk Stereophonic modulator
JPS56165441A (en) * 1980-05-26 1981-12-19 Eiden Kk Stereo demodulator
GB2133252A (en) * 1982-12-17 1984-07-18 Philips Electronic Associated Television transmitter
US4496979A (en) * 1983-11-22 1985-01-29 Casat Technology, Inc. FM High-fidelity processor
US4652924A (en) * 1984-12-10 1987-03-24 Oak Industries Inc. RF volume control circuit
DE3579234D1 (de) * 1985-06-01 1990-09-20 Itt Ind Gmbh Deutsche Schaltungsanordung zur filterung und demodulation eines mit mindestens einem tonsignal frequenzmodulierten signals.
US5023707A (en) * 1985-12-02 1991-06-11 Media Transference International, Ltd. System for combining multiple audio channels into the baseband video signal and the recovery of the audio channels therefrom
IT8921239A0 (it) * 1989-07-19 1989-07-19 Elettronica Ind Spa Procedimento di radiotrasmissione e di rivelazione di un segnale video con associati almeno due segnali audio, per la modulazione e l'utilizzazione separata di almeno uno di tali segnali audio, e dispositivo demodulatore relativo.
DE10006701C2 (de) * 2000-02-16 2002-04-11 Harman Becker Automotive Sys Empfangseinrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2145803C3 (de) * 1971-09-14 1975-04-24 Blaupunkt Werke Gmbh Verfahren und Fernsehempfänger zur übertragung zweier Fernseh-Tonkanäle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/67 *
EXBK/70 *

Also Published As

Publication number Publication date
US4158858A (en) 1979-06-19
AU3361478A (en) 1979-08-30
AU510647B2 (en) 1980-07-03
GB1575261A (en) 1980-09-17
FR2382141B1 (fr) 1982-10-01
NL7702110A (nl) 1978-08-30
GB1575262A (en) 1980-09-17
BE864358A (fr) 1978-08-28
CA1114059A (fr) 1981-12-08
JPS53107228A (en) 1978-09-19
IT7867385A0 (it) 1978-02-24
CH639514A5 (de) 1983-11-15
IT1107107B (it) 1985-11-18
DE2806298C2 (de) 1983-07-07
DE2806298A1 (de) 1978-08-31

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Legal Events

Date Code Title Description
ST Notification of lapse