FR2379192A1 - Procede et dispositif de reduction des perturbations par canaux adjacents - Google Patents

Procede et dispositif de reduction des perturbations par canaux adjacents

Info

Publication number
FR2379192A1
FR2379192A1 FR7802334A FR7802334A FR2379192A1 FR 2379192 A1 FR2379192 A1 FR 2379192A1 FR 7802334 A FR7802334 A FR 7802334A FR 7802334 A FR7802334 A FR 7802334A FR 2379192 A1 FR2379192 A1 FR 2379192A1
Authority
FR
France
Prior art keywords
reception
channel
adjacent channels
frequency response
application
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
FR7802334A
Other languages
English (en)
Other versions
FR2379192B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2379192A1 publication Critical patent/FR2379192A1/fr
Application granted granted Critical
Publication of FR2379192B1 publication Critical patent/FR2379192B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/49—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems
    • 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
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)

Abstract

L'invention concerne les récepteurs radiophoniques. Dans le cas de l'application à la réception d'un signal stéréophonique transmis par modulation d'amplitude avec bandes latérales indépendantes, le dispositif de l'invention comporte deux détecteurs 140, 144 qui détectent le niveau de signal perturbateur affectant chaque voie, afin de commander automatiquement la réponse audiofréquence des deux voies par l'intermédiaire de filtres passe-bas commutables 126 et 128. Cette configuration permet de réduire davantage la réponse en fréquence de la voie qui est la plus perturbée. Application à la réception de signaux stéréophoniques.
FR7802334A 1977-01-31 1978-01-27 Procede et dispositif de reduction des perturbations par canaux adjacents Granted FR2379192A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76447677A 1977-01-31 1977-01-31

Publications (2)

Publication Number Publication Date
FR2379192A1 true FR2379192A1 (fr) 1978-08-25
FR2379192B1 FR2379192B1 (fr) 1984-02-24

Family

ID=25070842

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7802334A Granted FR2379192A1 (fr) 1977-01-31 1978-01-27 Procede et dispositif de reduction des perturbations par canaux adjacents

Country Status (14)

Country Link
JP (2) JPS5396702A (fr)
AU (1) AU513310B2 (fr)
BR (1) BR7800554A (fr)
CA (1) CA1127717A (fr)
DE (1) DE2803979A1 (fr)
FR (1) FR2379192A1 (fr)
GB (2) GB1593835A (fr)
IL (2) IL53821A (fr)
IT (1) IT1192325B (fr)
MX (2) MX158303A (fr)
NL (1) NL187883C (fr)
NZ (1) NZ186319A (fr)
SE (1) SE420881B (fr)
SU (1) SU976864A3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005537A1 (de) * 1980-02-14 1981-08-20 Wolf, Max, 8103 Oberammergau Verfahren und vorrichtung zur beseitigung von, auf einem hoeherfrequenten uebertragungsweg angelangerten stoerungen
US4653095A (en) * 1986-02-06 1987-03-24 Kahn Leonard R AM stereo receivers having platform motion protection
JPH0232248U (fr) * 1988-08-24 1990-02-28
US5307515A (en) * 1991-08-05 1994-04-26 Ford Motor Company Adjacent channel controller for radio receiver
US5222255A (en) * 1991-08-05 1993-06-22 Ford Motor Company Intermodulation controller for radio receiver
DE4241362C2 (de) * 1992-12-09 1997-06-05 Blaupunkt Werke Gmbh Rundfunkempfänger
DE10116358A1 (de) * 2001-04-02 2002-11-07 Micronas Gmbh Vorrichtung und Verfahren zur Erfassung und Unterdrückung von Störungen
DE10141394A1 (de) * 2001-08-23 2003-03-13 Siemens Ag Adaptives Filterverfahren und Filter zum Filtern eines Funksignals in einem Mobilfunk-Kommunikationssystem
CN100367677C (zh) 2001-08-23 2008-02-06 西门子公司 用于在移动无线通信系统中无线信号滤波的适配滤波方法和滤波器
JP2004347474A (ja) * 2003-05-22 2004-12-09 Sharp Corp 携帯型ナビゲーション装置
RU2269200C2 (ru) * 2003-08-11 2006-01-27 Открытое акционерное общество "Информационные телекоммуникационные технологии" (ОАО "Интелтех") Устройство подавления помех
RU2269201C2 (ru) * 2004-02-12 2006-01-27 Владимир Александрович Пахотин Способ компенсации узкополосных помех

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118036A1 (fr) * 1970-12-11 1972-07-28 Sony Corp
US3944749A (en) * 1972-05-10 1976-03-16 Kahn Leonard R Compatible AM stereophonic receivers involving sideband separation at IF frequency

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218393A (en) * 1960-02-11 1965-11-16 Leonard R Kahn Compatible stereophonic transmission and reception systems, and methods and components characterizing same
DE1938838C3 (de) * 1969-07-28 1979-06-13 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Rauschunterdrfickungssystem
US3908090A (en) * 1972-05-10 1975-09-23 Leonard R Kahn Compatible AM stereophonic transmission system
US3973203A (en) * 1972-09-13 1976-08-03 Kahn Leonard R Carrier isolation system
US4018994A (en) * 1974-07-10 1977-04-19 Kahn Leonard R Compatible AM stereophonic receivers
US3947749A (en) * 1975-01-31 1976-03-30 Hitachi, Ltd. Apparatus for generating high voltage for cathode-ray tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118036A1 (fr) * 1970-12-11 1972-07-28 Sony Corp
US3944749A (en) * 1972-05-10 1976-03-16 Kahn Leonard R Compatible AM stereophonic receivers involving sideband separation at IF frequency

Also Published As

Publication number Publication date
MX150961A (es) 1984-08-29
GB1593835A (en) 1981-07-22
SE7801100L (sv) 1978-08-01
SE420881B (sv) 1981-11-02
NL187883C (nl) 1992-02-03
IT1192325B (it) 1988-03-31
IL53821A0 (en) 1978-04-30
JPS6341254B2 (fr) 1988-08-16
AU3258878A (en) 1979-07-26
NL7801097A (nl) 1978-08-02
CA1127717A (fr) 1982-07-13
SU976864A3 (ru) 1982-11-23
JPS5396702A (en) 1978-08-24
JPS6214974B2 (fr) 1987-04-04
AU513310B2 (en) 1980-11-27
FR2379192B1 (fr) 1984-02-24
GB1593834A (en) 1981-07-22
NZ186319A (en) 1983-11-18
IL59757A0 (en) 1980-06-30
IT7867175A0 (it) 1978-01-30
JPS6121636A (ja) 1986-01-30
DE2803979C2 (fr) 1988-09-15
BR7800554A (pt) 1979-02-13
MX158303A (es) 1989-01-20
DE2803979A1 (de) 1978-08-03
IL53821A (en) 1980-10-26

Similar Documents

Publication Publication Date Title
MX9206003A (es) Metodo y sistema radiodifusor de frecuencia de radio, que utiliza satelites de orbita geosincronica.
CA2140857A1 (fr) Methode et appareil de diagraphie a propagation d'ondes electromagnetiques utilisant l'angle de phase et l'affaiblissement de l'amplitude pour faire varier la profondeur du sondage
YU257681A (en) Circuit assembly for data signal trnsmission between the transmitter and receiver of data signals
ATE39802T1 (de) Verfahren und anordnung zur aussensynchronisierung.
GB1063547A (en) Improvements relating to signal transmission systems
NO20004428D0 (no) Datakommunikasjonssystem
GB2244184A (en) Audio delay detector
FR2541046B1 (fr) Dispositif de couplage de signaux, notamment de signaux radio de satellites
NL191044C (nl) Ontvanger voor stereofonische over de radio uitgezonden signalen.
US3953798A (en) Method and device for radio transmission of binary data signals
SU976864A3 (ru) Приемник амплитудно-модулированного стереофонического сигнала
ES2064731T3 (es) Aparato de deteccion de señales de television.
JPS5326A (en) Video signal amplifier for television receiver
PT72652A (en) Modulated amplitude signals stereophonic receiver
FR2421519A1 (fr) Circuit d'accord automatique precis
DK124180A (da) Fremgangsaade og modtager til demodulering af kvadrufasekodede datasignaler
FR2409647A1 (fr) Circuit a moyenne frequence pour recepteur de television
FR2386934A1 (fr) Dispositif de demodulation
ATE18484T1 (de) Fernseh-empfaenger zur wiedergabe von sendungen mit stereoton.
FR2370391A1 (fr) Circuit de detection de bruit dans un recepteur audiofrequence
FR2394935A1 (fr) Circuit pour la reduction des parasites dans un radio-recepteur fm
ATE17177T1 (de) Einrichtung zum empfang von fernsehsignalen mit linken und rechten stereotonsignalen.
JPS5844679Y2 (ja) Ａｍステレオ受信機におけるステレオパイロット信号除去装置
GB799100A (en) Improvements in or relating to signalling systems for television
SU553898A1 (ru) Способ синхронной св зи шумоподобным радиосигналом