FR2379192A1 - METHOD AND DEVICE FOR REDUCING INTERRUPTIONS USING ADJACENT CHANNELS - Google Patents

METHOD AND DEVICE FOR REDUCING INTERRUPTIONS USING ADJACENT CHANNELS

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
French (fr)
Other versions
FR2379192B1 (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.)
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/en
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.The invention relates to radio receivers. In the case of the application to the reception of a stereophonic signal transmitted by amplitude modulation with independent sidebands, the device of the invention comprises two detectors 140, 144 which detect the level of disturbing signal affecting each channel, in order to to automatically control the audio frequency response of the two channels by means of switchable low-pass filters 126 and 128. This configuration makes it possible to further reduce the frequency response of the channel which is the most disturbed. Application to the reception of stereophonic signals.

FR7802334A 1977-01-31 1978-01-27 METHOD AND DEVICE FOR REDUCING INTERRUPTIONS USING ADJACENT CHANNELS Granted FR2379192A1 (en)

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 (en) 1978-08-25
FR2379192B1 FR2379192B1 (en) 1984-02-24

Family

ID=25070842

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7802334A Granted FR2379192A1 (en) 1977-01-31 1978-01-27 METHOD AND DEVICE FOR REDUCING INTERRUPTIONS USING ADJACENT CHANNELS

Country Status (14)

Country Link
JP (2) JPS5396702A (en)
AU (1) AU513310B2 (en)
BR (1) BR7800554A (en)
CA (1) CA1127717A (en)
DE (1) DE2803979A1 (en)
FR (1) FR2379192A1 (en)
GB (2) GB1593834A (en)
IL (2) IL53821A (en)
IT (1) IT1192325B (en)
MX (2) MX150961A (en)
NL (1) NL187883C (en)
NZ (1) NZ186319A (en)
SE (1) SE420881B (en)
SU (1) SU976864A3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005537A1 (en) * 1980-02-14 1981-08-20 Wolf, Max, 8103 Oberammergau Transmission system with line fault rectifying circuit - splits HF into two symmetrical sections supplied to comparator controlling logic
US4653095A (en) * 1986-02-06 1987-03-24 Kahn Leonard R AM stereo receivers having platform motion protection
JPH0232248U (en) * 1988-08-24 1990-02-28
US5222255A (en) * 1991-08-05 1993-06-22 Ford Motor Company Intermodulation controller for radio receiver
US5307515A (en) * 1991-08-05 1994-04-26 Ford Motor Company Adjacent channel controller for radio receiver
DE4241362C2 (en) * 1992-12-09 1997-06-05 Blaupunkt Werke Gmbh Radio receiver
DE10116358A1 (en) * 2001-04-02 2002-11-07 Micronas Gmbh Device and method for the detection and suppression of faults
DE10141394A1 (en) * 2001-08-23 2003-03-13 Siemens Ag Method for filtering a radio signal to prepare for an EDGE signal calculates signal-to-noise ratios to detect neighboring channel interference during filtering prior to producing a desired signal.
CN100367677C (en) 2001-08-23 2008-02-06 西门子公司 Adaptive filtering method and filter for filtering a radio signal in a mobile radio-communication system
JP2004347474A (en) * 2003-05-22 2004-12-09 Sharp Corp Mobile navigation system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118036A1 (en) * 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 (en) * 1969-07-28 1979-06-13 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Noise reduction system
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 (en) * 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
NZ186319A (en) 1983-11-18
JPS6121636A (en) 1986-01-30
DE2803979A1 (en) 1978-08-03
IL53821A (en) 1980-10-26
IL53821A0 (en) 1978-04-30
DE2803979C2 (en) 1988-09-15
NL7801097A (en) 1978-08-02
IT1192325B (en) 1988-03-31
IL59757A0 (en) 1980-06-30
IT7867175A0 (en) 1978-01-30
AU3258878A (en) 1979-07-26
AU513310B2 (en) 1980-11-27
CA1127717A (en) 1982-07-13
MX150961A (en) 1984-08-29
GB1593835A (en) 1981-07-22
JPS6341254B2 (en) 1988-08-16
SU976864A3 (en) 1982-11-23
MX158303A (en) 1989-01-20
JPS5396702A (en) 1978-08-24
SE420881B (en) 1981-11-02
NL187883C (en) 1992-02-03
JPS6214974B2 (en) 1987-04-04
GB1593834A (en) 1981-07-22
FR2379192B1 (en) 1984-02-24
BR7800554A (en) 1979-02-13
SE7801100L (en) 1978-08-01

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