CA983589A - Fm demodulation system providing noise reduction property - Google Patents

Fm demodulation system providing noise reduction property

Info

Publication number
CA983589A
CA983589A CA177,199A CA177199A CA983589A CA 983589 A CA983589 A CA 983589A CA 177199 A CA177199 A CA 177199A CA 983589 A CA983589 A CA 983589A
Authority
CA
Canada
Prior art keywords
noise reduction
system providing
demodulation system
reduction property
providing noise
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.)
Expired
Application number
CA177,199A
Other languages
English (en)
Other versions
CA177199S (en
Inventor
Katsutoshi Nishimura
Kiyoji Fujisawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 JP7616272A external-priority patent/JPS5319170B2/ja
Priority claimed from JP7616172A external-priority patent/JPS5319169B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA983589A publication Critical patent/CA983589A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/06—Starting switches thermal only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
CA177,199A 1972-07-28 1973-07-24 Fm demodulation system providing noise reduction property Expired CA983589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7616272A JPS5319170B2 (US20090192370A1-20090730-C00001.png) 1972-07-28 1972-07-28
JP7616172A JPS5319169B2 (US20090192370A1-20090730-C00001.png) 1972-07-28 1972-07-28

Publications (1)

Publication Number Publication Date
CA983589A true CA983589A (en) 1976-02-10

Family

ID=26417312

Family Applications (1)

Application Number Title Priority Date Filing Date
CA177,199A Expired CA983589A (en) 1972-07-28 1973-07-24 Fm demodulation system providing noise reduction property

Country Status (5)

Country Link
US (1) US3843928A (US20090192370A1-20090730-C00001.png)
CA (1) CA983589A (US20090192370A1-20090730-C00001.png)
DE (1) DE2338766C3 (US20090192370A1-20090730-C00001.png)
FR (1) FR2195115B1 (US20090192370A1-20090730-C00001.png)
GB (1) GB1436212A (US20090192370A1-20090730-C00001.png)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904969A (en) * 1974-03-07 1975-09-09 Motorola Inc Audio periodicity squelch system
US4122452A (en) * 1974-03-12 1978-10-24 Sanders Associates, Inc. Jamming signal cancellation system
US3873926A (en) * 1974-05-03 1975-03-25 Motorola Inc Audio frequency squelch system
US3939431A (en) * 1974-11-25 1976-02-17 Motorola, Inc. Muting circuit for a radio receiver
US3949301A (en) * 1975-06-27 1976-04-06 Ford Motor Company Digital click removal and squelch control circuit for an FM receiver
FR2447650A1 (fr) * 1979-01-23 1980-08-22 Thomson Csf Emetteur-recepteur a commande automatique d'alternat et reseau de telecommunications comportant un tel emetteur-recepteur
DE3040854A1 (de) * 1980-10-30 1982-06-03 Blaupunkt-Werke Gmbh, 3200 Hildesheim Rausch- und stoerunterdrueckungsschaltung
JPS58137307A (ja) 1982-02-10 1983-08-15 Hitachi Ltd パルスカウントｆｍ検波回路
JPS59111408A (ja) * 1982-12-16 1984-06-27 Pioneer Electronic Corp Ｆｍ信号復調回路
FR2644026B2 (fr) * 1988-03-15 1992-09-11 Larosa Alphonse De Procede d'enregistrement d'images de television couleur sur bande magnetique
FR2628920B1 (fr) * 1988-03-15 1990-07-06 Rosa Alphonse De Procede d'enregistrement et de reproduction de signaux video couleur sur bande magnetique
DE59106855D1 (de) * 1990-09-11 1995-12-14 Stefan Brinkhaus Verfahren und Vorrichtung zur Minimierung von Störungen beim FM- oder PM-Empfang.
US6219095B1 (en) * 1998-02-10 2001-04-17 Wavetek Corporation Noise measurement system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL133956C (US20090192370A1-20090730-C00001.png) * 1961-01-24
NL295649A (US20090192370A1-20090730-C00001.png) * 1962-08-02
US3244991A (en) * 1962-12-07 1966-04-05 Cons Electrodynamics Corp Demodulator for fm signals utilizing pulse forming circuitry
US3588705A (en) * 1969-11-12 1971-06-28 Nasa Frequency-modulation demodulator threshold extension device
US3638128A (en) * 1969-12-22 1972-01-25 Advanced Technology Center Inc Pulse discriminator

Also Published As

Publication number Publication date
US3843928A (en) 1974-10-22
DE2338766B2 (de) 1979-01-18
GB1436212A (en) 1976-05-19
FR2195115B1 (US20090192370A1-20090730-C00001.png) 1976-09-17
DE2338766A1 (de) 1974-02-07
DE2338766C3 (de) 1984-01-26
FR2195115A1 (US20090192370A1-20090730-C00001.png) 1974-03-01

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