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FR2492188B1 - Circuit de demodulation de signaux modules en frequence - Google Patents

Circuit de demodulation de signaux modules en frequence

Info

Publication number
FR2492188B1
FR2492188B1 FR8119174A FR8119174A FR2492188B1 FR 2492188 B1 FR2492188 B1 FR 2492188B1 FR 8119174 A FR8119174 A FR 8119174A FR 8119174 A FR8119174 A FR 8119174A FR 2492188 B1 FR2492188 B1 FR 2492188B1
Authority
FR
France
Prior art keywords
modulated signal
demodulation circuit
frequency modulated
signal demodulation
frequency
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
FR8119174A
Other languages
English (en)
Other versions
FR2492188A1 (fr
Inventor
Kazuyuki Suenaga
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2492188A1 publication Critical patent/FR2492188A1/fr
Application granted granted Critical
Publication of FR2492188B1 publication Critical patent/FR2492188B1/fr
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
    • H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
    • H03D3/20—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements producing pulses whose amplitude or duration depends on phase difference
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0001—Circuit elements of demodulators
    • H03D2200/0039—Exclusive OR logic circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0049—Analog multiplication for detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Television Signal Processing For Recording (AREA)
  • Noise Elimination (AREA)
FR8119174A 1980-10-13 1981-10-12 Circuit de demodulation de signaux modules en frequence Expired FR2492188B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14275280A JPS5765902A (en) 1980-10-13 1980-10-13 Fm demodulating circuit

Publications (2)

Publication Number Publication Date
FR2492188A1 FR2492188A1 (fr) 1982-04-16
FR2492188B1 true FR2492188B1 (fr) 1988-05-27

Family

ID=15322750

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8119174A Expired FR2492188B1 (fr) 1980-10-13 1981-10-12 Circuit de demodulation de signaux modules en frequence

Country Status (4)

Country Link
JP (1) JPS5765902A (fr)
DE (1) DE3140648A1 (fr)
FR (1) FR2492188B1 (fr)
GB (1) GB2089152B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538112A (en) * 1982-08-30 1985-08-27 Wang Laboratories, Inc. Detector using delayed and undelayed inputs for demodulating FM or PM signals
JPS6021603A (ja) * 1983-07-18 1985-02-04 Akiyufueezu Kk Ｆｍ復調回路
EP0143556B2 (fr) * 1983-11-18 1996-03-06 Plessey Overseas Limited Détecteurs de modulation de fréquence
US4906942A (en) * 1987-12-17 1990-03-06 Mitsubishi Denki Kabushiki Kaisha Frequency demodulator with reversal phenomenon compensation
JP3003600B2 (ja) * 1996-11-20 2000-01-31 日本電気株式会社 Ｆｍ復調回路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624523A (en) * 1969-09-19 1971-11-30 Hughes Aircraft Co Digital frequency discriminator
DE2206704B1 (de) * 1972-02-12 1973-08-30 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Laufzeitdemodulator fur eine frequenz oder phasenmodulierte Tragerschwingung und dessen Verwendung bei der Abtastung von Aufzeichnungsträgern
JPS5928084B2 (ja) * 1975-04-24 1984-07-10 ソニー株式会社 復調回路
JPS5233460A (en) * 1975-09-10 1977-03-14 Sony Corp Fm demodulator

Also Published As

Publication number Publication date
JPS5765902A (en) 1982-04-21
GB2089152A (en) 1982-06-16
DE3140648A1 (de) 1982-06-24
GB2089152B (en) 1984-09-12
FR2492188A1 (fr) 1982-04-16

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Legal Events

Date Code Title Description
ST Notification of lapse