GB2089152B - Frequency-modulated signal demodulating circuit - Google Patents

Frequency-modulated signal demodulating circuit

Info

Publication number
GB2089152B
GB2089152B GB8130851A GB8130851A GB2089152B GB 2089152 B GB2089152 B GB 2089152B GB 8130851 A GB8130851 A GB 8130851A GB 8130851 A GB8130851 A GB 8130851A GB 2089152 B GB2089152 B GB 2089152B
Authority
GB
United Kingdom
Prior art keywords
frequency
modulated signal
demodulating circuit
signal demodulating
circuit
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
GB8130851A
Other versions
GB2089152A (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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Publication of GB2089152A publication Critical patent/GB2089152A/en
Application granted granted Critical
Publication of GB2089152B publication Critical patent/GB2089152B/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
    • H03D3/18—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)
GB8130851A 1980-10-13 1981-10-13 Frequency-modulated signal demodulating circuit Expired GB2089152B (en)

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
GB2089152A GB2089152A (en) 1982-06-16
GB2089152B true GB2089152B (en) 1984-09-12

Family

ID=15322750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8130851A Expired GB2089152B (en) 1980-10-13 1981-10-13 Frequency-modulated signal demodulating circuit

Country Status (4)

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

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 (en) * 1983-07-18 1985-02-04 Akiyufueezu Kk Fm demodulation circuit
DE3482986D1 (en) * 1983-11-18 1990-09-20 Plessey Overseas FREQUENCY MODULATION DETECTORS.
GB2212017B (en) * 1987-12-17 1992-05-20 Mitsubishi Electric Corp Frequency demodulator
JP3003600B2 (en) * 1996-11-20 2000-01-31 日本電気株式会社 FM demodulation circuit

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 (en) * 1972-02-12 1973-08-30 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Time-of-flight demodulator for a frequency or phase-modulated carrier oscillation and its use when scanning recording media
JPS5928084B2 (en) * 1975-04-24 1984-07-10 ソニー株式会社 Demodulation circuit
JPS5233460A (en) * 1975-09-10 1977-03-14 Sony Corp Fm demodulator

Also Published As

Publication number Publication date
DE3140648A1 (en) 1982-06-24
FR2492188A1 (en) 1982-04-16
GB2089152A (en) 1982-06-16
FR2492188B1 (en) 1988-05-27
JPS5765902A (en) 1982-04-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941013