FR2145661B1 - - Google Patents

Info

Publication number
FR2145661B1
FR2145661B1 FR7225411A FR7225411A FR2145661B1 FR 2145661 B1 FR2145661 B1 FR 2145661B1 FR 7225411 A FR7225411 A FR 7225411A FR 7225411 A FR7225411 A FR 7225411A FR 2145661 B1 FR2145661 B1 FR 2145661B1
Authority
FR
France
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
FR7225411A
Other versions
FR2145661A1 (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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2145661A1 publication Critical patent/FR2145661A1/fr
Application granted granted Critical
Publication of FR2145661B1 publication Critical patent/FR2145661B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1563—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
FR7225411A 1971-07-13 1972-07-13 Expired FR2145661B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2134956A DE2134956C3 (de) 1971-07-13 1971-07-13 Diskriminatoranordnung für Datenmodems einer doppelseitig gerichteten Zweidraht-Datenübertragungseinrichtung mit Frequenzmodulation

Publications (2)

Publication Number Publication Date
FR2145661A1 FR2145661A1 (fr) 1973-02-23
FR2145661B1 true FR2145661B1 (fr) 1976-10-29

Family

ID=5813524

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7225411A Expired FR2145661B1 (fr) 1971-07-13 1972-07-13

Country Status (8)

Country Link
US (1) US3794757A (fr)
AU (1) AU470715B2 (fr)
BE (1) BE786046A (fr)
CH (1) CH551107A (fr)
DE (1) DE2134956C3 (fr)
ES (1) ES404811A1 (fr)
FR (1) FR2145661B1 (fr)
IT (1) IT962497B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397027A1 (fr) * 1977-07-07 1979-02-02 Cii Honeywell Bull Perfectionnements aux dispositifs de transmission de signaux electriques entre deux dispositifs relies par des contacts
FR2445665A1 (fr) * 1978-12-29 1980-07-25 Pottier Bernard Dispositif de telecommunications hyperfrequence
US4541105A (en) * 1984-03-23 1985-09-10 Sundstrand Data Control, Inc. Counting apparatus and method for frequency sampling
FR2591827B1 (fr) * 1985-12-17 1991-05-17 Thomson Csf Demodulateur de signal a frequence variable, a large bande de frequence et rapide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH431610A (it) * 1964-04-07 1967-03-15 Sits Soc It Telecom Siemens Disposizione di circuiti per ridurre la distorsione propria di un demodulatore di onde modulate in frequenza per trasmissioni telegrafische e di dati
US3466550A (en) * 1965-12-06 1969-09-09 Digitronics Corp Frequency-to-voltage converter
US3665474A (en) * 1966-08-19 1972-05-23 Amscat Corp High density communications system
US3581220A (en) * 1969-02-17 1971-05-25 Allan J Bell Frequency modulation signal demodulator
US3627949A (en) * 1970-01-15 1971-12-14 Western Telematic Inc Digital data transmission system

Also Published As

Publication number Publication date
DE2134956C3 (de) 1975-09-25
IT962497B (it) 1973-12-20
BE786046A (fr) 1973-01-10
DE2134956A1 (de) 1973-01-25
DE2134956B2 (de) 1975-02-13
US3794757A (en) 1974-02-26
FR2145661A1 (fr) 1973-02-23
AU4404472A (en) 1974-01-03
CH551107A (de) 1974-06-28
AU470715B2 (en) 1976-03-25
ES404811A1 (es) 1975-06-16

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Legal Events

Date Code Title Description
ST Notification of lapse