FR1511133A - Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method - Google Patents

Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method

Info

Publication number
FR1511133A
FR1511133A FR87745A FR87745A FR1511133A FR 1511133 A FR1511133 A FR 1511133A FR 87745 A FR87745 A FR 87745A FR 87745 A FR87745 A FR 87745A FR 1511133 A FR1511133 A FR 1511133A
Authority
FR
France
Prior art keywords
frequencies
implementing
identifying
group
receiving apparatus
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
FR87745A
Other languages
French (fr)
Inventor
Daniel Fauconnet
Jean Alcide Robert Miroux
Jean-Claude Weber
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.)
Association des Ouvriers en Instruments de Precision
Original Assignee
Association des Ouvriers en Instruments de Precision
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 Association des Ouvriers en Instruments de Precision filed Critical Association des Ouvriers en Instruments de Precision
Priority to FR87745A priority Critical patent/FR1511133A/en
Application granted granted Critical
Publication of FR1511133A publication Critical patent/FR1511133A/en
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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR87745A 1966-12-16 1966-12-16 Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method Expired FR1511133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR87745A FR1511133A (en) 1966-12-16 1966-12-16 Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR87745A FR1511133A (en) 1966-12-16 1966-12-16 Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method

Publications (1)

Publication Number Publication Date
FR1511133A true FR1511133A (en) 1968-01-26

Family

ID=8622549

Family Applications (1)

Application Number Title Priority Date Filing Date
FR87745A Expired FR1511133A (en) 1966-12-16 1966-12-16 Method for identifying each of the frequencies of a group of several determined frequencies and receiving apparatus for implementing this method

Country Status (1)

Country Link
FR (1) FR1511133A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2132303A1 (en) * 1971-04-05 1972-11-17 Ibm
FR2201599A1 (en) * 1972-09-28 1974-04-26 Siemens Ag
FR2393467A1 (en) * 1977-06-01 1978-12-29 Sony Corp DIGITAL CIRCUIT SELECTIVE TO ONE SIGNAL

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2132303A1 (en) * 1971-04-05 1972-11-17 Ibm
FR2201599A1 (en) * 1972-09-28 1974-04-26 Siemens Ag
FR2393467A1 (en) * 1977-06-01 1978-12-29 Sony Corp DIGITAL CIRCUIT SELECTIVE TO ONE SIGNAL

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