FR2311469A1 - Procede de detection et dispositif recepteur de signaux multifrequences - Google Patents

Procede de detection et dispositif recepteur de signaux multifrequences

Info

Publication number
FR2311469A1
FR2311469A1 FR7514830A FR7514830A FR2311469A1 FR 2311469 A1 FR2311469 A1 FR 2311469A1 FR 7514830 A FR7514830 A FR 7514830A FR 7514830 A FR7514830 A FR 7514830A FR 2311469 A1 FR2311469 A1 FR 2311469A1
Authority
FR
France
Prior art keywords
parallel
pass filter
receiving device
frequency signal
signal receiving
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.)
Granted
Application number
FR7514830A
Other languages
English (en)
French (fr)
Other versions
FR2311469B1 (enExample
Inventor
Christian Coppens
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.)
Nokia Inc
Original Assignee
Nokia Inc
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 Nokia Inc filed Critical Nokia Inc
Priority to FR7514830A priority Critical patent/FR2311469A1/fr
Publication of FR2311469A1 publication Critical patent/FR2311469A1/fr
Application granted granted Critical
Publication of FR2311469B1 publication Critical patent/FR2311469B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR7514830A 1975-05-13 1975-05-13 Procede de detection et dispositif recepteur de signaux multifrequences Granted FR2311469A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7514830A FR2311469A1 (fr) 1975-05-13 1975-05-13 Procede de detection et dispositif recepteur de signaux multifrequences

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7514830A FR2311469A1 (fr) 1975-05-13 1975-05-13 Procede de detection et dispositif recepteur de signaux multifrequences

Publications (2)

Publication Number Publication Date
FR2311469A1 true FR2311469A1 (fr) 1976-12-10
FR2311469B1 FR2311469B1 (enExample) 1980-06-27

Family

ID=9155145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7514830A Granted FR2311469A1 (fr) 1975-05-13 1975-05-13 Procede de detection et dispositif recepteur de signaux multifrequences

Country Status (1)

Country Link
FR (1) FR2311469A1 (enExample)

Also Published As

Publication number Publication date
FR2311469B1 (enExample) 1980-06-27

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Legal Events

Date Code Title Description
ST Notification of lapse