NO854745L - Tolkeinnretning for et pulsvis opptredende tonesignal. - Google Patents

Tolkeinnretning for et pulsvis opptredende tonesignal.

Info

Publication number
NO854745L
NO854745L NO854745A NO854745A NO854745L NO 854745 L NO854745 L NO 854745L NO 854745 A NO854745 A NO 854745A NO 854745 A NO854745 A NO 854745A NO 854745 L NO854745 L NO 854745L
Authority
NO
Norway
Prior art keywords
coupling means
fixed value
signal
value
signals
Prior art date
Application number
NO854745A
Other languages
English (en)
Norwegian (no)
Inventor
Martin Aeberhard
Dieter Gisiger
Jean-Pierre Jacot
Original Assignee
Autophon Ag
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 Autophon Ag filed Critical Autophon Ag
Publication of NO854745L publication Critical patent/NO854745L/no

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
NO854745A 1984-11-30 1985-11-27 Tolkeinnretning for et pulsvis opptredende tonesignal. NO854745L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5725/84A CH672968A5 (fr) 1984-11-30 1984-11-30

Publications (1)

Publication Number Publication Date
NO854745L true NO854745L (no) 1986-06-02

Family

ID=4298317

Family Applications (1)

Application Number Title Priority Date Filing Date
NO854745A NO854745L (no) 1984-11-30 1985-11-27 Tolkeinnretning for et pulsvis opptredende tonesignal.

Country Status (5)

Country Link
EP (1) EP0184984A1 (fr)
CH (1) CH672968A5 (fr)
ES (1) ES8705155A1 (fr)
FI (1) FI854644A (fr)
NO (1) NO854745L (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver
IT1148885B (it) * 1980-07-09 1986-12-03 Sits Soc It Telecom Siemens Unita' di controllo della segnalazione di tipo multifrequenza,di particolare applicazione nelle centrali telefonichedi transito di tipo numerico

Also Published As

Publication number Publication date
EP0184984A1 (fr) 1986-06-18
CH672968A5 (fr) 1990-01-15
ES549453A0 (es) 1987-04-16
FI854644A (fi) 1986-05-31
FI854644A0 (fi) 1985-11-25
ES8705155A1 (es) 1987-04-16

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