ZA757642B - Digital multifrequency signals receiver - Google Patents

Digital multifrequency signals receiver

Info

Publication number
ZA757642B
ZA757642B ZA757642A ZA757642A ZA757642B ZA 757642 B ZA757642 B ZA 757642B ZA 757642 A ZA757642 A ZA 757642A ZA 757642 A ZA757642 A ZA 757642A ZA 757642 B ZA757642 B ZA 757642B
Authority
ZA
South Africa
Prior art keywords
signals receiver
multifrequency signals
digital multifrequency
digital
receiver
Prior art date
Application number
ZA757642A
Other languages
English (en)
Inventor
Michael Louis Avignon
Louis Avignon Michael
Jean-Pierre Chevillon
Chevillon Jean-Pierre
Original Assignee
Int 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of ZA757642B publication Critical patent/ZA757642B/xx

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)
ZA757642A 1974-12-18 1975-12-05 Digital multifrequency signals receiver ZA757642B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7441711A FR2295665A1 (fr) 1974-12-18 1974-12-18 Recepteur numerique de signaux multifrequences

Publications (1)

Publication Number Publication Date
ZA757642B true ZA757642B (en) 1976-11-24

Family

ID=9146325

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA757642A ZA757642B (en) 1974-12-18 1975-12-05 Digital multifrequency signals receiver

Country Status (5)

Country Link
DE (1) DE2556354C2 (it)
FR (1) FR2295665A1 (it)
GB (1) GB1492310A (it)
IE (1) IE42621B1 (it)
ZA (1) ZA757642B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373926A1 (fr) * 1976-12-10 1978-07-07 Constr Telephoniques Recepteur de signaux multifrequences
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
FR2440126A1 (fr) * 1978-10-27 1980-05-23 Materiel Telephonique Dispositif et procede de reconnaissance pour recepteur numerique de signaux multifrequences
NL7903346A (nl) * 1979-04-27 1980-10-29 Bell Telephone Mfg Digitaal signaleringsstelsel.
CA1137565A (en) * 1979-05-22 1982-12-14 Masaharu Kawaguchi Digital multi-frequency receiver
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus
DD266253A3 (de) * 1987-06-22 1989-03-29 Leipzig Rft Nachrichtenelekt Universeller digitaler mfc-empfaenger
DE3743755C2 (de) * 1987-12-23 1996-09-05 Sel Alcatel Ag Verfahren und Einrichtung zur sicheren Übertragung von Blockinformation zwischen Spurplanstellwerken
US4833399A (en) * 1988-06-13 1989-05-23 Texas Instruments Incorporated DTMF receiver

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1603175A (it) * 1968-07-30 1971-03-22
US3706076A (en) * 1970-12-21 1972-12-12 Bell Telephone Labor Inc Programmable digital filter apparatus

Also Published As

Publication number Publication date
IE42621L (en) 1976-06-18
DE2556354C2 (de) 1984-03-08
FR2295665B1 (it) 1978-07-13
GB1492310A (en) 1977-11-16
DE2556354A1 (de) 1976-06-24
FR2295665A1 (fr) 1976-07-16
IE42621B1 (en) 1980-09-10

Similar Documents

Publication Publication Date Title
AU4168578A (en) Encoded multifrequency digital signal receiver
AU8338475A (en) Signal coding for telephone communication system
GB1543741A (en) Digital filter
JPS5255313A (en) Facsimile signal coding system
SE402849B (sv) Flerfrekvenssignalmottagare
CA1004785A (en) Multifrequency signal receiver
JPS5253613A (en) Digital repeater
JPS5255312A (en) Facsimile signal coding system
CA1003140A (en) Digital dial pulse receiver
ZA757642B (en) Digital multifrequency signals receiver
JPS51112159A (en) Digital noise discriminator
IL47017A0 (en) Digital tacan system
ZA754275B (en) Digital signal transmission
JPS51114011A (en) Digital communication system
CA1035879A (en) Multifrequency signal receiver timing circuit
HK68383A (en) Signal receiver
AU7094474A (en) Television receiver
JPS5229245A (en) Radio transmission type digital seismic signal recorder
CA1009314A (en) Digital multifrequency signal generator
CA1034210A (en) Multifrequency tone detection
JPS5292416A (en) Digital communication system
JPS532017A (en) Fm digital signal receiver
JPS5275111A (en) Facsimile signal coding system
JPS5277644A (en) Digital signal processor
US4009440A (en) Radio receiver