CA1031086A - Method and apparatus for translating multiple frequency signalling - Google Patents

Method and apparatus for translating multiple frequency signalling

Info

Publication number
CA1031086A
CA1031086A CA247,035A CA247035A CA1031086A CA 1031086 A CA1031086 A CA 1031086A CA 247035 A CA247035 A CA 247035A CA 1031086 A CA1031086 A CA 1031086A
Authority
CA
Canada
Prior art keywords
multiple frequency
frequency signalling
translating multiple
translating
signalling
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
CA247,035A
Other languages
English (en)
French (fr)
Inventor
Dennis E. Rittenhouse
Original Assignee
Northern Electric Co Ltd
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 Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Priority to CA247,035A priority Critical patent/CA1031086A/en
Priority to AU22448/77A priority patent/AU508271B2/en
Priority to GB7674/77A priority patent/GB1532103A/en
Priority to DK88877A priority patent/DK88877A/da
Priority to JP2092077A priority patent/JPS52107708A/ja
Priority to NO770696A priority patent/NO770696L/no
Priority to NLAANVRAGE7702219,A priority patent/NL186057C/xx
Priority to BE175450A priority patent/BE852056A/xx
Priority to DE19772709370 priority patent/DE2709370A1/de
Priority to SE7702418A priority patent/SE424129B/xx
Priority to FR7706234A priority patent/FR2343377A1/fr
Application granted granted Critical
Publication of CA1031086A publication Critical patent/CA1031086A/en
Expired 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)
  • Stereo-Broadcasting Methods (AREA)
CA247,035A 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling Expired CA1031086A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA247,035A CA1031086A (en) 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling
AU22448/77A AU508271B2 (en) 1976-03-03 1977-02-18 Translating multiple frequency signalling
GB7674/77A GB1532103A (en) 1976-03-03 1977-02-23 Method and apparatus for translating multiple frequency signalling
JP2092077A JPS52107708A (en) 1976-03-03 1977-03-01 Method and device for translating multiple frequency signal
DK88877A DK88877A (da) 1976-03-03 1977-03-01 Fremgangsmade og apparat til omsetning af flerfrekvenssignalering
NO770696A NO770696L (no) 1976-03-03 1977-03-01 Fremgangsm}te og apparat for dekoding av signaler med flere frekvenser
NLAANVRAGE7702219,A NL186057C (nl) 1976-03-03 1977-03-02 Met verscheidene frequenties werkende signaalontvanger voor het ontvangen van tevoren bepaalde dubbeltoonsignalen.
BE175450A BE852056A (fr) 1976-03-03 1977-03-03 Procede et appareil pour traduire des signaux a frequences multiples
DE19772709370 DE2709370A1 (de) 1976-03-03 1977-03-03 Verfahren und geraet fuer die umsetzung bzw. zuordnung von vielfach-frequenz-signalen
SE7702418A SE424129B (sv) 1976-03-03 1977-03-03 Mottagare for flerfrekvenssignaler
FR7706234A FR2343377A1 (fr) 1976-03-03 1977-03-03 Procede et appareil pour transformer des signaux de signalisation a frequences multiples

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA247,035A CA1031086A (en) 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling

Publications (1)

Publication Number Publication Date
CA1031086A true CA1031086A (en) 1978-05-09

Family

ID=4105372

Family Applications (1)

Application Number Title Priority Date Filing Date
CA247,035A Expired CA1031086A (en) 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling

Country Status (11)

Country Link
JP (1) JPS52107708A (da)
AU (1) AU508271B2 (da)
BE (1) BE852056A (da)
CA (1) CA1031086A (da)
DE (1) DE2709370A1 (da)
DK (1) DK88877A (da)
FR (1) FR2343377A1 (da)
GB (1) GB1532103A (da)
NL (1) NL186057C (da)
NO (1) NO770696L (da)
SE (1) SE424129B (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831140B2 (ja) * 1978-11-10 1983-07-04 株式会社日立製作所 信号受信器
DE3629907A1 (de) * 1986-09-03 1988-03-10 Standard Elektrik Lorenz Ag Signalisierungsempfaenger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743945A (en) * 1970-12-23 1973-07-03 Itt Limiter for multi frequency voice receiver
FR2127450A5 (da) * 1971-03-03 1972-10-13 Ibm France
BR7101977D0 (pt) * 1971-04-05 1973-06-14 Ibm Processos e disposicoes de circuito para decodificacao digital de sinais de frequencia codificada
CA976675A (en) * 1972-10-16 1975-10-21 Microsystems International Limited Dual tone receiver
US3914557A (en) * 1973-04-11 1975-10-21 Bell Telephone Labor Inc Multifrequency tone detecting arrangement
US3936801A (en) * 1974-09-12 1976-02-03 Bell Telephone Laboratories, Incorporated Multifrequency signal receiver timing circuit

Also Published As

Publication number Publication date
NL186057C (nl) 1990-09-03
JPS52107708A (en) 1977-09-09
NO770696L (no) 1977-09-06
SE424129B (sv) 1982-06-28
NL186057B (nl) 1990-04-02
NL7702219A (nl) 1977-09-06
FR2343377B1 (da) 1983-08-12
SE7702418L (sv) 1977-09-04
AU508271B2 (en) 1980-03-13
BE852056A (fr) 1977-07-01
DE2709370A1 (de) 1977-09-08
DK88877A (da) 1977-09-04
GB1532103A (en) 1978-11-15
AU2244877A (en) 1978-08-24
FR2343377A1 (fr) 1977-09-30

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