BE852056A - Procede et appareil pour traduire des signaux a frequences multiples - Google Patents

Procede et appareil pour traduire des signaux a frequences multiples

Info

Publication number
BE852056A
BE852056A BE175450A BE175450A BE852056A BE 852056 A BE852056 A BE 852056A BE 175450 A BE175450 A BE 175450A BE 175450 A BE175450 A BE 175450A BE 852056 A BE852056 A BE 852056A
Authority
BE
Belgium
Prior art keywords
translation
frequency signals
multiple frequency
signals
frequency
Prior art date
Application number
BE175450A
Other languages
English (en)
French (fr)
Original Assignee
Northern Telecom 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 Telecom Ltd filed Critical Northern Telecom Ltd
Publication of BE852056A publication Critical patent/BE852056A/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)
  • Stereo-Broadcasting Methods (AREA)
BE175450A 1976-03-03 1977-03-03 Procede et appareil pour traduire des signaux a frequences multiples BE852056A (fr)

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
BE852056A true BE852056A (fr) 1977-07-01

Family

ID=4105372

Family Applications (1)

Application Number Title Priority Date Filing Date
BE175450A BE852056A (fr) 1976-03-03 1977-03-03 Procede et appareil pour traduire des signaux a frequences multiples

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
CA1031086A (en) 1978-05-09
SE7702418L (sv) 1977-09-04
AU508271B2 (en) 1980-03-13
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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