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SE7702418L - Mottagare for flerfrekvenssignalering - Google Patents

Mottagare for flerfrekvenssignalering

Info

Publication number
SE7702418L
SE7702418L SE7702418A SE7702418A SE7702418L SE 7702418 L SE7702418 L SE 7702418L SE 7702418 A SE7702418 A SE 7702418A SE 7702418 A SE7702418 A SE 7702418A SE 7702418 L SE7702418 L SE 7702418L
Authority
SE
Sweden
Prior art keywords
signals
band
low
high band
frequency
Prior art date
Application number
SE7702418A
Other languages
Unknown language ( )
English (en)
Other versions
SE424129B (sv
Inventor
D E Rittenhouse
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 SE7702418L publication Critical patent/SE7702418L/sv
Publication of SE424129B publication Critical patent/SE424129B/sv

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)
SE7702418A 1976-03-03 1977-03-03 Mottagare for flerfrekvenssignaler SE424129B (sv)

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 (2)

Publication Number Publication Date
SE7702418L true SE7702418L (sv) 1977-09-04
SE424129B SE424129B (sv) 1982-06-28

Family

ID=4105372

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7702418A SE424129B (sv) 1976-03-03 1977-03-03 Mottagare for flerfrekvenssignaler

Country Status (11)

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

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
US3710031A (en) * 1970-12-23 1973-01-09 Itt Multi frequency receiver
FR2127450A5 (sv) * 1971-03-03 1972-10-13 Ibm France
DE2116635C3 (de) * 1971-04-05 1978-10-05 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur digitalen Decodierung frequenzcodierter Signale und Schaltungsanordnung zur Durchführung des Verfahrens
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
NL186057B (nl) 1990-04-02
FR2343377B1 (sv) 1983-08-12
DK88877A (da) 1977-09-04
FR2343377A1 (fr) 1977-09-30
AU508271B2 (en) 1980-03-13
JPS52107708A (en) 1977-09-09
SE424129B (sv) 1982-06-28
BE852056A (fr) 1977-07-01
AU2244877A (en) 1978-08-24
GB1532103A (en) 1978-11-15
DE2709370A1 (de) 1977-09-08
NL7702219A (nl) 1977-09-06
NO770696L (no) 1977-09-06
CA1031086A (en) 1978-05-09

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