SE388100B - Anordning for detektering av en tonsignal med bestemd frekvens - Google Patents

Anordning for detektering av en tonsignal med bestemd frekvens

Info

Publication number
SE388100B
SE388100B SE7511126A SE7511126A SE388100B SE 388100 B SE388100 B SE 388100B SE 7511126 A SE7511126 A SE 7511126A SE 7511126 A SE7511126 A SE 7511126A SE 388100 B SE388100 B SE 388100B
Authority
SE
Sweden
Prior art keywords
detecting
tone signal
determined frequency
frequency
determined
Prior art date
Application number
SE7511126A
Other languages
English (en)
Swedish (sv)
Inventor
B G Lofmark
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE7511126A priority Critical patent/SE388100B/xx
Priority to US05/722,273 priority patent/US4092499A/en
Publication of SE388100B publication Critical patent/SE388100B/xx
Priority to FI762705A priority patent/FI762705A7/fi
Priority to DE2643646A priority patent/DE2643646C2/de
Priority to IT27839/76A priority patent/IT1072517B/it
Priority to BR7606595A priority patent/BR7606595A/pt
Priority to NO763369A priority patent/NO139304C/no
Priority to DK444876A priority patent/DK145170C/da
Priority to ES452073A priority patent/ES452073A1/es

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
    • H04Q1/46—Signalling 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Filters And Equalizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
SE7511126A 1975-10-03 1975-10-03 Anordning for detektering av en tonsignal med bestemd frekvens SE388100B (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE7511126A SE388100B (sv) 1975-10-03 1975-10-03 Anordning for detektering av en tonsignal med bestemd frekvens
US05/722,273 US4092499A (en) 1975-10-03 1976-09-10 Apparatus for detecting a voice frequency signal
FI762705A FI762705A7 (cg-RX-API-DMAC10.html) 1975-10-03 1976-09-22
DE2643646A DE2643646C2 (de) 1975-10-03 1976-09-28 Schaltungsanordnung zum Erfassen eines bestimmten Tonsignals mit einer vorbestimmten Frequenz innerhalb eines bestimmten Tonfrequenzbandes
IT27839/76A IT1072517B (it) 1975-10-03 1976-09-30 Apparecchiatura atta a rivelare segnali di tono
BR7606595A BR7606595A (pt) 1975-10-03 1976-10-01 Aperfeicoamento em aparelho para deteccao de sinal de tom
NO763369A NO139304C (no) 1975-10-03 1976-10-01 Anordning for detektering av et tonesignal hvis frekvens ligger innenfor et visst tonefrekvensbaand
DK444876A DK145170C (da) 1975-10-03 1976-10-01 Apparat til detektering af et tonesignal,hvis frekvens liggerinden for et bestemt tonefrekvensbaand
ES452073A ES452073A1 (es) 1975-10-03 1976-10-02 Un aparato para la deteccion de una senal de tono con una frecuencia determinada.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7511126A SE388100B (sv) 1975-10-03 1975-10-03 Anordning for detektering av en tonsignal med bestemd frekvens

Publications (1)

Publication Number Publication Date
SE388100B true SE388100B (sv) 1976-09-20

Family

ID=20325715

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7511126A SE388100B (sv) 1975-10-03 1975-10-03 Anordning for detektering av en tonsignal med bestemd frekvens

Country Status (9)

Country Link
US (1) US4092499A (cg-RX-API-DMAC10.html)
BR (1) BR7606595A (cg-RX-API-DMAC10.html)
DE (1) DE2643646C2 (cg-RX-API-DMAC10.html)
DK (1) DK145170C (cg-RX-API-DMAC10.html)
ES (1) ES452073A1 (cg-RX-API-DMAC10.html)
FI (1) FI762705A7 (cg-RX-API-DMAC10.html)
IT (1) IT1072517B (cg-RX-API-DMAC10.html)
NO (1) NO139304C (cg-RX-API-DMAC10.html)
SE (1) SE388100B (cg-RX-API-DMAC10.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169969A (en) * 1974-11-21 1979-10-02 Societe Lignes Telegraphiques Et Telephoniques Apparatus for detecting in-band signalling signals
JPS605658A (ja) * 1983-06-07 1985-01-12 Hashimoto Corp 秘書電話方式
JP2598913Y2 (ja) * 1992-07-27 1999-08-23 ミツミ電機株式会社 データスライサ
US5408529A (en) * 1993-06-02 1995-04-18 Motorola, Inc. Dual tone detector operable in the presence of speech or background noise and method therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033263B (de) * 1955-12-27 1958-07-03 Siemens Ag Schaltungsanordnung zum Empfang einer oder mehrerer Signalfrequenzen mit mindestens einer Schwellwertvorrichtung
DE1487973B2 (de) * 1966-05-12 1970-10-08 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen sprachgeschützten Ein- oder Mehrfrequenz-Signalempfänger
DE1537338B2 (de) * 1967-07-21 1974-11-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur empfangsseitigen Fehlererkennung bei der Datenübertragung und Schaltungsanordnung zur Durchführung des Verfahrens
FR2141502B1 (cg-RX-API-DMAC10.html) * 1971-06-01 1973-06-29 Ibm France

Also Published As

Publication number Publication date
DK145170C (da) 1983-02-21
FI762705A7 (cg-RX-API-DMAC10.html) 1977-04-04
DK145170B (da) 1982-09-20
DE2643646A1 (de) 1977-04-14
DK444876A (da) 1977-04-04
BR7606595A (pt) 1977-07-05
DE2643646C2 (de) 1986-06-26
ES452073A1 (es) 1977-10-01
NO139304B (no) 1978-10-30
NO139304C (no) 1979-02-14
NO763369L (cg-RX-API-DMAC10.html) 1977-04-05
IT1072517B (it) 1985-04-10
US4092499A (en) 1978-05-30

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