SE402849B - Flerfrekvenssignalmottagare - Google Patents

Flerfrekvenssignalmottagare

Info

Publication number
SE402849B
SE402849B SE7514214A SE7514214A SE402849B SE 402849 B SE402849 B SE 402849B SE 7514214 A SE7514214 A SE 7514214A SE 7514214 A SE7514214 A SE 7514214A SE 402849 B SE402849 B SE 402849B
Authority
SE
Sweden
Prior art keywords
signal receiver
multifrequency signal
multifrequency
receiver
signal
Prior art date
Application number
SE7514214A
Other languages
English (en)
Swedish (sv)
Other versions
SE7514214L (sv
Inventor
A Sawai
Original Assignee
Nippon Electric Co
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 Nippon Electric Co filed Critical Nippon Electric Co
Publication of SE7514214L publication Critical patent/SE7514214L/
Publication of SE402849B publication Critical patent/SE402849B/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)
  • Radar Systems Or Details Thereof (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
SE7514214A 1974-12-23 1975-12-16 Flerfrekvenssignalmottagare SE402849B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14777274A JPS5731716B2 (ja) 1974-12-23 1974-12-23

Publications (2)

Publication Number Publication Date
SE7514214L SE7514214L (sv) 1976-06-24
SE402849B true SE402849B (sv) 1978-07-17

Family

ID=15437820

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7514214A SE402849B (sv) 1974-12-23 1975-12-16 Flerfrekvenssignalmottagare

Country Status (4)

Country Link
US (1) US4025730A (ja)
JP (1) JPS5731716B2 (ja)
DE (1) DE2558402C3 (ja)
SE (1) SE402849B (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7511707A (nl) * 1975-10-06 1977-04-12 Philips Nv Kruiscorrelatie-inrichting.
US4185172A (en) * 1976-12-17 1980-01-22 Cselt - Centro Studi E Laboratori Telecomunicazioni S.P.A. Method of and means for detecting digitized multi frequency-coded signals
CA1100641A (en) * 1977-09-16 1981-05-05 Akira Ichikawa Multifrequency signal receiving system
FR2409652A1 (fr) * 1977-11-18 1979-06-15 Materiel Telephonique Recepteur de signaux numeriques multifrequences codes
GB2032737A (en) * 1978-10-24 1980-05-08 Standard Telephones Cables Ltd Radio receiver for tone modulated signals
DE2939369C2 (de) * 1979-09-28 1983-01-05 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren zum Erkennen des Empfanges vorgegebener Tonfrequenzen
US4333150A (en) * 1980-01-28 1982-06-01 Westinghouse Electric Corp. Signal receiving apparatus and method
JPS56149889A (en) * 1980-04-23 1981-11-19 Nec Corp Push-botton telephone signal receiving system
JPS56153897A (en) * 1980-04-30 1981-11-28 Nec Corp Receiving device for push-button telephone signal
FR2485843B1 (fr) * 1980-06-25 1986-11-07 Cit Alcatel Recepteur numerique de frequences
US4594555A (en) * 1984-10-29 1986-06-10 Hewlett-Packard Company Frequency selective sampling detector
NL8502008A (nl) * 1985-07-12 1987-02-02 Philips Nv Ontvanginrichting voor het onder bescherming van een stoorsignaal/spraaksignaalbewakingsfunctie herkennen van een aantal verschillende en voorafbepaalde frequentiecombinaties van toonfrequente signaleringscomponenten.
US4783845A (en) * 1985-12-20 1988-11-08 Itt Aerospace Optical Digital tone squelch detector
JPH0757030B2 (ja) * 1988-11-08 1995-06-14 シャープ株式会社 Ｄｔｍｆレシーバ
US5477465A (en) * 1993-08-31 1995-12-19 Talx Corporation Multi-frequency receiver with arbitrary center frequencies
US6020782A (en) * 1994-05-25 2000-02-01 The United States Of America As Represented By The Secretary Of The Navy Noise assisted signal processor with nonlinearly coupled arrays of nonlinear dynamic elements
JP2000151761A (ja) * 1998-11-18 2000-05-30 Matsushita Electric Ind Co Ltd 電話装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267272B (de) * 1966-03-25 1968-05-02 Siemens Ag Frequenzselektiver Signalempfaenger
US3652805A (en) * 1969-10-10 1972-03-28 Information Control Systems In Binary frequency identification system
US3636446A (en) * 1970-03-04 1972-01-18 H B Engineering Corp Receiver for detecting signals within a predetermined bandwidth
US3679882A (en) * 1970-06-11 1972-07-25 Ibm Fourier digital filter or equalizer and method of operation therefor

Also Published As

Publication number Publication date
DE2558402A1 (de) 1976-06-24
DE2558402B2 (de) 1979-03-08
JPS5173809A (ja) 1976-06-26
DE2558402C3 (de) 1979-10-31
JPS5731716B2 (ja) 1982-07-06
US4025730A (en) 1977-05-24
SE7514214L (sv) 1976-06-24

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