SE402849B - Flerfrekvenssignalmottagare - Google Patents

Flerfrekvenssignalmottagare

Info

Publication number: SE402849B
Authority: SE; Sweden
Prior art keywords: signal receiver; multifrequency signal; multifrequency; receiver; signal
Prior art date: 1974-12-23

Application number

SE7514214A

Other languages

English (en)

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.)

1974-12-23

Filing date

1975-12-16

Publication date

1978-07-17

1975-12-16 Application filed by Nippon Electric Co filed Critical Nippon Electric Co

1976-06-24 Publication of SE7514214L publication Critical patent/SE7514214L/sv

1978-07-17 Publication of SE402849B publication Critical patent/SE402849B/sv

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 (sv)	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 (sv)
JP (1)	JPS5731716B2 (sv)
DE (1)	DE2558402C3 (sv)
SE (1)	SE402849B (sv)

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
NL7809383A (nl) *	1977-09-16	1979-03-20	Hitachi Ltd	Ontvangstelsel voor multifrequentiesignalen.
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

1974
- 1974-12-23 JP JP14777274A patent/JPS5731716B2/ja not_active Expired
1975
- 1975-12-16 SE SE7514214A patent/SE402849B/sv not_active IP Right Cessation
- 1975-12-22 US US05/642,822 patent/US4025730A/en not_active Expired - Lifetime
- 1975-12-23 DE DE2558402A patent/DE2558402C3/de not_active Expired

Also Published As

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

Publication	Publication Date	Title
AT337077B (de)	1977-06-10	Aufnahmebehalter
DK506875A (da)	1976-05-15	Digitalsignalbehandlingskobling
SE410374B (sv)	1979-10-08	Radiotelefonianleggning
SE402849B (sv)	1978-07-17	Flerfrekvenssignalmottagare
DK335175A (da)	1976-01-27	Modtaktforsterker
IT1039027B (it)	1979-12-10	Converittote di segnale perfezionato
DE2559484A1 (de)	1977-04-07	Signalunterbrechungsschaltung
SE7510389L (sv)	1976-03-19	Signalstabiliserande anordning
NL174589C (nl)	1984-07-02	Signaalindicatie-inrichting.
SE7506217L (sv)	1975-12-08	Signalomkopplingsanordning
NL7505042A (nl)	1975-11-04	Fm-ontvanger.
SE7507939L (sv)	1976-01-20	Multiplexmottagare
AT340479B (de)	1977-12-12	Empfangsumsetzer
IT1017534B (it)	1977-08-10	Radioricevitore
SE7509780L (sv)	1976-03-15	Signalomvandlingsanordning
SE393013B (sv)	1977-04-25	Sendare/mottagare
NL7515148A (nl)	1976-06-30	Am-ontvanger.
IT1041872B (it)	1980-01-10	Apparecchio telefonico
ATA939275A (de)	1980-02-15	Rundfunkempfangsgeraet
AT364428B (de)	1981-10-27	Hf-signaluebertragungsanordnung
SE401437B (sv)	1978-05-02	Signalbehandlingsanordning
IT1037582B (it)	1979-11-20	Ricevitore di segnali multifrequenze
NL7504881A (nl)	1975-10-28	Stoorsignaaleliminatieschakeling.
FR2279892A1 (fr)	1976-02-20	Sonnette de battage de pieux
SE7507688L (sv)	1976-01-07	Telefonnummersendare

Legal Events

Date	Code	Title	Description
1995-01-31	NUG	Patent has lapsed	Ref document number: 7514214-1 Effective date: 19930709 Format of ref document f/p: F

Date

Code

Title

Description

1995-01-31

NUG

Patent has lapsed

Ref document number: 7514214-1

Effective date: 19930709

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