IT7829782A0 - Ricevitore di segnali numerici multifrequenze codificati. - Google Patents

Ricevitore di segnali numerici multifrequenze codificati.

Info

Publication number: IT7829782A0
Authority: IT; Italy
Prior art keywords: receiver; coded multi; numeric signals; frequency numeric; frequency
Prior art date: 1977-11-18

Application number

IT7829782A

Other languages

English (en)

Other versions

IT1100245B (it

Original Assignee

Materiel Telephonique

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.)

1977-11-18

Filing date

1978-11-15

Publication date

1978-11-15

1978-11-15 Application filed by Materiel Telephonique filed Critical Materiel Telephonique

1978-11-15 Publication of IT7829782A0 publication Critical patent/IT7829782A0/it

1985-09-28 Application granted granted Critical

1985-09-28 Publication of IT1100245B publication Critical patent/IT1100245B/it

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
- H04Q1/4575—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 which are transmitted in digital form

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Magnetic Resonance Imaging Apparatus (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Radar Systems Or Details Thereof (AREA)
Noise Elimination (AREA)

IT7829782A 1977-11-18 1978-11-15 Ricevitore di segnali numerici multifrequenze codificati IT1100245B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7734683A FR2409652A1 (fr)	1977-11-18	1977-11-18	Recepteur de signaux numeriques multifrequences codes

Publications (2)

Publication Number	Publication Date
IT7829782A0 true IT7829782A0 (it)	1978-11-15
IT1100245B IT1100245B (it)	1985-09-28

Family

ID=9197764

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT7829782A IT1100245B (it)	1977-11-18	1978-11-15	Ricevitore di segnali numerici multifrequenze codificati

Country Status (13)

Country	Link
US (1)	US4223185A (it)
AU (1)	AU4168578A (it)
BE (1)	BE872084A (it)
BR (1)	BR7807499A (it)
CA (1)	CA1104217A (it)
DE (1)	DE2849997A1 (it)
ES (1)	ES475130A1 (it)
FR (1)	FR2409652A1 (it)
GB (1)	GB2008300B (it)
GR (1)	GR65358B (it)
IT (1)	IT1100245B (it)
RO (1)	RO76201A (it)
SE (1)	SE7811743L (it)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ATE2915T1 (de) *	1978-10-27	1983-04-15	Consumer Microcircuits Limited	Anordnung zur bestimmung der periodischen bestandteile eines wechselstromsignals.
FR2485843B1 (fr) *	1980-06-25	1986-11-07	Cit Alcatel	Recepteur numerique de frequences
JPH0642658B2 (ja) *	1981-01-29	1994-06-01	イギリス国	ディジタル通信装置
US4424492A (en) *	1982-02-08	1984-01-03	Hewlett-Packard Company	Apparatus and means for high speed digital frequency shifting
US4583190A (en) *	1982-04-21	1986-04-15	Neuroscience, Inc.	Microcomputer based system for performing fast Fourier transforms
US4563750A (en) *	1983-03-04	1986-01-07	Clarke William L	Fast Fourier transform apparatus with data timing schedule decoupling
US4689760A (en) *	1984-11-09	1987-08-25	Digital Sound Corporation	Digital tone decoder and method of decoding tones using linear prediction coding
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.
US4791600A (en) *	1986-07-28	1988-12-13	Tektronix, Inc.	Digital pipelined heterodyne circuit
CA1289281C (en) *	1988-05-05	1991-09-17	Jerry Stroobach	Digital dtmf tone detector
US4965761A (en) *	1988-06-03	1990-10-23	General Dynamics Corporation, Pomona Div.	Fast discrete fourier transform apparatus and method
JPH02199910A (ja) *	1989-01-27	1990-08-08	Clarion Co Ltd	弾性表面波装置
JPH05158967A (ja) *	1991-12-05	1993-06-25	Nec Corp	計算機システム
US5442696A (en) *	1991-12-31	1995-08-15	At&T Corp.	Method and apparatus for detecting control signals
US5319703A (en) *	1992-05-26	1994-06-07	Vmx, Inc.	Apparatus and method for identifying speech and call-progression signals
US5532936A (en) *	1992-10-21	1996-07-02	Perry; John W.	Transform method and spectrograph for displaying characteristics of speech
US5477465A (en) *	1993-08-31	1995-12-19	Talx Corporation	Multi-frequency receiver with arbitrary center frequencies
CA2116043C (en) *	1994-02-21	1997-09-23	Alexander F. Tulai	Programmable digital call progress tone detector
US5907597A (en) *	1994-08-05	1999-05-25	Smart Tone Authentication, Inc.	Method and system for the secure communication of data
US5583933A (en) *	1994-08-05	1996-12-10	Mark; Andrew R.	Method and apparatus for the secure communication of data
US6021192A (en) *	1998-02-09	2000-02-01	Ag Communication Systems Corporation	Tone detector
US6327603B1 (en) *	1999-02-26	2001-12-04	Trw Inc.	Digital channelizer having efficient architecture for presum discrete fourier transformation selectively of real or complex data and method of operation
US6813324B1 (en) *	1999-08-05	2004-11-02	Mine Radio Systems Inc.	Synchronized communication system
US7761095B2 (en)	2004-03-17	2010-07-20	Telecommunication Systems, Inc.	Secure transmission over satellite phone network
US8280466B2 (en)	2004-03-17	2012-10-02	Telecommunication Systems, Inc.	Four frequency band single GSM antenna
US8239669B2 (en)	2004-03-17	2012-08-07	Telecommunication Systems, Inc.	Reach-back communications terminal with selectable networking options
US8489874B2 (en) *	2004-03-17	2013-07-16	Telecommunication Systems, Inc.	Encryption STE communications through private branch exchange (PBX)
EP2202883A1 (en) *	2008-12-23	2010-06-30	Stimicroelectronics SA	Wide-band signal processor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5731716B2 (it) *	1974-12-23	1982-07-06

1977
- 1977-11-18 FR FR7734683A patent/FR2409652A1/fr active Granted
1978
- 1978-11-09 RO RO7895629A patent/RO76201A/ro unknown
- 1978-11-14 SE SE7811743A patent/SE7811743L/xx unknown
- 1978-11-14 BR BR7807499A patent/BR7807499A/pt unknown
- 1978-11-14 US US05/960,723 patent/US4223185A/en not_active Expired - Lifetime
- 1978-11-15 GB GB7844586A patent/GB2008300B/en not_active Expired
- 1978-11-15 IT IT7829782A patent/IT1100245B/it active
- 1978-11-16 GR GR57661A patent/GR65358B/el unknown
- 1978-11-16 ES ES475130A patent/ES475130A1/es not_active Expired
- 1978-11-17 DE DE19782849997 patent/DE2849997A1/de not_active Withdrawn
- 1978-11-17 AU AU41685/78A patent/AU4168578A/en active Pending
- 1978-11-17 CA CA316,393A patent/CA1104217A/fr not_active Expired
- 1978-11-17 BE BE191781A patent/BE872084A/xx unknown

Also Published As

Publication number	Publication date
AU4168578A (en)	1979-05-24
GR65358B (en)	1980-08-20
CA1104217A (fr)	1981-06-30
GB2008300B (en)	1982-01-27
GB2008300A (en)	1979-05-31
SE7811743L (sv)	1979-05-19
RO76201A (ro)	1981-02-28
FR2409652B1 (it)	1981-11-20
IT1100245B (it)	1985-09-28
DE2849997A1 (de)	1979-05-23
ES475130A1 (es)	1979-04-01
FR2409652A1 (fr)	1979-06-15
US4223185A (en)	1980-09-16
BE872084A (fr)	1979-03-16
BR7807499A (pt)	1979-07-17

Publication	Publication Date	Title
IT1100245B (it)	1985-09-28	Ricevitore di segnali numerici multifrequenze codificati
AT375508B (de)	1984-08-10	Duplex-sende-empfangseinrichtung
IT1099331B (it)	1985-09-18	Complesso ricevitore per televisione
NL188197C (nl)	1992-04-16	Signaalontvanger.
IT7826073A0 (it)	1978-07-25	Ricevitore di segnali multifrequenza.
AT377135B (de)	1985-02-11	Empfaenger
NL180062C (nl)		Radio-ontvanger.
AR216659A1 (es)	1980-01-15	Receptor numerico de senales en codigo multifrecuencia
IT7969149A0 (it)	1979-11-05	Ricevitore di segnali multifrequenza di tastiera codificati in pcm
NL187883C (nl)	1992-02-03	Am-ontvanger.
NL7805825A (nl)	1978-12-06	Radio-ontvanger.
NL7801070A (nl)	1978-08-02	Televisie-ontvanger.
NL187330C (nl)	1991-08-16	Multifrekwentie-code-signaalontvanger.
NL189840C (nl)	1993-08-02	Radio-ontvanginstallatie.
NL7609398A (nl)	1977-03-01	Op afstand bestuurde ontvanger.
NL189587C (nl)	1993-05-17	Televisieontvanger.
NL183116C (nl)	1988-07-18	Multifrequentiesignaal-ontvanginrichting.
NL7809423A (nl)	1979-03-20	Ontvangercircuit.
SE7803252L (sv)	1978-09-24	Talskyddad frekvensselektiv signalmottagare
NL7805168A (nl)	1978-11-15	Zend-ontvangstinrichting.
IT7804821A0 (it)	1978-04-04	Pulsante per campanello.
IT7804822A0 (it)	1978-04-14	Pulsante per campanello.
SE424129B (sv)	1982-06-28	Mottagare for flerfrekvenssignaler
SE7708218L (sv)	1978-01-21	Mottagare for talfrekvenssignaler
JPS5417606A (en)	1979-02-09	Call signal receiver