FR2409652A1 - Recepteur de signaux numeriques multifrequences codes - Google Patents
Recepteur de signaux numeriques multifrequences codesInfo
- Publication number
- FR2409652A1 FR2409652A1 FR7734683A FR7734683A FR2409652A1 FR 2409652 A1 FR2409652 A1 FR 2409652A1 FR 7734683 A FR7734683 A FR 7734683A FR 7734683 A FR7734683 A FR 7734683A FR 2409652 A1 FR2409652 A1 FR 2409652A1
- Authority
- FR
- France
- Prior art keywords
- digital signal
- signal receiver
- coded digital
- frequency coded
- amplitudes
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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)
- Noise Elimination (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Radar Systems Or Details Thereof (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
RECEPTEUR POUR SIGNAL COMPOSE DE LA SOMME ECHANTILLONNEE ET CODEE DE Q SINUSOIDES D'AMPLITUDES A DONT LES FREQUENCES F SONT REGULIEREMENT ESPACEES DE DFPDF (DF: DIVISEUR DE LA FREQUENCE D'ECHANTILLONNAGE F) COMPORTANT: UN HETERODYNE QUI TRANSFORME CHAQUE F EN F-F MULTIPLE DE DF; UN COMPTEUR PAR R, AVEC RFF, F ETANT LE DIVISEUR DE F SUPERIEUR A (Q-1)DF; DES MOYENS DE FILTRAGE; UN CALCULATEUR DE LA TFR POUR NFDF ECHANTILLONS QUI DONNE LES AMPLITUDES A. APPLICATION AUX RECEPTEURS DE CODES MULTIFREQUENCES UTILISES EN COMMUTATION.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7734683A FR2409652A1 (fr) | 1977-11-18 | 1977-11-18 | Recepteur de signaux numeriques multifrequences codes |
RO7895629A RO76201A (fr) | 1977-11-18 | 1978-11-09 | Methode et dispositif de reception pour signals numeriques frequencels a multiples frequences |
BR7807499A BR7807499A (pt) | 1977-11-18 | 1978-11-14 | Receptor de sinais numericos multifrequencias codificados |
SE7811743A SE7811743L (sv) | 1977-11-18 | 1978-11-14 | Mottagare for digitala multifrekvenskodsignaler |
US05/960,723 US4223185A (en) | 1977-11-18 | 1978-11-14 | Multifrequency digital signal receiver |
IT7829782A IT1100245B (it) | 1977-11-18 | 1978-11-15 | Ricevitore di segnali numerici multifrequenze codificati |
GB7844586A GB2008300B (en) | 1977-11-18 | 1978-11-15 | Digital receiver |
ES475130A ES475130A1 (es) | 1977-11-18 | 1978-11-16 | Receptor numerico para senales multifrecuencias |
GR57661A GR65358B (en) | 1977-11-18 | 1978-11-16 | Receiver of codified arithmetical signals of multiple frequencies |
BE191781A BE872084A (fr) | 1977-11-18 | 1978-11-17 | Recepteur de signaux numeriques multifrequences codes |
CA316,393A CA1104217A (fr) | 1977-11-18 | 1978-11-17 | Recepteur de signaux numeriques multifrequences codes |
AU41685/78A AU4168578A (en) | 1977-11-18 | 1978-11-17 | Encoded multifrequency digital signal receiver |
DE19782849997 DE2849997A1 (de) | 1977-11-18 | 1978-11-17 | Digitaler empfaenger fuer mehrfrequenzsignale |
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 |
---|---|
FR2409652A1 true FR2409652A1 (fr) | 1979-06-15 |
FR2409652B1 FR2409652B1 (fr) | 1981-11-20 |
Family
ID=9197764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7734683A Granted FR2409652A1 (fr) | 1977-11-18 | 1977-11-18 | Recepteur de signaux numeriques multifrequences codes |
Country Status (13)
Country | Link |
---|---|
US (1) | US4223185A (fr) |
AU (1) | AU4168578A (fr) |
BE (1) | BE872084A (fr) |
BR (1) | BR7807499A (fr) |
CA (1) | CA1104217A (fr) |
DE (1) | DE2849997A1 (fr) |
ES (1) | ES475130A1 (fr) |
FR (1) | FR2409652A1 (fr) |
GB (1) | GB2008300B (fr) |
GR (1) | GR65358B (fr) |
IT (1) | IT1100245B (fr) |
RO (1) | RO76201A (fr) |
SE (1) | SE7811743L (fr) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2965117D1 (en) * | 1978-10-27 | 1983-05-05 | Consumer Microcircuits | Device for determining periodic components of an alternating signal |
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 (fr) * | 1988-05-05 | 1991-09-17 | Jerry Stroobach | Detecteur de tonalites dtmf numeriques |
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 (fr) * | 1994-02-21 | 1997-09-23 | Alexander F. Tulai | Detecteur de tonalites de progression d'appel numerique programmable |
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) |
US8379740B2 (en) * | 2008-12-23 | 2013-02-19 | Stmicroelectronics S.A. | Wide-band signal processor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5731716B2 (fr) * | 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/fr unknown
- 1978-11-14 BR BR7807499A patent/BR7807499A/pt unknown
- 1978-11-14 US US05/960,723 patent/US4223185A/en not_active Expired - Lifetime
- 1978-11-14 SE SE7811743A patent/SE7811743L/xx unknown
- 1978-11-15 IT IT7829782A patent/IT1100245B/it active
- 1978-11-15 GB GB7844586A patent/GB2008300B/en not_active Expired
- 1978-11-16 ES ES475130A patent/ES475130A1/es not_active Expired
- 1978-11-16 GR GR57661A patent/GR65358B/el unknown
- 1978-11-17 AU AU41685/78A patent/AU4168578A/en active Pending
- 1978-11-17 BE BE191781A patent/BE872084A/fr unknown
- 1978-11-17 CA CA316,393A patent/CA1104217A/fr not_active Expired
- 1978-11-17 DE DE19782849997 patent/DE2849997A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
BR7807499A (pt) | 1979-07-17 |
US4223185A (en) | 1980-09-16 |
SE7811743L (sv) | 1979-05-19 |
GB2008300B (en) | 1982-01-27 |
AU4168578A (en) | 1979-05-24 |
GR65358B (en) | 1980-08-20 |
DE2849997A1 (de) | 1979-05-23 |
BE872084A (fr) | 1979-03-16 |
IT7829782A0 (it) | 1978-11-15 |
ES475130A1 (es) | 1979-04-01 |
GB2008300A (en) | 1979-05-31 |
IT1100245B (it) | 1985-09-28 |
CA1104217A (fr) | 1981-06-30 |
FR2409652B1 (fr) | 1981-11-20 |
RO76201A (fr) | 1981-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |