FR2455405A1 - Systeme de signalisation numerique - Google Patents

Systeme de signalisation numerique

Info

Publication number
FR2455405A1
FR2455405A1 FR8009534A FR8009534A FR2455405A1 FR 2455405 A1 FR2455405 A1 FR 2455405A1 FR 8009534 A FR8009534 A FR 8009534A FR 8009534 A FR8009534 A FR 8009534A FR 2455405 A1 FR2455405 A1 FR 2455405A1
Authority
FR
France
Prior art keywords
digital
filters
mic
dead memory
signaling
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
Application number
FR8009534A
Other languages
English (en)
Other versions
FR2455405B1 (fr
Inventor
Willi Arthur Henri Ruys
Dermod Joseph Kavanag O'neilly
Leopold Paul Verbist
Daniel Simon Gregoire Hoefkens
Guido Maria Josepha B Thyssens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2455405A1 publication Critical patent/FR2455405A1/fr
Application granted granted Critical
Publication of FR2455405B1 publication Critical patent/FR2455405B1/fr
Expired legal-status Critical Current

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)
  • Time-Division Multiplex Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

SYSTEME DE SIGNALISATION NUMERIQUE ET, PLUS PARTICULIEREMENT, RECEPTUR NUMERIQUE DE SIGNAUX A FREQUENCE VOCALE ECHANTILLONNES ET MODULES PAR IMPULSION ET CODAGE (CODES MIC). DANS UNE REALISATION PREFERENTIELLE, HUIT FILTRES NUMERIQUES NON RECURSIFS A PHASE LINEAIRE ET HUIT TRANSFORMATEURS DE HILBERT HOMOLOGUES SONT MULTIPLEXES DANS LE TEMPS POUR SEIZE VOIES MIC ENTRANTES. SIX DES HUIT PAIRES DE FILTRES ONT UNE BANDE PASSANTE ACCORDEE AVEC UNE FREQUENCE DE SIGNALISATION PARTICULIERE ET LES DEUX AUTRES ONT PLUSIEURS BANDES PASSANTES ENTRELACEES (PAR EXEMPLE 2 ET 3) FOURNISSANT LES CINQ BANDES DE GARDE NECESSAIRES. LES REPONSES IMPULSIONNELLES DES SEIZE FILTRES SONT ENREGISTREES EN MEMOIRE MORTE CB SOUS FORME LOGARITHMIQUE CODEE ET LES CODES MIC PSEUDO-LOGARITHMIQUE SONT TRADUITS DANS LA MEME FORME (MEMOIRE MORTE ME1) POUR QUE LES CONVOLUTIONS PUISSENT ETRE EFFECTUEES PAR DEUX ADDITIONNEURS ADD1 ET 2 ENTRE LESQUELS UNE DEUXIEME MEMOIRE MORTE ME2 FOURNIT LES VALEURS LINEAIRES DES RESULTATS INTERMEDIAIRES. LES EVALUATIONS DES RESULTATS SONT FAITES PAR UN MICRO-PROCESSEUR PR ASSOCIE A DES MEMOIRES M QUI PEUVENT ETRE PROGRAMMEES SELON DIFFERENTS TYPES DE SIGNALISATION. APPLICATION PRINCIPALE AUX SYSTEMES TELEPHONIQUES A COMMUTATION NUMERIQUE.
FR8009534A 1979-04-27 1980-04-28 Systeme de signalisation numerique Expired FR2455405B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7903346A NL7903346A (nl) 1979-04-27 1979-04-27 Digitaal signaleringsstelsel.

Publications (2)

Publication Number Publication Date
FR2455405A1 true FR2455405A1 (fr) 1980-11-21
FR2455405B1 FR2455405B1 (fr) 1987-08-07

Family

ID=19833070

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8009534A Expired FR2455405B1 (fr) 1979-04-27 1980-04-28 Systeme de signalisation numerique

Country Status (13)

Country Link
US (1) US4355405A (fr)
JP (1) JPS55159688A (fr)
AR (1) AR228738A1 (fr)
AU (1) AU539806B2 (fr)
BE (1) BE882941A (fr)
BR (1) BR8002591A (fr)
CH (1) CH655419B (fr)
DE (1) DE3015567C2 (fr)
ES (1) ES8101290A1 (fr)
FR (1) FR2455405B1 (fr)
IT (1) IT1196912B (fr)
MX (1) MX149459A (fr)
NL (1) NL7903346A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512306A1 (fr) * 1981-08-27 1983-03-04 Telecommunications Sa Dispositif numerique de reconnaissance de frequences
FR2519823A1 (fr) * 1982-01-08 1983-07-18 Philips Nv Procede et dispositif pour la detection de signaux de code de tonalite a plusieurs frequences
EP0213651A1 (fr) * 1985-07-12 1987-03-11 Koninklijke Philips Electronics N.V. Equipement de réception d'un nombre de combinaisons de fréquences prédéterminées différentes de composants de signalisation à fréquences vocales sous la protection d'une fonction de garde contre les signaux sporadiques et de la voix

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD259987A3 (de) * 1986-07-07 1988-09-14 Rft Nachrichtenelektronik Albe Verfahren und anordnung zum sprachschutz in mfc-tastwahlempfaengern
US4845499A (en) * 1987-11-02 1989-07-04 Ag Communication Systems Corporation Method for generating PCM logarithmic values from linear values
GB2241853A (en) * 1990-03-08 1991-09-11 British Aerospace Digital signal processing apparatus comprising architectures for digital multiplexing and demultiplexing.
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
US5602874A (en) * 1994-12-29 1997-02-11 Motorola, Inc. Method and apparatus for reducing quantization noise
US5854813A (en) * 1994-12-29 1998-12-29 Motorola, Inc. Multiple access up converter/modulator and method
KR100203318B1 (ko) * 1994-12-29 1999-06-15 모토로라, 인크 광대역 주파수 신호 디지타이저 및 방법
US5668836A (en) * 1994-12-29 1997-09-16 Motorola, Inc. Split frequency band signal digitizer and method
US5754597A (en) * 1994-12-29 1998-05-19 Motorola, Inc. Method and apparatus for routing a digitized RF signal to a plurality of paths
US5748683A (en) * 1994-12-29 1998-05-05 Motorola, Inc. Multi-channel transceiver having an adaptive antenna array and method
US5710763A (en) * 1995-07-31 1998-01-20 Motorola, Inc. Filtered fast Fourier transmultiplexer and method
GB2330727B (en) * 1997-10-24 2002-10-09 Mitel Corp Tone and periodical signal detection
US7623826B2 (en) * 2004-07-22 2009-11-24 Frank Pergal Wireless repeater with arbitrary programmable selectivity
US10133549B1 (en) * 2017-12-04 2018-11-20 Kyocera Document Solutions Inc. Systems and methods for implementing a synchronous FIFO with registered outputs

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150232A (en) * 1961-02-06 1964-09-22 Edward R Schmidt Variable damping circuits
US3436487A (en) * 1965-09-14 1969-04-01 Bell Telephone Labor Inc Telephone signaling arrangement
FR2141502B1 (fr) * 1971-06-01 1973-06-29 Ibm France
US3863030A (en) * 1972-06-01 1975-01-28 Gte Automatic Electric Lab Inc Pcm tone receiver using digital spectrum analysis
FR2191827A5 (fr) * 1972-06-27 1974-02-01 Socotel Mixte D Veloppem
US3824471A (en) * 1972-12-01 1974-07-16 Gte Automatic Electric Lab Inc Pcm tone receiver using floating-point digital spectrum analysis
NL7312548A (nl) * 1973-09-12 1975-03-14 Bell Telephone Mfg Multifrequent signaleringsstelsel.
FR2295665A1 (fr) * 1974-12-18 1976-07-16 Labo Cent Telecommunicat Recepteur numerique de signaux multifrequences
FR2299769A1 (fr) * 1975-01-31 1976-08-27 Telecommunications Sa Procede d'application
DE2553258C3 (de) * 1975-11-27 1980-07-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen digitalen Mehrfrequenz-Zeichenempfänger
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512306A1 (fr) * 1981-08-27 1983-03-04 Telecommunications Sa Dispositif numerique de reconnaissance de frequences
EP0073719A1 (fr) * 1981-08-27 1983-03-09 Societe Anonyme De Telecommunications (S.A.T.) Dispositif numérique de reconnaissance de fréquences
FR2519823A1 (fr) * 1982-01-08 1983-07-18 Philips Nv Procede et dispositif pour la detection de signaux de code de tonalite a plusieurs frequences
EP0213651A1 (fr) * 1985-07-12 1987-03-11 Koninklijke Philips Electronics N.V. Equipement de réception d'un nombre de combinaisons de fréquences prédéterminées différentes de composants de signalisation à fréquences vocales sous la protection d'une fonction de garde contre les signaux sporadiques et de la voix

Also Published As

Publication number Publication date
AU539806B2 (en) 1984-10-18
BR8002591A (pt) 1980-12-09
IT8021664A0 (it) 1980-04-24
DE3015567A1 (de) 1980-11-13
ES490898A0 (es) 1980-12-01
NL7903346A (nl) 1980-10-29
IT1196912B (it) 1988-11-25
ES8101290A1 (es) 1980-12-01
MX149459A (es) 1983-11-08
BE882941A (nl) 1980-10-24
JPH0127640B2 (fr) 1989-05-30
FR2455405B1 (fr) 1987-08-07
AR228738A1 (es) 1983-04-15
US4355405A (en) 1982-10-19
JPS55159688A (en) 1980-12-11
DE3015567C2 (de) 1986-09-11
CH655419B (fr) 1986-04-15
AU5767180A (en) 1980-10-30

Similar Documents

Publication Publication Date Title
FR2455405A1 (fr) Systeme de signalisation numerique
GR3017473T3 (en) Prevention of biofouling of reverse osmosis membranes.
FR2331219B1 (fr)
ZA704834B (en) Reverse osmosis membrane assemblies
ES436640A1 (es) Una red de conmutacion por multiplexion por division de tiempo para mensajes codificados.
JPS55137761A (en) Composite private unit
DE1223904B (de) Zeitmultiplex-Nachrichten-UEbertragungssystem mit Pulscodemodulation
CA1003570A (en) Pcm tone receiver using floating-point digital spectrum analysis
AT332737B (de) Drainagesystem fur pressen fur die saftgewinnung aus obst, trauben u.dgl. pressgut
RU96105323A (ru) Мясной паштет для детского питания
GB1030283A (en) Electrical distribution systems
JPS55138955A (en) Time sharing channel interruption system
DE3266187D1 (en) Reverse osmosis membrane quenching
ATE17424T1 (de) Schaltungsanordnung zur umsetzung von digitalsignalen, insbesondere von pcm-signalen, in diesen entsprechende analog-signale, mit einem r- 2r-kettennetzwerk.
DE610606C (de) Verfahren zur Unterwasserschallsignalisierung
AT377401B (de) Verfahren zur anwendung beim durchschalten einzelner oder mehrerer nebeneinander liegender sprachkanaele in traegerfrequenzsystemen
AT312690B (de) Verfahren und Schaltungsanordnung zur Übertragung von Nachrichtensignalen, insbesondere PCM-Nachrichtensignalen, von einer Sendestelle zu einer Empfangsstelle nach dem Zeitmultiplexprinzip
Cordner Australia's Northern Territory euthanasia law passed.
GB1239714A (fr)
Wheelwright Muzzling science.
Holden Microbe attacking coral reefs.
CH464999A (de) Verfahren und Schaltungsanordnung zur Überwachung der Auslösezeit für Fernübertragungen in Fernmelde-, insbesondere Fernschreibwählvermittlungsanlagen
MD614F2 (en) Process of spirulina biomass produc-tion
Ross et al. Help for America's cities?
BG100577A (en) Toothpaste

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse