FR2469058A1 - Circuit de correction d'erreur pour un systeme de communication en boucle - Google Patents

Circuit de correction d'erreur pour un systeme de communication en boucle

Info

Publication number
FR2469058A1
FR2469058A1 FR8023504A FR8023504A FR2469058A1 FR 2469058 A1 FR2469058 A1 FR 2469058A1 FR 8023504 A FR8023504 A FR 8023504A FR 8023504 A FR8023504 A FR 8023504A FR 2469058 A1 FR2469058 A1 FR 2469058A1
Authority
FR
France
Prior art keywords
communication system
error correction
correction circuit
loop communication
loop
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
FR8023504A
Other languages
English (en)
Other versions
FR2469058B1 (fr
Inventor
Charles Richmond Baugh
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2469058A1 publication Critical patent/FR2469058A1/fr
Application granted granted Critical
Publication of FR2469058B1 publication Critical patent/FR2469058B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/025—Time division multiplex systems, e.g. loop systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

L'invention concerne les télécommunications. Un circuit de protection contre les erreurs 30 ou 50 est intercalé dans la boucle 12 d'un système de mise en conférence d'un certain nombre de postes 12-1,... 12-n). Ce circuit réduit d'un facteur constant tous les signaux qui le traversent Les signaux qui ne sont pas régénérés par des signaux d'entrée valides appliqués à la boucle sont réduits à zéro en quelques cycles. Application aux systèmes de conférence téléphonique.
FR8023504A 1979-11-05 1980-11-04 Circuit de correction d'erreur pour un systeme de communication en boucle Granted FR2469058A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/091,406 US4288871A (en) 1979-11-05 1979-11-05 Digital loop conferencing signal correction arrangement

Publications (2)

Publication Number Publication Date
FR2469058A1 true FR2469058A1 (fr) 1981-05-08
FR2469058B1 FR2469058B1 (fr) 1985-04-19

Family

ID=22227610

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8023504A Granted FR2469058A1 (fr) 1979-11-05 1980-11-04 Circuit de correction d'erreur pour un systeme de communication en boucle

Country Status (6)

Country Link
US (1) US4288871A (fr)
JP (1) JPS56131241A (fr)
CA (1) CA1152593A (fr)
DE (1) DE3040677C2 (fr)
FR (1) FR2469058A1 (fr)
GB (1) GB2063019B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745757A (en) * 1980-09-03 1982-03-15 Hitachi Ltd Ring type communication system of equal level
US4416007A (en) * 1981-11-20 1983-11-15 Bell Telephone Laboratories, Incorporated Digital conferencing method and arrangement
US4482998A (en) * 1982-05-27 1984-11-13 At&T Bell Laboratories Method and apparatus for improving the quality of communication in a digital conference arrangement
US4763254A (en) * 1983-05-26 1988-08-09 Hitachi, Ltd. Information processing system with data storage on plural loop transmission line
US4535445A (en) * 1983-06-16 1985-08-13 At&T Information Systems Conferencing system adaptive signal conditioner
IT1182404B (it) * 1985-02-04 1987-10-05 Fiat Ricerche Impianto per il collegamento di dispositivi sensori con dispositivi attuatori
SE449152B (sv) * 1986-03-19 1987-04-06 Paul Gosta Wilhelm Rosen Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling
DE3939044A1 (de) * 1989-11-25 1991-05-29 Philips Patentverwaltung Schaltungsanordnung zur herstellung von konferenzverbindungen
NO169209C (no) * 1989-12-22 1992-05-20 Alcatel Stk As Fremgangsmaate og system for etablering av konferanseforbindelse.
NO169208C (no) * 1989-12-22 1992-05-20 Alcatel Stk As Fremgangsmaate og node for etablering av konferanseforbindelse
WO1992012586A1 (fr) * 1991-09-23 1992-07-23 Scott Savage Concentrateur de cables en boucle
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
US6226299B1 (en) * 1999-01-20 2001-05-01 Emulex Corporation Sanitizing fibre channel frames

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034371A1 (fr) * 1969-03-21 1970-12-11 Lignes Telegraph Telephon
CH550521A (de) * 1972-07-04 1974-06-14 Hasler Ag Verfahren zur nachrichtenuebertragung zwischen teilnehmerstellen.
DE2445129B2 (de) * 1974-09-20 1977-03-03 Siemens AG, 1000 Berlin und 8000 München Verfahren zum verbinden wenigstens dreier teilnehmer einer zeitmultiplexfernmelde-, insbesondere pcm-fernsprechvermittlungsanlage
DE2445092B1 (de) * 1974-09-20 1976-01-22 Siemens Ag Verfahren zum verbinden wenigstens dreier teilnehmer einer zeitmultiplex- fernmelde-, insbesondere pcm-fernsprechvermittlungsanlage

Also Published As

Publication number Publication date
CA1152593A (fr) 1983-08-23
US4288871A (en) 1981-09-08
DE3040677C2 (de) 1986-03-27
JPS56131241A (en) 1981-10-14
DE3040677A1 (de) 1981-05-14
FR2469058B1 (fr) 1985-04-19
GB2063019B (en) 1984-06-20
GB2063019A (en) 1981-05-28

Similar Documents

Publication Publication Date Title
FR2469058A1 (fr) Circuit de correction d'erreur pour un systeme de communication en boucle
CA2081535C (fr) Methode et dispositif pour la detection des signaux de commande
CA2224934A1 (fr) Architecture a recepteur en rateau pour demodulateur mobile dans un systeme de telecommunications a acces multiple par code de repartition
GB1203801A (en) Improvements in or relating to echo suppressors
EP0817522A3 (fr) Système de communication cellulaire
NO980871L (no) Fremgangsmåte for mottaking, samt mottaker
SE9400967D0 (sv) Intelligent Mobile Telecommunications Network Arrangement
EP0111411A3 (fr) Système de communications
US3941935A (en) Centralized debiting system for TDM telecommunication network
FR2376584A1 (fr) Dispositif de transmission d'informations destine a relier plusieurs abonnes a un central
FR3091439B1 (fr) Commutateur pour un système de communication avionique et système de communication avionique comportant un tel commutateur
DK153791D0 (da) Fremgangsmaade til undertrykkelse af rin i kohaerente optiske systemer, saasom kommunikationsmodtagere
GB1218902A (en) A method of hunting free connection paths in a telecommunications network
AU3806195A (en) Ranging process for point-to-multipoint communication systems
SU1138957A1 (ru) Коммутационное устройство дл конференц-св зи
RU2101758C1 (ru) Устройство для сопряжения абонентов с общей магистралью
SU1169199A1 (ru) Цифровой приемник многочастотной сигнализации
SU687610A1 (ru) Регенератор многоканальной цифровой системы св зи
ES2135422T3 (es) Metodo y sistema para controlar la distancia minima entre errores sucesivos en transmision de radio digital.
KR100189633B1 (ko) 티알에스(trs) 시스템의 음성 및 제어 데이터 송수신장치
GB1078321A (en) Circuit arrangements to indicate the call number of subscriber stations in telephoneexchanges
GB588564A (en) Improvements in or relating to telephone systems
RU1789055C (ru) Устройство цифровой распределенной конференц-св зи
EP0321153A3 (fr) Circuit annuleur et système de transmission
JPH01144758A (ja) 電話交換機方式

Legal Events

Date Code Title Description
ST Notification of lapse