FR2505109B1 - Systeme de transmission numerique avec possibilite de commutation sur un canal de protection - Google Patents

Systeme de transmission numerique avec possibilite de commutation sur un canal de protection

Info

Publication number
FR2505109B1
FR2505109B1 FR8207043A FR8207043A FR2505109B1 FR 2505109 B1 FR2505109 B1 FR 2505109B1 FR 8207043 A FR8207043 A FR 8207043A FR 8207043 A FR8207043 A FR 8207043A FR 2505109 B1 FR2505109 B1 FR 2505109B1
Authority
FR
France
Prior art keywords
possibility
switching
transmission system
digital transmission
protection channel
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.)
Expired
Application number
FR8207043A
Other languages
English (en)
Other versions
FR2505109A1 (fr
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 FR2505109A1 publication Critical patent/FR2505109A1/fr
Application granted granted Critical
Publication of FR2505109B1 publication Critical patent/FR2505109B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FR8207043A 1981-04-30 1982-04-23 Systeme de transmission numerique avec possibilite de commutation sur un canal de protection Expired FR2505109B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/259,006 US4395772A (en) 1981-04-30 1981-04-30 Line protection switch controller

Publications (2)

Publication Number Publication Date
FR2505109A1 FR2505109A1 (fr) 1982-11-05
FR2505109B1 true FR2505109B1 (fr) 1985-06-28

Family

ID=22983098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8207043A Expired FR2505109B1 (fr) 1981-04-30 1982-04-23 Systeme de transmission numerique avec possibilite de commutation sur un canal de protection

Country Status (8)

Country Link
US (1) US4395772A (fr)
JP (1) JPS57185745A (fr)
CA (1) CA1173926A (fr)
DE (1) DE3215783A1 (fr)
FR (1) FR2505109B1 (fr)
IT (1) IT1159061B (fr)
NL (1) NL191003C (fr)
SE (1) SE454639B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514844A (en) * 1983-06-22 1985-04-30 Gte Automatic Electric Inc. Duplex digital span transmission circuit arrangement
DE3509511A1 (de) * 1985-03-16 1986-09-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und schaltungsanordnung zur phasensprungfreien durchschaltung von breitbandigen digitalsignalen in einem synchronen breitbandkommunikationsnetz
CA1249633A (fr) * 1985-12-11 1989-01-31 Hideaki Morimoto Dispositif de commutation de canaux
JPS62239736A (ja) * 1986-04-11 1987-10-20 Nec Corp 回線切替装置
JPH0624345B2 (ja) * 1986-04-28 1994-03-30 日本電気株式会社 予備回線監視回路
JPS6370632A (ja) * 1986-09-11 1988-03-30 Nec Corp 回線切替方式
US4829343A (en) * 1987-07-17 1989-05-09 American Telephone & Telegraph Company, At&T Bell Laboratories Hot electron transistor
US5175878A (en) * 1990-02-02 1992-12-29 At&T Bell Laboratories Radio network with switching arrangement for coupling radios to a selected antenna out of a plurality of antennas
DE4008502A1 (de) * 1990-03-16 1991-09-19 Hirschmann Richard Gmbh Co Verfahren zum mobilen empfang von digitalen signalen
US5051979A (en) * 1990-06-28 1991-09-24 At&T Bell Laboratories Method and apparatus for errorless switching
DE4031241A1 (de) * 1990-10-04 1992-04-09 Philips Patentverwaltung Digitales uebertragungssystem
JP3023705B2 (ja) * 1990-12-20 2000-03-21 富士通株式会社 予備チャンネル切替え装置および方法
JPH0831856B2 (ja) * 1991-08-16 1996-03-27 インターナショナル・ビジネス・マシーンズ・コーポレイション 故障信号搬送ラインを予備信号搬送ラインで置き換える装置及び方法
US5311551A (en) * 1992-01-24 1994-05-10 At&T Bell Laboratories Digital signal hardware protection switching
JP3434556B2 (ja) * 1994-01-10 2003-08-11 富士通株式会社 信号線切替え回路
ZA96474B (en) * 1995-03-27 1996-08-14 Alcatel Altech Telecoms Propri Error protection in transmission
US5742646A (en) * 1995-05-05 1998-04-21 Harris Corporation Method of selecting and switching signal paths in a digital communication system
US6151354A (en) * 1997-12-19 2000-11-21 Rockwell Science Center Multi-mode, multi-band, multi-user radio system architecture
US6327299B1 (en) * 1999-08-31 2001-12-04 Motorola, Inc. Method and system for measuring and adjusting the quality of an orthogonal transmit diversity signal in a wireless communications system

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213370A (en) * 1961-03-13 1965-10-19 Ibm Signal selecting system with switching at the interstice between data increments
BE731482A (fr) * 1968-05-15 1969-09-15
SE355709B (fr) * 1972-06-09 1973-04-30 Ericsson Telefon Ab L M
JPS5726014B2 (fr) * 1973-01-30 1982-06-02
US3878463A (en) * 1973-06-06 1975-04-15 Bell Telephone Labor Inc Automatic channel switching system
JPS5439093B2 (fr) * 1974-08-24 1979-11-26
SE7512401L (sv) * 1974-11-07 1976-05-10 Decca Ltd Dempsats for antenner
CA1059215A (fr) * 1974-12-24 1979-07-24 Hideki Saito Fonctionnement en diversite spatiale d'un systeme de telecommunication mic-amrt utilisant un satellite de communication stationnaire
JPS5542790B2 (fr) * 1975-01-09 1980-11-01
JPS5732535B2 (fr) * 1975-02-17 1982-07-12
US3991278A (en) * 1975-06-13 1976-11-09 Bell Telephone Laboratories, Incorporated Line protection switching system
US4143321A (en) * 1977-05-25 1979-03-06 The Boeing Co. Apparatus and process for grouping pulse signals according to source
US4234956A (en) * 1978-10-11 1980-11-18 The General Electric Company Limited Digital relay systems
US4246656A (en) * 1978-10-24 1981-01-20 Raytheon Company Diversity switch correlation system
JPS5588452A (en) * 1978-12-26 1980-07-04 Nec Corp Digital signal switching circuit for diversity receiver for digital radio communication

Also Published As

Publication number Publication date
US4395772A (en) 1983-07-26
NL8201802A (nl) 1982-11-16
FR2505109A1 (fr) 1982-11-05
DE3215783C2 (fr) 1987-04-16
CA1173926A (fr) 1984-09-04
SE8202461L (sv) 1982-10-31
IT1159061B (it) 1987-02-25
DE3215783A1 (de) 1982-11-25
NL191003C (nl) 1994-12-01
SE454639B (sv) 1988-05-16
JPS57185745A (en) 1982-11-16
IT8221006A0 (it) 1982-04-29
NL191003B (nl) 1994-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse