FR2417221A1 - Systeme de communication a multiplexage temporel pourvu d'un circuit de reglage numerique ou niveau de transmission - Google Patents

Systeme de communication a multiplexage temporel pourvu d'un circuit de reglage numerique ou niveau de transmission

Info

Publication number
FR2417221A1
FR2417221A1 FR7903700A FR7903700A FR2417221A1 FR 2417221 A1 FR2417221 A1 FR 2417221A1 FR 7903700 A FR7903700 A FR 7903700A FR 7903700 A FR7903700 A FR 7903700A FR 2417221 A1 FR2417221 A1 FR 2417221A1
Authority
FR
France
Prior art keywords
communication system
transmission level
control circuit
system provided
digital control
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.)
Withdrawn
Application number
FR7903700A
Other languages
English (en)
Inventor
Michael John Gingell
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 FR2417221A1 publication Critical patent/FR2417221A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/002—Control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals

Landscapes

  • Time-Division Multiplex Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

L'invention concerne les systèmes de communication à multiplexage temporel. Elle a pour objet un circuit de réglage numérique du niveau de transmission comprenant essentiellement des moyens 80 pour recevoir en série des mots numériques représentant des voies du système de communication, un multiplicateur 82 pour pondérer chacun desdits mots à l'aide de coefficients, certains d'entre eux étant variables, afin de procurer un gain ou un affaiblissement, et des moyens pour sélectionner 86 les coefficients de pondération selon des niveaux de transmission prédéterminés à atteindre. L'invention est plus particulièrement applicable dans les systèmes de transmission téléphoniques.
FR7903700A 1978-02-14 1979-02-14 Systeme de communication a multiplexage temporel pourvu d'un circuit de reglage numerique ou niveau de transmission Withdrawn FR2417221A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5812/78A GB1596943A (en) 1978-02-14 1978-02-14 Level control of digital signals

Publications (1)

Publication Number Publication Date
FR2417221A1 true FR2417221A1 (fr) 1979-09-07

Family

ID=9803077

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7903700A Withdrawn FR2417221A1 (fr) 1978-02-14 1979-02-14 Systeme de communication a multiplexage temporel pourvu d'un circuit de reglage numerique ou niveau de transmission

Country Status (13)

Country Link
JP (1) JPS54114913A (fr)
AU (1) AU529904B2 (fr)
BE (1) BE874142A (fr)
BR (1) BR7900884A (fr)
DE (1) DE2905080A1 (fr)
DK (1) DK58979A (fr)
ES (1) ES477655A1 (fr)
FR (1) FR2417221A1 (fr)
GB (1) GB1596943A (fr)
MX (1) MX145798A (fr)
NL (1) NL7900757A (fr)
NO (1) NO148240C (fr)
SE (1) SE7901179L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471093A1 (fr) * 1979-11-28 1981-06-12 Int Standard Electric Corp Circuit et procede de commande de gain pour signal numerique du type utilise dans les systemes telephoniques a commutation numerique et joncteur de ligne equipe d'un tel circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107046A1 (de) * 1981-02-25 1982-09-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum verbinden von analog-signale abgebenden sendeeinrichtungen mit analog-signale aufnehmenden empfangseinrichtungen ueber eine zeitmultiplex-datenvermittlungsanlage
GB8322440D0 (en) * 1983-08-19 1983-09-21 Gen Electric Co Plc Frequency division multiplex transmission equipment
JP2704617B2 (ja) * 1987-09-01 1998-01-26 株式会社 高見沢サイバネティックス 小型地震計

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247858A1 (fr) * 1973-09-27 1975-05-09 Ibm France

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247858A1 (fr) * 1973-09-27 1975-05-09 Ibm France

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471093A1 (fr) * 1979-11-28 1981-06-12 Int Standard Electric Corp Circuit et procede de commande de gain pour signal numerique du type utilise dans les systemes telephoniques a commutation numerique et joncteur de ligne equipe d'un tel circuit

Also Published As

Publication number Publication date
AU529904B2 (en) 1983-06-23
GB1596943A (en) 1981-09-03
DE2905080A1 (de) 1979-09-20
ES477655A1 (es) 1979-10-16
NO148240C (no) 1983-08-31
NO148240B (no) 1983-05-24
NO790461L (no) 1979-08-15
BE874142A (fr) 1979-08-14
SE7901179L (sv) 1979-08-15
MX145798A (es) 1982-04-02
JPS54114913A (en) 1979-09-07
DK58979A (da) 1979-08-15
BR7900884A (pt) 1979-09-11
AU4406979A (en) 1979-08-23
NL7900757A (nl) 1979-08-16

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse