FR2579393B1 - Circuit integrable monolithiquement pour la mesure de courants longitudinaux et transversaux dans une ligne de transmission bifilaire - Google Patents

Circuit integrable monolithiquement pour la mesure de courants longitudinaux et transversaux dans une ligne de transmission bifilaire

Info

Publication number
FR2579393B1
FR2579393B1 FR8603802A FR8603802A FR2579393B1 FR 2579393 B1 FR2579393 B1 FR 2579393B1 FR 8603802 A FR8603802 A FR 8603802A FR 8603802 A FR8603802 A FR 8603802A FR 2579393 B1 FR2579393 B1 FR 2579393B1
Authority
FR
France
Prior art keywords
measurement
longitudinal
current
cross
integrated circuit
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
FR8603802A
Other languages
English (en)
Other versions
FR2579393A1 (fr
Inventor
Marco Siligoni
Ferdinando Lari
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.)
STMicroelectronics SRL
Original Assignee
SGS Microelettronica SpA
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 SGS Microelettronica SpA filed Critical SGS Microelettronica SpA
Publication of FR2579393A1 publication Critical patent/FR2579393A1/fr
Application granted granted Critical
Publication of FR2579393B1 publication Critical patent/FR2579393B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR8603802A 1985-03-20 1986-03-18 Circuit integrable monolithiquement pour la mesure de courants longitudinaux et transversaux dans une ligne de transmission bifilaire Expired FR2579393B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8519983A IT1215254B (it) 1985-03-20 1985-03-20 Circuito, integrabile monoliticamente, per la misura di correnti longitudinali e trasversali in una linea ditrasmissione bifilare.

Publications (2)

Publication Number Publication Date
FR2579393A1 FR2579393A1 (fr) 1986-09-26
FR2579393B1 true FR2579393B1 (fr) 1989-06-02

Family

ID=11162848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8603802A Expired FR2579393B1 (fr) 1985-03-20 1986-03-18 Circuit integrable monolithiquement pour la mesure de courants longitudinaux et transversaux dans une ligne de transmission bifilaire

Country Status (6)

Country Link
US (1) US4782507A (fr)
JP (1) JPH0671343B2 (fr)
DE (1) DE3609249C2 (fr)
FR (1) FR2579393B1 (fr)
GB (1) GB2173072B (fr)
IT (1) IT1215254B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1214603B (it) * 1985-04-30 1990-01-18 Ates Componenti Elettron Circuito telefonico, integrabile monoliticamente, perl'alimentazione di una linea telefonica d'utente.
CA1291836C (fr) * 1987-06-17 1991-11-05 Kenji Takato Circuit d'alimentation pour accumulateur
IT1223618B (it) * 1987-12-28 1990-09-29 Sgs Thomson Microelectronics Circuito di interfaccia tra linea telefonica d'utente ed organi di comando centrale, con limitazione del consumo di corrente in caso di cavo a terra
IT1252125B (it) * 1991-10-23 1995-06-05 Sgs Thomson Microelectronics Metodo e dispositivo circuitale per misurare in condizioni di esercizio parametri operativi di un circuito di interfaccia e di una linea telefonica d'utente ad esse collegata
EP0622943B1 (fr) * 1993-04-30 2001-09-12 STMicroelectronics S.r.l. Circuit de contrôle de puissance pour un circuit d'interface de ligne d'abonné
US5483573A (en) * 1993-06-30 1996-01-09 Keptel, Inc. Electric circuit connector with auto-termination
EP0637161B1 (fr) * 1993-07-29 1998-05-13 STMicroelectronics S.r.l. Circuit intégré de ligne d'abonné avec inverseur lent de polarité
SE503688C2 (sv) * 1994-11-10 1996-07-29 Ericsson Telefon Ab L M Drivsteg
US5649009A (en) * 1994-11-14 1997-07-15 Harris Corporation Differential longitudinal amplifier for a subscriber line interface circuit
US5812658A (en) * 1995-01-30 1998-09-22 Harris Corp. Method and circuit for failsafe switch-hook detection during fault in a telephone system
EP0831632A3 (fr) * 1996-09-24 2003-03-19 Siemens Aktiengesellschaft Montage pour indication d'erreur sur des lignes d'abonné analogiques de postes téléphoniques d'urgence dans des centraux téléphoniques numériques à division temporelle
US7486786B2 (en) * 2004-09-29 2009-02-03 Stmicroelectronics, Inc. Apparatus and method for performing impedance synthesis in a transmitter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290671A (en) * 1963-04-29 1966-12-06 Ibm Byte decoder
DE2816213A1 (de) * 1977-04-18 1978-10-26 Exxon Research Engineering Co Verfahren zum schmieren von beruehrungsflaechen bei hohen temperaturen und/oder oxidationsbedingungen sowie schmiermittel zur durchfuehrung des verfahrens
US4203012A (en) * 1977-07-14 1980-05-13 Boxall Frank S Hybrid circuit using current mirror circuits
FR2437757A2 (fr) * 1978-06-26 1980-04-25 Trt Telecom Radio Electr Joncteur d'abonne destine a assurer un couplage en deux fils ou quatre fils avec un central telephonique
NL7903665A (nl) * 1979-05-10 1980-11-12 Philips Nv Aansluitschakeling voor een telefoonlijn.
US4300023A (en) * 1979-08-13 1981-11-10 Motorola, Inc. Hybrid circuit
FR2481035A1 (fr) * 1980-04-18 1981-10-23 Trt Telecom Radio Electr Perfectionnements aux joncteurs d'abonne electroniques
JPS56169935A (en) * 1980-06-03 1981-12-26 Toshiba Corp Digital-to-analog converting circuit
US4314196A (en) * 1980-07-14 1982-02-02 Motorola Inc. Current limiting circuit
US4406929A (en) * 1981-02-26 1983-09-27 Motorola Inc. Hook status detector for a subscriber loop interface circuit
US4431874A (en) * 1981-09-24 1984-02-14 Motorola, Inc. Balanced current multiplier circuit for a subscriber loop interface circuit

Also Published As

Publication number Publication date
IT1215254B (it) 1990-01-31
DE3609249C2 (de) 1996-10-02
US4782507A (en) 1988-11-01
GB2173072A (en) 1986-10-01
DE3609249A1 (de) 1986-09-25
JPS61218296A (ja) 1986-09-27
GB2173072B (en) 1989-08-02
GB8606960D0 (en) 1986-04-23
IT8519983A0 (it) 1985-03-20
JPH0671343B2 (ja) 1994-09-07
FR2579393A1 (fr) 1986-09-26

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Legal Events

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D6 Patent endorsed licences of rights
ST Notification of lapse