FR2298236A1 - Equilibreur automatique pour transformateur differentiel relie a un cable telephonique - Google Patents

Equilibreur automatique pour transformateur differentiel relie a un cable telephonique

Info

Publication number
FR2298236A1
FR2298236A1 FR7600604A FR7600604A FR2298236A1 FR 2298236 A1 FR2298236 A1 FR 2298236A1 FR 7600604 A FR7600604 A FR 7600604A FR 7600604 A FR7600604 A FR 7600604A FR 2298236 A1 FR2298236 A1 FR 2298236A1
Authority
FR
France
Prior art keywords
differential transformer
transformer connected
telephone cable
automatic balancer
balancer
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
FR7600604A
Other languages
English (en)
Other versions
FR2298236B1 (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 FR2298236A1 publication Critical patent/FR2298236A1/fr
Application granted granted Critical
Publication of FR2298236B1 publication Critical patent/FR2298236B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/30—Reducing interference caused by unbalanced currents in a normally balanced line
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/581—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer
    • H04B1/582—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer with automatic balancing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Networks Using Active Elements (AREA)
FR7600604A 1975-01-16 1976-01-12 Equilibreur automatique pour transformateur differentiel relie a un cable telephonique Granted FR2298236A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/541,415 US3982080A (en) 1975-01-16 1975-01-16 Automatic cable balancing network

Publications (2)

Publication Number Publication Date
FR2298236A1 true FR2298236A1 (fr) 1976-08-13
FR2298236B1 FR2298236B1 (fr) 1978-08-18

Family

ID=24159502

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7600604A Granted FR2298236A1 (fr) 1975-01-16 1976-01-12 Equilibreur automatique pour transformateur differentiel relie a un cable telephonique

Country Status (12)

Country Link
US (1) US3982080A (fr)
JP (1) JPS5199447A (fr)
AU (1) AU505254B2 (fr)
BE (1) BE837480A (fr)
CA (1) CA1041241A (fr)
DE (1) DE2601445A1 (fr)
ES (1) ES444366A1 (fr)
FR (1) FR2298236A1 (fr)
GB (1) GB1514055A (fr)
IT (1) IT1055803B (fr)
NL (1) NL7600260A (fr)
SE (1) SE408358B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714803B1 (de) * 1977-04-02 1978-08-03 Standard Elek K Lorenz Ag Gabelschaltung zur Zweidraht-Vollduplexuebertragung von Digitalsignalen
JPS54136253A (en) * 1978-04-14 1979-10-23 Nec Corp Adaptive type electronic hybrid circuit
US4174470A (en) * 1978-10-10 1979-11-13 Bell Telephone Laboratories, Incorporated Electronic hybrid
US4275276A (en) * 1979-08-06 1981-06-23 Bell Telephone Laboratories, Incorporated Automatically adjustable bidirectional-to-unidirectional transmission network
US4278848A (en) * 1979-08-06 1981-07-14 Bell Telephone Laboratories, Incorporated Automatically adjustable bidirectional-to-unidirectional transmission network
US4276450A (en) * 1979-09-05 1981-06-30 Northern Telecom Limited Method and apparatus for improving telephone hybrid network
SE419924B (sv) * 1980-07-01 1981-08-31 Ellemtel Utvecklings Ab Anordning for instellning av ett adaptivt digitalt balansfilter ingaende i en abonnentenhet
US5305378A (en) * 1980-01-07 1994-04-19 Telefonaktiebolaget Lm Ericsson Arrangement for adjusting an adaptive digital filter included in a subscriber unit
US4368362A (en) * 1980-07-28 1983-01-11 Bell Telephone Laboratories, Incorporated Automatic telephone loaded/nonloaded facility type identification circuit
US4365119A (en) * 1980-07-28 1982-12-21 Bell Telephone Laboratories, Incorporated Automatically adjustable bidirectional-to-unidirectional transmission network
US4368361A (en) * 1980-07-28 1983-01-11 Bell Telephone Laboratories, Incorporated Automatically adjustable bidirectional-to-unidirectional transmission network
GB2139055B (en) * 1983-04-28 1986-10-01 Darome Inc Automatic nulling teleconferencing circuit
DE3522238A1 (de) * 1985-06-21 1987-01-02 Neumann Elektronik Gmbh Einrichtung zur anpassung einer in einer fernmeldeleitung angeordneten bidirektionalen verstaerkerschaltung an die fernmeldeleitung
DE3640127A1 (de) * 1986-11-25 1988-06-01 Standard Elektrik Lorenz Ag Elektronische gabelschaltung
US4910768A (en) * 1988-08-02 1990-03-20 The Inteleplex Corporation Automatic balancing circuit for longitudinal transmission system
DE3942758A1 (de) * 1989-12-23 1991-06-27 Standard Elektrik Lorenz Ag Nachbildung einer komplexen impedanz und schnittstelle mit einer solchen nachbildung
US5187742A (en) * 1990-01-12 1993-02-16 Codex Corporation Circuitry for interfacing telecommunications equipment to a communication channel
US5172410A (en) * 1990-04-26 1992-12-15 Sound Control Technologies, Inc. Conference telephone system and method
US5131033A (en) * 1990-05-15 1992-07-14 Xel Communications, Inc. Sealing current generator for a telephone circuit
US5333194A (en) * 1990-10-15 1994-07-26 Glenayre Electronics, Inc. Autoequalizing bidirectional-to-unidirectional hybrid network
US5618591A (en) * 1995-05-15 1997-04-08 Fuse Co. Method of coating an inside of a pipe or tube
US6400772B1 (en) 1998-06-16 2002-06-04 Rc Networks Line interface and method for detecting and eliminating an impedance mismatch between a transceiver and a transmission line
US6298046B1 (en) 1998-08-28 2001-10-02 Rc Networks Adjustable balancing circuit for an adaptive hybrid and method of adjusting the same
US6973183B1 (en) * 2001-03-01 2005-12-06 Garcia John D Method and apparatus for dynamically matching impedance
GB0404911D0 (en) * 2004-03-04 2004-04-07 Mitel Networks Corp Method of selecting impedance setting for loop start trunk line

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302374A (en) * 1941-02-25 1942-11-17 Bell Telephone Labor Inc Two-way signal transmission system
US2303419A (en) * 1941-06-06 1942-12-01 Bell Telephone Labor Inc Two-way signal transmission system
US3178521A (en) * 1962-11-15 1965-04-13 Bell Telephone Labor Inc Dynamically balanced telephone network
US3824501A (en) * 1973-07-12 1974-07-16 Bell Telephone Labor Inc Automatic cable equalizer
US3875350A (en) * 1973-11-05 1975-04-01 Gte Automatic Electric Lab Inc Self-balancing hybrid circuit

Also Published As

Publication number Publication date
NL7600260A (nl) 1976-07-20
USB541415I5 (fr) 1976-02-03
US3982080A (en) 1976-09-21
SE7600123L (sv) 1976-07-19
DE2601445A1 (de) 1976-07-22
BE837480A (fr) 1976-05-03
AU505254B2 (en) 1979-11-15
FR2298236B1 (fr) 1978-08-18
IT1055803B (it) 1982-01-11
AU1020976A (en) 1977-07-21
SE408358B (sv) 1979-06-05
ES444366A1 (es) 1977-05-16
GB1514055A (en) 1978-06-14
JPS5199447A (fr) 1976-09-02
CA1041241A (fr) 1978-10-24

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Legal Events

Date Code Title Description
ST Notification of lapse