JPS62173864U - - Google Patents

Info

Publication number
JPS62173864U
JPS62173864U JP1987053346U JP5334687U JPS62173864U JP S62173864 U JPS62173864 U JP S62173864U JP 1987053346 U JP1987053346 U JP 1987053346U JP 5334687 U JP5334687 U JP 5334687U JP S62173864 U JPS62173864 U JP S62173864U
Authority
JP
Japan
Prior art keywords
impedance
amplifying means
input
switching circuit
line
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
JP1987053346U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0422595Y2 (US08124630-20120228-C00152.png
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 filed Critical
Publication of JPS62173864U publication Critical patent/JPS62173864U/ja
Application granted granted Critical
Publication of JPH0422595Y2 publication Critical patent/JPH0422595Y2/ja
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
    • H04B1/38—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
    • H04B1/586—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 an electronic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Electronic Switches (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
JP1987053346U 1986-04-09 1987-04-08 Expired JPH0422595Y2 (US08124630-20120228-C00152.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000506245A CA1241784A (en) 1986-04-09 1986-04-09 Circuit for switching between balanced networks

Publications (2)

Publication Number Publication Date
JPS62173864U true JPS62173864U (US08124630-20120228-C00152.png) 1987-11-05
JPH0422595Y2 JPH0422595Y2 (US08124630-20120228-C00152.png) 1992-05-25

Family

ID=4132848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987053346U Expired JPH0422595Y2 (US08124630-20120228-C00152.png) 1986-04-09 1987-04-08

Country Status (8)

Country Link
US (1) US4742540A (US08124630-20120228-C00152.png)
JP (1) JPH0422595Y2 (US08124630-20120228-C00152.png)
CN (1) CN87100774A (US08124630-20120228-C00152.png)
CA (1) CA1241784A (US08124630-20120228-C00152.png)
DE (1) DE3701688A1 (US08124630-20120228-C00152.png)
FR (1) FR2599917A1 (US08124630-20120228-C00152.png)
GB (1) GB2189116B (US08124630-20120228-C00152.png)
IT (1) IT1198189B (US08124630-20120228-C00152.png)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172409A (en) * 1990-07-02 1992-12-15 Motorola, Inc. Precision FET control loop
JP3086512B2 (ja) * 1990-11-14 2000-09-11 エリクソン−ジーイー モービル コミュニケーションズ ホールディング インコーポレイテッド 送信機及びその電力増幅回路
TW198778B (US08124630-20120228-C00152.png) * 1991-04-29 1993-01-21 Philips Nv
US5249225A (en) * 1991-10-25 1993-09-28 Coherent Communications Systems Corp. Self-balancing hybrid using digitally programmable attenuator for variable impedance elements
EP0677938A1 (en) * 1994-04-14 1995-10-18 ALCATEL BELL Naamloze Vennootschap Signal coupler
US6111861A (en) * 1996-12-30 2000-08-29 Siemens Information And Communication Networks, Inc. Method and system for managing high speed data communication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5165807A (ja) * 1974-12-05 1976-06-07 Nippon Telegraph & Telephone Bosokuonkairo
JPS60116261A (ja) * 1983-11-28 1985-06-22 Nec Corp 防側音回路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100515A (en) * 1977-05-05 1978-07-11 Wescom, Inc. Communication circuit having precision capacitor multiplier
US4276450A (en) * 1979-09-05 1981-06-30 Northern Telecom Limited Method and apparatus for improving telephone hybrid network
US4275270A (en) * 1979-11-29 1981-06-23 The Regents Of The University Of California Speech detector for use in an adaptive hybrid circuit
US4358643A (en) * 1980-04-21 1982-11-09 Siemens Corporation Two to four wire hybrid circuit
JPS5737937A (en) * 1980-08-15 1982-03-02 Hitachi Ltd Automatic hybrid circuit
US4361732A (en) * 1981-02-09 1982-11-30 Northern Telecom Limited Trunk interface circuit with current compensation
US4677667A (en) * 1985-08-29 1987-06-30 Gte Communication Systems Corporation Subscriber line circuit having improved AC impedance matching

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5165807A (ja) * 1974-12-05 1976-06-07 Nippon Telegraph & Telephone Bosokuonkairo
JPS60116261A (ja) * 1983-11-28 1985-06-22 Nec Corp 防側音回路

Also Published As

Publication number Publication date
CN87100774A (zh) 1987-10-21
CA1241784A (en) 1988-09-06
DE3701688C2 (US08124630-20120228-C00152.png) 1989-02-02
DE3701688A1 (de) 1987-10-15
FR2599917A1 (fr) 1987-12-11
IT8622487A0 (it) 1986-11-27
GB2189116A (en) 1987-10-14
GB2189116B (en) 1989-11-22
IT8622487A1 (it) 1988-05-27
US4742540A (en) 1988-05-03
JPH0422595Y2 (US08124630-20120228-C00152.png) 1992-05-25
GB8702076D0 (en) 1987-03-04
IT1198189B (it) 1988-12-21

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