JPS59231931A - ２線−４線変換回路 - Google Patents

２線−４線変換回路

Info

Publication number
JPS59231931A
JPS59231931A JP10620783A JP10620783A JPS59231931A JP S59231931 A JPS59231931 A JP S59231931A JP 10620783 A JP10620783 A JP 10620783A JP 10620783 A JP10620783 A JP 10620783A JP S59231931 A JPS59231931 A JP S59231931A
Authority
JP
Japan
Prior art keywords
signal
wire
line
impedance
input
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
JP10620783A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6331970B2 (da
Inventor
Masanobu Arai
正伸 新井
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10620783A priority Critical patent/JPS59231931A/ja
Publication of JPS59231931A publication Critical patent/JPS59231931A/ja
Publication of JPS6331970B2 publication Critical patent/JPS6331970B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP10620783A 1983-06-14 1983-06-14 ２線−４線変換回路 Granted JPS59231931A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10620783A JPS59231931A (ja) 1983-06-14 1983-06-14 ２線−４線変換回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10620783A JPS59231931A (ja) 1983-06-14 1983-06-14 ２線−４線変換回路

Publications (2)

Publication Number Publication Date
JPS59231931A true JPS59231931A (ja) 1984-12-26
JPS6331970B2 JPS6331970B2 (da) 1988-06-28

Family

ID=14427709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10620783A Granted JPS59231931A (ja) 1983-06-14 1983-06-14 ２線−４線変換回路

Country Status (1)

Country Link
JP (1) JPS59231931A (da)

Also Published As

Publication number Publication date
JPS6331970B2 (da) 1988-06-28

Similar Documents

Publication Publication Date Title
JP2645022B2 (ja) 加入者回路
US5282157A (en) Input impedance derived from a transfer network
US4283604A (en) Current source circuits with common mode noise rejection
GB1563541A (en) Signal transmission circuit
US3855431A (en) Electronic hybrid amplifier
US20010021250A1 (en) Method and device for echo cancelling
US3889072A (en) Bi-directional amplification apparatus
JPH0671343B2 (ja) ２線式伝送路中の縦及び横方向電流測定回路
CA2356952A1 (en) A method and apparatus for an improved analog echo canceller
US4418249A (en) Four-wire terminating circuit
JPS59231931A (ja) ２線−４線変換回路
US6956944B1 (en) Method and apparatus for compensating for an echo signal component in telecommunication systems
US4034166A (en) Transmission networks for telephone system
US6757383B1 (en) Compact cable balance network for echo-cancelling, and method for optimizing transhybrid loss and method and apparatus for circuit simulation
JPS59231930A (ja) ２線−４線変換回路
EP1089450B1 (en) Telephone line interface circuit
US5293421A (en) Summing amplifier with a complex weighting factor and interface including such a summing amplifier
JP3442227B2 (ja) 平衡型音声送受信回路
US5943392A (en) Device for measuring echo return loss in a two-two wire line system
JPS637691B2 (da)
JPS6230546B2 (da)
JP3494468B2 (ja) ハイブリッド回路及びこれを用いた装置
JPH0379893B2 (da)
JPH01826A (ja) エコ−キャンセラ−装置
JPH0462240B2 (da)