JPS5683155A - Line interface circuit - Google Patents

Line interface circuit

Info

Publication number
JPS5683155A
JPS5683155A JP15897179A JP15897179A JPS5683155A JP S5683155 A JPS5683155 A JP S5683155A JP 15897179 A JP15897179 A JP 15897179A JP 15897179 A JP15897179 A JP 15897179A JP S5683155 A JPS5683155 A JP S5683155A
Authority
JP
Japan
Prior art keywords
transmission
signal
reception
circuit
attenuator
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
JP15897179A
Other languages
Japanese (ja)
Other versions
JPS6112418B2 (en
Inventor
Makoto Chikuma
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15897179A priority Critical patent/JPS5683155A/en
Publication of JPS5683155A publication Critical patent/JPS5683155A/en
Publication of JPS6112418B2 publication Critical patent/JPS6112418B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To make excellent the reception operation for a reception signal from other stations, by decreasing the unbalanced bridge circuit due to the variance of equivalent impedance of transmission line, and preventing the transmission signal of station itself from being leaked to the reception side of the station itself. CONSTITUTION:A line interface is provided in the transmitter communicating with other transmitters, and the transmission/reception signal is separated with the bridge circuit B of the interface. An attenuator 4 is provided at the side where the equivalent impedance Z0 of the transmission line of the circuit B and the equivalent transmission signal SO2 from opposing parties are present. The attenuator 4 consists of impedances Z4, Z5 and Z6, and the impedance viewed from the transmission side is taken as Z7 and the impedance viewed from the circuit B side is taken as Z8, to attenuate the signal from the transmission line at the attenuator 4 for a given value. Further, the unbalancing of the circuit B and the mixing of the transmission signal SO1 of the station itselt to the amplifier A2 at the reception side are prevented, allowing to improve the reception operation.
JP15897179A 1979-12-07 1979-12-07 Line interface circuit Granted JPS5683155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15897179A JPS5683155A (en) 1979-12-07 1979-12-07 Line interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15897179A JPS5683155A (en) 1979-12-07 1979-12-07 Line interface circuit

Publications (2)

Publication Number Publication Date
JPS5683155A true JPS5683155A (en) 1981-07-07
JPS6112418B2 JPS6112418B2 (en) 1986-04-08

Family

ID=15683368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15897179A Granted JPS5683155A (en) 1979-12-07 1979-12-07 Line interface circuit

Country Status (1)

Country Link
JP (1) JPS5683155A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336417U (en) * 1986-08-19 1988-03-09

Also Published As

Publication number Publication date
JPS6112418B2 (en) 1986-04-08

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