JPS57103454A - Asynchronous transmission system - Google Patents

Asynchronous transmission system

Info

Publication number
JPS57103454A
JPS57103454A JP55178514A JP17851480A JPS57103454A JP S57103454 A JPS57103454 A JP S57103454A JP 55178514 A JP55178514 A JP 55178514A JP 17851480 A JP17851480 A JP 17851480A JP S57103454 A JPS57103454 A JP S57103454A
Authority
JP
Japan
Prior art keywords
data
transmission
receiving
control signal
lines
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
JP55178514A
Other languages
Japanese (ja)
Other versions
JPS6139781B2 (en
Inventor
Akira Miyasaka
Tatsu Kawasaki
Masao Yamazawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55178514A priority Critical patent/JPS57103454A/en
Publication of JPS57103454A publication Critical patent/JPS57103454A/en
Publication of JPS6139781B2 publication Critical patent/JPS6139781B2/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
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Abstract

PURPOSE:To make data transmission and receiving operations high-speed, by stopping the output of receiving data to a terminal equipment of the half duplex contention system when a transmission control signal is detected in case that this terminal equipment is connected to a full duplex line. CONSTITUTION:Terminal equipments 21 and 24 which transmit parallel data asynchronously in the half duplex contention system are connected to full duplex lines through transmission devices 22 and 23 to transmit data. In this system, detecting means such as change point detecting circuits 35 and 40 for a transmission control signal are provided in transmission devices 21 and 24, and the output of receiving data to data lines 26 and 31 to terminal equipments 21 and 24 is stopped by detection of the transmission control signal to prevent transmission data and receiving data from mixing on data lines 26 and 31. Thus, the waiting time based on a transmission delay time for mutual data transmission and receiving between terminal equipments 21 and 24 is shortened.
JP55178514A 1980-12-17 1980-12-17 Asynchronous transmission system Granted JPS57103454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55178514A JPS57103454A (en) 1980-12-17 1980-12-17 Asynchronous transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55178514A JPS57103454A (en) 1980-12-17 1980-12-17 Asynchronous transmission system

Publications (2)

Publication Number Publication Date
JPS57103454A true JPS57103454A (en) 1982-06-28
JPS6139781B2 JPS6139781B2 (en) 1986-09-05

Family

ID=16049798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55178514A Granted JPS57103454A (en) 1980-12-17 1980-12-17 Asynchronous transmission system

Country Status (1)

Country Link
JP (1) JPS57103454A (en)

Also Published As

Publication number Publication date
JPS6139781B2 (en) 1986-09-05

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