JPS5639653A - Multiple terminal control system - Google Patents

Multiple terminal control system

Info

Publication number
JPS5639653A
JPS5639653A JP11496779A JP11496779A JPS5639653A JP S5639653 A JPS5639653 A JP S5639653A JP 11496779 A JP11496779 A JP 11496779A JP 11496779 A JP11496779 A JP 11496779A JP S5639653 A JPS5639653 A JP S5639653A
Authority
JP
Japan
Prior art keywords
terminal
control
sent
indication
communication
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.)
Pending
Application number
JP11496779A
Other languages
Japanese (ja)
Inventor
Tomoaki Kawakami
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 JP11496779A priority Critical patent/JPS5639653A/en
Publication of JPS5639653A publication Critical patent/JPS5639653A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/423—Loop networks with centralised control, e.g. polling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To enable rapid and efficient data transmission control by an easy control system by providing a control line connecting respective terminal units in a loop separately from a communication circuit for data. CONSTITUTION:From multiple terminal controller 103 to adjacent terminal unit 1021, the control indication of ring-shaped control line 106 is sent being in state ''1'', i.e. communication permit state. Terminal 1021, when not to communicate with main computer 101, namely, no actuation request is sent, sends the control indication of state ''1'' to adjacent terminal 1022. When the actuation request is sent, on the other hand it communicates with computer 101 and, after the cmmunication ends, sends the indication of communication permission to terminal 1022 via control line 106. Thus, the control indication is sent to terminal 1021 again by way of terminals 1022-102n. Thus, the simple hardware constitution provides rapid and highly efficient data communication control between terminals and the main computer.
JP11496779A 1979-09-07 1979-09-07 Multiple terminal control system Pending JPS5639653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11496779A JPS5639653A (en) 1979-09-07 1979-09-07 Multiple terminal control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11496779A JPS5639653A (en) 1979-09-07 1979-09-07 Multiple terminal control system

Publications (1)

Publication Number Publication Date
JPS5639653A true JPS5639653A (en) 1981-04-15

Family

ID=14651057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11496779A Pending JPS5639653A (en) 1979-09-07 1979-09-07 Multiple terminal control system

Country Status (1)

Country Link
JP (1) JPS5639653A (en)

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