JPS5725750A - Data transmitting system - Google Patents

Data transmitting system

Info

Publication number
JPS5725750A
JPS5725750A JP10018780A JP10018780A JPS5725750A JP S5725750 A JPS5725750 A JP S5725750A JP 10018780 A JP10018780 A JP 10018780A JP 10018780 A JP10018780 A JP 10018780A JP S5725750 A JPS5725750 A JP S5725750A
Authority
JP
Japan
Prior art keywords
circuit
level
voltage
turned
transmitting
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
JP10018780A
Other languages
Japanese (ja)
Inventor
Seiji Takano
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 JP10018780A priority Critical patent/JPS5725750A/en
Publication of JPS5725750A publication Critical patent/JPS5725750A/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]
    • H04L12/40—Bus networks

Landscapes

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

Abstract

PURPOSE:To realize a stable transmission without loweing the driving capacity of a transmitting circuit on a transmission line, by installing a terminating circuit that contains a detecting circuit to detect the voltage level on the transmission line and an output circuit to deliver the optional voltage by the discriminating signal. CONSTITUTION:When the level of an input terminal 402 is changed to 1 from 0 for a transmitting circuit 1000 in which the level of an output terminal 403 is at 0, three transmitting circuits added on a transmission line 1 have a high impedance respectively. As a result, the base current of a transistor (TR)109 of a receiving circuit 2000 flows to a floating capacitor 2 on the transmitting circuit after passing through the emitter. Then TRs 110 and 111 increases up to the level of voltage necessary for a turn-on. With increase of the voltage on the line 1, a TR113 of a voltage detecting circuit 4002 in a terminating circuit 4000 is turned on. And a TR114 is turned off. As a result, the base potential of a TR112 is turned to a power source 800, and the level of an output terminal 701 is set at 1.
JP10018780A 1980-07-22 1980-07-22 Data transmitting system Pending JPS5725750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10018780A JPS5725750A (en) 1980-07-22 1980-07-22 Data transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10018780A JPS5725750A (en) 1980-07-22 1980-07-22 Data transmitting system

Publications (1)

Publication Number Publication Date
JPS5725750A true JPS5725750A (en) 1982-02-10

Family

ID=14267295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10018780A Pending JPS5725750A (en) 1980-07-22 1980-07-22 Data transmitting system

Country Status (1)

Country Link
JP (1) JPS5725750A (en)

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