JPS5658347A - Data transmission method - Google Patents

Data transmission method

Info

Publication number
JPS5658347A
JPS5658347A JP13483779A JP13483779A JPS5658347A JP S5658347 A JPS5658347 A JP S5658347A JP 13483779 A JP13483779 A JP 13483779A JP 13483779 A JP13483779 A JP 13483779A JP S5658347 A JPS5658347 A JP S5658347A
Authority
JP
Japan
Prior art keywords
data transmission
counter
detection circuit
central device
output
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
JP13483779A
Other languages
Japanese (ja)
Inventor
Shiyoujirou Inoue
Masuo Nakayama
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP13483779A priority Critical patent/JPS5658347A/en
Publication of JPS5658347A publication Critical patent/JPS5658347A/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

Landscapes

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

Abstract

PURPOSE:To simplify the circuit constitution and to make small the space, by sequentially monitoring of each terminal device by a central device, transmitting telegraphic message which shows the reception of transmission request when the production of transmission request is detected, and starting the data transmission. CONSTITUTION:A detection circuit 13 is operated with a detection start signal to advance a counter 12 and the output terminal corresponding to the counter output is selected to sequentially open the gate of one set of line driver 9 and line receiver 10 connected to each terminal device 2. Further, an output signal is produced at an output terminal of the receiver 10 and it is fed to the detection circuit 13 of a central device 1. When the detection circuit 13 of the central device 1 detects this signal, the counter 12 is stopped, and after the telegraphic message of response is fed, data transmission is made.
JP13483779A 1979-10-18 1979-10-18 Data transmission method Pending JPS5658347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13483779A JPS5658347A (en) 1979-10-18 1979-10-18 Data transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13483779A JPS5658347A (en) 1979-10-18 1979-10-18 Data transmission method

Publications (1)

Publication Number Publication Date
JPS5658347A true JPS5658347A (en) 1981-05-21

Family

ID=15137615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13483779A Pending JPS5658347A (en) 1979-10-18 1979-10-18 Data transmission method

Country Status (1)

Country Link
JP (1) JPS5658347A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117942A (en) * 1983-11-14 1985-06-25 タンデム　コンピユーターズ　インコーポレーテツド Input/output multiplexer/demultiplexer communication channel
JPH0469461B2 (en) * 1982-03-05 1992-11-06 Ei Teii Ando Teii Tekunorojiizu Inc

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440001A (en) * 1977-09-06 1979-03-28 Nec Corp Transmission request detecting system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440001A (en) * 1977-09-06 1979-03-28 Nec Corp Transmission request detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0469461B2 (en) * 1982-03-05 1992-11-06 Ei Teii Ando Teii Tekunorojiizu Inc
JPS60117942A (en) * 1983-11-14 1985-06-25 タンデム　コンピユーターズ　インコーポレーテツド Input/output multiplexer/demultiplexer communication channel

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