JPS56152352A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS56152352A
JPS56152352A JP5507580A JP5507580A JPS56152352A JP S56152352 A JPS56152352 A JP S56152352A JP 5507580 A JP5507580 A JP 5507580A JP 5507580 A JP5507580 A JP 5507580A JP S56152352 A JPS56152352 A JP S56152352A
Authority
JP
Japan
Prior art keywords
data
transmission line
frame
data transmission
tce1
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
JP5507580A
Other languages
Japanese (ja)
Inventor
Seijiro Yamada
Toshio Aida
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5507580A priority Critical patent/JPS56152352A/en
Publication of JPS56152352A publication Critical patent/JPS56152352A/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)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To improve the use efficiency of the transmission line to transmit data equally, by connecting the terminal equipment group to the unidirectional data transmission line which is led out from the terminal control device and returns to this device. CONSTITUTION:Terminal control device TCE1 transmits the frame group of components corresponding to two sets of terminal equipment DV as one unit to data transmission line 3 at a constant interval. Respective devices DVs 2-1-2-n discriminate the identification code of the ID part of the frame on transmission line 3. When the frame for thier own devices is received, the command of the ID part in the frame is decoded to decide whether data of the DATA part should be received or data should be transmitted. In case of data transmission, transmission data is set to the DATA part. Device TCE1 receives data set in the DATA part of each frame returned from transmission line 3.
JP5507580A 1980-04-25 1980-04-25 Data transmission system Pending JPS56152352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5507580A JPS56152352A (en) 1980-04-25 1980-04-25 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5507580A JPS56152352A (en) 1980-04-25 1980-04-25 Data transmission system

Publications (1)

Publication Number Publication Date
JPS56152352A true JPS56152352A (en) 1981-11-25

Family

ID=12988572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5507580A Pending JPS56152352A (en) 1980-04-25 1980-04-25 Data transmission system

Country Status (1)

Country Link
JP (1) JPS56152352A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217184A2 (en) * 1985-10-02 1987-04-08 International Business Machines Corporation Method for communicating with remote units of a distributive data processing system
EP0519490A2 (en) * 1991-06-21 1992-12-23 Fujitsu Limited Input-output signal control apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217184A2 (en) * 1985-10-02 1987-04-08 International Business Machines Corporation Method for communicating with remote units of a distributive data processing system
EP0519490A2 (en) * 1991-06-21 1992-12-23 Fujitsu Limited Input-output signal control apparatus
US5359604A (en) * 1991-06-21 1994-10-25 Fujitsu Limited Input-output signal control apparatus

Similar Documents

Publication Publication Date Title
DE3780224T2 (en) CIRCUIT TO AVOID INTERFERENCES WHEN TRANSMITTING VIA THE ELECTRICITY NETWORK.
GB8922271D0 (en) Two-wire telemetering system including power regulated transmitting device
DE69009611D1 (en) Multi-output energy conversion device.
DE3788614T2 (en) Remote control transmission device.
DE68916464D1 (en) Transmission system with AC coupling receiver circuit.
DE3773929D1 (en) DATA TRANSFER METHOD AND DATA TRANSFER DEVICE.
JPS56152352A (en) Data transmission system
FR2760921B1 (en) METHOD AND DEVICE FOR TRANSMITTING DATA
IT8222516A1 (en) NEW PROCEDURE TO PREPARE 2 ', 4'-DIFLUORO-4-HYDROXY- (1,1'-DIPHENYL) -3-CARBOXYL ACID
JPS52144236A (en) Information processing system
JPS5438735A (en) Information transmitting system
JPS5572221A (en) Power control system
JPS5572222A (en) Power control system
JPS55117368A (en) Automatic telephone exchange
JPS5336119A (en) Time-sharing series loop communication system
JPS6441949A (en) Input output control system by multi-point connection
JPS57161924A (en) Data gathering system
JPS57194659A (en) Controlling system for transmission of information
JPS56123151A (en) Direct-current coupling bus control system
JPS55135937A (en) Circuit control method of data highway system
JPS57159151A (en) Data transmission system
JPS5759235A (en) Film transmission system using job transfer system
JPS57212849A (en) Polling transmission system
JPS5764842A (en) Data transfer system
JPS53131706A (en) Automatic telephone exchange system