JPS5792946A - Transmission system - Google Patents

Transmission system

Info

Publication number
JPS5792946A
JPS5792946A JP55167985A JP16798580A JPS5792946A JP S5792946 A JPS5792946 A JP S5792946A JP 55167985 A JP55167985 A JP 55167985A JP 16798580 A JP16798580 A JP 16798580A JP S5792946 A JPS5792946 A JP S5792946A
Authority
JP
Japan
Prior art keywords
driver
transmission line
bus transmission
data
line
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
JP55167985A
Other languages
Japanese (ja)
Other versions
JPH0217977B2 (en
Inventor
Sadao Mizokawa
Hitoshi Fushimi
Toshiyuki Ide
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 JP55167985A priority Critical patent/JPS5792946A/en
Publication of JPS5792946A publication Critical patent/JPS5792946A/en
Publication of JPH0217977B2 publication Critical patent/JPH0217977B2/ja
Granted 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
    • H04L12/437—Ring fault isolation or reconfiguration

Landscapes

  • Small-Scale Networks (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To make the operation of a titled system possible even if a disconnection fault occurs on a transmission line, by constituting the bus transmission system into a loop. CONSTITUTION:A changeover switch 40 in a control station 35 is switched as shown by the solid line at the normality time. Consequently, data from a control circuit 42 is transmitted to a bus transmission line 90 through a driver 36 and is received by a receiving driver 47 in each of terminal equipments 43-46 as required. Transmission data from each terminal equipment is transmitted to the bus transmission line 90 through a driver 48 and is received by a receiver 38 in the control station. If the bus transmission line is disconnected at a point marked with a cross, this disconnection state is detected by a fault detector 41. Then, the changeover switch 40 is moved in the direction of the dotted line to operate a transmitting driver 39, thus transmitting and receiving data to and from terminals 45 and 46 which are disconnected by this fault.
JP55167985A 1980-12-01 1980-12-01 Transmission system Granted JPS5792946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55167985A JPS5792946A (en) 1980-12-01 1980-12-01 Transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55167985A JPS5792946A (en) 1980-12-01 1980-12-01 Transmission system

Publications (2)

Publication Number Publication Date
JPS5792946A true JPS5792946A (en) 1982-06-09
JPH0217977B2 JPH0217977B2 (en) 1990-04-24

Family

ID=15859661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55167985A Granted JPS5792946A (en) 1980-12-01 1980-12-01 Transmission system

Country Status (1)

Country Link
JP (1) JPS5792946A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04261246A (en) * 1991-01-11 1992-09-17 Mitsubishi Electric Corp Transmission system and transmission method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413935A (en) * 1977-07-01 1979-02-01 Matsushita Electric Ind Co Ltd Data communication device
JPS5552656A (en) * 1978-10-12 1980-04-17 Toshiba Corp Data transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413935A (en) * 1977-07-01 1979-02-01 Matsushita Electric Ind Co Ltd Data communication device
JPS5552656A (en) * 1978-10-12 1980-04-17 Toshiba Corp Data transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04261246A (en) * 1991-01-11 1992-09-17 Mitsubishi Electric Corp Transmission system and transmission method

Also Published As

Publication number Publication date
JPH0217977B2 (en) 1990-04-24

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