JPS53130905A - Back up system in loop type data transmission - Google Patents

Back up system in loop type data transmission

Info

Publication number
JPS53130905A
JPS53130905A JP3544578A JP3544578A JPS53130905A JP S53130905 A JPS53130905 A JP S53130905A JP 3544578 A JP3544578 A JP 3544578A JP 3544578 A JP3544578 A JP 3544578A JP S53130905 A JPS53130905 A JP S53130905A
Authority
JP
Japan
Prior art keywords
data transmission
type data
loop type
loop
provision
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
JP3544578A
Other languages
Japanese (ja)
Inventor
Akiyoshi Sasanuno
Hiroshi Matsumoto
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 JP3544578A priority Critical patent/JPS53130905A/en
Publication of JPS53130905A publication Critical patent/JPS53130905A/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
    • H04L12/437—Ring fault isolation or reconfiguration

Landscapes

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

Abstract

PURPOSE:To increase the reliability of system by preventing the functions of the overall system from being stopped, through the provision of a plurality of central managing control units in the loop.
JP3544578A 1978-03-29 1978-03-29 Back up system in loop type data transmission Pending JPS53130905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3544578A JPS53130905A (en) 1978-03-29 1978-03-29 Back up system in loop type data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3544578A JPS53130905A (en) 1978-03-29 1978-03-29 Back up system in loop type data transmission

Publications (1)

Publication Number Publication Date
JPS53130905A true JPS53130905A (en) 1978-11-15

Family

ID=12442019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3544578A Pending JPS53130905A (en) 1978-03-29 1978-03-29 Back up system in loop type data transmission

Country Status (1)

Country Link
JP (1) JPS53130905A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745758A (en) * 1980-09-03 1982-03-15 Hitachi Ltd Loop type data transmission controller
JPS58141057A (en) * 1982-02-16 1983-08-22 Mitsubishi Electric Corp Loop network transmitter
JPS60180248A (en) * 1984-02-27 1985-09-14 Fujitsu Ltd Master station setting system in communication line
JPS62261297A (en) * 1986-05-08 1987-11-13 Taiko Denki Seisakusho:Kk Synchronizing pulse sending control system for key telephone system
JPS6379436A (en) * 1987-09-04 1988-04-09 Hitachi Ltd Loop type data transmission control equipment
JPH01170142A (en) * 1987-12-25 1989-07-05 Iwatsu Electric Co Ltd Data transmission system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745758A (en) * 1980-09-03 1982-03-15 Hitachi Ltd Loop type data transmission controller
JPS58141057A (en) * 1982-02-16 1983-08-22 Mitsubishi Electric Corp Loop network transmitter
JPS60180248A (en) * 1984-02-27 1985-09-14 Fujitsu Ltd Master station setting system in communication line
JPS62261297A (en) * 1986-05-08 1987-11-13 Taiko Denki Seisakusho:Kk Synchronizing pulse sending control system for key telephone system
JPS6379436A (en) * 1987-09-04 1988-04-09 Hitachi Ltd Loop type data transmission control equipment
JPH01170142A (en) * 1987-12-25 1989-07-05 Iwatsu Electric Co Ltd Data transmission system

Similar Documents

Publication Publication Date Title
JPS53130905A (en) Back up system in loop type data transmission
JPS5424508A (en) Filure detection system for loop delivery
JPS5386105A (en) Signal transmission system
JPS5439503A (en) Priority selection system in ring transmission line
JPS5441602A (en) Loop type data delivery system
JPS54812A (en) Repeating system
JPS5342602A (en) Transmission control system
JPS5336118A (en) Loop transmission system
JPS5336119A (en) Time-sharing series loop communication system
JPS53139904A (en) Data transmission unit
JPS53114630A (en) Data highway system
JPS52131083A (en) Remote control system
JPS53114635A (en) Data highway system
JPS5439502A (en) Loop delivery system
JPS531406A (en) Processing system for subscriber information
JPS5315032A (en) Fraction arismetic control unit
JPS52146101A (en) Terminal equipment in a simple data communicating system
JPS5315722A (en) Input/output interrupption control system
JPS52153347A (en) Input/output control system
JPS5368009A (en) Control information transmission system for out-trunk
JPS52147909A (en) Error control switching system
JPS52140203A (en) Information transmission system
JPS5291312A (en) Data transmission system
JPS5361931A (en) Communication control device
JPS51137248A (en) Group management control system of elevators