JPS5475203A - Circulating type information transmission system - Google Patents

Circulating type information transmission system

Info

Publication number
JPS5475203A
JPS5475203A JP14290677A JP14290677A JPS5475203A JP S5475203 A JPS5475203 A JP S5475203A JP 14290677 A JP14290677 A JP 14290677A JP 14290677 A JP14290677 A JP 14290677A JP S5475203 A JPS5475203 A JP S5475203A
Authority
JP
Japan
Prior art keywords
transmission
pathes
stations
trouble
folding
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
JP14290677A
Other languages
Japanese (ja)
Inventor
Yoshinobu Sano
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14290677A priority Critical patent/JPS5475203A/en
Publication of JPS5475203A publication Critical patent/JPS5475203A/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 make it possible to continue the system operation with excepting only a trouble part, by providing a function, which forms selectively a folding signal line, in each station. CONSTITUTION:Each of stations ST1 to STn forms a two-way data circulating loop by transmission pathes LA1, LA2,... and opposite-direction transmission pathes LB1, LB2,... respectively. When a master station, for example, ST1 detects the trouble between ST2 and ST3 in the system operating, ST1 transmits the instruction signal for folding signal line forming to ST3 and ST2 through transmission pathes LA and LB respectively. ST3 and ST2 from folding loops in the non-trouble side transmission pathes under the control of processing unit 15. As a result, transmission pathes between every stations are restored, and the data exchange can be performed between arbitrary stations. NOw, the transmission path is normally used in one direction.
JP14290677A 1977-11-29 1977-11-29 Circulating type information transmission system Pending JPS5475203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14290677A JPS5475203A (en) 1977-11-29 1977-11-29 Circulating type information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14290677A JPS5475203A (en) 1977-11-29 1977-11-29 Circulating type information transmission system

Publications (1)

Publication Number Publication Date
JPS5475203A true JPS5475203A (en) 1979-06-15

Family

ID=15326353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14290677A Pending JPS5475203A (en) 1977-11-29 1977-11-29 Circulating type information transmission system

Country Status (1)

Country Link
JP (1) JPS5475203A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212848A (en) * 1981-06-25 1982-12-27 Fujitsu Ltd Loop back control system
JPS60136444A (en) * 1983-12-26 1985-07-19 Hitachi Ltd Loop back control method of loop transmission system
JPH0286340A (en) * 1988-09-22 1990-03-27 Fujikura Ltd Optical fiber transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212848A (en) * 1981-06-25 1982-12-27 Fujitsu Ltd Loop back control system
JPS60136444A (en) * 1983-12-26 1985-07-19 Hitachi Ltd Loop back control method of loop transmission system
JPH0229261B2 (en) * 1983-12-26 1990-06-28 Hitachi Ltd
JPH0286340A (en) * 1988-09-22 1990-03-27 Fujikura Ltd Optical fiber transmission system

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