JPS5479504A - Data highway system - Google Patents

Data highway system

Info

Publication number
JPS5479504A
JPS5479504A JP14742077A JP14742077A JPS5479504A JP S5479504 A JPS5479504 A JP S5479504A JP 14742077 A JP14742077 A JP 14742077A JP 14742077 A JP14742077 A JP 14742077A JP S5479504 A JPS5479504 A JP S5479504A
Authority
JP
Japan
Prior art keywords
station
detection frame
stations
data
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
JP14742077A
Other languages
Japanese (ja)
Inventor
Masami Tamura
Takashi Sato
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 JP14742077A priority Critical patent/JPS5479504A/en
Publication of JPS5479504A publication Critical patent/JPS5479504A/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 reduce unaccountable transfer failures by informing a control station that its own circuit is not separated, by changing data on a detection frame. CONSTITUTION:The data highway system consists of stations 3, 4 and 5 connected to a ring transmission line, and control station 2 supervising this transmission line. In the intervals of an exchange of normal information, output control circuit 27 is controlled to output details of a detection frame, stored in output rigister 30, showing circuit separation states of stations 3, 4 and 5, and each station is informed of the response of a station to the detection frame. In this case, stations 3, 4 and 5 inform station 2, by changing data on the detection frame, that their own circuits are not separated at the time of the reception of the data. Consequently, unaccountable transfer failures can be reduced.
JP14742077A 1977-12-07 1977-12-07 Data highway system Pending JPS5479504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14742077A JPS5479504A (en) 1977-12-07 1977-12-07 Data highway system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14742077A JPS5479504A (en) 1977-12-07 1977-12-07 Data highway system

Publications (1)

Publication Number Publication Date
JPS5479504A true JPS5479504A (en) 1979-06-25

Family

ID=15429900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14742077A Pending JPS5479504A (en) 1977-12-07 1977-12-07 Data highway system

Country Status (1)

Country Link
JP (1) JPS5479504A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56106458A (en) * 1980-01-28 1981-08-24 Nec Corp Data highway device
JPS56168457A (en) * 1980-05-30 1981-12-24 Agency Of Ind Science & Technol Loop-type network system
JPH01215153A (en) * 1988-02-23 1989-08-29 Nec Corp Bypass detection system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195750A (en) * 1975-02-19 1976-08-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195750A (en) * 1975-02-19 1976-08-21

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56106458A (en) * 1980-01-28 1981-08-24 Nec Corp Data highway device
JPS56168457A (en) * 1980-05-30 1981-12-24 Agency Of Ind Science & Technol Loop-type network system
JPS5820179B2 (en) * 1980-05-30 1983-04-21 工業技術院長 Loop network system
JPH01215153A (en) * 1988-02-23 1989-08-29 Nec Corp Bypass detection system

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