JPS56761A - Data highway transmission unit - Google Patents

Data highway transmission unit

Info

Publication number
JPS56761A
JPS56761A JP7588479A JP7588479A JPS56761A JP S56761 A JPS56761 A JP S56761A JP 7588479 A JP7588479 A JP 7588479A JP 7588479 A JP7588479 A JP 7588479A JP S56761 A JPS56761 A JP S56761A
Authority
JP
Japan
Prior art keywords
end points
bus
information bus
control unit
transmission 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.)
Pending
Application number
JP7588479A
Other languages
Japanese (ja)
Inventor
Shojiro Nakahara
Takahisa Oota
Kunio Nakajima
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7588479A priority Critical patent/JPS56761A/en
Publication of JPS56761A publication Critical patent/JPS56761A/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 enable the data transmission with high reliability with a simple circuit constitution, by connecting both end points with the bus control unit provided at both end points of the information bus provided in ring shape at open wire of the information bus. CONSTITUTION:At normal state without open wire, the bus control unit 11 opens both end points A, B of the information bus 1 to form one bidirectional common transmission line taking the A, B as the end points. Next, if open wire is caused at the part X of the information bus 1, the bus control unit 11 connects the A, B of the information bus 1 to form one straight line bidirectional common transmission line taking the failed point X as both end points. Accordingly, since one straight line bidirectional common transmission line accessible from the entire data station 2b can be formed both for normal and failed modes, the mutual communication between arbitrary data stations can be made.
JP7588479A 1979-06-15 1979-06-15 Data highway transmission unit Pending JPS56761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7588479A JPS56761A (en) 1979-06-15 1979-06-15 Data highway transmission unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7588479A JPS56761A (en) 1979-06-15 1979-06-15 Data highway transmission unit

Publications (1)

Publication Number Publication Date
JPS56761A true JPS56761A (en) 1981-01-07

Family

ID=13589153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7588479A Pending JPS56761A (en) 1979-06-15 1979-06-15 Data highway transmission unit

Country Status (1)

Country Link
JP (1) JPS56761A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57121905U (en) * 1981-01-23 1982-07-29
JPS57164706U (en) * 1981-04-13 1982-10-18
JPS6150360U (en) * 1984-09-06 1986-04-04
US6797452B2 (en) 1999-06-04 2004-09-28 Toyo Gosei Kogyo Co., Ltd. Photosensitive composition comprising photosensitive saponified poly(vinyl acetate) and pattern formation method making use of the composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5380111A (en) * 1976-12-24 1978-07-15 Nippon Signal Co Ltd:The Automatic cutting-off unit for defective circuit
JPS5452402A (en) * 1977-10-04 1979-04-25 Toshiba Corp Data transmitter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5380111A (en) * 1976-12-24 1978-07-15 Nippon Signal Co Ltd:The Automatic cutting-off unit for defective circuit
JPS5452402A (en) * 1977-10-04 1979-04-25 Toshiba Corp Data transmitter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57121905U (en) * 1981-01-23 1982-07-29
JPS57164706U (en) * 1981-04-13 1982-10-18
JPS6150360U (en) * 1984-09-06 1986-04-04
US6797452B2 (en) 1999-06-04 2004-09-28 Toyo Gosei Kogyo Co., Ltd. Photosensitive composition comprising photosensitive saponified poly(vinyl acetate) and pattern formation method making use of the composition

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