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JPS56169492A - Remote monitor controller - Google Patents

Remote monitor controller

Info

Publication number
JPS56169492A
JPS56169492A JP7154380A JP7154380A JPS56169492A JP S56169492 A JPS56169492 A JP S56169492A JP 7154380 A JP7154380 A JP 7154380A JP 7154380 A JP7154380 A JP 7154380A JP S56169492 A JPS56169492 A JP S56169492A
Authority
JP
Japan
Prior art keywords
line
station
master
switches
incoming
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
JP7154380A
Other languages
Japanese (ja)
Inventor
Masahiko Shimizu
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom 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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP7154380A priority Critical patent/JPS56169492A/en
Publication of JPS56169492A publication Critical patent/JPS56169492A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

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

Abstract

PURPOSE:To satisfy a desirable performance with a simple constitution, by providing a selective changeover switch for incoming and outgoing transmission lines in a master station and slave stations of the device constituted of 4-wire branchlike 1:n line, and backing up the line with lines not causing line failure. CONSTITUTION:A master station 20 and slave stations (j) of the device constituted of 4-wire branchlike 1:n line are coupled with incoming and outgoing transmission lines 21, 22, and changeover switches 23-26 are normally connected as shown in figure, and the reception/transmission of data between the master and slave stations is made in the arrow direction shown by a solid line. If a line is opened at the part of mark X, first the master station 20 and the slave station (j) detect the opened line and the switches 23, 25 are changed over to the B side. Thus, the data from the master to the slave station are fed to the incoming line 21 via the switch 23 in the arrow direction shown by a dotted line and fetched to the slave station via the switch 25. Further, the data from the slave station to the master station is transmitted by returning the switches 23, 25 to the A side as shown in figure. Further, to back up the opened incoming line, the outgoing line is used by turning on switches 24 and 26 to the B side.
JP7154380A 1980-05-30 1980-05-30 Remote monitor controller Pending JPS56169492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7154380A JPS56169492A (en) 1980-05-30 1980-05-30 Remote monitor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7154380A JPS56169492A (en) 1980-05-30 1980-05-30 Remote monitor controller

Publications (1)

Publication Number Publication Date
JPS56169492A true JPS56169492A (en) 1981-12-26

Family

ID=13463754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7154380A Pending JPS56169492A (en) 1980-05-30 1980-05-30 Remote monitor controller

Country Status (1)

Country Link
JP (1) JPS56169492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255045A (en) * 1988-04-05 1989-10-11 Nec Corp System for guaranteeing operation of spare system in switching of inter-computer communication equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255045A (en) * 1988-04-05 1989-10-11 Nec Corp System for guaranteeing operation of spare system in switching of inter-computer communication equipment

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