JPS5765038A - Data monitor system - Google Patents

Data monitor system

Info

Publication number
JPS5765038A
JPS5765038A JP14161180A JP14161180A JPS5765038A JP S5765038 A JPS5765038 A JP S5765038A JP 14161180 A JP14161180 A JP 14161180A JP 14161180 A JP14161180 A JP 14161180A JP S5765038 A JPS5765038 A JP S5765038A
Authority
JP
Japan
Prior art keywords
data
flag
area
monitor station
bit
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.)
Granted
Application number
JP14161180A
Other languages
Japanese (ja)
Other versions
JPS636188B2 (en
Inventor
Koji Iijima
Teruyoshi Mita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14161180A priority Critical patent/JPS5765038A/en
Publication of JPS5765038A publication Critical patent/JPS5765038A/en
Publication of JPS636188B2 publication Critical patent/JPS636188B2/ja
Granted 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
    • H04L12/427—Loop networks with decentralised control
    • H04L12/43—Loop networks with decentralised control with synchronous transmission, e.g. time division multiplex [TDM], slotted rings

Abstract

PURPOSE:To monitor circulating data simply with good transmission efficiency, by concentratingly monitoring the data at the monitor station and performing the abolition of the circulating data completely, through the provision of two types of 2-bit flag area in the data format. CONSTITUTION:A monitor station SV monitoring data and a plurality of node stations ND1-ND4 are connected in loop with a transmission line to constitute the loop network. In the data format of the time slot used for this network, a control area 1, opposing party address area 2, data area 3 and check bit area 4 are provided, and the area 1 is provided with a monitor station passing flag bit SV flag and a usage display flag bit B/I flag. When data are transmitted at stations ND1- ND4, the B/I flag is set, and the SV flag is set when the time slot passes through the monitor station SV, and when both the SV and B/I flag are detected at the monitor station SV, the data of the time slot is abolished.
JP14161180A 1980-10-09 1980-10-09 Data monitor system Granted JPS5765038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14161180A JPS5765038A (en) 1980-10-09 1980-10-09 Data monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14161180A JPS5765038A (en) 1980-10-09 1980-10-09 Data monitor system

Publications (2)

Publication Number Publication Date
JPS5765038A true JPS5765038A (en) 1982-04-20
JPS636188B2 JPS636188B2 (en) 1988-02-08

Family

ID=15296042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14161180A Granted JPS5765038A (en) 1980-10-09 1980-10-09 Data monitor system

Country Status (1)

Country Link
JP (1) JPS5765038A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6141251A (en) * 1984-08-01 1986-02-27 Matsushita Electric Ind Co Ltd Loop network control system
JPH0484532A (en) * 1990-07-27 1992-03-17 Nec Corp Atm cell monitor system in atm ring network

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6141251A (en) * 1984-08-01 1986-02-27 Matsushita Electric Ind Co Ltd Loop network control system
JPH0376617B2 (en) * 1984-08-01 1991-12-06 Matsushita Electric Ind Co Ltd
JPH0484532A (en) * 1990-07-27 1992-03-17 Nec Corp Atm cell monitor system in atm ring network

Also Published As

Publication number Publication date
JPS636188B2 (en) 1988-02-08

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