JPS5679549A - Loop type data highway system - Google Patents
Loop type data highway systemInfo
- Publication number
- JPS5679549A JPS5679549A JP15567479A JP15567479A JPS5679549A JP S5679549 A JPS5679549 A JP S5679549A JP 15567479 A JP15567479 A JP 15567479A JP 15567479 A JP15567479 A JP 15567479A JP S5679549 A JPS5679549 A JP S5679549A
- Authority
- JP
- Japan
- Prior art keywords
- line
- output
- station
- demodulator
- flop
- 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
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 give the centralized monitor function for the entire system and to increase the maintenanceability, by reducing the failure detection and switching time and enabling to keep the data transmission without detaching the station from the loop even if failures such as open line are produced at a plurality of parts of one line, in a loop. CONSTITUTION:Normally, a line switching filp-flop 51 is set to A side, and the output of a receiver 201 at the side A is given to a demodulator 21 with gates 521- 523. If a failure is produced on the line A, the output of a line monitor circuit 501 is fallen, and if the line B is normal, the flip-flop 51 is clear with the gate 524 and it is set to the side B, and the output of the receiver 202 at side B is given to the demodulator 21. Taking the line monitor time at the station at lowermost stream nearest the CST (central station) as minimum and taking greater sequentially, two stations are avoided for failure detection at the same time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15567479A JPS5679549A (en) | 1979-12-03 | 1979-12-03 | Loop type data highway system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15567479A JPS5679549A (en) | 1979-12-03 | 1979-12-03 | Loop type data highway system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5679549A true JPS5679549A (en) | 1981-06-30 |
Family
ID=15611092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15567479A Pending JPS5679549A (en) | 1979-12-03 | 1979-12-03 | Loop type data highway system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5679549A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5190245A (en) * | 1975-02-05 | 1976-08-07 | ||
JPS5438704A (en) * | 1977-09-02 | 1979-03-23 | Toshiba Corp | Loop-type data transmission device |
-
1979
- 1979-12-03 JP JP15567479A patent/JPS5679549A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5190245A (en) * | 1975-02-05 | 1976-08-07 | ||
JPS5438704A (en) * | 1977-09-02 | 1979-03-23 | Toshiba Corp | Loop-type data transmission device |
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