JPS57207454A - Loop system data highway system - Google Patents
Loop system data highway systemInfo
- Publication number
- JPS57207454A JPS57207454A JP56092485A JP9248581A JPS57207454A JP S57207454 A JPS57207454 A JP S57207454A JP 56092485 A JP56092485 A JP 56092485A JP 9248581 A JP9248581 A JP 9248581A JP S57207454 A JPS57207454 A JP S57207454A
- Authority
- JP
- Japan
- Prior art keywords
- loop
- broken
- detection circuit
- transmission lines
- circuit
- 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 prevent the stopping of a transmission function by automatically detecting a broken part and constituting a receovered loop and to restore the system into a normal state, when a transmission line is broken through dupllex transmission lines. CONSTITUTION:A master station M and a plurality of remote stations R1-Rn are connected with a loop transmission line L1 of the system 1 and a loop transmission line L2 of the system 2, and an information processor PU is connected to the respective station M and the R1-Rn and the flow of information signals of the transmission lines L1 and L2 is made inverse. A link connecting the transmission lines L1 and L2 of the stations M and R1-Rn with the processor PU is provided with a pattern detection circuit 35 detecting the coincidence between received data and the flag pattern from the clock, a detection circuit 36 for the generation of broken wire, an FF37 and a detection circuit 36 for the generation of broken wire, an FF37 and a detection circuit 39 for the receovery of broken wire. The circuit 35 and 36 automatically detect the broken part and the circuit 39 automtically detects the restoration of the failure, allowing to reorganize the loop of the transmission lines L1 and L2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56092485A JPS57207454A (en) | 1981-06-16 | 1981-06-16 | Loop system data highway system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56092485A JPS57207454A (en) | 1981-06-16 | 1981-06-16 | Loop system data highway system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57207454A true JPS57207454A (en) | 1982-12-20 |
Family
ID=14055603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56092485A Pending JPS57207454A (en) | 1981-06-16 | 1981-06-16 | Loop system data highway system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57207454A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961237A (en) * | 1982-09-29 | 1984-04-07 | Toshiba Corp | Optical data way system |
JPS60239147A (en) * | 1984-05-14 | 1985-11-28 | Mitsubishi Electric Corp | Duplicated ring type transmission system |
JPS61114630A (en) * | 1984-11-08 | 1986-06-02 | Meidensha Electric Mfg Co Ltd | Line controller of loop transmission line |
JPS61154332A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | Data transmitter |
JPS6234440A (en) * | 1985-08-06 | 1987-02-14 | Nec Corp | Reassembling system for looped transmission line |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082926A (en) * | 1973-11-26 | 1975-07-04 | ||
JPS54139347A (en) * | 1978-04-21 | 1979-10-29 | Agency Of Ind Science & Technol | Loop anomaly detector circuit |
JPS55161449A (en) * | 1979-05-31 | 1980-12-16 | Fujitsu Ltd | Fault monitor system |
-
1981
- 1981-06-16 JP JP56092485A patent/JPS57207454A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082926A (en) * | 1973-11-26 | 1975-07-04 | ||
JPS54139347A (en) * | 1978-04-21 | 1979-10-29 | Agency Of Ind Science & Technol | Loop anomaly detector circuit |
JPS55161449A (en) * | 1979-05-31 | 1980-12-16 | Fujitsu Ltd | Fault monitor system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961237A (en) * | 1982-09-29 | 1984-04-07 | Toshiba Corp | Optical data way system |
JPS60239147A (en) * | 1984-05-14 | 1985-11-28 | Mitsubishi Electric Corp | Duplicated ring type transmission system |
JPS61114630A (en) * | 1984-11-08 | 1986-06-02 | Meidensha Electric Mfg Co Ltd | Line controller of loop transmission line |
JPS61154332A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | Data transmitter |
JPH0324111B2 (en) * | 1984-12-27 | 1991-04-02 | Tokyo Shibaura Electric Co | |
JPS6234440A (en) * | 1985-08-06 | 1987-02-14 | Nec Corp | Reassembling system for looped transmission line |
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