Duplexed bus type network with failure changeover
US5323144A · kind A · utility
13Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1991 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Jan 31, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A duplexed bus type network in which a main transmission line and a stand-by transmission line are interconnected by a repeater (30), a changeover switch (40) or a two-way amplifier, a modem at each station is duplexed and connected to the main transmission line and the stand-by transmission line, and, upon trouble in one modem (11A), only the relevant station is switched over to the modem (21A) belonging to the stand-by transmission line. When the main transmission line is broken, all the stations are simultaneously switched over to the stand-by transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.