Protection switching system with single line control
US5570345A · kind A · utility
10Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5651
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention performs very fast switching between a main module and a standby module in the event of module failure. A single control line has different logic level signals applied thereto in the event of a main module failure and a standby module failure, with the signals on the control line being utilized to efficiently switch the on-line status of the modules to a desired state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.