(1+N) Hitless channel switching system
US4961190A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1988 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A (1+N) (N.gtoreq.1) hitless channel switching system of a digital transmission system having an error correction function in which a transmitting side is connected to a receiving side through N regular channels and a single standby channel, includes in the receiving side, a detecting unit, a channel degradation determination unit, and a switching unit. The detecting unit detects a bit error rate of each channel before error correction. The channel degradation determination unit determines channel degradation in accordance with the detected bit error rate. The switching unit switches a degraded channel to the standby channel with non-interruption in accordance with information from the channel degradation determination unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.