Communications apparatus with redundant switching or backpressure mechanism
US7706255B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Jun 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/3045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communications apparatus includes several functional modules for implementing an application, a pair of switch modules to provide redundant switching capability for transferring frames between the functional modules. Each functional module is connected to each switch module by a frame-based communication link. A redundancy logic unit at each functional module inserts sequence numbers into outgoing frames, replicates the outgoing frames for forwarding to each of said switch modules, and monitors incoming frames from each of the switch modules to select frames for forwarding to an application based on the sequence numbers. In this way, redundancy is maintained at all times, while duplicate frames are eliminated at the receiving module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.