High integrity AFDX switches
US10541944B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Oct 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An improved AFDX switch, as described herein, can include an embedded integrity monitoring module that is functionally fault-independent of the switching module or other components of the AFDX switch. The integrity monitoring module can include a delay monitoring module for monitoring delays of data packets within the AFDX switch and/or a routing module for monitoring or detecting data packets routing errors or failures. The delay monitoring module can assign a timestamp to a data frame at arrival to the AFDX switch, determine a time delay of the data frame within the AFDX switch based on the timestamp, and compare the time delay to a threshold value to detect erroneous time delays. The routing monitoring module can compare the input port and/or the output port at which the data frame arrives while in the AFDX switch to the corresponding preassigned input port or output port to detect routing failures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.