Apparatus having signal chain lock step for high integrity functional safety applications
US10620260B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2829
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated circuit (IC) chip for providing a safety-critical value includes first and second processing paths. The first processing path includes a first processing element and is coupled to receive a first input signal on a first input pin and to provide a first output signal that provides the safety-critical value on an output pin. The second processing path includes a second processing element and is coupled to receive a second input signal and to provide a second output signal. The first processing path and the second processing path are independent of each other. A smart comparator on the IC chip receives the first output signal and the second output signal and initiates a remedial action responsive to a difference between the first output signal and the second output signal reaching a configurable threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.