Apparatus and method for enhancing reliability of watchdog circuit for controlling central processing device for vehicle
US10579484B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0757
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An operating method of a vehicle watchdog circuit is provided. The method includes monitoring whether communication with a vehicle controller through a preset protocol is enabled and when a communication fault does not occur by monitoring whether communication is enabled, transmitting an error detection query to the vehicle controller every preset period. A response to the error detection query is received, and an operation of the vehicle controller is monitored, and upon determining that the operation of the vehicle controller is normal, a plurality of preset reset signals are sequentially transmitted to the vehicle controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.