A system and method of setting a clock at a vehicle, including: operating a vehicle clock installed in a vehicle; receiving an external time signal via wireless communications, wherein the external time signal is a wireless communications signal that includes a time value; determining whether a predetermined amount of time has passed since a most-recent clock update; when it is determined that a predetermined amount of time has passed since the most-recent vehicle clock update, then carrying out the following steps: (i) calculating a measured drift and a drift limit; (ii) determining whether the measured drift is less than the drift limit; and (iii) when it is determined that the measured drift is less than the drift limit, then setting the vehicle clock to the time value included in the received external time signal.
UPDATING VEHICLE CLOCK
2018-11-22
Patent
Elektronische Ressource
Englisch
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