Patent ID: 11907143
Assignee: MEDIATEK SINGAPORE PTE. LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The method for timestamping and synchronization with high-accuracy timestamps in low-power sensor systems as claimed in claim 1, wherein the method further comprises:
obtaining, by the sensor hub, a system time of the sensor hub and a first time from the always-running unified time reference;
obtaining, by an application processor of the device, a system time of the application processor according to the interrupt signal and a second time from the always-running unified time reference;
calculating, by the application processor, a time offset between the system time of the sensor hub and the system time of the application processor according to the system time of the application processor and the system time of the sensor hub by using a filtering algorithm; and
using, by the application processor, the time offset to re-correct the timestamp of each data transmitted from the sensor hub.