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

Claim 21:
22. The device for timestamping and synchronization with high-accuracy timestamps in low-power sensor systems as claimed in claim 13, wherein the device further comprises:
an application processor, coupled to the sensor hub;
wherein the sensor hub obtains a system time of the sensor hub and a first time from the always-running unified time reference, and the application processor further executes:
obtaining a system time of the application processor according to the interrupt signal and a second time from the always-running unified time reference;
calculating 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 the time offset to re-correct the timestamp of each data transmitted from the sensor hub.