Managing a time reference
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United States of America Patent
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Apr 18, 2023
Grant Date -
N/A
app pub date -
Dec 7, 2021
filing date -
Sep 5, 2019
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Abstract
A system for managing a time reference includes a real-time clock, an interface, and a processor. The real-time clock store an RTC time. The interface is configured to receive a GPS time and a cellular time. The processor is configured to: indicate to start a time-speed adjustment loop; determine a true time based at least in part on the GPS time and the cellular time; determine an error between the true time and the RTC time; determine an RTC speed calibration adjustment based at least in part on the error; and adjust the real-time clock speed based at least in part on the RTC speed calibration adjustment.
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