Time synchronization system
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United States of America Patent
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Oct 3, 2017
Grant Date -
Jun 2, 2016
app pub date -
Jul 1, 2014
filing date -
Jul 10, 2013
priority date (Note) -
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Abstract
A control device 2 includes a preset time determinator 22 for determining a preset time to be set to a first real-time clock of a terminal device 3 based on a second real-time clock. The terminal device 3 includes a latency time timer 34 for clocking a lapse of a latency time which is a period of time from the terminal device 3 acquiring the preset time until the preset time being set to the first real-time clock and is calculated in a clocking accuracy having the number of effective figures greater than that of the first real-time clock, and a time setter 32 for setting the preset time to the first real-time clock when the latency time is lapsed.
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