Method and a device for maintaining a synchronized local timer using a periodic signal
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United States of America Patent
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Sep 13, 2016
Grant Date -
Apr 16, 2015
app pub date -
Oct 15, 2014
filing date -
Oct 15, 2013
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Abstract
A method is provided for maintaining a synchronized local timer by using a periodic signal which comprises: providing a value of a clock cycle, and values for a first and second timer-parameters, wherein the first timer-parameter is less than the clock cycle value and the second timer-parameter is higher therefrom; providing values for a first (“a”) and second (“b”) arbitration parameters associated with the first and second timer-parameters respectively; upon receiving a periodic signal, adding to the local timer, at least once the first and/or the second timer-parameter, so that on average over one second, the first timer-parameter is added “a” times and the second timer-parameter is added “b” times, thereby ensuring that a value of the local timer essentially overlaps the period frequency of the periodic signal; upon receiving a subsequent periodic signal, setting the value of the local timer to a propagation delay of the periodic signal.
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