Patent ID: 9709680
Date: 2017-07-18
CPC Classifications: G01S,H04J

Claim:
1. A method comprising: receiving, at a time distribution device, a first time signal from a first precision time source via a first time receiver; distributing, by the time distribution device a time signal to a time-dependent device, wherein the time-dependent device is dependent on the time distribution device for a precision time reference; receiving, at the time distribution device, a second time signal from a second precision time source via a second time receiver, the second time signal independent from the first precision time source; comparing, by a time quality component of the time distribution device, the first time signal with the second time signal; detecting, by the time quality component of the time distribution device, a failure of the first precision time source in response to the comparing showing that a variation of the first time signal from the second time signal exceeds a defined margin; and, upon detection of the failure of the first precision time source, the time distribution device distributing to the time-dependent device the time signal based on the second time signal.