Patent ID: 8843615
Filing Date: 2014-09-23
Classification: H04J,H04L

Abstract:
1. A method for measurement of time deviation of an electronic equipment item connected to a network and configured to provide a time-stamping, comprising: capturing, at the electronic equipment item, at least a first message including a first standard reference time circulating on the network and time-stamping when the at least first message is received at the electronic equipment item according to a first time observed by a time-stamping function of the electronic equipment item, and capturing, at the electronic equipment item, at least a second message including a second standard reference time circulating on the network and time-stamping when the at least second message is received at the electronic equipment item according to a second time observed by the time-stamping function of the electronic equipment item; and determining a deviation of the time-stamping function of the equipment item by comparing a first value with a second value, the first value being a period elapsed between the first time observed by the time-stamping function of the electronic equipment item and the second time observed by the time-stamping function of the electronic equipment item, and the second value being a difference in the first standard reference time included in the first message and the second standard reference time included in the second message.