Patent ID: 7260653

Claim:
A method of checking clock synchronization between a first node and a second node communicating with each other through frames, the two nodes detecting a plurality a common reference events and each node having a clock and a counter that counts the number of clock pulses, the method comprising the steps of: calculating a first item of information representing a difference between the number of clock pulses counted by the clock of the first node and the number of clock pulses counted by the clock of the second node at the appearance of a first reference event from among the plurality of common reference events between the first and second nodes; calculating a second item of information representing a difference between the number of clock pulses counted by the clock of the first node and the number of clock pulses counted by the clock of the second node at the appearance of a second reference event from among the plurality of common reference events between the first and second nodes; and comparing the first and second items of information with one another so as to check the clock synchronization between the two nodes.