Patent ID: 7877648

Claim:
A method of calculating a time offset (t 0 ) between first and second processor nodes to be synchronised comprising the steps, performed at the first processor node, of: sending a first processor synchronisation signal at a first synchronisation instant (t 1 s); receiving a second processor synchronisation signal at a first receipt instant (t 2 sr 1 ), wherein said second processor synchronisation signal was sent by said second processor node at a second synchronisation instant (t 2 s) and wherein the offset (t 0 ) to be calculated comprises the difference between the first (t 1 s) and second (t 2 s) synchronisation instants; receiving the time of a second receipt instant (t 1 sr 2 ), at which the first processor synchronization signal arrived at the second processor node; and computing the time offset (t 0 ) as a function of the times of sending and receiving the signals.