Patent ID: 11943688
Assignee: WHELEN ENGINEERING COMPANY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H  B | IPC H

Claim 27:
28. A synchronization method, comprising:
transmitting, by a global time source, a periodic pulse signal which is repeated for every predetermined time period;
determining, by the global time source, a first time corresponding to a rising edge of the, pulse signal;
transmitting, by the global time source, a synchronization message containing a tx timestamp corresponding to the first time;
receiving, by a node, the period pulse signal;
triggering, by the node, an internal timer upon the rising edge of the pulse signal;
determining, by the node, a second time at which the internal timer is triggered;
storing, by the node, a trigger timestamp corresponding to the second time;
receiving, by the node, the synchronization message;
determining, by the node, a current local time at which the synchronization message is received;
reading, by the node, the tx timestamp in the synchronization message;
adjusting, by the node, the current local time of the node by adding a difference between the tx timestamp and the trigger timestamp; and
setting, by the node, the adjusted current local time as a global time.