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

Claim 17:
18. A synchronization system, comprising:
a global time source configured to:
transmit a periodic pulse signal which is repeated for every predetermined time period;
determine a first time corresponding to a rising edge of the pulse signal;
transmit a synchronization message containing a tx timestamp corresponding to the first time;

a node configured to:
receive the period pulse signal;
trigger an internal timer upon the rising edge of the pulse signal;
determine a second time at which the internal timer is triggered;
store a trigger timestamp corresponding to the second time;
receive the synchronization message;
determine a current local time at which the synchronization message is received;
read the tx timestamp in the synchronization message;
adjust the current local time of the node by adding a difference between the tx timestamp and the trigger timestamp; and
setting the adjusted current local time as a global time.