Patent ID: 11968639
Assignee: MAGNA ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A vehicular control system, the vehicular control system comprising:
a first electronic control unit (ECU) disposed at a vehicle equipped with the vehicular control system;
a second ECU disposed at the equipped vehicle;
wherein the first ECU and the second ECU are in digital communication with one another via a communication link;
wherein the first ECU transmits, to the second ECU via the communication link, a first bit pattern having a first sequence of binary digits;
wherein the second ECU, responsive to receiving the first bit pattern from the first ECU, transmits, to the first ECU via the communication link, a second bit pattern having a second sequence of binary digits;
wherein the first ECU, responsive to receiving the second bit pattern from the second ECU, determines a propagation delay based on a time interval between (i) when the first ECU transmits the first bit pattern to the second ECU and (ii) when the first ECU receives the second bit pattern from the second ECU; and
wherein the first ECU transmits a time synchronization frame to the second ECU via the communication link, and wherein the time synchronization frame is comprises a timestamp and a correction time, and wherein the correction time comprises the determined propagation delay.