Patent ID: 9521638
Filing Date: 2016-12-13
CPC Classification: H04B,H04J,H04N,H04W

Claim Text:
1. A time synchronizing method under a vehicle Audio Video Bridging (AVB) environment of a time synchronizing system including at least one device which is provided in a vehicle and performs a predetermined operation and an Audio Video Navigation (AVN) which communicates with the at least one device under an Ethernet AVB environment, the method comprising: transmitting, by the at least one device, a Real Time Clock (RTC) time information message to the AVN; mapping, by the AVN, RTC information of the AVN to device RTC time information included in the RTC time information message when the RTC time information message is received from the at least one device to store the mapped information; determining, by the AVN, whether N RTC time information messages are continuously received from each of the at least one device; and registering, by the AVN, the device as a device to interwork with the AVN when the N RTC time information messages are continuously received and setting a synchronous time using a time difference between the device RTC time information and the AVN RTC time information which are mapped with each other.