Time synchronizing method for AVB in vehicle and system thereof
AssigneeHyundai Mobis Co., Ltd.
InventorBo Seob Lim
Life of this patent
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Abstract
Disclosed are a time synchronizing method under a vehicle AVB environment and a system using the same. An AVN, which communicates with at least one device which is provided in a vehicle and performs a predetermined operation under an Ethernet AVB environment, synchronizes the at least one device by receiving a RTC time information message in the form of a RTC protocol packet which applies an IP protocol. Therefore, various services which synchronize a plurality of devices in the vehicle are provided, to improve convenience of a driver.
Claims19
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.
A time synchronizing system under a vehicle Audio Video Bridging (AVB) environment, the system comprising:
- at least one device which is provided in a vehicle, includes a Real Time Clock (RTC), generates a RTC time information message, and performs a predetermined operation;
- and an Audio Video Navigation (AVN) which is provided in the vehicle, maps the 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 under an Ethernet AVB environment and stores the mapped information, registers a corresponding device when it is determined that N stored RTC Time information messages are continuously received, and sets 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.
Dependencies are inferred from the claim text.