VEHICULAR ELECTRONIC DEVICE, OPERATION METHOD OF VEHICULAR ELECTRONIC DEVICE, AND SYSTEM

The present disclosure relates to a vehicular electronic device including a power supply configured to supply power, an interface configured to receive high-definition (HD) map data on a specific area from a server through a communication device, and at least one processor configured to continuously generate electronic horizon data on a specific area based on the HD map data in the state of receiving the power, wherein the processor generates first electronic horizon data on a first section, and, upon determining that a vehicle is traveling the first section again after having travelled the first section based on the first electronic horizon data, does not generate electronic horizon data on the first section.