Abstract: It divides the network communication protocol for the communication between automobile into a software protocol layer (L1), a signal protocol layer and a physical protocol layer wherein the software protocol layer is used for checking coding and decoding the data required to be sent and received by a system, and the signal protocol layer is used for performing combined coding of data package signals and basic light signal on data packages produced by the software protocol layer according to the protocol agreement, and the physical protocol layer is used for converting digital signals and light signals mutually. A device comprises a light receiving apparatus arranged at the head of the automobile and a light emitting device, which collects the operating status information of automobile, performs information exchange with surrounding automobiles through digital information, arranged at the tail of the automobile.

Abstract: It divides the network communication protocol for the communication between automobile into a software protocol layer (L1), a signal protocol layer and a physical protocol layer wherein the software protocol layer is used for checking coding and decoding the data required to be sent and received by a system, and the signal protocol layer is used for performing combined coding of data package signals and basic light signal on data packages produced by the software protocol layer according to the protocol agreement, and the physical protocol layer is used for converting digital signals and light signals mutually. A device comprises a light receiving apparatus arranged at the head of the automobile and a light emitting device, which collects the operating status information of automobile, performs information exchange with surrounding automobiles through digital information, arranged at the tail of the automobile.

Abstract: The present invention relates to a birds-eye view system-based parking assist method, characterized in that according to the information of the birds-eye view system a parking assist device assists parking; the method specifically comprises the following steps: 1) the parking assist device selects a parking mode according to a mode select signal, wherein the parking mode includes parallel parking mode and angular parking mode; 2) the parking assist device receives speed information and steering information of a vehicle and panorama video information of the birds-eye view system, and calculates the real-time running direction and position of the vehicle; and, 3) in the currently selected mode, the parking assist device outputs parking guide information according to the panorama video information of the birds-eye view system and the current running direction and position of the vehicle, and displays the parking guide information on the user interface of the vehicle.