Vehicle-mounted navigation and audio-video multimedia system having multi-channel video recording function

The invention relates to the technical field of vehicle-mounted navigation and multimedia, and specifically relates to a vehicle-mounted navigation and audio-video multimedia system having the multi-channel video recording function. The system comprises a camera group, a video dividing unit, a video recording unit and a main processor unit, wherein the video dividing unit, the video recording unit and the main processor unit are connected with each other, and the camera group is connected with the video dividing unit. The system also comprises a base plate control unit, and the base plate control unit which can send corresponding commands based on the received vehicle control signals is connected with the main processor unit. The system integrates various functions of the vehicle-mounted electrical devices, effectively reduces the number and the volume of the devices, improves the reliability of the system, and can be widely used for the vehicle-mounted electrical devices.