1. A camera image display system of audio video navigation (AVN), comprising: a central processing unit (CPU) configured to control an AVN system; a camera only graphical driver configured to be booted at a kernel stage of an initial booting of the CPU to process a camera image; an integrated graphical driver configured in the CPU to process remaining images other than the camera image which is processed by the camera only graphical driver; and a display configured to display the camera image output from the CPU, wherein the camera only graphical driver is configured in a kernel at the kernel stage which is an initial stage of the booting, wherein when the CPU is booted, the camera only graphical driver is simultaneously booted with the kernel, wherein the camera only graphical driver is configured in the kernel separately and independently from the integrated graphical driver, and wherein the camera only graphical driver is formed with an image pass portion and a scaler portion for displaying only the camera image, and wherein the image pass portion and the scaler portion are separated from the integrated graphical driver and then slimmed at the kernel stage of the CPU.