Problem 4 (20 points) We want to design a ngw vidco test patten generator that produces (osat eventy dividsd wintic r evenly divided vertical stripes on a 640-by-480 VGA screen. The colors of the stripes are red, green, blue, and white The 12-bit color is used in in the video system. The entity declaration is libraty Leee use ieee.std logic 1164 :a11 use ieee numeric std.all; entity vgen is porti n yin std logic vector (1D downto 01 1 bar rgb out std logie vector 11 downto 0) end vgen: The rgb signal is the12-bit output in which the 4 MSBs are the red color, the middle 4 bits are the green color, and the 4 LSBs are the blue color. Derive the architecture body. The x and y signals are connected to the torizontal count and vertical count of a frame counter