PWM METHOD FOR BRIGHTNESS ADJUSTMENT OF ELECTRIC BULLETIN BOARD AND THE METHOD FOR SAVING THE RESULT THEREOF

摘要

A PWM method for adjusting brightness of an electric signboard and a method for saving the result in a memory are provided to improve brightness control and display quality and to minimize a data processing time by reducing calculation amounts required for a PWM process. An image data is received(S302), it is determined whether the received image data is in a standard position(S304). An address of an RGB memory is increased(S306), it is determine whether the address is smaller than the number of pixels(S308). When the address is smaller than the number of pixels, the image data is stored in the RGB memory(S310). When the address is not smaller than the number of pixels, a PWM(Pulse Width Modulation) process is executed(S312).