LED BACKLIGHT CONTROL DEVICE, LED BACKLIGHT CONTROL METHOD, LED BACKLIGHT CONTROL MODULE, AND DISPLAY DEVICE

摘要

Disclosed is an LED backlight control device, wherein a light intensity calculation unit (106) acquires DC coefficients which are DCT coefficients of a direct-current component corresponding to blocks which are to undergo orthogonal transformation, performing said acquiring from encoded data generated by encoding processing, which accompanies orthogonal transformation, being performed on a block-by-block basis in an image. Using the values obtained from k DC coefficients, a LED driver IC (110) controls the light intensity of an LED module, which corresponds to blocks that correspond to the k DC coefficients, among a plurality of LED modules included in a LED backlight module (112).