Display apparatus and control method thereof

摘要

A method and apparatus are provided for adjusting the contrast ratio in a display apparatus. The display apparatus includes a signal input module (10) which receives a video signal and a signal processing module (50) which processes the video signal received from the signal input module (10). A display module (70) has a display panel (77) and a panel driver (71, 73, 75) for driving the display panel (77), and a controlling module (90) calculates the luminance of the video signal and controls at least one of the signal processing module (50) and the panel driver (71, 73, 75) to adjust a contrast ratio of the video signal output to the display panel (77) based on the mean of the calculated luminance.