Patent ID: 7719551
Filing Date: 2010-05-18
Classification: G09G

Abstract:
1. An image display apparatus comprising: a fixed pixel display device which displays an image based on an input video signal to the image display apparatus; a detector which detects brightness information of the input video signal; a black correction processor which performs a black correction to the input video signal based on the detected brightness information of the input video signal so as to obtain a margin between the input video signal and an upper limit of a dynamic range, wherein the black correction processor increases a quantity of the black correction according to the detected brightness information if a level of the detected brightness information is equal to or greater than a predetermined value, wherein the black correction processor does not perform black correction if the level of the detected brightness information is less than the predetermined value; a contrast controller which controls a contrast of the input video signal; and a controller which controls the contrast controller so as to control the contrast of the input video signal according to the margin obtained by the black correction in the black correction processor if the quantity of the black correction is equal to or greater than a predetermined value.