Patent ID: 7609282
Filing Date: 2009-10-27
Classification: G09G,H04N

Abstract:
1. An image display apparatus for performing a specified process on an input image signal and displaying an image based on the image signal on a display unit, comprising: a detector unit which detects an average luminance level of the image based on the input image signal; and a controller which performs a sharpness adjustment for correcting contours of the image according to the average luminance level detected by said detector unit, wherein the controller includes a predetermined reference average luminance level as a center correction value corresponding to a user adjustment value set by a user; and wherein the controller determines a correction amount of the sharpness adjustment so as to reduce a sharpness of the image to less than the user adjustment value when the detected average luminance level is lower than the predetermined reference average luminance level and to increase the sharpness of the image to more than the user adjustment value when the detected average luminance level is higher than the predetermined reference average luminance level.