Patent ID: 7738004

Claim:
A display apparatus to display a picture according to an input video signal, comprising: an auto-adjustment button to select an auto-adjustment function; and a controller to implement a quick auto-adjustment function when the input video signal is determined to be changed in a display mode, where a resolution of the display mode is changed according to the input video signal, and to implement a detailed auto-adjustment function when the auto-adjustment function is selected by the auto-adjustment button, the quick auto-adjustment function having a shorter running time than the detailed auto-adjustment function, wherein the controller compensates a preset setting value that includes a total number of horizontal pixels for horizontal resolution of the display mode by adding or subtracting a predetermined additional value to or from the total number of horizontal pixels of the preset setting value to increase or decrease a time implementing the auto-adjustment function, and the quick auto-adjustment function having the larger additional value than the detailed auto-adjustment function.