Patent ID: 7106342
Filing Date: 2006-09-12
Classification: G09G

Abstract:
1. A method of controlling brightness of a user-selected area on a monitor screen, the method comprising: displaying an image frame comprising a plurality of image lines and a line pattern integrated in one of said plurality of image lines of said image frame; determining a starting point of a topmost image line of said displayed image frame as a reference point; detecting said line pattern included in one of said plurality of image lines of said displayed image frame, said pattern including an indicator signal wherein rising and falling edges of the indicator signal are aligned with vertical edges of the user-selected area; measuring horizontal distances of said vertical edges with respect to said reference point; identifying the user-selected area corresponding to a selected sub-area by calculating horizontal coordinates of the user-selected area from said measured horizontal distances; and amplifying a brightness gain of said identified user-selected area.