Patent ID: 7292284
Filing Date: 2007-11-06
Classification: H04N

Abstract:
1. An apparatus for displaying a double screen in a wide screen display device, the apparatus comprising: a video interface to receive first and second video signals from a plurality of video signals input from outside the display device according to a selection control signal, wherein each of the first and the second video signals has a general screen aspect ratio; a scaler to scale the first video signal to a resolution of a main screen with the general screen aspect ratio and to scale the second video signal to a resolution of a subscreen with the general screen aspect ratio, according to a scaling control signal; and a control unit to output the selection control signal to display the double screen, control scaling of the first and second video signals according to a main screen selection signal of the first video signal and a subscreen selection signal of the second video signal, and to simultaneously display the scaled first video signal on a screen and the scaled second video signal on a portion of a remaining area of the screen, wherein the control unit converts the main screen into the subscreen and the subscreen into the main screen according to a screen conversion signal, and when the main screen is converted into the subscreen, the control unit outputs the scaling control signal to gradually reduce the main screen while maintaining the general screen aspect ratio of the main screen, and when the subscreen is converted into the main screen, the control unit outputs the scaling control signal to gradually enlarge the sub screen while maintaining the general screen aspect ratio of the subscreen.