Patent ID: 6329998
Filing Date: 2001-12-11
Classification: G09G,H04N

Abstract:
A multiple screen TV processor comprising:at least one of a format change detector and a window change detector, said format change detector being operable to detect a change in an input image of a screen window in terms of at least one of image format, image aspect ratio and image frame rate, said window change detector being operable to detect a change in said input image in terms of which screen of a multiple screen window is selected;a modifier receiving the input image for a screen window and modifying the image, said modifier outputting the modified image;a first processor generating a background image, for the screen window to overlay residuary image portions arising due to a change in the input image, before said modifier outputs the modified image; anda first switch, responsive to the detection of a change by said format change detector and said window change detector, for selectively outputting either the modified image after said first processor generates the background image or the modified image without the background image;a second processor receiving the selected output of said first switch and preparing the selected image to be displayed on the screen window.