Patent ID: 7538821
Filing Date: 2009-05-26
Classification: G09G,H04N,Y10S

Abstract:
1. A display apparatus comprising: a classifier to detect whether each pixel of each line of sequentially input frames of an input image is a black pixel of a letter-box area; a counter to count a number of black pixels detected in each line; a determiner to determine a maximum value of consecutive black pixels in each line; a letter-box detector to detect a boundary of the letter-box area in each frame using the counted number of black pixels and the determined maximum value in each line; a boundary determiner to determine final boundaries of the letter-box area by determining a line to be one of the final boundaries of the letter-box area if the letter box detector detects the line as the boundary of the letter-box area a predetermined number of times or more in the frames of the input image; and an adjuster to adjust a size of the input image such that an image area within the final boundaries of the letter-box area is fit to a size of a screen.