| US 7,538,821 B2 | ||
| Display apparatus to detect letter-box boundary and method of displaying image using the same | ||
| Won-seok Ahn, Seoul (Korea, Republic of); and Young-ho Lee, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, Suwon-si (Korea, Republic of) | ||
| Filed on Oct. 18, 2005, as Appl. No. 11/252,035. | ||
| Claims priority of application No. 10-2004-0113803 (KR), filed on Dec. 28, 2004. | ||
| Prior Publication US 2006/0139492 A1, Jun. 29, 2006 | ||
| Int. Cl. H04N 5/46 (2006.01) | ||
| U.S. Cl. 348—558 [348/913] | 41 Claims |
| 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.
|