| US 7,583,318 B2 | ||
| Apparatus and method for controlling hue and luminance in image display device | ||
| Hyun-wook Ok, Goyang-si (Korea, Republic of); Seong-deok Lee, Suwon-si (Korea, Republic of); and Chang-yeong Kim, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of) | ||
| Filed on Sep. 20, 2005, as Appl. No. 11/229,642. | ||
| Claims priority of application No. 10-2004-0074938 (KR), filed on Sep. 20, 2004. | ||
| Prior Publication US 2006/0061588 A1, Mar. 23, 2006 | ||
| Int. Cl. H04N 9/64 (2006.01); H04N 9/67 (2006.01); H04N 7/01 (2006.01); H04N 11/20 (2006.01); H04N 9/77 (2006.01); G09G 5/02 (2006.01); G03F 3/08 (2006.01); G06K 9/00 (2006.01) | ||
| U.S. Cl. 348—453 [348/577; 348/649; 348/661; 348/664; 345/589; 358/520; 382/167] | 13 Claims |
| 1. A method for converting input image signals into image signals that can be displayed in an image display device, the method
comprising:
converting color components of the input image signals and color components that can be displayed in the image display device
into color space, respectively;
comparing a converted color gamut with each other to calculate a hue control variable; and
controlling hues of the input image signals using the hue control variable,
wherein the comparing operation includes:
obtaining hue and luminance corresponding to the maximum chromaticity of the input image signals and hue and luminance corresponding
to the maximum chromaticity of the image signals that can be displayed in the image display device, from the converted color
gamut; and
calculating the hue control variable using the obtained hue and luminance, and
wherein the hue control variable is a distance of the hue of the input image signal to coincide hue of the color coordinates
having the maximum luminance of the input image signals with hue of the color coordinates having the maximum luminance of
the image signals that can be displayed in the image display device.
|