Method and device for producing white color component and controlling brightness in display original set

Application Number: 00108204
Application Date: 2000.04.28
Publication Number: 1291849
Publication Date: 2001.04.18
Priority Information: 1999/10/8 KR 43481/1999
International: H04N9/64;H04N9/77
Applicant(s) Name: Samsung Electronics Co., Ltd.
Inventor(s) Name: Lee Seung-Dok;Kim Chang-Yong;Park Du-Sik
Patent Agency Code: 11038
Patent Agent: yang guoxu
Abstract A method and apparatus for generating a white signal component and for controlling the brightness of an image are provided. In the above method and apparatus, the brightness increases of Red, Green and Blue, the saturations of which are not decreased from an input image are calculated using a vector, and the minimum value of such increases is utilized as the input value for the white component. Further, by adding brightness control components of RGB color to the input RGB signals, brightness increases in the direction of the original colors instead of the achromatic one are possible, which is the way the white component is added so as to increase the luminance of color display devices representing a color using a color filter such a flat panel display. Accordingly, a color saturation of the image is not decreased even with addition of the achromatic color component.