The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2000
Filed:
Jul. 22, 1997
Yong-Hee Kim, Kyungki-do, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
In a color adjustment method for a video display apparatus, the display apparatus is initialized and a mean luminance value L is calculated from a maximum luminance value and a minimum luminance value of the display apparatus when powered up. The hue and saturation data, which are received in accordance with a keypress, are transformed into RGB control data by hue and saturation conversions. The saturation data denotes a distance from a white point on an X-Y chromaticity coordinate system of the display apparatus to a chromaticness point on the chromaticity coordinate system, and the hue data denotes an angle made by a first line connecting a red point on the coordinate system and the white point with a second line connecting the white point and the chromaticness point. Finally, the gains and DC biases of the RGB video signals are controlled on the basis of the RGB control data. Thus, a user can easily and variously control the color of a video display apparatus by hue and saturation keys for color adjustment, without the help of one skilled in the art.