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:
Jul. 21, 2009
Filed:
Mar. 24, 2006
Hsu-pin Kao, Chang Hua Hsien, TW;
Tsan-hung Tsai, Sanchong, TW;
Yi-chia Shan, Jhongli, TW;
Hsu-chia Kao, Pingjhen, TW;
Hsu-Pin Kao, Chang Hua Hsien, TW;
Tsan-Hung Tsai, Sanchong, TW;
Yi-Chia Shan, Jhongli, TW;
Hsu-Chia Kao, Pingjhen, TW;
Marketech International Corp., Taipei, TW;
Abstract
The present invention provides a method to automatically regulate brightness of liquid crystal displays (LCDs), which resolves the overload and easy fatigue of human eyes and poor image contrast due to high brightness of the conventional LCD. The present invention includes use of four parts, including an image brightness regulating unit, an image brightness ratio computation and output controlling unit, an ambient light detection and brightness adaptation regulating unit and an image gray level expanding unit. The image signals of an LCD are processed in such a manner to enable automatic control of optical flux of LCD TV by regulating the gray level of output images. Also, optical flux of LCD TV can be automatically controlled with the change of images and ambient light, thus alleviating overburdening of human eyes and improving the contrast and comfort of images for a better visual effect.