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:
Aug. 20, 2013
Filed:
May. 29, 2008
Min Chen, Kowloon, HK;
Huajun Peng, Tai Po, HK;
Guoping Qiu, Fotan, HK;
Chun Kit Hung, Kowloon, HK;
Wei Zhang, Clear Water Bay, HK;
Min Chen, Kowloon, HK;
Huajun Peng, Tai Po, HK;
Guoping Qiu, Fotan, HK;
Chun Kit Hung, Kowloon, HK;
Wei Zhang, Clear Water Bay, HK;
Hong Kong Applied Science and Technology Research Institute Company Limited, Shatin, New Territories, Hong Kong, unknown;
Abstract
A method of reducing power consumption in a liquid crystal display illuminated by a backlight device includes dimming the backlight and adjusting the intensity of the image to compensate for the dimmed backlight. A dimming factor for the backlight is based on a clipping point determining from the pixel intensity distribution of the image signal. The intensity of the image is adjusted based on the dimming factor, wherein a first tone mapping function is used to adjust pixel intensities below an intensity threshold and a second tone mapping function is used to adjust pixel intensities above the intensity threshold.