Title :
A backlight dimming algorithm for low power and high image quality LCD applications
Author :
Cho, Hyunsuk ; Kwon, Oh-Kyong
Author_Institution :
Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
fDate :
5/1/2009 12:00:00 AM
Abstract :
A new backlight dimming algorithm is proposed to reduce power consumption of backlight and improve image quality in LCD applications. The proposed algorithm is consisted of two new techniques: the brightness modulation of the backlight and pixel compensation. The power saving ratio of four typical benchmarking images is 14-43% by using proposed brightness modulation algorithm. The proposed pixel compensation removes the clipping artifact and unnecessary luminance reduction. The proposed backlight dimming algorithm is demonstrated on 7-inch TFTLCD with LED backlight.
Keywords :
LED displays; brightness; image resolution; liquid crystal displays; backlight compensation; backlight dimming algorithm; brightness modulation algorithm; high image quality LCD; pixel compensation; Brightness; Consumer products; Data mining; Energy consumption; Histograms; Image quality; Liquid crystal displays; Pixel; Power engineering and energy; Power engineering computing; Backlight dimming, LED backlight, Pixel; compensation, LCD;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2009.5174463
