A Backlight Dimming Algorithm for Low Power and High Image Quality LCD Applications

被引：105

作者：

Cho, Hyunsuk ^{[1
]}

Kwon, Oh-Kyong ^{[1
]}

机构：

[1] Hanyang Univ, Div Elect & Comp Engn, Seoul 133791, South Korea

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2009年 / 55卷 / 02期

关键词：

Backlight dimming; LED backlight; Pixel compensation; LCD;

D O I：

10.1109/TCE.2009.5174463

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 TFT-LCD with LED backlight(1).

引用

页码：839 / 844

页数：6

共 8 条

[1]

[Anonymous], SID INT S

[2]

Funamoto T., 2000, IDW '00. Proceedings of the Seventh International Display Workshops, P1157

[3]

Ha SJ, 2008, IEEE ICCE, P19

[4]

Kerofsky L., 2006, SID06, P1242

[5] Backlight power reduction and image contrast enhancement using adaptive dimming for global backlight applications [J].

Lai, Chih-Chang ;

Tsai, Ching-Chih .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2008, 54 (02) :669-674

[6] Inverse of mapping function (IMF) method for image quality enhancement of high dynamic range LCD TVs [J].

Lin, Fang-Cheng ;

Lia, Cheng-Yu ;

Liao, Lin-Yao ;

Huang, Yi-Pai ;

Shieh, Han-Ping D. ;

Tsai, Po-Jen ;

Wang, Te-Mei ;

Hsieh, Yao-Jen .

2007 SID INTERNATIONAL SYMPOSIUM, DIGEST OF TECHNICAL PAPERS, VOL XXXVIII, BOOKS I AND II, 2007, 38 :1343-+

[7]

Raman A, 2005, BIOL ECOLOGY EVOLUTI, V1, P1

[8] High dynamic range display systems [J].

Seetzen, H ;

Heidrich, W ;

Stuerzlinger, W ;

Ward, G ;

Whitehead, L ;

Trentacoste, M ;

Ghosh, A ;

Vorozcovs, A .

ACM TRANSACTIONS ON GRAPHICS, 2004, 23 (03) :760-768

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