Brightness preservation for LCD backlight dimming

被引：51

作者：

Kerofsky, Louis ^{[1
]}

Daly, Scott ^{[1
]}

机构：

[1] Sharp Labs Amer, Camas, WA 98607 USA

来源：

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY | 2006年 / 14卷 / 10-12期

关键词：

low power; LCD; brightness compensation; backlight dimming; backlight scaling; DISPLAYS;

D O I：

10.1889/1.2408394

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：

Backlight dimming is a dominant method for power reduction in LCDs. Image processing with a simple boost and clip can compensate for such dimming-restoring image brightness. We propose a low complexity approach which replaces hard clipping with smooth roll-off to reduce clipping artifacts. An additional high-quality approach uses a two-channel spatial-frequency decomposition to preserve highlight detail attenuated by the roll-off. image quality is improved and power savings can be increased by more-aggressive backlight dimming.

引用

页码：1111 / 1118

页数：8

共 9 条

[1] Methods for characterizing CRT displays [J].