White-LED backlight control for motion-blur reduction and power minimization in large LCD TVs

被引：13

作者：

Lee, Wonbok ^{[1
]}

Patel, Kimish ^{[1
]}

Pedram, Massoud ^{[1
]}

机构：

[1] Univ So Calif, Dept EE, Los Angeles, CA 90089 USA

来源：

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY | 2009年 / 17卷 / 01期

关键词：

LED backlight; backlight scanning; backlight local dimming; motion blur; contrast ratio; low power; BOOSTING BACKLIGHT; COMPENSATION; LUMINANCE; DISPLAY; CELLS;

D O I：

10.1889/JSID17.1.37

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 1-D LED-backlight-scanning technique and a 2-D local-dimming technique for large LCD TVs are presented. These techniques not only reduce the motion-blur artifacts by means of impulse representation of images in video, but also increase the static contrast ratio by means of local dimming in the image(s). Both techniques exploit a unique feature of an LED backlight in large LCD TVs in which the whole panel is divided into a pre-defined number of regions such that the luminance in each region is independently controllable. The proposed techniques are implemented in a Xilinx FPGA and demonstrated on a Samsung 40-in. LCD TV. Measurement results show that the proposed techniques significantly reduce the motion-blur artifacts, enhance the static contrast ratio by about 3 x, and reduce the power consumption by 10% on average.

引用

页码：37 / 45

页数：9