基于数字微反射镜器件(DMD)灰度显示帧频提高技术研究  

Research on Improving Display Frame Rate of Gray Scale Image Based on Digital Micro-mirror Device

作　　者：周浩[1] 张涛[1] 崔文楠[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《科学技术与工程》2014年第21期257-261,共5页Science Technology and Engineering

摘　　要：数字微反射镜器件(DMD)相对于LCD、CRT,具有相对高对比度、高均匀性以及高稳定性的特点,特别相对高帧频的优势使其成为目标模拟器显示首选。为了进一步提高DMD显示帧频,分析DMD工作原理并研究三种DMD灰度显示调制方法对帧频的影响,找出约束帧频进一步提高的因素,进而提出减小PWM调制的时间基数并采取补偿措施,从而提高8 bit灰度图像的显示帧频至457.45 Hz。Digital Micro-mirror Device features relative high contrast, uniformity, stability and high frame rate compared with LCD and CRT. Especially, its advantage of relative high frame rate makes it become the first choice of target simulators as display part. To further improve frame rate of DMD, how DMD works and influence which three gray modulation method brings on DMD display frame rate were described. Then, restriction factors on frame rate were found and the corresponding compensation solution was raised. As a result, the frame rate of DMD which displays 8-bit grayscale image was improved to 457.45 Hz.

关 键 词：DMD PWM脉宽调制 提高帧频 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]