彩色等离子体显示器准备期动态修正技术

开发了一种彩色等离子体显示器的新型准备期动态修正技术,具有高对比度、低能量寻址、消除动态假轮廓(CLEAR)的特点,利用输入图像灰度的加权平均值与预置的灰度阈值比较,动态地调整准备期在1场中的位置,使动态调整后的灰度值能够更加真实地反映输入图像灰度的分布情况.同时,利用相邻两场采用不同子场编码与准备期动态修正相结合的改进技术,大幅度增加了显示灰度级数目.仿真结果表明,准备期动态修正CLEAR技术在消除动态假轮廓的同时,增强了对低灰度级图像的显示能力,并且最大限度地提高了整幅图像的显示质量.

New Technique of Preparing Period Dynamic Correction for Color Plasma Display Panel

A novel preparing period dynamic correction technique is developed for alternate-current plasma display panel (PDP). It has the characteristics of high contrast, low energy addressing and reduction of false contour sequence (CLEAR). By comparing the weighted average of the grey level of the input image with the pre-settled gray level thresholds, the placement of the preparing period during one field time is dynamically adjusted such that the adjusted grey level can more closely reflect the input image grey level distribution. Meanwhile, using the technique which incorporating the preparing period dynamic correction with the different sub-field code schemes within two neighboring field, the number of the display grey scale can be increased enormously. Simulation results show that CLEAR technique enhances the capability of displaying the image with low grey level, and improves farthest the display quality of the whole image while eliminating the dynamic false contour.