AMOLED的图像缩放及时序控制方案

Image Scaling and Timing Control Scheme for AMOLED

为研制中的分辨率为640×RGB×480的有源矩阵有机发光显示器(AMOLED)设计了图像缩放和时序控制方案。为了达到良好的显示效果且同时节省硬件资源,水平缩放采用基于边缘的插值算法,垂直缩放采用双线性插值算法;此外,利用图像缩小后产生的"行空白"时间增加写屏时间,避免了片外存储器的使用。FPGA验证结果表明,该方案可以实现64级灰度的VGA AMOLED的动态视频显示。

A image scaling and timing control scheme based on active matrix organic light emitting display（AMOLED） with RGB×640×480 resolution（VGA） is proposed in this letter.To achieve a high quality image and fewer hardware resources,the edge-based algorithm was adopted in horizontal interpolation and bilinear algorithm in vertical interpolation;Without off-chip memory,the time for writing panel was extended by ＇horizontal black time＇ which stems from image scaling down.Experiments based on FPGA effectively demonstrate that the scheme can realize the dynamic video display on VGA AMOLED with 64 gray scales.