基于Blackfin 533的高速稳定视频显示技术  

High-Speed Stable Display Technology Based on Blackfin 533

作　　者：汪国有[1] 李乔亮[1] 

机构地区：[1]华中科技大学图像识别与人工智能研究所,武汉430074

出　　处：《计算机与数字工程》2006年第1期87-90,共4页Computer & Digital Engineering

摘　　要：随着信息化程度的不断提高,人们对各种媒体系统的视频分辨率有了越来越高的要求。然而在视频输出系统中,面对巨大的视频数据量,如何高速稳定的输出这些原始的视频数据一直是研究的重要内容之一。本文以AD公司Blackfin 533 DSP为硬件平台,着重讨论两种解决方案,并提出自定义的行切换技术,以实现低带宽高帧频的视频输出。试验结果表明,本文提出的方案不仅解决了视频输出的稳定性和系统并发处理等问题,同时也达到了耗费低带宽的极限。With development of the information industry, people are more and more critical about the video quality of various media systems. How to convey the n＇.ass video data efficiently is still one of the most important points in our research. Two solutions based on Blackfin 533 DSP are diiscussed and row-switch method is prompted in order to output video data at high frame rate. h has been proved that these solutions not only resolve the problems of output stability and parallel access,but also fully utilize the bandwidth, whose limitation is reached.

关 键 词：视频显示 高速 输出 DSP DMA 

分 类 号：TP334.3[自动化与计算机技术—计算机系统结构]