嵌入式系统中视频采集与回放功能的实现  

Implementation of Video Capturing and Playing-back in Embedded System

作　　者：李浩[1] 原亮[1] 巨政权[1] 

机构地区：[1]军械工程学院计算机工程系,河北石家庄050003

出　　处：《微计算机信息》2008年第29期40-41,37,共3页Control & Automation

基　　金：国家自然科学基金项目:恶劣环境下芯片级自恢复系统的演化硬件机制研究(项目批准号60471022)

摘　　要：目前嵌入式系统中视频信息逐渐增多、回放质量要求不断提高,但基于USB技术的实时采集速率较低、且难以满足流畅播放要求。针对这种情况,介绍了一个主要由嵌入式处理器S3C2440A和SM501构建的视频采集回放系统,详细分析了硬件结构和软件模块的工作原理,给出了进行嵌入式视频采集工作的一般实现方法和设计流程,并完成了一个具体的演示系统。The amount and quality of video information is increasing rapidly in embedded system. But the rate of real time video capturing based on USB 1.1 technique is not satisfied in the meeting of the increasing demands of capturing and playing-back fluently. This paper presents a video capturing and playing system based on embedded processor S3C2440A and co-processor SM501, analyses the working principle of hardware architecture and software module in the details. A common designing method of embedded video system is brought forward, and then a real demo system is implemented also in this paper.

关 键 词：视频采集 嵌入式系统 LINUX SM501 V4L 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]