针对当前多路视频采集远程传输系统存在的问题,提出一种基于ARM 11和FPGA的解决方案,分析了系统的组成结构和关键技术.应用FPGA首先实现了对多路视频信号的同步采集,其次解决了对视频缓存操作过程中的存储、读写冲突及时钟同步问题,最后生成BT.656格式视频流进行后续处理.利用高性能ARM11处理器内部MFC模块,完成了对视频信号的H.264编码.系统采集到的多路视频信号通过网络发送,监控端实时接收数据,进行解码后显示,具有广阔的应用前景.%Aimed at the problem of multi-channel video acquisition and transmission, a new scheme based on ARM 11 and FPGA is put forward. The configuration and key technology of system are analyzed. Firstly, FPCA realizes the acquisition of the multi-channel video signal with synchronization. Secondly, the problem of storage, collision between read and write, and the clock synchronization are resolved during operating the video cache. Finally, the video stream of BT.6S6 is created to deal with next. The video data is encoded by the MFC of ARM 11 processor and transferred through net. The monitor decodes the receiving data and shows with strong practical and broad application prospects.
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