摘要
文章提出并实现了一种基于CDMA2000-1X无线网络的远程视频监控终端及系统。该终端采用DM642作为处理器,结合高压缩比的H.264视频压缩算法,并通过无线网络发送视频数据;介绍了该终端设计和实现中的关键技术,包括监控终端的软、硬件结构;分析基于PPP的嵌入式网络接口的实现方法,并根据TI的网络开发包提出了一种基于HDLC API的设计方法。最后,利用该终端结合上位机实现完整的视频监控系统。实验结果表明,该系统充分利用了CDMA传输带宽,达到了实时传输的要求。
A long-distance video monitoring terminal and a system which are based on CDMA 2000 1X wireless network are proposed and realized. This terminal adopts DM642 as the processor, combines with the H. 264 video compression algorithm which has highly efficient compression ratio, and sends constringent video data by wireless network. The key technique in the process of designing and realization is introduced, including the structure of software and hardware for the monitoring terminal. The design and realization of embedded network interface based on PPP protocol are analyzed, and a design method based on the HDLC API is given according to the NDK（Network Develop Kit） of TI Company. Finally, a video monitoring system which makes use of this terminal is completed. The experiment results show that the system makes full use of the bandwidth of CDMA and achieves the real-time transmission.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第8期1185-1188,共4页
Journal of Hefei University of Technology：Natural Science
关键词
视频监控
无线拨号
PPP协议
video monitoring
wireless dial-up
point-to-point（PPP） protocol
