摘要
提出了一种基于VxWorks的视频会议嵌入式系统的设计与实现方法。系统主要由编码、解码终端和网管中心 3部分组成。编码终端基于VxWorks操作系统和嵌入式微处理器MPC860硬件平台,进行实时视频采集压缩,通过网络接口传输数据,同时根据接收的通过串口以及网口到达的控制信令,动态修改终端工作参数配置。解码终端工作过程与编码相反。网管中心基于Windows操作系统,利用WinSock套接字应用程序接口(API),实现终端之间数据包的定向转发、终端控制信令的发送与接收、终端状态的查询以及压缩数据的存储。
The design and implementation of a video conference embedded system based on VxWorks are described in this paper. This system consists of three parts： code-terminal, decode-terminal and net-control center. The encode - terminal , based on VxWorks and MPC 8 6 0 , performs real - time video capture and encoding and then sends the compressed data through network interface. Meanwhile, the encode-terminal sets working parameters according to control token sent from serial port or network interface. The decode-terminal just does the contrary. The net - control center , by using APIs of WinSock , takes charge of transferring data between terminals, sending and receiving control token of terminal, inquiring terminal＇ s working status and saving video data using the compressed original format.
出处
《电子工程师》
2005年第3期37-39,共3页
Electronic Engineer
