【摘要】 网络接口对于图像在局域网或因特网中传输起着关键作用。讨论了基于TCP/IP协议用于网络相机的网络接口,采用MAC控制器芯片和51单片机,实现了一种实用的、低成本的网络接口方案。给出了网络接口的硬件组成框图。针对具体的网络相机应用背景,讨论了接口相关协议的实现方法以及基于Winsock的编程接收,并对通过UDP协议传输图像时丢包和包失序现象产生的原因及处理方法进行了探讨。最后给出了在局城网环境下的实验结果。更多还原

【Abstract】 Network interface plays a key part in image transmitting over LAN or Internet. In this paper the network interface used for network cameras based on TCP/IP protocols is dealt with. A cheap and practical scheme of network interface is realized which adopts MAC controller and single-chip microcontroller. The hardware composition is given and the realization of the related protocols and the receiving based on Winsock API for the network camera application is discussed. The reasons and processing methods about the phenomena of the packet lost and packet out-of-order in image transmitting utilizing UDP protocols are also discussed. The experimental results are given in the end based on the LAN condition.更多还原