论文部分内容阅读
视频节目信号的数字化是网络化的前提,网络化是高速信息交换的基础。视频节目信号的数字化又促进了通信、计算机和广播电视业相互融合。随着Internet技术的不断发展和计算机处理能力的不断提高,要实现视频信号的高质量远程传送播放,需解决的关键问题在于信号的压缩及传输技术。视频传输不但需要有较大的带宽,还要有较好的稳定性和可伸缩性。本文对目前能够实现视频传输的几种接入技术进行了一些粗浅的分析比较。
The digitization of the video program signal is the prerequisite of network. Network is the basis of high-speed information exchange. The digitization of video program signals has also facilitated the convergence of communications, computer and radio and television industries. With the continuous development of Internet technology and the continuous improvement of computer processing capability, the key problem to be solved in order to realize the high quality remote transmission and playback of video signals lies in the signal compression and transmission technologies. Video transmission not only requires a larger bandwidth, but also better stability and scalability. This text has carried on some superficial analysis and comparison to several access technologies that can realize the video transmission at present.