随着科学技术的不断发展,网络在我们的日常生活中正发挥着它重要的作用。现在,网络上传递的信息种类越来越多,从最初的文字信息发展到目前的文字、图像、声音、视频、动画等几乎所有种类的信息。因为需要传递的信息种类的增多,尤其是需要同时传递多种信息的时候,对计算机网络的数据传输技术也提出了新的要求。在不断提升网络带宽的同时,网络多媒体技术也在不断地发展,包括数据的压缩编码和用于发布媒体的网络技术。随着宽带网络系统的建成和发 With the continuous development of science and technology, the Internet is playing an important role in our daily life. Nowadays, there are more and more kinds of information on the Internet, from the initial text information to almost all kinds of information such as texts, images, sounds, videos and animations. Because of the increasing number of types of information to be transmitted, especially when multiple messages need to be transmitted at the same time, new demands are placed on the data transmission technology of computer networks. As the network bandwidth continues to grow, so does network multimedia technology, including compression coding of data and network technologies for publishing media. With the completion of broadband network system and send