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数字电视是电视数字化和网络化后的产物。数字电视是一个系统,是指从电视节目采集、制作、编辑、播出、传输、用户端接收、显示等全过程的数字化,换句话说就是系统所有过程信号全是由0、1组成的数字流。是3C融合的一个典范,是计算机、传输平台、消费电子三个环节的聚焦点。随着数字电视技术的发展和电视节目数字传输的商业化,模拟电视逐步转向数字电视。能否改造现有设备用于传送数字电视,以提高电视节目传送质量和频带资源利用率,是一个值得我们探讨的课题。
Digital television is the product of television digitization and networking. Digital television is a system that refers to the digitization of the entire process of collecting, producing, editing, broadcasting, transmitting, receiving, displaying and so on the television programs in other words, in other words, the number of all process signals in the system is composed of 0 and 1 flow. Is a model of 3C integration, is the focus of the three links of the computer, transmission platform, consumer electronics. With the development of digital television technology and the commercialization of digital transmission of television programs, analog television has gradually shifted to digital television. Whether we can transform existing equipment for transmitting digital television to improve the quality of television program delivery and the utilization of band resources is a topic that deserves our discussion.