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电视在人们日常生活中占有不可缺少的重要地位，它给人们的生活面貌带来改观，电视本身也由小屏幕逐步向大屏幕多频道方向发展，使人们能够有选择地收看自己所喜爱的节目。但就目前电视传送的方式来看，还属于分配式，电视节目的播放是由电视台控制的，用户只能被动选择电视台?
Television plays an indispensable and important role in people’s daily life. It has brought about a change in people’s life. The television itself has gradually shifted from a small screen to a large-screen multi-channel television so that people can selectively watch their favorite programs . However, in terms of the current mode of television transmission, it also belongs to the distributed type. The broadcasting of television programs is controlled by the television station. Only the passive television stations can be selected by the users.