数字电视传播特征及其远程教育应用

Characteristics of Digital TV Communication and Applications in Distance Education

数字电视充分发挥传统电视和互联网络的传播优势,除了图像的高清晰优点外,其传播的交互性、资源的共享性、受众的主动性以及时空的选择性等特点更决定了数字电视在远程教育中的突出地位。利用数字直播、视频点播、准视频点播以及时移等一系列数字技术,借助HFC双向光纤通讯网络,数字电视在远程教育中的远程教学、互动参与、智能管理等方面有着广泛的应用空间。

Digital TV gives full play to the traditional television and the Internet, the spread of benefits, in addition to advantages of high-definition images, The interactive nature of its communication, resource sharing nature of the audience’s initiative, as well as the selectivity of spatial and temporal characteristics to the decision to the digital television in distance education in a prominent position. The use of digital broadcast, Video-on-demand, Near Video-on-demand, as well as time-lapse series of digital technology, the use of HFC bi-directional fiber-optic communications networks, digital television in distance education distance learning, interactive participation, intelligent management and so has a wide range of applications space.