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国家广电总局在《广播影视科技“十五”计划和2010年远景规划》中对我国广播电视的数字化提出了明确的时间表。电视单位全面数字化的第一个结果是加强广播电视与通信、计算机业务的一体化。第二个特点是信息来源的多样化和分散化。第三个影响是数字电视业务的可分级性带来的各种业务的统一性。可以在同一通道实现不同清晰度(标清、高清)业务以满足各种业务的需要。对于一些中小电视台,特别是欠发达地区的中小电视台没有充足资金,数字化改造不可能一步到
SARFT set forth a clear timetable for the digitization of China’s radio and television in the “Radio, Film and Television Science and Technology” and “2010 Vision”. The first result of the comprehensive digitization of television units is to strengthen the integration of radio and television broadcasting and communications and computer services. The second characteristic is the diversification and decentralization of sources of information. The third impact is the uniformity of the various services that result from the scalability of digital television services. Different definition (SD, HD) services can be implemented on the same channel to meet the needs of various businesses. For some small and medium-sized television stations, especially small and medium-sized television stations in less developed regions do not have sufficient funds, digital transformation can not be one step