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根据国家政策《广播影视科技“十五”计划和2010年远景规划》明文提出:2010年全面实现数字广播电视,2015年停止模拟广播电视的播出。这对于拥有几十上百台电视机的企业将面临一个难题,即每台电视机要配一台机顶盒才能正常收看,企业不但要支付昂贵的收视费,增加经营成本,而且机顶盒众多、分散,不易于使用和管理。本系统能将原来数字电视信号转换为模拟电视信号,利用原来模拟射频线路传输,为有线电视网内的用户传送高质量节目,使用户操作简便,减少经营成本。该系统设计仅作学术研究,应用于有线电视、小区闭路电视、宾馆、酒店、安防监控、电化教学、广告信息发布系统中,须遵守国家的相关法律法规。
According to the national policy of Radio, Film and Television Science and Technology and Plan of 2010 and Vision 2010, it is stated explicitly that digital radio and television should be fully implemented in 2010 and broadcast of analog radio and television will cease in 2015. This will have tens of hundreds of hundreds of TV sets of enterprises will face a problem that each TV to be equipped with a set-top box to watch properly, companies not only have to pay expensive viewing fees, increase operating costs, but also many set-top boxes, decentralized, Not easy to use and manage. The system can convert the original digital TV signals into analog TV signals, using the original analog RF transmission lines to transmit high-quality programs for users in the cable television network, making the user easy to operate and reducing the operation cost. The system design is only for academic research, used in cable television, residential CCTV, hotels, hotels, security monitoring, teaching, advertising information dissemination system, to comply with relevant state laws and regulations.