地面数字电视应用

摘要

To improve the signal quality of digital TV, a new system was designed using digital MUDS transmission style, which has features such as low cost in building network, simplicity in encryption. Instead of traditional DVB-C, the DVB-T signal can realize dual-way mutual service such as graphs, data and video-on-demand, which is a new increment service. After several relay, it still remains high-quality image effect.%为了提高数字电视信号质量,系统采用数字MUDS(U段多路分配系统)传输方式,打破了地域界线,解决了边远山区老百姓看电视难的问题,具有建网成本低,易于加密,确保了系统的安全性等特点.采用DVB-T取代传统DVB-C信号,达到了实现图文、数据、点播等双向交互式服务,带来新的增值业务,并使得多次中继后,仍能保持高质量的图像效果的目的.