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本文首先阐述了CCIR、欧广联及日本等有关研究部门对广播电视收费方式的研究开发动向。其次介绍了卫星广播收费方式的技术标准和具体应用实例。最后说明了几种扰频方式的比较和密钥管理系统的组成。
This article first describes the CCIR, the European Union and Japan and other research departments on the radio and television charging methods of research and development trends. Followed by the introduction of satellite radio charging method of technical standards and specific application examples. Finally, it shows the comparison of several scrambling methods and the composition of the key management system.