数字视频广播系统中传输流的处理由复用器完成。

Transport stream is generated by multiplexer in digital video broadcasting systems.

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国内很多城市已经选择欧洲的地面数字视频广播标准系统进行了试播。

Many cities in China have started to trial-broadcast adopting the systems according with the European Digital Video Broadcasting-Terrestrial standard.

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由于充分利用了成熟的数字视频广播技术，此分级授权收视系统安全性很高，系统构建简单，且成本比较适中。

Owing to the use of fully mature digital video broadcast technology, the scheme has high security, simple framework, and low cost.

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