本文方法具有较高的压缩效率，而且信噪比可调，能够满足传输码流在任意码流截断处解码的要求。

The method has high compression effiency and adjustable image snr . The bit-stream could be decoded at any bit.

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论述数字电视系统的关键技术，对传输码流参数进行分析，提出码流分析仪在有线数字电视系统中的应用方法。

The paper discusses key technologies of the digital television system, analyzes the TS parameters and clarifies the application methods of Transport Stream Analyzer in digital cable television system.

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