时钟同步和载波同步是接收机的关键问题，传统模拟解调可靠性、稳定性差，调试复杂。

Time synchronization and carrier synchronization are cruxes of receiver. The reliability and stability of traditional analog demodulation are bad, and adjustment is complex.

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根据某著名数字电视接收机厂商统计，在内核模块开发稳定后，80%以上的工作量就在GUI部分。

According to the statistics from the well known set-top-box design groups, after the development of the kernel module become stable, more than 80% of workload will spent in GUI.

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