逐行扫描，杜比数码，杜比专业逻辑，和DTS解码。
Progressive Scan, Dolby Digital, Dolby Pro Logic, and DTS decoding.
此方案完全采用逻辑异或运算，因此编码和解码速度快。
The logical exclusion OR operation are fully applied to the scheme so coding and decoding speed is quick.
在逻辑设计中，使用了自顶向下的设计方法，正确实现了编码和解码的功能。
The top-down design method is adopted in the logic design process. And the function of the coder and the decoder has been proved to be correct.
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