down converter

基本解释

This paper introduces a numeral down converter control system.
本文介绍了一种数字式下变频器的控制系统。
The design of hardware module includes A/D converter, DDC (Digital Down Converter) and DSP. The design and application of AD6640 and AD6624 are fully discussed in this part.
模块的硬件设计主要包括：A／D转换器、数字下变频器（DDC）以及DSP，详尽讨论了A／D 器件AD6640和DDC 器件AD6624的设计和应用；
At last, this thesis realizes digital down converter based on FPGA, and the whole designing process includes algorithm simulation, VHDL description, FPGA simulation and real system test.
最后，基于FPGA对数字下变频进行了设计及实现，具体包括：算法仿真、VHDL描述、FPGA仿真和实际系统测试。

And it can also convert video in HD format into the two lower-quality formats with its "down converter" function.
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