down converter

基本解释

This paper introduces a numeral down converter control system.
本文介紹了一種數字式下變頻器的控制系統。
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.
模塊的硬件設計主要包括：A／D轉換器、數字下變頻器（DDC）以及DSP，詳盡討論了A／D 器件AD6640和DDC 器件AD6624的設計和應用；
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.
最後，基於FPGA對數字下變頻進行了設計及實現，具躰包括：算法倣真、VHDL描述、FPGA倣真和實際系統測試。

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