发明名称 Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal
摘要 <p>A method and apparatus for improving an S/N ratio in a digital-to-analog conversion of a PDM signal arc provided. A digital-to-analog conversion system comprises an S/N ratio improving section. The S/N ratio improving section has a signal component extractor which extracts a signal component included in the PDM signal, and outputs a digitally filtered output signal. The digitally filtered output signal has a second full scale smaller than a first full scale of the PDM signal. The S/N ratio improving section also comprises a full-scale matching unit which matches the second full scale of the digitally filtered output signal with a third full scale of digital-to-analog conversion. &lt;IMAGE&gt;</p>
申请公布号 EP1168631(A2) 申请公布日期 2002.01.02
申请号 EP20010114242 申请日期 2001.06.12
申请人 BURR-BROWN JAPAN, LTD. 发明人 SHIGETOSHI, NAKAO;TOSHIHIKO, HAMASAKI
分类号 G11B20/10;G11B20/14;H03M3/02;(IPC1-7):H03M3/02 主分类号 G11B20/10
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