发明名称 |
DIGITAL-TO-ANALOG CONVERTER |
摘要 |
<p>In a digital-to-analog converter for bipolar signals all the bits change when the signals pass through the zero level. This results in a poor signal-to-noise ratio owing the small signal and the large noise contribution by the switching transients. The invention proposes to add a digital number to or subtract it from the digital input signal as an offset. As a result of this, the switching point is shifted towards a higher amplitude, which improves the signal-to-noise ratio and the distortion in the case of digital audio signals.</p> |
申请公布号 |
JPS57193122(A) |
申请公布日期 |
1982.11.27 |
申请号 |
JP19820075936 |
申请日期 |
1982.05.06 |
申请人 |
PHILIPS' GLOEILAMPENFABRIEKEN NV |
发明人 |
RUDEI YOHAN FUAN DE PURATSUSHIE;AIZE KARERU DEIIKUMANSU |
分类号 |
H03M1/80;H03M1/00 |
主分类号 |
H03M1/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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