发明名称 |
Efficient data-directed scrambler for noise-shaping mixed-signal converters |
摘要 |
An efficient data-directed scrambler is provided for processing digital signals having an unequally-weighted code. The data-directed scrambler includes inputs for receiving unequally-weighted bits of an input signal, outputs for supplying N scrambled bits of an output signal, and two or more scrambler columns connected in series between the inputs and the outputs. One or more of the scrambler columns includes a swapper cell and a digital fanout. Least significant bits in the unequally-weighted code are input to a swapper cell, and higher order bits in the unequally-weighted code are input to respective digital fanouts. In the other embodiments, an efficient data-directed scrambler is provided for processing digital signals having an equally-weighted code.
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申请公布号 |
US2003197633(A1) |
申请公布日期 |
2003.10.23 |
申请号 |
US20020127903 |
申请日期 |
2002.04.23 |
申请人 |
ADAMS ROBERT W.;MAR DOUGLAS J.;YEUNG M.K. STEPHEN |
发明人 |
ADAMS ROBERT W.;MAR DOUGLAS J.;YEUNG M.K. STEPHEN |
分类号 |
H03M1/06;H03M1/74;(IPC1-7):H03M1/66 |
主分类号 |
H03M1/06 |
代理机构 |
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地址 |
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