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METHOD AND APPARATUS FOR ENCODING A DIGITAL SIGNAL SO THAT IT PRESENTS A LOW DIRECT CURRENT COMPONENT, AS WELL AS FOR DECODING IT
METHOD AND APPARATUS FOR ENCODING A DIGITAL SIGNAL SO THAT IT PRESENTS A LOW DIRECT CURRENT COMPONENT, AS WELL AS FOR DECODING IT
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机译:编码具有低直接电流分量的数字信号的方法和装置,以及对其进行解码的方法和装置
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摘要
A method and apparatus are provided for encoding an n-bit information word into an m-bit code word, n/=2 and mn, wherein the DC component of successive code words is minimized. The digital sum variation (DSV) of a plurality of preceding m-bit code words is used to determine which of, for example, two m-bit code words should be generated to represent the n-bit information word to be encoded. The m-bit code word whose disparity, when combined with the digital sum variation, reduces the digital sum variation towards zero is selected.
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