Patent
Method and apparatus for encoding a digital signal with a low DC component
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TLDR
In this paper, a method and apparatus for encoding an n-bit information word into an m-bit code word, n≧2 and m>n, wherein the DC component of successive code words is minimized.Abstract:
A method and apparatus are provided for encoding an n-bit information word into an m-bit code word, n≧2 and m>n, 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.read more
Citations
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References
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Patent
Low disparity binary codes
TL;DR: In this article, a method and apparatus for recoding a sequence of binary digits into a form having lower disparity for transmission and the transformation of the data back into its original form are described.
Patent
Multilevel code signal transmission system
TL;DR: In this paper, a binary code is converted into a multilevel code having an average value of zero over a period of time, and the integral of the transmitted n-digit codes is converged to zero level.
Patent
Data transmission terminal
TL;DR: In this paper, a code translator translates four digit binary code groups into three digit ternary code groups having either zero or positive disparity only and a lower digit rate thin the binary groups.
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Digital transmission channel monitoring system
TL;DR: In this article, the parity check signal is inserted directly into the multi-level code words by detecting if the algebraic sum of the levels of each code word is an even or odd number.
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