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→Polarity: link to related idea, "polarity switching" |
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* Pair each code word with the polarity-inverse of that code word. The receiver is designed so that either code word of the pair decodes to the same data bits. Examples include [[alternate mark inversion]], [[Differential Manchester encoding]], [[coded mark inversion]] and [[Miller encoding]].
* [[differential coding]] each symbol relative to the previous symbol. Examples include [[MLT-3 encoding]] and [[NRZI]].
* Invert the whole stream when inverted [[syncword]]s are detected, perhaps using [[ differential signalling#Polarity switching | polarity switching ]]
==Run-length limited codes==
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