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Reversible code compander

Image Number 5 for United States Patent #4030093.

A system for the condensation of a binary signal sequence and for the reproduction of the condensed signal sequence, in which the same encoding means is used both for the condensation and for the reproduction. In the reproduction mode of operation inverters are connected in series with the input and the output of the encoding means. The two inverters together with the encoding means act as a decoder because such a transformation function is selected for the encoding means at which the inverse transformation function is just the complementary function thereof.

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