Patent ID: 6111528
Filing Date: 2000-08-29
Classification: H03M

Abstract:
An encoding system for generating from an input data word an encoded data word, said input data word comprising a series of input data bytes and said encoded data word comprising a corresponding series of encoded data bytes, in accordance with a predetermined encoding methodology in which each encoded data byte is encoded in connection with the corresponding one of said input data bytes and an encoding control signal generated during encoding of a preceding input data byte in the series, the encoding control signal having at least two conditions, one of said conditions representative of a high disparity and a second of said conditions representative of a low disparity, the encoding system comprising a series of encoding sections each associated with a respective one of the input data bytes in the series, each encoding section including:A. a plurality of encoding circuits each associated with one of the possible conditions of the encoding control signal, each encoding circuit receiving the associated one of the input data bytes and a signal corresponding to the one of the possible conditions of the encoding control signal associated therewith and generating therefrom an output encoded byte and an associated encoding control signal; andB. a selection circuit for receiving the output encoded bytes and associated encoding control signals generated by the encoding circuits of its associated encoding section, the selection circuit selectively providing, as an encoded data byte and a selected encoding control signal for the encoding section, the output encoded byte and associated encoding control signal from the one of its associated encoding circuits corresponding to the condition of the selected encoding control signal from a preceding one of the encoding sections in the series.