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Abstract

A nibble inversion and block inversion code coding and decoding method and a coding and decoding apparatus for the same. The apparatus includes a disparity calculator for receiving a pre-code in which a nibble-inverted indication (NII) bit is added at the position next to the LSB of a source data of a n-bit (n represents an odd number higher than 3), computing a disparity Dpc value of the pre-code, computing a disparity value Dni of the odd bit nibble-inverted pre-code, decoding a code type in accordance with the value of the register and the value of the running digital sum RDS which represent the disparity code and outputting a control signal for manipulating the bits of the pre-code; a RDS calculator for outputting a RDS value which is obtained by accumulatively summing the disparity of the calculated code word by the unit of blocks for selecting a code word or a complement code word when the computed disparity Dpc is not 0; and a bit manipulator for selecting a nibble-inverted and block-inverted (NIBI) code type in accordance with a control signal from the disparity calculator, manipulating a bit of the inputted pre-code and generating a code word or a complement code word, for thereby providing a transition and a DC spectrum component of 0, using a 1-bit redundancy bit when a predetermined n-bit (n represents odd number) is coded, providing multiple frame patterns, and fully providing an in-band and out-band signal.

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