Code converter for coding and decoding digital data

摘要

A code converter of the present invention converts m data bits to n channel bits (m<n) and records the n channel bits in a recording medium. The code converter includes a basic table made up of a plurality of tables smaller in number than 2m defined on the basis of a bit pattern required of the codes. A converting circuit codes all data of the m data bits to the n channel bits by calculation using the basic table. The code converter is operable with a minimum number of tables and therefore with a minimum of circuit scale.