CODE CONVERSION SYSTEM, CODE CONVERSION APPARATUS, CODE CONVERSION METHOD AND CODE CONVERSION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a code conversion system that reduces processing time by minimizing a space to store conversion tables.SOLUTION: A code conversion apparatus 20A converts a first code of a first information amount for one piece of character information into a second code different in code system from the first code of the first or second information amount by reference to a basic multilingual plane conversion table 31a and a supplementary plane conversion table 32a. One conversion table 31a includes a structure of elements of values of the first information amount where the first and second codes of the first information amount correspond to each other, and the other conversion table 32a includes a structure of elements of values of a third information amount smaller than the second information amount where part of the elements correspond to a first intermediate code of the third information amount. If the reference to the conversion table 31a results in the area of the part of the elements, the code conversion apparatus 20A outputs the first intermediate code of the third information amount by reference to the conversion table 32a to generate the second code of the second information amount.