BIT LENGTH EXTENDING APPARATUS, DATA PROCESSING APPARATUS, BIT LENGTH EXTENDING METHOD, CONTROL PROGRAM AND READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To supplement data of low order (m-n) bit length with a less conversion error by an easy processing in extending digital data of n-bit length to data of m-bit length (m>n). SOLUTION: In performing bit extension for input data Dn of a bit length n into output data Dm of a bit length larger than n, a bit length extending apparatus 10 assigns high order (m-n) bit of the input data Dn to low order (m-n) bits of the output data requiring supplement, thereby generating the of m-bit output data Dm without performing complicated processing. COPYRIGHT: (C)2005,JPO&NCIPI