| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a character code compression/decompression device and method for reducing a whole storage capacity. <P>SOLUTION: The character codes of characters whose use frequency is high are compression-converted, and the information of the separation of the character codes is generated, and the compression-conversion results and the separation information are connected by a data processor 2. A conversion table storing part 31 preliminarily stores character code information corresponding to each bit column of characters, and a storage device 3 stores the character codes converted by using the conversion table and the separation information indicating the separating positions of the conversion result. The character code compression device is configured to prepare the conversion table in which character codes are assigned to a smaller number of bits in the order of the appearance frequency of characters, and to assign the character codes to be frequently used to the short bits, and to reduce the whole storage capacity, and to increase the converting efficiency of the character codes. <P>COPYRIGHT: (C)2004,JPO |
