DATA COMPRESSION DEVICE, DATA COMPRESSION METHOD, DATA COMPRESSION PROGRAM, AND COMPRESSED DATA COMMUNICATION SYSTEM

摘要

The conventional data compression device lowers the compression ratio by using a code having an inappropriate length without considering the data variety. Disclosed is a data compression device including: a code length storage means which stores respective code lengths which increase at least once without being decreased as the number of fields is increased; and an allocation means which inputs the number of fields (N: more than 1), acquires a code length corresponding to the number of fields (n) not greater than N from the code length storage means, and outputs the code of the code length.