| 摘要 |
<p>Repetitive parts are sequentially detected from compressed data, and then it is determined whether a relatively coinciding position of the repetitive parts is repetition of a word at the position corresponding to a multiple of an instruction word length or a repetition of another byte. When the position is the repetition of the word, a word repetition code at least containing a value obtained by dividing the relatively coinciding position by the instruction word length and a value indicating the coinciding length is generated and output as compression data. When the position is the repetition of the byte, a byte repetition code at least containing a value indicating the relatively coinciding position and the value indicating the coinciding length is generated and output as compression data. At the same time, a switching code for switching over the word repetition code and the byte repetition code is generated and output as compression data.</p> |
