Data compression/decompression method,and compression/decompression program

Repetitive portions are sequentially detected in compression target data, and it is determined whether the approximately corresponding position of each repetitive portion is under a word-repetition condition, which is a position corresponding to a multiple of a length of an instruction word, or whet...

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Bibliographic Details
Main Author NORIKO ITANI
Format Patent
LanguageEnglish
Published 12.09.2012
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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Summary:Repetitive portions are sequentially detected in compression target data, and it is determined whether the approximately corresponding position of each repetitive portion is under a word-repetition condition, which is a position corresponding to a multiple of a length of an instruction word, or whether the position is under a byte-repetition condition. When it is under a word-repetition condition, a word-repetition code including at least a value obtained by dividing an approximately corresponding position by an instruction word length and a value specifying a length of a corresponding portion is generated and output as compressed data. When it is a byte-repetition condition, a byte-repetition code including at least a value specifying an approximately corresponding position and a value specifying a length of a corresponding portion is generated and output as compressed data.
Bibliography:Application Number: GB20100012425