METHOD OF COMPRESSING BIT INDEX OF DATA

摘要

PURPOSE: A data bit index compressing method is provided to store a large amount of information with a small amount of data by compressing byte data without data transformation. CONSTITUTION: The used number of byte data is obtained from one file. The obtained byte data are arrayed in the descending order based upon frequently used values. An index is established based upon the arrayed values. The stop bit and the termination bit are obtained for bit compression. The data are read to know the sequences of the data in the index. A bit pattern is established for index expression by determining a certain ratio. The data are compressed in sequence into the form of sum of the index values and the data number by using the established bit pattern. The data are recorded into the file, and the file is closed at the end of file.