Chinese data compression method and Chinese data decompression method and related devices

Abstract

The invention discloses a Chinese data compression and a Chinese data decompression method and related devices. The Chinese data compression method comprises the following steps: in the step A, reading Chinese data to be compressed; in the step B, carrying out word segmenting on the Chinese data to obtain a word set composing the Chinese data; in the step C, reading a word from the word set, if the word consists of more than two Chinese characters, searching the word in a preset word code library, if the word is searched, acquiring a code of the word from the word code library and storing the code into compression data, wherein the code at most occupies two bytes of storage space in the compression data; and repeating the step C until all the word in the word set are processed. The Chinese data compression technology provided by the invention can realize great compression of the Chinese data. The decompression method for the Chinese compression data, which is provided by the invention, can realize rapid decompression of the compression data.

Description

technical field [0001] The invention relates to the technical field of data compression, in particular to a Chinese data compression and decompression method and related equipment. Background technique [0002] The information age has brought about an "information explosion". The surge in data volume requires effective data compression for transmission or storage. Especially with the widespread application of embedded terminals such as PDAs, mobile phones, and navigators, due to the relatively low hardware conditions of these terminals, they cannot meet the storage requirements of massive data. Therefore, the demand for compressing and storing massive data is more urgent and urgent. strict. [0003] Since Shannon proposed information entropy theory and a simple encoding method - Shannon encoding in 1948, data compression technology has experienced a rapid development stage. Existing data compression techniques are mainly divided into two categories: lossy compression techn...

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Problems solved by technology

After analyzing, experimenting and comparing various lossless compression techniques, the inventors found that although the above-mentioned lossless compression techniques all have the ability to compress Chinese data, they are not suitable for use in environments with small storage space capacity and relatively low hardware performance indicators ( For example, in embedded devices), the existing lossless compression technologies all have the defect that the compression rate is not high enough to greatly compress Chinese data

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