File compression and decompression method and device

Abstract

The invention provides a file compression method. The file compression method comprises the steps of obtaining a to-be-compressed binary file; determining at least one specified position; and generating a compressed file based on residual data of the binary file, wherein the residual data comprises bits, except the at least one specified position, in each byte of the binary file. The invention furthermore provides the file decompression method which comprises the steps of obtaining a compressed file of a to-be-decompressed binary file; obtaining auxiliary information of the compressed file; and recovering and generating the binary file based on the auxiliary information and the remaining data in the compressed file. The binary file comprises residual data in the compressed file and bits supplemented in the residual data according to the auxiliary information. The invention further provides a file compression device, a file decompression device, computer equipment and a computer readable medium.

Description

technical field [0001] The present disclosure relates to the field of computer technology, and more specifically, to a file compression method and device and a file decompression method and device. Background technique [0002] The essence of the Internet is the exchange of information, and files are the carrier of information. With the increase in the amount of information, files are also showing a trend of becoming larger and larger. File compression can effectively reduce the storage space occupied by files, whether it is applied to local storage of files or network transmission, the same information, using smaller file storage space, can make information storage or transmission more efficient Therefore, a better file compression algorithm can bring huge economic and social value. [0003] In the process of realizing the concept of the present disclosure, the inventors found at least the following problems in the prior art: most of the existing compression technologies a...

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Problems solved by technology

[0003] In the process of realizing the concept of the present disclosure, the inventors found at least the following problems in the prior art: most of the existing compression technologies are based on the upper file format for compression, that is, only files of a specific format can be compressed, such as video compression The algorithm can only compress video files, the image compression algorithm can only compress image files, and the text compression algorithm can only compress text files, etc.; and due to the limitation of file format, different compression technologies cannot be superimposed and used, and further Raise the compression ratio

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