Data compression method and data transmission method based thereon, terminal device and system
A terminal device and data compression technology, applied in the field of data processing, can solve problems such as limited data compression rate and low hit rate of dictionary data query
Active Publication Date: 2021-03-09
HONOR DEVICE CO LTD
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Problems solved by technology
The existing dictionary encoding technology uses the query content of the information source itself as the source of dictionary data, which can meet the general compression scenarios, but because the query hit rate of dictionary data is not high, the compression rate of data is limited
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[0067] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0068] figure 2 A schematic diagram showing a software upgrade system 200 according to the data compression scheme of the embodiment of the present application. Such as figure 1 As shown in , the software upgrade system 200 includes a server device 21 and a terminal device 22 . In the case that the software (such as APP) in the terminal device 22 is to be upgraded through the installation package of the new version of the software, in the server end device 21, the difference data is obtained based on the installation package of the new version and the installation package of the old version , use the differential data as the first data block to be compressed, and use the old version installation package as the second data block. Using the data of the first data block itself and the second data block as a dictionary, t...
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An embodiment of the present application provides a data compression method and a data transmission method, terminal, and system based thereon. The data compression method includes: determining whether the first minimum compressible unit currently encoded in the first data block is before Including the first minimum compressible unit; in the case where it is determined that the first minimum compressible unit in the first data block is not included before the first minimum compressible unit currently encoded therein, determining that the first minimum compressible unit Whether the first minimum compressible unit is included in the second data block; if it is determined that the first minimum compressible unit is included in the second data block, use the first encoding as the second encoding with the current encoding An encoding corresponding to a minimum compressible unit, wherein the first encoding is outer encoding, and the outer encoding includes position information of the corresponding smallest compressible unit in the second data block. Through the data compression method, the data compression rate is improved, and the user experience is improved.
Description
technical field [0001] The present application relates to the technical field of data processing, and in particular to a data compression method and a data transmission method based thereon, a terminal device and a system. Background technique [0002] Currently existing compression algorithms for compressing data are classified into lossy compression and lossless compression. The content of lossy compressed data cannot be guaranteed to be the same as the original file after decompression, so it is generally used in specific fields. Although the data is lost, it does not affect the use, and it is mostly used in multimedia fields such as audio and video. Lossless compression requires that after the compressed data is decompressed, it must be the same as the original data, and all fields are available, but the compression rate is not as high as lossy compression. Lossless compression mainly uses dictionary coding and entropy coding techniques. Currently in compression softwa...
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IPC IPC(8): H04L29/06G06F8/71G06F8/65
CPCH04L69/04G06F8/71G06F8/65H04L67/34G06F8/658
Inventor 张皓然
Owner HONOR DEVICE CO LTD