Data compressing and uncompressing method, data compressing and uncompressing device and data compressing and uncompressing system

Abstract

Disclosed are a method, device and system for data compression and decompression. Taking the implementation of a method embodiment as an example, it comprises: acquiring frames of original data S and compression encoding rules; carrying out compression encoding on the frames of the original data S according to the compression encoding rules so as to obtain a first layer encoding error E1 and a first layer encoding C1; carrying out compression encoding on E1 according to the compression encoding rules so as to obtain a second layer encoding C2; and packaging C2 and C1 so as to obtain an encoded frame after compression. Layered compression is achieved, being suitable for the compression of multimedia source signals and also suitable for the compression of ordinary data; this compression method can improve the transmission efficiency of communication signals and data and improve the channel utilization rate when applied in data transmission, and can improve the storage efficiency of communication signals and data and the utilization rate of the storage device when applied to data storage.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to data compression and decompression methods, devices and systems. Background technique [0002] With the great growth of demand including data services and multimedia communication services, the amount of data transmitted through communication systems and communication networks is constantly increasing. The resource-limited and expensive communication channels can no longer meet this increasing transmission demand. Therefore, it is necessary to study compression coding methods to reduce the data carried by the channel. [0003] The following will describe the source compression algorithm: [0004] like figure 1 Shown is the schematic diagram of the sampled data encoder. The subset separator of the encoder decomposes the input raw data of one frame into the first and second two subsets; the estimator uses the first subset data to estimate the second subset data, and then...

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Problems solved by technology

[0006] Multimedia source signals (such as voice, audio, image, and video signals) can be compressed and encoded using mature source coding algorithms before they are sent to the channel; however, between communication terminals, various parts or components within the communication system 1. The data between the chips in the board or between the logic units in the chip is mostly general data (non-periodic signals and random signals are called general signals). These data do not have the relevant characteristics of multimedia information sources, and general information cannot be used The source compression algorithm compresses it; since it can only compress the source signal, the applicability is narrow

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