Physical information system data lossless compression transmission method using DEFLATE algorithm

A technology of physical information and system data, which is applied in the field of lossless compression transmission of physical information system data, can solve the problems of slow data transmission speed and low transmission efficiency, and achieve the effect of improving data transmission speed and efficiency

Inactive Publication Date: 2017-06-13
JINAN INSPUR HIGH TECH TECH DEV CO LTD
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  • Description
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Problems solved by technology

[0004] Under the existing technology, due to the large amount of data transmission in the physical information system, the current transmission method results in slow data transmission speed and low transmission efficiency

Method used

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  • Physical information system data lossless compression transmission method using DEFLATE algorithm

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Embodiment 1

[0020] (1) In the physical information system, there will be many types of data transmission, among which the digital system is mainly the original uncompressed binary data stream.

[0021] (2) For the binary data stream, according to the size of the network packet or the requirements of the transmission unit, it is divided into 64KByte block size.

[0022] (3) For each block, find all the symbols that appear in it, or repeat the sequence of symbols to form a set of symbols that may appear.

[0023] (4) Find a new binary representation for each symbol such that common symbols use few bits and uncommon symbols use more bits. The specific process is:

[0024] i. Read 64KB of content from the data stream to be compressed into a buffer, and use a strstart variable to move backwards from 0 in the buffer array. At each position, in the area before it, strstart looks for a string that matches the first 3 bytes of the string started by the current strstart, and tries to find the lon...

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Abstract

The invention relates to the technical field of data transmission in a computer physical information system, and in particular to a physical information system data lossless compression transmission method using a DEFLATE algorithm. A data flow has a large possibility of occurring repetitions when data is transmission in a physical information system. When one repetition occurs, such repetition has locality, that is, if one character string needs to repeat, the character string repeats nearby and cannot be found at any far place, so that a sliding window is to be set; and if the sliding window is 32 KB, such 32 KB is searched in former 32 KB data, and such 32 KB slides forwards along with continuous moving of the code. The physical information system data lossless compression transmission method using the DEFLATE algorithm is provided, which can improve data transmission speed and efficiency by aiming at a problem that the physical information system has a large amount of data to be transmitted.

Description

technical field [0001] The invention relates to the technical field of data transmission in computer physical information systems, in particular to a lossless compression transmission method for physical information system data using DEFLATE algorithm. Background technique [0002] As the unity of computing process and physical process, physical information system is a next-generation intelligent system integrating computing, communication and control. Cyber-physical systems interact with physical processes through human-computer interaction interfaces, and use cyberspace to manipulate a physical entity in a remote, reliable, real-time, secure, and collaborative manner. The physical information system includes system engineering such as environmental perception, embedded computing, network communication and network control that will be ubiquitous in the future, so that the physical system has the functions of computing, communication, precise control, remote collaboration an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/08
CPCH04L1/0002H04L67/5651H04L67/568
Inventor 王俊杰戴鸿君于治楼
Owner JINAN INSPUR HIGH TECH TECH DEV CO LTD
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