A data compression and decompression method and device

A data compression and decompression technology, applied in digital transmission systems, electrical components, and error prevention. , the effect of increasing the decompression rate and increasing the compression rate

Active Publication Date: 2017-06-06
NANTONG HANGDA ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the traditional LZ algorithm, a local global dictionary is required when decompressing. If the adjacent part of the data to be decompressed does not arrive due to delay or packet loss, the received data cannot be decompressed. Wait until all the data before it is decompressed before starting the decompression of this data. In essence, the decompression program cannot do any work during the time period of waiting for the lost data.
It can be seen that when packet loss occurs, the received data packets cannot be decompressed in time, which seriously affects the decompression speed of the decompression end, resulting in waste of system resources

Method used

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  • A data compression and decompression method and device
  • A data compression and decompression method and device
  • A data compression and decompression method and device

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Embodiment Construction

[0059] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0060] see figure 1 , the flow of a data compression method embodiment provided by the present invention may specifically include:

[0061] Step 101, receiving the first data packet to be compressed;

[0062] Step 102: Use the first reference dictionary to compress the first data packet to form a first compressed data packet, and the first reference dictionary corresponds to a predetermined interval between the first data packet and the first data packet. The first compressed data packet carries the data packet information co...

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Abstract

The embodiment of the invention discloses methods and devices for compressing and decompressing data. The method for compressing the data comprises the following steps of receiving a first data packet to be compressed; and compressing the first data packet by utilizing a first reference dictionary, so as to form a first compressed data packet, wherein spaced continuous data packets with preset length exist between the first reference dictionary and the first data packet before the first reference dictionary is corresponding to the first data packet, the first compressed data packet carries data packet information corresponding to the first reference dictionary. According to the methods and devices disclosed by the embodiment of the invention, the data compression efficiency and the data decompression efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of network data processing, in particular to a data compression and decompression method and device. Background technique [0002] With the development of computer and communication technology, Internet network has developed rapidly in the past ten years, but the problem of congestion is becoming more and more serious. In order to meet the requirements of large data transmission and high-performance computing in the grid, a more efficient transmission protocol is urgently needed. The existing TCP protocol cannot work efficiently in a network with high bandwidth and delay products, mainly because the traditional TCP packet loss retransmission, additive increase, multiplicative decrease and other mechanisms will cause serious performance problems, and the transmission rate in high-speed networks Very unstable, it is easy to cause a waste of bandwidth. For example, TCP uses packet loss as an indication of net...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06
Inventor 陈峥彭冲覃伟峰
Owner NANTONG HANGDA ELECTRONICS TECH
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