Method, device, apparatus and storage medium for decompressing lzw data

A storage medium and decompression technology, which is applied in the direction of electrical components, code conversion, etc., can solve the problem that the data decompression process can only be performed serially, and achieve the effect of increasing the processing rate

Inactive Publication Date: 2018-12-25
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a method, device, equipment and computer-readable storage medium for LZW data decompression, so as to solve the problem that the data decompression process can only be performed serially in the prior art

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  • Method, device, apparatus and storage medium for decompressing lzw data
  • Method, device, apparatus and storage medium for decompressing lzw data
  • Method, device, apparatus and storage medium for decompressing lzw data

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Embodiment Construction

[0039] The core of the present invention is to provide a method, device, equipment and computer-readable storage medium for LZW data decompression, which improves the processing rate of LZW data decompression.

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] Please refer to figure 2 , figure 2 The flow chart of the first specific embodiment of the method for LZW data decompression provided by the present invention; the specific operation steps a...

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Abstract

The invention discloses a method, an apparatus, a device and a computer-readable storage medium for decompressing LZW data. The method comprises the following steps: header data of LZW compressed datais read in advance to obtain the number N of data segments in the LZW compressed data and the offset positions of each data segment; judging whether the number N of the data segments is greater thanthe number M of the preset parallel processing units; if not, N parallel processing units are selected to decompress N data segments in parallel. The method, device, apparatus and computer readable storage medium provided by the invention improve the processing speed of LZW data decompression.

Description

technical field [0001] The present invention relates to the technical field of data decompression, in particular to a method, device, equipment and computer-readable storage medium for LZW data decompression. Background technique [0002] LZW (Ling List Compression) algorithm stores compressed data in a bit-by-bit storage format. In the LZW algorithm, the context determines the number of bits required to store the current data. For example, for data 5, the context may decide to use 3 bits to store it, and the stored bit value is 101 at this time; the context may also decide to use 4 bits to store it, and the stored bit value is 0101 at this time. The smallest storage unit of a current storage device is usually a byte (8 bits). Therefore, when data is stored, the bit data needs to be spliced ​​to form byte data for data storage. For example, the bit data to be stored for two adjacent data 4 and 5 are respectively 0100 and 0101, then these two bit data are spliced ​​into one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30
CPCH03M7/3084
Inventor 李龙赵健尹云峰
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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