Data compression and decompression method, device and equipment

A data compression and decompression technology, applied in the computer field, can solve problems such as poor compression effect and achieve the effect of improving data compression rate

Active Publication Date: 2019-09-20
ADVANCED NEW TECH CO LTD
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  • Abstract
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Problems solved by technology

[0003] For the compression of long type, double type or float type data, the traditional method is to directly use variable length coding to compress, when the values ​​in the sequence are generally small , this method has good compression effect, but in the case of uneven distribution of values ​​in the sequence, the method compresses poorly

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  • Data compression and decompression method, device and equipment
  • Data compression and decompression method, device and equipment
  • Data compression and decompression method, device and equipment

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Embodiment Construction

[0038] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0039] In traditional long, double, or float data compression schemes, variable-length encoding is directly used for compression. This method is not uniform for the value distribution of long, double, or float data sequences. However, it will lead to negative optimization (when the value of long type, double type or float type data is relat...

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Abstract

The embodiment of the invention discloses a data compression and decompression method, a data compression and decompression device and data compression and decompression equipment. The data compression method comprises the steps that a first array is generated according to an original sequence, elements in the first array are different from one another, and all numerical values in the original sequence are contained; a second array is generated according to the original sequence, and elements in the second array are position indexes of the elements in the original sequence in the first array; the first array is encoded by adopting an encoding method based on numerical prediction to obtain a first encoding result; the second array is encoded by adopting a variable-length encoding method to obtain a second encoding result; and the first coding result and the second coding result are stored according to a preset mapping relation.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a data compression and decompression method, device and equipment. Background technique [0002] In scientific computing environments, it is often necessary to store large amounts of data on or between computers. The basic idea of ​​data compression technology is to replace the repeated data in the compressed data with symbols or codes that occupy less space, so that the compressed data occupies less disk storage control or shorter transmission time. [0003] For the compression of long type, double type or float type data, the traditional method is to directly use variable length coding for compression. When the values ​​in the sequence are generally small, this method has a better compression effect, but in the sequence This method compresses poorly when the distribution of values ​​is not uniform. In view of the complement of the existing technology, it is necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30H03M7/40
CPCH03M7/3071H03M7/4093
Inventor 唐德荣
Owner ADVANCED NEW TECH CO LTD
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