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Lossless stored data compression method and device

A lossless compression and memory data technology, applied in the direction of selective content distribution, digital video signal modification, electrical components, etc., can solve the problems of time and system resource waste, and achieve the effect of reducing time and system resource waste and rational allocation

Active Publication Date: 2014-10-29
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiments of the present invention can solve or partially solve the problem of waste of time and system resources caused by the existing single compression method in the process of compressing memory data

Method used

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  • Lossless stored data compression method and device

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Embodiment 1

[0032] refer to figure 1 The flow chart shown is described in detail through specific steps below:

[0033] S101, analyzing the type of data stored in the memory.

[0034] In this embodiment, the types of data stored in the memory include at least two of the following: text, binary machine language, uncompressed images or videos, uncompressed audio, compressed images or videos, and compressed audio.

[0035] In a specific implementation, the type of data stored in the memory may be determined according to the type of process using the memory. For example: when the process type is a web page browsing and document processing process, it is determined that the type of stored data in the memory used by the process is text; when the process type is a video recording, playback and game process, it is determined that the process uses The type of the stored data in the memory is image or video; when the process type is an audio recording and playing process, it is determined that th...

Embodiment 2

[0049] The inventors found that the data stored in the memory may be of various types, for example: text, binary machine language, uncompressed image or video, uncompressed audio, compressed image or video, and compressed audio. The inventor adopts a memory data lossless compression device, and adopts a lossless compression method capable of effectively compressing different types of data. refer to figure 2 , the memory data lossless compression device provided in this embodiment includes: an analysis unit 201, a selection unit 202, and a compression unit 203, wherein:

[0050] Analysis unit 201, configured to analyze the type of data stored in the memory;

[0051] The selection unit 202 is configured to select a data compression method capable of compressing the type of data according to the type of data stored in the internal memory analyzed by the analysis unit 201;

[0052] The compression unit 203 is configured to use the data compression method selected by the selecti...

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Abstract

The invention provides a lossless stored data compression method and device. The method comprises the following steps: according to the type of stored data in a memory obtained through analysis, selecting a data compression method capable of compressing the type of data; and carrying out lossless compression processing on the type of the stored data in the memory by utilizing the selected data compression method. With the above method and device, stored data compression time and waste of system resources can be reduced.

Description

technical field [0001] The invention relates to the technical field of memory compression, in particular to a lossless compression method and device for memory data. Background technique [0002] When a computer or mobile computing device is running, the operating system often encounters a situation where the free memory is insufficient and the computing speed is affected. There are currently two solutions to this problem. The first is to use peripheral storage devices such as hard disks as virtual memory, move part of the stored data in the used memory into virtual memory and release this part of memory, so as to obtain more vacant memory. The second is to use a common lossless compression method to losslessly compress part of the stored data in the used memory, so as to obtain more free memory. For example, the Android operating system always uses the LZO (Lempel-Ziv-Oberhumer) method to perform lossless compression on memory data. LZO is a data compression algorithm de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/13H04N21/433
Inventor 徐晶明吴晟蒋斌李慧文林福辉黄瑜智
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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