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Buffer saving image decompressing storing method and module thereof

A storage module and decompression technology, applied in image communication, electrical components, code conversion, etc., to achieve the effect of saving memory

Inactive Publication Date: 2008-10-15
WUDI SCI & TECH (XIAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this requires at least a memory equivalent to the picture resolution or more than three times the memory (the picture data also includes three primary color signals (R, G, B)) to temporarily store this picture

Method used

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  • Buffer saving image decompressing storing method and module thereof
  • Buffer saving image decompressing storing method and module thereof
  • Buffer saving image decompressing storing method and module thereof

Examples

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Comparison scheme
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Embodiment Construction

[0026] First illustrate the main concept of the present invention: generally speaking, when JPEG (Joint PhotographicExperts Group; Joint Photographic Experts Group) picture decompression, be with an 8 * 8 block (Block) as the basis of each compression and decompression unit, and there is also a large block (MacroBlock; MB), which contains the basic picture blocks of the complete three primary colors. Among them, the pixels of the picture can be divided into three components, such as: brightness (Y) signal, blue color difference (Cb) signal and red color difference (Cr) signal, red primary color signal (R), green primary color signal (G) and Blue primary color signal (B), or...etc. Usually JPEG is three signals of Y, Cb, and Cr after decompression, and then when it is to be displayed on the screen, it is converted into three primary color signals of R, G, and B. Usually one MB includes four Y signal tiles, one Cb signal tile and one Cr signal tile.

[0027] The method of the ...

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Abstract

The invention discloses a picture decompression and storage method and a module thereof for saving scratch-pad memory, wherein, the picture decompression and storage method comprises the following steps: acquiring a picture block which has 'm' multiplying 'm' pixel dots and native resolution, calculating 'n' multiplying 'n' pixel dots to be reserved among the 'm' multiplying 'm' pixel dots according to compression resolution; quantifying the location of the 'n' multiplying 'n' pixel dots so as to acquire a group of color signals; converting the color signals into the color signals of the original picture and storing the color signals. As display resolution of the screen is smaller than the resolution of the original picture in certain condensed proportion, the whole JPEG picture block does not need to be conserved. The method of the invention and the picture storage module thereof can achieve the technical effect of saving the memory.

Description

technical field [0001] The present invention relates to a picture storage technology, in particular to a picture decompression storage method and its module that saves temporary storage memory, and the method and its module can be used to decompress JPEG (Joint Photographic Experts Group; Joint Photographic Experts Group) pictures store. Background technique [0002] In the past, due to technical limitations, the transmission and reproduction of information such as pictures, videos, sounds, etc. could only be handled in a similar manner. In recent years, due to the high development of digital technology, information processing has also been developed and moved towards digitalization. [0003] It is everyone's expectation to be able to play and browse pictures conveniently in various electronic devices at any time; however, image files in various formats obtained from the Internet or other image archive databases contain pictures such as background pictures, landscapes, etc....

Claims

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Application Information

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IPC IPC(8): H04N1/41H04N1/60H03M7/30
Inventor 杨凰琳陈淮琰
Owner WUDI SCI & TECH (XIAN) CO LTD
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