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Document compression system and method

A compression method and technology of compression system, applied in special data processing applications, instruments, electronic digital data processing, etc., can solve the problems of large document capacity, poor picture clarity, and inability to obtain good compression effects, and achieve small capacity. Effect

Inactive Publication Date: 2011-03-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) If the image compression algorithm is used, the text content in the document (including text and spaces, etc.) cannot obtain a good compression effect, so that the compressed document capacity is too large;
[0004] (2) If the text compression algorithm is used, although the document content in the document can obtain a good compression effect, the picture in the document will be forcibly converted into a binary picture (black and white picture), resulting in a change in the clarity of the picture in the document Difference

Method used

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  • Document compression system and method
  • Document compression system and method

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Embodiment Construction

[0013] like figure 1 Shown is a system architecture diagram of a preferred embodiment of the document compression system of the present invention. The document compression system 21 runs in the host computer 2, and the host computer 2 is connected with the display device 1, the document generation system 3 and the input device 4. The host 2 includes a storage body 20 and a central processing unit (Central Processing Unit, CPU) 23 .

[0014] Wherein, the document generation system 3 is used to generate a document to be compressed (such as a PDF document). The document generating system 3 can run on the host computer 2, or run on an external device. The storage body 20 may be a hard disk in the host computer 2 , and is used for storing the document materials 22 generated by the document generation system 3 . The central processing unit 23 is used to control the execution of the file compression system 21 .

[0015] The host computer 2 is connected with a display device 1 for...

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Abstract

The invention discloses a document compression method. The method comprises the following steps of: acquiring a document to be compressed from a memory stack; dividing the document into blocks of different types, wherein the types of the blocks comprise pictures and texts; judging the type of each block in the document in turn; if the type of one block is the picture, compressing the block according to a picture compression algorithm; if the type of one block is the text, compressing the block according to a text compression algorithm; and merging all compressed blocks together to generate a compressed document. By using the method, different compression algorithms can be selected for compression according to the types of the different blocks in the document to be compressed.

Description

technical field [0001] The invention relates to a data processing system and method, in particular to a file compression system and method. Background technique [0002] The traditional document compression method uses the same compression algorithm to compress the entire document. However, if the document to be compressed contains pictures, this compression method has the following two disadvantages: [0003] (1) If the image compression algorithm is used, the text content in the document (including text and spaces, etc.) cannot obtain a good compression effect, so that the compressed document capacity is too large; [0004] (2) If the text compression algorithm is used, although the document content in the document can obtain a good compression effect, the picture in the document will be forcibly converted into a binary picture (black and white picture), resulting in a change in the clarity of the picture in the document Difference. Contents of the invention [0005] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F17/30153G06F16/1744
Inventor 李忠一叶建发郑山川
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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