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Compression method, decompression method, compression unit, decompression unit and compressed document

A compression method and decompression technology, applied in the field of compressed documents, can solve the problems of large data volume and achieve the effect of improving the compression rate

Inactive Publication Date: 2015-07-08
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Structured documents have the following disadvantages: The data required for storage or transmission is large

Method used

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  • Compression method, decompression method, compression unit, decompression unit and compressed document
  • Compression method, decompression method, compression unit, decompression unit and compressed document
  • Compression method, decompression method, compression unit, decompression unit and compressed document

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Experimental program
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Embodiment Construction

[0057] The invention is explained in detail with the aid of a first exemplary embodiment. A date can be defined as follows with the help of the regular expression RA[1]:

[0058] [0-9]{2, 2}[.][0-9]{2, 2}[.][0-9]{4, 4}

[0059] Table 1: Date definitions as regular expressions.

[0060] Therefore, the date string generated by the above regular expression is, for example, "23.03.2009".

[0061] A structured document DOC [2] has one or more information elements ELE, ATT. XML [3] standardized by W3C is the most famous representative of the definition of structured documents. In XML, information units are formed by elements and attributes. The structure of the structured document is predetermined by the structure rule SYN, which determines the type TYP in addition to the syntax. In XML, the structural rules are called, for example, schemas or DTDs (DTD—Document Type Definition: Document Type Definition). An information unit is generated by instantiation of a type. Structural...

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Abstract

A structured document having at least one informational unit with at least one character is divided, according to a first base type, into sections of a second base type. The sections are compressed according to specified compression instructions for the second base type to achieve an increased rate of compression. The informational elements may be expressed in an XML language. The compression method and corresponding compression unit, decompression method and decompression unit can be applied in the area of initialization of end devices, such as in systems engineering or in the IT consumer industry.

Description

technical field [0001] The invention relates to compression and decompression of structured documents, in particular a compression method, a decompression method, a compression unit and a decompression unit and compressed documents, eg in binary form. Background technique [0002] For many years, information has been represented with the help of structured documents. A generally known standard for representing structured documents is XML (XML-eXtensible Markup Language: Extensible Markup Language) of the W3C (W3C-World Wide Web Consortium: World Wide Web Consortium). Use this to prepare information across many applications and devices. For example, configuration data for initializing an end device (eg a mobile phone or a device component) can be provided by means of a structured document. Another example is the use of structured documents for describing multimedia content, as it is used for example in the standard SVG (SVG—Scalable Vector Graphic: Scalable Vector Graphic)....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/30
CPCH03M7/30
Inventor J.霍伊尔T.库尔茨D.佩因特纳
Owner SIEMENS AG