2D code system, and identification method

An identification method and two-dimensional code technology, applied in the field of two-dimensional code system and identification, can solve the problems of one-dimensional code without considering the error correction function, the occupation of long bar positioning graphics, and the reduction of bar code information capacity, so as to enhance the positioning resistance. Interference, simplicity of construction, the effect of reducing the possibility of contamination

Inactive Publication Date: 2007-12-26
BOGUTIANBO TECH
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Problems solved by technology

[0008] (2) Strong error correction capability: One-dimensional code does not consider error correction function
This positioning graphic feature is more obvious, which can improve the positioning and recognition speed to a certain extent, but the long bar positioning graphic occupies more barcode positions, which reduces the information capacit

Method used

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  • 2D code system, and identification method
  • 2D code system, and identification method
  • 2D code system, and identification method

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Embodiment Construction

[0051] The two-dimensional code system and its decoding process in the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments.

[0052] Figure 1 describes the code substructure of a two-dimensional code. In FIG. 1 , 1. a rectangular positioning figure; 2. a positioning interval area; 3. a data area; 4. a boundary area.

[0053] There are three parts in the graph: boundary area, positioning area and data area. Wherein the boundary area 4 is the light-colored area around the codeword. The positioning area is made up of four square positioning figures, and the positioning interval area 2 separates the positioning area from the data area 3, and the four square positioning figures are positioned at four apexes of the codeword rectangle, and the connection between the central points of the four square positioning figures The lines form exactly a regular quadrilateral.

[0054] The codeword size of the two-dimensional co...

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Abstract

A 2-D code system is prepared for forming code character by arranging square unit blocks, dividing code character region to positioning region and positioning space region as well as data region, using four the same dark-color square positioning patterns to from said positioning region, applying coding method with unique identification-direction to generate data in said data region and using light-color unit block as positioning space region being used to isolate four square positioning patterns from said data region.

Description

technical field [0001] The invention relates to the technical field of information storage, positioning and identification, in particular to an all-round readable two-dimensional code system and its identification method. Background technique [0002] Barcode, referred to as barcode for short, is an optical symbol with a special shape and a special arrangement. Currently common barcodes can be divided into one-dimensional barcodes and two-dimensional barcodes. [0003] One-dimensional barcodes (hereinafter referred to as one-dimensional codes) have been widely used and well known all over the world. One-dimensional codes only represent information in the horizontal direction, but do not represent any information in the vertical direction. Since its appearance in the 1970s, one-dimensional codes have developed very rapidly and have been widely used in various fields such as logistics warehousing, manufacturing, books and publications, postal services, transportation, and pr...

Claims

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Application Information

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IPC IPC(8): G06K19/06G06K9/80
Inventor 刘涛周欣
Owner BOGUTIANBO TECH
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