Writable two-dimensional bar code based on fault-tolerant mechanism and generating method thereof

Abstract

The invention discloses a writable two-dimensional bar code based on a fault-tolerant mechanism and a generating method thereof. According to the writable two-dimensional bar code, a writable geometrical layer is overlaid on the center of the code word of the two-dimensional bar code to serve as a selection switch, black cells and white cells in the geometrical layer represent 1 and 0 respectively, and the number of cells occupied by the writable geometrical layer is not larger than the error correction capacity r of each data block of the two-dimensional code in the corresponding version; the fault-tolerant mechanism of the two-dimensional bar code is fully utilized, and separation and output of the code word content of the two-dimensional bar code can be achieved through control by writing information into the additionally arranged writable geometrical pattern.

Description

technical field [0001] The invention relates to the technical field of two-dimensional codes, and more particularly, to a writable two-dimensional barcode based on a fault tolerance mechanism and a method for generating the same. Background technique [0002] Two-dimensional barcode (2D Barcode) was first invented in Japan. On the basis of one-dimensional barcode, two-dimensional barcode cleverly uses the concept of "0" and "1" bit streams that constitute the internal logic basis of the computer to form the black barcode. [0003] (1) White (0) patterns are regularly arranged on a two-dimensional plane, expressing various information in a sequence of 0 and 1, including numbers, English letters, Chinese characters, pictures and even sounds. From then on, various information can be read by mobile devices through automatic reading by image input devices or photoelectric scanning devices to realize automatic processing of information. In addition, the two-dimensional barcode ha...

AI Technical Summary

Problems solved by technology

As far as the function of the two-dimensional barcode is concerned, it is static information. Once the information is formed, it cannot be changed.

In a circulation chain, people at different nodes need to read stage information. If you want to use traditional two-dimensional barcode storage, you need to continuously generate a large number of two-dimensional codes, which is relatively low for circulation efficiency and resource utilization.

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