Low-density high-coding-capcity lattice two-dimensional code integrated with chaos encryption technology

Abstract

A brand new lattice two-dimensional code solves the problems of limited coding capacity and poor safety anti-counterfeiting property of an existing two-dimensional code. The brand new lattice two-dimensional code is formed by splicing a plurality of different code graphs corresponding to the same code; each code graph is formed by distributing adjustable solid round points or square points with the same size on rectangular arrays of which the spacing is adjustable and which are arranged at an equal interval; each code graph consists of a location zone 1, key zones 2.1 and 2.2, and a data zone 3 containing a single-place CRC check code zone 3.1; the positions of black points in the data zone respectively represent all places of a code expressed by a decimal number and numbers in the range of 0 to 9 in the check code; an original data zone array image is scrambled by scramble transformation; a number of corresponding scramble times is a password; and a plurality of previous scramble arrays with the highest scramble degrees are used as final data zone arrays of the code graphs. The two-dimensional code solves the contradiction between high coding capacity and high point density, has high capacity and good concealment, is easy in expansion and strong in safety anti-counterfeiting property, and is especially suitable in the field of logistic monitoring, product source tracing, audio books and the like.

Description

technical field [0001] The present invention is related to dot-matrix two-dimensional codes, in particular to the structure, coding rules and generation method of matrix two-dimensional codes. technical background [0002] The invention relates to a matrix two-dimensional code with a brand new structure and its encoding and decoding methods. [0003] Matrix two-dimensional code is a kind of two-dimensional code, which refers to a code in which information is recorded by distributing black and white elements at different positions in the matrix in a rectangular space. In the corresponding element position of the matrix, the binary "1" or "0" is represented by the presence or absence of square dots, round dots or other shapes of dots, so that the encoding information represented by the matrix two-dimensional code is determined by the arrangement and combination of dots . According to different structures and coding mechanisms, there are many types of matrix two-dimensional c...

AI Technical Summary

Problems solved by technology

However, the current micro-dot QR codes generally have disadvantages such as low coding capacity, poor security and anti-counterfeiting, low concealment, and high application cost.

Taking the point reading pen as an example, the currently used micro-dot matrix two-dimensional code has the following characteristics: 1. It is composed of identical single code images, which is easy to be copied or tampered with, and has poor security and anti-counterfeiting performance; 2. Two kinds of codes are used. Points of different sizes, the large point is used as the anchor point of the code map, and the small point is used as the data point

As a result, the positioning mark has strong visibility and poor concealment; 3. The method of combining data point and block information is used for encoding, and the number of information points on a single code map is too large, which limits the advantage of concealment of the micro-dot QR code; 4. The encoding capacity is general Less than 1 million, which cannot meet the capacity requirements of the unique identification of many single-piece products with batches exceeding 1 million; 5. It is necessary to use special reading equipment for identification, which increases the cost of use and reduces the convenience of application

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