How are the types of QR code generators classified into dozens of QR codes? Commonly used codes are:
G Shang Tong QR code, PDF4 17 QR code, Datamatrix QR code, Maxicode QR code, Code 49, Code 16K, Code one, etc. besides these common two-dimensional barcodes, there are Vericode barcode, CP barcode, Codablock F barcode, Tian Zi barcode, Ultracode barcode and Aztec barcode.
There are two common types of QR code generators:
First: stack/row QR code
Stacked/line 2D barcode (also called stacked 2D barcode or layered 2D barcode), its coding principle is based on one-dimensional barcode and stacked into two or more lines as required. It inherits some characteristics of one-dimensional bar code in coding design, checking principle and reading mode, and the reading equipment is compatible with bar code printing and one-dimensional bar code technology. However, due to the increase of the number of lines, it is necessary to judge the number of lines, and its decoding algorithm and software are not exactly the same as those of one-dimensional bar code. Representative two-dimensional bar codes are: Code 16K, Code 49, PDF4 17, etc.
Second: Matrix QR code
Short array two-dimensional bar code (also known as chessboard two-dimensional bar code) is coded in rectangular space by the different distribution of black and white pixels in the matrix. Binary is represented by the appearance of a point (square, point or other shape) at the position of the corresponding element of the matrix. 1? Does no dot mean binary? 0? The arrangement and combination of points determine the meaning of matrix two-dimensional barcode. Matrix two-dimensional bar code is a new coding system based on computer image processing technology and combined coding principle, which can automatically read and process graphic symbols. Representative matrix two-dimensional codes include: code one, Maxi code, two-dimensional code, data matrix and so on.
Besides, the QR code ui is also a kind of QR code, which is different from the traditional one-dimensional code (such as the barcode on the goods). Two-dimensional code stores information in both horizontal and vertical directions, so the information capacity is greatly improved. QR code? It is a registered trademark of Denso Wave Company.
Tips:
2D barcode/QR code can be divided into stacked 2D barcode and matrix 2D barcode. The stacked/row-arranged two-dimensional bar code is formed by stacking a plurality of rows of chopped one-dimensional bar codes; Matrix two-dimensional bar code is composed of matrix, which is used for the corresponding element position of matrix. Point? Represents binary? 1? , use? Empty? Represents binary? 0? By who? Point? And then what? Empty? The arrangement of codes.