Double-layer two-dimensional code and anti-counterfeiting or/and capacity-enlarging method based on same

Abstract

Disclosed are a double-layer two-dimensional code and an anti-counterfeiting or / and capacity-enlarging method based on the same. The double-layer two-dimensional code comprises a transparent printing stock and a base material, a transparent glue layer is arranged on one side of the transparent printing stock, a flexible photosensitive resin layer is arranged on one side of the base material, the transparent printing stock is pasted on the flexible photosensitive resin layer via the transparent glue layer, a first matrix-type two-dimensional code part containing first information is printed on the surface of the transparent printing stock, white transparent portions in the first matrix-type two-dimensional code part are exposed to be a second matrix-type two-dimensional code part containing second information by a cold light source, and the first matrix-type two-dimensional code part and the second matrix-type two-dimensional code part complement each other in shape within an area occupied by the matrix-type two-dimensional code. Under the condition that occupied area and structure of an existing matrix-type two-dimensional code are not changed, information capacity of the matrix-type two-dimensional code can be enlarged, or / and the two-dimensional code is enabled to have the advantage of an anti-counterfeiting function.

Description

technical field [0001] The invention relates to a double-layer two-dimensional code and an anti-counterfeiting or / and capacity expansion method based on the double-layer two-dimensional code. Background technique [0002] A two-dimensional code is a code that uses certain specific geometric figures distributed in a plane (two-dimensional direction) according to certain rules to record data symbol information in two different colors and alternate graphics. The two-dimensional code cleverly utilizes the concept of "0" and "1" bit streams that constitute the internal logic basis of the computer in the coding, and uses several geometric shapes corresponding to the binary to represent the text and numerical information, through the image input device or The photoelectric scanning equipment automatically reads to realize the automatic processing of information. At the same time, it also has the characteristics of automatic identification of information in different row...

AI Technical Summary

Problems solved by technology

However, for some people who cannot access the Internet, such as some elderly people or children, this expansion method is invalid; for those who can access the Internet, this expansion method will increase their network usage costs and increase The user's burden; in addition, a single QR code does not have the effect of anti-counterfeiting

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