Method and device for generating and reading dynamic two-dimensional codes

Abstract

The invention provides a method and a device for generating and reading dynamic two-dimensional codes. The method for generating the dynamic two-dimensional codes comprises the following steps: encoding to-be-encoded information into information code words; calculating distribution centers of the information code words in a code word space according to the distribution of the information code words in the code word space; carrying out redundancy encoding on the encoded information cord words according to the distances from the information code words to the distribution centers to form finally encoded information cord words; and generating a dynamic two-dimensional code image sequence including a preset number of two-dimensional code images according to the encoded information cord words, and carrying the values of the distribution centers in the code word space and the initial sum in each frame of two-dimensional code image. Through application of the method and the device, original to-be-encoded information can be quickly and accurately obtained from the dynamic two-dimensional codes even if the scanning frequency of reading equipment is lower than the display frequency of the dynamic two-dimensional codes.

Description

technical field [0001] The invention relates to the technical field of two-dimensional codes, in particular to methods and devices for generating and reading dynamic two-dimensional codes. Background technique [0002] At present, with the rapid development of two-dimensional code technology, two-dimensional codes have been more and more widely used in various fields of social life. However, because the security of various two-dimensional codes used in the prior art is not high enough and is easy to be copied, the security of two-dimensional codes has begun to attract everyone's attention, especially when using two-dimensional codes for payment. The security of the QR code is particularly important in scenarios. [0003] In order to improve the security of the two-dimensional code, many technical solutions and specific implementation methods have been proposed in the prior art. For example, in the prior art, a technique for generating a dynamic two-dimensional code has bee...

AI Technical Summary

Problems solved by technology

[0004] However, when using the above dynamic QR code, there may also be some problems

For example, since multiple two-dimensional code images in the dynamic two-dimensional code are sequentially displayed according to a predetermined display frequency, if the scanning frequency of the reading device is relatively low, especially when the scanning frequency is lower than the display frequency of the dynamic two-dimensional code When it is much lower, the reading device cannot obtain all the two-dimensional code images in the two-dimensional code image sequence of the dynamic two-dimensional code through one scan, and can only read the two-dimensional code image sequence of the dynamic two-dimensional code through continuous circulation. Subsequent decoding cannot be performed until all the two-dimensional code images in the two-dimensional code image sequence are read, which will greatly prolong the reading time for the reading device to read the dynamic two-dimensional code

Therefore, it can be seen that the above-mentioned dynamic two-dimensional code is more suitable for reading devices with high scanning frequency, but not suitable for the actual scene of reading devices with low scanning frequency, thus limiting the application scenarios and Application field

Images