Matrix two-dimensional code coding method and decoding method

Abstract

The invention provides a matrix two-dimensional code coding method and decoding method. The method comprises steps that an information code is converted into a data code; a corresponding error correction code is generated according to a selected error correction grade and an error correction mode; a two-dimensional code symbol dimension parameter is calculated; a default unit, a column odd-even check unit, a row odd-even check unit, a CRC verification unit, an information storage unit and a view finding graph are generated, the function information is converted into a binary system data bit flow according to a preset coding mode, a rectangular area is set, and a two-dimensional code is generated. The method is advantaged in that the column odd-even check unit, the row odd-even check unit and the CRC verification unit are set through a matrix two-dimensional code to verify the information stored in the two-dimensional code, interlacing ability is strong, mistakes in certain forms can becorrected, no correction graph is needed, the quantity of bar codes is small, the data coding mode is simple, coding and decoding efficiency is high, and the redundancy information is little.

Description

technical field [0001] The invention relates to the field of data identification, in particular to the field of encoding methods and decoding methods of matrix two-dimensional codes. Background technique [0002] Bar code technology is an emerging technology developed on the basis of computer technology and information technology that integrates coding, printing, identification, data collection and processing. The barcodes usually printed on commodity packaging are ordinary one-dimensional barcodes. One-dimensional barcodes have the following disadvantages: the data capacity is small, and the character set that most one-dimensional barcodes can represent is only 10 numbers, 26 English letters and some special characters; the size of barcode symbols is relatively large, that is, the space utilization rate Lower; the barcode cannot be read after it has been damaged, etc. In daily applications, once a one-dimensional barcode is used to represent Chinese characters, it is very...

AI Technical Summary

Problems solved by technology

One-dimensional barcodes have the following disadvantages: the data capacity is small, and the character set that most one-dimensional barcodes can represent is only 10 numbers, 26 English letters and some special characters; the size of barcode symbols is relatively large, that is, the space utilization rate Lower; barcodes cannot be read after damage, etc.

The reading speed of the QR code is slow, and it is not easy to read when it is damaged

Images