MATRIX TYPE TWO-DIMENSIONAL CODE, AND ENCODING METHOD AND DECODING METHOD THEREFOR

摘要

Disclosed are a matrix type two-dimensional code, and an encoding method and a decoding method therefor. The matrix type two-dimensional code comprises a matrix composed of N × N modules, and the matrix comprises a data region for storing data information and a finder pattern arranged around the data region, the data region comprising: a default module arranged on a vertex of the data region, a column parity check unit comprising N-3 bits of column parity check bits for storing column parity check codes, a row parity check unit, comprising N-3 bits of row parity check bits for storing row parity check codes, a CRC check unit comprising 8 bits of CRC check bits for storing CRC check codes, and an information storage unit comprising several bits of information bits for storing data information. According to the matrix type two-dimensional code provided in the present invention, the error check capability is high, some types of errors can be corrected, a correction pattern is not needed, the number of barcode modules is small, the data encoding method is simple, the encoding efficiency is high, and the amount of redundant information is small.