Beijing Bigcode Technology Co., Ltd.

Beijing Sigone Investment Co., Ltd

Siping Wang

Wei Shen

Disclosed is an apparatus for generating a composite two-dimensional code, comprising: a two-dimensional code encoding module, a two-dimensional code pattern generating module, a hidden information encoding module, a hidden information pattern generating module, a recoding region setting module, an pattern compositing module, and an output module. The two-dimensional code encoding moduleconverts the inputted two-dimensional code information into a binary codeword sequence to generate two-dimensional code coding information; the two-dimensional code pattern generating modulegenerates a two-dimensional code pattern based on the two-dimensional code coding information; the hidden information encoding moduleconverts the hidden information into a binary codeword sequence to generate recoding information; the recoding region setting modulesets, in the two-dimensional code pattern, a recoding region for encoding the hidden information; the hidden information pattern generating modulegenerates a hidden information coding pattern formed by dark-colored blocks and light-colored blocks based on the recoding information; and the pattern composing moduleadjusts a block distribution in the recoding region of the two-dimensional code pattern based on the hidden information coding pattern so as to encode the hidden information.

Method and apparatus for generating and reading composite two-dimensional code

There is provided a combined two-dimensional code generating apparatus, comprising: a two-dimensional code information generating module (), a key information generating module (), an abstract computing module (), a two-dimensional code coding module (), a two-dimensional code image generating module (), and a dot matrix image generating module (), wherein: the two-dimensional code information generating module is configured for generating data information to be coded into the two-dimensional code; the key information generating module is configured for generating a key for computing an abstract; the abstract computing module is configured for computing, using a Hash algorithm, the data information of the two-dimensional code and the abstract of the key; the two-dimensional code coding module is configured for combining the abstract information and the data information of the two-dimensional code into coding data of the two-dimensional code; the two-dimensional code image generating module is configured for coding the coding data of the two-dimensional code into the two-dimensional code to generate a two-dimensional code image. The dot matrix image generating module is configured for generating a corresponding dot matrix based on the key information, wherein the dot matrix is positioned by a positioning image of the two-dimensional code and generated outside or inside the two-dimensional code image, the bit error rate caused by the dot matrix being smaller than the error correction rate of the two-dimensional code.

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Beijing, China

Siping Wang