| 摘要 |
PROBLEM TO BE SOLVED: To provide a generation method of two two-dimensional codes capable of obtaining a two-dimensional code having new information by overlapping the same.SOLUTION: Plural pieces of first-third information are converted into a character data symbol string Sz, Sx and Sy including t symbols. A black data symbol string including "1" only and a random data symbol string are generated by performing a predetermined mask processing. A two-dimensional code symbol string Z is generated by disposing the black data symbol string and the random data symbol string following the top character data symbol string Sz and by adding an error correction data symbol string including 2t symbols. Thus, distributed two-dimensional code symbol strings X and Y are generated, in which the character data symbol strings Sx and Sy are disposed at the top, and symbols are disposed so that the black data symbol string, the random data symbol string and the error correction data symbol string of the two-dimensional code symbol string Z appear by performing OR operation thereon. |
