| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-dimensional code capable of storing a greater amount of data without increasing outer size. <P>SOLUTION: This two-dimensional code has: a symbol showing a position that is a reference when read; and a data cell expressing information by a distribution pattern of the cell. The data cell includes one or more colored unit cells each having a color corresponding to one of a threshold values preset to at least three stages. <P>COPYRIGHT: (C)2008,JPO&INPIT |
