Patent ID: 8714456

Claim:
A two-dimensional code formed by arranging cells in m×n (1≦m, 1≦n), wherein cell groups are formed by dividing the cells arranged in m×n into cell groups respectively constituted by one or more cells, a plurality of colors (to be referred to hereafter as “information colors”) or color combinations (to be referred to hereafter as “combined colors”) are respectively associated with different information, and a mark is attached to each cell group using an information color or a combined color associated with information to be expressed by the cell group, from among the information colors and combined colors, when a component model is defined, in which a plurality of component regions respectively extending as multi-dimensional regions are located within a multi-dimensional space representing a distribution of color components in a positional relationship that prevents interference between the component regions, the marks are attached to the cell groups using components represented by specific coordinates in the component regions located in the component model as components of the information colors or respective color components included in the combined colors, the component regions are located in the component model so as to extend respectively from the specific coordinates, and components represented by center coordinates of the respective component regions are used as the components of the information colors or the respective color components included in the combined colors.