Patent ID: 9582701
Date: 2017-02-28
CPC Classifications: G06K

Claim:
1. A system comprising: an optical reader; a printed matter with a dot pattern readable by the optical reader, the dot pattern comprising: a plurality of first reference grid point dots which are arranged in one direction; a plurality of second reference grid point dots which are arranged in other direction from one first reference grid point dot among the first reference grid point dots; and one or more information dots, wherein one or more start points are defined at one or more of intersection points of lines which are virtually set beginning from the first reference grid point dots in the other direction and lines which are virtually set beginning from the second reference grid point dots in the one direction, and the information dots are arranged with reference to the start points, respectively, and each of the information dots have a distance and a direction from the corresponding start point, wherein the optical reader analyzes the dot pattern and numerically values the dot pattern, and wherein the arrangement of the dot pattern on the printed matter permits the dot pattern to convey information when read by the optical reader.