Patent ID: 8985470
Filing Date: 2015-03-24
Classification: G06K

Abstract:
1. A code matrix, comprising: multiple code patterns arranged adjacent to each other, each code pattern comprising: a plurality of marks; and only one positioning pattern disposed within said plurality of marks, wherein said positioning pattern consists of five positioning marks which form a shape of a cross, said five positioning marks including a central positioning mark, a first positioning mark, a second positioning mark, a third positioning mark, and a fourth positioning mark, wherein a coordinate of said central positioning mark is equal to one-fourth of a sum of coordinates of said first positioning mark, said second positioning mark, said third positioning mark, and said fourth positioning mark; and wherein the five positioning marks of said positioning pattern form the only group of marks of the plurality of marks having the coordinate of the central positioning mark equal to one-fourth of a sum of coordinates of four respective nearest neighboring marks.