Optical symbol, article to which the optical symbol, method for setting a fixed optical symbol to an article and method for recognizing a code by OCR.

摘要

optical symbol (1020) comprising cells arranged continuously (1010) each including "n" element portions (1012) from a first element to an element of order n. wherein an element of order k may be arranged in two states: a state in which there is provided a color of a first group of colors, and a state in which there is provided the color of the first color group being " n "an integer of 3 or higher and being" k "an integer from 1 to" n ", wherein the cells (1010) are arranged so that the element of order k of a cell is adjacent the order k of an adjacent cell, wherein if a color of the first color set is provided to the element of order k, this color is the same for the elements of order k of cells arranged continuously, if one color of the first group color is provided, at least two elements of a cell, the colors of at least two elements within the same cell are different from each other, for all cells except the first and last cell in the optical symbol, at least one element of the cell is in a state in which s and facilitates the color of the first color group, and a state of one and only one of the "n" elements included in adjacent cells changes from cell to cell.