Patent ID: 6752316
Filing Date: 2004-06-22
Classification: G06K

Abstract:
An optically readable two-dimensional code, including a matrix data elements area which contains encoded information, and information identifying physical size and density of the code, said two-dimensional code information which identifies the physical size comprising:a first line drawn from an upper side aspect left corner point of said matrix data elements area to an upper side aspect right corner point, a second line drawn from said upper side aspect right corner point to a right side aspect middle point, a third line which crosses said data element area horizontally and is drawn from said right side aspect middle point to a left side aspect middle point, a fourth line drawn from said left side aspect middle point to a bottom side aspect left corner point, and a fifth line drawn from said bottom side aspect left corner point to a bottom side aspect right corner point, said first, second, third fourth and fifth lines forming one solid line in alphanumeric Z-shape to be scanned and utilized for determining said matrix data elements area.