Patent ID: 7702162
Filing Date: 2010-04-20
Classification: G06K,G06T

Abstract:
1. A computer readable storage medium having embodied thereon a mixed code a mixed code obtained by overlapping first information with second information in a region, the first and second information made using at least one of a character, a number, a sign, and an image, the mixed code comprising: a first code image region storing a first code image obtained by encoding the first information and construction information regarding a second code image, the first code image made using colors, shading, or a combination thereof; and a second code image region storing the second code image obtained by encoding the second information, the second code image made using colors, shading, or a combination thereof, the second code image overlapping with the first code image, the colors and shading being distinguished from the colors and shading used in the first code image, using a predetermined threshold.