A method of generating a two-dimensional code includes the steps of allocating a number of background entries on a carrier for a constant background pattern detectable by a reader. Background dots are printed on the carrier to define the background pattern. A number of data entries are allocated on the...http://www.google.fr/patents/US7310157?utm_source=gb-gplus-shareBrevet US7310157 - Method of generating a two-dimensional code with a constant background pattern
Method of generating a two-dimensional code with a constant background pattern
