Patent Document ID: 20160072980
Application ID: 14783819
Patent Status: 0

Claim One:
1. A method for producing unforgeable printable image from information data, comprising following steps: encoding the information data in a form of binary information image dots by means of an encoding rule, wherein the binary information image dots are arranged screen-like according to a first screen in the respective first screen areas (R 1 ) within an image area (R 0 ); partitioning the respective first screen areas (R 1 ) by a second screen to respective second screen areas (R 2 ), so that a plurality of second screen areas (R 2 ) is formed for each first screen area (R 1 ); determining a respective information field (lxy) from the respective second screen areas (R 2 ) of the respective first screen area (R 1 ) according to a first assignment rule and determining the remaining second screen areas (R 2 ) as interference fields (Sxy); assigning to the respective information field (lxy) depending on the value of the information image dot at a value of 1 a first information color value (IF 1 ) and at a value 0 a second information color value (IF 0 ) according to an information color value assignment rule; determining and assigning a respective interference color value to the respective interference fields (Sxy) according to an interference color value assignment rule; and storing the second screen areas with the respective information color values (IF 1 , IF 0 ) and interference color values as the image information data; and printing the unforgeable printable image based on the image information data.