Patent ID: 11968345
Assignee: INNOVIEW SARL
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A computer-based system for creating a color halftone print that is authenticable, comprising:
a central processing unit,
a memory,
a mass storage unit,
a network interface,
software executed by the central processing unit comprising:
(i) a first module creating in said memory, screen elements with diagonally oriented juxtaposed clustered dots dimensioned by surface coverages of colorants present within the screen elements,
(ii) a second module creating in said memory, diagonally oriented juxtaposed clusters of dispersed dots through a dispersed dot half toning procedure applied to the diagonally oriented juxtaposed clustered dots,
(iii) a third module transferring halftones made of the diagonally oriented juxtaposed clusters of dispersed dots to a printer and printing the halftones to obtain the color halftone print with following specific characteristic features:
the diagonally oriented juxtaposed clusters of dispersed dots are surrounded by unprinted space,
the diagonally oriented juxtaposed clusters of dispersed dots belonging to different colorants have a same diagonal orientation, and
the diagonally oriented juxtaposed clusters of dispersed dots do not overlap;

wherein authentication of the color halftone print comprises:
capturing an image of the color halftone print using a smartphone with an RGB camera;
verifying the presence of the specific characteristic features; and
based on the verifying, acknowledging the authenticity of the color halftone print when the specific characteristic features are present.