Signatures and labels in a blockchain derived from digital images
US12236300B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2022 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Apr 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32309
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method for generating at least one security label (110) using at least one printing device (112) is proposed. The method comprises the following steps: i) (114) generating a first digital image (116) comprising a plurality of colored pixels by printing a printer job with a printer control setting and scanning the printout using the printing device (112) thereby generating a digital fingerprint: ii) (118) providing a binary code (120) of identifier information: iii) (122) mapping the identifier information with the digital fingerprint by determining a binary code of the digital fingerprint and adding the binary code (120) of the identifier information to the color code of the first digital image (116); iv) (124) generating a second digital image (126) having a plurality of colored pixels different from the first digital image (116) by transferring the added binary codes into a color code of the second digital image (126): v) (128) printing the second digital image (126) on a substrate (129) thereby generating the security label (110).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.