Security feature for a data medium, and data medium

Patent metadata

Field	Value
Publication number	US-12437178-B2
Application number	US-202218682786-A
Country	US
Kind code	B2
Filing date	Aug 9, 2022
Priority date	Aug 11, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A security feature for a data carrier, having a substrate, an encoded representation of the security feature arranged in or on the substrate, wherein a plurality of individual representations are contained in the encoded representation and wherein the plurality of individual representations are arranged in a division over a dimension of the security feature, and a decoder with a grid, wherein a grid pitch of the grid of the division corresponds to an integer multiple of the division or a halving of the division.

First claim

The invention claimed is:

1. A security feature for a data carrier, comprising:
a substrate,
an encoded representation of the security feature arranged in or on the substrate, and
a decoder with a grid,
wherein a plurality of individual representations are contained in the encoded representation,
wherein each of the plurality of individual representations are arranged in a division over a dimension of the security feature,
wherein a grid pitch of the grid of the decoder corresponds to an integer multiple of the division or a halving of the division, and
wherein a number of the plurality of individual representations is equal to a number of divisions over the dimension of the security feature.

2. The security feature according to claim 1 , wherein the grid is designed in the form of a line grid or dot grid.

3. The security feature according to claim 1 , wherein, in the viewing direction, the decoder is arranged above or below the encoded representation on the substrate.

4. The security feature according to claim 3 , wherein the decoder comprises demetallized structures.

5. The security feature according to claim 1 , wherein the decoder is provided externally to the encoded representation and, in the viewing direction, is arrangeable above the encoded representation.

6. The security feature according to claim 5 , wherein the decoder is a smartphone app, in which a grid fitting to a respective encoded representation is provided.

7. The security feature according to claim 5 , wherein the encoded representation is displayed on an electronic visual display or in that the decoder is an electronic visual display,
wherein the grid corresponds to a line or dot pitch of the electronic visual display.

8. The security feature according to claim 5 , wherein the encoded representation is a moving representation when there is relative movement between the decoder and the encoded representation.

9. The security feature according to claim 1 , wherein the substrate is transparent.

10. The security feature according to claim 1 , wherein the encoded representation is a security guilloche.

11. The security feature according to claim 1 , wherein the encoded representation is a moving representation when the security feature is tilted.

12. A data carrier such as a valuable document or a chip card, having a carrier on or in which a security feature according to claim 1 is arranged.

13. The data carrier according to claim 12 , wherein the decoder is an antenna of the data carrier and is arranged below the encoded representation in a transparent region of the data carrier.

14. The data carrier according to claim 12 , wherein the decoder is arranged in a transparent region of a data page of a valuable document and in that the encoded representation is arranged on a paper page of the valuable document.

15. A data carrier comprising:
a carrier on or in which a security feature is arranged, the security feature comprising:
a substrate,
an encoded representation of the security feature arranged in or on the substrate,
wherein a plurality of individual representations are contained in the encoded representation,
wherein each of the plurality of individual representations are arranged in a division over a dimension of the security feature, and

a decoder with a grid,
wherein a grid pitch of the grid of the decoder corresponds to an integer multiple of the division or a halving of the division,
wherein the decoder is an antenna of the data carrier and is arranged below the encoded representation in a transparent region of the data carrier.

Assignees

• Giesecke & Devrient Epayments Gmbh

Inventors

• Fabian Cristina
• Tarantino Thomas
• Kohl Klaus
• Riedl Josef

Classifications

• B42D25/373

  Metallic materials · CPC title

• B42D25/337

  Guilloche patterns · CPC title

• B42D25/305

  Associated digital information (record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00) · CPC title

• G06K19/07309 Primary

  Means for preventing undesired reading or writing from or onto record carriers · CPC title

• B42D25/351 Primary

  Translucent or partly translucent parts, e.g. windows · CPC title