Patent · US Active

Securing of documents by means of digital watermark information

US8478080B2 · kind B2 · utility

6Cited by

32References

17Claims

0Family size

Assignees

Bayer MaterialScience AG · DE
BUNDESDRUCKEREI GMBH · DE

Inventors

Edward Springmann · Berlin, DE
Manfred Paeschke · Wandlitz, DE
Oliver Muth · Berlin, DE

Key dates

Filing date	Oct 31, 2008
Grant date	Jul 2, 2013
Priority date	—
Expiry date	Jan 7, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG07D7/0034
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

In the production of a document, image information is incorporated into a plurality of layers of the document such that the pieces of image information are combined into a total image. The image information in at least two of the layers includes digital watermark information. The entirety of the digital watermark information in the at least two layers forms a security feature for an authentication of the document. The invention further relates to a respective document, a method for authentication, and a device for authentication.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.