The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2020
Filed:
Apr. 10, 2017
Giesecke+devrient Currency Technology Gmbh, Munich, DE;
Hendrik Derks, Geretsried, DE;
Jan Domke, Vaterstetten, DE;
Johannes Feulner, Munich, DE;
Norbert Holl, Germering, DE;
Steffen Schmalz, Munich, DE;
Dieter Stein, Holzkirchen, DE;
Stefan Kokrhoun, Grobenzell, DE;
GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich, DE;
Abstract
An apparatus and a corresponding method for checking value documents, involves at least one first sensor configured to detect electromagnetic radiation reflected and/or transmitted by a value document and to convert the radiation into corresponding first sensor signals. At least one second sensor is configured to detect sound waves reflected and/or transmitted by the value document and to convert the sound waves into corresponding second sensor signals, and an evaluation device configured to determine a first area value which characterizes a first area of the value document on the basis of the first sensor signals, to determine a second area value which characterizes a second area of the value document on the basis of the second sensor signals, and to infer a possible identification marking of the value document with a marking ink on the basis of the first and second area value.