EP 2143081 A1 20100113 - METHOD AND DEVICE FOR TESTING VALUE DOCUMENTS
Title (en)
METHOD AND DEVICE FOR TESTING VALUE DOCUMENTS
Title (de)
VERFAHREN UND VORRRICHTUNG ZUR PRÜFUNG VON WERTDOKUMENTEN
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR VÉRIFIER DES DOCUMENTS-VALEURS
Publication
Application
Priority
- EP 2008003220 W 20080422
- DE 102007019107 A 20070423
Abstract (en)
[origin: WO2008128755A1] The invention relates to a method and a device for detecting counterfeit value documents, such as composed counterfeits made up of parts of different value documents. In the method according to the invention, the signal intensity of a measurement signal is determined at a plurality of measurement points on a value document. For one or more selected groups of measurement points, located particularly along certain directions on the value document, gradient values are determined for the signal intensities. The gradient values of a group are then linked to a connection strength of the group, providing quantitative information about to what extent a large gradient value exists continuously within the corresponding group. The presence of a dividing line in the region of the selected group of measurement points can be deduced from a relatively great connection strength.
IPC 8 full level
G07D 7/00 (2006.01)
CPC (source: EP US)
G07D 7/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2008128755A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007019107 A1 20081030; CN 101689316 A 20100331; CN 101689316 B 20131211; EP 2143081 A1 20100113; EP 2143081 B1 20181024; RU 2009142938 A 20110710; RU 2452030 C2 20120527; US 2010128934 A1 20100527; US 8837804 B2 20140916; WO 2008128755 A1 20081030
DOCDB simple family (application)
DE 102007019107 A 20070423; CN 200880013337 A 20080422; EP 08749044 A 20080422; EP 2008003220 W 20080422; RU 2009142938 A 20080422; US 59740408 A 20080422