EP 0661674 A1 19950705 - Method and apparatus for point-of-sale digital half-toning image verification.
Title (en)
Method and apparatus for point-of-sale digital half-toning image verification.
Title (de)
Verfahren und Gerät, mittels eines digitalen Halbtonbildes zum Verkaufszeitpunkt eine Bestätigung vorzunehmen.
Title (fr)
Procédé et appareil pour faire une certification au moment de la vente à l'aide des images à demi-teintes.
Publication
Application
Priority
US 17409793 A 19931228
Abstract (en)
Apparatus and method provide a method for providing recognizable halftone images from using printing apparatus which is not, or only marginally capable of intrinsic halftone operation from a transaction card. By increasing the capability to provide halftone images, fraud associated with transaction cards can be reduced. <IMAGE>
IPC 1-7
IPC 8 full level
G06K 17/00 (2006.01); G06T 1/00 (2006.01); G07C 9/00 (2006.01); H04N 1/40 (2006.01)
CPC (source: EP)
G07C 9/253 (2020.01)
Citation (search report)
- [Y] US 5027401 A 19910625 - SOLTESZ JOHN A [US]
- [Y] GB 2173970 A 19861022 - MATSUSHITA ELECTRIC WORKS LTD
- [Y] EP 0247788 A2 19871202 - NAT BUSINESS SYST [CA]
- [Y] DE 2356741 A1 19740606 - DAINIPPON PRINTING CO LTD [JP], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94203645 A 19941215; JP 31879794 A 19941221