G - Physics – 07 – D
Patent
G - Physics
07
D
G07D 7/12 (2006.01) A63F 3/06 (2006.01)
Patent
CA 2295484
A system and method for determining which of a plurality of visually indistinguishable objects (14) have been marked with a covert indicator (10) in which a portion of a surface (12) of each of a first type of objects (14) are provided with a covert holographic indicator (10) which is exposed to be viewed but which is detectable only when illuminated with a coherent reference light of predetermined wavelength. The surfaces (12) of objects (14) are scanned with a coherent reference light with the predetermined wavelength, and evaluated to determine whether the scanned surfaces include the covert holographic indicator (10). The presence of the covert holographic indicator (10) indicates that the object (14) on which the covert holographic indicator (10) is detected is one of the first type of objects. The first type of object may be a winning game ticket, or a genuine, as opposed to counterfeit, article.
L'invention porte sur un système et un procédé permettant de reconnaître dans un ensemble d'objets (14) visuellement semblables ceux qui ont été marqués avec un repère secret (10). Une partie de la surface (12) de chacun des objets d'un premier type est munie d'un repère holographique secret (10) exposé à la vue mais ne pouvant être détecté que lorsqu'on l'illumine avec une lumière cohérente de référence d'une longueur d'onde prédéterminée. Les surfaces (12) des objets (14), balayées par ladite lumière sont inspectée pour déterminer si elles comportent ou non lesdits repères secrets (10). La présence desdits repères (10) indique que l'objet est du premier type. Le premier type d'objet peut être un ticket gagnant d'un jeu ou un objet original par opposition à ses contrefaçons.
Proma Technologies Inc.
Smart & Biggar
Van Leer Metallized Products (u.s.a.) Limited
LandOfFree
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