Communications: electrical – Systems – Game reporting
Patent
1998-05-12
2000-08-22
Lee, Benjamin C.
Communications: electrical
Systems
Game reporting
3405725, 3405727, 34082531, 34082534, 34082554, 235435, 235439, 235440, 235449, 235450, G08B 2300
Patent
active
061079138
ABSTRACT:
A sensor and a method for determining the state of conductive ink patterns applied to scratchable latex layers of instant-win tickets and other documents having scratchable latex layers affixed thereon. The device and method are based upon the generation of a radio frequency field across the conductive ink patterns on the document, using an array of miniature transmission RF antennas and reception antennas, and the detection of the induced radio frequency signal. The presence, absence or state of the conductive ink patterns subjected to the RF field affects and changes the signal received on the receiving antennas. The signal received on the receiving antennas is conditioned and processed, so as to extract therefrom information relative to the state of the conductive ink patterns. This non-contact method does not damage the latex layer when the ticket or document is advanced at high speed through the sensor and is suitable for integration into high-speed optical scanners.
REFERENCES:
patent: 5381137 (1995-01-01), Ghaem et al.
patent: 5453015 (1995-09-01), Vogel
patent: 5471039 (1995-11-01), Irwin, Jr. et al.
patent: 5604485 (1997-02-01), Lauro et al.
Brunet De Courssou Thierry
Gatto Jean-Marie
Cyberscan Technology, Inc.
Lee Benjamin C.
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