G - Physics – 07 – F
Patent
G - Physics
07
F
G07F 9/02 (2006.01) G07F 17/32 (2006.01)
Patent
CA 2330188
A disclosed battery powered security monitoring system provides a security system that monitors validation signals detected by a sensor at least twice during each oscillation of the validation signal. This technique may be applied both while the main power to the gaming machine is on and while a backup power source (e.g., a battery) is on. Preferably, the security system of this invention employs a custom integrated circuit (e.g., an end-user programmed complex programmable logic device) to perform some the security functions such as supplying the validation signal to the sensor and comparing a sensor output signal to the validation signal to determine whether access to a gaming machine device has occurred.
Fetherstonhaugh & Co.
Igt
International Game Technology
LandOfFree
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