Patent ID: 6101266
Filing Date: 2000-08-08
Classification: G07D

Abstract:
Apparatus for determining a condition of a note sensed by the apparatus in a note path comprising:a radiation source on a first side of the note path, wherein when the note is positioned in the note path the radiation source directs radiation at a test spot on the note;a first detector on the first side of the note path, wherein the first detector outputs a first signal responsive to radiation reflected from the test spot to the first detector;a second detector on a second side of the note path, wherein the second detector outputs a second signal responsive to radiation transmitted through the test spot to the second detector; anda circuit in operative connection with a data store, wherein the circuit is operative to calculate a first value responsive to magnitudes of both the first signal and the second signal, and wherein the circuit is further operative to compare the first value and a threshold value, wherein the threshold value corresponds to at least one second value stored in the data store.