Check-actuated control mechanisms – Control mechanism actuated by check – other than coin – which... – By pliant currency
Patent
1998-12-07
2000-06-06
Olszewski, Robert P.
Check-actuated control mechanisms
Control mechanism actuated by check, other than coin , which...
By pliant currency
250214R, G06K 708, H01J 4014
Patent
active
060707100
ABSTRACT:
A photoelectric measurement is made by charging (or discharging) a capacitor at a charge rate dependent on the intensity of the light received by a sensor. The time taken for the charge level to change by a predetermined amount is measured, and the operation is repeated, with the time intervals being accumulated, for a number of times, the number being dependent on the charge rate, so as to enhance resolution of high-intensity measurements. A single comparator is used to detect when the charge level passes through a first level, to initiate the timing, and through a second level, to stop the timing, by altering the threshold level so as to avoid errors due to varying propagation delays.
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Jaketic Bryan
Mars Incorporated
Olszewski Robert P.
LandOfFree
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