Multiple sheet detector apparatus and method
First Claim
1. An article bearing processor readable instructions operative to cause at least one processor to cause at least one apparatus to carry out a method comprising:
- a) directing a sound signal through a pathway through which sheet media moves;
b) acquiring at least one receiver signal responsive to the sound signal, wherein at least a portion of the at least one receiver signal is produced responsive to the sound signal after having passed through the sheet media moving in the pathway;
c) producing a first output representative of changes in phase of the at least one receiver signal relative to a first reference signal;
d) producing a second output representative of changes in phase of the at least one receiver signal relative to a second reference signal, wherein the first and second reference signals differ in phase;
e) acquiring a plurality of samples of the first and second outputs;
f) comparing the samples of the first and second outputs to determine information corresponding to changes in phase of the sound signal after having passed through the sheet media;
g) responsive to (f), moving the sheet media with at least one transport.
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Accused Products
Abstract
A detector for a deposit accepting apparatus of an automated banking machine or for another sheeting handling system includes an ultrasonic transmitter driven by a driving signal operative to cause the ultrasonic transmitter to transmit an ultrasonic sound signal through a sheet pathway of the detector. The detector also includes an ultrasonic receiver operative to generate a receiver signal responsive to the ultrasonic sound signal. The detector further includes first and second correlation filters. The first and second correlation filters are operative to generate first and second outputs responsive to the receiver signal. At least one processor is operative responsive to the first and second outputs of the correlation filters to determine information associated with changes in phase of the ultrasonic sound signal and to distinguish between single and multiple sheets in the pathway responsive to the information associated with changes in phase.
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Citations
7 Claims
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1. An article bearing processor readable instructions operative to cause at least one processor to cause at least one apparatus to carry out a method comprising:
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a) directing a sound signal through a pathway through which sheet media moves; b) acquiring at least one receiver signal responsive to the sound signal, wherein at least a portion of the at least one receiver signal is produced responsive to the sound signal after having passed through the sheet media moving in the pathway; c) producing a first output representative of changes in phase of the at least one receiver signal relative to a first reference signal; d) producing a second output representative of changes in phase of the at least one receiver signal relative to a second reference signal, wherein the first and second reference signals differ in phase; e) acquiring a plurality of samples of the first and second outputs; f) comparing the samples of the first and second outputs to determine information corresponding to changes in phase of the sound signal after having passed through the sheet media; g) responsive to (f), moving the sheet media with at least one transport. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification