ADAPTIVE POINT-OF-SALE (POS) DEVICE
First Claim
Patent Images
1. A method, comprising:
- identifying a frequency produced on a load cell;
recognizing the frequency as noise; and
adjusting the load cell to remove the frequency from signals produced by the load cell when the frequency is present.
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Abstract
A Point-Of-Sale (POS) device detects vibrations produced from equipment in its operational environment. The vibrations are identified and one or more filters produced to remove the vibrations when the POS device is used to improve the accuracy of the POS device.
5 Citations
20 Claims
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1. A method, comprising:
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identifying a frequency produced on a load cell; recognizing the frequency as noise; and adjusting the load cell to remove the frequency from signals produced by the load cell when the frequency is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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finding a center frequency that substantially matches a vibrational frequency for a vibration at a vibrational peak for the vibration; determining a width frequency wide enough in frequency to span a substantial portion of a frequency spectrum corresponding to the vibrational peak; resolving a magnitude response at the center frequency that is inversely proportional to a vibrational peak magnitude for the vibrational peak; resolving a second magnitude response outside the width frequency; applying the magnitude response and the second magnitude response as a filter to signals on a load cell when the vibrational frequency is detected in the signals. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An Point-Of-Sale (POS) device, comprising:
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a processor; a weigh plate; a spectra analyzer adapted and configured to;
i) execute on the processor and ii) produce a frequency spectrum for a vibrational frequency; anda notch filter adapted and configured to i) execute on the processor and ii) remove the vibrational frequency from signals of a load cell when the vibration frequency is present in the signals by using the frequency spectrum and the vibrational frequency. - View Dependent Claims (18, 19, 20)
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Specification