ADAPTIVE POINT-OF-SALE (POS) DEVICE

• US 20190094064A1
• Filed: 11/29/2018
• Published: 03/28/2019
• Est. Priority Date: 05/15/2014
• Status: Active Grant

• Current Assignee: NCR Voyix Corporation
• Original Assignee: NCR Corporation
• Inventors: Heske, III, Theodore
• Granted Patent: US 10,852,178 B2
• Time in Patent Office: Days
• CPC Class Codes: G01G 19/4144 for controlling weight of goods in commercial establishments, e.g. supermarket, P.O.S. systems
• CPC Class Codes: G01G 23/01 Testing or calibrating of weighing apparatus
• CPC Class Codes: G01G 23/10 by electric or magnetic means

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.

Claims

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.

2. The method of claim 1, wherein identifying further includes identifying the frequency when a state of the load cell indicates the load cell is likely not in use.

3. The method of claim 1, wherein identifying further includes identifying the frequency as a periodic mechanical vibration from equipment in an operating environment of the load cell.

4. The method of claim 1, wherein recognizing further includes comparing the frequency to data representing a spectral analysis of a vibrational environment for the load cell, the data including vibrational frequencies and magnitudes of peaks for those vibrational frequencies.

5. The method of claim 4, wherein comparing further includes using select vibrational frequencies for each peak having a threshold magnitude as input to a notch filter.

6. The method of claim 5, wherein adjusting further includes processing the notch filter during operation of the load cell to subtract out the frequency from the signals of the load cell.

7. The method of claim 6 further comprising, iterating the processing for other frequencies relevant to vibrations in an operating environment of the load cell and producing a different notch filter that is processed for each of the other frequencies.

8. The method of claim 1 further comprising, performing a unique iteration of the processing for a different load cell.

9. The method of claim 1 further comprising, integrating the processing into a scale having the load cell and a weigh plate coupled to the load cell.

10. The method of claim 1, wherein the scale is a composite device having a scanner.

11-20. -20. (canceled)