Method and apparatus for separating noise from a weight signal of a self-service checkout terminal
US6886746B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Jul 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07G1/0054
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A retail terminal and/or a method of operating a retail terminal having a first weight scale associated therewith includes the step of weighing an item by using the first weight scale. The method also includes the step of producing a first output signal dependent upon the weighing step. The first output signal includes a first weight signal and a first noise signal. Moreover, the method includes the step of estimating the first noise signal to produce an estimated first noise signal. Yet further, the method includes the step of subtracting the estimated first noise signal from the first output signal. A retail checkout terminal is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.