Method to eliminate RFID cross reads for RFID point of sale scanners using imager object tracking
US11144739B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jul 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10118
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for eliminating RFID cross-reads for RFID point of sale scanners using imager object tracking are disclosed herein. An example method includes measuring, by an imager a series of displacements of an object from a center of the field of view (FOV) of the imager, over a timeframe; measuring, by an RFID reader, a series of received signal strengths for an RFID tag over the same timeframe; comparing the series of displacements to the series of received signal strengths over the timeframe to determine a measure of similarity between the series of displacements of the object from the center of the FOV of the imager and the series of received signal strengths for the RFID tag over the timeframe; and responsive to the measure of similarity exceeding a threshold measure of similarity, adding a record associated with the RFID tag to a transaction log.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.