Fraud detection system and method
US11475741B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2021 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jul 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F19/207
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for detecting a foreign object is disclosed. A transmit assembly has a transmit electrode, a ground plane, and a shield electrode positioned between the transmit electrode and the ground plane. Drive circuitry applies a predetermined fixed signal to the transmit electrode and to the shield electrode. A receive assembly is positioned adjacent to the transmit assembly and has a receive electrode. Detection circuitry is coupled to the receive electrode and generates a receive signal based the predetermined fixed signal applied to the transmit electrode. A controller monitors the receive signal to determine when a foreign object has been placed in proximity to the transmit assembly and/or the receive assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.