Interference detection
US10394386B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2018 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jun 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An input device associated with a sensing region is disclosed. The input device includes: a sensor electrode configured to receive a resulting signal associated with the sensing region; a current conveyor configured to generate a first replica of the resulting signal; a mixer circuit configured to generate a differential current by demodulating the first replica of the resulting signal; an interference detection circuit (IDC) configured to: generate a second replica of the resulting signal based on the first replica; determine the second replica includes an interference signal based on a reference current; and generate an interference alert signal in response to determining the second replica includes the interference signal; and an auxiliary component configured to generate an output based on the differential current and the interference alert signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.