Connection and corrosion detection
US10184909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2016 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Nov 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R2201/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, structures, and apparatus that are able to detect the presence of a connection to a device contact of an electronic device and are also able to detect the presence of contamination at the device contact. A host device includes a connection detection circuit and a contamination detection circuit connected to the device contact. The connection detection circuit includes a pull-up resistor that is pulled down by a pull-down resistor in an accessory device following a connection. The contamination detection circuit includes a current source to provide a current at the device contact and measurement circuitry to measure a resulting voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.