Architectures for detecting USB type-C device exposure to liquids
US12045111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2022 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Jan 27, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0042
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system includes a USB-C receptacle including first and second non-GPIO pins and a USB-C controller including a first GPIO pin connected to a pull-up resistor and a second GPIO pin connected to a pull-down resistor, a pair of non-GPIO pins including a third non-GPIO pin corresponding to the first non-GPIO pin and a fourth non-GPIO pin corresponding to the second non-GPIO pin. The pair of GPIO pins is selectively connectable to the pair of non-GPIO pins using a multiplexer, and liquid exposure detection circuitry configured to cause a first voltage for the first GPIO and a second voltage for the second GPIO to be measured, determine whether the first and second voltages each satisfy a threshold condition, and in response to determining that the first and second voltages each do not satisfy the threshold condition, cause operation of the USB-C receptacle to be suspended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.