Apparatus and method for accessory detection in a portable communication device
US10554237B1 · kind B1 · utility
2Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Jun 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable battery operated communication device provides a device interface formed of a plurality of exposed device contacts including a live voltage contact and a GND contact. Electronic circuitry associated with the interface is configured to operate in a non-linear mode using a low leakage path in response to electrolytic contamination across the two contacts. The interface is further configured to operate in a linear mode using a low current path during accessory attachment. Accessory detection is provided by a non-linear impedance device and sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.