Electronic device utilizing impedance and/or resistance identification to identify an accessory device
US7948246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device and method for identifying an accessory device connected to a first port and a second port of an electronic device by determining an impedance of the accessory device across the first port and the second port is provided. The electronic device generally includes a first port (e.g. a universal serial bus) configured to receive a first connector from an associated accessory device and a second port (e.g. an audio port) configured to receive a second connector from the associated accessory device. The electronic device includes circuitry coupled to the first port and the second port for determining an impedance associated with the accessory device as measured across the first port and the second port. An identification of the accessory device is then made based on the impedance of the electronic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.