Patent ID: 9301045
Filing Date: 2016-03-29
CPC Classification: H01R,H04M,H04R

Claim Text:
1. A portable electronic device comprising: a jack constructed to receive a plug having a single prong and a plurality of signal conducting regions, wherein the jack includes a plurality of connectors which correspond at least to the plurality of signal conducting regions of the plug; a plug detection circuit electrically coupled to the jack, the plug detection circuit to detect receipt of the plug, and to provide a headset detect signal; and processing logic electrically coupled to the plug detection circuit, the processing logic to cause a bias power to be supplied to a transistor, the transistor to provide a microphone signal, the processing logic further to determine whether a microphone is coupled to one of the plurality of signal conducting regions of the plug by processing the headset detect signal and the microphone signal received from the transistor, wherein a microphone connector of the jack is to electrically couple the transistor to ground when a plug received at the jack does not have a microphone coupled to one of the plurality of signal conducting regions.