Patent ID: 9167332
Filing Date: 2015-10-20
Classification: H04R

Abstract:
1. A portable electronic device connected with an external electronic device, for measuring electric current of the external electronic device, the portable electronic device comprising: an earphone jack; a detecting circuit, connected to the earphone jack and configured to detect whether the earphone jack is connected to the external electronic device, and receive electric current signals from the external electronic device; a control circuit, connected to the detecting circuit, for generating a first control signal when the detecting circuit detects that the earphone jack is connected to a headset, and generating a second control signal when the detecting circuit detects that the earphone jack is connected to the external electronic device; an audio processing circuit comprising an audio processing channel and a signal passing channel, wherein the audio processing channel processes the sound signals from or to the headset via the earphone jack, and the signal passing channel directly passes the electric current signals from the external electronic device; a switch circuit, with one end connected to the control circuit, another end switchably connected to one of the audio processing channel and the signal passing channel, for switching to the audio processing channel when the control circuit generates the first control signal, and switching to the signal passing channel a when the control circuit generates the second control signal; and an application module, connected to the signal passing channel, for implementing a software to measure the electric current signals from the external electronic device.