Patent ID: 9532137
Filing Date: 2016-12-27
CPC Classification: H03H,H04M,H04R

Claim Text:
1. A method for matching with an audio interface of a mobile terminal, the audio interface of the mobile terminal comprising a first pin, a second pin and a third pin, the first pin being one of a microphone pin and a ground pin, the second pin being the other one of the microphone pin and the ground pin, and the third pin being a single-channel audio output pin or one of multichannel audio output pins, wherein the method comprises following steps: connecting the third pin with the first pin via a first circuit, in which the first circuit comprises a first unidirectional conduction module having a current direction of flowing to the first pin; connecting the third pin with the second pin via a second circuit, in which the second circuit comprises a second unidirectional conduction module having a current direction of flowing to the second pin; controlling the first unidirectional conduction module to turn on such that the third pin and the first pin form a first loop having an impedance matched with an identification resistance of the mobile terminal; and controlling the second unidirectional conduction module to turn on such that the third pin and the second pin form a second loop having an impedance matched with the identification resistance of the mobile terminal.