Patent ID: 9161124
Filing Date: 2015-10-13
Classification: H04M,H04R

Abstract:
1. A method for determining headset line sequence, wherein a headset comprises a headset plug and a headset line, one end of the headset plug is connected to the headset line of the headset, the headset plug is disposed with a first pin, a second pin, a third pin and a fourth pin sequentially from the other end of the headset plug to the one end connected to the headset line, a signal type of a signal transmitted by the first pin is a left sound channel signal, a signal type of a signal transmitted by the second pin is a right sound channel signal, wherein one of the third pin and the fourth pin are connected to a direct-current power supply to form a power supply branch, a bias resistor is connected onto the power supply branch in series, and a voltage of the direct-current power supply is a first voltage, the method comprising: obtaining a second voltage between the third pin and the fourth pin, wherein the second voltage is a voltage obtained after dividing the first voltage, and the second voltage comprises a measured voltage across a diode placed in parallel across the third pin and the fourth pin; comparing the obtained second voltage with a preset first threshold, and generating a comparison result; and according to the comparison result, determining a signal type of a signal transmitted by the third pin and a signal type of a signal transmitted by the fourth pin.