AUDIO PATH CONNECTION DEVICE IN MOBILE COMMUNICATION TERMINAL USING EAR MICROPHONE

摘要

PURPOSE: An audio path connection device in a mobile communication terminal using an ear microphone is provided to reduce a volume of an ear microphone connection part of the mobile communication terminal. CONSTITUTION: According to the audio path connection device of a mobile communication terminal capable of processing an audio signal by accessing to the ear microphone, an ear microphone connection part(340) has two ports to transfer the first audio signal to a speaker of an ear microphone and two ports receiving the second audio signal from a microphone of the ear microphone. An audio connection part(350) are constituted with two ports to transfer the first audio signal to a receiver speaker and two ports receiving the third audio signal from a transmitter microphone comprised in the mobile communication terminal. An analog switching part(360) sets a path between a digital signal processing connection part(320) and the ear microphone connection part, or sets a path between the digital signal processing connection part and the audio connection part. An ear microphone sensing part(310) outputs a sensing signal by sensing the connection of the ear microphone. And an analog switching control part(330) outputs a control signal to control the analog switching part to transmit/receive an audio signal between the digital signal processing connection part and the ear microphone connection part, or between the digital signal processing connection part and the audio connection part.