Patent ID: 8111841
Filing Date: 2012-02-07
Classification: G06F,H04R

Abstract:
1. An audio input/output device for use in combination with a headset for accurate voice recognition in high noise environment, the audio input/output device comprising: a 4-pin audio jack comprising a 4-pin audio interface for connection of a plug of the headset and a detection pin to recognize the connection of the headset, the 4-pin audio interface including a voice input, an external noise input, and a speaker output for feeding back the voice input; an audio CODEC having a voice input terminal, an external noise input terminal, and a speaker output terminal corresponding to the voice input, the external noise input, and the speaker output, respectively; a selector switch for turning ON and OFF an input of a fourth-pin signal from the external noise input to the external noise input of the audio CODEC; and a control unit for controlling the selector switch, wherein the control unit turns the selector switch ON only upon the use of the headset being selected, wherein, upon the audio CODEC receiving a headset recognition signal from the detection pin, the audio CODEC performs processing to increase volume of the speaker output controlled by the audio CODEC within a predetermined range, and wherein the control unit turns the selector switch ON and outputs a command to the audio CODEC to increase the volume of the speaker output according to a magnitude of a noise from the external noise input, only upon the use of the headset.