Ear jack recognition method and electronic device supporting the same

1. An electronic device connected to an earphone, comprising:

a connector into which an ear jack of the earphone is inserted;

an audio controller configured to process an acoustic signal;

a processor configured to control the audio controller; and

a memory configured to functionally connect with the processor,

wherein the audio controller outputs a first acoustic signal through an ear speaker of the earphone, if an insertion interruption occurs according to insertion of the ear jack, and wherein the processor determines a type of the ear jack according to a second acoustic signal collected through an ear microphone included in the earphone.

2. The electronic device of claim 1 , wherein the processor compares the first acoustic signal previously stored in the memory with the second acoustic signal and determines the type of the ear jack according to the compared result.

3. The electronic device of claim 1 , further comprising:

a main speaker,

wherein the audio controller outputs the first acoustic signal through at least one of the ear speaker or the main speaker.

4. The electronic device of claim 1 , further comprising:

a main microphone,

wherein the processor determines the type of the ear jack according to at least one of the second acoustic signal collected through the ear microphone or a third acoustic signal collected through the main microphone.

5. The electronic device of claim 4 , wherein the main microphone collects a noise signal around the electronic device,

wherein the audio controller cancels the collected noise signal from the second acoustic signal.

6. The electronic device of claim 5 , wherein the audio controller receives a feedback on the second acoustic signal in which the noise signal is canceled.

7. The electronic device of claim 4 , wherein the processor compares the second acoustic signal with the third acoustic signal and determines the type of the ear jack according to the compared result.

8. The electronic device of claim 4 , wherein the main microphone collects the first acoustic signal output from the main speaker, and

wherein the ear microphone collects the first acoustic signal output from the ear speaker.

9. The electronic device of claim 1 , wherein the first acoustic signal is an inaudible signal or an audible signal of a predetermined frequency or less.

10. The electronic device of claim 1 , wherein the ear jack has one of a form of a three-pole terminal including a ground terminal, a right output terminal, and a left output terminal and a form of a four-pole terminal including a microphone terminal, a ground terminal, a right speaker terminal, and a left speaker terminal.

11. The electronic device of claim 1 , wherein the first acoustic signal is repeatedly output at time intervals.

12. A method of operating an ear jack recognition in an electronic device, the method comprising:

outputting a first acoustic signal, if an insertion interruption of an ear jack connected to an earphone occurs; and

determining a type of the ear jack according to a second acoustic signal collected through an ear microphone of the earphone in response to the first acoustic signal.

13. The method of claim 12 , wherein the determining of the type of the ear jack comprises:

comparing the first acoustic signal previously stored in a memory with the second acoustic signal; and

determining the type of the ear jack according to the compared result.

14. The method of claim 12 , wherein the outputting of the first acoustic signal comprises:

outputting the first acoustic signal through at least one of an ear speaker of the earphone or a main speaker of the electronic device.

15. The method of claim 12 , wherein the determining of the type of the ear jack comprises:

collecting the second acoustic signal through the ear microphone;

collecting a third acoustic signal through a main microphone of the electronic device; and

determining the type of the ear jack according to at least one of the second acoustic signal or the third acoustic signal.

16. The method of claim 15 , wherein the determining of the type of the ear jack comprises:

collecting a noise signal around the electronic device through the main microphone; and

canceling the collected noise signal from the second acoustic signal.

17. The method of claim 16 , wherein the canceling of the collected noise signal comprises:

receiving a feedback on the second acoustic signal, in which the noise signal is canceled, through an adaptive filter.

18. The method of claim 15 , wherein the determining of the type of the ear jack comprises:

comparing the second acoustic signal with the third acoustic signal.

19. The method of claim 18 , wherein the comparing of the second acoustic signal with the third acoustic signal comprises:

collecting the first acoustic signal output from a main speaker of the electronic device through the main microphone; and

collecting the first acoustic signal output from an ear speaker of the earphone through the ear microphone.

20. The method of claim 12 , wherein the first acoustic signal is an inaudible signal or an audible signal of a predetermined frequency or less.