Earphone jack and earphone interface circuit and electronic device

An earphone interface circuit, comprising:

• a first earphone jack receiving a right audio channel signal and a left audio channel signal and defining a first connecting hole for receiving a first earphone plug and outputting a first electrical signal when the first earphone plug is not received in the first connecting hole, wherein the first earphone jack comprises a first anti-interference unit that prevents crosstalk between the right audio channel signal and the left audio channel signal;
• a second earphone jack receiving the right audio channel signal and the left audio channel signal and defining a second connecting hole for receiving a second earphone plug and outputting a second electrical signal when the second earphone plug is not received in the second connecting hole, wherein the second earphone jack comprises a second anti-interference unit that prevents crosstalk between the right audio channel signal and the left audio channel signal;
• and
• a gate circuit comprising a first input terminal connected to the first earphone jack, a second input terminal connected to the second earphone jack, and an output terminal, wherein the output terminal of the gate circuit outputs a third electrical signal for indicating that the first earphone plug is not plugged into the first earphone jack and the second earphone plug is not plugged into the second earphone jack when the first input terminal receives the first electrical signal and the second input terminal receives the second electrical signal.

An electronic device, comprising:

• an audio circuit providing a left audio channel signal and a right audio channel signal;
• a first earphone jack receiving the right audio channel signal and the left audio channel signal and defining a first connecting hole for receiving a first earphone plug and Page 11 of 16 outputting a first electrical signal when the first earphone plug is not received in the first connecting hole, wherein the first earphone jack comprises a first anti-interference unit that prevents crosstalk between the right audio channel signal and the left audio channel signal;
• a second earphone jack receiving the right audio channel signal and the left audio channel signal and defining a second connecting hole for receiving a second earphone plug and outputting a second electrical signal when the second earphone plug is not received in the second connecting hole, wherein the second earphone jack comprises a second anti-interference unit that prevents crosstalk between the right audio channel signal and the left audio channel signal;
• and
• a gate circuit comprising a first input terminal connected to the first earphone jack, a second input terminal connected to the second earphone jack, and an output terminal, wherein the output terminal of the gate circuit outputs a third electrical signal for indicating that the first earphone plug is not plugged into the first earphone jack and the second earphone plug is not plugged into the second earphone jack when the first input terminal receives the first electrical signal and the second input terminal receives the second electrical signal.