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Earphone interface circuit and mobile communication device

A headphone interface and circuit technology, applied in the field of mobile terminals, can solve problems such as inconsistent definitions of 1-pin and 2-pin, user inconvenience, and impact on user experience, etc.

Active Publication Date: 2012-12-19
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the two standard headphone plugs have the same size, the definitions of pin 1 and pin 2 are not uniform
However, mobile communication devices in the prior art can only identify earphones using one of the standards, which brings inconvenience to users and affects user experience.

Method used

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  • Earphone interface circuit and mobile communication device
  • Earphone interface circuit and mobile communication device
  • Earphone interface circuit and mobile communication device

Examples

Experimental program
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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] see figure 2 , figure 2 It is a circuit schematic diagram of an embodiment of the earphone interface circuit of the present invention. The earphone interface circuit includes: an earphone jack 10 and an identification module 20 . For clarity, the earphone plug 40 is also shown in the figure. The earphone plug 40 includes a first end 401 , a second end 402 , a third end 403 and a fourth end 404 . When the earphone plug 40 is a European standard earphone plug, the first end 401 is the GND end, the second end 402 is the MIC end, and the third end 403 is one of the left channel signal output end or the right channel signal output end, The fourth terminal 404 is the other one of the left channel signal output terminal or the right channel signal output terminal. When the earphone plug 40 is an American standard earphone plug, the first end 40...

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Abstract

The invention discloses an earphone interface circuit, which comprises an earphone jack and an identification module. The earphone jack comprises a first metal contact part, a second metal contact part and a third metal contact part. The third metal contact part is connected with an European standard earphone plug which is plugged into the earphone jack or one of a left-channel signal output end and a right-channel signal output end of an American-standard earphone plug; and the identification module is connected with the third metal contact part, and the earphone plug which is plugged into the earphone jack is judged to be the European-standard earphone plug or the American-standard earphone plug according to a voltage value of the third metal contact part. The invention also discloses a mobile communication device. Through the earphone interface circuit and the mobile communication device, the European-standard earphone and the American-standard earphone can be identified.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to an earphone interface circuit and mobile communication equipment. Background technique [0002] With the development of electronic technology, mobile communication equipment has been widely used in every corner of modern life, and has become an indispensable tool in life and work. As an indispensable accessory on mobile communication equipment, earphones are used for listening to music and answering calls. Waiting for convenience. [0003] However, there are currently two standards for earphones on the market: American-standard earphones adopting American standards and European-standard earphones adopting European standards. figure 1 It is a structural schematic diagram of an earphone plug in the prior art. when figure 1 When the middle earphone plug is an American standard earphone plug, pin 1 is MIC and pin 2 is GND; figure 1 When the middle earphone plug is a Euro...

Claims

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Application Information

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IPC IPC(8): H04R3/00H04R1/10
Inventor 杨金华
Owner HUIZHOU TCL MOBILE COMM CO LTD
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