CN2819226Y - Earphone inserted tester - Google Patents
Earphone inserted tester Download PDFInfo
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- CN2819226Y CN2819226Y CN 200520114285 CN200520114285U CN2819226Y CN 2819226 Y CN2819226 Y CN 2819226Y CN 200520114285 CN200520114285 CN 200520114285 CN 200520114285 U CN200520114285 U CN 200520114285U CN 2819226 Y CN2819226 Y CN 2819226Y
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Abstract
The utility model discloses an earphone inserted tester comprising a receiving module and a judgment module, wherein the receiving module receives level output from a positive electrode of a microphone of an electronic device and outputs the level to the judgment module. When the judgment module tests that high level output from the positive electrode of the microphone of the electronic device is altered to the lower level, the judgment module judges that the earphone is inserted into the electronic device. The utility model which does not need increase special inserted terminals on the earphone is suitable for electronic equipment comprising two spring sheets; the utility model reduces cost, has strong versatility, improves the reliability in earphone insertion for testing and simultaneously improves the use and durability degree of an earphone socket. Further more, the receiving module can receive level output from an output pin of the microphone of the earphone socket of the electronic device and outputs the level to the judgment module. When the judgment module tests that high level output from the output pin of the microphone of the earphone socket of the electronic device is altered to the lower level, the judgment module judges that a button of the microphone of the earphone is pressed down; the use rang of the utility model is further expanded.
Description
Technical field
The utility model relates to insertable earphone detecting field, is specifically related to a kind of earphone and inserts pick-up unit.
Background technology
Earphone is the spare parts that electronic equipment disposed such as portable terminal, MP3, intercom.Fig. 1 is the circuit theory diagrams of syllogic interface earphone, and as shown in Figure 1, earphone mainly is made up of headset plug, ear microphone and earphone speaker three parts.Headset plug is divided into three sections from outside to inside, and electrode terminal MIC+, SPK+ are arranged respectively on each section, SPK-and GND, wherein, MIC+ connects the positive pole of ear microphone, SPK+ connects the positive pole of earphone speaker, and SPK-and GND are connected the common of ear microphone and earphone speaker respectively.In addition, the ear microphone two ends generally need decoupling capacitor C1 in parallel, oppositely suppress diode D1 and button S, and as can be seen: when button S presses, ear microphone will be shorted to GND.
Fig. 2 is the use synoptic diagram of existing syllogic earphone, and as shown in Figure 2, left end is the structural representation of headset plug, and the implication of each symbol is identical with Fig. 1 among the figure.Right-hand member is the simple synoptic diagram that can insert the electronic equipment of earphone, J1 among the figure represents the earphone socket of electronic equipment, wherein, pin 1:SPOUT represents the output of electronic equipment loudspeaker, pin 2:SPIN represents the input of electronic equipment loudspeaker, pin 3:MICIN represents the input of electronic equipment microphone, and pin 4:MICOUT represents the output of electronic equipment microphone, and pin 5:GND1 and pin 6:GND2 represent earth terminal AGND.Between the pin 1 and 2, a reed is respectively arranged between the pin 3 and 4, be used to insert the electrode terminal of headset plug.The just very RCV+ of the electronic equipment loudspeaker among the figure, negative pole are RCV-, and the just very MIC+ of electronic equipment microphone, negative pole are common ground end AGND.In addition, the pin 4 of J1 connects the 3.0V high level by resistance R 60, is connected with the electronic equipment master chip with capacitor C 54 by resistance R 9 simultaneously.
When headset plug inserted J1, the SPK+ terminal of earphone connected the pin 1 of J1, and the SPK-of earphone and GND terminal connect pin 5 and the pin 6 of J1 respectively, and the MIC+ terminal of earphone connects the pin 4 of J1.Like this, the input end of the input end of electronic equipment loudspeaker and electronic equipment microphone is unsettled, and promptly the path of the microphone of electronic equipment and loudspeaker disconnects, and the path of ear microphone and earphone speaker is connected.As can be seen: when headset plug did not insert J1, the electronic equipment loudspeaker was driven by the both-end of RCV+ and RCV-differential signal, and volume is bigger; And after headset plug inserts J1, because the SPK-terminal ground connection of headset plug, earphone speaker has become the single-ended drive of SPK+ signal, volume will reduce greatly, and, therefore, just can initiatively not adjust volume because portable terminal etc. self do not detect the function whether earphone inserts yet, can make that like this user's perceived sounds is very little after earphone inserts.
In order to realize detecting the function that earphone inserts, circuit theory diagrams have as shown in Figure 3 been provided, this figure at be the four-part form headset plug, the implication of each symbol is identical with Fig. 1, Fig. 2 among the figure, compare with Fig. 2, difference is: headset plug has increased by one section, and this section has special earphone to insert terminal PLUGIN; Simultaneously, the pin 5 on the earphone socket J1 of electronic equipment becomes earphone and inserts pin: PLUGIN, and has increased a reed between pin 5 and the pin 6, whether inserts J1 to be used to detecting headset plug PLUGIN.In addition, among this figure, the pin of J1 5 by resistance R 47 external high level a: 3.0V.
Concrete principle of work is as follows: when the PLUGIN on the headset plug does not insert between the pin 5 and 6 of J1, and the CHECK signal ground.After between the pin 5 and 6 of the PLUGIN of headset plug insertion J1, the pin 6 of J1 flicks, because by resistance R 47, the 3.0V high level carries out drawing on the noble potential to the CHECK signal, the CHECK signal shows as logic high.Therefore, when the CHECK signal became logic high by logic low, electronic equipment just thought that earphone inserts.In the practical application, according to the difference of physical circuit design, after headset plug inserted J1, the CHECK signal also might be to become logic low from logic high.
The shortcoming of this method is: needing on the headset plug increases special insertion terminal, and needs to increase special being used on the electronic equipment earphone socket and detect the reed whether earphone inserts, and it is relatively poor that this just makes that this earphone inserts the versatility of testing circuit; And because reed is many more, the unreliability of introducing can be big more, increased a reed on the earphone socket, and the reliability that just makes earphone insert detection reduces.
The utility model content
In view of this, fundamental purpose of the present utility model is to provide a kind of earphone to insert pick-up unit, and general to realize, reliable earphone inserts measuring ability.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of earphone inserts pick-up unit, and this device comprises: receiver module and judge module, wherein,
Receiver module: be used to receive the level of the positive pole output of electronic equipment microphone, and this level is outputed to judge module;
Judge module: be used to receive the anodal output level of the electronic equipment microphone of receiver module output, and when detecting this level and become low level, judge that earphone has inserted electronic equipment by high level.
Described receiver module comprises: first comparator circuit, wherein,
The negative input pin of first comparator circuit remains low level;
The positive input pin of first comparator circuit is used to connect the positive pole of electronic equipment microphone;
First comparator circuit outputs to judge module with the logic level of self output.
Described first comparator circuit is a level comparator.
The external power supply of described first comparator circuit is 3.0V,
The negative input pin level of described first comparator circuit is 0.75V, and the permission domain of walker is 0.5V～1.5V.
Described receiver module is further used for, and receives the level on the microphone output pin of the earphone socket on the electronic equipment, and this level is outputed to judge module;
Described judge module is further used for, and receives the level on the microphone output pin of the earphone socket on the electronic equipment of receiver module output, and when detecting this level and become low level by high level, judges that the button of ear microphone is pressed.
Described receiver module comprises: second comparator circuit, and the negative input pin of this circuit remains low level, and the positive input pin of this circuit is used to connect the microphone output pin of electronic equipment earphone socket; This circuit outputs to judge module with the logic level of self output.
Described second comparator circuit is a level comparator.
The external power supply of described second comparator circuit is 3.0V,
The negative input pin level of described second comparator circuit is 0.75V, and the permission domain of walker is 0.5V～1.5V.
Described judge module is a level detector.
Compared with prior art, device provided by the utility model comprises receiver module and judge module, and receiver module receives the anodal output level of the microphone of electronic equipment, and this level is outputed to judge module; When the positive pole output that detects the microphone of electronic equipment when judge module becomes low level by high level, judge that earphone has inserted electronic equipment.The utility model needn't increase special insertion terminal on earphone, and be applicable to the electronic equipment that only comprises two reeds, reduced cost, versatility is stronger, and improved earphone and inserted the reliability that detects, improved the use durability degree of electronic equipment earphone socket simultaneously.Further, receiver module can receive the output level of microphone output pin of the earphone socket of electronic equipment, and this level is outputed to judge module; When the output that detects the microphone output pin of electronic equipment earphone socket when judge module becomes low level by high level, judge that the button of ear microphone is pressed, further enlarged range of application of the present utility model.
Description of drawings
Fig. 1 is the circuit theory diagrams of syllogic interface earphone;
Fig. 2 is the use synoptic diagram of syllogic earphone;
Fig. 3 is the use synoptic diagram of four-part form earphone;
Fig. 4 inserts the fundamental diagram that detects for the realization earphone that the utility model provides;
The realization earphone that Fig. 5 provides for the utility model inserts the fundamental diagram of the specific embodiment that detects.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.
Fig. 4 inserts the fundamental diagram that detects for the realization earphone that the utility model provides, as shown in Figure 4, the utility model requires earphone and electronic equipment: headset plug comprises electrode terminal at least: is connected the terminal and the ground terminal of the terminal of ear microphone positive pole, the terminal that connects the earphone speaker positive pole, connection earphone speaker negative pole, the earphone socket on the electronic equipment is satisfied at least: between electronic equipment loudspeaker output pin and input pin, between electronic equipment microphone output pin and input pin a reed is arranged respectively.
If the implication of each symbol is identical with the implication of corresponding symbol among Fig. 2 in the electronic equipment among Fig. 4 and the headset plug, then:
When headset plug did not insert J1: the anodal MIC+ of electronic equipment microphone showed as high level owing to be subjected to the 3.0V high level by drawing on the resistance R 60, and level value is approximately 3.0V, the little level of interchange of additional electronic devices microphone output simultaneously.In like manner, the pin 4 of JI also shows as high level.
After headset plug inserted J1: the pin 3 of J1 was flicked, promptly this signal wire is unsettled, the pin 4 of J1 connects the anodal MIC+ of ear microphone, accept voice signal from ear microphone, at this moment since the MIC+ of electronic equipment broken away from 3.0V high level by R60 on draw, the electronic equipment microphone has lost bias level, its internal transistor does not act on, and being equivalent to like this provides level drop-down to the MIC+ of electronic equipment, so the MIC+ of electronic equipment transfers low level to from high level.
Therefore can learn: when the output of the MIC+ of electronic equipment becomes low level by high level, just illustrate that earphone inserts electronic equipment.
If press the button of ear microphone, the anodal MIC+ of ear microphone will be shorted to ground this moment, and the pin 4 of J1 is connected with the positive pole of ear microphone, so the pin 4 of J1 also is shorted to ground, shows as low level.
Therefore can learn: when the output of the pin 4 of JI becomes low level by high level, be pressed with regard to the button that ear microphone is described.
From the above mentioned, the earphone that the utility model provides inserts pick-up unit, mainly comprises:
Receiver module: be used to receive the positive pole of electronic equipment microphone, i.e. the output level of the MIC+ of electronic equipment among the figure, and this level outputed to judge module;
Further, this module is used to receive the microphone output pin of electronic equipment earphone socket JI, i.e. output level on the pin 4 of J1 among the figure, and this level outputed to judge module.
Judge module: whether the level that is used to judge the positive pole output of the electronic equipment microphone that receives becomes low level by high level, if, judge that earphone inserts, can send earphone to electronic equipment and insert trigger pip 0 this moment;
Electronic equipment just can have been adjusted volume after learning that earphone inserts automatically.
Further, this module is used to judge whether the level on the microphone output pin of the electronic equipment earphone socket that receives becomes low level by high level, if, judge that the microphone button of earphone is pressed, can press trigger pip 1 this moment to the button that electronic equipment sends ear microphone.
High level refers to the level of the power supply of electronic equipment internal, and the utility model middle finger 3.0V allows to float 0.5V downwards, and low level refers to 0V, allows upwards to float 0.5V equally.
Fig. 5 is the fundamental diagram that the realization earphone that provides of the utility model inserts the specific embodiment that detects, and as shown in Figure 5, receiver module comprises: first comparator circuit, wherein,
The negative input pin of first comparator circuit, promptly the level of the pin among the figure 2 remains low level.
Concrete level value is by the level decision of the power supply of first comparator circuit, and usually, the power supply level is 3.0V, at this moment, and the arbitrary value among the desirable 0.5V～2.5V of level of the pin 2 of first comparator circuit.The utility model is got 0.75V, and the permission domain of walker is 0.5V～1.5V;
The positive input pin of first comparator circuit i.e. pin 3 among the figure, is used for the positive pole with the electronic equipment microphone, and promptly the MIC+ of electronic equipment connects among the figure.
The positive pole of first comparator circuit, promptly the pin among the figure 8 connects the power supply level, gets 3.0V in the utility model, and negative pole meets common AGND.
First comparator circuit outputs to judge module with the logic level of self output, when the logic level that detects first comparator circuit output when judge module becomes logic low by logic high, judge that earphone has inserted electronic equipment, can send earphone to electronic equipment and insert trigger pip 0 this moment.
Further, receiver module comprises: second comparator circuit, wherein,
The negative input pin of this circuit, promptly the pin among the figure 6 remains low level.
Concrete level value is by the level decision of the power supply of second comparator circuit, and usually, the power supply level is 3.0V, at this moment, and the arbitrary value among the desirable 0.5V～2.5V of level of the pin 6 of second comparator circuit.The utility model is got 0.75V, and the permission domain of walker is 0.5V～1.5V;
The positive input pin of this circuit i.e. pin 5 among the figure, is used for the output pin with the microphone of electronic equipment earphone socket, and promptly the pin 4 of J1 connects among the figure.
The positive pole of second comparator circuit, promptly the pin among the figure 8 connects the power supply level, gets 3.0V in the utility model, and negative pole meets common AGND.
Second comparator circuit outputs to judge module with the logic level of self output, when the logic level that detects second comparator circuit output when judge module becomes logic low by logic high, judge that the button of ear microphone presses, can press trigger pip 1 this moment to the button that electronic equipment sends ear microphone.
If the implication of each symbol is identical with the implication of corresponding symbol among Fig. 4 in the electronic equipment among Fig. 5 and the headset plug, as shown in Figure 5, the principle of work of this specific embodiment is as follows:
When headset plug did not insert J1: the pin 3 of first comparator circuit was owing to be subjected to the 3.0V high level by drawing on the resistance R 60, show as high level, level value is approximately 3.0V, the little level of interchange of the anodal MIC+ output of additional electronic devices microphone simultaneously, and because the clamping of pin 2 is 0.75V, therefore, the level of pin 3 is greater than the level of pin 2, then first comparator circuit output, promptly pin 1 shows as logic high.In like manner, the output of second comparator circuit, promptly pin 7 also shows as logic high.
After headset plug inserted J1: the pin 3 of J1 was flicked, promptly this signal wire is unsettled, the pin 4 of J1 connects the anodal MIC+ of ear microphone, accept voice signal from ear microphone, at this moment, because the pin 3 of first comparator circuit has broken away from by drawing on the 3.0V high level of R60, the electronic equipment microphone has lost bias level, its internal transistor does not act on, being equivalent to like this provides level drop-down to the pin 3 of first comparator circuit, so the pin 3 of first comparator circuit transfers low level to from high level, the level of pin 3 is less than the level of pin 2 as a result, the output of first comparator circuit, promptly pin 1 shows as logic low.
Therefore, can detect the variation of the first comparator circuit output logic level, become logic low by logic high, just illustrate that earphone inserts electronic equipment if detect the output of first comparator circuit by the judge module among the figure.
If press the button of ear microphone, the anodal MIC+ of ear microphone is shorted to ground, then the pin 4 of J1 also is shorted to ground, the pin 5 of second comparator circuit also is shorted to ground, the level of pin 5 is less than the level of pin 6, the output of second comparator circuit, promptly pin 7 shows as logic low.
Therefore, can detect the variation of the second comparator circuit output logic level equally, become logic low by logic high, be pressed with regard to the button that ear microphone is described if detect the output of second comparator circuit by the judge module among the figure.
Particularly, first comparator circuit and second comparator circuit are respectively level comparator, and judge module is a level detector.
It must be noted that the earphone that the utility model proposes inserts pick-up unit and can be independent of outside the electronic equipment, also can be embedded among the electronic equipment.
The above only is process of the present utility model and method embodiment; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1, a kind of earphone inserts pick-up unit, it is characterized in that this device comprises: receiver module and judge module, wherein,
Receiver module: be used to receive the level of the positive pole output of electronic equipment microphone, and this level is outputed to judge module;
Judge module: be used to receive the anodal output level of the electronic equipment microphone of receiver module output, and when detecting this level and become low level, judge that earphone has inserted electronic equipment by high level.
2, device as claimed in claim 1 is characterized in that, described receiver module comprises: first comparator circuit, wherein,
The negative input pin of first comparator circuit remains low level;
The positive input pin of first comparator circuit is used to connect the positive pole of electronic equipment microphone;
First comparator circuit outputs to judge module with the logic level of self output.
3, device as claimed in claim 2 is characterized in that, described first comparator circuit is a level comparator.
As claim 2 or 3 described devices, it is characterized in that 4, the external power supply of described first comparator circuit is 3.0V,
The negative input pin level of described first comparator circuit is 0.75V, and the permission domain of walker is 0.5V～1.5V.
5, device as claimed in claim 1 is characterized in that, described receiver module is further used for, and receives the level on the microphone output pin of the earphone socket on the electronic equipment, and this level is outputed to judge module;
Described judge module is further used for, and receives the level on the microphone output pin of the earphone socket on the electronic equipment of receiver module output, and when detecting this level and become low level by high level, judges that the button of ear microphone is pressed.
6, device as claimed in claim 5, it is characterized in that, described receiver module comprises: second comparator circuit, and the negative input pin of this circuit remains low level, and the positive input pin of this circuit is used to connect the microphone output pin of electronic equipment earphone socket; This circuit outputs to judge module with the logic level of self output.
7, device as claimed in claim 6 is characterized in that, described second comparator circuit is a level comparator.
As claim 6 or 7 described devices, it is characterized in that 8, the external power supply of described second comparator circuit is 3.0V,
The negative input pin level of described second comparator circuit is 0.75V, and the permission domain of walker is 0.5V～1.5V.
9, device as claimed in claim 1 is characterized in that, described judge module is a level detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114285 CN2819226Y (en) | 2005-07-22 | 2005-07-22 | Earphone inserted tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114285 CN2819226Y (en) | 2005-07-22 | 2005-07-22 | Earphone inserted tester |
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| CN2819226Y true CN2819226Y (en) | 2006-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520114285 Expired - Lifetime CN2819226Y (en) | 2005-07-22 | 2005-07-22 | Earphone inserted tester |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148683A1 (en) * | 2009-12-25 | 2010-12-29 | 中兴通讯股份有限公司 | Microphone button earphone and state identifying method thereof |
| CN101950867A (en) * | 2010-07-21 | 2011-01-19 | 惠州Tcl移动通信有限公司 | Earphone socket and mobile terminal thereof |
| CN102740180A (en) * | 2011-04-01 | 2012-10-17 | 富泰华工业（深圳）有限公司 | Broadcasting method used in broadcasting apparatus |
| CN102892059A (en) * | 2011-07-22 | 2013-01-23 | 飞兆半导体公司 | Detection and GSM noise filtering |
| CN103037282A (en) * | 2012-11-29 | 2013-04-10 | 深圳Tcl新技术有限公司 | Wireless speaker box system |
| CN103517181A (en) * | 2012-06-15 | 2014-01-15 | 国基电子（上海）有限公司 | Electronic device and headset |
| CN103686535A (en) * | 2013-12-02 | 2014-03-26 | Tcl集团股份有限公司 | Terminal capable of automatically recognizing headset microphone and karaoke devices, and recognition method thereof |
| CN104105046A (en) * | 2013-04-09 | 2014-10-15 | 宏碁股份有限公司 | Detection circuit |
| CN104683916A (en) * | 2013-12-02 | 2015-06-03 | 纬创资通股份有限公司 | Circuit and method for detecting pins of microphone |
| WO2016161596A1 (en) * | 2015-04-09 | 2016-10-13 | 华为技术有限公司 | Audio connector recognition method and portable electronic device |
| CN106412760A (en) * | 2015-07-30 | 2017-02-15 | 成都鼎桥通信技术有限公司 | Earphone compatible apparatus |
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2005
- 2005-07-22 CN CN 200520114285 patent/CN2819226Y/en not_active Expired - Lifetime
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148683A1 (en) * | 2009-12-25 | 2010-12-29 | 中兴通讯股份有限公司 | Microphone button earphone and state identifying method thereof |
| CN101950867B (en) * | 2010-07-21 | 2012-12-19 | 惠州Tcl移动通信有限公司 | Earphone socket and mobile terminal thereof |
| CN101950867A (en) * | 2010-07-21 | 2011-01-19 | 惠州Tcl移动通信有限公司 | Earphone socket and mobile terminal thereof |
| CN102740180A (en) * | 2011-04-01 | 2012-10-17 | 富泰华工业（深圳）有限公司 | Broadcasting method used in broadcasting apparatus |
| TWI577143B (en) * | 2011-07-22 | 2017-04-01 | 菲爾卻德半導體公司 | Detection and gsm noise filtering |
| CN102892061A (en) * | 2011-07-22 | 2013-01-23 | 飞兆半导体公司 | Circuit and method for MIC audio noise filtering |
| CN102892059A (en) * | 2011-07-22 | 2013-01-23 | 飞兆半导体公司 | Detection and GSM noise filtering |
| US9591421B2 (en) | 2011-07-22 | 2017-03-07 | Fairchild Semiconductor Corporation | Audio jack detection circuit |
| US9497559B2 (en) | 2011-07-22 | 2016-11-15 | Fairchild Semiconductor Corporation | MIC/GND detection and automatic switch |
| US9294857B2 (en) | 2011-07-22 | 2016-03-22 | Fairchild Semiconductor Corporation | Detection and GSM noise filtering |
| US9432786B2 (en) | 2011-07-22 | 2016-08-30 | Fairchild Semiconductor Corporation | MIC audio noise filtering |
| CN102892059B (en) * | 2011-07-22 | 2016-09-14 | 飞兆半导体公司 | GSM noise detecting circuit and method |
| CN102892061B (en) * | 2011-07-22 | 2016-10-12 | 飞兆半导体公司 | Circuit and method for the filtering of MIC audio-frequency noise |
| CN103517181A (en) * | 2012-06-15 | 2014-01-15 | 国基电子（上海）有限公司 | Electronic device and headset |
| CN103517181B (en) * | 2012-06-15 | 2016-11-02 | 国基电子（上海）有限公司 | Electronic installation and headset |
| CN103037282A (en) * | 2012-11-29 | 2013-04-10 | 深圳Tcl新技术有限公司 | Wireless speaker box system |
| CN103037282B (en) * | 2012-11-29 | 2017-11-03 | 深圳Tcl新技术有限公司 | A kind of wireless sound box system |
| CN104105046A (en) * | 2013-04-09 | 2014-10-15 | 宏碁股份有限公司 | Detection circuit |
| CN104105046B (en) * | 2013-04-09 | 2018-03-27 | 宏碁股份有限公司 | Detect circuit |
| CN104683916A (en) * | 2013-12-02 | 2015-06-03 | 纬创资通股份有限公司 | Circuit and method for detecting pins of microphone |
| CN103686535A (en) * | 2013-12-02 | 2014-03-26 | Tcl集团股份有限公司 | Terminal capable of automatically recognizing headset microphone and karaoke devices, and recognition method thereof |
| CN103686535B (en) * | 2013-12-02 | 2017-11-10 | Tcl集团股份有限公司 | The terminal and recognition methods of automatic identification ear microphone and karaoke equipment |
| CN104683916B (en) * | 2013-12-02 | 2018-02-06 | 纬创资通股份有限公司 | Circuit and method for detecting pins of microphone |
| WO2016161596A1 (en) * | 2015-04-09 | 2016-10-13 | 华为技术有限公司 | Audio connector recognition method and portable electronic device |
| CN106412760A (en) * | 2015-07-30 | 2017-02-15 | 成都鼎桥通信技术有限公司 | Earphone compatible apparatus |
| CN106412760B (en) * | 2015-07-30 | 2019-02-01 | 成都鼎桥通信技术有限公司 | Earphone compatible device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
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