CN202873030U - Device capable of automatically identifying microphone pin and ground pin of audio interface, and auto-sign tool - Google Patents
Device capable of automatically identifying microphone pin and ground pin of audio interface, and auto-sign tool Download PDFInfo
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- CN202873030U CN202873030U CN 201220385214 CN201220385214U CN202873030U CN 202873030 U CN202873030 U CN 202873030U CN 201220385214 CN201220385214 CN 201220385214 CN 201220385214 U CN201220385214 U CN 201220385214U CN 202873030 U CN202873030 U CN 202873030U
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- pin
- audio interface
- mike
- measurement module
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Abstract
The utility model provides a device capable of automatically identifying a microphone pin and a ground pin of an audio interface, and an electronic auto-sign tool. The device comprises a first measuring module and a second measuring module. The first measuring module is connected with a first pin of the audio interface to detect voltages or currents of the first pin. The second measuring module is connected with a second pin of the audio interface to detect voltages or currents of the second pin. If the voltages or currents detected by the first measuring module are higher than the voltages or currents detected by the second measuring module, the first pin is determined to be the microphone pin and the second pin is determined to be the ground pin, otherwise, the first pin is determined to be the ground pin and the second pin is determined to be the microphone pin. According to the device, types of the audio interface can be determined simply based on output voltages or currents of the first pin and the second pin, so that the device is capable of, with low cost, automatically and accurately detecting the types of the audio interface, and is convenient for later use.
Description
Technical field
The utility model relates to electronic technology field, particularly device and the electric signing tools of a kind of Mike's pin of automatic identification audio interface and ground pin.
Background technology
Existing audio signal transmitting apparatus (for example, mobile communication terminal) audio interface (for example earphone jack) and the audio signal receiving equipment (for example, electric signing tools, the audio signal interconnecting device, and other receives the also audio signal receiving equipment of audio signal by the audio frequency output pin) audio interface generally adopt the four-part form interface, wherein, three-prong and the 4th pin are the audio frequency output pin, i.e. L channel pin and R channel pin.But, the first pin of different audio interface is different with the effect of the second pin, and having the first pin is Mike's pin MIC, and the second pin is ground pin GND, and first pin be ground pin GND, the second pin is the audio interface of two types of Mike's pin MIC.
Owing to there is an above-mentioned dissimilar audio interface, when the type of the audio interface of the audio interface of audio signal transmitting apparatus and audio signal receiving equipment is not mated, can't proper communication between audio signal transmitting apparatus and the audio signal receiving equipment.
Therefore, no matter be the audio signal receiving equipment that the needs design can be correct adaptive from the audio signal transmitting apparatus of different audio interface, or whether the prompting user audio interface mates in having the audio signal receiving equipment of voice or character prompting function, which kind of type at first all need to realize the identification of audio interface type in the audio signal receiving equipment, be in order to identify the audio interface of current connected audio signal transmitting apparatus.
Therefore, need a kind of device that can automatically identify audio interface type.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least.
For this reason, a purpose of the present utility model is to propose a kind of Mike's pin of automatic identification audio interface and the device of ground pin.
Another purpose of the present utility model is to propose a kind of electric signing tools.
To achieve these goals, the embodiment of the utility model first aspect has proposed a kind of Mike's pin of automatic identification audio interface and the device of ground pin, described audio interface comprises the first pin and the second pin, in the pin one of Mike's pin that described the first pin is described audio interface and ground, in Mike's pin that described the second pin is described audio interface and the ground pin another, the device of Mike's pin of described automatic identification audio interface and ground pin comprises: the first measurement module, and the first pin of described the first measurement module and described audio interface is coupled to detect voltage or the electric current of described the first pin; And second measurement module, the second pin of described the second measurement module and described audio interface is coupled to detect voltage or the electric current of described the second pin; Wherein, when the voltage that the voltage that detects when described the first measurement module or electric current detect greater than described the second measurement module or electric current, judge that described the first pin is Mike's pin, described the second pin is the ground pin; When the voltage that the voltage that detects when described the first measurement module or electric current detect less than described the second measurement module or electric current, judge that described the first pin is the ground pin, described the second pin is Mike's pin.
In addition, can also have following additional technical characterictic according to Mike's pin of the above-mentioned automatic identification audio interface of the utility model and the device of ground pin:
Automatically identify Mike's pin of audio interface and the device of ground pin, also comprise: first interface and the second interface, wherein, described the first measurement module by one in described first interface and described the second interface with the coupling of the first pin of described audio interface, described the second measurement module is coupled by the second pin of another and described audio interface in described first interface and described the second interface.
Described the first measurement module further comprises: the first resistance, the first pin coupling of an end of described the first resistance and described audio interface and the other end and ground coupling; And first voltage detector, described the first voltage detector is in parallel with described the first resistance.
Described the first measurement module further comprises: the 3rd resistance, the first pin coupling of an end of described the 3rd resistance and described audio interface and the other end and ground coupling; And first current detector, described the first current detector is connected with described the 3rd resistance.
Described the second measurement module further comprises: the second resistance, the second pin coupling of an end of described the second resistance and described audio interface and the other end and described the coupling; And the second voltage detector, described second voltage detector is in parallel with described the second resistance.
Described the second measurement module further comprises: the 4th resistance, the second pin coupling of an end of described the 4th resistance and described audio interface and the other end and described the coupling; And second current detector, described the second current detector is connected with described the 4th resistance.
Described the first voltage detector and described second voltage detector are voltmeter.
Described the first current detector and described the second current detector are ammeter.
The embodiment of the utility model second aspect has proposed a kind of electric signing tools, comprises Mike's pin of above-mentioned automatic identification audio interface and the device of ground pin.
Device and the electric signing tools of Mike's pin of automatic identification audio interface of the present utility model and ground pin, only need according to the output voltage of the first pin and the second pin or the size of output current, namely can judge the type of audio interface, thereby can automatically also accurately detect with lower cost the type of audio interface, convenient follow-up use.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is Mike's pin of automatic identification audio interface of an embodiment of the utility model and the schematic diagram of device of ground pin;
Fig. 2 is Mike's pin of automatic identification audio interface of another embodiment of the utility model and the schematic diagram of device of ground pin; And
Fig. 3 is Mike's pin of automatic identification audio interface of another embodiment of the utility model and the schematic diagram of device of ground pin.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center "; " vertically "; " laterally "; " on "; D score; " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only be for convenience of description the utility model and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or quantity or position, further, " the first pin ", " the second pin " only are that pin is distinguished, and are not used in the position that limits pin.
In description of the present utility model, need to prove that unless clear and definite regulation and restriction are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can indirectly link to each other by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
Describe according to Mike's pin of the automatic identification audio interface of the utility model embodiment and method, device and the electric signing tools of ground pin below in conjunction with accompanying drawing.
Among the utility model embodiment, audio interface comprises the first pin and the second pin.In concrete example of the present utility model, the first pin and the second pin to audio interface are defined as follows: the first pin is among Mike's pin MIC of audio interface and the ground pin GND, and the second pin is Mike's pin MIC of audio interface and among the ground pin GND another.
Among the embodiment of the present utility model, audio interface can be arbitrary money four-part form headset plug or jack, and for example diameter is headset plug or the earphone jack of 3.5mm or 2.5mm.
If the interface corresponding with audio interface of the device of Mike's pin of automatic identification audio interface of the present utility model and ground pin is jack, when audio interface to be identified is plug, then can be directly the plug of audio interface to be identified be inserted in the jack of this device; If the interface corresponding with audio interface of the device of Mike's pin of automatic identification audio interface of the present utility model and ground pin is plug, when audio interface to be identified is jack, then can be directly the plug of this device be inserted in the jack of audio interface to be identified; If the interface corresponding with audio interface of device of Mike's pin of automatic identification audio interface of the present utility model and ground pin is plug, when audio interface to be identified was plug, then can adopt two ends all was that the patchcord of jack connects; If the interface corresponding with audio interface of device of Mike's pin of automatic identification audio interface of the present utility model and ground pin is jack, when audio interface to be identified was jack, then can adopt two ends all was that the patchcord of plug connects.
Referring to Fig. 1, the device 100 of Mike's pin of the automatic identification audio interface of the utility model embodiment and ground pin comprises the first measurement module 110 and the second measurement module 120.Wherein:
The first pin of the first measurement module 110 and audio interface to be identified is coupled to detect voltage or the electric current of the first pin of this audio interface.The second pin of the second measurement module 120 and audio interface to be identified is coupled to detect voltage or the electric current of the second pin of this audio interface, wherein, when the voltage of the second pin of the audio interface to be identified that the voltage of the first pin of the audio interface to be identified that detects when the first measurement module 110 or electric current detect greater than the second measurement module 120 or electric current, the first pin of judging this audio interface is Mike's pin, and the second pin of this audio interface is the ground pin; When the voltage of the second pin of the audio interface to be identified that the voltage of the first pin of the audio interface to be identified that detects when the first measurement module 110 or electric current detect less than the second measurement module 120 or electric current, the first pin of judging this audio interface is the ground pin, and the second pin of this audio interface is Mike's pin.In this example, coupling comprises direct connection and indirect joint (coupling links to each other), the both sides that directly are connected to connection directly contact, indirect joint is included under the prerequisite of the know-why that does not affect the technical program, connect and pass through other devices or circuit indirect joint between the both sides, as connecting by devices such as wire, resistance, comprising that perhaps coupling links to each other, coupling links to each other and refers to that both sides do not have connection physically, but has each other coupled relation.
In an embodiment of the present utility model, can connect by the mode of interface, as shown in Figure 1, automatically identify Mike's pin of audio interface and the device 100 of ground pin and comprise first interface A1 and the second interface A2.Thus, the first measurement module 110 by first interface A1 be connected among the interface A2 one the first pin coupling (shown in Fig. 1 is that the first measurement module 110 is connected with the first pin of audio interface by first interface A1) with audio interface, the second measurement module 120 is by first interface A2 and another and the second pin of audio interface be coupled (shown in Fig. 1 is that the second measurement module 120 is connected with the second pin of audio interface by the second interface A2) of being connected among the interface A2.
Thus, according to 100 need of device of present embodiment size according to the output voltage of the first pin of audio interface to be identified and the second pin, namely can judge the type of this audio interface, thereby can accurately detect with lower cost the type of audio interface, namely detecting which pin is the MIC pin of audio interface, which pin is the GND pin of audio interface, thus convenient follow-up use.
Judge audio interface type by detecting voltage.Particularly, as shown in Figure 2, the first measurement module 110 comprises the first resistance R 1 and the first voltage detector 111.Wherein: the first pin coupling of an end of the first resistance R 1 and audio interface and the other end and ground coupling.The first voltage detector 111 is in parallel with the first resistance R 1.Further, the second measurement module 120 comprises the second resistance R 2 and second voltage detector 121.Wherein, the second pin coupling of an end of the second resistance R 2 and audio interface and the other end and ground coupling.Second voltage detector 121 is in parallel with the second resistance R 2.In this example, the first voltage detector 111 and second voltage detector 121 are voltmeter, such as the voltmeter V1 among Fig. 2 and voltmeter V2.
Particularly, for example audio interface is the audio interface of portable terminal, because Mike's pin MIC of portable terminal itself can produce equivalent resistance Rx, the scope of this equivalence resistance R x is generally 1K Ω-900K Ω, and the equivalent resistance Rx of Mike's pin MIC is little with the resistance difference of the device 100 of Mike's pin of automatically identifying audio interface and ground pin.And the ground pin GND of interface also can produce equivalent resistance Ry frequently, and the scope of this equivalence resistance R y is 1M Ω-900M Ω, and namely the equivalent resistance Ry of pin GND trends towards infinity.
Therefore, when the device of Mike's pin of automatic identification audio interface and ground pin inserts the audio interface of portable terminal, by V=U*R/(Rx+R), wherein, U is the voltage of Mike's pin MIC, R is for connecting and measuring the first measurement module 110 of voltage of Mike's pin MIC or the test resistance of the second measurement module 120, for example: represent respectively the test resistance of the first measurement module 110 and the second measurement module 120 with R1 or R2, the scope of R1 and R2 is: 1K Ω-900K Ω.Therefore, because Rx and R resistance difference are little, therefore, measure the first measurement module 110 of Mike's pin MIC or the voltmeter of the second measurement module 120 and can show registration.Because it is infinitely great that Ry is tending towards, therefore, the registration that the first measurement module 110 of measurement ground pin GND or the voltmeter of the second measurement module 120 show is tending towards 0, thereby, can identify by the registration of voltmeter V1 and voltmeter V2 the type of the first pin and second pin of audio interface, the pin that is the audio interface of the voltmeter correspondence that shows registration is Mike's pin MIC, and voltmeter shows that the pin that registration is roughly 0 correspondence is ground pin GND.
Embodiment 2
Judge audio interface type by detecting electric current.Particularly, as shown in Figure 3, the first measurement module 110 comprises the 3rd resistance R 3 and the first current detector 112.Wherein: the first pin coupling of an end of the 3rd resistance R 3 and audio interface and the other end and ground coupling.The first current detector 112 is connected with the 3rd resistance R 3.Further, the second measurement module 120 comprises the 4th resistance R 4 and the second current detector 122.Wherein: the second pin coupling of an end of the 4th resistance R 4 and audio interface and the other end and ground coupling.The second current detector 122 is connected with the 4th resistance R 4.In this example, the first current detector 112 and the second current detector 122 are ammeter, such as the ammeter A1 among Fig. 3 and ammeter A2.
Particularly, because Mike's pin MIC of portable terminal itself can produce equivalent resistance Rx, the scope of this equivalence resistance R x is generally 1K Ω-900K Ω, and the equivalent resistance Rx of Mike's pin MIC is little with the resistance difference of the device 100 of Mike's pin of automatically identifying audio interface and ground pin.And the ground pin GND of interface also can produce equivalent resistance Ry frequently, and the scope of this equivalence resistance R y is 1M Ω-900M Ω, and namely the equivalent resistance Ry of pin GND trends towards infinity.
Therefore, when the device of Mike's pin of automatic identification audio interface and ground pin inserts the audio interface of portable terminal, by I=U/(Rx+R), wherein, U is the voltage of Mike's pin MIC, R is for connecting and measuring the first measurement module 110 of voltage of Mike's pin MIC or the test resistance of the second measurement module 120, for example: represent respectively the test resistance of the first measurement module 110 and the second measurement module 120 with R1 or R2, the scope of R1 and R2 is: 1K Ω-900K Ω.Therefore, because Rx and R resistance difference are little, therefore, measure the first measurement module 110 of Mike's pin MIC or the ammeter of the second measurement module 120 and can show registration; Because it is infinitely great that Ry is tending towards, measure the first measurement module 110 of ground pin GND or the ammeter registration of the second measurement module 120 and be tending towards 0, therefore, namely can identify the type of the first pin and second pin of audio interface by the registration of ammeter A1 and ammeter A2, it is Mike's pin MIC that the pin of audio interface of the correspondence of registration is arranged, and registration is that the pin of the audio interface of 0 correspondence is ground pin GND.
Certainly, in the utility model, the first measurement module 110 can also be different with the second measurement module 120, and for example the first measurement module 110 adopts the mode of voltage detecting, and the second measurement module 120 adopts the mode of current detecting.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment in the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is by claim and be equal to and limit.
Claims (9)
1. automatically identify Mike's pin of audio interface and the device of ground pin for one kind, described audio interface comprises the first pin and the second pin, in the pin one of Mike's pin that described the first pin is described audio interface and ground, in Mike's pin that described the second pin is described audio interface and the ground pin another, it is characterized in that the device of Mike's pin of described automatic identification audio interface and ground pin comprises:
The first measurement module, the first pin of described the first measurement module and described audio interface is coupled to detect voltage or the electric current of described the first pin; And
The second measurement module, the second pin of described the second measurement module and described audio interface is coupled to detect voltage or the electric current of described the second pin;
Wherein, when the voltage that the voltage that detects when described the first measurement module or electric current detect greater than described the second measurement module or electric current, judge that described the first pin is Mike's pin, described the second pin is the ground pin; When the voltage that the voltage that detects when described the first measurement module or electric current detect less than described the second measurement module or electric current, judge that described the first pin is the ground pin, described the second pin is Mike's pin.
2. the device of Mike's pin of automatic identification audio interface as claimed in claim 1 and ground pin is characterized in that, also comprises:
First interface and the second interface, wherein, described the first measurement module by one in described first interface and described the second interface with the coupling of the first pin of described audio interface, described the second measurement module is coupled by the second pin of another and described audio interface in described first interface and described the second interface.
Mike's pin of automatic identification audio interface as claimed in claim 1 and ground pin device, it is characterized in that described the first measurement module further comprises:
The first resistance, the first pin coupling of an end of described the first resistance and described audio interface and the other end and ground coupling; And
The first voltage detector, described the first voltage detector is in parallel with described the first resistance.
Mike's pin of automatic identification audio interface as claimed in claim 1 and ground pin device, it is characterized in that described the first measurement module further comprises:
The 3rd resistance, the first pin coupling of an end of described the 3rd resistance and described audio interface and the other end and ground coupling; And
The first current detector, described the first current detector is connected with described the 3rd resistance.
Mike's pin of automatic identification audio interface as claimed in claim 3 and ground pin device, it is characterized in that described the second measurement module further comprises:
The second resistance, the second pin coupling of an end of described the second resistance and described audio interface and the other end and described the coupling; And
The second voltage detector, described second voltage detector is in parallel with described the second resistance.
Mike's pin of automatic identification audio interface as claimed in claim 4 and ground pin device, it is characterized in that described the second measurement module further comprises:
The 4th resistance, the second pin coupling of an end of described the 4th resistance and described audio interface and the other end and described the coupling; And
The second current detector, described the second current detector is connected with described the 4th resistance.
7. the device of Mike's pin of automatic identification audio interface as claimed in claim 5 and ground pin is characterized in that described the first voltage detector and described second voltage detector are voltmeter.
8. the device of Mike's pin of automatic identification audio interface as claimed in claim 6 and ground pin is characterized in that described the first current detector and described the second current detector are ammeter.
9. an electric signing tools is characterized in that, comprises such as Mike's pin of each described automatic identification audio interface of claim 1-8 and the device of ground pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385214 CN202873030U (en) | 2012-08-03 | 2012-08-03 | Device capable of automatically identifying microphone pin and ground pin of audio interface, and auto-sign tool |
| HK13109053A HK1182897A2 (en) | 2012-08-03 | 2013-08-02 | Device for automatically identifying microphone pin and ground pin of audio interface and signature tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385214 CN202873030U (en) | 2012-08-03 | 2012-08-03 | Device capable of automatically identifying microphone pin and ground pin of audio interface, and auto-sign tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202873030U true CN202873030U (en) | 2013-04-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385214 Expired - Lifetime CN202873030U (en) | 2012-08-03 | 2012-08-03 | Device capable of automatically identifying microphone pin and ground pin of audio interface, and auto-sign tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202873030U (en) |
| HK (1) | HK1182897A2 (en) |
-
2012
- 2012-08-03 CN CN 201220385214 patent/CN202873030U/en not_active Expired - Lifetime
-
2013
- 2013-08-02 HK HK13109053A patent/HK1182897A2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK1182897A2 (en) | 2013-12-06 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |