CN204069255U - The audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone - Google Patents
The audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone Download PDFInfo
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- CN204069255U CN204069255U CN201420363150.4U CN201420363150U CN204069255U CN 204069255 U CN204069255 U CN 204069255U CN 201420363150 U CN201420363150 U CN 201420363150U CN 204069255 U CN204069255 U CN 204069255U
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Abstract
The utility model discloses the audio frequency extended interface circuit of a kind of compatible common headphones, microphone and Integral earphone, it comprises microphone jack, earphone socket, selector switch and mainboard front audio Connection Block, the utility model just can solve the compatible defect in prior art existing for front audio interface by the circuit structure that microphone jack, earphone socket, selector switch and mainboard front audio Connection Block are formed, there are following two advantages: 1, circuit structure is simple, and cost is low; 2, can compatible common headphones, microphone and i/N version Integral earphone, economical and practical, highly versatile, can adapt to the current market demand.
Description
Technical field
The utility model relates to the technical field of computer housing front audio extended interface, more particularly, relates to the audio frequency extended interface circuit of a kind of compatible common headphones, microphone and Integral earphone.
Background technology
Early stage common headphones has the standard of 2.5mm and 3.5mm, and wherein, as shown in Figure 1, the earphone of common 3.5mm plug, is the structure of syllogic mostly, is from left to right divided into L channel, R channel and ground wire successively.
Along with the development of science and technology, composite audio interface (earphone+microphone is two-in-one) becomes a kind of trend of portable product gradually, therefore, Integral earphone is also more and more universal, and described Integral earphone refers to two-in-one earphone microphone and earphone being combined, be connected on a composite audio interface, can realize recording simultaneously and play sound by the stereoscopic plug of a four-part form.Wherein, as shown in Figures 2 and 3, Integral earphone includes N version Integral earphone and i version Integral earphone, and the plug of N version earphone is from left to right L channel, R channel, microphone and ground wire successively, and i version earphone is from left to right L channel, R channel, ground wire and microphone successively.
At present, the all-in-one on market, computer housing front audio interface generally only support common headphones and microphone, and do not support i/N version Integral earphone, the compatibility which results in equipment is poor, adds use cost, can not meeting the market requirement.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect of the prior art, provide that a kind of circuit structure is simple, cost is low, highly versatile, can the audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone.
For achieving the above object, the technical scheme that the utility model provides is as follows: a kind of compatible common headphones, the audio frequency extended interface circuit of microphone and Integral earphone, comprise microphone jack PJ1, earphone socket PJ2, selector switch SW1 and mainboard front audio Connection Block MB, described microphone jack PJ1 and earphone socket PJ2 is four pole biswitch audio sockets, the microphone input L channel stitch of described audio frequency Connection Block MB, microphone input R channel stitch all with the R channel input pin of microphone jack PJ1, L channel input pin is connected, the audio frequency ground stitch of described audio frequency Connection Block MB, mainboard BIOS detection stitch ground connection, the circuit of described audio frequency Connection Block MB exports R channel stitch and is connected with the R channel input pin of earphone socket PJ2, the microphone input detectable signal loop stitch of described audio frequency Connection Block MB, circuit exports detectable signal loop stitch and is connected to each other detectable signal output pin that is rear and microphone jack PJ1, the detectable signal output pin of earphone socket PJ2 is connected, the detectable signal of described audio frequency Connection Block MB exports the detectable signal input pin of stitch and microphone jack PJ1, the detectable signal input pin of earphone socket PJ2 is connected, the circuit of described audio frequency Connection Block MB exports L channel stitch and is connected with the L channel input pin of earphone socket PJ2, the N version audio frequency ground/i version microphone signal pin of described microphone jack PJ1, N version microphone signal/i version audio frequency ground pin is connected to each other rear ground connection, the 1st pin ground connection of described selector switch SW1, 2nd pin of described selector switch SW1 is connected with the N version microphone signal of earphone socket PJ2/i version audio frequency ground pin, the 3rd of described selector switch SW1, 4 pin are connected with the L channel output pin of microphone jack PJ1 respectively, 5th pin of described selector switch SW1 is connected with the N version audio frequency ground/i version microphone signal pin of earphone socket PJ2 respectively, the 6th pin ground connection of described selector switch SW1, the L channel output pin sky of described earphone socket PJ2 connects, described microphone jack PJ1 or earphone socket PJ2 is not when having plug to insert, the L channel input pin of socket and the switch of L channel output pin close, the switch of detectable signal output pin and detectable signal input pin disconnects, described microphone jack PJ1 or earphone socket PJ2 is when there being plug to insert, and the L channel input pin of socket and the switch of L channel output pin disconnect, and the switch of detectable signal output pin and detectable signal input pin closes.
As preferably, in technique scheme, described microphone jack PJ1 and earphone socket PJ2 is 3.5mm tetra-pole biswitch audio socket or 2.5mm tetra-pole biswitch audio socket.
Compared with prior art, the beneficial effects of the utility model are:
The utility model just can solve the compatible defect in prior art existing for front audio interface by the circuit structure that microphone jack, earphone socket, selector switch and mainboard front audio Connection Block are formed, there are following two advantages: 1, circuit structure is simple, and cost is low; 2, can compatible common headphones, microphone and i/N version Integral earphone, economical and practical, highly versatile, can adapt to the current market demand.
Accompanying drawing explanation
Fig. 1 is the structural representation of common headphones plug;
Fig. 2 is the structural representation of i version Integral earphone plug;
Fig. 3 is the structural representation of N version Integral earphone plug;
Fig. 4 is the circuit theory diagrams of the audio frequency extended interface circuit of compatible common headphones described in the utility model, microphone and Integral earphone;
Fig. 5 is the structural representation of microphone jack described in the utility model or earphone socket.
Be described further below in conjunction with the audio frequency extended interface circuit of drawings and Examples to compatible common headphones described in the utility model, microphone and Integral earphone.
Embodiment
Be below the preferred example of the audio frequency extended interface circuit of compatible common headphones described in the utility model, microphone and Integral earphone, therefore do not limit protection range of the present utility model.
Please refer to Fig. 4, there is shown the audio frequency extended interface circuit of a kind of compatible common headphones, microphone and Integral earphone, comprise a microphone jack PJ1, an earphone socket PJ2, a selector switch SW1 and a mainboard front audio Connection Block MB.
In this enforcement, as shown in Figure 5, microphone jack PJ1 and earphone socket PJ2 is four pole biswitch audio sockets, preferably, this four pole biswitch audio socket is 3.5mm tetra-pole biswitch audio socket, certainly, microphone jack PJ1 and earphone socket PJ2 also can be set to 2.5mm tetra-pole biswitch audio socket, and non-enforcement is limited.Be below the pinout of 3.5mm tetra-pole biswitch audio socket:
| 1 | N version audio frequency ground/i version microphone signal | 2 | N version microphone signal/i version audio frequency ground |
| 3 | Earphone R channel inputs | 4 | Headset left channel inputs |
| 5 | Detectable signal exports | 6 | Headset left channel exports |
| 7 | Detectable signal inputs | ? | ? |
It should be noted that, four pole biswitch audio sockets are not when having headset plug or microphone plug inserts, and the 4th pin of socket and the switch of the 6th pin are closed, and the switch of the 5th pin and the 7th pin disconnects; When there being plug to insert, the 4th pin of socket and the switch of the 6th pin disconnect, and the switch of the 5th pin and the 7th pin is closed.
In this enforcement, the selection that selector switch SW1 is used between i version Integral earphone and N version Integral earphone switches, and preferably, this selector switch SW1 can for having the double-point double-throw switch (DPDT/SM) of 6 pins.Be below the function declaration of selector switch SW1:
1-2/4-5 ON supports i version Integral earphone;
3-2/6-5 ON supports N version Integral earphone.
In this enforcement, mainboard front audio Connection Block MB is HD audio frequency Connection Block, has 10 stitch, and computer housing mainboard can be connected by the corresponding stitch of audio connecting cord with audio frequency Connection Block MB, is below the stitch definition of audio frequency Connection Block MB:
| 1 | Microphone input L channel | 2 | Audio frequency ground |
| 3 | Microphone input R channel | 4 | Mainboard BIOS detects, Low level effective |
| 5 | Circuit exports R channel | 6 | Microphone input detectable signal loop |
| 7 | Detectable signal exports | 8 | Empty |
| 9 | Circuit exports L channel | 10 | Circuit exports detectable signal loop |
Concrete, the following detailed description of the annexation of components and parts each in the utility model.Wherein, the 1st of audio frequency Connection Block MB, 3 stitch all with the 3rd of microphone jack PJ1, 4 pin are connected, the 2nd of audio frequency Connection Block MB, 4 stitch ground connection, 5th stitch of audio frequency Connection Block MB is connected with the 3rd pin of earphone socket PJ2, the 6th of audio frequency Connection Block MB, 10 stitch are connected to each other the 5th pin that is rear and microphone jack PJ1, 5th pin of earphone socket PJ2 is connected, 7th stitch of audio frequency Connection Block MB and the 7th pin of microphone jack PJ1, 7th pin of earphone socket PJ2 is connected, 9th stitch of audio frequency Connection Block MB is connected with the 4th pin of earphone socket PJ2, the 1st of microphone jack PJ1, 2 pin are connected to each other rear ground connection, the 1st pin ground connection of selector switch SW1, 2nd pin of selector switch SW1 is connected with the 2nd pin of earphone socket PJ2, the 3rd of selector switch SW1, 4 pin are connected with the 6th pin of microphone jack PJ1 respectively, 5th pin of selector switch SW1 is connected with the 1st pin of earphone socket PJ2 respectively, the 6th pin ground connection of selector switch SW1, the 6th pin sky of earphone socket PJ2 connects.
When using i version Integral earphone plug plugged earphone socket PJ2, 5th pin of earphone socket PJ2 and the switch of the 7th pin close, mainboard detects that audio frequency extended interface has earphone and microphone plug to insert, mainboard circuit exports on left and right sound track signals the 4th pin of delivering to earphone socket PJ2 respectively and the 3rd pin, mainboard microphone input left and right sound track signals then first by the 4th pin of microphone jack PJ1 and the 6th pin (when microphone jack PJ1 does not insert plug, 4th pin of microphone jack PJ1 and the switch of the 6th pin close), then deliver on the 1st pin of earphone socket PJ2 by the 4th pin of selector switch SW1 and the 5th pin, such mainboard built-in audio interface microphone input and line output signal are all connected on i version Integral earphone by earphone socket PJ2.
When using N version Integral earphone plug plugged earphone socket PJ2, 5th pin of earphone socket PJ2 and the switch of the 7th pin close, mainboard detects that audio frequency extended interface has earphone and microphone plug to insert, mainboard circuit exports on left and right sound track signals the 4th pin of delivering to earphone socket PJ2 respectively and the 3rd pin, mainboard microphone input left and right sound track signals then first by the 4th pin of microphone jack PJ1 and the 6th pin (when microphone jack PJ1 does not insert plug, 4th pin of microphone jack PJ1 and the switch of the 6th pin close), then deliver on the 2nd pin of earphone socket PJ2 by the 3rd pin of selector switch SW1 and the 2nd pin, such mainboard built-in audio interface microphone input and line output signal are all connected on N version Integral earphone by earphone socket PJ2.
When using common headphones plug plugged earphone socket PJ2, 5th pin of earphone socket PJ2 and the switch of the 7th pin close, mainboard detects that audio frequency extended interface has earphone and microphone plug to insert, mainboard circuit exports on left and right sound track signals the 4th pin of delivering to earphone socket PJ2 respectively and the 3rd pin, now microphone jack PJ1 is not if inserted microphone plug, mainboard microphone input left and right sound track signals is then first by the 4th pin and the 6th pin of microphone jack PJ1, then deliver on the 1st pin of earphone socket PJ2 or the 2nd pin (being determined by the state of selector switch SW1) by selector switch SW1, because the relative four-section type headset plug of common three-section earphone plug the 1/2nd section is short circuit, at this moment microphone signal will be connected with ground wire through common headphones plug, can prevent microphone circuit noise from entering earphone, such mainboard built-in audio interface circuit output signal is just connected in common headphones by earphone socket PJ2.
When using common microphone plug to insert microphone jack PJ1,4th pin of microphone jack PJ1 and the switch of the 6th pin disconnect, on the 1st pin that microphone signal cannot deliver to earphone socket PJ2 by selector switch SW1 or the 2nd pin, now earphone socket PJ2 only possesses common headphones interface function, and mainboard circuit is exported left and right sound track signals and directly to deliver on the 3rd pin of earphone socket PJ2 and the 4th pin mainboard built-in audio interface microphone input signal like this and be all connected in common microphone by microphone jack PJ1.
In sum, the utility model just can solve the compatible defect in prior art existing for front audio interface by the circuit structure that microphone jack, earphone socket, selector switch and mainboard front audio Connection Block are formed, there are following two advantages: 1, circuit structure is simple, and cost is low; 2, can compatible common headphones, microphone and i/N version Integral earphone, economical and practical, highly versatile, can adapt to the current market demand.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (2)
1. a compatible common headphones, the audio frequency extended interface circuit of microphone and Integral earphone, it is characterized in that: comprise microphone jack PJ1, earphone socket PJ2, selector switch SW1 and mainboard front audio Connection Block MB, described microphone jack PJ1 and earphone socket PJ2 is four pole biswitch audio sockets, the microphone input L channel stitch of described audio frequency Connection Block MB, microphone input R channel stitch all with the R channel input pin of microphone jack PJ1, L channel input pin is connected, the audio frequency ground stitch of described audio frequency Connection Block MB, mainboard BIOS detection stitch ground connection, the circuit of described audio frequency Connection Block MB exports R channel stitch and is connected with the R channel input pin of earphone socket PJ2, the microphone input detectable signal loop stitch of described audio frequency Connection Block MB, circuit exports detectable signal loop stitch and is connected to each other detectable signal output pin that is rear and microphone jack PJ1, the detectable signal output pin of earphone socket PJ2 is connected, the detectable signal of described audio frequency Connection Block MB exports the detectable signal input pin of stitch and microphone jack PJ1, the detectable signal input pin of earphone socket PJ2 is connected, the circuit of described audio frequency Connection Block MB exports L channel stitch and is connected with the L channel input pin of earphone socket PJ2, the N version audio frequency ground/i version microphone signal pin of described microphone jack PJ1, N version microphone signal/i version audio frequency ground pin is connected to each other rear ground connection, the 1st pin ground connection of described selector switch SW1, 2nd pin of described selector switch SW1 is connected with the N version microphone signal of earphone socket PJ2/i version audio frequency ground pin, the 3rd of described selector switch SW1, 4 pin are connected with the L channel output pin of microphone jack PJ1 respectively, 5th pin of described selector switch SW1 is connected with the N version audio frequency ground/i version microphone signal pin of earphone socket PJ2 respectively, the 6th pin ground connection of described selector switch SW1, the L channel output pin sky of described earphone socket PJ2 connects, described microphone jack PJ1 or earphone socket PJ2 is not when having plug to insert, the L channel input pin of socket and the switch of L channel output pin close, the switch of detectable signal output pin and detectable signal input pin disconnects, described microphone jack PJ1 or earphone socket PJ2 is when there being plug to insert, and the L channel input pin of socket and the switch of L channel output pin disconnect, and the switch of detectable signal output pin and detectable signal input pin closes.
2. the audio frequency extended interface circuit of compatible common headphones according to claim 1, microphone and Integral earphone, is characterized in that: described microphone jack PJ1 and earphone socket PJ2 is 3.5mm tetra-pole biswitch audio socket or 2.5mm tetra-pole biswitch audio socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363150.4U CN204069255U (en) | 2014-07-01 | 2014-07-01 | The audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363150.4U CN204069255U (en) | 2014-07-01 | 2014-07-01 | The audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone |
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| Publication Number | Publication Date |
|---|---|
| CN204069255U true CN204069255U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420363150.4U Expired - Fee Related CN204069255U (en) | 2014-07-01 | 2014-07-01 | The audio frequency extended interface circuit of compatible common headphones, microphone and Integral earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516837A (en) * | 2015-12-01 | 2016-04-20 | 浪潮软件集团有限公司 | Audio switching device suitable for self-service terminal |
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2014
- 2014-07-01 CN CN201420363150.4U patent/CN204069255U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516837A (en) * | 2015-12-01 | 2016-04-20 | 浪潮软件集团有限公司 | Audio switching device suitable for self-service terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170701 |