CN209170638U - Audio interface adaptive circuit, device and electronic equipment - Google Patents
Audio interface adaptive circuit, device and electronic equipment Download PDFInfo
- Publication number
- CN209170638U CN209170638U CN201822274383.8U CN201822274383U CN209170638U CN 209170638 U CN209170638 U CN 209170638U CN 201822274383 U CN201822274383 U CN 201822274383U CN 209170638 U CN209170638 U CN 209170638U
- Authority
- CN
- China
- Prior art keywords
- resistance
- audio
- connect
- audio interface
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses a kind of audio interface adaptive circuit, device and electronic equipment.The utility model forms a kind of audio interface adaptive circuit by setting switching module and detection module, detection module detects the audio frequency apparatus accessed by audio interface, the audio frequency apparatus of judgement access is audio playing apparatus or audio output device, when the audio frequency apparatus of access is audio playing apparatus, audio interface adaptive circuit is switched to output services mode by the switching module；When the audio frequency apparatus of access is audio output device, audio interface adaptive circuit is switched to input service mode by the switching module；Existing audio frequency apparatus is solved when needing to realize two functions of audio input and output, it needs using two audio interface, and two interfaces are easy the problem of wrong, achieve the effect that realize audio input function or audio output function automatically according to insertion equipment using an audio interface, has improved user experience.
Description
Technical field
The utility model relates to audio transmission techniques field, in particular to a kind of audio interface adaptive circuit, device and
Electronic equipment.
Background technique
Most of acoustic product only has audio input function on the market at present, passes through the products such as connecting line and mobile phone, computer
Connection plays the audio in portable computer, and equipment component only has audio output function, connect by connecting line with acoustic product,
To acoustic product output audio signal, only only a few product has the function of audio input and output simultaneously.
It is all by two audio interface however, having the product of audio input and output function simultaneously on the market at present
It realizes, in actual use, the product of small size can be brought bigger when two audio interface are added to design
Trouble, moreover, two audio interface respectively correspond audio input function and audio output function, user must confirm that oneself connects
Whether the audio interface connect is correct, and otherwise playback equipment can not receive audio signal, spreads out of without sound, user experience is not
It is good.
Utility model content
The main purpose of the utility model is to provide a kind of audio interface adaptive circuit, it is intended to it solves in the prior art,
The product for being provided simultaneously with audio input function and audio output function need design caused by two audio interface complicated and
The problem of being easy wrong.
To achieve the above object, the utility model proposes audio interface adaptive circuit include detection module and switching mould
Block.
The detection module, for when tone frequency channel wire be inserted into audio interface when, detect insertion be audio playing apparatus or
Audio output device.
The switching module, for when the detection module detect insertion be audio playing apparatus when, the switching
The audio interface adaptive circuit is switched to audio output operating mode by module, when the detection module detects insertion
When being audio output device, the audio interface adaptive circuit is switched to audio and plays operating mode by the switching module.
Preferably, the audio interface adaptive circuit further includes signal output module.
The signal output module, for when the switching module switches to audio output operating mode, Xiang Suoshu to be cut
Change the mold block output audio signal.
Preferably, the switching module includes the 9th resistance, the tenth resistance and multiplexer.
The multiplexer direct-flow input end is connect with the detection module, multiplexer direct current biasing end with
The signal output module connection, the multiplexer control terminal and the 9th resistance second end and the tenth resistance second end
Connection, the 9th resistance first end ground connection, the tenth resistance first end are connect with control terminal, the multiplexer audio
Output end is connect with audio L channel output end.
Preferably, the switching module further includes the 8th resistance and the second capacitor；Wherein, the multiplexer ground terminal
It is connected to ground, the multiplexer power end connects with the 8th resistance second end and the second capacitor first end respectively
It connects, the 8th resistance first end connects to power supply, the second capacitor second end ground connection.
Preferably, the detection module includes eleventh resistor, twelfth resistor, thirteenth resistor, the 14th resistance,
15 resistance, the 16th resistance, third capacitor, the 4th capacitor and third transistor.
The twelfth resistor first end is connect with the switching module, the twelfth resistor second end and the described tenth
The connection of six resistance first ends, the 16th resistance second end ground connection；The eleventh resistor first end and the 4th capacitor
First end is connect with the thirteenth resistor second end, and the second end of the tenth resistance and the second end of the 4th capacitor are equal
Ground connection；The thirteenth resistor first end is connect with the twelfth resistor first end, the thirteenth resistor first end also with
The 14th resistance first end connection；The 14th resistance second end respectively with the 15th resistance first end and described
The connection of third capacitor first end, the 15th resistance second end are connect with the third capacitor second end, the third capacitor
Second end is connect with the third transistor output end, the third transistor output end ground connection, the third transistor control
End is connect with the 14th resistance second end, and the third transistor input terminal is connect with the direct current biasing test side.
Preferably, the signal output module includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the 6th resistance, the 7th resistance, first capacitor, the first triode and the second triode.
The first resistor first end connects to power supply, the first resistor second end respectively with the second resistance first
End and the first triode control terminal connection；The second resistance second end is connect with second transistor collector, institute
State the second transistor emitter ground connection, second transistor base and the 3rd resistor second end and the 5th resistance the
One end connection, the 3rd resistor first end are connect with control terminal, and the 5th resistance second end and second triode are sent out
Emitter-base bandgap grading connection；First transistor emitter is connect with the first resistor first end, first transistor collector with
4th resistance first end connection, the 4th resistance second end respectively with the 6th resistance first end, the 7th resistance the
One end and the connection of first capacitor first end, the 7th resistance second end connect with the switching module, the first capacitor the
Two ends are connect with the 6th resistance second end, the 6th resistance second end ground connection.
The utility model also proposes that a kind of audio interface self-reacting device, the audio interface self-reacting device include as above
The audio interface adaptive circuit.
The utility model also proposes a kind of electronic equipment, and the electronic equipment includes that audio interface as described above is adaptive
Device.
Technical solutions of the utility model are detected by using equipment of the detection module to access audio interface, and judgement connects
Entering device is audio playing apparatus or audio output device, and by switching module switching working mode according to testing result, tool
Body, when detecting access device is audio playing apparatus, switching module is switched to audio output operating mode, switch module
The audio signal that signal output module exports is sent to access device, when detecting access device is audio output device,
Switching module is switched to audio and plays operating mode, is broadcast using the audio signal that itself loudspeaker inputs access device
It puts；Realize that user only needs for access device and audio interface to be attached with this, audio interface adaptive circuit can be automatic
According to the difference of access device, suitable operating mode is selected, is solved in the prior art, using caused by two audio interface
The problem of design is complicated, and user is easy wrong in use, having reached can basis using an audio interface
Access device realizes the effect of audio input function or audio output function automatically, and the user experience is improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the utility model audio interface adaptive circuit；
Fig. 2 is the circuit diagram of another embodiment of the utility model audio interface adaptive circuit；
Fig. 3 is structural schematic diagram of the utility model audio interface adaptive circuit in Baffle Box of Bluetooth product.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Switching module | R1~R16 | First resistor is to the 16th resistance |
| 200 | Detection module | C1~C4 | First capacitor is to the 4th capacitor |
| 300 | Signal output module | Q1~Q3 | First triode is to third transistor |
| U1 | Multiplexer | VCC | Power supply |
| MCU-CTL | Control terminal | DC-Detect | Direct current biasing test side |
| Audio-L | Audio L channel output end | AMP | Amplifier |
| SPK | Loudspeaker | Line Det | Line tester |
| Audio Jack | Audio interface |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Occur it is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also do not wanted in the utility model
Within the protection scope asked.
The utility model proposes a kind of audio interface adaptive circuits.
As shown in Figure 1, in the utility model embodiment, the audio interface adaptive circuit include detection module 200 and
Switching module 100.
The detection module 200, for when tone frequency channel wire be inserted into audio interface when, detect insertion be audio playing apparatus also
It is audio output device.
The switching module 100, for when the detection module 200 detect insertion be audio playing apparatus when, institute
It states switching module 100 and the audio interface adaptive circuit is switched into audio output operating mode, when the detection module 200
When detect insertion is audio output device, the audio interface adaptive circuit is switched to sound by the switching module 100
Frequency plays operating mode.
It is worth noting that the detection module 200 passes through direct current biasing test side when tone frequency channel wire is inserted into audio interface
DC_Detect detects audio interface L channel level, to identify that access device is audio output device or audio playing apparatus,
Specifically can also detect insertion by detecting whether to input there are audio signal is that audio playing apparatus or audio output fill
When the detection mode set, but pass through detection audio signal may be due to insertion audio interface, does not carry out audio broadcasting and cause to miss
Sentence, but can be as auxiliary detection means.
It is emphasized that switching module 100 can automatically switch suitable Working mould according to the access device detected
Formula, for example, in the present embodiment, this circuit is mounted on an acoustic product, when access device is another without audio output
Sound equipment when, then left channel audio information can be exported to audio interface, two sound equipments composition is stereo, when access device is mobile phone
Or when the audio output devices such as computer, then this acoustic product plays out the audio signal received, when access device is to have
When the acoustic product of audio output, then form it is stereo, play jointly another acoustic product output audio, work as access device
When for high power acoustics, output audio signal does not play out audio signal to high power acoustics, this acoustic product.
The equipment that the present embodiment accesses audio interface by using 200 pairs of detection module detects, and judges access device
It is audio playing apparatus or audio output device, and by the switching working mode according to testing result of switching module 100, so that this
Audio interface adaptive circuit can automatically select audio input or audio output according to the difference of access device, solve existing
Have in technology, using design caused by two audio interface complexity, and user in use be easy wrong the problem of,
The effect that can realize automatically audio input function or audio output function according to access device using an audio interface is reached
Fruit, the user experience is improved.
Further, the audio interface adaptive circuit further includes signal output module 300.
The signal output module 300, for when the switching module 100 switches to audio output operating mode, to
100 output audio signal of switching module.
It can be readily appreciated that switching module 100 itself can not generate audio signal, only audio signal is sent, is believed
Audio signal is sent to switching module 100 by number output module 300, and switching module 100 could access audio in playback equipment and connect
When mouth, to playback equipment output audio signal, to realize the function of audio output.
The equipment that the present embodiment accesses audio interface by using 200 pairs of detection module detects, and judges access device
It is audio playing apparatus or audio output device, and by the switching working mode according to testing result of switching module 100, specifically
Ground, when detecting access device is audio playing apparatus, switching module 100 is switched to audio output operating mode, switching molding
The audio signal that signal output module 300 exports is sent to access device by block, when detect access device for audio output dress
When setting, switching module 100 is switched to audio and plays operating mode, the audio signal inputted using itself loudspeaker to access device
It plays out；Realize that user only needs for access device and audio interface to be attached with this, audio interface adaptive circuit is
Suitable operating mode can be selected automatically according to the difference of access device, solved in the prior art, using two audio interface
Caused by design it is complicated, and the problem of user is easy wrong in use, reached using an audio interface i.e.
The effect of audio input function or audio output function can be realized automatically according to access device, the user experience is improved.
As shown in Fig. 2, in the present embodiment, the switching module 100 in this audio interface adaptive circuit includes the 9th electricity
Hinder R9, the tenth resistance R10 and multiplexer U1.
The multiplexer U1 direct-flow input end is connect with the detection module 200, the multiplexer U1 direct current
Offset side is connect with the signal output module 300, the multiplexer U1 control terminal and the 9th resistance R9 second end
And the tenth resistance R10 second end connection, the 9th resistance R9 first end ground connection, the tenth resistance R10 first end and control
MCU_CTL connection is held, the multiplexer U1 audio output is connect with audio L channel output terminals A udio_L.
It is worth noting that multiplexer U1 DC output end is connect with signal output module 300, signal output is received
The audio signal that module 300 exports, when switching module 100 is switched to audio output operating mode, multiplexer U1 will be connect
The audio signal received is realized stereo by audio output, output to audio L channel output terminals A udio_L.
Further, the switching module 100 further includes the 8th resistance R8 and the second capacitor C2.
The multiplexer U1 ground terminal is connected to ground, and the multiplexer U1 power end is electric with the described 8th respectively
R8 second end and the second capacitor C2 first end connection are hindered, the 8th resistance R8 first end connect with power supply VCC, and described the
Two capacitor C2 second ends ground connection.
It can be readily appreciated that the 8th resistance R8 and the second capacitor C2 composition power supply circuit is multiplexer U1 power supply, lead to
Multiplexer U1 ground terminal forming circuit is crossed, the 8th resistance R8 is mainly used for dividing, and the second capacitor C2 is mainly used for filtering, should
Power supply circuit can modify according to the different multiplexer U1 used.
Further, the detection module 200 includes eleventh resistor R11, twelfth resistor R12, thirteenth resistor
R13, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16, third capacitor C3, the 4th capacitor C4 and the three or three pole
Pipe Q3.
The twelfth resistor R12 first end is connect with the switching module 100, the twelfth resistor R12 second end
It is connect with the 16th resistance R16 first end, the 16th resistance R16 second end ground connection；The eleventh resistor R11
One end and the 4th capacitor C4 first end are connect with the thirteenth resistor R13 second end, and the second of the tenth resistance R10
The second end of end and the 4th capacitor C4 are grounded；The thirteenth resistor R13 first end and the twelfth resistor R12 the
One end connection, the thirteenth resistor R13 first end are also connect with the 14th resistance R14 first end；14th electricity
Resistance R14 second end is connect with the 15th resistance R15 first end and the third capacitor C3 first end respectively, and the described 15th
Resistance R15 second end is connect with the third capacitor C3 second end, the third capacitor C3 second end and the third transistor
The connection of Q3 output end, the third transistor Q3 output end ground connection, the third transistor Q3 control terminal and the 14th electricity
The connection of R14 second end is hindered, the third transistor Q3 input terminal is connect with the direct current biasing test side DC_Detect.
It should be noted that detection module 200 mainly accesses audio interface by direct current biasing test side DC_Detect
Device detected, by triode detect switching module 100 whether be provided with bias voltage, signal has been detected whether with this
It is inputted by audio interface；In the present embodiment, when being inputted there are signal by audio interface, direct current biasing test side DC_
It is 1 that Detect, which can be detected DC level, can be identified to audio input device.
Further, the signal output module 300 includes first resistor R1, second resistance R2,3rd resistor R3, the 4th
Resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, first capacitor C1, the first triode Q1 and the second triode
Q2。
The first resistor R1 first end is connect with power supply VCC, and the first resistor R1 second end is respectively with described second
Resistance R2 first end and the first triode Q1 control terminal connection；The second resistance R2 second end and second triode
The connection of Q2 collector, the second triode Q2 emitter ground connection, the second triode Q2 base stage and the 3rd resistor R3
Second end and the 5th resistance R5 first end connection, the 3rd resistor R3 first end are connect with control terminal, the 5th electricity
Resistance R5 second end is connect with the second triode Q2 emitter；The first triode Q1 emitter and the first resistor R1
First end connection, the first triode Q1 collector connect with the 4th resistance R4 first end, the 4th resistance R4 the
Two ends are connect with the 6th resistance R6 first end, the 7th resistance R7 first end and first capacitor C1 first end respectively, and described
Seven resistance R7 second ends are connect with the switching module 100, the first capacitor C1 second end and the 6th resistance R6 second
End connection, the 6th resistance R6 second end ground connection.
It is worth noting that control terminal MCU_CTL is by bias voltage, to control the on-off of the second triode Q2, come for
First triode Q1 provides biasing, so that power supply VCC receives control to the voltage waveform that switching device exports, forms audio letter
Number, and the audio signal can be exported by audio interface, wherein first capacitor C1 mainly carries out the audio signal of output
Noise filtering, first resistor R1, second resistance R2 and the 5th resistance R5 are for controlling the first triode Q1 and the second triode Q2
The bias voltage size needed.
The equipment that the present embodiment accesses audio interface by using 200 pairs of detection module detects, and judges access device
It is audio playing apparatus or audio output device, and by the switching working mode according to testing result of switching module 100, specifically
Ground, when detecting access device is audio playing apparatus, switching module 100 is switched to audio output operating mode, switching molding
The audio signal that signal output module 300 exports is sent to access device by block, when detect access device for audio output dress
When setting, switching module 100 is switched to audio and plays operating mode, the audio signal inputted using itself loudspeaker to access device
It plays out；Realize that user only needs for access device and audio interface to be attached with this, audio interface adaptive circuit is
Suitable operating mode can be selected automatically according to the difference of access device, solved in the prior art, using two audio interface
Caused by design it is complicated, and the problem of user is easy wrong in use, reached using an audio interface i.e.
The effect of audio input function or audio output function can be realized automatically according to access device, the user experience is improved
As shown in figure 3, Fig. 3 is structural schematic diagram of the utility model embodiment in Baffle Box of Bluetooth product, need to illustrate
, the single-chip microcontroller in diagram is integrated with bluetooth module, can receive the audio signal of Bluetooth transmission by single-chip microcontroller, at this point,
Switching module 100 is located at audio and plays operating mode, and the amplifier AMP and loudspeaker SPK that are carried by sound equipment carry out audio
It plays, at this time if there is tone frequency channel wire accesses audio interface Audio Jack, detection module starts to detect audio interface Audio
The DC level of the upper left and right acoustic channels of Jack illustrates that access device is playback equipment, if detecting if detecting that DC level is 1
DC level is 0 and illustrates that access device is audio output device, after the completion of identification, can be led to according to the type of access device
It crosses switching module and switches to corresponding working method, to realize audio interface adaptation function.
You need to add is that if the Bluetooth audio device for being equipped with this audio interface adaptive circuit is equipped with microphone
Cooperate the audio output operating mode in this audio interface adaptive circuit, realizes call function and decrease of noise functions, pass through Mike
Wind obtains the audio that user issues, and is sent to by audio output operating mode or bluetooth module and to be connect with the Bluetooth audio device
User equipment, and the audio signal of above-mentioned user equipment return is received by audio-frequency play mode or bluetooth module and is broadcast
It puts, voice-frequency telephony function can be realized.
It is worth noting that in the present embodiment Bluetooth audio device, the control to modules and the switching to switching module
It is mainly carried out by single-chip microcontroller, and audio-frequency play mode can carry out simultaneously with audio output module；For example, when being connect by Bluetooth audio frequency
Receive audio signal, and access device be audio-frequence player device slave when, the deterministic process of the sound equipment is as follows:
After tone frequency channel wire accesses in Bluetooth audio device, line tester Line Det detects that tone frequency channel wire accesses, and 0 level of output is extremely
Single-chip microcontroller, while detection module 200 detects that audio interface L channel DC level is 0, i.e. no audio signal inputs, and will knot
Fruit is sent to single-chip microcontroller, and signal supervisory instrument Signal detect detects the presence of ongoing audio and plays, 1 electricity of output
It is flat to be sent to single-chip microcontroller, single-chip microcontroller can be judged according to above- mentioned information access device for audio-frequence player device, and this Bluetooth audio device
It is playing audio；Single-chip microcontroller keeps 100 audio of switching module broadcasting operating mode constant at this time, and detection module 200 detects sound
Frequency interface right channel output level, when output level is 1, recognizing access device is slave, and switching module 100 is kept at this time
Audio plays operating mode, and enables audio output operating mode, realizes that two sound equipments carry out played in stereo to audio.
The equipment that the present embodiment accesses audio interface by using 200 pairs of detection module detects, and judges access device
It is audio playing apparatus or audio output device, and by the switching working mode according to testing result of switching module 100, specifically
Ground, when detecting access device is audio playing apparatus, switching module 100 is switched to audio output operating mode, switching molding
The audio signal that signal output module 300 exports is sent to access device by block, when detect access device for audio output dress
When setting, switching module 100 is switched to audio and plays operating mode, the audio signal inputted using itself loudspeaker to access device
It plays out；Realize that user only needs for access device and audio interface to be attached with this, audio interface adaptive circuit is
Suitable operating mode can be selected automatically according to the difference of access device, solved in the prior art, using two audio interface
Caused by design it is complicated, and the problem of user is easy wrong in use, reached using an audio interface i.e.
The effect of audio input function or audio output function can be realized automatically according to access device, the user experience is improved.
The utility model also proposes a kind of audio interface self-reacting device, which includes that audio connects
Mouth adaptive circuit, the specific structure of the audio interface adaptive circuit is referring to above-described embodiment, since this audio interface is adaptive
Device is answered to use whole technical solutions of above-mentioned all embodiments, therefore at least with the technical solution institute band of above-described embodiment
All beneficial effects come, this is no longer going to repeat them.
The utility model also proposes a kind of electronic equipment, and electronic apparatus application audio interface as described above adaptively fills
It sets, using whole technical solutions of above-mentioned all embodiments, therefore at least, the technical solution with above-described embodiment is brought
All beneficial effects, this is no longer going to repeat them.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (8)
1. a kind of audio interface adaptive circuit, which is characterized in that the audio interface adaptive circuit include detection module and
Switching module；Wherein,
The detection module, for when tone frequency channel wire is inserted into audio interface, detect insertion to be audio playing apparatus or audio
Output device；
The switching module, for when the detection module detect insertion be audio playing apparatus when, the switching module
The audio interface adaptive circuit is switched into audio output operating mode, detect insertion when the detection module is sound
When frequency output device, the audio interface adaptive circuit is switched to audio and plays operating mode by the switching module.
2. audio interface adaptive circuit as described in claim 1, which is characterized in that the audio interface adaptive circuit is also
Including signal output module；Wherein,
The signal output module, for when the switching module switches to audio output operating mode, to the switching mould
Block output audio signal.
3. audio interface adaptive circuit as claimed in claim 2, which is characterized in that the switching module includes the 9th electricity
Resistance, the tenth resistance and multiplexer；Wherein,
The multiplexer direct-flow input end is connect with the detection module, multiplexer direct current biasing end with it is described
Signal output module connection, the multiplexer control terminal and the 9th resistance second end and the tenth resistance second end connect
It connects, the 9th resistance first end ground connection, the tenth resistance first end is connect with control terminal, and the multiplexer audio is defeated
Outlet is connect with audio L channel output end.
4. audio interface adaptive circuit as claimed in claim 3, which is characterized in that the switching module further includes the 8th electricity
Resistance and the second capacitor；Wherein, the multiplexer ground terminal is connected to ground, the multiplexer power end respectively with it is described
8th resistance second end and the second capacitor first end connection, the 8th resistance first end connect to power supply, and described second
Capacitor second end ground connection.
5. audio interface adaptive circuit as described in claim 1, which is characterized in that the detection module includes the 11st electricity
Resistance, twelfth resistor, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th resistance, third capacitor, the 4th capacitor and
Third transistor；Wherein,
The twelfth resistor first end is connect with the switching module, the twelfth resistor second end and the 16th electricity
Hinder first end connection, the 16th resistance second end ground connection；The eleventh resistor first end and the 4th capacitor first
End is connect with the thirteenth resistor second end, and the second end of the second end of the eleventh resistor and the 4th capacitor connects
Ground；The thirteenth resistor first end is connect with the twelfth resistor first end, the thirteenth resistor first end also with institute
State the connection of the 14th resistance first end；The 14th resistance second end respectively with the 15th resistance first end and described
The connection of three capacitor first ends, the 15th resistance second end connect with the third capacitor second end, the third capacitor the
Two ends are connect with the third transistor output end, the third transistor output end ground connection, the third transistor control terminal
It is connect with the 14th resistance second end, the third transistor input terminal is connect with direct current biasing test side.
6. audio interface adaptive circuit as claimed in claim 2, which is characterized in that the signal output module includes first
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, first capacitor, the one or three pole
Pipe and the second triode；Wherein,
The first resistor first end connects to power supply, the first resistor second end respectively with the second resistance first end and
The first triode control terminal connection；The second resistance second end is connect with second transistor collector, and described
Two transistor emitters ground connection, second transistor base and the 3rd resistor second end and the 5th resistance first end
Connection, the 3rd resistor first end are connect with control terminal, the 5th resistance second end and second transistor emitter
Connection；First transistor emitter is connect with the first resistor first end, first transistor collector with it is described
4th resistance first end connection, the 4th resistance second end respectively with the 6th resistance first end, the 7th resistance first end
And the connection of first capacitor first end, the 7th resistance second end are connect with the switching module, the first capacitor second end
It is connect with the 6th resistance second end, the 6th resistance second end ground connection.
7. a kind of audio interface self-reacting device, which is characterized in that the audio interface self-reacting device includes such as claim
Audio interface adaptive circuit described in any one of 1-6.
8. a kind of electronic equipment, which is characterized in that the electronic equipment includes that audio interface as claimed in claim 7 is adaptive
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274383.8U CN209170638U (en) | 2018-12-29 | 2018-12-29 | Audio interface adaptive circuit, device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274383.8U CN209170638U (en) | 2018-12-29 | 2018-12-29 | Audio interface adaptive circuit, device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170638U true CN209170638U (en) | 2019-07-26 |
Family
ID=67328093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822274383.8U Active CN209170638U (en) | 2018-12-29 | 2018-12-29 | Audio interface adaptive circuit, device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114302300A (en) * | 2021-12-31 | 2022-04-08 | 盈帜科技（常州）有限公司 | Audio input interface circuit and fire extinguishing system control center |
-
2018
- 2018-12-29 CN CN201822274383.8U patent/CN209170638U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114302300A (en) * | 2021-12-31 | 2022-04-08 | 盈帜科技（常州）有限公司 | Audio input interface circuit and fire extinguishing system control center |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105225681B (en) | Speech playing method and system | |
| CN201142743Y (en) | Headphone interface circuit and mobile phone with the same | |
| CN103118191B (en) | Using control method and mobile terminal for iPhone wire control earphone | |
| CN105372026B (en) | A kind of air-tightness detection device and its method of microphone pickup structural path | |
| CN105276751B (en) | Speech playing method and system | |
| CN105120499A (en) | Bluetooth master-slave mode automatic switching method and system | |
| CN106302997A (en) | A kind of output control method, electronic equipment and system | |
| CN209170638U (en) | Audio interface adaptive circuit, device and electronic equipment | |
| CN106293599A (en) | A kind of output control method, electronic equipment and output system | |
| CN105142072B (en) | A kind of audio devices and audio frequency playing method of external player | |
| CN205987323U (en) | Audio processing circuit and terminal based on type c interface | |
| CN205864668U (en) | Radiationproof screening apparatus for back-located antenna mobile telephone | |
| CN203027489U (en) | Indication circuit for testing earphone | |
| CN206226724U (en) | A kind of loudspeaker box testing device | |
| CN215871777U (en) | Control circuit of key extension type wired earphone | |
| CN206515597U (en) | Smart projector and intelligent interactive system | |
| CN202998471U (en) | An earphone testing box | |
| CN203151737U (en) | Earphone test expanding circuit | |
| CN206313976U (en) | Compatible apple and Android system and windows phone system automatic-switching type voicefrequency circuits | |
| CN202998472U (en) | An earphone test indicating device | |
| CN206506695U (en) | A kind of sound card converter | |
| CN202998111U (en) | Multifunctional signal tester | |
| CN206226696U (en) | A kind of electronic signal processing apparatus | |
| CN203057462U (en) | Novel voice control sound box | |
| CN205959184U (en) | Cascade sound card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |