CN105868141B - Digital interface adapter - Google Patents
Digital interface adapter Download PDFInfo
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- CN105868141B CN105868141B CN201610243436.2A CN201610243436A CN105868141B CN 105868141 B CN105868141 B CN 105868141B CN 201610243436 A CN201610243436 A CN 201610243436A CN 105868141 B CN105868141 B CN 105868141B
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- Prior art keywords
- earphone
- triode
- digital interface
- interface adapter
- power supply
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- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 9
- 230000005669 field effect Effects 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/38—Universal adapter
- G06F2213/3852—Converter between protocols
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Telephone Function (AREA)
Abstract
A kind of digital interface adapter, including shell and connecting line, connecting line with mobile device for connecting, shell is additionally provided with multiple earphone sockets, earphone socket is provided with circuit board, circuit board includes detection circuit and control circuit for being inserted into earphone or charge power supply in shell, what detection circuit was used to judge earphone socket insertion is earphone or charge power supply, and control circuit is charging of mobile devices for controlling charge power supply.Connecting line can be connect with the Lightning interface or USB interface of mobile device, by the way that multiple earphone sockets are arranged, also set up detection circuit and control circuit, what detection circuit can judge earphone socket insertion is earphone or charge power supply, it is charging of mobile devices that control circuit, which controls charge power supply, family is able to use while the Lightning interface or USB interface for occupying mobile device listen song, it can charge to mobile device, multiple earphones can also be inserted into, meet the needs of different users.
Description
Technical field
The present invention relates to electronic information technical fields, in particular to a kind of digital interface adapter.
Background technique
With the development of science and technology, some mobile device (such as mobile phone) production is more and more frivolous, mobile device
Lightning (or USB) interface can be handled as audio interface, can reduce the thickness of mobile device.In the prior art
Mobile device only have Lightning (or USB) interface, when this interface it is occupied to do audio processing after, just can not
It charges to equipment.And portable equipment itself is frivolous because of to accomplish, battery will not be very big, and power supply is generally insufficient.It is special
It is not that the accessory of occupancy equipment Lightning (or USB) interface also needs the power supply with equipment, causes the electricity of equipment that can use quickly
It is complete.
Summary of the invention
The purpose of the present invention is to provide a kind of digital interface adapter, can by the Lightning of mobile device (or
USB) interface conversion is audio interface, and also ensures and charge while listening song.
The embodiment of the present invention is achieved in that
A kind of digital interface adapter, including shell and connecting line, the connecting line are described for connecting with mobile device
Shell is additionally provided with multiple earphone sockets, and the earphone socket is provided in the shell for being inserted into earphone or charge power supply
Circuit board, the circuit board include detection circuit and control circuit, and the detection circuit is for judging the earphone socket insertion
Be the earphone or the charge power supply, the control circuit is that the mobile device is filled for controlling the charge power supply
Electricity.
The connecting line can be connect with the Lightning interface or USB interface of mobile device, by the way that multiple earphones are arranged
Socket, and be also provided with detection circuit and control circuit, what detection circuit can judge earphone socket insertion be earphone or
Charge power supply, it is charging of mobile devices that control circuit, which controls the charge power supply, is able to use family and is occupying mobile device
It while Lightning interface or USB interface listen song, can also charge to mobile device, multiple earphones can also be inserted into,
Meets the needs of different users.
Preferably, the circuit board includes microcontroller, and the microcontroller is used to detect when the detection circuit
When the earphone socket access charge power supply, the control circuit control charge power supply is institute by the digital interface adapter
State charging of mobile devices.
Preferably, the detection circuit includes amplifier and the first triode, and the amplifier includes non-inverting input terminal, anti-
Phase input terminal and signal output end, the base stage of first triode electrically connect with the signal output end of the amplifier
It connects, the inverting input terminal and the power input port are electrically connected, the emitter of first triode and the same phase
Input terminal is respectively connected with internal electric source, and the collector of first triode and the detection foot of the microcontroller are electrically connected.
Preferably, diode, the conduction of the diode are connected between the non-inverting input terminal and the internal electric source
Direction is by the internal electric source towards the non-inverting input terminal.
Preferably, first resistor is connected between the diode and the internal electric source, the first resistor is for dropping
The potential at the low diode both ends.
Preferably, the control circuit includes field-effect tube and the second triode, the output interface of the microcontroller with
The base stage of second triode is electrically connected, and the drain electrode of the field-effect tube and the connecting line are electrically connected, the field effect
Should the grid of pipe and the collector of second triode be electrically connected, the source electrode of the field-effect tube and the earphone socket connect
It connects, the emitter ground connection of second triode.
Preferably, it is connected with biasing resistor between the grid of the field-effect tube and the earphone socket, for when described
When field-effect tube is connected, the bias voltage of the fet gate is second triode power supply.
Preferably, one end of the connecting line is connect with the circuit board, and the other end of the connecting line is terminals, institute
Terminals are stated for connecting with the mobile device, the terminals are lightning (Lightning) terminal or universal serial bus
(Universal Serial Bus, USB) terminal.
Preferably, the shell is additionally provided with universal asynchronous receiving-transmitting transmitter (Universal Asynchronous
Receiver/Transmitter, UART) interface, hardware is set by the digital interface adapter for the mobile device
It is standby to be controlled.
Preferably, the shell is additionally provided with digital audio interface, for connecting with peripheral hardware audio decoding apparatus, improves outer
If the sound quality of audio decoding apparatus, the digital audio interface uses SPDIF interface.
The beneficial effect of the embodiment of the present invention is:
Digital interface adapter provided by the invention can be used as the accessory of mobile device (such as mobile phone, plate), including shell
And connecting line, the connecting line can be connect with the Lightning interface or USB interface of mobile device, by the way that multiple ears are arranged
Machine transplanting of rice seat, and be also provided with detection circuit and control circuit, what detection circuit can judge earphone socket insertion be earphone also
It is charge power supply, it is charging of mobile devices that control circuit, which controls the charge power supply, is able to use family and is occupying mobile device
It while Lightning interface or USB interface listen song, can also charge to mobile device, multiple earphones can also be inserted into,
Meets the needs of different users.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of digital interface adapter provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram at another visual angle of digital interface adapter provided in an embodiment of the present invention；
Fig. 3 is the functional block diagram of digital interface adapter provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of the detection circuit of digital interface adapter provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of the control circuit of digital interface adapter provided in an embodiment of the present invention.
Wherein appended drawing reference is as follows:
Digital interface adapter 100；Shell 101；Connecting line 102；Earphone socket 103；Universal asynchronous receiving-transmitting transmitter connects
Mouth 104；Digital audio interface 105；Switch 106；Volume increasing key 107；Play button 108；Volume down key 109；Music
Component 110；Microcontroller 111；Earphone socket pin 112；Audio processing modules 113；Detection circuit 200；Amplifier 201；Together
Phase input terminal 202；Inverting input terminal 203；Signal output end 204；First triode 205；First base stage 206；First emitter
207；First collector 208；Diode 209；Control circuit 300；Second triode 301；Second base stage 302；Second emitter
303；Second collector 304；Field-effect tube 305；Source electrode 306；Drain electrode 307；Grid 308；Charge power supply 400；Peripheral hardware audio solution
Decoding apparatus 500；Mobile device 600.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Referring to Fig.1 and 2, being the structural schematic diagram of digital interface adapter 100 provided in an embodiment of the present invention.It is described
Digital interface adapter 100 include shell 101, connecting line 102 and multiple earphone sockets 103, the connecting line 102 with it is described
One end of shell 101 connects, and the multiple earphone socket 103 is set to the other end of the shell 101.
Specifically, being additionally provided with circuit board in the shell 101, one end of the connecting line 102 and the circuit board connect
It connects, the other end of the connecting line 102 is provided with a terminals, and the terminals are used to and mobile device 600 (please referring to Fig. 3)
Connection.The mobile device 600 can be mobile phone, plate, MP3, MP4 etc., the mobile phone can be iPhone or
Android mobile phone or Microsoft Windows Phone.The terminals can be lightning (Lightning) terminal or general serial
Bus (Universal Serial Bus, USB) terminal.Lightning terminal be Apple Inc. production mobile phone (iPhone),
The equipment-specific connecting terminals such as plate (iPad), iPod can be used for charging for these audio frequency apparatuses, while can also be by hand
The digital audio output of the audio frequency apparatuses such as machine, plate is integrated on Lightning terminal, that is, realizes that charging is shared with audio output
One port Lightning.USB terminal is an external bus standard, for the connection of specification computer and external equipment and logical
News.
When user needs to listen song, the terminal of the connecting line 102 of earphone is inserted into the earphone socket 103, Ke Yiyong
To listen song, it is preferred that using the earphone socket 103 of the general 3.5mm in market.Earphone socket 103 can be also used for charging, and will count
It is inserted into the earphone socket 103 according to one end of line, the other end of data line is inserted into power supply, it is preferred that use mobile power source.
Certainly, the setting position of earphone socket 103 be not limited to the shell 101 with the connecting line 102 opposition
Side, in other specific embodiments, other positions can also be arranged in the earphone socket 103.Earphone in the present embodiment
The number of socket 103 is two, and the needs of two earphone sockets 103 are not only able to meet the charging of the side Bian Tingge is arranged, can be with
Material is saved, occupied space is saved, in other specific embodiments, other numbers can also be arranged in earphone socket 103, such as
3,4 etc..
Universal asynchronous receiving-transmitting transmitter (Universal Asynchronous is provided on the shell 101
Receiver/Transmitter, UART) interface 104.In the present embodiment, the universal asynchronous receiving-transmitting transmitter interface 104 is set
It is placed in the side wall of the shell 101, the universal asynchronous receiving-transmitting transmitter interface 104 can be set by data connecting line and hardware
Standby (such as projector, camera shooting, single-chip microcontroller etc.) connects, and the mobile device 600 is by the digital interface adapter 100 to hard
Part equipment is controlled, such as can be communicated by the correspondence application program on mobile phone to projector, camera shooting, single-chip microcontroller etc.
Control.
It is additionally provided with digital audio interface 105 on the shell 101, in the present embodiment, the digital audio interface 105 is adopted
With SPDIF interface.The SPDIF interface can be used for through data connecting line and peripheral hardware audio decoding apparatus 500 (please referring to Fig. 3)
Connection, the peripheral hardware audio decoding apparatus 500 can be sound equipment, can also make earphone etc..SPDIF is a kind of current number of prevalence
Word signal transmission standard can directly extract the digitized audio message at digital interface end, exported in a manner of SPDIF to
The sound quality of stereo set can be improved in rear end, such as stereo set etc..
Setting SPDIF interface makes signal by wired output, and entire signal is highly stable, will not be as nothings such as WiFi, bluetooths
Line signal is such, and multi signal disturbed condition is encountered under signal complex environment, causes the broadcasting of music intermittent, user's body
It tests very bad.And the signal for wired output that current mobile device 600 is applied to, is analog signal mostly, although ratio really
Wireless stabilizes, but sound quality is bad, and user experience is still bad.So digital interface adapter 100 of the invention passes through
SPDIF interface and corresponding technology can accomplish that sound quality is outstanding, while take into account stability again.
It is additionally provided with music component 110 on the shell 101, what it is in the earphone socket 103 insertion is earphone, is used
When family carries out listening song using earphone, music switching can directly be carried out by the music component 110.Specifically, described
Music component 110 includes volume increasing key 107, play button 108 and volume down key 109,107 He of volume increasing key
The volume for the music that the volume down key 109 can be played with direct regulation and control, the play button 108 can be to the sound of broadcasting
Pleasure plays out or suspends.By the way that music component 110 is arranged on the digital interface adapter 100, realize directly logical
It crosses 100 pairs of broadcasting music of the digital interface adapter to regulate and control, does not need user and carry out cutting song on the mobile device 600,
It is more convenient to use.The shell 101 is additionally provided with switch 106, and the switch 106 is set to the universal asynchronous receiving-transmitting transmission
The opposite of device interface 104 and digital audio interface 105, for controlling the open or close of the digital interface adapter.
Referring to FIG. 3, being the functional block diagram of digital interface adapter 100 provided in an embodiment of the present invention.Specifically, institute
Stating digital interface adapter 100 further includes detection circuit 200, microcontroller 111, control circuit 300, audio processing modules 113
And earphone socket 103, the detection circuit 200, microcontroller 111, earphone socket 103 and control circuit 300 are respectively provided with
In on the circuit board, what the detection circuit 200 was used to judge the insertion of earphone socket 103 is earphone or charge power supply
400, the control circuit 300 is for controlling the charge power supply 400 as the mobile device 600 charging.
Specifically, the detection circuit 200 is examined when the earphone or charge power supply 400 are inserted into earphone socket 103
Judgement is surveyed, and the signal that will test after judgement is transferred to the microcontroller 111, the microcontroller 111 can pass through reception
To low and high level judged that judgement is that earphone accesses the earphone that the earphone socket 103 or charge power supply 400 access and inserts
Seat 103.When earphone socket 103 is that charge power supply 400 accesses, the microcontroller 111 controls 300 pairs of institutes of the control circuit
Charge power supply 400 is stated to be controlled, make the charge power supply 400 directly to the connecting line 102 connection mobile device 600 into
Row charging；When earphone socket 103 is earphone access, then it cannot charge to the mobile device 600, insert the earphone
Seat 103 plays the role of audio interface, i.e., the signal that mobile device 600 is sent to the microcontroller 111 passes through at audio
Reason module 113 is sent to peripheral hardware audio decoding apparatus 500, such as earphone sound equipment etc. after handling.
Referring to FIG. 4, being the circuit diagram of the detection circuit 200 of digital interface adapter 100 provided in an embodiment of the present invention.
The detection circuit includes amplifier 201, the first triode 205, diode 209 and multiple resistance.
Earphone socket pin 112 passes through the resistance R1 being sequentially connected in series and resistance R3 ground connection, the inverting input terminal of amplifier 201
203 are electrically connected between resistance R1 and resistance R3.The earphone socket pin 112 is generally connected with the voltage of 3.3V, described
Earphone socket pin 112 is also connected with resistance R2 and resistance R4 in turn, and one end of the resistance R4 is connected with diode 209, institute
Resistance R4 is stated for lowering the potential difference at 209 both ends of diode.One end of diode 209 is connect with resistance R4, diode 209
The non-inverting input terminal 202 of other end connection amplifier 201.The conducting direction of diode 209 be from 112 side of earphone socket pin
To towards 201 direction of amplifier.
The signal output end 204 of amplifier 201 connects resistance R5, the first base stage of the first triode of resistance R5 connection 205
206, the first emitter 207 of the first triode 205 is connected with 3.3V power supply, and the first of 3.3V power supply and the first triode 205
Resistance R6 is connected between base stage 206.First collector 208 of the first triode 205 connects microcontroller 111, specifically,
First collector 208 is connect with the detection foot of microcontroller 111.
The working principle of detection circuit 200 is: when there is earphone to be connected to earphone socket 103, earphone socket pin 112 connects
Logical, the inverting input terminal 203 of amplifier 201 is to 201 cathode input high level signal of amplifier at this time, the first triode 205
Base potential is lower, the conducting of the first triode 205.In the present embodiment, the voltage of feeder ear is 3.3V~5V, the voltage of feeder ear
After the equipment such as earphone, the first triode 205 conducting, the voltage of feeder ear is detected by the detection foot of microcontroller 111
It arrives, detection circuit 200 is completed to detect work and will test signal to pass to microcontroller 111 at this time.
As shown in figure 5, being the circuit diagram of the control circuit 300 of digital interface adapter 100 provided in an embodiment of the present invention.
Fig. 3 and Fig. 5 are please referred to, the output end of the microcontroller 111 connects the 302, the 2nd 3 pole of the second base stage of the second triode 301
Second emitter 303 of pipe 301 is grounded, the grid 308 of the collector connection field-effect tube 305 of the second triode 301, field-effect
The source electrode 306 of pipe 305 is separately connected earphone socket pin 112, and the drain electrode 307 of field-effect tube 305 is then electrically connected with output end,
It is attached to the connecting line 102, realization is further connect with mobile device 600.One end of resistance R8 is electrically connected at earphone
Between socket pins 112 and the source electrode 306 of field-effect tube 305, the other end of resistance R8 is electrically connected at the second triode 301
Between 305 grid 308 of second collector 304 and field-effect tube, the resistance R8 is biasing resistor, for working as the field-effect tube
When 305 conducting, the grid 308 for providing the field-effect tube 305 is powered.Second base stage 302 of second triode 301 also connects
It is connected to a protective resistance R7.
The working principle of control circuit 300 is: carrying out the detection signal of self-detection circuit 200 when microcontroller 111 receives
Afterwards, microcontroller 111 issues the second triode 301 and instructs, so that the second emitter 303 and second of the second triode 301
Breaking between collector 304, earphone socket pin 112 is supplied by the grid 308 that the R8 provides the field-effect tube 305 at this time
Electricity, the drain electrode 307 of field-effect tube 305 is connected to source electrode 306 at this time, realizes the company between earphone socket 103 and connecting line 102
Logical, the 5V voltage that charge power supply 400 is supplied acts on earphone socket 103, is further implemented as the connection of 102 other end of connecting line
Mobile device 600 power.
In conclusion digital interface adapter provided by the invention can be used as the accessory of mobile device (such as mobile phone, plate),
Including shell and connecting line, the connecting line can be connect with the Lightning interface or USB interface of mobile device, by setting
Multiple earphone sockets are set, and are also provided with detection circuit and control circuit, detection circuit can judge earphone socket insertion
It is earphone or charge power supply, it is charging of mobile devices that control circuit, which controls the charge power supply, is able to use family and is occupying shifting
While the Lightning interface or USB interface of dynamic equipment listen song, it can also charge, can also be inserted into mobile device
Multiple earphones, meet the needs of different users.
Increase UART interface may be implemented mobile device and be controlled by the digital interface adapter hardware device
Function, increase SPDIF interface the digitized audio message at digital interface end can directly be extracted, in a manner of SPDIF
It exports to rear end, the sound quality of stereo set can be improved in such as stereo set etc..Make the more function of digital interface adapter of the invention
Energyization meets the different demands of user.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of digital interface adapter, which is characterized in that including shell and connecting line, the connecting line is used for and mobile device
Connection, the shell are additionally provided with multiple earphone sockets, and the earphone socket is for being inserted into earphone or charge power supply, the shell
It is inside provided with circuit board, the circuit board includes detection circuit and control circuit, and the detection circuit is for judging the earphone
Socket insertion is the earphone or the charge power supply, and the control circuit is the shifting for controlling the charge power supply
Dynamic equipment charge；
The detection circuit includes amplifier, the first triode, diode and multiple resistance, and the amplifier includes with mutually defeated
Enter end, inverting input terminal and signal output end, the base stage of first triode and the signal output end of the amplifier
It is electrically connected, the inverting input terminal and power input port are electrically connected, the emitter of first triode and described same
Phase input terminal is respectively connected with internal electric source, and the collector of first triode and the detection foot of microcontroller are electrically connected；
When there is earphone to be connected to earphone socket, the connection of earphone socket pin, the inverting input terminal of amplifier is to amplifier at this time
Cathode input high level signal, the base potential of the first triode are lower, the first triode ON.
2. digital interface adapter according to claim 1, which is characterized in that the circuit board includes microcontroller,
The microcontroller is used for the control circuit control when the detection circuit detects the earphone socket access charge power supply
Charge power supply processed is the charging of mobile devices by the digital interface adapter.
3. digital interface adapter according to claim 1, which is characterized in that the non-inverting input terminal and the internal electricity
It is connected with diode between source, the conducting direction of the diode is by the internal electric source towards the non-inverting input terminal.
4. digital interface adapter according to claim 3, which is characterized in that the diode and the internal electric source it
Between be connected with a resistance, the resistance for reducing the diode both ends potential.
5. digital interface adapter according to claim 2, which is characterized in that the control circuit include field-effect tube and
The base stage of second triode, the output interface of the microcontroller and second triode is electrically connected, the field-effect tube
Drain electrode and the connecting line be electrically connected, the grid of the field-effect tube and the collector of second triode electrically connect
It connects, the source electrode of the field-effect tube is connect with the earphone socket, the emitter ground connection of second triode.
6. digital interface adapter according to claim 5, which is characterized in that the grid of the field-effect tube and the ear
It is connected with biasing resistor between machine transplanting of rice seat, is used for when field-effect tube conducting, the bias voltage of the fet gate
For second triode power supply.
7. digital interface adapter according to claim 1, which is characterized in that one end of the connecting line and the circuit
Plate connection, the other end of the connecting line are terminals, and the terminals with the mobile device for connecting, the terminals
For lightning terminal or universal serial bus terminal.
8. digital interface adapter according to claim 1, which is characterized in that the shell is additionally provided with universal asynchronous receipts
Transmitter interfaces are sent out, hardware device is controlled by the digital interface adapter for the mobile device.
9. digital interface adapter according to claim 1, which is characterized in that the shell is additionally provided with digital audio and connects
Mouthful, for connecting with peripheral hardware audio decoding apparatus, the sound quality of peripheral hardware audio decoding apparatus is improved, the digital audio interface uses
SPDIF interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243436.2A CN105868141B (en) | 2016-04-18 | 2016-04-18 | Digital interface adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243436.2A CN105868141B (en) | 2016-04-18 | 2016-04-18 | Digital interface adapter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105868141A CN105868141A (en) | 2016-08-17 |
| CN105868141B true CN105868141B (en) | 2019-09-27 |
Family
ID=56632571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610243436.2A Expired - Fee Related CN105868141B (en) | 2016-04-18 | 2016-04-18 | Digital interface adapter |
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| CN (1) | CN105868141B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018049688A1 (en) * | 2016-09-19 | 2018-03-22 | 深圳市魅动智能股份有限公司 | Rechargeable digital earphone |
| CN106572414A (en) * | 2016-11-10 | 2017-04-19 | 深圳市冠旭电子股份有限公司 | Earphone |
| CN107257406B (en) * | 2017-05-31 | 2019-03-05 | 维沃移动通信有限公司 | A kind of method and terminal to charge and audio data is handled |
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| CN105868141A (en) | 2016-08-17 |
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