CN108196818A - Earphone recognition apparatus - Google Patents
Earphone recognition apparatus Download PDFInfo
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- CN108196818A CN108196818A CN201711489463.9A CN201711489463A CN108196818A CN 108196818 A CN108196818 A CN 108196818A CN 201711489463 A CN201711489463 A CN 201711489463A CN 108196818 A CN108196818 A CN 108196818A
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- 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
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Abstract
The present invention relates to a kind of earphone recognition apparatus, including main control chip, first interface, second interface, third interface and the 4th interface；First interface, second interface, third interface and the 4th interface are located in earphone jack, it is respectively connected to a port of earphone, the first common voltage test side connection first interface of main control chip, the second common voltage test side connection second port of main control chip, the first headset plug test side connection third interface of main control chip, the second headset plug test side of main control chip connects the 4th interface；Main control chip obtains first voltage, the second voltage of the second common voltage test side, the tertiary voltage of the first headset plug test side and the 4th voltage of the second headset plug test side of the first common voltage test side, according to first voltage and second voltage identification earphone insert state, whether headset plug is accessed according to tertiary voltage and the 4th voltage identification third interface or the 4th interface, the audio frequency output channel of earphone is inserted into configuration.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of earphone recognition apparatus.
Background technology
Earphone is people's extremely common a kind of electronic equipment in daily life, and type is various, model is different.Usually
In the case of, earphone includes headset plug end (such as L channel end, right channel end), the multiple ports in common end and electret wheat end,
It after earphone accesses corresponding playback equipment, needs accordingly to identify above-mentioned multiple ports of earphone, and is tied according to identification
Fruit complete earphone match postpone could be played out by earphone equipment audio listen to and user speech output.
Different classes of earphone has different identification methods, and traditional earphone identification technology is needed by different classes of ear
Specific identification chip (such as QSC6155, PM8028) and corresponding peripheral cell corresponding to machine realize that identification is complicated.
Invention content
Based on this, it is necessary to for traditional earphone recognition apparatus it is complicated the technical issues of, a kind of earphone is provided and is known
Other device.
A kind of earphone recognition apparatus, which is characterized in that including main control chip, first interface, second interface, third interface and
4th interface；
The first interface, second interface, third interface and the 4th interface are arranged in earphone jack, are respectively connected to earphone
Any one port in plug end, common end and electret wheat end, the first common voltage test side of the main control chip connect
Connect first interface, the second common voltage test side connection second port of main control chip, the first headset plug inspection of main control chip
End connection third interface is surveyed, the second headset plug test side of main control chip connects the 4th interface；
The main control chip obtains the first voltage of the first common voltage test side, the second common voltage test side respectively
4th voltage of second voltage, the tertiary voltage of the first headset plug test side and the second headset plug test side, according to institute
First voltage and the insert state of second voltage identification earphone are stated, according to the tertiary voltage and the 4th voltage identification third interface
Or the 4th interface whether access headset plug, and the audio frequency output channel of earphone is inserted into according to recognition result configuration.
First interface, second interface, third interface and the 4th interface are arranged on earphone jack by above-mentioned earphone recognition apparatus
In, it is public by the first of main control chip with any one port being respectively connected in headset plug end, common end and electret wheat end
Common voltage test side connects first interface, and the second common voltage test side connection second port, the first headset plug test side connects
Third interface is connect, the second headset plug test side connects the 4th interface, the first common electrical is obtained respectively by above-mentioned main control chip
Press the first voltage of test side, the second voltage of the second common voltage test side, the first headset plug test side tertiary voltage,
And second headset plug test side the 4th voltage, with according to first voltage and second voltage identification earphone insert state,
Whether headset plug is accessed, and according to identification according to the tertiary voltage and the 4th voltage identification third interface or the 4th interface
As a result the audio frequency output channel of earphone is inserted into configuration, has been carried out effective simplification to the identification structure of be inserted into earphone, has been improved
To the recognition efficiency of be inserted into earphone, the corresponding identification cost of reduction.
The main control chip is respectively by the first headset plug test side and the second headset plug in one of the embodiments,
The output voltage of test side is disposed as setting voltage value, the pull down resistor of the first common voltage test side is opened, if recognizing
The first voltage is equal to ground terminal voltage, then judges that headset plug is not inserted into earphone jack；If it is big to recognize the first voltage
In ground terminal voltage, then judge that headset plug is inserted into earphone jack.
The present embodiment can be by the pull down resistor of the first common voltage test side of unlatching, according to corresponding first voltage to ear
Whether machine transplanting of rice head, which is inserted into earphone jack, is accurately identified.
The main control chip is respectively by the first headset plug test side and the second headset plug in one of the embodiments,
The output voltage of test side is disposed as setting voltage value, the pull down resistor of the second common voltage test side is opened, if recognizing
The second voltage is equal to ground terminal voltage, then judges that headset plug is not inserted into earphone jack；If it is big to recognize the second voltage
In ground terminal voltage, then judge that headset plug is inserted into earphone jack.
The present embodiment can be by the pull down resistor of the second common voltage test side of unlatching, according to corresponding second voltage to ear
Whether machine transplanting of rice head, which is inserted into earphone jack, is accurately identified.
After main control chip judgement headset plug is inserted into earphone jack in one of the embodiments, the is set respectively
The output voltage values of one headset plug test side and the output voltage values of the second headset plug test side, are detecting the third
When voltage is equal with the 4th voltage, judgement third interface access headset plug.
The headset plug that the present embodiment can access third interface accurately identifies.
As one embodiment, after the main control chip judgement third interface access headset plug, close the first earphone and insert
The output of head test side either the second headset plug test side is by the first headset plug test side or the second headset plug
Test side is set as earphone common end, and audio frequency output channel is configured for third interface.
The present embodiment can carry out corresponding earphone configuration, to ensure that earphone is follow-up after third interface accesses headset plug
Normal work.
After main control chip judgement headset plug is inserted into earphone jack in one of the embodiments, the is set respectively
The output voltage values of one headset plug test side and the output voltage values of the second headset plug test side, are detecting the third
When voltage and unequal the 4th voltage, judgement the 4th interface access headset plug.
The headset plug that the present embodiment can access the 4th interface accurately identifies.
As one embodiment, the main control chip sets the first electret wheat input terminal and the input of the second electret wheat
End, the first electret wheat input terminal are passed through by the first capacitance connection third interface, the second electret wheat input terminal
The 4th interface of second capacitance connection, the third interface by first resistor connect outside bias power supply circuit, the described 4th
Interface connects the bias power supply circuit by second resistance.
As one embodiment, the main control chip is detecting the 4th voltage equal to first voltage or the second electricity
During pressure, headset plug of the headset plug of the 4th interface for OMTP standards is inserted into judgement；Detecting that the tertiary voltage is equal to
When first voltage or second voltage, headset plug of the headset plug of the 4th interface for CTIA standards is inserted into judgement.
The present embodiment can accordingly identify the headset plug type for being inserted into the 4th interface.
As one embodiment, if the headset plug is the headset plug of OMTP standards, the main control chip closes the
Headset plug test side is set as earphone common end by the output of one headset plug test side, by the first electret wheat input terminal
The input pin of electret microphone is set as, accesses the bias voltage that the bias power supply circuit opens electret microphone,
And audio frequency output channel is configured according to the earphone that OMTP standards are insertion.
As one embodiment, if the headset plug is the headset plug of CTIA standards, the main control chip closes the
First headset plug test side is set as earphone common end by the output of two headset plug test sides, and the second electret wheat is defeated
Enter the input pin that end is set as electret microphone, access the biased electrical that the bias power supply circuit opens electret microphone
Pressure, and be that audio frequency output channel is configured in the earphone being inserted into according to CTIA standards.
Description of the drawings
Fig. 1 is the earphone recognition apparatus structure diagram of one embodiment；
Fig. 2 is the earphone recognition apparatus structure diagram of one embodiment；
Fig. 3 is the pin configuration schematic diagram of the DAC_L or DAC_R of one embodiment；
Fig. 4 is the earphone recognition apparatus structure diagram of one embodiment.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
With reference to figure 1, Fig. 1 show the earphone recognition apparatus structure diagram of one embodiment, including main control chip 20,
One interface 11, second interface 12,13 and the 4th interface 14 of third interface；
The first interface 11, second interface 12,13 and the 4th interface 14 of third interface are arranged in earphone jack, respectively
Access any one port in headset plug end, common end and electret wheat end, the first common electrical of the main control chip 20
Press test side DAC_L connections first interface 11, the second common voltage test side DAC_R connection second ports of main control chip 20
12, the first headset plug test side VCMO0 connection thirds interface 13 of main control chip 20, the second headset plug of main control chip 20
The 4th interface 14 of test side VCMO1 connections；
The main control chip 20 obtains the first voltage V of the first common voltage test side DAC_L respectivelyad1, the second common electrical
Press the second voltage V of test side DAC_Rad2, the first headset plug test side VCMO0 tertiary voltage Vad3And second earphone
The 4th voltage V of plug test side VCMO1ad4, according to the first voltage Vad1With second voltage Vad2Identify the insertion shape of earphone
State, according to the tertiary voltage Vad3With the 4th voltage Vad4Whether identification third interface 13 or the 4th interface 14 access earphone and insert
Head, and the audio frequency output channel for being inserted into earphone is configured according to recognition result.
Above-mentioned main control chip 20 can be that coherent detection program can be written to carry out each pin output control and voltage detecting
Intelligent chip can be arranged in the playback equipment (such as tablet computer, mobile phone) where earphone jack.Specifically, master control
The internal structure of chip 20 can with reference chart 2 Suo Shi include Multipexer selector MUX and port voltage detection circuit ADC, on
Stating main control chip 20 can be by the multiple selector MUX built in it to its each leads ends (such as the first common voltage test side
DAC_L, the second common voltage test side DAC_R, the first headset plug test side VCMO0 and the second headset plug test side
VCMO1 control) is identified and exported into row related signal, and each leads ends pair are carried out by above-mentioned port voltage detection circuit ADC
Answer the detection of voltage.
Earphone recognition apparatus provided in this embodiment connects first interface 11, second interface 12, third interface 13 and the 4th
Mouthfuls 14 are arranged in earphone jack, with any one port being respectively connected in headset plug end, common end and electret wheat end,
By the first common voltage test side DAC_L connections first interface 11 of main control chip 20, the second common voltage test side DAC_R connects
Second port 12, the first headset plug test side VCMO0 connection thirds interface 13 are connect, the second headset plug test side VCMO1 connects
The 4th interface 14 is connect, obtains the first voltage pressure of the first common voltage test side DAC_L respectively by above-mentioned main control chip 20
Vad1, the second common voltage test side DAC_R second voltage Vad2, the first headset plug test side VCMO0 tertiary voltage
Vad3And second headset plug test side VCMO1 the 4th voltage Vad4, with according to first voltage Vad1With second voltage Vad2Know
The insert state of other earphone, according to the tertiary voltage Vad3With the 4th voltage Vad4Identify third interface 13 or the 4th interface 14
Headset plug whether is accessed, and the audio frequency output channel of earphone, the knowledge to be inserted into earphone are inserted into according to recognition result configuration
Other structure has carried out effective simplification, improves the recognition efficiency to be inserted into earphone, the corresponding identification cost of reduction.
The main control chip is respectively by the first headset plug test side and the second headset plug in one of the embodiments,
The output voltage of test side is disposed as setting voltage value, the pull down resistor of the first common voltage test side is opened, if recognizing
The first voltage is equal to ground terminal voltage, then judges that headset plug is not inserted into earphone jack；If it is big to recognize the first voltage
In ground terminal voltage, then judge that headset plug is inserted into earphone jack.
Above-mentioned setting voltage value can be configured according to the model features of main control chip, can specifically be set to one
It is a to be more than ground terminal voltage VgndVoltage value, if the output of above-mentioned first headset plug test side and the second headset plug test side
Voltage is Vplug, main control chip detecting first voltage Vad1Equal to ground terminal voltage, i.e. Vad1=VgndWhen, judge headset plug
It is not inserted into earphone jack；Detecting first voltage Vad1More than ground terminal voltage, i.e. Vad1>Vgnd, particularly detect above-mentioned first
Voltage Vad1=(Vplug* R3/ (Re+R3)) when, it is possible to determine that headset plug has been inserted into earphone jack, wherein, above-mentioned R3 is first
The resistance value of common voltage test side pull down resistor, Re are earphone speaker impedance, can be preset according to correlation experience value.
The present embodiment can be by the pull down resistor of the first common voltage test side of unlatching, according to the first voltage pair detected
Whether headset plug, which is inserted into earphone jack, is accurately identified.
The main control chip is respectively by the first headset plug test side and the second headset plug in one of the embodiments,
The output voltage of test side is disposed as setting voltage value, the pull down resistor of the second common voltage test side is opened, if recognizing
The second voltage is equal to ground terminal voltage, then judges that headset plug is not inserted into earphone jack；If it is big to recognize the second voltage
In ground terminal voltage, then judge that headset plug is inserted into earphone jack.
Above-mentioned setting voltage value can be configured according to the model features of main control chip, can specifically be set to one
It is a to be more than ground terminal voltage VgndVoltage value, if the output of above-mentioned first headset plug test side and the second headset plug test side
Voltage is Vplug, main control chip detecting second voltage Vad2Equal to ground terminal voltage, i.e. Vad2=VgndWhen, judge headset plug
It is not inserted into earphone jack；Detecting second voltage Vad2More than ground terminal voltage, i.e. Vad2>Vgnd, particularly detect above-mentioned second
Voltage Vad2=(Vplug* R3/ (Re+R3)) when, it is possible to determine that headset plug has been inserted into earphone jack, wherein, above-mentioned R3 is second
The resistance value of common voltage test side pull down resistor, Re are earphone speaker impedance, can be preset according to correlation experience value.
The present embodiment can be by the pull down resistor of the second common voltage test side of unlatching, according to the second voltage pair detected
Whether headset plug, which is inserted into earphone jack, is accurately identified.
As one embodiment, main control chip is in the first common voltage test side DAC_L or the second common voltage test side
The internal structure schematic diagram of DAC_R can with refering to what is shown in Fig. 3, pin port therein (the first common voltage test side DAC_L or
Second common voltage test side DAC_R) can pull down resistor R3 be connected by a switchgear, main control chip can be by upper
State unlatching and disconnection that switchgear controls corresponding pull down resistor；First common voltage test side DAC_L or the second common voltage
The pin port of test side DAC_R can also connect the port voltage detection circuit built in main control chip, carry out corresponding port electricity
The detection of pressure.
In one embodiment, after above-mentioned main control chip judgement headset plug is inserted into earphone jack, the first ear is set respectively
The output voltage values of machine transplanting of rice head test side and the output voltage values of the second headset plug test side, are detecting the tertiary voltage
Vad3With the 4th voltage Vad4When equal, judgement third interface access headset plug.
The output voltage values of above-mentioned first headset plug test side and the output voltage values of the second headset plug test side can
It is set accordingly with the model features respectively according to corresponding main control chip, under usual situation, above-mentioned first headset plug inspection
Output voltage values and the output voltage values of the second headset plug test side for surveying end are unequal；If the first headset plug test side
Output voltage values are Vdet0, the output voltage values of the second headset plug test side are Vdet1, then Vdet0≠Vdet1。
The present embodiment, can by the detection of voltage corresponding to the first headset plug test side and the second headset plug test side
It is accurately identified with the headset plug accessed to third interface, simplifies corresponding identification process.
As one embodiment, after the main control chip judgement third interface access headset plug, close the first earphone and insert
The output of head test side VCMO0 or the second headset plug test side VCMO1, by the first headset plug test side VCMO0
Or second headset plug test side VCMO1 be set as earphone common end, and audio frequency output channel is configured for third interface.
Above-mentioned main control chip can also adjust the audio that earphone is inserted into equipment (playback equipment i.e. where earphone jack)
Parameter, with cooperation insertion earphone use, improve the using effect of earphone.
In the present embodiment, the port voltage detection circuit built in main control chip detects Vad3=Vad4When, main control chip closes
The output of VCMO1 or VCMO0 are closed, VCMO0 or VCMO1 are set as earphone common end, and is 3 foot earphone kind equipments (by the
Three interfaces access the earphone of headset plug) configuration audio frequency output channel, to ensure the accuracy of earphone configuration.
In one embodiment, after the main control chip judgement headset plug is inserted into earphone jack, the first ear is set respectively
The output voltage values of machine transplanting of rice head test side and the output voltage values of the second headset plug test side, are detecting the tertiary voltage
Vad3With the 4th voltage Vad4When unequal, judgement the 4th interface access headset plug.
The output voltage values of above-mentioned first headset plug test side and the output voltage values of the second headset plug test side can
It is set accordingly with the model features respectively according to corresponding main control chip, under usual situation, above-mentioned first headset plug inspection
Output voltage values and the output voltage values of the second headset plug test side for surveying end are unequal；If the first headset plug test side
Output voltage values are Vdet0, the output voltage values of the second headset plug test side are Vdet1, then Vdet0≠Vdet1。
Above-mentioned 4th interface can access a plurality of types of headset plugs, such as CTIA standard headphone plugs or OMTP standards
Headset plug.Specifically, in Vad3 ≠ Vad4, and Vad1(or Vad2)=Vad3When, the headset plug of the 4th interface access belongs to
CTIA standards, main control chip can be the earphone kind equipment configuration audio frequency output channel being inserted into according to above-mentioned CTIA standards；In Vad3
≠Vad4, and Vad1(or Vad2)=Vad4When, the headset plug of the 4th interface access belongs to OMTP standards, and main control chip can be according to
OMTP standards are the earphone kind equipment configuration audio frequency output channel being inserted into.Above-mentioned main control chip can be directed to the access of the 4th interface
Headset plug carries out type identification, audio frequency parameter is adjusted according to the type identified, the type earphone to be coordinated accordingly to play
It is used in equipment, realizes self-adapting estimation and configuration of the above-mentioned playback equipment to be inserted into earphone.
The present embodiment, can by the detection of voltage corresponding to the first headset plug test side and the second headset plug test side
It is accurately identified with the headset plug accessed to the 4th interface, simplifies corresponding identification process.
As one embodiment, refering to what is shown in Fig. 4, above-mentioned main control chip 20 can also set the first electret wheat input terminal
MIC0 and the second electret wheat input terminal MIC1, the first electret wheat input terminal MIC0 connects third by the first capacitance 31
Interface 13, the second electret wheat input terminal MIC1 connect the 4th interface 14, the third interface 13 by the second capacitance 32
External bias power supply circuit is connected by first resistor 33, the 4th interface 14 connects the biasing by second resistance 34
Power circuit.
Above-mentioned first resistor 33 and second resistance 34 are respectively biasing resistor, and above-mentioned first capacitance, 31 and second capacitance 32 divides
It Wei not capacitance.
In the present embodiment, main control chip 20 can also carry out the first electret wheat input terminal MIC0 and the second electret wheat is defeated
Enter to hold the setting of MIC1, as shown in figure 4, above-mentioned first electret wheat input terminal MIC0 can pass sequentially through the first capacitance 31 and
One resistance 33 connects external bias power circuit, and the second electret wheat input terminal MIC1 can pass sequentially through the second capacitance 32 and the
Two resistance 34 connect external bias power circuit, so that main control chip passes through above-mentioned first electret wheat input terminal MIC0 or second
Electret wheat input terminal MIC1 opens the bias voltage of electret microphone, and the electret microphone for be inserted into earphone is matched
It puts.
As one embodiment, above-mentioned main control chip is detecting the 4th voltage Vad4Equal to first voltage Vad1Or
Second voltage Vad2When, headset plug of the headset plug of the 4th interface for OMTP standards is inserted into judgement；Detecting the third
Voltage Vad3 is equal to first voltage Vad1Or second voltage Vad2When, the headset plug that the 4th interface is inserted into judgement is CTIA standards
Headset plug.
As one embodiment, if the headset plug is the headset plug of OMTP standards, the main control chip closes the
Headset plug test side VCMO1 is set as earphone common end, by the first electret by the output of one headset plug test side VCMO0
Body wheat input terminal MIC0 is set as the input pin of electret microphone, accesses the bias power supply circuit and opens electret mike
The bias voltage of wind, and be that audio frequency output channel is configured in the earphone being inserted into according to OMTP standards.
Above-mentioned main control chip can also adjust the audio frequency parameter of playback equipment that earphone is inserted into according to OMTP standards, to match
Use of the earphone on playback equipment is closed, realizes self-adapting estimation and configuration of the above-mentioned playback equipment to be inserted into earphone.
In the present embodiment, main control chip detects Vad3≠Vad4, and Vad1(or Vad2)=Vad4When, it can close VCMO0's
Output, earphone common end is set as by VCMO1, and MIC0 is set as to the input pin of electret microphone, opens electret wheat
The bias voltage of gram wind, and be that audio frequency output channel is configured in the earphone kind equipment being inserted into according to OMTP standards, adjustment earphone is inserted
Enter the audio frequency parameter of playback equipment, to ensure the accuracy in above-mentioned earphone class setting configuration process.
As one embodiment, if the headset plug is the headset plug of CTIA standards, the main control chip closes the
First headset plug test side VCMO0 is set as earphone common end, by second by the output of two headset plug test side VCMO1
Electret wheat input terminal MIC1 is set as the input pin of electret microphone, accesses the bias power supply circuit and opens electret
The bias voltage of microphone, and be that audio frequency output channel is configured in the earphone being inserted into according to CTIA standards.
Above-mentioned main control chip can also adjust the audio frequency parameter of playback equipment that earphone is inserted into according to CTIA standards, to match
Use of the earphone on playback equipment is closed, realizes self-adapting estimation and configuration of the above-mentioned playback equipment to be inserted into earphone.
In the present embodiment, main control chip is detecting Vad3≠Vad4, and Vad1(or Vad2)=Vad3When, close the defeated of VCMO1
Go out, VCMO0 is set as earphone common end, MIC1 is set as to the input pin of electret microphone, open electret mike
The bias voltage of wind, and be that audio frequency output channel is configured in the earphone kind equipment being inserted into according to CTIA standards, adjustment earphone is inserted into
The audio frequency parameter of playback equipment, it is ensured that the accuracy of corresponding earphone configuration.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of earphone recognition apparatus, which is characterized in that including main control chip, first interface, second interface, third interface and
Four interfaces；
The first interface, second interface, third interface and the 4th interface are arranged in earphone jack, are respectively connected to headset plug
Any one port in end, common end and electret wheat end, the first common voltage test side connection of the main control chip the
One interface, the second common voltage test side connection second port of main control chip, the first headset plug test side of main control chip
Third interface is connected, the second headset plug test side of main control chip connects the 4th interface；
The main control chip obtain respectively the first voltage of the first common voltage test side, the second common voltage test side second
4th voltage of voltage, the tertiary voltage of the first headset plug test side and the second headset plug test side, according to described
The insert state of one voltage and second voltage identification earphone, according to the tertiary voltage and the 4th voltage identification third interface or
Whether the 4th interface accesses headset plug, and the audio frequency output channel of earphone is inserted into according to recognition result configuration.
2. earphone recognition apparatus according to claim 1, which is characterized in that the main control chip respectively inserts the first earphone
The output voltage of head test side and the second headset plug test side is disposed as setting voltage value, opens the detection of the first common voltage
The pull down resistor at end if recognizing the first voltage is equal to ground terminal voltage, judges that headset plug is not inserted into earphone jack；If
It recognizes the first voltage and is more than ground terminal voltage, then judge that headset plug is inserted into earphone jack.
3. earphone recognition apparatus according to claim 1, which is characterized in that the main control chip respectively inserts the first earphone
The output voltage of head test side and the second headset plug test side is disposed as setting voltage value, opens the detection of the second common voltage
The pull down resistor at end if recognizing the second voltage is equal to ground terminal voltage, judges that headset plug is not inserted into earphone jack；If
It recognizes the second voltage and is more than ground terminal voltage, then judge that headset plug is inserted into earphone jack.
4. the earphone recognition apparatus according to Claims 2 or 3, which is characterized in that the main control chip judges headset plug
Be inserted into earphone jack after, set respectively the first headset plug test side output voltage values and the second headset plug test side it is defeated
Go out voltage value, when detecting that the tertiary voltage is equal with the 4th voltage, judgement third interface access headset plug.
5. earphone recognition apparatus according to claim 4, which is characterized in that the main control chip judgement third interface access
After headset plug, the output of the first headset plug test side or the second headset plug test side is closed, by first earphone
Plug test side or the second headset plug test side are set as earphone common end, and audio output is configured for third interface and leads to
Road.
6. the earphone recognition apparatus according to Claims 2 or 3, which is characterized in that the main control chip judges headset plug
Be inserted into earphone jack after, set respectively the first headset plug test side output voltage values and the second headset plug test side it is defeated
Go out voltage value, when detecting that the tertiary voltage and the 4th voltage are unequal, judgement the 4th interface access headset plug.
7. earphone recognition apparatus according to claim 6, which is characterized in that the main control chip sets the first electret wheat
Input terminal and the second electret wheat input terminal, the first electret wheat input terminal pass through the first capacitance connection third interface, institute
The second electret wheat input terminal is stated by the 4th interface of the second capacitance connection, the third interface connects external by first resistor
Bias power supply circuit, the 4th interface connects the bias power supply circuit by second resistance.
8. earphone recognition apparatus according to claim 7, which is characterized in that the main control chip is detecting the described 4th
When voltage is equal to first voltage or second voltage, the headset plug that the 4th interface is inserted into judgement is inserted for the earphone of OMTP standards
Head；When detecting that the tertiary voltage is equal to first voltage or second voltage, the headset plug of the 4th interface is inserted into judgement
Headset plug for CTIA standards.
9. earphone recognition apparatus according to claim 8, which is characterized in that if the headset plug is the ear of OMTP standards
Machine transplanting of rice head, the main control chip close the output of the first headset plug test side, and headset plug test side is set as earphone public affairs
First electret wheat input terminal, is set as the input pin of electret microphone, accesses the bias power supply circuit and open by end altogether
The bias voltage of electret microphone is opened, and is that audio frequency output channel is configured in the earphone being inserted into according to OMTP standards.
10. earphone recognition apparatus according to claim 8, which is characterized in that if the headset plug is CTIA standards
Headset plug, the main control chip close the output of the second headset plug test side, the first headset plug test side are set as
Second electret wheat input terminal is set as the input pin of electret microphone, accesses the bias supply by earphone common end
Circuit opens the bias voltage of electret microphone, and is that audio frequency output channel is configured in the earphone being inserted into according to CTIA standards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489463.9A CN108196818B (en) | 2017-12-30 | 2017-12-30 | Earphone recognition device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638911A (en) * | 2018-12-14 | 2019-04-16 | 珠海市杰理科技股份有限公司 | Charge telecommunication circuit, system, method, intelligent terminal and its accessory |
| CN110430503A (en) * | 2019-08-06 | 2019-11-08 | 合肥联宝信息技术有限公司 | A kind of audio socket |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917659A (en) * | 2010-07-23 | 2010-12-15 | 惠州Tcl移动通信有限公司 | Detection device, method and mobile terminal of earphone circuit |
| CN102404665A (en) * | 2010-09-07 | 2012-04-04 | 中兴通讯股份有限公司 | Earphone interface self-adaptation circuit |
| US20140064512A1 (en) * | 2012-08-29 | 2014-03-06 | Samsung Electronics Co., Ltd. | Earphone connection interface, terminal including the same, and method of operating terminal |
| CN103945317A (en) * | 2014-04-25 | 2014-07-23 | 矽力杰半导体技术(杭州)有限公司 | Detection method and circuit for detecting type of earphone connector |
| CN104683915A (en) * | 2013-11-28 | 2015-06-03 | 展讯通信（上海）有限公司 | Electronic equipment and earphone detection circuit, method and device |
| CN105101001A (en) * | 2015-09-18 | 2015-11-25 | 青岛海信移动通信技术股份有限公司 | Earphone identification device and terminal equipment |
-
2017
- 2017-12-30 CN CN201711489463.9A patent/CN108196818B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917659A (en) * | 2010-07-23 | 2010-12-15 | 惠州Tcl移动通信有限公司 | Detection device, method and mobile terminal of earphone circuit |
| CN102404665A (en) * | 2010-09-07 | 2012-04-04 | 中兴通讯股份有限公司 | Earphone interface self-adaptation circuit |
| US20140064512A1 (en) * | 2012-08-29 | 2014-03-06 | Samsung Electronics Co., Ltd. | Earphone connection interface, terminal including the same, and method of operating terminal |
| CN104683915A (en) * | 2013-11-28 | 2015-06-03 | 展讯通信（上海）有限公司 | Electronic equipment and earphone detection circuit, method and device |
| CN103945317A (en) * | 2014-04-25 | 2014-07-23 | 矽力杰半导体技术(杭州)有限公司 | Detection method and circuit for detecting type of earphone connector |
| CN105101001A (en) * | 2015-09-18 | 2015-11-25 | 青岛海信移动通信技术股份有限公司 | Earphone identification device and terminal equipment |
Non-Patent Citations (2)
| Title |
|---|
| ARPIT MEHTA MAXIM 公司: "利用低功耗比较器自动检测音频附件", 《设计应用》 * |
| CHUN-YEN TSENG ETAL.: "An Integrated 1.2V-to-6V CMOS Charge-Pump for Electret Earphone", 《2007 IEEE SYMPOSIUM ON VLSI CIRCUITS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638911A (en) * | 2018-12-14 | 2019-04-16 | 珠海市杰理科技股份有限公司 | Charge telecommunication circuit, system, method, intelligent terminal and its accessory |
| CN109638911B (en) * | 2018-12-14 | 2020-08-25 | 珠海市杰理科技股份有限公司 | Charging communication circuit, system and method, intelligent terminal and accessory thereof |
| CN110430503A (en) * | 2019-08-06 | 2019-11-08 | 合肥联宝信息技术有限公司 | A kind of audio socket |
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| CN108196818B (en) | 2021-03-19 |
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