CN106550301A - A kind of control method and circuit of earphone output - Google Patents
A kind of control method and circuit of earphone output Download PDFInfo
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- CN106550301A CN106550301A CN201510603736.2A CN201510603736A CN106550301A CN 106550301 A CN106550301 A CN 106550301A CN 201510603736 A CN201510603736 A CN 201510603736A CN 106550301 A CN106550301 A CN 106550301A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention provides the control method and circuit of a kind of earphone output, are related to field of electronic devices, wherein method includes：Acquisition is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal；From default earphone impedance value table corresponding with output, output corresponding with the resistance value of the current earphone is obtained；The output is exported, the automatic adaptation of the volume of the earphone by the method achieving different resistance values improves user experience.
Description
Technical field
The present invention relates to field of electronic devices, more particularly to a kind of control method and circuit of earphone output.
Background technology
In the market earphone species enrich, the earphone of various impedances has, and all configure substantially be
3.5mm headset plugs, and the socket on mobile phone terminal is in order to meet the market demand, also all Uniting into
3.5mm sockets, so ready for insertion into the earphone that various impedances are different.
It is different yet with earphone impedance, under ad eundem volume in terminal, the volume of earphone output
Be it is different, such as earphone export 0.5Vrms virtual values when, insert 32 ohm PlayGear Stealth,
In-Ear Headphones with the loudness that user during 200 ohm of headband receiver of insertion hears be it is diverse, it is past
Toward be ear type, In-Ear little impedance earphone as sensitivity is very high, the sound heard is just very big, and hinders greatly
The volume that anti-headband receiver is heard under peer terminal amplitude output signal is just little.If user starts to use
Be 200 ohm of earphone, in order to obtain suitable loudness, on mobile phone terminal volume adjust must than larger,
And very big even deafening sound can be heard suddenly when he is replaced with little impedance earphone, this is to not only right
It is bad in Consumer's Experience and be likely to result in damage for listening.If user's is little impedance earphone, when him
Originally again less than enough volumes when being replaced with big impedance earphone, it is therefore desirable to readjust volume, for
Consumer's Experience also has an impact.For another example when terminal carries extra earphone power amplifier, usual this earphone power amplifier
Driving power is all very big, if user adjusts terminal level of sound volume very big, and if not noting, when slotting
When entering little impedance earphone, earphone loudness can be very big, sound shake ear.
In order to make up such deficiency be accomplished by it is a kind of can automatic identification headset type, impedance technology come gram
Defect as clothes.It is to do a prompting in terminal interface first to have method at present, such as when user is adjusted
When volume exceedes certain grade, end-user interface can eject prompting message, point out user's volume possibility bigger than normal
Affect Consumer's Experience or ear damage.This method limitation is very big, and very dumb.It is another kind of
Method is exactly to give earphone power amplifier series resistance, carries out partial pressure, but this method can be to the whole of earphone power amplifier
Body output is impacted, simultaneously because electric resistance partial pressure can cause tonequality to lose, is in this way limited to
Property is also very big.
The content of the invention
In order to overcome the problems referred to above, the present invention to provide the control method and circuit of a kind of earphone output, energy
Reach automatic identification earphone impedance value to export suitable output, solve due to the difference of earphone direct impedance
The not good problem of the Consumer's Experience for bringing.
In order to solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：
A kind of control method of earphone output, including：
Acquisition is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal；
From default earphone impedance value table corresponding with output, the impedance with the current earphone is obtained
It is worth corresponding output；
Export the output.
Alternatively, the step of resistance value for obtaining the current earphone being inserted in the receiver J-Horner of terminal, includes：
Control the disconnection of the switch in the switch arrays being electrically connected with the headset plug and close, formed many
Individual earphone impedance test circuit；
The resistance and the earphone for gathering earphone each group part in the plurality of earphone impedance test circuit respectively hinders
The resistance corresponding relation of the total resistance of anti-test circuit；
The resistance corresponding relation for gathering respectively is constructed as into value relatable matrix, according to the value relatable
Matrix, is calculated the resistance value of the earphone.
Alternatively, from default earphone impedance value table corresponding with output, obtain and be currently inserted into ear
The step of resistance value of the earphone of machine transplanting of rice mouth corresponding output, includes：
From default earphone impedance value table corresponding with output, the resistance value of the current earphone is determined
Residing demarcation interval；
According to the default demarcation interval and the corresponding relation of output, obtain and the current earphone
The corresponding output of demarcation interval residing for resistance value.
Alternatively, from default earphone impedance value table corresponding with output, determine the current earphone
Resistance value residing for demarcation interval the step of also include：
Second resistance value of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired, presses
Go out multiple demarcation intervals according to linear increment model split；
Obtain the demarcation interval residing for the resistance value of the current earphone.
Alternatively, the step of exporting the output includes：
Sign corresponding with the resistance value of the current earphone is shown in the terminal, according to the sign adjustment
The output simultaneously obtains a final output power；
Export the final output power.
A kind of control circuit of earphone output, including：
Circuit is obtained, for obtaining the resistance value of the earphone being inserted in the receiver J-Horner of terminal；
Acquiring unit, for from default earphone impedance value table corresponding with output, obtain with it is current
The corresponding output of resistance value of the earphone of insertion receiver J-Horner；
Output circuit, for exporting the output.
Alternatively, the acquisition circuit includes：
Switch controller, for breaking for the switch in switch arrays of the control with headset plug electric connection
Open and closure, form multiple earphone impedance test circuits；
Analog-digital converter, for gathering the resistance of earphone each group part in the plurality of earphone impedance test circuit respectively
It is worth the resistance corresponding relation with the total resistance of the earphone impedance test circuit；
The resistance corresponding relation for gathering respectively is constructed as value relatable matrix, according to institute by computing module
Value relatable matrix is stated, the resistance value of the earphone is calculated.
Alternatively, in the earphone impedance test circuit, earphone each group part includes：The L channel of the earphone is sent out
Sound coil, the R channel sounding coil of the earphone.
Alternatively, in the earphone impedance test circuit, earphone each group part also includes：Common ground circuit, company
The first line of the L channel sounding coil is connect, connecting the second circuit of the R channel sounding coil.
Alternatively, the plurality of earphone impedance test circuit includes：
The first line, the L channel sounding coil, the R channel sounding coil, second line
Road is sequentially connected in series the series circuit to be formed；
The first line, the L channel sounding coil, the common ground circuit are sequentially connected in series what is formed
Series circuit；
Second circuit, the R channel sounding coil, the common ground circuit are sequentially connected in series what is formed
Series circuit；
Formed with the common ground lines in parallel after the first line, L channel sounding coil series connection
First parallel circuit, first parallel circuit is with second circuit, the R channel sounding coil successively
Series connection；
Formed with the common ground lines in parallel after second circuit, R channel sounding coil series connection
Second parallel circuit, second parallel circuit is with the first line, the L channel sounding coil successively
Series connection.
Alternatively, the acquiring unit specifically for：
From default earphone impedance value table corresponding with output, the resistance value of the current earphone is determined
Residing demarcation interval；
According to the default demarcation interval and the corresponding relation of output, obtain and the current earphone
The corresponding output of demarcation interval residing for resistance value.
Alternatively, the acquiring unit also particularly useful for：
Second resistance value of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired, presses
Go out multiple demarcation intervals according to linear increment model split；
Obtain the demarcation interval residing for the resistance value of the current earphone.
Alternatively, the output circuit includes：
Display circuit, for showing sign corresponding with the resistance value of the current earphone, root in the terminal
The output is adjusted according to the sign and a final output power is obtained；Export the final output power.
The invention has the beneficial effects as follows：
The present invention is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal by acquisition, and pre- from one
If earphone impedance value table corresponding with output in, obtain corresponding with the resistance value of current earphone output work
Rate, and export the output, according to the tables of data in the earphone impedance value comparison database for detecting, so
After suitable level of sound volume is set, export suitable output to drive earphone, so that earpiece volume reaches
To suitable state, the automatic adaptation of the volume of the earphone of different resistance values is realized, user experience is improved.
Description of the drawings
Fig. 1 represents the first pass schematic diagram of method in the present invention；
Fig. 2 represents the second procedure schematic diagram of method in the present invention；
Fig. 3 represents the 3rd schematic flow sheet of method in the present invention；
Fig. 4 represents the 4th schematic flow sheet of method in the present invention；
Fig. 5 represents the 5th schematic flow sheet of method in the present invention；
Fig. 6 represents the first structure schematic diagram of circuit in the present invention；
Fig. 7 represents the second structural representation of circuit in the present invention；
Fig. 8 represents the overall schematic of the acquisition circuit of circuit in the present invention；
Fig. 9 is represented and the multiple earphone impedance test circuit schematic diagrams being correspondingly formed in Fig. 8 circuits；
Figure 10 represents the closure of switch arrays breaker in middle corresponding with multiple earphone impedance test circuits in Fig. 9
With disconnection situation table.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing in accompanying drawing
The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should not be by
Embodiments set forth here is limited.On the contrary, there is provided these embodiments are able to be best understood from this
It is open, and the scope of the present disclosure complete can be conveyed to those skilled in the art.
As shown in figure 1, the invention discloses a kind of control method of earphone output, comprises the steps：
Step 100：Acquisition is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal；
Step 200：From default earphone impedance value table corresponding with output, obtain and deserve vestibule
The corresponding output of resistance value of machine；
Step 300：Export the output.
Resistance value of the method by the earphone of acquisition insertion terminal, in default earphone impedance value and output work
Rate correspondence table finds out corresponding suitable output, carrys out controlled output volume, realizes different resistance value earphones
The proper fit of volume and output.
As shown in Fig. 2 wherein, acquisition is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal
Step includes：
Step 110：The disconnection of the switch in the switch arrays that control is electrically connected with headset plug and closure,
Form multiple earphone impedance test circuits；
Headset plug is connected with the switch arrays arranged in terminal after insertion terminal holes, switch arrays
It is connected to form earphone impedance test circuit with metal position of each component inside earphone at headset plug, passes through
The disconnection of controlling switch array breaker in middle and closure, define multiple differences formed by each component inside earphone
Circuit.
Step 120：The resistance and earphone for gathering earphone each group part in multiple earphone impedance test circuits respectively hinders
The resistance corresponding relation of the total resistance of anti-test circuit；
What earphone impedance value was mainly made up of the resistance of each component in earphone, in the testing impedance of each earphone
During, we can obtain the big probable value of earphone impedance by the resistance of calculating earphone primary clustering, this
Big probable value and earphone real impedance value are a proximity values, do not affect final effect.
Therefore, in the case where the earphone impedance value of insertion terminal is unknown, need the component in acquisition earphone
Resistance forms different earphones in disconnection and the closure of switch arrays of every control and hinders learning the resistance value
After anti-test matrix, the single resistance of each component of earphone that each earphone impedance test circuit includes is gathered
With the resistance corresponding relation of the total resistance of integrated circuit, need often to control once just collection once, control and gather
Number of times need the number of the earphone intraware for calculating resistance as needed to determine.
Step 130：The resistance corresponding relation for gathering respectively is constructed as into value relatable matrix, is closed according to resistance
It is matrix, is calculated the resistance value of earphone.
The resistance corresponding relation synchronous recording for collecting every time is got off, after collection is finished, is just obtained
The one value relatable matrix being made up of resistance corresponding relation, calculates the matrix, obtains the resistance of headset assembly,
The resistance value of the earphone is obtained further, in relational matrix, the number of resistance corresponding relation is with final relational matrix
The resistance that each component can be calculated is standard.
In whole process, this method detects different earphone impedances and according to detecting using switch arrays
Data Comparison data base draw suitable output, then suitable level of sound volume be set, output is suitable
The signal of telecommunication driving earphone so that earpiece volume reaches suitable state.
As shown in figure 3, wherein, from default earphone impedance value table corresponding with output, obtain with
The step of being currently inserted into the corresponding output of resistance value of the earphone of receiver J-Horner includes：
Step 210：From default earphone impedance value table corresponding with output, current earphone is determined
Demarcation interval residing for resistance value；
In default earphone impedance value table corresponding with output, drawing residing for current earphone resistance value is found out
By stages, the demarcation interval can be the advance ready-portioned big impedance earphone areas for representing certain resistance value scope
Between, middle impedance earphone is interval, little impedance earphone is interval, or size of the others to earphone impedance value
Carry out dividing the form of conclusion.
Step 220：According to default demarcation interval and the corresponding relation of output, obtain and current earphone
Resistance value residing for the corresponding output of demarcation interval.
It is corresponding with each demarcation interval to have an output, find out residing for the resistance value of current earphone
After demarcation interval, corresponding relation that just can be according to demarcation interval with output obtains the output.
As shown in figure 4, wherein, from default earphone impedance value table corresponding with output, it is determined that working as
The step of demarcation interval residing for the resistance value of front earphone, also includes：
Step 211：The second of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired
Resistance value, goes out multiple demarcation intervals according to linear increment model split；
Step 212：Obtain the demarcation interval residing for the resistance value of current earphone.
In the memory space of terminal, the resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired
Resistance value, it is interval according to linear increment mode points some sections from minimum impedance value to maximum impedance value, it is this kind of
The demarcation interval that method is obtained has quantitative criteria, with more the reliability realized, can be by each dividing regions
Between be labeled as corresponding headset type, shown in terminal, for user carry out manual switching with select.
As shown in figure 5, wherein, include the step of output output：
Step 310：Sign corresponding with the resistance value of current earphone is shown in terminal, is adjusted according to the sign
Output simultaneously obtains a final output power；
Step 320：Output final output power.
The program is carried out to relevant information when current earphone resistance value corresponding output is got
Show, it is possible to achieve show the correspondence of current earphone resistance value after earphone inserts terminal on terminal interface
Sign, the sign can remind sign for one, or indicate for a display to current earphone state,
The sign is used for the output sound of the current playable sound and present terminal for making user understand earphone used by oneself
Amount size is mismatched and what state is the exportable volume of current earphone be in, and basis should in time to allow user
Sign is adjusted, and then makes terminal obtain a final output power, and exports the output, reaches tune
The effect of section earpiece volume.
As shown in fig. 6, the invention also discloses a kind of control circuit of earphone output, including：
Circuit is obtained, for obtaining the resistance value of the earphone being inserted in the receiver J-Horner of terminal；
Acquiring unit, for from default earphone impedance value table corresponding with output, obtain with it is current
The corresponding output of resistance value of the earphone of insertion receiver J-Horner；
Output circuit, for exporting the output.
The control circuit of the earphone output shown in the present invention includes obtaining circuit, acquiring unit, output electricity
This several part of road, obtain circuit and obtain earphone impedance value, and acquiring unit obtains corresponding with the earphone impedance value
Output, output circuit export the output, and the output is the output of final earphone power amplifier,
So as to realize the size of the earphone impedance value automatic regulating volume according to insertion terminal.
As shown in fig. 7, wherein, obtaining circuit includes：
Switch controller, for control with headset plug be electrically connected with switch arrays in switch disconnection with
Closure, forms multiple earphone impedance test circuits；
Analog-digital converter, for gathering the resistance of earphone each group part in the plurality of earphone impedance test circuit respectively
With the resistance corresponding relation of the total resistance of earphone impedance test circuit；
The resistance corresponding relation for gathering respectively is constructed as value relatable matrix, according to the resistance by computing module
Value relational matrix, is calculated the resistance value of the earphone.
What earphone impedance value was mainly made up of the resistance of each component in earphone, in the testing impedance of each earphone
During, we can obtain the big probable value of earphone impedance by the resistance of calculating earphone primary clustering, this
Big probable value and earphone real impedance value are a proximity values, do not affect final effect.
The disconnection of the switch in the switch controller controlling switch array and closure, headset plug is in insertion terminal
After jack, it is connected with the switch arrays arranged in terminal, inside switch arrays and earphone, each component is in earphone
Metal position at plug connects to form earphone impedance test circuit, by the disconnected of controlling switch array breaker in middle
Open and closure, define multiple different circuits formed by each component inside earphone, wherein switch arrays set
The purpose put is that matching obtains different earphones under the closure of different switches with the various combined situations of disconnection
Testing impedance circuit, during analog-digital converter gathers the test circuit, the resistance comprising each component of earphone is hindered with earphone
The analogue signal is converted to digital signal by the analogue signal of the resistance corresponding relation of the total resistance of anti-test circuit
Synchronous transfer enables computing module finally to constitute the pass that can calculate the concrete resistance of each component to computing module
It is matrix, so as to draw the last resistance value being made up of the resistance of each component.
Wherein, in earphone impedance test circuit, earphone each group part includes：The L channel sounding coil of earphone, ear
The R channel sounding coil of machine.
In earphone internal structure, the left and right acoustic channels sounding coil of earphone is the main resistance value constituting portion of earphone
Point, in circuit in the calculating process of each component resistance, we can ignore less resistance in earphone circuit
Value, the component of earphone in circuit is regarded as the sounding coil for only including left and right acoustic channels, by the left side for calculating earphone
The resistance of sound channel sounding coil, the resistance of the R channel sounding coil of earphone are drawing the general of earphone impedance value
Value, correspondingly, the number of switches in switch arrays can also reduce many, can simplify test circuit structure,
Simple and Convenient Calculation process, and the big probable value and the real impedance value of earphone are a proximity values, do not affect final effect.
Correspondingly, the switch controller now should specifically, the disconnection of the switch in controlling switch array
With closure, multiple earphone impedance test circuits are formed, multiple earphone impedance test circuits at this moment should be at least
The headset left channel sounding coil resistance and the earphone R channel sounding coil resistance can be calculated；Correspondingly,
The acquisition circuit specifically, should obtain the resistance of earphone each group part in the plurality of earphone impedance test circuit respectively
The resistance corresponding relation of value and the total resistance of earphone impedance test circuit, by the resistance corresponding relation group for obtaining respectively
Value relatable matrix is built, value relatable matrix now can at least calculate the headset left channel sounding coil
Resistance and the earphone R channel sounding coil resistance, it is right by the headset left channel sounding coil resistance and the earphone
Resistance value that is sound channel sounding coil resistance and drawing earphone.
Further, as shown in Fig. 8, Fig. 9, Figure 10, in earphone impedance test circuit, earphone each group part is also
Including：Common ground circuit, the first line of connection L channel sounding coil, connection R channel sounding coil
The second circuit.In order to further obtain accurate earphone impedance value, Consumer's Experience effect, Wo Menye are improved
The computing the resistor value in earphone circuit can be come in circuit in the calculating process of each component resistance.
Accordingly, in this embodiment, obtain circuit in by switch controller controlling switch matrix closure with
Disconnecting the plurality of earphone impedance test circuit for being formed includes：
First line, L channel sounding coil, R channel sounding coil, the second circuit are sequentially connected in series what is formed
Series circuit；
First line, L channel sounding coil, common ground circuit are sequentially connected in series the series circuit to be formed；
Second circuit, R channel sounding coil, common ground circuit are sequentially connected in series the series circuit to be formed；
The first parallel circuit is formed with common ground lines in parallel after first line, the series connection of L channel sounding coil,
The circuit that first parallel circuit and the second circuit, R channel sounding coil are sequentially connected in series；
The second parallel circuit is formed with common ground lines in parallel after second circuit, the series connection of R channel sounding coil,
The circuit that second parallel circuit is sequentially connected in series with first line, L channel sounding coil.
Accordingly, by more than, the total resistance of circuit of five earphone impedance test circuits is designated as R respectively1、R2、R3、
R4、R5, the resistance of first line is designated as RL1, L channel sounding coil resistance be designated as RL2, the second circuit
Resistance be designated as RR1, R channel sounding coil resistance be designated as RR2, common ground circuit resistance be designated as
RGND, then can obtain corresponding value relatable matrix by above earphone impedance test circuit is：
R1=RL1+RL2+RR1+RR2
R2=RL1+RL2+RGND
R3=RR1+RR2+RGND
R4=(RL1+RL2)//RGND+RR1+RR2
R5=(RR1+RR2)//RGND+RL1+RL2；
Wherein it is possible to calculate RL2And RR2Value, by the resistance of the L channel sounding coil, R channel
The resistance of sounding coil draws final earphone impedance value.
In this embodiment, switch controller starts controlling switch array according to the earphone for having detected that insertion,
The control of switch arrays is as shown in figure 8, the array includes 6 switches and an analog-digital converter, the switch
For single-pole double-throw switch (SPDT), this 6 switches are various shown in Fig. 9, Figure 10 to complete according to different states
Matching.Switch arrays are often once matched meeting synchronous feedback to computing module, and the module can be preserved each time
Data be used for later matrix calculus；After switch arrays complete 5 matchings, computing module will be kept
Data constitute a relational matrix, solve the matrix, it can be deduced that RL2And RR2Exact value.
Further, acquiring unit specifically for：From default earphone impedance value table corresponding with output
In, determine the demarcation interval residing for the resistance value of current earphone；According to default demarcation interval and output
Corresponding relation, obtain corresponding with the demarcation interval residing for the resistance value of current earphone output.
The acquiring unit first obtains the earphone impedance value when the corresponding output of resistance value of earphone is obtained
The corresponding demarcation interval in the earphone impedance value table corresponding with output being stored in terminal storage space,
Output corresponding with the demarcation interval is obtained by the demarcation interval, after output is obtained,
Exported by output circuit.
Correspondingly, resistance value and maximum impedance earphone of the demarcation interval for the minimum impedance earphone of pre-acquired
Resistance value is interval according to some sections of linear increment mode point, and each interval mark is corresponding output, thus,
Acquiring unit also particularly useful for：
Second resistance value of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired, presses
Go out multiple demarcation intervals according to linear increment model split；
Obtain the demarcation interval residing for the resistance value of current earphone.
Wherein, output circuit includes：
Display circuit, for showing sign corresponding with the resistance value of current earphone in terminal, adjusts according to sign
Whole output simultaneously obtains a final output power；Output final output power.The setting of display circuit, can
So that user carries out actual adjustment with reference to the needs of oneself, Consumer's Experience is made to have more hommization.
After the earphone insertion terminal that different impedances can effectively be solved the problems, such as of the invention, volume is different,
On the one hand earphone is protected on the other hand to protect human ear, the method effect is obvious, especially for driving force
Bigger earphone power amplifier, practicality are very high.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art
For member, some improvements and modifications can also be made under the premise of without departing from principle of the present invention, these
Improvements and modifications are also within the scope of the present invention.
Claims (13)
1. a kind of control method of earphone output, it is characterised in that include：
Acquisition is inserted into the resistance value of the current earphone in the receiver J-Horner of terminal；
From default earphone impedance value table corresponding with output, the impedance with the current earphone is obtained
It is worth corresponding output；
Export the output.
2. the control method of earphone output according to claim 1, it is characterised in that obtain
The step of resistance value of the current earphone being inserted in the receiver J-Horner of terminal, includes：
Control the disconnection of the switch in the switch arrays being electrically connected with the headset plug and close, formed many
Individual earphone impedance test circuit；
The resistance and the earphone for gathering earphone each group part in the plurality of earphone impedance test circuit respectively hinders
The resistance corresponding relation of the total resistance of anti-test circuit；
The resistance corresponding relation for gathering respectively is constructed as into value relatable matrix, according to the value relatable
Matrix, is calculated the resistance value of the earphone.
3. the control method of earphone output according to claim 1, it is characterised in that from
In default earphone impedance value table corresponding with output, the resistance of the earphone of receiver J-Horner is obtained and is currently inserted into
The step of anti-value corresponding output, includes：
From default earphone impedance value table corresponding with output, the resistance value of the current earphone is determined
Residing demarcation interval；
According to the default demarcation interval and the corresponding relation of output, obtain and the current earphone
The corresponding output of demarcation interval residing for resistance value.
4. the control method of earphone output according to claim 3, it is characterised in that from
In default earphone impedance value table corresponding with output, drawing residing for the resistance value of the current earphone is determined
The step of by stages, also includes：
Second resistance value of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired, presses
Go out multiple demarcation intervals according to linear increment model split；
Obtain the demarcation interval residing for the resistance value of the current earphone.
5. the control method of earphone output according to claim 1, it is characterised in that output
The step of output, includes：
Sign corresponding with the resistance value of the current earphone is shown in the terminal, according to the sign adjustment
The output simultaneously obtains a final output power；
Export the final output power.
6. a kind of control circuit of earphone output, it is characterised in that include：
Circuit is obtained, for obtaining the resistance value of the earphone being inserted in the receiver J-Horner of terminal；
Acquiring unit, for from default earphone impedance value table corresponding with output, obtain with it is current
The corresponding output of resistance value of the earphone of insertion receiver J-Horner；
Output circuit, for exporting the output.
7. the control circuit of earphone output according to claim 6, it is characterised in that described
Obtaining circuit includes：
Switch controller, for breaking for the switch in switch arrays of the control with headset plug electric connection
Open and closure, form multiple earphone impedance test circuits；
Analog-digital converter, for gathering the resistance of earphone each group part in the plurality of earphone impedance test circuit respectively
It is worth the resistance corresponding relation with the total resistance of the earphone impedance test circuit；
The resistance corresponding relation for gathering respectively is constructed as value relatable matrix, according to institute by computing module
Value relatable matrix is stated, the resistance value of the earphone is calculated.
8. the control circuit of earphone output according to claim 7, it is characterised in that
In the earphone impedance test circuit, earphone each group part includes：The L channel sounding coil of the earphone,
The R channel sounding coil of the earphone.
9. the control circuit of earphone output according to claim 8, it is characterised in that
In the earphone impedance test circuit, earphone each group part also includes：Common ground circuit, the connection left side
The first line of sound channel sounding coil, the second circuit for connecting the R channel sounding coil.
10. the control circuit of earphone output according to claim 9, it is characterised in that
The plurality of earphone impedance test circuit includes：
The first line, the L channel sounding coil, the R channel sounding coil, second line
Road is sequentially connected in series the series circuit to be formed；
The first line, the L channel sounding coil, the common ground circuit are sequentially connected in series what is formed
Series circuit；
Second circuit, the R channel sounding coil, the common ground circuit are sequentially connected in series what is formed
Series circuit；
Formed with the common ground lines in parallel after the first line, L channel sounding coil series connection
First parallel circuit, first parallel circuit is with second circuit, the R channel sounding coil successively
Series connection；
Formed with the common ground lines in parallel after second circuit, R channel sounding coil series connection
Second parallel circuit, second parallel circuit is with the first line, the L channel sounding coil successively
Series connection.
The control circuit of 11. earphone outputs according to claim 6, it is characterised in that described
Acquiring unit specifically for：
From default earphone impedance value table corresponding with output, the resistance value of the current earphone is determined
Residing demarcation interval；
According to the default demarcation interval and the corresponding relation of output, obtain and the current earphone
The corresponding output of demarcation interval residing for resistance value.
The control circuit of 12. earphone outputs according to claim 11, it is characterised in that institute
State acquiring unit also particularly useful for：
Second resistance value of first resistance value and a maximum impedance earphone of one minimum impedance earphone of pre-acquired, presses
Go out multiple demarcation intervals according to linear increment model split；
Obtain the demarcation interval residing for the resistance value of the current earphone.
The control circuit of 13. earphone outputs according to claim 6, it is characterised in that described
Output circuit includes：
Display circuit, for showing sign corresponding with the resistance value of the current earphone, root in the terminal
The output is adjusted according to the sign and a final output power is obtained；
Export the final output power.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603736.2A CN106550301A (en) | 2015-09-21 | 2015-09-21 | A kind of control method and circuit of earphone output |
| PCT/CN2015/093617 WO2016145874A1 (en) | 2015-09-21 | 2015-11-02 | Output power control method and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603736.2A CN106550301A (en) | 2015-09-21 | 2015-09-21 | A kind of control method and circuit of earphone output |
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| Publication Number | Publication Date |
|---|---|
| CN106550301A true CN106550301A (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510603736.2A Withdrawn CN106550301A (en) | 2015-09-21 | 2015-09-21 | A kind of control method and circuit of earphone output |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106550301A (en) |
| WO (1) | WO2016145874A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112839280A (en) * | 2021-01-04 | 2021-05-25 | 广州飞傲电子科技有限公司 | Automatic earphone volume adjusting method, device, equipment and storage medium |
| CN117061949A (en) * | 2023-10-08 | 2023-11-14 | 荣耀终端有限公司 | Earphone volume adjusting method and electronic equipment |
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| CN117061949B (en) * | 2023-10-08 | 2024-04-12 | 荣耀终端有限公司 | Earphone volume adjusting method and electronic equipment |
Also Published As
| Publication number | Publication date |
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| WO2016145874A1 (en) | 2016-09-22 |
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Application publication date: 20170329 |