CN109743653A - Head circuit structure and communication apparatus - Google Patents
Head circuit structure and communication apparatus Download PDFInfo
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- CN109743653A CN109743653A CN201910054208.4A CN201910054208A CN109743653A CN 109743653 A CN109743653 A CN 109743653A CN 201910054208 A CN201910054208 A CN 201910054208A CN 109743653 A CN109743653 A CN 109743653A
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Abstract
The invention discloses head circuit structure and communication apparatus.The head circuit structure includes the internal phone circuit structure positioned at terminal inner, and internal phone circuit structure includes earphone base, coder, the first filter module and the second filter module；The first end of first filter module is connect with earphone base, and the second end of the first filter module is connect with the first end of the second filter module；The second end of second filter module is connect with coder.Head circuit structure disclosed by the embodiments of the present invention can cover the route of transmission of interference signal in the internal phone circuit of terminal inner comprehensively, while the first filter module and the second filter module be combined with each other, and improve filtration efficiency.
Description
Technical field
The present embodiments relate to electronic technology field more particularly to head circuit structure and communication apparatus.
Background technique
Main accessories of the earphone as communication apparatus, the quality of audio performance directly influence user experience.If with
When family is in communication signal weaker environment, interference signal will be readily heard in earphone.
Currently, the method for eliminating interference signal in earphone is to add filtering device or addition shielding material in communication apparatus
Material.
However, different distribution modes can generate different interference signals, existing there are many distribution modes of earphone base
Which position addition filtering device or shielding material and addition filter in communication apparatus are not all shown in technology explicitly
Quantity of wave device or shielding material etc. eliminates the interference signal in earphone, and the ability for eliminating interference signal is poor, use
Family experience is poor.
Summary of the invention
The present invention provides head circuit structure and communication apparatus, to realize the purpose for simplifying the structure inside communication apparatus,
Interference signal in elimination earphone that simultaneously can be comprehensive, promotes terminal and communication apparatus service performance.
In a first aspect, the head circuit structure includes being located at eventually the embodiment of the invention provides a kind of head circuit structure
Internal phone circuit structure inside end, the internal phone circuit structure includes earphone base, coder, the first filter module
With the second filter module；
The first end of first filter module is connect with the earphone base, the second end of first filter module and institute
State the first end connection of the second filter module；
The second end of second filter module is connect with the coder.
Further, the internal phone circuit structure further includes internal microphone line, internal L channel line, home loop
Signal wire and internal right channel line；First filter module includes the first filter circuit, the second filter circuit, third filtered electrical
Road and the 4th filter circuit；
First filter circuit is located on the internal microphone line, and the first end of first filter circuit and institute
Earphone base connection is stated, the second end of first filter circuit is connect with second filter module, for filtering out the inside
Interference signal in microphone lines；
Second filter circuit is located on the internal L channel line, and the first end of second filter circuit and institute
Earphone base connection is stated, the second end of second filter circuit is connect with second filter module, for filtering out the inside
Interference signal in L channel line；
The third filter circuit is located on the inner loop signal line, and the first end of the third filter circuit with
The earphone base connection, the second end of the third filter circuit is connect with second filter module, for filtering out in described
Interference signal in portion's loop signal line；
4th filter circuit is located on the internal right channel line, and the first end of the 4th filter circuit and institute
Earphone base connection is stated, the second end of the 4th filter circuit is connect with second filter module, for filtering out the inside
Interference signal in right channel line.
Further, first filter circuit includes the first inductance and first capacitor；The first end of first inductance
It is connect with the earphone base, the second end of first inductance is filtered with the first end of the first capacitor and described second respectively
Module connection；Second termination of the first capacitor is mainly；
Second filter circuit includes the second inductance and the second capacitor；The first end of second inductance and the earphone
Seat connection, the second end of second inductance are connect with the first end of second capacitor and second filter module respectively；
Second termination of second capacitor is mainly；
The third filter circuit includes third inductance and third capacitor；The first end of the third inductance and the earphone
Seat connection, the second end of the third inductance are connect with the first end of the third capacitor and second filter module respectively；
Second termination of the third capacitor is mainly；
4th filter circuit includes the 4th inductance and the 4th capacitor；The first end of 4th inductance and the earphone
Seat connection, the second end of the 4th inductance are connect with the first end of the 4th capacitor and second filter module respectively；
Second termination of the 4th capacitor is mainly.
Further, second filter module include the 5th filter circuit, the 6th filter circuit, the 7th filter circuit and
8th filter circuit；
5th filter circuit is located on the internal microphone line, and the first end of the 5th filter circuit and institute
Coder connection is stated, the second end of the 5th filter circuit is connect with first filter module, for filtering out in described
Interference signal in portion's microphone lines；
6th filter circuit is located on the internal L channel line, and the first end of the 6th filter circuit and institute
Coder connection is stated, the second end of the 6th filter circuit is connect with first filter module, for filtering out in described
Interference signal in portion's L channel line；
7th filter circuit is located on the inner loop signal line, and the first end of the 7th filter circuit with
The coder connection, the second end of the 7th filter circuit is connect with first filter module, described for filtering out
Interference signal in inner loop signal line；
8th filter circuit is located on the internal right channel line, and the first end of the 8th filter circuit and institute
Coder connection is stated, the second end of the 8th filter circuit is connect with first filter module, for filtering out in described
Interference signal in portion's right channel line.
Further, the 5th filter circuit includes the 5th inductance and the 5th capacitor；The first end of 5th inductance
It is connect with the coder, the second end of the 5th inductance is filtered with the first end of the 5th capacitor and described first respectively
The connection of wave module；Second termination of the 5th capacitor is mainly；
6th filter circuit includes the 6th inductance and the 6th capacitor；The first end and the compiling of 6th inductance
Code device connection, the second end of the 6th inductance connect with the first end of the 6th capacitor and first filter module respectively
It connects；Second termination of the 6th capacitor is mainly；
7th filter circuit includes the 7th inductance and the 7th capacitor；The first end and the compiling of 7th inductance
Code device connection, the second end of the 7th inductance connect with the first end of the 7th capacitor and first filter module respectively
It connects；Second termination of the 7th capacitor is mainly；
8th filter circuit includes the 8th inductance and the 8th capacitor；The first end and the compiling of 8th inductance
Code device connection, the second end of the 8th inductance connect with the first end of the 8th capacitor and first filter module respectively
It connects；Second termination of the 8th capacitor is mainly.
Further, the head circuit structure further includes the external headphones circuit structure positioned at exterior of terminal, described outer
Portion's head circuit structure includes external microphone line, external L channel line, external circuit signal wire, external right channel line and the
Three filter modules；
The first end of the third filter module is connect with the external circuit signal wire, and the of the third filter module
Two ends are connect with the external microphone line.
Further, the third filter module includes the 9th inductance and the 9th capacitor；
The first end of 9th inductance is connect with the external circuit signal wire, the second end difference of the 9th inductance
It is connect with the first end of the 9th capacitor and the external microphone line, the second end ground connection of the 9th capacitor；
Alternatively, the third filter module includes magnetic bead and the tenth capacitor；
The first end of the magnetic bead is connect with the external circuit signal wire, and the second end of the magnetic bead is respectively with described
The first end of ten capacitors is connected with the external microphone line, the second end ground connection of the tenth capacitor.
Further, resistance value of the magnetic bead in 1GHz is B, and B >=1k Ω, the capacitance of the tenth capacitor is C, 22pF
≤C≤100pF。
Further, radio-frequency devices, first filter module and the radio-frequency devices are provided on the earphone base
Distance is L, L >=3mm.
Second aspect, the embodiment of the invention also provides a kind of communication apparatus, which includes the ear of first aspect
Electromechanical line structure.
Head circuit structure provided in an embodiment of the present invention includes the internal phone circuit structure positioned at terminal inner, internal
Head circuit structure includes earphone base, coder, the first filter module and the second filter module；The first of first filter module
End is connect with earphone base, and the second end of the first filter module is connect with the first end of the second filter module；Second filter module
Second end is connect with coder, by the way that the first filter module and the second filtering mould are arranged between earphone base and coder
Block, since the first filter module is set at earphone base, the second filter module is set at coder, can cover end comprehensively
The route of transmission of interference signal in internal phone circuit inside end, while the first filter module and the second filter module are mutually tied
It closes, there is stronger filter effect, effectively filter out interference signal except coder, solve in the prior art because of ear
The difference of base distribution mode, the different interference signals generated in head circuit, sets without explicitly showing in communication
The quantity of which of standby addition filtering device or shielding material and addition filtering device or shielding material disappears
Except interference signal, and the problem that the ability of eliminating interference signal is poor, the structure simplified inside communication apparatus is realized, while can be with
The comprehensive effect for eliminating the interference signal in head circuit, promotes terminal and communication apparatus service performance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for head circuit structure that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of head circuit structure provided by Embodiment 2 of the present invention；
Fig. 3 is the structural schematic diagram of another head circuit structure provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of structural schematic diagram for head circuit structure that the embodiment of the present invention three provides；
Fig. 5 is a kind of structural schematic diagram for external headphones circuit structure that the embodiment of the present invention three provides；
Fig. 6 is a kind of structural schematic diagram for communication apparatus that the embodiment of the present invention four provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of structural schematic diagram for head circuit structure that the embodiment of the present invention one provides, the head circuit structure
Terminal inner can be located at.Specifically, as shown in Figure 1, the internal phone circuit structure 100 includes earphone base 10, coder
20, the first filter module 30 and the second filter module 40；The first end of first filter module 30 is connect with earphone base 10, the first filter
The second end of wave module 30 is connect with the first end of the second filter module 40；The second end and coder of second filter module 40
20 connections.
Wherein, when terminal externally emits signal, can internal phone circuit to terminal generate interference signal, interference signal
It may be conducted and be entered in internal phone circuit by the route between earphone base 10 and coder 20, if internal phone is electric
The audio signal quality of internal phone circuit carrying will be will affect by not having filter module to filter out interference signal in road, so
In order to obtain the audio signal of high quality, the interference entered need to be conducted to the route between earphone base 10 and coder 20 and is believed
It number is filtered out.So in route between the earphone base 10 and coder 20 in the internal phone circuit structure 100
First filter module 30 and the second filter module 40 are set, the first end of the first filter module 30 is connect with earphone base 10, and first
The second end of filter module 30 is connect with the first end of the second filter module 40；The second end and coding and decoding of second filter module 40
Device 20 connects, and realizes filtering out for the interference signal entered to the route conduction between earphone base 10 and coder 20, thus
It ensure that audio quality.
Head circuit structure provided in an embodiment of the present invention includes the internal phone circuit structure positioned at terminal inner, internal
Head circuit structure includes earphone base, coder, the first filter module and the second filter module；The first of first filter module
End is connect with earphone base, and the second end of the first filter module is connect with the first end of the second filter module；Second filter module
Second end is connect with coder, by the way that the first filter module and the second filtering mould are arranged between earphone base and coder
Block, since the first filter module is set at earphone base, the second filter module is set at coder, can cover end comprehensively
The route of transmission of interference signal in internal phone circuit inside end, while the first filter module and the second filter module are mutually tied
It closes, there is stronger filter effect, effectively filter out interference signal except coder, solve in the prior art because of ear
The difference of base distribution mode, the different interference signals generated in head circuit, sets without explicitly showing in communication
The quantity of which of standby addition filtering device or shielding material and addition filtering device or shielding material disappears
Except interference signal, and the problem that the ability of eliminating interference signal is poor, the structure simplified inside communication apparatus is realized, while can be with
The comprehensive effect for eliminating the interference signal in head circuit, promotes terminal service performance.
Embodiment two
Fig. 2 is a kind of structural schematic diagram of head circuit structure provided by Embodiment 2 of the present invention, the head circuit structure
Positioned at terminal inner.Specifically, as shown in Fig. 2, internal phone circuit structure 100 includes internal microphone line 50, internal left sound
Diatom 60, inner loop signal line 70 and internal right channel line 80；First filter module 30 includes the first filter circuit 31, second
Filter circuit 32, third filter circuit 33 and the 4th filter circuit 34；In the internally positioned microphone lines 50 of first filter circuit 31,
And first the first end of filter circuit 31 connect with earphone base 10, the second end of the first filter circuit 31 and the second filter module 40
Connection, for filtering out the interference signal in internal microphone line 50；On the internally positioned L channel line 60 of second filter circuit 32, and
The first end of second filter circuit 32 is connect with earphone base 10, and the second end of the second filter circuit 32 and the second filter module 40 connect
It connects, for filtering out the interference signal in internal L channel line 60；On the internally positioned loop signal line 70 of third filter circuit 33, and
The first end of third filter circuit 33 is connect with earphone base 10, and the second end of third filter circuit 33 and the second filter module 40 connect
It connects, for filtering out the interference signal in inner loop signal line 70；On the internally positioned right channel line 80 of 4th filter circuit 34, and
The first end of 4th filter circuit 34 is connect with earphone base 10, and the second end of the 4th filter circuit 34 and the second filter module 40 connect
It connects, for filtering out the interference signal in internal right channel line 80.
Wherein, internal phone circuit structure 100 includes internal microphone line 50, internal L channel line 60, home loop letter
Number line 70 and internal right channel line 80, internal microphone line 50, internal L channel line 60, home loop letter at earphone base 10
Number line 70 and internal right channel line 80 are respectively provided with filter circuit, can filter out internal microphone line 50 at earphone base, internal respectively
The interference signal generated in L channel line 60, inner loop signal line 70 and internal right channel line 80.
Based on the above technical solution, Fig. 3 is another head circuit structure provided by Embodiment 2 of the present invention
Structural schematic diagram, specifically, the first filter circuit 31 includes the first inductance L1 and first capacitor C1；The first end of first inductance L1
It is connect with earphone base 10, the second end of the first inductance L1 connects with the first end of first capacitor C1 and the second filter module 40 respectively
It connects；The second termination of first capacitor C1 is mainly；Second filter circuit 32 includes the second inductance L2 and the second capacitor C2；Second inductance
The first end of L2 is connect with earphone base 10, and the second end of the second inductance L2 is filtered with the first end of the second capacitor C2 and second respectively
Module 40 connects；The second termination of second capacitor C2 is mainly；Third filter circuit 33 includes third inductance L3 and third capacitor C3；
The first end of third inductance L3 is connect with earphone base 10, the second end of third inductance L3 respectively with the first end of third capacitor C3 and
The connection of second filter module 40；The second termination of third capacitor C3 is mainly；4th filter circuit 34 includes the 4th inductance L4 and the
Four capacitor C4；The first end of 4th inductance L4 is connect with earphone base 10, the second end of the 4th inductance L4 respectively with the 4th capacitor C4
First end and the second filter module 40 connection；The second termination of 4th capacitor C4 is mainly.
It should be noted that the first filter circuit 31, the second filter circuit 32, third filter circuit 33 and the 4th filtered electrical
Road 34 can include the filter circuit that inductance and capacitor form, and can also include the filter circuit that inductance and magnetic bead form,
It can also include the filter circuit that resistance and capacitor form, it is preferred that the first filter circuit 31, the second filter circuit 32, the
Three filter circuits 33 and the 4th filter circuit 34 include the filter circuit that inductance and capacitor form, or include inductance and magnetic
The filter circuit of pearl composition.Fig. 3 is only with the first filter circuit 31, the second filter circuit 32, third filter circuit 33 and the 4th filter
The filter circuit that wave circuit 34 is formed including inductance and capacitor illustrates.
It should also be noted that, the second of the second end of first capacitor C1, the second end of the second capacitor C2, third capacitor C3
The second end of end and the 4th capacitor C4 connect mainly, and filter effect can be improved.
Based on the above technical solution, with continued reference to Fig. 2, the second filter module 40 include the 5th filter circuit 41,
6th filter circuit 42, the 7th filter circuit 43 and the 8th filter circuit 44；The internally positioned microphone lines of 5th filter circuit 41
On 50, and the first end of the 5th filter circuit 41 is connect with coder 20, the second end of the 5th filter circuit 41 and the first filter
Wave module 30 connects, for filtering out the interference signal in internal microphone line 50；The internally positioned L channel of 6th filter circuit 42
On line 60, and the first end of the 6th filter circuit 60 is connect with coder 20, the second end and first of the 6th filter circuit 42
Filter module 30 connects, for filtering out the interference signal in internal L channel line 60；The internally positioned circuit of 7th filter circuit 43
On signal wire 70, and the first end of the 7th filter circuit 43 is connect with coder 20, the second end of the 7th filter circuit 43 with
First filter module 30 connection, for filtering out the interference signal in inner loop signal line 70；8th filter circuit 44 is located at interior
On portion's right channel line 80, and the first end of the 8th filter circuit 44 is connect with coder 20, and the second of the 8th filter circuit 44
End is connect with the first filter module 30, for filtering out the interference signal in internal right channel line 80.
Wherein, pass through internal microphone line 50, the internal L channel line 60, inner loop signal line at coder 20
70 are respectively provided with filter circuit with internal right channel line 80, can effectively filter out interference signal except coder 20.
Based on the above technical solution, with continued reference to Fig. 3, the 5th filter circuit 41 includes the 5th inductance L5 and the 5th
Capacitor C5；The first end of 5th inductance L5 is connect with coder 20, the second end of the 5th inductance L5 respectively with the 5th capacitor C5
First end and the first filter module 30 connection；The second termination of 5th capacitor C5 is mainly；6th filter circuit 42 includes the 6th
Inductance L6 and the 6th capacitor C6；The first end of 6th inductance L6 is connect with coder 20, the second end difference of the 6th inductance L6
It is connect with the first end of the 6th capacitor C6 and the first filter module 30；The second termination of 6th capacitor C6 is mainly；7th filtered electrical
Road 43 includes the 7th inductance L7 and the 7th capacitor C7；The first end of 7th inductance L7 is connect with coder 20, the 7th inductance L7
Second end connect respectively with the first end of the 7th capacitor C7 and the first filter module 30；The second termination master of 7th capacitor C7
Ground；8th filter circuit 44 includes the 8th inductance L8 and the 8th capacitor C8；The first end and coder 20 of 8th inductance L8 connects
It connects, the second end of the 8th inductance L8 is connect with the first end of the 8th capacitor C8 and the first filter module 30 respectively；8th capacitor C8
Second termination mainly.
Wherein, it should be noted that the 5th filter circuit 41, the 6th filter circuit 42, the 7th filter circuit 43 and the 8th
Filter circuit 44 can include the filter circuit that inductance and capacitor form, and can also include the filtering that inductance and magnetic bead form
Circuit can also include the filter circuit that resistance and capacitor form, it is preferred that the 5th filter circuit 41, the 6th filter circuit
42, the 7th filter circuit 43 and the 8th filter circuit 44 include the filter circuit that inductance and capacitor form, or include electricity
The filter circuit of sense and magnetic bead composition.Fig. 3 is only with the 5th filter circuit 41, the 6th filter circuit 42,43 and of the 7th filter circuit
The filter circuit that 8th filter circuit 44 is formed including inductance and capacitor illustrates.
It should also be noted that, the second of the second end of the 5th capacitor C5, the second end of the 6th capacitor C6, the 7th capacitor C7
The second end of end and the 8th capacitor C8 connect mainly, and filter effect can be improved.
The technical solution of the present embodiment, by the way that the first filter module and second are arranged between earphone base and coder
Filter module, wherein the first filter module includes the first filter circuit, the second filter circuit, third filter circuit and the 4th
Filter circuit, the second filter module include the 5th filter circuit, the 6th filter circuit, the 7th filter circuit and the 8th filtered electrical
Road, further, the first end of the 5th filter circuit 41 are connect with coder 20, the second end of the 5th filter circuit 41 and the
One filter circuit 31 connection, for filtering out the interference signal in internal microphone line 50；The first end of 6th filter circuit 60 with
Coder 20 connects, and the second end of the 6th filter circuit 42 is connect with the second filter circuit 32, for filtering out internal L channel
Interference signal in line 60；The first end of 7th filter circuit 43 is connect with coder 20, and the second of the 7th filter circuit 43
End is connect with third filter circuit 33, for filtering out the interference signal in inner loop signal line 70；8th filter circuit 44
First end is connect with coder 20, and the second end of the 8th filter circuit 44 is connect with the 4th filter circuit 34, in filtering out
Interference signal in portion's right channel line 80.On first filter circuit and the 5th internally positioned microphone lines of filter circuit, the second filter
On wave circuit and the internally positioned L channel line of the 6th filter circuit, third filter circuit and the 7th internally positioned circuit of filter circuit
On signal wire, on the 4th filter circuit and the internally positioned right channel line of the 8th filter circuit, and the first filter circuit, the second filtering
Circuit, third filter circuit, the 4th filter circuit, the 5th filter circuit, the 6th filter circuit, the 7th filter circuit and the 8th
Filter circuit includes inductance and capacitor, therefore, the first filter circuit and the 5th filter circuit, the second filter circuit and the 6th filter
Wave circuit, third filter circuit and the 7th filter circuit and the 4th filter circuit and the 8th filter circuit respectively constitute T-type
With filter network, which is II grade of filtering, and than I grade filtering has stronger filter effect, meanwhile, II grade of filtering mutually knot
Close, effectively construct the low impedance by-pass path of interference signal so that no matter how the distribution mode of earphone base changes, i.e., without
How to change by interference signal, which can effectively eliminate interference signal except coder, effectively
Prevent influence of the interference signal to head circuit.
Embodiment three
Fig. 4 is a kind of structural schematic diagram for head circuit structure that the embodiment of the present invention three provides, as shown in figure 4, earphone
Circuit structure not only includes the internal phone circuit structure 100 positioned at terminal inner in embodiment one and embodiment two, is also wrapped
Include the external headphones circuit structure 200 positioned at exterior of terminal.Specifically, external headphones circuit structure 200 can be located in earphone.
Fig. 5 is a kind of structural schematic diagram positioned at external headphones circuit structure that the embodiment of the present invention three provides, as shown in figure 5, external
Head circuit structure 200 includes external microphone line 51, external L channel line 61, external circuit signal wire 71, external right channel
Line 81 and third filter module 90；The first end of third filter module 90 is connect with external circuit signal wire 71, third filtering
The second end of module 90 is connect with external microphone line 51.
Wherein, it is inserted into the earphone interface of terminal, is realized between head circuit structure and terminal device by headset plug
Circuit connection, i.e., external microphone line 51, external L channel line 61 in realization external headphones circuit structure 200 external return
Road signal wire 71 and external right channel line 81 and internal microphone line 50, the internal left sound in internal phone circuit structure 100
The connection of diatom 60, inner loop signal line 70 and internal right channel line 80, so as to be conversed etc. by earphone.
Microphone 52 in earphone receives voice signal, and converts corresponding earphone Mike signal for the voice signal,
So that the voice signal can be transmitted normally.But frequency modulation broadcasting (Frequency Modula tion, FM) function conduct
One standard configuration function of earphone, can bring high-frequency interferencing signal, this high-frequency interferencing signal is received by microphone, then by this height
Frequency interference signal demodulates the low-frequency noise of tonal range, if low-frequency noise once is demodulated out, interference signal be will be unable to
Obtained solution, so third filter module 90 is set before microphone 52 in the present embodiment, the first of third filter module 90
End is connect with external circuit signal wire 71, and the second end of third filter module 90 is connect with external microphone line 51.
The technical solution of the present embodiment filters out high-frequency interferencing signal by third filter module 90, so that High-frequency Interference is believed
It number will not be received by microphone 52, to solve interference of the high-frequency signal to head circuit at microphone 52.
In addition to this, by the way that the first filter is arranged at the earphone base 10 in the internal phone circuit structure 100 of terminal inner
The second filter module 40 is arranged in wave module 30 at coder 20, third filter module 90 is arranged before microphone 52, comprehensively
Cover head circuit in interference signal route of transmission, can be comprehensive eliminate head circuit in interference signal.
Based on the above technical solution, it is preferred that third filter module 90 includes the 9th inductance L9 and the 9th capacitor
C9；The first end of 9th inductance L9 is connect with external circuit signal wire 71, the second end of the 9th inductance L9 respectively with the 9th capacitor
The first end and external microphone line 51 of C9 connects, the second end ground connection of the 9th capacitor C9；Alternatively, third filter module 90 includes
Magnetic bead and the tenth capacitor；The first end of magnetic bead is connect with external circuit signal wire 71, the second end of magnetic bead respectively with the tenth capacitor
First end and external microphone line 51 connect, the second end of the tenth capacitor ground connection.
Wherein, third filter module 90 may include inductance and capacitor composition filter circuit, also may include magnetic bead and
The filter circuit of capacitor composition can also include the filter circuit that resistance and capacitor form, it is preferred that third filter module 90 wraps
Include the filter circuit of inductance and capacitor composition or the filter circuit of magnetic bead and capacitor composition.Fig. 4 is only with third filter module 90
The filter circuit formed including inductance and capacitor illustrates.
It should be noted that the quantity of the first filter module 30, the second filter module 40 and third filter module 90 can
It, can also be respectively to be multiple, it is contemplated that the problem of cost, it is preferred that the filtering of the first filter module 30, second with respectively for one
Module 40 and the quantity of third filter module 90 are respectively one.
Based on the above technical solution, it is preferred that resistance value of the magnetic bead in 1GHz is B, B >=1k Ω, the tenth capacitor
Capacitance be C, 22pF≤C≤100pF.
Wherein, third filter module 90 can be the filter circuit of magnetic bead and the tenth capacitor composition.Magnetic bead makes audio signal
The interference signal of carrying is converted into thermal energy, to eliminate interference signal.
Based on the above technical solution, it is preferred that it is provided with radio-frequency devices (not shown) on earphone base, first
Filter module 30 is L, L >=3mm at a distance from radio-frequency devices.
Wherein, because being provided with the radio-frequency devices for receiving and emitting radio magnetic wave on earphone base, and earphone base
It is usually located at antenna field, so radio-frequency devices and antenna filter the first filter module 30 when receiving and emitting signal in order to prevent
It is had an impact when wave, sets L >=3mm for the first filter module 30 and radio-frequency devices distance L.Meanwhile internal phone circuit
Internal microphone line 50, internal L channel line 60, inner loop signal line 70 and internal right channel line 80 in structure 100 are arranged
For internal layer cabling, the interference of outer signals is further prevented.
Example IV
Fig. 6 is a kind of structural schematic diagram for communication apparatus that the embodiment of the present invention four provides, as shown in fig. 6, the present invention is real
Apply the communication apparatus 300 that example provides includes including terminal 310 and the earphone 320 connecting with terminal 310, this communication apparatus 300
The head circuit structure that the embodiment of the present invention one, embodiment two and embodiment three provide, has corresponding beneficial effect, here
It repeats no more.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of head circuit structure, which is characterized in that the internal phone circuit structure including being located at terminal inner, the inside
Head circuit structure includes earphone base, coder, the first filter module and the second filter module；
The first end of first filter module is connect with the earphone base, the second end of first filter module and described the
The first end of two filter modules connects；
The second end of second filter module is connect with the coder.
2. head circuit structure according to claim 1, which is characterized in that the internal phone circuit structure further includes inside
Microphone lines, internal L channel line, inner loop signal line and internal right channel line；First filter module includes the first filter
Wave circuit, the second filter circuit, third filter circuit and the 4th filter circuit；
First filter circuit is located on the internal microphone line, and the first end of first filter circuit and the ear
Base connection, the second end of first filter circuit are connect with second filter module, for filtering out the internal Mike
Interference signal in wind line；
Second filter circuit is located on the internal L channel line, and the first end of second filter circuit and the ear
Base connection, the second end of second filter circuit is connect with second filter module, for filtering out the left sound in the inside
Interference signal in diatom；
The third filter circuit is located on the inner loop signal line, and the first end of the third filter circuit with it is described
Earphone base connection, the second end of the third filter circuit are connect with second filter module, are returned for filtering out the inside
Interference signal in the signal wire of road；
4th filter circuit is located on the internal right channel line, and the first end of the 4th filter circuit and the ear
Base connection, the second end of the 4th filter circuit is connect with second filter module, for filtering out the right sound in the inside
Interference signal in diatom.
3. head circuit structure according to claim 2, which is characterized in that first filter circuit include the first inductance and
First capacitor；The first end of first inductance is connect with the earphone base, the second end of first inductance respectively with it is described
The first end of first capacitor is connected with second filter module；Second termination of the first capacitor is mainly；
Second filter circuit includes the second inductance and the second capacitor；The first end of second inductance and the earphone base connect
It connects, the second end of second inductance is connect with the first end of second capacitor and second filter module respectively；It is described
Second termination of the second capacitor is mainly；
The third filter circuit includes third inductance and third capacitor；The first end of the third inductance and the earphone base connect
It connects, the second end of the third inductance is connect with the first end of the third capacitor and second filter module respectively；It is described
Second termination of third capacitor is mainly；
4th filter circuit includes the 4th inductance and the 4th capacitor；The first end of 4th inductance and the earphone base connect
It connects, the second end of the 4th inductance is connect with the first end of the 4th capacitor and second filter module respectively；It is described
Second termination of the 4th capacitor is mainly.
4. head circuit structure according to claim 2, which is characterized in that second filter module includes the 5th filtered electrical
Road, the 6th filter circuit, the 7th filter circuit and the 8th filter circuit；
5th filter circuit is located on the internal microphone line, and the first end of the 5th filter circuit and the volume
Decoder connection, the second end of the 5th filter circuit are connect with first filter module, for filtering out the internal wheat
Interference signal in gram wind line；
6th filter circuit is located on the internal L channel line, and the first end of the 6th filter circuit and the volume
Decoder connection, the second end of the 6th filter circuit are connect with first filter module, described internal left for filtering out
Interference signal in sound channel line；
7th filter circuit is located on the inner loop signal line, and the first end of the 7th filter circuit with it is described
Coder connection, the second end of the 7th filter circuit is connect with first filter module, for filtering out the inside
Interference signal in loop signal line；
8th filter circuit is located on the internal right channel line, and the first end of the 8th filter circuit and the volume
Decoder connection, the second end of the 8th filter circuit are connect with first filter module, described internal right for filtering out
Interference signal in sound channel line.
5. head circuit structure according to claim 4, which is characterized in that the 5th filter circuit include the 5th inductance and
5th capacitor；The first end of 5th inductance is connect with the coder, the second end of the 5th inductance respectively with institute
The first end for stating the 5th capacitor is connected with first filter module；Second termination of the 5th capacitor is mainly；
6th filter circuit includes the 6th inductance and the 6th capacitor；The first end of 6th inductance and the coder
Connection, the second end of the 6th inductance are connect with the first end of the 6th capacitor and first filter module respectively；Institute
State the second termination of the 6th capacitor mainly；
7th filter circuit includes the 7th inductance and the 7th capacitor；The first end of 7th inductance and the coder
Connection, the second end of the 7th inductance are connect with the first end of the 7th capacitor and first filter module respectively；Institute
State the second termination of the 7th capacitor mainly；
8th filter circuit includes the 8th inductance and the 8th capacitor；The first end of 8th inductance and the coder
Connection, the second end of the 8th inductance are connect with the first end of the 8th capacitor and first filter module respectively；Institute
State the second termination of the 8th capacitor mainly.
6. head circuit structure according to claim 1, which is characterized in that further include the external headphones positioned at exterior of terminal
Circuit structure, the external headphones circuit structure includes external microphone line, external L channel line, external circuit signal wire, outer
Portion's right channel line and third filter module；
The first end of the third filter module is connect with the external circuit signal wire, the second end of the third filter module
It is connect with the external microphone line.
7. head circuit structure according to claim 6, which is characterized in that the third filter module include the 9th inductance and
9th capacitor；
The first end of 9th inductance is connect with the external circuit signal wire, the second end of the 9th inductance respectively with institute
The first end for stating the 9th capacitor is connected with the external microphone line, the second end ground connection of the 9th capacitor；
Alternatively, the third filter module includes magnetic bead and the tenth capacitor；
The first end of the magnetic bead is connect with the external circuit signal wire, and the second end of the magnetic bead is electric with the described tenth respectively
The first end of appearance is connected with the external microphone line, the second end ground connection of the tenth capacitor.
8. head circuit structure according to claim 7, which is characterized in that resistance value of the magnetic bead in 1GHz be B, B >=
1k Ω, the capacitance of the tenth capacitor are C, 22pF≤C≤100pF.
9. head circuit structure according to claim 1, which is characterized in that be provided with radio-frequency devices, institute on the earphone base
It is L, L >=3mm that the first filter module, which is stated, at a distance from the radio-frequency devices.
10. a kind of communication apparatus, which is characterized in that including the described in any item head circuit structures of claim 1-9.
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| CN201910054208.4A CN109743653B (en) | 2019-01-21 | 2019-01-21 | Earphone circuit structure and communication equipment |
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| CN201910054208.4A CN109743653B (en) | 2019-01-21 | 2019-01-21 | Earphone circuit structure and communication equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012507049A (en) * | 2008-10-24 | 2012-03-22 | クゥアルコム・インコーポレイテッド | System, method, apparatus and computer readable medium for coherence detection |
| CN103139678A (en) * | 2012-12-31 | 2013-06-05 | 宁波大学 | Method and device for smart phone headset jack function extension |
| CN106254981A (en) * | 2015-06-15 | 2016-12-21 | 黑莓有限公司 | Use multiplexing microphone signal to enable the earphone that active noise eliminates |
| US20170366211A1 (en) * | 2016-06-15 | 2017-12-21 | Chiun Mai Communication Systems, Inc. | Electronic device having fm antenna and method for switching fm antenna |
| CN108289266A (en) * | 2018-01-11 | 2018-07-17 | 上海展扬通信技术有限公司 | Dolby circuit and mobile terminal |
| CN108881558A (en) * | 2018-07-27 | 2018-11-23 | 华勤通讯技术有限公司 | Mobile terminal and its FM anti-jamming circuit |
| CN208258014U (en) * | 2018-05-16 | 2018-12-18 | 深圳市诚壹科技有限公司 | A kind of earphone based on differential transfer, earphone socket and terminal device |
-
2019
- 2019-01-21 CN CN201910054208.4A patent/CN109743653B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012507049A (en) * | 2008-10-24 | 2012-03-22 | クゥアルコム・インコーポレイテッド | System, method, apparatus and computer readable medium for coherence detection |
| CN103139678A (en) * | 2012-12-31 | 2013-06-05 | 宁波大学 | Method and device for smart phone headset jack function extension |
| CN106254981A (en) * | 2015-06-15 | 2016-12-21 | 黑莓有限公司 | Use multiplexing microphone signal to enable the earphone that active noise eliminates |
| US20170366211A1 (en) * | 2016-06-15 | 2017-12-21 | Chiun Mai Communication Systems, Inc. | Electronic device having fm antenna and method for switching fm antenna |
| CN108289266A (en) * | 2018-01-11 | 2018-07-17 | 上海展扬通信技术有限公司 | Dolby circuit and mobile terminal |
| CN208258014U (en) * | 2018-05-16 | 2018-12-18 | 深圳市诚壹科技有限公司 | A kind of earphone based on differential transfer, earphone socket and terminal device |
| CN108881558A (en) * | 2018-07-27 | 2018-11-23 | 华勤通讯技术有限公司 | Mobile terminal and its FM anti-jamming circuit |
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|---|---|
| CN109743653B (en) | 2020-11-10 |
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