CN206226696U - A kind of electronic signal processing apparatus - Google Patents
A kind of electronic signal processing apparatus Download PDFInfo
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- CN206226696U CN206226696U CN201621322785.5U CN201621322785U CN206226696U CN 206226696 U CN206226696 U CN 206226696U CN 201621322785 U CN201621322785 U CN 201621322785U CN 206226696 U CN206226696 U CN 206226696U
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Abstract
The utility model is related to a kind of electronic signal processing apparatus, including earphone jack, detecting unit and signal processing module, the detecting unit communication link is connected to handover module, the L channel line of earphone jack is electrically connected with the first drive circuit, first drive circuit is electrically connected with the first loudspeaker, the R channel line of earphone jack is electrically connected with the second drive circuit, and the second drive circuit is electrically connected with the second loudspeaker, and L channel line is connected with R channel line；4th signal processing unit is electrically connected with first voltage output unit, and first voltage output unit is connected with second voltage output unit, and the output end of second voltage output unit is connected with the power end of the first drive circuit and the power end of the second drive circuit respectively.External power source need not be increased and be capable of achieving noise elimination and the communication function between mobile communication device and external equipment.
Description
Technical field
The utility model is related to a kind of electronic signal processing apparatus.
Background technology
Existing mobile communication device such as mobile phone etc., and be integrated with the external equipment of ear microphone function and connect
Mouthful, it is made up of four circuits, respectively ground wire, R channel line, L channel line and microphone lines, because earpiece side is without only
Vertical power supply, is also connected without All other routes with mobile phone, so if to realize additional functionality, for example noise is eliminated and Mobile Communications
Communication function between device and external equipment etc., it is necessary to which the extra power supply that increases is made with providing the circuit in above-mentioned additional functionality
With, common technique is that this problem is solved to change the structure of existing mobile phone or earphone interface, but so will with general mobile phone,
Earphone specification cannot be compatible.
Therefore, develop it is a kind of need not increase the signal processing apparatus that external power source just can abate the noise, it is industry to become
The problem of interior personage's urgent need to resolve.
Utility model content
The utility model proposes a kind of electronic signal processing apparatus, the deficiency of above-mentioned aspect in existing product is overcome.
The purpose of this utility model is achieved through the following technical solutions：
A kind of electronic signal processing apparatus, including earphone jack, detecting unit and signal processing module, the detecting unit
Communication link is connected to handover module, and the handover module includes first switch unit, second switch unit, the 3rd switch element, the
Four switch elements, the 5th switch element, the 6th switch element, the 7th switch element, the 8th switch element, the 9th switch element,
Tenth switch element, the 11st switch element, first resistor unit；The L channel line of the earphone jack is by being disposed with
The circuit of the 6th switch element and the 3rd switch element is electrically connected with the first drive circuit, and first drive circuit passes through first
Voltage pull-down circuits are electrically connected with the first loudspeaker, and the R channel line of the earphone jack is electrically connected with the second drive circuit, institute
State the second drive circuit and the second loudspeaker be electrically connected with by second voltage pull-down circuit, the L channel line and R channel line it
Between be connected by being provided with the circuit of the 4th switch element；The signal processing module includes the first signal processing unit, the
Binary signal processing unit, the 3rd signal processing unit and the 4th signal processing unit；The 4th signal processing unit electrical connection
There is first voltage output unit, the first voltage output unit is single by being disposed with second switch unit and the 8th switch
The connection of unit has a second voltage output unit, the output end of the second voltage output unit respectively with the first drive circuit
Power end and the power end of the second drive circuit be connected；First resistor unit, described first are set on the R channel line
Resistance unit electrically connects the 3rd signal processing unit, the 3rd signal transacting list by being provided with the circuit of the tenth switch element
Unit communicates to connect first voltage output unit by the 11st switch element.
Further, the tenth switch element is n type field effect transistor, and the 3rd signal processing unit is by modulation the
The waveform of ten switch element gates, control flows through the electric current of the tenth switch element.
Further, the first switch unit, second switch unit, the 3rd switch element, the 4th switch element, the 5th
Switch element, the 6th switch element, the 7th switch element, the 8th switch element or the 9th switch element are one-way switch.
Further, the first voltage output unit or second voltage output unit can be low-dropout regulator.
Further, first signal processing unit can be digital analog converter.
The beneficial effects of the utility model are：External power source need not be increased and be capable of achieving noise elimination and Mobile Communications dress
Put the communication function between external equipment.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the circuit diagram of the electronic signal processing apparatus described in the utility model embodiment；
Fig. 2 is the circuit diagram of the drive circuit according to Fig. 1.
In figure：
1st, external equipment；2nd, mobile communication device；3rd, the first drive circuit；4th, first voltage pull-down circuit；5th, second drive
Dynamic circuit；6th, second voltage pull-down circuit；10th, first switch unit；11st, second switch unit；12nd, the 3rd switch element；13、
4th switch element；14th, the tenth switch element；15th, first resistor unit；16th, second voltage output unit；17th, the 3rd signal
Processing unit；21st, first voltage output unit；22nd, the 5th switch element；23rd, the 6th switch element；24th, the 7th switch element；
25th, the 8th switch element；26th, the 9th switch element；27th, the first signal processing unit；28th, secondary signal processing unit；29th,
Four signal processing units；R1, first resistor；R2, second resistance；R3,3rd resistor；R4, the 4th resistance；R5, the 5th resistance；
R6, the 6th resistance；R7, the 7th resistance；R8, the 8th resistance；Q1, first switch pipe；Q2, second switch pipe；Q3, the 3rd switch
Pipe；Q4, the 4th switching tube；Q5, the 5th switching tube；Q6, the 6th switching tube；C1, the first electric capacity；C2, the second electric capacity；C3, the 3rd
Electric capacity.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the scope of the utility model protection.
As shown in figure 1, a kind of electronic signal processing apparatus according to the utility model embodiment, including earphone is inserted
Hole, detecting unit and signal processing module, the detecting unit communication link are connected to handover module, and the handover module includes first
Switch element 10, second switch unit 11, the 3rd switch element 12, the 4th switch element 13, the 5th switch element the 22, the 6th are opened
Unit 23, the 7th switch element 24, the 8th switch element 25, the 9th switch element 26, the tenth switch element the 14, the 11st is closed to open
Close unit, first resistor unit 15；The L channel line of the earphone jack is by being disposed with the 6th switch element 23 and
The circuit of three switch elements 12 is electrically connected with the first drive circuit 3, and first drive circuit 3 passes through first voltage pull-down circuit
4 are electrically connected with the first loudspeaker, and the R channel line of the earphone jack is electrically connected with the second drive circuit 5, and described second drives
Circuit 5 is electrically connected with the second loudspeaker by second voltage pull-down circuit 6, by setting between the L channel line and R channel line
The circuit for being equipped with the 4th switch element 13 is connected；The signal processing module includes that the first signal processing unit 27, second is believed
Number processing unit 28, the 3rd signal processing unit 17 and the 4th signal processing unit 29；The electricity of 4th signal processing unit 29
First voltage output unit 21 is connected with, the first voltage output unit 21 is by being disposed with the He of second switch unit 11
The connection of the 8th switch element 25 has second voltage output unit 16, the output end point of the second voltage output unit 16
It is not connected with the power end of the first drive circuit 3 and the power end of the second drive circuit 5；First is set on the R channel line
Resistance unit 15, the first resistor unit 15 electrically connects the 3rd signal transacting by being provided with the circuit of the tenth switch element 14
Unit 17, the 3rd signal processing unit 17 communicates to connect first voltage output unit 21 by the 11st switch element.
In a specific embodiment of the present utility model, the tenth switch element 14 is n type field effect transistor, the
Three signal processing units 17 control to flow through the electricity of the tenth switch element 14 by the waveform of the modulation gate of the tenth switch element 14
Stream.
In a specific embodiment of the present utility model, the first switch unit 10, second switch unit the 11, the 3rd
Switch element 12, the 4th switch element 13, the 5th switch element 22, the 6th switch element 23, the 7th switch element the 24, the 8th are opened
It is one-way switch to close the switch element 26 of unit 25 or the 9th.
In a specific embodiment of the present utility model, the first voltage output unit 21 or second voltage output are single
Unit 26 can be low-dropout regulator.
In a specific embodiment of the present utility model, first signal processing unit 27 can be digital analog converter.
Above-mentioned technical proposal of the present utility model is understood for convenience, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
Because the second drive circuit 5 is consistent with the first drive circuit 3, the second drive circuit 5 is united with the first drive circuit 3
Referred to as drive circuit is described.
In power up, the Enable Pin of drive circuit is without control signal input, the power supply VCC1 and second voltage
Output unit is connected, and the colelctor electrode of first switch pipe Q1 is supplied power to after series resistance R1, and power supply VCC1 passes through the described 4th
Resistance R4 and second resistance R2 are connected to the base stage of first switch pipe Q1, the base stage of first switch pipe Q1 and the voltage of colelctor electrode
Difference reaches cut-in voltage so that first switch pipe Q1 is turned on, and the colelctor electrode of first switch pipe Q1 is pulled low, first switch pipe Q1's
Collector voltage acts on the base stage of second switch pipe Q2, emitter stage and the power supply electricity of second switch pipe Q2 by 3rd resistor R3
Source VCC is connected, now second switch pipe Q2 conductings, and the colelctor electrode output high level of second switch pipe Q2 simultaneously acts on first voltage
Pull-down circuit 4 and second voltage pull-down circuit 400, first voltage pull-down circuit 4 and second voltage pull-down circuit 6 are according to high level
Conducting.
After upper electricity completion, system sounds are normal, CONTROL is pulled low, the Enable Pin input low level of drive circuit, electricity
Press and be connected to the base stage of first switch pipe Q1 and end first switch pipe Q1 by second resistance R2, now first switch pipe
The colelctor electrode of Q1 is pulled to power supply VCC1 by first resistor R1, so that the current collection extremely high level of first switch pipe Q1,
The collector voltage of first switch pipe Q1 acts on the base stage of second switch pipe Q2 and makes second switch pipe by 3rd resistor R3
Q2 ends, and the colelctor electrode of second switch pipe Q2 output low level simultaneously acts on first voltage pull-down circuit 4 and second voltage is drop-down
Circuit 400, first voltage pull-down circuit 4 and second voltage pull-down circuit 6 end according to low level.
It is consistent with the operation principle of power up sound intermediate frequency noise suicide circuit due to powering off, no longer describe in detail herein.
Drive circuit is also parallel to the emitter stage and collection of first switch pipe Q1 including the first electric capacity C1, the first electric capacity C1
Between electrode.First electric capacity C1 plays a part of to prevent second switch pipe Q2 output voltages to be mutated, due to electric capacity both end voltage not
Can be mutated, after first switch pipe Q1 conductings, cause that the second switch pipe controlled terminal voltages of Q2 slowly decline by the first electric capacity C1,
So that second switch pipe Q2 output voltages slowly rise, which prevent the audio noise caused by voltage jump from audio
R channel and audio L channel are exported.
First voltage pull-down circuit 4 includes the 5th resistance R5 and the 3rd switching tube Q3, wherein the 3rd switching tube Q3 is three poles
Pipe or FET, illustrate in the present embodiment so that the 3rd switching tube Q3 is NPN type triode as an example.Specifically, described
The first end of five resistance R5 is connected with the output end of the drive circuit, and second end of the 5th resistance R5 is opened with the described 3rd
Close base stage (i.e. input) connection of pipe Q3, colelctor electrode (i.e. output end) and the audio L channel of the 3rd switching tube Q3
Output terminals A udio-L is connected, and audio L channel output terminals A udio-L connects the first loudspeaker, the hair of the 3rd switching tube Q3
Emitter grounding.
After 3rd switching tube Q3 conductings, the current collection extremely low level of the 3rd switching tube Q3, now audio L channel output end
Audio-L is pulled low ground connection, so as to cut off the output of audio noise.
The first voltage pull-down circuit 4 can also include the 6th resistance R6 and the 4th switching tube Q4, the 4th switching tube Q4
It is NPN type triode；The first end of the 6th resistance R6 is connected with the output end of the drive circuit, the 6th resistance R6
The second end be connected with the base stage of the 4th switching tube Q4, the emitter stage (i.e. output end) of the 4th switching tube Q4 with it is described
Audio L channel output terminals A udio-L is connected, the grounded collector of the 4th switching tube Q4.
After 4th switching tube Q4 conductings, the passage that an audio L channel output terminals A udio-L is connected with ground is increased, plus
The fast elimination of audio-frequency noise.
The first voltage pull-down circuit 4 also first end and the sound including the second electric capacity C2, the second electric capacity C2
Frequency L channel output terminals A udio-L is connected, the second end ground connection of the second electric capacity C2.It should be noted that the second electric capacity C2
External interference signals can be eliminated, audio-frequency noise is further eliminated.
Drive circuit exports high level to first voltage pull-down circuit 4, that is, export high level to the 3rd switching tube Q3 and the
The base stage of four switching tube Q4 causes that the 3rd switching tube Q3 and the 4th switching tube Q4 are turned on, so the colelctor electrode of the 3rd switching tube Q3 and
The transmitting extremely low level of the 4th switching tube Q4, now, audio L channel output terminals A udio-L is pulled low ground connection, so as to cut off
The output of audio noise.
After upper electricity completion, system sounds are normal, drive circuit exports low level to first voltage pull-down circuit 4, i.e., defeated
Go out low level to the base stage of the 3rd switching tube Q3 and the 4th switching tube Q4 so that the 3rd switching tube Q3 and the 4th switching tube Q4 cuts
And then audio L channel is exported only, and then the colelctor electrode of the 3rd switching tube Q3 and the emitter stage of the 4th switching tube Q4 are not pulled low,
End Audio-L level is not pulled low, and now audio signal is normally exported.
The second voltage pull-down circuit 6 includes the 7th resistance R7 and the 5th switching tube Q5, wherein the 5th switching tube Q5 is
NPN type triode, the first end of the 7th resistance R7 is connected with the output end of the drive circuit, the 7th resistance R7's
Second end is connected with the base stage of the 5th switching tube Q5, colelctor electrode (i.e. output end) and the sound of the 5th switching tube Q5
Frequency R channel output terminals A udio-R is connected, and audio R channel output terminals A udio-R is connected with the second loudspeaker, and the described 5th opens
Close the grounded emitter of pipe Q5.
After 5th switching tube Q5 conductings, the current collection extremely low level of the 5th switching tube Q5, now audio R channel output end
Audio-R is pulled low ground connection, so as to cut off the output of audio noise.
The second voltage pull-down circuit 6 also includes that the 8th resistance R8 and the 6th switching tube Q6, the 6th switching tube Q6 are NPN
Type triode；The first end of the 8th resistance R8 is connected with the output end of the drive circuit, and the of the 8th resistance R8
Two ends are connected with the base stage of the 6th switching tube Q6, emitter stage (i.e. output end) and the audio of the 6th switching tube Q6
R channel output terminals A udio-R is connected, the grounded collector of the 6th switching tube Q6.
After 6th switching tube Q6 conductings, the passage that an audio R channel output terminals A udio-R is connected with ground is increased, plus
The fast elimination of audio-frequency noise.
Second voltage pull-down circuit 6 also includes the 3rd electric capacity C3, and the first end of the 3rd electric capacity C3 is right with the audio
Sound channel output terminals A udio-R is connected, and the second end ground connection of the 3rd electric capacity C3, the 3rd electric capacity C3 can eliminate external disturbance letter
Number, further eliminate audio-frequency noise.
Handover module may include to be arranged at the first switch unit 10 of external equipment 1, second switch unit 11, the 3rd switch
The switch element 13 of unit 12 and the 4th；And it is arranged at the 5th switch element 22, the 6th switch element of mobile communication device 2
23rd, the 7th switch element 24, the 8th switch element 25 and the 9th switch element 26；Tenth switch element the 14, the 11st is switched
Unit, is arranged at external equipment 1；First resistor unit 15, is arranged at external equipment 1, is connected with the tenth switch element 14.
First voltage output unit 21 exports the first operating voltage（Such as 3V）To external equipment 1, second voltage output is single
Unit 16, is arranged at external equipment 1, is used to export the second operating voltage（Such as 1.8V）.
Signal processing module may include to be arranged at the first signal processing unit 27, secondary signal of mobile communication device 2
Reason unit 28；Be arranged at the 3rd signal processing unit 17 of external equipment 1, be used to control to flow through the tenth switch element 14 or this
The electric current of 11 switch elements；4th signal processing unit 29, is arranged at mobile communication device 2.
When mobile communication device 2 is at present music pattern, and when detecting unit 3 judges that the external equipment 1 is at present music
During pattern, first switch unit 10, the 3rd switch element 12, the 6th switch element 23, the 7th switch element 24 and the 9th switch
Unit 26 is turned on, and second switch unit 11, the 4th switch element 13, the 5th switch element 22 are opened a way with the 8th switch element 25；
First voltage output unit 21 exports the first operating voltage, and through first switch unit 10, the 7th switch element 24, is sent to
Second voltage output unit 16 is changed, and second voltage output unit 16 transmits extremely driven by the second operating voltage of conversion again
Dynamic circuit, so that drive circuit performs related function.
The L channel sound source wire signal that earphone jack is sent, is conveyed directly to the first drive circuit 3；Earphone jack is sent out
The R channel sound source wire signal for going out passes through the 3rd switch element 12 and the 6th switch element 23, is sent to the first drive circuit 5；By
Exist in first resistor unit 15, certain electric current will be extracted from circuit, the electric current will flow through the tenth switch of series connection with it
Unit 14, the 3rd signal processing unit 17 controls the electric current for flowing through the tenth switch element 14 to produce current signal, electric current letter
Number will be sent in mobile communication device 2, and the 4th signal processing unit 29 is exported by detecting first voltage output unit 21
Electric current, obtain the current signal, and it is digital pulse signal to restore it, and is decoded by secondary signal processing unit 28, and will
Its result sends into the first signal processing unit 27 to produce analog voltage signal, reaches mobile communication device 2 with this and is set with outside
Communication function between standby 1.
When mobile communication device 2 is at present call mode, and it is at present call mould when detecting unit judges the external equipment 1
During formula, second switch unit 11, the 4th switch element 13, the 5th switch element 22, the 8th switch element 25 and the 9th switch are single
Unit 26 is turned on, and first switch unit 10, the 3rd switch element 12, the 6th switch element 23 are opened a way with the 7th switch element 24；Should
First voltage output unit 21 exports the first operating voltage, and through second switch unit 11, the 8th switch element 25, is sent to
The second voltage output unit 16 is changed, and the second voltage output unit 16 is transmitted by the second operating voltage of conversion again
To the drive circuit, so that the drive circuit performs corresponding function；The L channel sound source wire signal that the earphone jack is sent,
It is conveyed directly to the drive circuit；The resistance of correspondence first resistor unit 15 and the tenth switch element 14 is provided with R channel line
And switch, such as the 11st switch element, the 3rd signal processing unit 17 control to flow through the electric current of the 11st switch element with
Current signal is produced, the current signal will be sent in mobile communication device 2, and the 4th signal processing unit 29 is by detection the
The electric current of the output of one voltage output unit 21, obtains the current signal, and it is digital pulse signal to restore it, and second is believed by this
Number processing unit 28 is decoded, and its result is sent into first signal processing unit 27 to produce analog voltage signal, is reached with this
Communication function between mobile communication device 2 and external equipment 1.
In sum, by above-mentioned technical proposal of the present utility model, disappear without increasing the i.e. achievable noise of external power source
Except and communication function between mobile communication device and external equipment.
The utility model is not limited to above-mentioned preferred forms, and anyone can draw under enlightenment of the present utility model
Other various forms of products, however, make any change in its shape or structure, it is every with same as the present application or phase
Approximate technical scheme, all falls within protection domain of the present utility model.
Claims (5)
1. a kind of electronic signal processing apparatus, including earphone jack, detecting unit and signal processing module, the detecting unit lead to
Letter is connected with handover module, it is characterised in that the handover module includes that first switch unit, second switch unit, the 3rd open
Close unit, the 4th switch element, the 5th switch element, the 6th switch element, the 7th switch element, the 8th switch element, the 9th
Switch element, the tenth switch element, the 11st switch element, first resistor unit；The L channel line of the earphone jack passes through
The circuit for being disposed with the 6th switch element and the 3rd switch element is electrically connected with the first drive circuit, and described first drives electricity
Road is electrically connected with the first loudspeaker by first voltage pull-down circuit, and the R channel line of the earphone jack is electrically connected with the second drive
Dynamic circuit, second drive circuit is electrically connected with the second loudspeaker by second voltage pull-down circuit, the L channel line and
It is connected by being provided with the circuit of the 4th switch element between R channel line；The signal processing module is included at the first signal
Reason unit, secondary signal processing unit, the 3rd signal processing unit and the 4th signal processing unit；The 4th signal transacting list
Unit is electrically connected with first voltage output unit, and the first voltage output unit is by being disposed with second switch unit and
The connection of eight switch elements has a second voltage output unit, and the output end of the second voltage output unit is respectively with first
The power end of the power end of drive circuit and the second drive circuit is connected；First resistor unit is set on the R channel line,
The first resistor unit electrically connects the 3rd signal processing unit, the 3rd letter by being provided with the circuit of the tenth switch element
Number processing unit communicates to connect first voltage output unit by the 11st switch element.
2. a kind of electronic signal processing apparatus according to claim 1, it is characterised in that the tenth switch element is N
Type field-effect transistor, the 3rd signal processing unit flows through the tenth and opens by the waveform for modulating the tenth switch element gate, control
Close the electric current of unit.
3. a kind of electronic signal processing apparatus according to claim 2, it is characterised in that the first switch unit,
Two switch elements, the 3rd switch element, the 4th switch element, the 5th switch element, the 6th switch element, the 7th switch element,
8th switch element or the 9th switch element are one-way switch.
4. a kind of electronic signal processing apparatus according to claim 3, it is characterised in that the first voltage output unit
Or second voltage output unit can be low-dropout regulator.
5. a kind of electronic signal processing apparatus according to claim 4, it is characterised in that first signal processing unit
It can be digital analog converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322785.5U CN206226696U (en) | 2016-12-05 | 2016-12-05 | A kind of electronic signal processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322785.5U CN206226696U (en) | 2016-12-05 | 2016-12-05 | A kind of electronic signal processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226696U true CN206226696U (en) | 2017-06-06 |
Family
ID=58785276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621322785.5U Expired - Fee Related CN206226696U (en) | 2016-12-05 | 2016-12-05 | A kind of electronic signal processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020063590A1 (en) * | 2018-09-26 | 2020-04-02 | 华为技术有限公司 | Multiplexing circuit and mobile terminal |
-
2016
- 2016-12-05 CN CN201621322785.5U patent/CN206226696U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020063590A1 (en) * | 2018-09-26 | 2020-04-02 | 华为技术有限公司 | Multiplexing circuit and mobile terminal |
| RU2761602C1 (en) * | 2018-09-26 | 2021-12-10 | Хонор Дивайс Ко., Лтд. | Multiplexing scheme and mobile terminal |
| US11445276B2 (en) | 2018-09-26 | 2022-09-13 | Honor Device Co., Ltd. | Multiplexing circuit and mobile terminal |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20181205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |