CN205105382U - Circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit - Google Patents
Circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit Download PDFInfo
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- CN205105382U CN205105382U CN201520919967.XU CN201520919967U CN205105382U CN 205105382 U CN205105382 U CN 205105382U CN 201520919967 U CN201520919967 U CN 201520919967U CN 205105382 U CN205105382 U CN 205105382U
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- circuit
- field effect
- metal oxide
- oxide semiconductor
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- 239000004065 semiconductor Substances 0.000 claims abstract description 51
- 230000005669 field effect Effects 0.000 claims abstract description 41
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 41
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 41
- 230000008030 elimination Effects 0.000 claims description 15
- 238000003379 elimination reaction Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit, wherein, this circuit includes: treater, metal oxide semiconductor field effect transistor and offset voltage power supply, the treater includes sense terminal and output, the output of treater with metal oxide semiconductor field effect transistor's grid electricity is connected, metal oxide semiconductor field effect transistor's drain electrode with the offset voltage power supply electricity is connected, metal oxide semiconductor field effect transistor's source electrode ground connection sets up. The embodiment of the utility model provides a circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit can eliminate the earphone and insert the unjoyful POP sound that the electronic equipment in -process produced.
Description
Technical field
The utility model relates to ear phone technology field, particularly relates to a kind ofly eliminate the circuit of headset plugging POP sound and comprise the electronic equipment of this circuit.
Background technology
At present, each electronic equipment (such as: mobile phone or panel computer etc.) is equipped with GB or the American Standard connector that the earphone used is all generally four-part form band microphone (MIC, MediumInterfaceConnector) function.After processor in electronic equipment detects that earphone inserts, bias voltage power supply in electronic equipment is to the microphone signal end input offset voltage of earphone, microphone is opened, and after this, user can input audio-frequency information by the microphone on earphone to electronic equipment.
But, earphone from insert electronic equipment to be plugged completely the regular hour postpone, earphone insert electronic equipment process in, bias voltage can by the microphone signal end of earphone, seal in L channel and R channel by earphone socket contact chip, produce unjoyful POP sound.
Utility model content
The purpose of this utility model is to propose a kind ofly eliminate the circuit of headset plugging POP sound and comprise the electronic equipment of this circuit, with solve in prior art, earphone is inserted electronic equipment process in produce the problem of unjoyful POP sound.
For reaching this object, the utility model by the following technical solutions:
First aspect, the utility model embodiment provides a kind of circuit eliminating headset plugging POP sound, comprising: processor, metal oxide semiconductor field effect tube and bias voltage power supply, and described processor comprises test side and output,
The output of described processor is electrically connected with the grid of described metal oxide semiconductor field effect tube, the drain electrode of described metal oxide semiconductor field effect tube is electrically connected with described bias voltage power supply, and the source ground of described metal oxide semiconductor field effect tube is arranged;
The test side of described processor is used for the insert state of Test earphone; The output of described processor is used for after described test side detects that described earphone inserts, and in preset time period, output HIGH voltage is to the grid of described metal oxide semiconductor field effect tube, to make described metal oxide semiconductor field effect tube conducting; After described metal oxide semiconductor field effect tube conducting, described bias voltage power supply ground connection.
Second aspect, the utility model embodiment still provides a kind of electronic equipment, comprises the circuit of the elimination headset plugging POP sound that first aspect provides.
The circuit of the elimination headset plugging POP sound that the utility model embodiment provides and comprise the electronic equipment of this circuit, after the test side of processor detects that earphone inserts, the output of processor exports high level in preset time period, and high level is input to the grid of metal oxide semiconductor field effect tube, after the grid of metal oxide semiconductor field effect tube receives high level, metal oxide semiconductor field effect tube conducting, the drain electrode of metal oxide semiconductor field effect tube and source electrode electrical connection, the bias voltage power supply ground connection (because the source ground of metal oxide semiconductor field effect tube is arranged) be electrically connected with the drain electrode of metal oxide semiconductor field effect tube, and then bias voltage power supply is not to the microphone signal end input offset voltage of earphone, thus bias voltage can not by the microphone signal end of earphone, seal in L channel and R channel by earphone socket contact chip, thus unjoyful POP sound can not be produced, realize eliminating earphone and insert the POP sound produced in electronic equipment process.
Accompanying drawing explanation
In order to the technical scheme of the utility model exemplary embodiment is clearly described, one is done to the accompanying drawing used required for describing in embodiment below and simply introduce.Obviously, the accompanying drawing introduced is the accompanying drawing of a part of embodiment that the utility model will describe, instead of whole accompanying drawings, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the circuit of the elimination headset plugging POP sound that the utility model embodiment provides.
Fig. 2 is the circuit connection diagram of the circuit of the elimination headset plugging POP sound that the utility model embodiment provides.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below with reference to the accompanying drawing in the utility model embodiment, by embodiment, intactly the technical solution of the utility model is described.Obviously; described embodiment is a part of embodiment of the present utility model; instead of whole embodiments; based on embodiment of the present utility model; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all falls within protection range of the present utility model.
The utility model embodiment provides a kind of circuit eliminating headset plugging POP sound.
Fig. 1 is the structural representation of the circuit of the elimination headset plugging POP sound that the utility model embodiment provides.As shown in Figure 1, the circuit of this elimination headset plugging POP sound comprises: processor 101, metal oxide semiconductor field effect tube 102 and bias voltage power supply 103.
Wherein, processor 101 comprises test side and output.
Wherein, the output of processor 101 and the grid (G of metal oxide semiconductor field effect tube 102, gate) pole electrical connection, leakage (the D of metal oxide semiconductor field effect tube 102, date) pole is electrically connected with bias voltage power supply 103, source (S, source) the pole ground connection of metal oxide semiconductor field effect tube 102 is arranged.
Wherein, the test side of processor 101 is used for the insert state of Test earphone; The output of processor 101 is used for after above-mentioned test side detects that earphone inserts, and in preset time period, output HIGH voltage is to the grid of metal oxide semiconductor field effect tube 102, to make metal oxide semiconductor field effect tube 102 conducting; After metal oxide semiconductor field effect tube 102 conducting, bias voltage power supply 103 ground connection.
Via such scheme, after the test side of processor 101 detects that earphone inserts, the output of processor 101 exports high level in preset time period, and high level is input to the grid of metal oxide semiconductor field effect tube 102, after the grid of metal oxide semiconductor field effect tube 102 receives high level, metal oxide semiconductor field effect tube 102 conducting, the drain electrode of metal oxide semiconductor field effect tube 102 and source electrode electrical connection, bias voltage power supply 103 ground connection (because the source ground of metal oxide semiconductor field effect tube 102 is arranged) be electrically connected with the drain electrode of metal oxide semiconductor field effect tube 102, and then bias voltage power supply 103 is not to the microphone signal end input offset voltage of earphone, thus bias voltage can not by the microphone signal end of earphone, seal in L channel and R channel by earphone socket contact chip, thus unjoyful POP sound can not be produced, realize eliminating earphone and insert the POP sound produced in electronic equipment process.
The test side of processor 101 is not when detecting that earphone inserts, and the output of processor 101 does not export any voltage, that is: the voltage of output is 0; After the test side of processor 101 detects that earphone inserts, the output of processor 101 exports the positive voltage (such as: 1 volt) of certain numerical value, namely output HIGH voltage is realized, and high voltage only exports in preset time period, after preset time period, the output of processor 101 does not export any voltage, that is: the voltage of output is 0, now, metal oxide semiconductor field effect tube 102 is closed, bias voltage power supply 103 is to the microphone signal end input offset voltage of earphone, and earphone normally works.
The test side of processor 101 can be the general interrupts port in processor 101; The output of processor 101 can be the general input/output port (GPIO, GeneralPurposeInputOutput) in processor 101.
Earphone is inserted in the whole process of electronic equipment and all can not produce POP sound, then: the length of preset time period will be equal to or greater than the time of earphone insertion required for electronic equipment.The length of preset time period can realize regulating by the Control timing sequence of the general input/output port in placement processor 101.Be generally 50-300 millisecond because earphone to be inserted the time used in electronic equipment process by user, therefore, preset time period can be 50-300 millisecond.
It should be noted that, metal oxide semiconductor field effect tube 102 can be N-type.
The test side of processor 101 can be electrically connected with the first resistance.This first resistance is as isolation resistance, and the electric current export the test side of processor 101 is kept apart with the L channel of earphone and R channel, and the electric current that the test side of processor 101 is exported can not seal in L channel and R channel.
Wherein, the size of the first resistance can design according to actual needs, does not limit at this.According to the configuration of existing earphone, the size of the first resistance can be 47000 ohm.
Bias voltage power supply 103 can also be electrically connected with the second resistance.This second resistance is as biasing resistor, and bias voltage power supply 103 is by the second resistance output offset voltage.
Wherein, the size of the second resistance can design according to actual needs, does not limit at this.According to the configuration of existing earphone, the size of the second resistance can be 1500 ohm or 2200 ohm.
Fig. 2 is the circuit connection diagram of the circuit of the elimination headset plugging POP sound that the utility model embodiment provides.Fig. 2 describes the annexation of each end in electronic equipment and each end in earphone.
Be described each end in electronic equipment below: VMIC is bias voltage, it is exported by the bias voltage power supply 103 shown in Fig. 1, and this bias voltage is by resistance R
2be input in earphone, resistance R
2be exactly the second resistance described in the present embodiment; HPRP is right-channel signals output; HPLP is left channel signals output; HS_DET is for interrupting detection signal, and it is exported by the test side of the processor 101 shown in Fig. 1, and this interruption detection signal is by resistance R
1be input in earphone, resistance R
1be exactly the first resistance described in this enforcement; GPIO_SW is the voltage that the output of the processor 101 shown in Fig. 1 exports; Metal-oxide-semiconductor is the metal oxide semiconductor field effect tube 102 shown in Fig. 1, and it comprises G pole, D pole and S pole.
Below each end in earphone is described: MIC is microphone signal end; HR is right-channel signals input; HL is left channel signals input; DET is for interrupting detection signal test side; GND is earth terminal.
Below the annexation of each end in electronic equipment and each end in earphone is described: the bias voltage VMIC that the bias voltage power supply in electronic equipment exports is by resistance R
2to the microphone signal end input offset voltage VMIC in earphone; Right-channel signals output HPRP in electronic equipment inputs right-channel signals to the right-channel signals input HR in earphone; Left channel signals output HPLP in electronic equipment inputs left channel signals to the left channel signals input HL in earphone; The interruption detection signal HS_DET that the test side of the processor in electronic equipment exports passes through resistance R
1detection signal HS_DET is interrupted to the interruption detection signal test side input in earphone; The voltage GPIO_SW of the output output of the processor in electronic equipment is electrically connected the G pole of the metal-oxide-semiconductor in electronic equipment; The bias voltage VMIC that bias voltage power supply in electronic equipment exports is by resistance R
2the D pole of the metal-oxide-semiconductor in electrical connection electronic equipment; The S pole of the metal-oxide-semiconductor in electronic equipment and the earth terminal ground connection of earphone are arranged.
A line represents that earphone inserts the flow direction of bias voltage VMIC in the process of electronic equipment.As shown in A line, insert at earphone in the process of electronic equipment, GPIO_SW is high voltage, metal-oxide-semiconductor conducting, bias voltage VMIC ground connection.
B line represents that earphone inserts the flow direction of bias voltage VMIC after electronic equipment completely.As shown in B line, after earphone inserts electronic equipment completely, GPIO_SW is low-voltage, and metal-oxide-semiconductor is closed, and bias voltage VMIC is by resistance R
2to the microphone signal end input offset voltage VMIC in earphone.
It should be noted that, in the annexation shown in Fig. 2, resistance R
2(that is: resistance R between bias voltage VMIC and the G pole of metal-oxide-semiconductor
2with metal-oxide-semiconductor series connection), no matter insert in the process of electronic equipment at earphone, or earphone inserts after in electronic equipment completely, bias voltage VMIC can pass through resistance R
2.It should be noted that, resistance R
2(that is: resistance R after can also being positioned at the tie point of the G pole of bias voltage VMIC and metal-oxide-semiconductor
2in parallel with metal-oxide-semiconductor), make only to insert completely after in electronic equipment at earphone, bias voltage VMIC just can pass through resistance R
2.
The utility model embodiment still provides a kind of electronic equipment, and this electronic equipment comprises the circuit of the elimination headset plugging POP sound that above-described embodiment provides.This electronic equipment can be can with earphone with the use of any electric terminal, especially, this electric terminal can be mobile terminal.When this electric terminal is mobile terminal, the bias voltage power supply in the circuit of the elimination headset plugging POP sound of mobile terminal can be the battery of mobile terminal.
The know-why that above are only preferred embodiment of the present utility model and use.The utility model is not limited to specific embodiment described here, the various significant changes can carried out for a person skilled in the art, readjust and substitute all can not depart from protection range of the present utility model.Therefore, although be described in further detail the utility model by above embodiment, but the utility model is not limited only to above embodiment, when not departing from the utility model design, can also comprise other Equivalent embodiments more, and scope of the present utility model is determined by the scope of claim.
Claims (7)
1. eliminate a circuit for headset plugging POP sound, it is characterized in that, comprising: processor, metal oxide semiconductor field effect tube and bias voltage power supply, described processor comprises test side and output,
The output of described processor is electrically connected with the grid of described metal oxide semiconductor field effect tube, the drain electrode of described metal oxide semiconductor field effect tube is electrically connected with described bias voltage power supply, and the source ground of described metal oxide semiconductor field effect tube is arranged;
The test side of described processor is used for the insert state of Test earphone; The output of described processor is used for after described test side detects that described earphone inserts, and in preset time period, output HIGH voltage is to the grid of described metal oxide semiconductor field effect tube, to make described metal oxide semiconductor field effect tube conducting; After described metal oxide semiconductor field effect tube conducting, described bias voltage power supply ground connection.
2. the circuit of elimination headset plugging POP sound according to claim 1, is characterized in that, the test side of described processor is general interrupts port.
3. the circuit of elimination headset plugging POP sound according to claim 1, is characterized in that, the output of described processor is general input/output port.
4. the circuit of elimination headset plugging POP sound according to claim 1, it is characterized in that, the test side of described processor is electrically connected with the first resistance.
5. the circuit of elimination headset plugging POP sound according to claim 1, it is characterized in that, described bias voltage power supply is also electrically connected with the second resistance.
6. the circuit of elimination headset plugging POP sound according to claim 1, it is characterized in that, described metal oxide semiconductor field effect tube is N-type.
7. an electronic equipment, is characterized in that, comprises the circuit of the arbitrary described elimination headset plugging POP sound of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919967.XU CN205105382U (en) | 2015-11-18 | 2015-11-18 | Circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919967.XU CN205105382U (en) | 2015-11-18 | 2015-11-18 | Circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205105382U true CN205105382U (en) | 2016-03-23 |
Family
ID=55521130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520919967.XU Expired - Fee Related CN205105382U (en) | 2015-11-18 | 2015-11-18 | Circuit of eliminating earphone plug POP sound reaches electronic equipment including this circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205105382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995544A (en) * | 2017-11-16 | 2018-05-04 | 深圳芯智汇科技有限公司 | Voltage control circuit, headset type detection configuration circuit, drive circuit and method |
-
2015
- 2015-11-18 CN CN201520919967.XU patent/CN205105382U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995544A (en) * | 2017-11-16 | 2018-05-04 | 深圳芯智汇科技有限公司 | Voltage control circuit, headset type detection configuration circuit, drive circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |