CN109218871A - Earphone interface circuit, audio mould group and electronic equipment - Google Patents
Earphone interface circuit, audio mould group and electronic equipment Download PDFInfo
- Publication number
- CN109218871A CN109218871A CN201710517585.8A CN201710517585A CN109218871A CN 109218871 A CN109218871 A CN 109218871A CN 201710517585 A CN201710517585 A CN 201710517585A CN 109218871 A CN109218871 A CN 109218871A
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- China
- Prior art keywords
- signal
- mould group
- earphone interface
- interface circuit
- audio
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Headphones And Earphones (AREA)
- Stereophonic Arrangements (AREA)
Abstract
The disclosure is directed to a kind of earphone interface circuit, audio mould group and electronic equipments.Wherein, by the way that logical operation mould group is arranged for earphone interface circuit, so that logical operation mould group can obtain control signal by detection signal and switching signal operation, audio coding decoding mould group to the microphone output audio signal or can stop to the microphone output audio signal according to above-mentioned control signal.When extracting four-section type headset connector, the pin of the microphone no longer receives output audio signal, and sound channel signal pin and microphone signal the pin collision of four-section type headset connector would not generate voltage signal, thus avoid human ear and hear noise.
Description
Technical field
This disclosure relates to electronic technology field more particularly to earphone interface circuit, audio mould group and electronic equipment.
Background technique
In the related art, when four-part form Audio Jack earphone is extracted from earphone interface, the sound channel signal of Earphone joint
Pin can encounter the microphone signal pin in earphone interface, cause to generate voltage signal in sound channel, which travels to
Noise, i.e. POP sound are formed after human ear.
Summary of the invention
To overcome the problems in correlation technique, the disclosure provides a kind of earphone interface circuit, audio mould group and electronics
Equipment.
According to the disclosure in a first aspect, proposing a kind of earphone interface circuit, which includes:
Mould group is controlled, can be used for receiving the detection signal for being directed to four-section type headset plug state, and issue and the detection
The corresponding switching signal of signal；Wherein, when the plug state becomes dial-out state from insert state, the detection signal by
First signal becomes second signal, and the switching signal becomes fourth signal from third signal；
Logical operation mould group can receive the detection signal and the switching signal, and by the detection signal and cut
It changes signal operation and obtains control signal；
Audio coding decoding mould group is connected with the logical operation mould group, to obtain the control signal；The audio compiles solution
Code mould group is also connected with the microphone of electronic equipment, for being believed according to the control when the plug state is insert state
Number to the microphone output audio signal, and when the plug state is extraction state, according in the control signal
Only to the microphone output audio signal.
Optionally, TYPE-C connector by interconnecting device and the four-section type headset fittings, and issues the inspection
Survey signal.
Optionally, four-section type headset seat, and four-section type headset fittings, and issue the detection signal.
Optionally, the logical operation mould group includes OR circuit, and the first input end of the OR circuit is for receiving
The detection signal, the second input terminal of the OR circuit are connected to the control mould group to obtain the switching signal.
Optionally, the logical operation mould group further includes at least one AND gate circuit, not circuit.
Optionally, the second signal includes the square-wave signal started with high level signal, and the control signal includes height
Level signal.
Optionally, the earphone interface circuit further include:
Audio/data switching switch, is connected to the control mould group, to obtain the switching signal, connects the earphone
Mouth circuit switches between the voice-frequency channel and data path
Optionally, the earphone interface circuit further include:
Ground connection mould group is connected to when the four-section type headset connector is in insert state with the TYPE-C connector, with
Make the first signal low level signal.
According to the second aspect of the disclosure, a kind of audio mould group is proposed, which includes above-mentioned earphone interface circuit.
According to the third aspect of the disclosure, a kind of electronic equipment is proposed, which includes: above-mentioned earphone interface circuit
Or above-mentioned audio mould group.
The technical scheme provided by this disclosed embodiment can include the following benefits:
As can be seen from the above embodiments, the disclosure is by being arranged logical operation mould group for earphone interface circuit, so that logic is transported
Control signal can be obtained by detection signal and switching signal operation by calculating mould group.When extracting four-section type headset connector, audio
Encoding and decoding mould group can stop according to above-mentioned control signal to the microphone output audio signal, the sound channel of four-section type headset connector
Signal pins and the collision of microphone signal pin would not generate voltage signal, thus avoid human ear and hear noise.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 a is a kind of earphone interface circuit figure in the related technology；
Fig. 1 b is a kind of structural schematic diagram of four-section type headset connector in the related technology；
Fig. 2 is a kind of earphone interface circuit figure of one exemplary embodiment of the disclosure；
A kind of earphone interface circuit figure of Fig. 3 a disclosure another exemplary embodiment；
A kind of logical operation chip structure figure of one exemplary embodiment of Fig. 3 b disclosure；
A kind of signal intensity comparison diagram of earphone interface circuit of one exemplary embodiment of Fig. 3 c disclosure；
A kind of earphone interface circuit figure of Fig. 4 disclosure another exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
Fig. 1 a is a kind of earphone interface circuit figure in the related technology；Fig. 1 b is a kind of four-section type headset connector in the related technology
Structural schematic diagram.Earphone interface circuit as shown in Figure 1a includes: control mould group and audio coding decoding mould group.Wherein, it controls
Mould group can be used for receive be directed to four-section type headset plug state detection signal, and to the audio coding decoding mould group send and institute
State the corresponding switching signal of detection signal.Above-mentioned audio coding decoding mould group is connected with the microphone of electronic equipment, at four sections
When the plug state of formula earphone is insert state, according to the control signal to the microphone output audio signal；And
When the plug state of four-section type headset is extraction state, stopped to export audio letter to the microphone according to the control signal
Number.
When extracting four-section type headset connector A, the detection signal that the control mould group obtains is by first signal
Become second signal.Since switching signal control mould group is obtained according to detection signal by processing, and the place of above-mentioned signal
The switching signal that reason process causes the control mould group to issue becomes fourth signal by delay from third signal.Therefore,
Audio coding decoding mould group is unable to the extraction of summary responses earphone and stops to the microphone output audio signal.Such as Fig. 1 b institute
Show, four-section type headset connector A includes: L channel section A1, right channel section A2, microphone section A3 and ground connection section A4.?
When extracting four-section type headset connector A, the L channel section A1 of four-section type headset connector A and the microphone signal pin of earphone interface
Collision will generate voltage signal, and above-mentioned voltage signal travels to human ear and forms noise.
To solve the problems in the relevant technologies, the disclosure improves the structure of earphone interface circuit, is described below:
Fig. 2 is a kind of earphone interface circuit figure of one exemplary embodiment of the disclosure.Earphone interface circuit as shown in Figure 2
It may include: control mould group, logical operation mould group and audio coding decoding mould group.Wherein, can be used for receiving for four-section type headset
The detection signal of plug state, and issue switching signal corresponding with the detection signal.Connect above-mentioned logical operation mould group can
The detection signal and the switching signal are received, and control signal is obtained by detection signal and switching signal operation.Wherein, sound
Frequency encoding and decoding mould group may include detection pin, which is connected to receive control letter with the output end of logical operation mould group
Number.Above-mentioned audio coding decoding mould group is connected with the microphone of electronic equipment, is insertion for the plug state in four-section type headset
When state, according to the control signal to the microphone output audio signal；And it is in the plug state of four-section type headset
When extraction state, stopped according to the control signal to the microphone output audio signal.
Using the earphone interface circuit in above-described embodiment, while extracting four-section type headset connector, audio coding decoding
Mould group stops immediately to the microphone output audio signal, at this time the L channel section and earphone interface of four-section type headset connector
The collision of microphone signal pin would not generate voltage signal again, and then avoid at human ear formation noise.
In the above-described embodiments, the earphone interface circuit can be applied to include TYPE-C connector electronic equipment,
Can be used for include four-section type headset seat electronic equipment.The specific embodiment of above-mentioned two situations is carried out below exemplary
Illustrate:
A kind of earphone interface circuit figure of Fig. 3 a disclosure another exemplary embodiment.As shown in Figure 3a, when the earphone connects
When mouth circuit is applied to the electronic equipment including TYPE-C connector, four-section type headset connector is connected to above-mentioned by interconnecting device
TYPE-C connector.
Above-mentioned earphone interface circuit may include: control mould group, logical operation mould group and audio coding decoding mould group.Wherein,
It can be used for receiving the detection signal for being directed to four-section type headset plug state, and issue switching letter corresponding with the detection signal
Number.So that above-mentioned logical operation mould group is can receive the detection signal and the switching signal, and by the detection signal and cuts
It changes signal operation and obtains control signal.Audio coding decoding mould group may include detection pin, the detection pin and logical operation mould
The output end of group is connected to receive control signal.Above-mentioned audio coding decoding mould group is connected with the microphone of electronic equipment, is used for
When the plug state of four-section type headset is insert state, according to the control signal to the microphone output audio signal；With
And when the plug state of four-section type headset is extraction state, stopped to export audio to the microphone according to the control signal
Signal.
When the four-section type headset connector is extracted, the detection signal that the control mould group obtains is believed by described first
Number become second signal, the switching signal that the control mould group issues becomes fourth signal by delay from third signal.
A kind of logical operation modular structure figure of one exemplary embodiment of Fig. 3 b disclosure；The one of one exemplary embodiment of Fig. 3 c disclosure
The signal intensity comparison diagram of kind earphone interface circuit is based on TYPE-C interface protocol, the second letter as shown in Fig. 3 a, Fig. 3 b, Fig. 3 c
It number may include square-wave signal.In addition, above-mentioned first signal and third signal can be low level signal, fourth signal be can wrap
Include high level signal.Above-mentioned logical operation mould group may include OR circuit, and the first input end of the OR circuit can obtain institute
Detection signal is stated, the second input terminal is connected to control mould group to obtain switching signal.When the four-section type headset connector is extracted,
Detection signal is second signal, and due to the delay of third signal and fourth signal transformation, which remains as the
Three signals.Therefore, after the operation of OR circuit, the control signal of the output end output of OR circuit is high level signal.
In the above-described embodiments, the first signal can be realized by being set to the ground connection chip of the earphone interface circuit, when
When four-section type headset connector is in insert state, ground connection mould group is connected to the TYPE-C connector, so that first signal
For low level signal.
In the above-described embodiments, logical operation mould group can also include at least one AND gate circuit, not circuit.For example,
Operation result progress and door operation to above-mentioned OR circuit, or NOT gate twice is carried out to the operation result of above-mentioned OR circuit and is transported
Calculate, etc..Above-mentioned logical operation mould group does not carry out the logical operation circuit specifically included for the purpose of corresponding operation result
Limitation.
In the above-described embodiments, which can also include audio/data switching switch, the audio/data
Switching switch is connected to the control mould group, to obtain the switching signal, keeps the earphone interface circuit logical in the audio
Switch between road and data path.
A kind of earphone interface circuit figure of Fig. 4 disclosure another exemplary embodiment.In embodiment as shown in Figure 4, ear
Machine interface circuit also can be applied to include four-section type headset seat electronic equipment, the earphone interface circuit may include: control
Mould group, logical operation mould group and audio coding decoding mould group.Wherein, control mould group, which can be used for receiving, plugs shape for four-section type headset
The detection signal of state, and issue switching signal corresponding with the detection signal.When extracting the four-section type headset connector, institute
Stating the detection signal that control mould group obtains becomes second signal from first signal, and the control mould group issues described
Switching signal becomes fourth signal by delay from third signal.It in one embodiment, can be by four-section type headset seat
The monitoring of voltage change obtains above-mentioned detection signal on audio signal pin, therefore above-mentioned first signal and third signal can be with
Including low level signal, second signal and fourth signal may include high level signal.
So that above-mentioned logical operation mould group is can receive the detection signal and the switching signal, and passes through the detection signal
Control signal is obtained with switching signal operation.Above-mentioned logical operation mould group may include OR circuit, and the first of the OR circuit
Input terminal can obtain detection signal, and the second input terminal is connected to control mould group to obtain switching signal.When the four-section type headset
When connector is extracted, detection signal is second signal, due to the delay of third signal and fourth signal transformation, the instantaneous switching letter
Number remain as third signal.Therefore, after the operation of OR circuit, the control signal of the output end output of OR circuit is height
Level signal.
It should be noted that above-mentioned logical operation mould group can also include at least one AND gate circuit, not circuit.Example
Such as, to the operation result progress of above-mentioned OR circuit and door operation, or the operation result of above-mentioned OR circuit is carried out non-twice
Door operation, etc..Above-mentioned logical operation mould group is for the purpose of corresponding operation result, not to the logical operation circuit specifically included
It is limited.
In one embodiment, audio coding decoding mould group may include detection pin, the detection pin and logical operation mould group
Output end be connected to receive control signal.Above-mentioned audio coding decoding mould group is connected with the microphone of electronic equipment, for four
When the plug state of segmentation earphone is insert state, according to the control signal to the microphone output audio signal；And
When the plug state of four-section type headset is extraction state, stopped to export audio letter to the microphone according to the control signal
Number.
For the disclosure it is further proposed that a kind of audio mould group, which includes above-mentioned earphone interface circuit.The audio mould
Group may include audio player etc., and the disclosure is limited not to this.
The disclosure is it is further proposed that a kind of electronic equipment, the electronic equipment include above-mentioned earphone interface circuit or above-mentioned audio
Mould group.The electronic equipment may include mobile phone, computer etc., and the disclosure is limited not to this.
Those skilled in the art will readily occur to the disclosure after considering specification and practicing technical solution disclosed herein
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications are used
Way or adaptive change follow the general principles of this disclosure and including the disclosure it is undocumented in the art known in
Common sense or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are under
The claim in face is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (10)
1. a kind of earphone interface circuit characterized by comprising
Mould group is controlled, can be used for receiving the detection signal for being directed to four-section type headset plug state, and issue and the detection signal
Corresponding switching signal；Wherein, when the plug state becomes dial-out state from insert state, the detection signal is by first
Signal becomes second signal, and the switching signal becomes fourth signal from third signal；
Logical operation mould group can receive the detection signal and the switching signal, and pass through the detection signal and switching letter
Number operation obtains control signal；
Audio coding decoding mould group is connected with the logical operation mould group, to obtain the control signal；The audio coding decoding mould
Group is also connected with the microphone of electronic equipment, for when the plug state is insert state, according to the control signal to
The microphone output audio signal, and the plug state be extraction state when, according to the control signal stop to
The microphone output audio signal.
2. earphone interface circuit according to claim 1, which is characterized in that further include:
TYPE-C connector by interconnecting device and the four-section type headset fittings, and issues the detection signal.
3. earphone interface circuit according to claim 1, which is characterized in that further include:
Four-section type headset seat, and four-section type headset fittings, and issue the detection signal.
4. earphone interface circuit according to claim 1, which is characterized in that the logical operation mould group includes or door is electric
Road, the first input end of the OR circuit is for receiving the detection signal, the second input terminal of the OR circuit and institute
Control mould group connection is stated to obtain the switching signal.
5. earphone interface circuit according to claim 4, which is characterized in that the logical operation mould group further includes and door is electric
At least one road, not circuit.
6. earphone interface circuit according to claim 4, which is characterized in that the second signal includes with high level signal
The square-wave signal of beginning, the control signal includes high level signal.
7. earphone interface circuit according to claim 1, which is characterized in that further include:
Audio/data switching switch, is connected to the control mould group, to obtain the switching signal, makes the earphone interface electricity
Road switches between the voice-frequency channel and data path.
8. earphone interface circuit according to claim 2, which is characterized in that further include:
Ground connection mould group is connected to when the four-section type headset connector is in insert state with the TYPE-C connector, so that institute
Stating the first signal is low level signal.
9. a kind of audio mould group, which is characterized in that including such as described in any item earphone interface circuits of claim 1-8.
10. a kind of electronic equipment characterized by comprising
Such as the described in any item earphone interface circuits of claim 1-8；
Or audio mould group as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517585.8A CN109218871B (en) | 2017-06-29 | 2017-06-29 | Earphone interface circuit, audio module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517585.8A CN109218871B (en) | 2017-06-29 | 2017-06-29 | Earphone interface circuit, audio module and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN109218871A true CN109218871A (en) | 2019-01-15 |
| CN109218871B CN109218871B (en) | 2020-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517585.8A Active CN109218871B (en) | 2017-06-29 | 2017-06-29 | Earphone interface circuit, audio module and electronic equipment |
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| Country | Link |
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| CN (1) | CN109218871B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116962953A (en) * | 2023-09-21 | 2023-10-27 | 荣耀终端有限公司 | Equipment connection detection circuit, audio channel switching method and electronic equipment |
| CN117278904A (en) * | 2023-11-03 | 2023-12-22 | 荣耀终端有限公司 | Earphone control circuit, earphone control method and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414984A (en) * | 2013-07-25 | 2013-11-27 | 苏州三星电子电脑有限公司 | System for eliminating explosion sound of earphones |
| CN104683915A (en) * | 2013-11-28 | 2015-06-03 | 展讯通信（上海）有限公司 | Electronic equipment and earphone detection circuit, method and device |
| JP2016123041A (en) * | 2014-12-25 | 2016-07-07 | 京セラ株式会社 | Electronic apparatus |
| CN105792069A (en) * | 2014-12-26 | 2016-07-20 | 联芯科技有限公司 | Headset base interface circuit |
| CN106231491A (en) * | 2016-08-01 | 2016-12-14 | 深圳市福智软件技术有限公司 | The method of power down POP sound is extracted in a kind of elimination |
| CN106559724A (en) * | 2015-09-30 | 2017-04-05 | 展讯通信（上海）有限公司 | Eliminate the circuit and method of headset plugging noise |
| CN106792343A (en) * | 2015-11-19 | 2017-05-31 | 展讯通信（上海）有限公司 | A kind of head circuit and electronic equipment |
-
2017
- 2017-06-29 CN CN201710517585.8A patent/CN109218871B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414984A (en) * | 2013-07-25 | 2013-11-27 | 苏州三星电子电脑有限公司 | System for eliminating explosion sound of earphones |
| CN104683915A (en) * | 2013-11-28 | 2015-06-03 | 展讯通信（上海）有限公司 | Electronic equipment and earphone detection circuit, method and device |
| JP2016123041A (en) * | 2014-12-25 | 2016-07-07 | 京セラ株式会社 | Electronic apparatus |
| CN105792069A (en) * | 2014-12-26 | 2016-07-20 | 联芯科技有限公司 | Headset base interface circuit |
| CN106559724A (en) * | 2015-09-30 | 2017-04-05 | 展讯通信（上海）有限公司 | Eliminate the circuit and method of headset plugging noise |
| CN106792343A (en) * | 2015-11-19 | 2017-05-31 | 展讯通信（上海）有限公司 | A kind of head circuit and electronic equipment |
| CN106231491A (en) * | 2016-08-01 | 2016-12-14 | 深圳市福智软件技术有限公司 | The method of power down POP sound is extracted in a kind of elimination |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116962953A (en) * | 2023-09-21 | 2023-10-27 | 荣耀终端有限公司 | Equipment connection detection circuit, audio channel switching method and electronic equipment |
| CN116962953B (en) * | 2023-09-21 | 2024-07-26 | 荣耀终端有限公司 | Equipment connection detection circuit, audio channel switching method and electronic equipment |
| CN117278904A (en) * | 2023-11-03 | 2023-12-22 | 荣耀终端有限公司 | Earphone control circuit, earphone control method and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109218871B (en) | 2020-10-16 |
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