CN104093114B - A kind of detection means of earphone keystroke, detecting system and detection method - Google Patents
A kind of detection means of earphone keystroke, detecting system and detection method Download PDFInfo
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- CN104093114B CN104093114B CN201410349306.8A CN201410349306A CN104093114B CN 104093114 B CN104093114 B CN 104093114B CN 201410349306 A CN201410349306 A CN 201410349306A CN 104093114 B CN104093114 B CN 104093114B
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Abstract
The invention discloses a kind of detection means of earphone keystroke, detecting system and detection method, detection means includes earphone socket, division module and CPU, the input connection power end of division module, the M pin of the output end connection earphone socket of division module, CPU Mike detect pin and CPU detection pin, the R pin connection CPU of earphone socket R channel detection pin, the L pin connection CPU of earphone socket L channel detection pin, the GND pin connection CPU of earphone socket grounding leg, CPU grounding leg ground connection.Earphone insert when by the detection voltage on the M pin of test earphone socket and judge it is described detection voltage whether be low level, if it is not, then storing the detection voltage；If so, the detection voltage for then judging to have stored meets that execution is answered during preparatory condition or on-hook operates, it is unsatisfactory for preparatory condition and does not operate then；Avoiding the insertion of three-wire type earphone causes the maloperation of auto-pickup or on-hook, mobile terminal is performed correctly response.
Description
Technical field
The present invention relates to mobile terminal application field, more particularly to a kind of detection means of earphone keystroke, detection system
System and detection method.
Background technology
At present, mobile phone has been increasingly becoming the required electronic product of people's Working Life.Earphone, the key fitment as mobile phone
One of, it is necessary to which user's request could be met by developing together with mobile phone technique.In order to meet good call tone quality, earphone often carries
Mike and answer/on-hook button.Button detection of most mobile phones to earphone is all the electricity by test earphone Mike both ends
Press to realize.
As shown in figure 1, it is the button detects schematic diagram of existing mobile phone standard configuration earphone.When the four-wire type earphone of mobile phone standard configuration
After insertion, the CPU of mobile phone Mike detects the pin MIC and grounding leg GND microphones with headset plug 10 respectively（M）And earth terminal
（G）Connection, CPU detection pin D connection division modules and the microphone of headset plug 10（M）.Due to the Mike of headset plug 10
Wind（M）, earth terminal（G）Earphone Mike mic both ends are connected respectively.Detection pin D passes through microphone（M）With earphone Mike's mic phases
Even, the voltage on detection pin D is the microphone of the earphone of high level（M）On voltage.When the answering of earphone/on-hook button by by
When lower, earphone Mike mic is switched on and off S short circuits, and the level on detection pin D, which is pulled low, to be changed into after 0, CPU reads 0V voltages, it is believed that
There is button to press, execution is answered accordingly or on-hook operation.
But when using in general MP3 standard configuration earphones, because it is not provided with microphone（M）If there is incoming call or conversing
When insert earphone, maloperation often occurs.As shown in Fig. 2 MP3 earphone is the three-wire type earphone without earphone Mike mic, its
Only L channel（L）, R channel（R）And earth terminal（G）This 3 pins.If mobile phone has incoming call or inserted when conversing such
During earphone, mobile phone CPU Mike detects the earth terminal that pin MIC and grounding leg GND is all connected with headset plug 20（G）, i.e. Mike's inspection
Survey pin MIC and grounding leg GND short circuits.Equivalent to the earth terminal of headset plug 20（G）On voltage be always low level（0V）, inspection
The voltage surveyed on pin D can also be changed into 0V.For CPU, will automatic decision for answer/on-hook button is pressed.Now, if
Just there is incoming call, mobile phone will automatic hand-up；If conversing, mobile phone be able to may also be hung up, and cause call or call missing,
Maloperation is answered in appearance, is affected to user.
Therefore, prior art has yet to be improved and developed.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of earphone keystroke
Detection means, detecting system and detection method, it is intended to solve existing mobile phone and insert three-wire type earphone when having incoming call or call, lead
Call or incoming call is caused to be hung up, the problem of maloperation occur.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of detection means of earphone keystroke, it includes：
Earphone socket, for inserting earphone；
Division module, for source voltage；
CPU, detection voltage on the M pin of test earphone socket simultaneously judge whether the detection voltage is low level,
If it is not, then store the detection voltage；If so, the detection voltage for then judging to have stored meet during preparatory condition perform answer or
On-hook operates, and is unsatisfactory for preparatory condition and does not operate then；
The input connection power end of the division module, M pin, the CPU of the output end connection earphone socket of division module
Mike detect pin and CPU detection pin, the R pin connection CPU of earphone socket R channel detection pin, the L of earphone socket
Pin connection CPU L channel detection pin, the GND pin connection CPU of earphone socket grounding leg, CPU grounding leg ground connection.
In the detection means of described earphone keystroke, the CPU includes：
Processing module, for the detection voltage on the M pin of test earphone socket, judge whether current detection voltage is low
Level, if then exporting enabling signal, the detection voltage is otherwise transferred to memory module；
Memory module, for storing the detection voltage；
Judge module, during for receiving the enabling signal, judge whether the detection voltage in the memory module is less than
Supply voltage and it is more than 0V, answers or on-hook operation if so, then performing, otherwise do not operate；
The processing module, judge module and memory module are sequentially connected, and the processing module connects memory module.
A kind of detecting system of earphone keystroke, it includes the detection means of described earphone keystroke and earphone；The earphone
For four-wire type earphone, including headset plug and the head circuit for transmitting Mike's signal；The headset plug and detection means
Grafting, the M pin of the microphone connection earphone socket of headset plug, the GND pin of the earth terminal connection earphone socket of headset plug, ear
The R pin of the R channel connection earphone socket of machine transplanting of rice head, the L pin of the L channel connection earphone socket of headset plug, the earphone electricity
The microphone of 1st end connection headset plug and the M pin of earphone socket on road, the 2nd end connection headset plug of the head circuit
Earth terminal and earphone socket GND pin.
A kind of detecting system of earphone keystroke, it includes the detection means of described earphone keystroke and earphone；The earphone
For three-wire type earphone, including headset plug and head circuit；The headset plug inserts detection means, the earth terminal of headset plug
The M pin and GND pin of earphone socket are connected, R channel, the L channel of headset plug connect the R pin and L pin of earphone socket, institute respectively
State the earth terminal of the 1st end connection headset plug and the M pin of earphone socket of head circuit, the 2nd end connection of the head circuit
The earth terminal of headset plug and the GND pin of earphone socket.
A kind of detection method of earphone keystroke, it includes：
A, during the earphone socket of headset plug insertion detection means, division module is to source voltage；
B, the detection voltage on the M pin of CPU test earphones socket and judge detect voltage whether be low level, if it is not,
Then store the detection voltage；If so, the detection voltage for then judging to have stored meets that execution is answered during preparatory condition or on-hook is grasped
Make, be unsatisfactory for preparatory condition and do not operate then.
In the detection method of described earphone keystroke, the step B is specifically included：
B1, processing module test earphone socket M pin on detection voltage, judge whether current detection voltage is low electricity
It is flat, if then exporting enabling signal, the detection voltage is otherwise transferred to memory module；
When B2, judge module receive the enabling signal, judge whether the detection voltage in the memory module is less than electricity
Source voltage and it is more than 0V, answers or on-hook operation if so, then performing, otherwise do not operate.
In the detection method of described earphone keystroke, M pin of the processing module every preset time test earphone socket
On detection voltage.
In the detection method of described earphone keystroke, the detection voltage of this storage is preserved in the memory module.
Compared to prior art, detection means, detecting system and the detection method of earphone keystroke provided by the invention, in ear
The machine transplanting of rice is fashionable, by the detection voltage on the M pin of test earphone socket and judges whether the detection voltage is low level, if not
It is then to store the detection voltage；Answered or on-hook if so, the detection voltage for then judging to have stored meets to perform during preparatory condition
Operation, is unsatisfactory for preparatory condition and does not operate then；Avoid causes the mistake of auto-pickup or on-hook because three-wire type earphone inserts
Operation, mobile terminal is set to perform correctly response.
Brief description of the drawings
Fig. 1 is the button detects schematic diagram of existing mobile phone standard configuration earphone.
Fig. 2 is the button detects schematic diagram of existing MP3 standard configurations earphone.
Fig. 3 is the structure chart of the detection means of earphone keystroke provided by the invention.
Fig. 4 is the schematic diagram of the detection means and the Application Example of four-wire type earphone of earphone keystroke provided by the invention.
Fig. 5 is the schematic diagram of the detection means and the Application Example of three-wire type earphone of earphone keystroke provided by the invention.
Fig. 6 is the detection method flow chart of earphone keystroke provided by the invention.
Embodiment
The present invention provides a kind of detection means of earphone keystroke, detecting system and detection method, for make the purpose of the present invention,
Technical scheme and advantage are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should
Understand, the specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
The present invention increases the corresponding function module to change detection method of the mobile terminal to earphone, with true in existing CPU
When protecting different types of earphone insertion, mobile terminal can make correct response to the function button on earphone.Refer to figure
3, the detection means of the earphone keystroke includes earphone socket 100, division module 200 and CPU 300, the division module 200
Input connection power end, Mike's detection of the output end connection M pin of earphone socket 100, CPU 300 of division module 200
Pin M0 and CPU 300 detection pin D0, the R pin connection CPU 300 of the earphone socket 100 R channel detection pin R0, earphone
The L pin connection CPU 300 of socket 100 L channel detection pin L0, the GND pin connection CPU 300 of earphone socket 100 grounding leg
G0, CPU 300 grounding leg G0 ground connection.
The earphone socket 100 is used to insert earphone, and division module 200 is used for supply voltage Vs partial pressures.CPU 300 is examined
Survey earphone socket 100 M pin on detection voltage and judge it is described detection voltage whether be low level, if it is not, then storing institute
State detection voltage；If so, the detection voltage for then judging to have stored meets that execution is answered during preparatory condition or on-hook operates, it is unsatisfactory for
Preparatory condition does not operate then.
Wherein, the preparatory condition is that detection voltage need to be less than supply voltage and be more than 0V.If detection voltage is more than or waited
In supply voltage, then it represents that be unsatisfactory for preparatory condition.The division module 200 can use electric resistance partial pressure mode, i.e., described partial pressure
Module 200 includes a resistance, one end of resistance（That is the input of division module 200）Connect power end, the other end of resistance
（The output end of division module 200）Connect the M pin of earphone socket 100, CPU 300 Mike detects pin M0 and CPU 300 inspection
Survey pin D0.When it is implemented, the division module 200 there can also be a variety of circuits, this is not construed as limiting herein.
The CPU 300 includes processing module 301, memory module 302 and judge module 303, the processing module 301,
Judge module 303 and memory module 302 are sequentially connected, and the processing module 301 connects memory module 302, the processing module
301 connection CPU detection pin D0.Detection voltage on the M pin of the test earphone socket 100 of processing module 301, judges current inspection
Survey whether voltage is low level, if then exporting enabling signal, otherwise the detection voltage Vd is exported and deposited to memory module 302
Storage.If judge module 303 receives the enabling signal, judge whether the detection voltage in the memory module 302 is less than electricity
Source voltage Vs and it is more than 0V, if (i.e. 0<VVd<VVs), then execution is answered or on-hook operates, and is not otherwise operated.
Please refer to Fig. 4 and Fig. 5, the present embodiment also provides a kind of detecting system of earphone keystroke, and it includes above-mentioned
The detection means and earphone of earphone keystroke.The earphone includes three-wire type earphone and four-wire type earphone.By taking four-wire type earphone as an example
（Refer to Fig. 4）, the earphone includes headset plug P and the head circuit 400 for transmitting Mike's signal；The headset plug P
Insert in the earphone socket 100 of detection means, headset plug P microphone（M）, earth terminal（G）, R channel（R）, L channel
（L）M pin, GND pin, R pin and the L pin of earphone socket 100, the 1st end of the head circuit 400 are connected respectively（Equivalent to earphone
Mike mic positive pole mic+）Connect headset plug P microphone（M）With the M pin of earphone socket 100, the head circuit 400
The 2nd end（Equivalent to earphone Mike mic negative pole mic-）Connect headset plug P earth terminal（G）With earphone socket 100
GND pin.
The three-wire type earphone and the annexation of the detection means of above-mentioned earphone keystroke please refer to Fig. 5, three line
Formula earphone includes headset plug P1 and head circuit 500；In the earphone socket 100 of the headset plug P1 insertions detection means,
Headset plug P1 earth terminal（G）Connect the M pin and GND pin of earphone socket 100, headset plug P1 R channel（R）, L channel
（L）The R pin and L pin of earphone socket 100, the 1st end connection headset plug P1 of the head circuit 500 earth terminal are connected respectively
（G）With the M pin of earphone socket 100, the 2nd end connection headset plug P1 of the head circuit 500 earth terminal（G）Inserted with earphone
The GND pin of seat 100.
It is to be appreciated that because without microphone, the head circuit 500 shown in Fig. 5 is equivalent to one in three-wire type earphone
Root wire.So when three-wire type earphone inserts, make the M pin and GND pin short circuits of earphone socket 100.The inside of head circuit 500
Also other circuit structures, due to unrelated with the present embodiment, it is not described in detail here.
Based on the detecting system of above-mentioned earphone keystroke, the present invention also provides a kind of detection method of earphone keystroke, such as Fig. 6 institutes
Show, the detection method of the earphone keystroke includes：
When S100, headset plug insert the earphone socket of detection means, division module is to source voltage；
Detection voltage on the M pin of S200, CPU test earphone socket simultaneously judges to detect whether voltage is low level, if not
It is then to store the detection voltage；Answered or on-hook if so, the detection voltage for then judging to have stored meets to perform during preparatory condition
Operation, is unsatisfactory for preparatory condition and does not operate then.
Wherein, the step S200 is specifically included：
Step 1, processing module test earphone socket M pin on detection voltage, judge current detection voltage whether be
Low level, if then exporting enabling signal, the detection voltage is otherwise transferred to memory module；
When step 2, judge module receive the enabling signal, judge whether the detection voltage in the memory module is less than
Supply voltage and it is more than 0V, answers or on-hook operation if so, then performing, otherwise do not operate.
In order to reduce CPU system operation, resource is saved, in the specific implementation, the processing module can be every default
Detection voltage on the M pin of earphone socket of time detecting, such as detection in every 3 seconds are once.
Based on earphone in real work, the voltage of its microphone output is usually kept essentially constant, then detects voltage
When Vd is also kept essentially constant, the value for the detection voltage Vd that repeated detection arrives is equal./ on-hook is answered on four-wire type earphone
Detecting voltage Vd when button is pressed just can be down for low level（About 0V）, or can also be incited somebody to action during the insertion of three-wire type earphone because of short circuit
Voltage Vd is detected down for 0V.Cause memory space unrestrained in order to avoid memory module storage detection voltage Vd data volume is larger
Take, in the present embodiment, detection voltage Vd only preserves the value of this storage using coverage mode when storing.
Assuming that the detection voltage of storage is Vd1 for the first time, the detection voltage of second of storage is Vd2.Under current time,
Vd2 is equivalent to the value that this is stored, Vd2 coverings Vd1.Third time storage detection voltage（Vd3）When, Vd3 covers Vd2 value,
Now, Vd3 is equivalent to the value that this is stored；By that analogy, a value is only retained in memory module all the time.
When whether the detection voltage that judge module needs to judge in the memory module is less than supply voltage, storage is called
The magnitude of voltage preserved in module.
Referring to Fig. 4 and Fig. 5, the present embodiment by taking four-wire type earphone and three-wire type earphone as an example, illustrates respectively respectively
The operation principle of the detecting system of above-mentioned earphone keystroke.
First, four-wire type earphone, referring to Fig. 4
When four-wire type earphone inserts earphone socket 100, and answer/on-hook button is when pressing.Headset plug P microphone
（M）, earth terminal（G）, R channel（R）, L channel（L）M pin, GND pin, R pin and the L pin of earphone socket 100 are connected respectively.Then
The detection voltage of CPU 300 detection pin D0 detections is the voltage at earphone Mike mic both ends.Because earphone Mike mic is with dividing
Die block 200 is connected, thus the voltage at earphone Mike mic both ends should between 0 and supply voltage Vs, i.e., 0<VVd<VVs.Processing
Non-zero V detection voltage Vd is transferred to memory module 302 and stored by module 301, storage value VVd.After being spaced preset time
Continue next round detection, if now still being pressed without button, detection voltage Vd is still non-zero V VVd, memory module 302 deposits again
Store up VVd, after being spaced preset time, continue next round detection, so circulation.
When answer/on-hook button be pressed when, switch S closures, by earphone Mike mic short circuits, make headset plug P M pin
With G pin short circuits, voltage Vd is down for 0V for detection；Processing module 301 exports enabling signal（That is the detection voltage Vd of 0V）To judgement
Module 303.
Judge module 303 receives enabling signal, reads the detection voltage Vd stored in memory module 302 pressure value VVd,
Now meet 0<VVd<VVs, therefore judge to answer/on-hook button is pressed, execution is answered and on-hook function accordingly.
2nd, three-wire type earphone, referring to Fig. 5
When three-wire type earphone is not inserted into, because detection pin D0 and earphone socket 100 M pin are off, detect
Impedance is infinitely great at pin D0, therefore detects voltage Vd and be equal to supply voltage Vs, i.e. VVd= VVs.Processing module will detect voltage Vd and pass
Transport in memory module 302 and store, storage value VVs.Continue next round detection after being spaced preset time, if being now still not inserted into
Earphone, then voltage Vd is detected still equal to supply voltage Vs, memory module 302 stores detection voltage Vd again, continues next round inspection
Survey, so circulation.
After three-wire type earphone inserts, headset plug P1 R channel（R）, L channel（L）Earphone socket 100 is connected respectively
R pin, L pin, headset plug P1 earth terminal（G）The M pin and GND pin of earphone socket 100 are connected simultaneously.So as to cause earphone to be inserted
The M pin and GND pin short circuits of seat 100, detection voltage are pulled low as 0V；Processing module 301 exports enabling signal to judge module
303。
After judge module 303 receives 0V enabling signal, the storage value V of memory module 302 is readVd, due to VVd=
VVs, it is unsatisfactory for 0< VVd < VVsCondition, therefore do not perform operation, led so as to avoid because three-wire type earphone inserts
Cause the maloperation of auto-pickup or on-hook.
Mobile terminal provided by the invention includes and is not limited to mobile phone, tablet personal computer.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (6)
- A kind of 1. detection means of earphone keystroke, it is characterised in that including：Earphone socket, for inserting earphone；Division module, for source voltage；CPU, detection voltage on the M pin of test earphone socket simultaneously judges whether the detection voltage is low level, if not It is then to store the detection voltage；Answered or on-hook if so, the detection voltage for then judging to have stored meets to perform during preparatory condition Operation, is unsatisfactory for preparatory condition and does not operate then；The input connection power end of the division module, the M pin of the output end connection earphone socket of division module, CPU wheat The detection pin of gram detection pin and CPU, the R pin connection CPU of earphone socket R channel detection pin, the L pin of earphone socket connect Connect CPU L channel detection pin, the GND pin connection CPU of earphone socket grounding leg, CPU grounding leg ground connection；The CPU includes：Processing module, for the detection voltage on the M pin of test earphone socket, judge whether current detection voltage is low electricity It is flat, if then exporting enabling signal, the detection voltage is otherwise transferred to memory module；Memory module, for storing the detection voltage；Judge module, during for receiving the enabling signal, judge whether the detection voltage in the memory module is less than power supply Voltage and it is more than 0V, answers or on-hook operation if so, then performing, otherwise do not operate；The processing module, judge module and memory module are sequentially connected, and the processing module connects memory module；When four-wire type earphone inserts earphone socket, detection voltage is between 0 and supply voltage；When answer/on-hook button by by When lower, now meet that the detection voltage of storage is less than supply voltage and is more than 0V；When three-wire type earphone is not inserted into, detection voltage is equal to supply voltage；After three-wire type earphone inserts, the detection electricity of storage Pressure is unsatisfactory for being less than supply voltage and the condition more than 0V, does not perform operation, and avoid causes because three-wire type earphone inserts Auto-pickup or the maloperation of on-hook；When ensuring different types of earphone insertion, correct response can be made to the function button on earphone.
- A kind of 2. detecting system of earphone keystroke, it is characterised in that the detection dress including earphone keystroke as claimed in claim 1 Put and earphone；The earphone is four-wire type earphone, including headset plug and the head circuit for transmitting Mike's signal；The ear Machine transplanting of rice head and detection means grafting, the M pin of the microphone connection earphone socket of headset plug, the earth terminal engaging lug of headset plug The GND pin of machine transplanting of rice seat, the R pin of the R channel connection earphone socket of headset plug, the L channel connection earphone socket of headset plug L pin, the microphone of the 1st end connection headset plug and the M pin of earphone socket of the head circuit, the of the head circuit The earth terminal of 2 ends connection headset plug and the GND pin of earphone socket.
- A kind of 3. detecting system of earphone keystroke, it is characterised in that the detection dress including earphone keystroke as claimed in claim 1 Put and earphone；The earphone is three-wire type earphone, including headset plug and head circuit；The headset plug insertion detection dress Put, the M pin and GND pin of the earth terminal connection earphone socket of headset plug, R channel, the L channel difference engaging lug of headset plug The R pin and L pin of machine transplanting of rice seat, the earth terminal of the 1st end connection headset plug and the M pin of earphone socket of the head circuit are described The earth terminal of the 2nd end connection headset plug and the GND pin of earphone socket of head circuit.
- A kind of 4. detection method of earphone keystroke, it is characterised in that including：A, during the earphone socket of headset plug insertion detection means, division module is to source voltage；B, the detection voltage on the M pin of CPU test earphones socket and judge detect voltage whether be low level, if it is not, then depositing Store up the detection voltage；If so, the detection voltage for then judging to have stored meets that execution is answered during preparatory condition or on-hook operates, no Meet that preparatory condition does not operate then；The step B is specifically included：B1, processing module test earphone socket M pin on detection voltage, judge whether current detection voltage is low level, If then exporting enabling signal, the detection voltage is otherwise transferred to memory module；When B2, judge module receive the enabling signal, judge whether the detection voltage in the memory module is less than power supply electricity Press and be more than 0V, if so, then execution is answered or on-hook operates, otherwise do not operate；When four-wire type earphone inserts earphone socket, detection voltage is between 0 and supply voltage；When answer/on-hook button by by When lower, now meet that the detection voltage of storage is less than supply voltage and is more than 0V；When three-wire type earphone is not inserted into, detection voltage is equal to supply voltage；After three-wire type earphone inserts, the detection electricity of storage Pressure is unsatisfactory for being less than supply voltage and the condition more than 0V, does not perform operation, and avoid causes because three-wire type earphone inserts Auto-pickup or the maloperation of on-hook；When ensuring different types of earphone insertion, correct response can be made to the function button on earphone.
- 5. the detection method of earphone keystroke according to claim 4, it is characterised in that the processing module is when default Between test earphone socket M pin on detection voltage.
- 6. the detection method of earphone keystroke according to claim 4, it is characterised in that preserve this in the memory module The detection voltage of storage.
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| CN107005762B (en) * | 2015-04-09 | 2019-12-13 | 华为技术有限公司 | Audio connector identification method and portable electronic equipment |
| CN105430549B (en) * | 2015-12-14 | 2019-06-04 | 惠州Tcl移动通信有限公司 | A kind of device and method preventing earphone insertion maloperation |
| CN105652193B (en) * | 2015-12-31 | 2018-11-02 | 深圳Tcl数字技术有限公司 | It is adapted to detection device and method for terminal and keypad |
| CN106604164A (en) * | 2016-04-29 | 2017-04-26 | 福建先创电子有限公司 | Jitter elimination method and apparatus for key of earphone |
| CN107995372B (en) * | 2017-12-25 | 2020-04-07 | 维沃移动通信有限公司 | False touch grounding identification processing method and circuit and mobile terminal |
| CN113473315B (en) * | 2021-07-31 | 2022-06-28 | 展讯通信（上海）有限公司 | Electronic device capable of improving output performance of earphone |
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| CN102510550A (en) * | 2011-11-15 | 2012-06-20 | 深圳市中兴移动通信有限公司 | Method for distinguishing three-segment earphone and four-segment earphone on wireless terminal |
| CN102769697A (en) * | 2012-07-02 | 2012-11-07 | 惠州Tcl移动通信有限公司 | Method and system for preventing false key-pressing caused by earphone inserted into terminal device |
| CN102769810A (en) * | 2012-07-25 | 2012-11-07 | 惠州Tcl移动通信有限公司 | Mobile terminal with a calling misoperation preventive function |
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