CN102769810B - A kind of mobile terminal preventing call misoperation - Google Patents
A kind of mobile terminal preventing call misoperation Download PDFInfo
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- CN102769810B CN102769810B CN201210259044.7A CN201210259044A CN102769810B CN 102769810 B CN102769810 B CN 102769810B CN 201210259044 A CN201210259044 A CN 201210259044A CN 102769810 B CN102769810 B CN 102769810B
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Abstract
The invention discloses a kind of mobile terminal preventing call misoperation, comprise earphone socket, the microphone signal control end of the 1st pin frames connecting with headphone socket of earphone socket, 2nd pin ground connection, the right-channel signals control end of the 3rd pin frames connecting with headphone socket, the left channel signals control end of the 4th pin frames connecting with headphone socket, the interrupt signal control end of the 5th pin frames connecting with headphone socket, the 6th pin is by pull down resistor ground connection; 5th pin and the 6th pin are the switch control pin of earphone socket, and the 6th pin is provided with the metal clips of the side being positioned at the 5th pin.The present invention is by extracting at earphone, before microphone signal and earth signal short circuit, metal clips and the 5th pin disconnect and carry out control simulation switch microphone signal control end and earphone talk button induction end are disconnected, maintaining earphone talk button induction end is high level, thus earphone receiving/hang-up button can not be triggered give an order, avoid call misoperation.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of mobile terminal preventing call misoperation.
Background technology
Mobile phone, as a kind of portable mobile termianl, brings convenient, amusement to the live and work of people.Along with mobile phone is more and more universal, in order to promote the demand for experience of user and obtain large market, mobile phone is constantly towards miniaturization, ultrathin, multi-functional trend development, and its personalization level also grows in intensity.Such trend all requires integrated more function on a less volume, has higher requirement to the hardware of mobile phone and structure.
Current mobile phone adopts 3.5mm earphone mostly, because the size of the earphone socket of the 3.5mm with its adaptation is done less and less, causes the shell fragment of earth signal and microphone signal distance too close.If use earphone to converse, in the process of carrying out earphone plug, earth signal and the easy short circuit of microphone signal, microphone signal is caused to become logic low, trigger the order of earphone receiving/hang-up button, cause phone to be hung up by mistake, if when extracting earphone under holding state, the phone of last call may be transferred to.Even if earth signal and microphone signal only have the contact of short time, above-mentioned call misoperation also may be produced.At present, although the risk of call misoperation can be reduced by software process, the problem of call misoperation can not be solved completely.Meanwhile, also there is the problem of electric energy loss in the earphone socket of existing earphone and adaptation thereof when carrying out headset detection.
Refer to Fig. 1, it is existing earphone socket pinout and earphone detection circuit figure.As shown in the figure, 1st pin ground connection of earphone socket, the right-channel signals control end of the 2nd pin frames connecting with headphone socket, the interrupt signal control end of earphone socket, also connect power input VDD by pull-up resistor R1, the left channel signals control end of the 3rd pin frames connecting with headphone socket, the microphone signal control end of the 4th pin frames connecting with headphone socket.In the testing process of earphone, the input voltage of power input VDD is 2.8V, when earphone does not insert, because the interrupt signal of interrupt signal control end input is pulled up resistance R1 pull-up, keeps interrupt signal to be high level at ordinary times; When earphone inserts, right-channel signals control end is conducting to ground by the loudspeaker (not shown) that the resistance on earphone is 32 ohm, interrupt signal becomes low level from high level, this mode can add a DC component in the audio signal of earphone, tonequality is caused to decline, and pull-up resistor R1 can cause a small amount of electric leakage, cause unnecessary power consumption, the earphone socket of visible prior art designs earphone and whether inserts the stand-by time that all can shorten mobile phone.
In view of this, the invention provides a kind of mobile terminal preventing call misoperation.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of mobile terminal preventing call misoperation, when earphone is extracted, even if microphone signal and earth signal short circuit, also earphone talk button induction end can be kept to be high level, thus the order of earphone receiving/hang-up button can not be triggered, guarantee can not produce call misoperation.
In order to achieve the above object, this invention takes following technical scheme:
Prevent a mobile terminal for call misoperation, comprise earphone socket, described earphone socket comprises:
1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin and the 6th pin; The microphone signal control end of described 1st pin frames connecting with headphone socket, 2nd pin ground connection, the right-channel signals control end of the 3rd pin frames connecting with headphone socket, the left channel signals control end of the 4th pin frames connecting with headphone socket, the interrupt signal control end of the 5th pin frames connecting with headphone socket, the 6th pin is by pull down resistor ground connection;
Wherein, described 5th pin and the 6th pin are the switch control pin of earphone socket, described 6th pin is provided with metal clips, described metal clips is positioned at the side of the 5th pin, when earphone plugged earphone socket, described metal clips and the 5th pin short circuit, when earphone is extracted, described metal clips and the 5th pin disconnect.
The described mobile terminal preventing call misoperation, also comprise analog switch, the A1 end of analog switch is unsettled, the A2 of analog switch holds the microphone signal control end of frames connecting with headphone socket, the C end of analog switch connects earphone talk button induction end and the microphone signal end of mobile terminal, and the S1 of analog switch holds the interrupt signal control end of frames connecting with headphone socket.
Described prevent from conversing in the mobile terminal of misoperation, stroke when described metal clips and the 5th pin disconnect be less than the 2nd section of earphone with stroke during the 1st pin short circuit.
Described prevents from conversing in the mobile terminal of misoperation, and the C end of described analog switch also connects microphone signal bias voltage input.
Described prevent from conversing in the mobile terminal of misoperation, described metal clips and the 6th pin one-body molded.
Described prevents in the mobile terminal of call misoperation, and described earphone socket has earphone jack, and described 1st pin, the 3rd pin and the 4th pin are positioned at the side of earphone jack, and described 2nd pin, the 5th pin and the 6th pin are positioned at the opposite side of earphone jack.
Described prevents in the mobile terminal of call misoperation, and described earphone is LRGM line sequence earphone.
Described prevents in the mobile terminal of call misoperation, and described mobile terminal is mobile phone.
Compared to prior art, the mobile terminal preventing call misoperation provided by the invention, earphone socket adds the 5th pin and the 6th pin, by arranging metal clips on the 6th pin of earphone socket, this metal clips is at earphone plugged earphone socket or when extracting earphone socket, according to headset plug to the pressure condition of metal clips and the 5th pin short circuit or disconnection, export corresponding interrupt signal to control connection or the disconnection of microphone signal control end and earphone talk button induction end, when earphone is extracted, metal clips on 6th pin is not under pressure thus the 6th pin and the 5th pin is disconnected, interrupt signal is caused to become high level from low level, microphone signal control end and earphone talk button induction end are disconnected, high level is exported to microphone signal bias voltage input by the MCU unit in interrupt signal triggering mobile terminals, earphone talk button induction end is drawn high, now, even if microphone signal and earth signal short circuit, also the magnitude of voltage of earphone talk button induction end can not be affected, also the order of earphone receiving/hang-up button would not be triggered, avoid causing call misoperation, also solve the problem that software process can not reduce misoperation completely simultaneously.
Accompanying drawing explanation
Fig. 1 is existing earphone socket pinout and earphone detection circuit figure.
The end view of the plug of the earphone that Fig. 2 A prevents the mobile terminal of call misoperation adaptive by the present invention.
The vertical view of the plug of the earphone that Fig. 2 B prevents the mobile terminal of call misoperation adaptive by the present invention.
Fig. 3 is the structural representation that the present invention prevents the plug plugged earphone socket of the mobile terminal embodiment earphone of call misoperation.
Fig. 4 is the circuit diagram that the present invention prevents the mobile terminal embodiment earphone socket of call misoperation.
Fig. 5 is the circuit diagram that the present invention prevents the mobile terminal embodiment control unit of call misoperation.
Fig. 6 is that the first view in the process of earphone socket extracted by the present invention's prevent from conversing plug of mobile terminal embodiment earphone of misoperation.
Fig. 7 is that the second view in the process of earphone socket extracted by the present invention's prevent from conversing plug of mobile terminal embodiment earphone of misoperation.
Embodiment
The invention provides a kind of mobile terminal preventing call misoperation, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 2 A, it prevents the end view of the plug construction of the earphone of the mobile terminal adaptation of call misoperation for the present invention.As shown in the figure, the 1st section 104 of the plug of earphone is MIC(microphone), the 2nd section 103 of the plug of earphone is GND(ground), the 3rd section 102 of the plug of earphone is R(R channel), the 4th section 101 of the plug of earphone is L(L channel), 105 in Fig. 2 is insulation ring set, 106 is the handle portion of headset plug.Wherein, the 1st section 104, the 2nd sections the 103,3rd section 102 and the 4th sections 101 of plug of described mobile phone are conductive ring.Fig. 2 B is the vertical view of the plug construction of above-mentioned earphone, and its structure is corresponding with the structure of Fig. 2 A, and wherein, insulation ring set 105 comprises the first insulation ring set 1051, second insulation ring set 1052 and the 3rd insulation ring set 1053.
In the present embodiment, the plug of the earphone shown in Fig. 2 B, for mobile phone, inserts in earphone socket provided by the invention by described mobile terminal, namely forms structure as shown in Figure 3.Referring to Fig. 3, Fig. 4, as shown in Figure 3 and Figure 4, earphone socket 20 comprises: the 1st pin pin1, the 2nd pin pin2, the 3rd pin pin3, the 4th pin pin4, the 5th pin pin5 and the 6th pin pin6; The microphone signal control end of described 1st pin pin1 frames connecting with headphone socket 20,2nd pin pin2 ground connection, the right-channel signals control end of the 3rd pin pin3 frames connecting with headphone socket 20, the left channel signals control end of the 4th pin pin4 frames connecting with headphone socket 20, the interrupt signal control end of the 5th pin pin5 frames connecting with headphone socket 20, the 6th pin pin6 is by pull down resistor R2 ground connection.
Wherein, microphone signal control end input, export be microphone signal; Interrupt signal control end input, export be interrupt signal, described interrupt signal by pull-up resistor (not shown) connect power supply, maintenance initial condition is high level.
In the present embodiment, described 5th pin pin5 and the 6th pin pin6 is the switch control pin of earphone socket 20, and described 6th pin pin6 is provided with metal clips 107(as shown in Figure 3), this metal clips 107 and the 6th pin pin6 one-body molded.Earphone socket 20 has earphone jack (not marking in figure), described 1st pin pin1, the 3rd pin pin3 and the 4th pin pin4 are positioned at the side of earphone jack, and described 2nd pin pin2, the 5th pin pin5 and the 6th pin pin6 are positioned at the opposite side of earphone jack.Described metal clips 107 is positioned at the side of the 5th pin pin5, when the plug 10 of earphone passes through in earphone jack plugged earphone socket, described metal clips 107 and the 5th pin pin5 short circuit, make the 5th pin pin5 and the 6th pin pin6 conducting triggered interrupts, when earphone is extracted, described metal clips and the 5th pin pin5 disconnect.
During concrete enforcement, the interrupt signal of described interrupt signal control end input is high level, when the 6th pin pin6 is by metal clips 107 and the 5th pin pin5 short circuit, the high level of the interrupt signal that the 5th pin pin5 can be connected drags down as low level by pull down resistor R2; When the 6th pin pin6 metal clips the 5th pin pin5 disconnect and time, interrupt signal can revert to high level from low level.
Please continue to refer to Fig. 2 B and Fig. 3, when earphone is extracted, the stroke of earphone is L2, and when namely earphone tip disconnects with the metal clips 107 on the 6th pin pin6, metal clips 107 and the 5th pin pin5 could disconnect completely.When the 2nd section 103 of earphone and the 1st pin pin1 just short circuit time, the stroke of earphone is L1.Stroke L2 when the present embodiment makes metal clips 107 and the 5th pin pin5 disconnect be less than the 2nd section of earphone with stroke L1 during the 1st pin short circuit, thus can well prevent mobile terminal call misoperation.
In the embodiment of the present invention, described earphone is LRGM line sequence earphone, i.e. the plug 10 of earphone is from left to right followed successively by L(L channel), R(R channel), GND(ground), MIC(microphone).Therefore, the present invention need select LRGM line sequence earphone could be adaptive with the earphone socket of mobile terminal of mobile telephone, reaches the effect of the misoperation that prevents from conversing.Certainly, the present invention can also change the 1st pin of earphone socket and the circuit connecting mode of the 2nd pin, even if the 1st pin ground connection of earphone socket, the 2nd pin connects microphone signal control end, makes its adaptive LRMG line sequence earphone.
See also Fig. 5, the mobile terminal of call misoperation that prevents provided by the invention also comprises analog switch KW, the A1 end of analog switch KW is unsettled, the A2 of analog switch KW holds the microphone signal control end of frames connecting with headphone socket 20, the C of analog switch KW holds frames connecting with headphone talk button induction end and microphone signal end, the S1 of analog switch KW holds the interrupt signal control end of frames connecting with headphone socket 20, the C end of analog switch KW also connects microphone signal bias voltage input, for microphone signal end provides bias voltage.Wherein, described microphone signal end is divided into positive microphone signal end and negative microphone signal end
,described earphone talk button induction end is used for input, exports earphone talk button induced signal, and described microphone signal control end is used for input, exports microphone signal.
In the present embodiment, the working method of described analog switch KW is: the interrupt signal exported when interrupt signal control end is high level, and when namely S1 end is for high level, C end is held with A1 and is connected; When interrupt signal is low level, C end is held with A2 and is connected.When interrupt signal becomes low level from high level, or when becoming high level from low level, the MCU unit (not marking in figure) that all can control mobile terminal, from microphone signal bias voltage input input high level, is powered to the positive microphone signal end in Fig. 5 and earphone talk button induction end.
Earphone receiving/hang-up button realize principle, normally ADC poll detect change in voltage, namely Test earphone talk button induction end level change.When earphone receiving/hang-up button is not pressed, earphone talk button induction end is detected as high level, when earphone receiving/hang-up button is pressed, due to microphone signal and earth signal short circuit, earphone talk button induction end is detected as low level, after button is upspring, earphone talk button induction end becomes height again, completes button and detects.So when earphone talk button induced signal is high level, do not trigger the order of earphone receiving/hang-up button, now earphone receiving/hang-up button is thought and is not pressed, and can not dial or hang up the telephone; When earphone talk button induction end is low level, trigger the order of earphone receiving/hang-up button, earphone receiving/hang-up button is thought and is pressed, and carries out the operation of dialing or hanging up the telephone.The differentiation answering and hang up function is realized by the marker bit reversion of software.
Be mobile phone below with mobile terminal be Application Example, composition graphs 3 to Fig. 7 is described in detail to the present invention's prevent from conversing operation principle of mobile terminal of misoperation:
When earphone plug 10 completely plugged earphone socket 20 time, the extruding that metal clips on 6th pin pin6 is subject to plug 10 tip contacts with the 5th pin pin5, and the interrupt signal that the 5th pin pin5 connects is drawn as low level from high level by the pull down resistor R2 now on the 6th pin pin6.This low level inputs to the S1 end of analog switch KW, the C end of control simulation K switch W is held with A2 and is connected, microphone signal control end is connected with earphone talk button induced signal end, simultaneously, being converted to low level interrupt signal from high level is input to MCU unit, control microphone signal biased electrical pressure side output signal to power to the positive Mike's signal end in Fig. 5, making microphone signal and earphone talk button induction end is simultaneously high level, the order of earphone receiving/hang-up button would not be triggered like this, ongoing call is maintained when ensureing that earphone inserts, and phone can not be hung up by mistake.
The process of extracting earphone socket 20 at the plug 10 of earphone comprises two states:
1, headset plug 10 does not have completely to extract from earphone socket 20, and the 2nd section 103 of the 1st pin pin1 and headset plug 10 contact before, as shown in Figure 6.
In comparison diagram 3 and Fig. 6, the position of the 1st pin pin1 of earphone socket 20 can be found out, headset plug 10 is being extracted outward, when the edge of the 1st pin pin1 is just in time contacted with the first edge insulating ring set 1051, because stroke L2 is less than stroke L1, therefore the metal clips 107 on the 6th pin pin6 is no longer subject to the extruding at headset plug 10 tip, disconnects with the 5th pin pin5.The interrupt signal that now the 5th pin pin5 connects becomes high level by low level, the S1 end of this high level input analog switch KW, the C end of control simulation K switch W is held with A1 and is connected, earphone talk button induction end in microphone signal control end and earphone socket circuit is disconnected, and earphone talk button induction end connects unsettled A1 end.Meanwhile, the change in voltage of this interrupt signal controls microphone signal bias voltage input and powers to positive microphone signal end, makes earphone talk button induction end become high level, then can not trigger earphone receiving/hang-up button and give an order.
2, headset plug 10 does not have completely to extract from earphone socket 20, and the 2nd section of the 1st pin pin1 and headset plug 10 contacts, as shown in Figure 7.
In comparison diagram 3 and Fig. 7, the position of the 1st pin pin1 of earphone socket 20 can be found out, 1st pin pin1 contacts completely with the 2nd section 103 and second ring set 1052 that insulate of headset plug 20, cause the microphone signal be connected with the 1st pin pin1 by earth signal short circuit, namely microphone signal control end becomes low level with ground short circuit.Because the 6th pin pin6 and the 5th pin pin5 just disconnected before microphone signal step-down, interrupt signal is made to keep high level, the state that maintenance microphone signal control end and earphone talk button induction end disconnect, now, low level microphone signal would not transfer to earphone talk button induction end, earphone talk button induction end can not trigger the order of earphone receiving/hang-up button, also would not again dial number, and guarantee can not produce call misoperation.
In sum, the mobile terminal preventing call misoperation provided by the invention, insert constantly at earphone, 6th pin is by metal clips and the 5th pin short circuit, the interrupt signal of the interrupt signal control end of the earphone socket be connected with the 5th pin is pulled into low level by under high level, by analog switch, microphone signal control end is connected with earphone talk button induction end, simultaneously by the MCU unit of interrupt signal triggering mobile terminals, control to export high level from microphone signal bias voltage input, making microphone signal control end and earphone talk button induction end is simultaneously high level, the order of earphone receiving/hang-up button can not be triggered, when earphone is extracted, metal clips and the 5th pin of the 6th pin disconnect, interrupt signal becomes high level by low level, because stroke L2 is less than stroke L1, before microphone signal and earth signal short circuit, analog switch first cuts off the connection of microphone signal control end and earphone talk button induction end, thus ensure the magnitude of voltage that can not affect earphone talk button induction end, maintain high level, also would not trigger the order of earphone receiving/hang-up button, cause call misoperation.Meanwhile, use earphone socket of the present invention to achieve headset plugging and detect interrupt signal, the adverse effect that audio signal produces can be added in by avoidance breakout signal.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection range that all should belong to the claim appended by the present invention.
Claims (7)
1. prevent a mobile terminal for call misoperation, comprise earphone socket, it is characterized in that, described earphone socket comprises:
1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin and the 6th pin; The microphone signal control end of described 1st pin frames connecting with headphone socket, 2nd pin ground connection, the right-channel signals control end of the 3rd pin frames connecting with headphone socket, the left channel signals control end of the 4th pin frames connecting with headphone socket, the interrupt signal control end of the 5th pin frames connecting with headphone socket, the 6th pin is by pull down resistor ground connection;
Wherein, described 5th pin and the 6th pin are the switch control pin of earphone socket, described 6th pin is provided with metal clips, described metal clips is positioned at the side of the 5th pin, when earphone plugged earphone socket, described metal clips and the 5th pin short circuit, when earphone is extracted, described metal clips and the 5th pin disconnect;
Stroke when described metal clips and the 5th pin disconnect be less than the 2nd section of earphone with stroke during the 1st pin short circuit;
When earphone inserts, 6th pin is by metal clips and the 5th pin short circuit, the interrupt signal of the interrupt signal control end of the earphone socket be connected with the 5th pin is pulled into low level by under high level, by analog switch, microphone signal control end is connected with earphone talk button induction end, simultaneously by the MCU unit of interrupt signal triggering mobile terminals, control to export high level from microphone signal bias voltage input, make microphone signal control end and earphone talk button induction end to be simultaneously high level, the order of earphone receiving/hang-up button can not be triggered; When earphone is extracted, metal clips and the 5th pin of the 6th pin disconnect, interrupt signal becomes high level by low level, due to stroke when metal clips and the 5th pin disconnect be less than the 2nd section of earphone with stroke during the 1st pin short circuit, before microphone signal and earth signal short circuit, analog switch first cuts off the connection of microphone signal control end and earphone talk button induction end, thus ensure the magnitude of voltage that can not affect earphone talk button induction end, maintain high level, the order of earphone receiving/hang-up button can not be triggered.
2. the mobile terminal preventing call misoperation according to claim 1, it is characterized in that, also comprise analog switch, the A1 end of analog switch is unsettled, the A2 of analog switch holds the microphone signal control end of frames connecting with headphone socket, the C end of analog switch connects earphone talk button induction end and the microphone signal end of mobile terminal, and the S1 of analog switch holds the interrupt signal control end of frames connecting with headphone socket.
3. the mobile terminal preventing call misoperation according to claim 2, is characterized in that, the C end of described analog switch also connects microphone signal bias voltage input.
4. according to claim 1ly prevent the mobile terminal of misoperation conversed, it is characterized in that, described metal clips and the 6th pin one-body molded.
5. the mobile terminal preventing call misoperation according to claim 1, it is characterized in that, described earphone socket has earphone jack, described 1st pin, the 3rd pin and the 4th pin are positioned at the side of earphone jack, and described 2nd pin, the 5th pin and the 6th pin are positioned at the opposite side of earphone jack.
6. the mobile terminal preventing call misoperation according to claim 1 to 5 any one, it is characterized in that, described earphone is LRGM line sequence earphone.
7. the mobile terminal preventing call misoperation according to claim 1 to 5 any one, it is characterized in that, described mobile terminal is mobile phone.
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| CN201210259044.7A CN102769810B (en) | 2012-07-25 | 2012-07-25 | A kind of mobile terminal preventing call misoperation |
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| CN201210259044.7A CN102769810B (en) | 2012-07-25 | 2012-07-25 | A kind of mobile terminal preventing call misoperation |
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| CN102769810A CN102769810A (en) | 2012-11-07 |
| CN102769810B true CN102769810B (en) | 2016-01-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103022831A (en) * | 2012-12-30 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Earphone socket, earphone noise reduction device and earphone socket implementation method |
| JP6183056B2 (en) * | 2013-08-22 | 2017-08-23 | ヤマハ株式会社 | Plug connection device |
| CN104093114B (en) * | 2014-07-22 | 2018-03-16 | Tcl通讯（宁波）有限公司 | A kind of detection means of earphone keystroke, detecting system and detection method |
| KR102161151B1 (en) | 2014-07-23 | 2020-09-29 | 삼성전자주식회사 | Earset and operation method of earset |
| CN105792069B (en) * | 2014-12-26 | 2019-04-16 | 联芯科技有限公司 | A kind of earphone base interface circuit |
| CN107911774A (en) * | 2017-11-15 | 2018-04-13 | 宁波麦博韦尔移动电话有限公司 | A kind of detection method of earphone call |
| 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 |
| CN110365845A (en) * | 2019-07-23 | 2019-10-22 | 维沃移动通信有限公司 | The call control method and terminal of terminal |
| CN111343334A (en) * | 2020-02-13 | 2020-06-26 | 惠州Tcl移动通信有限公司 | Event processing method and device, terminal equipment and storage medium |
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| CN102769810A (en) | 2012-11-07 |
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