CN105792054A - Key control circuit for headset and control method - Google Patents
Key control circuit for headset and control method Download PDFInfo
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- CN105792054A CN105792054A CN201610345198.6A CN201610345198A CN105792054A CN 105792054 A CN105792054 A CN 105792054A CN 201610345198 A CN201610345198 A CN 201610345198A CN 105792054 A CN105792054 A CN 105792054A
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- earphone
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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
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a key control circuit for a headset and a control method. The key control circuit comprises a headset socket, a headset and an intelligent key circuit, wherein the intelligent key circuit is connected with the headset socket and the headset; the intelligent key circuit comprises an MCU, a normally closed key, a low-pass filter, a resistor R3 and a capacitor C1; a fourth pin of the headset socket is connected with one end of the normally closed key, one end of the resistor R3 and one end of the low-pass filter; the other end of the normally closed key is connected with the fourth pin of the headset and a detection pin of the MCU; the other end of the resistor R3 is connected with a pin VDD of the MCU and one end of the capacitor C1; the other end of the capacitor C1 is grounded; the other end of the low-pass filter is connected with the MCU. The key control circuit provided by the invention interacts with mobile phone APP and can effectively control the mobile phone APP, so as to execute the corresponding operation instruction.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to key control circuit and the control method of a kind of earphone.
Background technology
Development along with science and technology, electronic equipment have also been obtained development at full speed, and the kind of electronic product also gets more and more, and people have also enjoyed the various facilities that scientific development brings, present people can pass through various types of electronic equipments, enjoys the comfortable life along with development in science and technology brings.Such as, people can pass through to be pressed into equipment connection line control earphone and carry out listening music, receive calls, connect the operations such as voice-enabled chat.
Line control earphone refers to control the earphone of access device on earphone cord, such as control broadcasting and the pickup feature of mobile phone, the functions such as volume adjustment, specifically can refer to the line control earphone structural representation of prior art as shown in Figure 1, line control earphone is three keyed, if to increase the 4th button, is unallowed for Fructus Mali pumilae system or Android system, thus the application of mobile phone A PP can not well be controlled, and carry out effective mutual with mobile phone A PP.
Summary of the invention
It is an object of the invention to provide the key control circuit of a kind of earphone and control method, to solve the problem that line control earphone can not effectively control mobile phone A PP.
First aspect, embodiments provides the key control circuit of a kind of earphone, and including earphone socket, earphone and intelligence key circuit, described intelligence key circuit is connected with described earphone socket and described earphone respectively；
Described intelligence key circuit includes MCU, normally closed button, low pass filter, resistance R3 and electric capacity C1,
4th pin of described earphone socket respectively with one end of described normally closed button, one end of described resistance R3, described low pass filter one end be connected, the other end of described normally closed button is connected with the 4th pin of described earphone and the detection pin of described MCU respectively, the other end of described resistance R3 is connected with one end of the pin VDD of described MCU and described electric capacity C1 respectively, the other end ground connection of described electric capacity C1, the other end of described low pass filter is connected with described MCU.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, also include: when described normally closed button is off, described detection pin detects that level is low level by high level saltus step, described MCU exports square wave, described square wave is filtered obtaining the square wave of filtering through low pass filter, the square wave of described filtering is added on the MIC line that the 4th pin with described earphone socket is connected and is sent to terminal, so that described terminal determines that described normally closed button is pressed；
When described normally closed button is in closure state, described detection pin detects when described level is described high level by low transition, and described MCU stops exporting described square wave；
When described terminal can't detect described square wave, described normally closed button is released.
In conjunction with the first possible embodiment of first aspect, embodiments provide the embodiment that first aspect the second is possible, also include: when described normally closed button is in described closure state, described earphone is in the conduction state.
In conjunction with first aspect, embodiments providing the third possible embodiment of first aspect, described earphone socket includes the first pin, the second pin, three-prong and the 4th pin；
First pin of described earphone socket is connected with the first end of the first pin of described earphone and the left earphone of described earphone respectively, second pin of described earphone socket is connected with the first end of the second pin of described earphone and the right earphone of described earphone respectively, the three-prong of described earphone socket respectively with the three-prong of described earphone, one end of mike MIC, one end of play button, one end of upper switch key, one end of lower switch key and the second end of described right earphone are connected, 4th pin of described earphone socket is connected with the 4th pin of described earphone by described normally closed button.
In conjunction with the third possible embodiment of first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, also include: in described earphone, the other end of described mike MIC respectively with the other end of described play button, one end of resistance R1, one end of resistance R2 and the 4th pin of described earphone are connected, described resistance R1 connects with described upper switch key, described resistance R2 connects with described lower switch key, described resistance R1, described upper switch key and described resistance R2, described lower switch key is in parallel, and be connected with the 4th pin of described earphone.
In conjunction with the first possible embodiment of first aspect, embodiments providing the 5th kind of possible embodiment of first aspect, described terminal is mobile phone.
In conjunction with the third possible embodiment of first aspect, embodiments provide the 6th kind of possible embodiment of first aspect, first pin of described earphone socket be L channel, described earphone socket the second pin be R channel, described earphone socket three-prong be ground wire, the 4th pin of described earphone socket is mike.
In conjunction with the third possible embodiment of first aspect, embodiments provide the 7th kind of possible embodiment of first aspect, first pin of described earphone is L channel, second pin of described earphone is R channel, the three-prong of described earphone is ground wire, and the 4th pin of described earphone is mike.
Second aspect, embodiments provides the key control method of a kind of earphone, is applied to terminal, and described method includes:
Receive the square wave of at least one filtering that key control circuit sends；
The number of the square wave according at least one filtering described performs corresponding operational order.
In conjunction with second aspect, embodiments providing the first possible embodiment of second aspect, described operational order includes cutting song, collects list of songs, shares social platform and/or recorded speech.
Key control circuit according to a kind of earphone provided by the invention and control method, intelligence key circuit is connected with earphone by earphone socket, and plug is connected with terminal, when normally closed button is off, detection pin detects that level is low level by high level saltus step, MCU exports square wave, and square wave is filtered obtaining the square wave of filtering through low pass filter, and the square wave of filtering is added to the 4th pin of earphone socket be sent to terminal；When normally closed button is in closure state, detection pin detects that level is high level by low transition, and MCU stops output square wave, so that the key control circuit of earphone can efficiently control mobile phone A PP, and interact with mobile phone A PP, thus perform corresponding operational order.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, it is to be understood that, the following drawings illustrate only certain embodiments of the present invention, therefore the restriction to scope it is not construed as, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
Fig. 1 is the line control earphone structural representation of prior art；
The key control circuit schematic diagram of a kind of earphone that Fig. 2 provides for the embodiment of the present invention；
The key control method flow chart of a kind of earphone that Fig. 3 provides for the embodiment of the present invention.
Description of reference numerals:
10-earphone socket；20-intelligence key circuit；30-earphone.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Generally can with various different configurations arrange and design with the assembly of the embodiment of the present invention that illustrate described in accompanying drawing herein.Therefore, below the detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit claimed the scope of the present invention, but is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, the every other embodiment that those skilled in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
For the problem that line control earphone in prior art can not effectively control mobile phone A PP, the invention provides the key control circuit of a kind of earphone and control method, the normally closed button low level corresponding when off-state or closure state or high level is detected by the detection pin of the MCU in intelligence key circuit, MCU determines whether to carry out square wave output according to the high level detected or low level, it is achieved thereby that mutual with mobile phone A PP, and efficiently control mobile phone A PP, thus perform corresponding operational order.It is described in detail by the examples below.
The key control circuit schematic diagram of a kind of earphone that Fig. 2 provides for the embodiment of the present invention.
With reference to Fig. 2, the key control circuit of earphone includes earphone socket 10, earphone 30 and intelligence key circuit 20, and described intelligence key circuit 20 is connected with described earphone socket 10 and described earphone 30 respectively.
Described intelligence key circuit includes MCU, normally closed button, low pass filter, resistance R3 and electric capacity C1,
4th pin of described earphone socket 10 respectively with one end of described normally closed button, one end of described resistance R3, described low pass filter one end be connected, the other end of described normally closed button is connected with the 4th pin of described earphone 30 and the detection pin of MCU respectively, the other end of described resistance R3 is connected with one end of the pin VDD of described MCU and described electric capacity C1 respectively, the other end ground connection of described electric capacity C1, the other end of described low pass filter is connected with described MCU.
Here, earphone socket 20 includes four pins, respectively the first pin, the second pin, three-prong and the 4th pin.
Earphone 30 also includes four pins, respectively the first pin, the second pin, three-prong and the 4th pin.
Exemplary embodiment according to the present invention, also include: when described normally closed button is off, described detection pin detects that level is low level by high level saltus step, described MCU exports square wave, described square wave is filtered obtaining the square wave of filtering through low pass filter, the square wave of described filtering is added to the 4th pin of described earphone socket 10 be sent to terminal, so that described terminal determines that described normally closed button is pressed；
When described normally closed button is in closure state, described detection pin detects that described level is described high level by low transition, and described MCU stops exporting described square wave；
When described terminal can't detect described square wave, described normally closed button is released.
Specifically, when normally closed button disconnects, illustrating that normally closed button is pressed, now, the MIC line of the MIC line of the 4th pin of the earphone socket 10 being respectively connected with normally closed button and the 4th pin of earphone 30 disconnects.
Detection pin detects that level is low level by high level saltus step, MCU exports square wave, square wave is filtered obtaining the square wave of filtering through low pass filter, the square wave of filtering is added on the MIC line that the 4th pin with earphone socket 10 is connected and is sent to terminal, after terminal receives square wave, it is determined that normally closed button is pressed.
When user discharges normally closed button, the MIC line of the MIC line of the 4th pin of the earphone socket 10 being respectively connected with normally closed button and the 4th pin of earphone 30 is connected, level is by low transition to high level, MCU stops the output of square wave, and when terminal can't detect square wave, then it is assumed that normally closed button is released.
Here, terminal can be such as, but not limited to, being specially mobile phone.
The square wave of MCU output can be such as, but not limited to, being specially 19Khz.
Exemplary embodiment according to the present invention, also includes: when described normally closed button is in described closure state, described earphone 30 is in the conduction state.
Specifically, when normally closed button is in closure state, illustrate that normally closed button is not pressed.Now, in the conduction state with the line that the first end of left earphone and the second end, the first end of right earphone and the second end are connected, intelligence key circuit 20 does not disturb the normal operating of earphone 30.
Exemplary embodiment according to the present invention, described earphone socket 10 includes the first pin, the second pin, three-prong and the 4th pin；
First pin of described earphone socket 10 is connected with the first end of the first pin of described earphone 30 and the left earphone of described earphone 30 respectively, second pin of described earphone socket 10 is connected with the first end of the second pin of described earphone 30 and the right earphone of described earphone 30 respectively, the three-prong of described earphone socket 10 respectively with the three-prong of described earphone 30, one end of mike MIC, one end of play button, one end of upper switch key, one end of lower switch key and the second end of described right earphone are connected, 4th pin of described earphone socket 10 is connected by the 4th pin of described normally closed button with described earphone 30.
Exemplary embodiment according to the present invention, also include: in described earphone 30, the other end of described mike MIC is connected with the other end of described play button, one end of resistance R1, one end of resistance R2 and the 4th pin of described earphone 30 respectively, described resistance R1 connects with described upper switch key, described resistance R2 connects with described lower switch key, described resistance R1, described upper switch key and described resistance R2, described lower switch key are in parallel, and are connected with the 4th pin of described earphone 30.
Here, resistance R1 is 600 Europe, and resistance R2 is 220 Europe.
Exemplary embodiment according to the present invention, the first pin of described earphone socket 10 be L channel, described earphone socket 10 the second pin be R channel, described earphone socket 10 three-prong be ground wire, the 4th pin of described earphone socket 10 is mike.
Exemplary embodiment according to the present invention, the first pin of described earphone 30 is L channel, and the second pin of described earphone 30 is R channel, and the three-prong of described earphone 30 is ground wire, and the 4th pin of described earphone 30 is mike.
Here, four pins of earphone 30 can be another mode, specifically, the first pin of earphone 30 is L channel, the second pin of earphone 30 is R channel, and the three-prong of earphone 30 is mike, and the 4th pin of described earphone 30 is ground wire.
What the present invention adopted is the first pin of earphone 30 is L channel, and the second pin of earphone 30 is R channel, and the three-prong of earphone 30 is ground wire, and the 4th pin of earphone 30 is this mode of mike.
Key control circuit according to a kind of earphone provided by the invention, intelligence key circuit is connected with earphone by earphone socket, and plug is connected with terminal, when normally closed button is off, detection pin detects that level is low level by high level saltus step, MCU exports square wave, and square wave is filtered obtaining the square wave of filtering through low pass filter, and the square wave of filtering is added on the MIC line that the 4th pin with earphone socket is connected and is sent to terminal；When normally closed button is in closure state, detection pin detects that level is high level by low transition, and MCU stops output square wave, so that the key control circuit of earphone can efficiently control mobile phone A PP, and interact with mobile phone A PP, thus perform corresponding operational order.
The key control method flow chart of a kind of earphone that Fig. 3 provides for the embodiment of the present invention.
With reference to Fig. 3, key control method is applied to terminal, specifically includes following steps:
Step S301, receives the square wave of at least one filtering that key control circuit sends.
Step S302, performs corresponding operational order according to the number of the square wave of at least one filtering described.
Exemplary embodiment according to the present invention, described operational order includes cutting song, collects list of songs, shares social platform and/or recorded speech.
Specifically, terminal can be such as, but not limited to, being specially mobile phone.When mobile phone receives the square wave of at least one filtering that key control circuit sends, thus the number according to the square wave of at least one filtering performs corresponding operational order.
When user clicks normally closed button, handset identity is the square wave of a filtering, now performs to cut song operation, and chooses the song similar with previous song style and be pushed to user.
When user double-clicks normally closed button, handset identity is the square wave of two filtering, now current song is stowed in list of songs.
When user is by three times normally closed buttons, handset identity is the square wave of three filtering, now current song is shared in social platform.
When user is often by normally closed button, now perform the operational order of recorded speech.
Key control method according to a kind of earphone provided by the invention, receive the square wave of at least one filtering that key control circuit sends, the number of the square wave according at least one filtering performs corresponding operational order, so that key control circuit can efficiently control mobile phone A PP (Application, application program), and interact with mobile phone A PP, thus perform corresponding operational order.
The device that the embodiment of the present invention provides can be the specific hardware on equipment or be installed on the software on equipment or firmware etc..The device that the embodiment of the present invention provides, its technique effect realizing principle and generation is identical with preceding method embodiment, for being briefly described, the not mentioned part of device embodiment part, it is referred to corresponding contents in preceding method embodiment.Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the specific works process of system described above, device and unit, all it is referred to the corresponding process in said method embodiment, does not repeat them here.
In embodiment provided by the present invention, it should be understood that disclosed apparatus and method, it is possible to realize by another way.Device embodiment described above is merely schematic, such as, the division of described unit, it is only a kind of logic function to divide, actual can have other dividing mode when realizing, again such as, multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can ignore, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or call connection can be through the INDIRECT COUPLING of some telephony interface, device or unit or call connects, it is possible to be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
It addition, each functional unit in embodiment provided by the invention can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.
If described function is using the form realization of SFU software functional unit and as independent production marketing or use, it is possible to be stored in a computer read/write memory medium.Based on such understanding, part or the part of this technical scheme that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.
And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-OnlyMemory), the various media that can store program code such as random access memory (RAM, RandomAccessMemory), magnetic disc or CD.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be carried out definition further and explain in accompanying drawing subsequently, in addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicate or hint relative importance.
Last it is noted that embodiment described above, it is only the specific embodiment of the present invention, in order to technical scheme to be described, it is not intended to limit, protection scope of the present invention is not limited thereto, although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: any those familiar with the art is in the technical scope that the invention discloses, technical scheme described in previous embodiment still can be modified by it maybe can readily occur in change, or wherein portion of techniques feature is carried out equivalent replacement；And these amendments, change or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.All should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (10)
1. the key control circuit of an earphone, it is characterized in that, including earphone socket (10), earphone (30) and intelligence key circuit (20), described intelligence key circuit (20) is connected with described earphone socket (10) and described earphone (30) respectively；
Described intelligence key circuit includes MCU, normally closed button, low pass filter, resistance R3 and electric capacity C1,
4th pin of described earphone socket (10) respectively with one end of described normally closed button, one end of described resistance R3, described low pass filter one end be connected, the other end of described normally closed button is connected with the 4th pin of described earphone (30) and the detection pin of described MCU respectively, the other end of described resistance R3 is connected with one end of the pin VDD of described MCU and described electric capacity C1 respectively, the other end ground connection of described electric capacity C1, the other end of described low pass filter is connected with described MCU.
2. the key control circuit of a kind of earphone according to claim 1, it is characterized in that, also include: when described normally closed button is off, described detection pin detects that level is low level by high level saltus step, described MCU exports square wave, described square wave is filtered obtaining the square wave of filtering through low pass filter, the square wave of described filtering is added on the MIC line that the 4th pin with described earphone socket (10) is connected and is sent to terminal, so that described terminal determines that described normally closed button is pressed；
When described normally closed button is in closure state, described detection pin detects that described level is described high level by low transition, and described MCU stops exporting described square wave；
When described terminal can't detect described square wave, described normally closed button is released.
3. the key control circuit of a kind of earphone according to claim 2, it is characterised in that also include: when described normally closed button is in described closure state, described earphone (20) is in the conduction state.
4. the key control circuit of a kind of earphone according to claim 1, it is characterised in that described earphone socket (10) includes the first pin, the second pin, three-prong and the 4th pin；
First pin of described earphone socket (10) is connected with the first end of the first pin of described earphone (30) and the left earphone of described earphone (30) respectively, second pin of described earphone socket (10) is connected with the first end of the second pin of described earphone (30) and the right earphone of described earphone (30) respectively, the three-prong of described earphone socket (10) respectively with the three-prong of described earphone (30), one end of mike MIC, one end of play button, one end of upper switch key, one end of lower switch key and the second end of described right earphone are connected, 4th pin of described earphone socket (10) is connected by the 4th pin of described normally closed button with described earphone (30).
5. the key control circuit of a kind of earphone according to claim 4, it is characterized in that, also include: in described earphone (30), the other end of described mike MIC respectively with the other end of described play button, one end of resistance R1, one end of resistance R2 and the 4th pin of described earphone (30) are connected, described resistance R1 connects with described upper switch key, described resistance R2 connects with described lower switch key, described resistance R1, described upper switch key and described resistance R2, described lower switch key is in parallel, and be connected with the 4th pin of described earphone (30).
6. the key control circuit of a kind of earphone according to claim 2, it is characterised in that described terminal is mobile phone.
7. the key control circuit of a kind of earphone according to claim 4, it is characterized in that, first pin of described earphone socket (10) be L channel, described earphone socket (10) the second pin be R channel, described earphone socket (10) three-prong be ground wire, the 4th pin of described earphone socket (10) is mike.
8. the key control circuit of a kind of earphone according to claim 4, it is characterized in that, first pin of described earphone (30) is L channel, second pin of described earphone (30) is R channel, the three-prong of described earphone (30) is ground wire, and the 4th pin of described earphone (30) is mike.
9. a key control method for earphone, is applied to terminal, it is characterised in that described method includes:
Receive the square wave of at least one filtering that key control circuit sends；
The number of the square wave according at least one filtering described performs corresponding operational order.
10. the key control method of a kind of earphone according to claim 9, it is characterised in that described operational order includes cutting song, collects list of songs, shares social platform and/or recorded speech.
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| CN201610345198.6A CN105792054B (en) | 2016-05-23 | 2016-05-23 | A kind of key control circuit of earphone |
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| CN109729474B (en) * | 2018-11-19 | 2020-03-31 | 视联动力信息技术股份有限公司 | Method for switching songs and intelligent equipment |
| CN113473296A (en) * | 2021-07-01 | 2021-10-01 | 广东朝阳电子科技股份有限公司 | Control circuit and method of key expansion type wired earphone |
| CN113473296B (en) * | 2021-07-01 | 2024-03-01 | 广东朝阳电子科技股份有限公司 | Control circuit and method for key expansion type wired earphone |
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