CN205160628U - Intelligent terminal button equipment based on earphone interface - Google Patents
Intelligent terminal button equipment based on earphone interface Download PDFInfo
- Publication number
- CN205160628U CN205160628U CN201520568938.3U CN201520568938U CN205160628U CN 205160628 U CN205160628 U CN 205160628U CN 201520568938 U CN201520568938 U CN 201520568938U CN 205160628 U CN205160628 U CN 205160628U
- Authority
- CN
- China
- Prior art keywords
- intelligent terminal
- press key
- terminal press
- earphone interface
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
The utility model provides an intelligent terminal button equipment based on earphone interface, this intelligent terminal button equipment of includes: the controller is connected and is pressed keyboard and circuit unit, circuit unit passes through the microphone sound channel line connection intelligent terminal's that the earphone connects earphone interface, set up in the controller or controller and microphone sound channel line between, set up at least one button according to the keyboard, the one end of button is connected to the controller, and level or controller are connected to the other end, the user presses button information that the button triggered loops through output level signal and/or alternating current signal behind controller and the circuit unit, and level signal gets into the direct -current input end of microphone sound channel line, alternating current signal gets into the microphone input of microphone sound channel line. Utilize the utility model discloses, can make the earphone interface support a plurality of physics buttons under the condition of the earphone interface hardware that does not change intelligent terminal and connection to it needs among the prior art manual a lot of to distinguish different problems of pressing the key operation according to the button to solve.
Description
Technical field
The utility model relates to the intelligent terminal control technology field based on earphone interface, particularly relates to a kind of intelligent terminal press key equipment based on earphone interface.
Background technology
Existing line control earphone interface support dislodging switch, volume adds key and volume down key three physical buttons, the implementation of triple bond line control earphone as shown in Figure 1, K1, K2, K3 are three physical buttons, the corresponding volume add-substract key of K1, K2, the corresponding dislodging switch of K3, K1 in Fig. 1, K2 button also can be put between Mike's sound channel line and resistance, and R4 resistance can 0.
Label 101 is microphone channels line, label a, b, c, and d, e, f be corresponding Mike's offset side, Mike's input, direct-flow input end respectively, ground, left receiver sound channel line, right receiver sound channel line.Wherein:
Mike's offset side a series resistance R3, usual 2K about the Ω of resistance;
Two of microphone channels line 101 and intelligent terminal input b and C and are connected respectively;
, there is partiting dc capacitor C in microphone input termi-nal b;
Direct-flow input end c is line traffic control input, receives line traffic control signal (level signal after button on microphone channels line);
Microphone channels line must connect microphone circuit or simulation microphone circuit, and above-mentioned two input interfaces of no person (microphone input termi-nal b/ direct-flow input end c) can be prohibitted the use by intelligent terminal.
Intelligent terminal by judge direct-flow input end magnitude of voltage distinguish different buttons, the information of above-mentioned button can be inputted (direct-flow input end c) and passes to intelligent terminal by line traffic control, intelligent terminal operation system itself support line traffic control input.
Also there is second input path in Fig. 1, namely above-mentioned microphone input termi-nal b, microphone input termi-nal b connect partiting dc capacitor C, receive AC signal as microphone input termi-nal.But general key information is all level signal, so button exports directly can not input to intelligent terminal by microphone input termi-nal b.After must representing key information by AC signal, key information just can pass to intelligent terminal by ac input end b.
Earphone line control and intelligent terminal are by d altogether.
The microcontroller of Fig. 1 intelligent terminal comprises to be held the audio ADC circuit of input signal for receiving Mike and comprises the voltage detecting circuit for receiving direct-flow input signal, and common voltage detecting circuit comprises ADC or analog comparator etc. or special earphone identification chip.
See Fig. 1, the line control earphone embodiment of current main-stream, when pressing K1 respectively, K2, can access different resistance during K3 and enter circuit network, produce different direct current signals by electric resistance partial pressure at Mike's sound channel line, intelligent terminal identifies different buttons by detecting magnitude of voltage.
Current R1, R2 value is without unified standard, and different intelligent manufacturer terminal may use different resistance R1, R2 (as shown in Figure 1), and therefore the volume of line control earphone adds key and volume down key is generally incompatible in different intelligent terminal.Microphone channels line ground connection during owing to pressing dislodging switch (K3 key), magnitude of voltage is 0, uncorrelated with R1, R2, R3 resistance, so dislodging switch compatibility is good, software is generally by dislodging switch expansion key number.
Current line control earphone supports 3 buttons, above-mentioned 3 buttons generally can not meet actual application, such as: in some application, need to support multiple keypress function, the button demand of such as music player may have: play/suspend, upper one is first, next, volume adds, volume down, F.F., rewind, opens the application such as song files folder.
In order to the compatibility supporting the application of multiple button to consider line control earphone simultaneously, user need repeatedly by or long by the dislodging switch on line control earphone, carry out keyboard-coding to realize the object expanding multiple button, the software cooperation of intelligent terminal is simultaneously decoded, and common key combination mode is exemplified below:
Press primary key, press twice key continuously, press three keys, long-time button, repeatedly button continuously after more long-time button and long-time after more repeatedly button etc. distinguish repeatedly button operation, above-mentioned key combination can realize the function that a button completes multiple button.
Have the application of multiple button demand generally can use said method at present, but this expansion keying method existence of manual repeatedly button significantly uses deficiency:
A, user is needed to remember the compound mode of button;
B, continuous several times button distinguish different keypress functions, easily tired;
C, multiple button with the use of time, the differentiation of continuous key-press is difficult to control;
D, button be too fast cause excessively slowly key errors or button unsuccessful;
E, long-time by dislodging switch, key is pressed period microphone cisco unity malfunction;
F, with intelligent terminal compatibility bad.
Utility model content
The utility model provides a kind of intelligent terminal press key equipment based on earphone interface, to make earphone interface support multiple physical button when the earphone interface hardware and the connection that do not change intelligent terminal, and solve in prior art need manually repeatedly by button to distinguish the problem of different button operations.
To achieve these goals, the utility model embodiment provides a kind of intelligent terminal press key equipment based on earphone interface, and described intelligent terminal press key equipment comprises: controller, connects button group and circuit unit;
Described circuit unit, is connected the earphone interface of intelligent terminal, is arranged in described controller or between described controller and microphone channels line by the microphone channels line of Earphone joint;
Described button group, arranges at least one button, and one end of described button is connected to described controller, and the other end connects level or described controller;
Described button trigger key information, described controller controls described circuit unit triggering level signal and/or AC signal according to described key information, described level signal enters the direct-flow input end of described microphone channels line, and described AC signal enters the microphone input termi-nal of described microphone channels line.
In one embodiment, described microphone channels line connects the power pin of described controller, for described controller provides power supply.
In one embodiment, described intelligent terminal press key equipment also comprises, voltage transformation module, and described microphone channels line connects described voltage transformation module input, the output of described voltage transformation module connects described controller power source pin, for described controller provides power supply.
In one embodiment, described intelligent terminal press key equipment also comprises: storage capacitor, is connected between described power pin and ground wire.
In one embodiment, described intelligent terminal press key equipment also comprises: switch, be connected between described storage capacitor and described microphone channels line, described controller connects the control end of described switch, and the line between described switch with described storage capacitor is connected described power pin.
In one embodiment, described intelligent terminal press key equipment also comprises: voltage transformation module, is connected between described microphone channels line and described switch or is connected between described switch and described power pin.
In one embodiment, described intelligent terminal press key equipment also comprises: microphone analog circuit, and one end connects described microphone channels line, and the other end connects the described microphone analog circuit of described controller or ground and is controlled by described controller.
In one embodiment, described microphone analog circuit is resistance, current source or DAC, and the resistance value of described resistance, current source and DAC are regulated by controller.
In one embodiment, described intelligent terminal press key equipment comprises earphone interface, described earphone interface connects ground, and it is one or more to connect in L channel headphone line, R channel headphone line and microphone channels line.
In one embodiment, what described intelligent terminal press key equipment comprised in left receiver, right receiver and microphone is one or more.
In one embodiment, described intelligent terminal press key equipment also comprises: microphone channels line and ground wire identification circuit, and an input connects described microphone channels line, another input end grounding.
In one embodiment, described controller comprises data receiver circuit, and for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
In one embodiment, described intelligent terminal press key equipment also comprises: control volume and add and/or volume down circuit, described control volume adds and/or the output of volume down circuit connects described microphone channels line, and described control volume adds and/or volume down circuit is integrated in described controller or outside described controller.
In one embodiment, the number of described button is greater than 4.
Utilize the utility model, without the need to changing current earphone interface hardware circuit and connected mode, multiple button can be expanded, and do not need user to adopt repeatedly the mode of key combination to realize corresponding function, decrease and use button tired and the accuracy adding button, solve the problem that current line control earphone long button microphone is invalid simultaneously, particularly:
Earphone interface can be made to support many physical button when the earphone interface hardware and the connection that do not change intelligent terminal, and solve in prior art need manually repeatedly by button to distinguish the problem of different button operations;
Earphone interface hardware and the connection of intelligent terminal can not be changed, enable earphone interface support multiple physical button;
Do not need manually repeatedly by button to distinguish different button operations;
Button there will not be identification by mistake;
Long-time button can make microphone works;
Improve the compatibility of line control earphone and intelligent terminal.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the implementation schematic diagram of the triple bond line control earphone of existing line control earphone interface;
Fig. 2 is the structural representation of the utility model embodiment based on the intelligent terminal press key equipment of earphone interface;
Fig. 3 is the structural representation of the circuit unit 103 of the utility model one embodiment;
Fig. 4 is the structural representation of the circuit unit 103 of another embodiment of the utility model;
Fig. 5 is the structural representation of the circuit unit of another embodiment of the utility model;
Fig. 6 is the structural representation of the circuit unit of another embodiment of the utility model;
Fig. 7 is the structural representation of the circuit unit of another embodiment of the utility model;
Fig. 8 is the connected mode schematic diagram of the button for another embodiment of the utility model being different from Fig. 2;
Fig. 9 is that the press key equipment of the utility model one embodiment is for electrical schematic;
Figure 10 is that the press key equipment of the utility model one embodiment is for electrical schematic;
Figure 11 is that the press key equipment of another embodiment of the utility model is for electrical schematic;
Figure 12 A is that the press key equipment of another embodiment of the utility model is for electrical schematic;
Figure 12 B is that the press key equipment of the utility model one embodiment is for electrical schematic;
Figure 12 C is that the press key equipment of the utility model one embodiment is for electrical schematic;
Figure 13 is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 14 is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 15 A is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 15 B is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 15 C is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 16 A is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 16 B is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 16 C is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 17 A is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 17 B is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 18 A is four sections of Earphone joint structural representations of the utility model one embodiment;
Figure 18 B is four sections of Earphone joint structural representations of another embodiment of the utility model;
Figure 18 C is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 18 D is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 19 is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 20 A is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 20 B is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 20 C is the structural representation of the intelligent terminal press key equipment of another embodiment of the utility model;
Figure 21 is the control method flow chart of the intelligent terminal press key equipment of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Intelligent terminal in this embodiment is mobile phone, but is not limited to mobile phone, support line control earphone smart machine can with equipment of the present utility model with the use of.
As shown in Figure 2, the utility model embodiment provides a kind of intelligent terminal press key equipment based on earphone interface, and this intelligent terminal press key equipment comprises: controller 101, button group 102, circuit unit 103.
Circuit unit 103 connects the earphone interface of intelligent terminal by the microphone channels line of Earphone joint, and circuit unit 103 is arranged in controller 101 or between controller 101 and microphone channels line.
Button group 102 is arranged at least one button, one end of button is connected to controller 101, and the other end connects level or controller 101.The quantity of button can be arranged as required, 5 buttons has been shown in Fig. 2, has been only example, is not intended to limit.
Of the present utility model based in the intelligent terminal press key equipment of earphone interface, button trigger key information, key information is by controller 101 control circuit unit 103 triggering level signal and/or AC signal, level signal enters the direct-flow input end c of microphone channels line 104, and AC signal enters the microphone input termi-nal b of microphone channels line 104.
Fig. 3 is the structural representation of the circuit unit 103 of the utility model one embodiment.As shown in Figure 3, this circuit unit 103 comprises DAC module and coupling capacitance C0.DAC module is used for output AC signal, if DAC module has enough large driving force or rear end to connect amplifier module, so DAC can in Direct driver microphone channels line 104, embodiment, and coupling capacitance C0 can omit.Its driving force needed is determined by the resistance R3 of intelligent terminal and line capacitance.In Fig. 3, label s0 represents data-signal and the enable signal of self-controller.When DAC module is not enabled, DAC module exports high resistant, the signal that o controller is specified after enable.Preferred algorithm is as follows, when buttons different in the group 102 that pushes button, controller 101 exports the sine wave of different frequency by DAC module, as pressed K1, controller 101 control circuit unit 103 sends the sine wave of 2khz frequency, control transmission 3Khz sine wave when pressing K2 Time Controller, other buttons by that analogy, send the sinusoidal wave duration by increasing or increase the stability of communication with the amplitude adjusting sine wave signal.Intelligent terminal, by software identification said frequencies, determines key information.It should be noted that, above-mentioned algorithm is only citing, and the actual communication algorithm using DAC module to realize is not limited to this.
Fig. 4 is the structural representation of the circuit unit 103 of another embodiment of the utility model.As shown in Figure 4, this circuit unit 103 comprises sine-wave generator, and for sending sine wave signal, forcing function generator exists multiple known circuit structure, does not repeat them here.Controller 101 adjustable sends the sine wave of different frequency and different amplitude, can also adjust the sinusoidal wave duration sent.If the driving force of sine-wave generator is enough large, sine-wave generator can Direct driver microphone channels line, and coupling capacitance C0 can omit.Preferred algorithm, with the algorithm used in Fig. 3, repeats no more.
Foregoing circuit structure shown in Fig. 2 to Fig. 4 is without the need to changing the hardware configuration of intelligent terminal particularly mobile phone, by means of only calling software recording function that intelligent terminal operation system provides and frequency identification algorithm can realize, well known frequencies recognizer has fft algorithm, Ge Ceer algorithm, produces sinusoidal wave algorithm and can adopt known look-up table etc.
Fig. 5 is the structural representation of the circuit unit of another embodiment of the utility model.The circuit structure of the DC level that foregoing circuit unit exports is illustrated in Fig. 6, GPIO and electronic switch (switch in Fig. 6) built-up circuit unit, controller 101 control GPIO conducting and disconnection electronic switch, the conducting of electronic switch makes microphone channels line ground connection, function, as the dislodging switch pressing line control earphone, does not drive 104 lines when electronic switch disconnects.Wherein, electronic switch can be included in controller or between microphone channels line and controller.Controller repeatedly to be encoded different physical buttons by dislodging switch by simulation, without the need to user's manually repeatedly button.Structure shown in Fig. 5, solves current user manually repeatedly by the problem of dislodging switch, because current intelligent terminal software supports user manually repeatedly by dislodging switch, so Fig. 5 structure does not need the hardware and software changing intelligent terminal.
Fig. 6 is the structural representation of the circuit unit of another embodiment of the utility model, illustrate the circuit structure that foregoing circuit exports DC level: DAC is above-mentioned circuit unit, controlled to export direct current signal low level or high resistant by controller 101, the functional equivalent realized is in Fig. 5, in like manner, as shown in Figure 3, in Fig. 5, DAC also can output AC information, but tested by the large-tonnage product based on different mobile phone, described circuit structure is at output AC with when exporting direct current signal switching, some mobile phones (about 5%) end there will be button and identifies by mistake, reason may be because the mainboard of different mobile phone is different or drive software is different.
Fig. 7 is the structural representation of the circuit unit of another embodiment of the utility model, illustrate the circuit structure that foregoing circuit unit exports direct current signal or AC signal: electronic switch 0/1 (switch) and DAC, GPIO0/1 and DAC constitutes above-mentioned circuit unit 103, controller 101 controls electronic switch 0 and selects to export direct current signal or AC signal, the program, through the test of a large amount of actual products, does not have product stability and handset compatibility sex chromosome mosaicism.
In Fig. 2, button one end connects the input of low level other end connection control device, and this input can be GPIO, but is not limited to GPIO, and such as analog comparator or ADC also can realize its function.Recognition by pressing keys mode is as follows: GPIO input connect pull-up resistor so button disconnect Time Controller receive be high level, when button close Time Controller receive be low level.In like manner the other end of button also can connect high level, the GPIO termination pull down resistor of controller 101, or is not by resistance but the circuit of the drop-down and pull-up function realized by other means, such as metal-oxide-semiconductor etc.
Fig. 8 shows another connected mode schematic diagram of button, with Fig. 2 unlike, one end port that connection control device 101 is different respectively of each button, the same port of other end connection control device 101 or multiple port, controller 101 carrys out key range information by the short circuit of poll inquiry port and the state of open circuit, preferred algorithm is as follows, the high level and the low level square wave that send certain time to the key k1 of button group 102 to key k5 of controller 101 order, detect above-mentioned square wave at common port and judge whether button is pressed.
Above-mentioned controller 101 can be MCU/CPU/DSP or system level chip (SOC) or the FPGA containing DAC, ADC, switching tube and MCU/CPU/DSP, CPLD, logical devices such as PLD or realize the ASIC of logic control function, the utility model is not as limit.
In one embodiment, the power pin of microphone channels line 104 connection control device 101, for controller 101 provides power supply.Mike's offset side a of general intelligence terminal can provide 2v-3v voltage and 1mA ~ 2mA electric current, when usually providing 100uA electric current, the voltage of microphone channels line reduces 0.2v, if so press key equipment can be powered at 1.8v, and current sinking is less than 100uA, so press key equipment just can be powered by Mike's offset side a, as Fig. 9, at present general main flow low consumption low voltage controller can as the alternative of above-mentioned controller, as the MSP430FR5969 chip of TI company.
In one embodiment, microphone lines 104 connects voltage transformation module (DCDC), and DCDC exports connection control 101 power pin, for controller 101 provides power supply, as Figure 10.Voltage transformation module (DCDC) realizes high-low voltage to be converted to stable target voltage, as 0.3v-3v input voltage transfers stable 2.5v output voltage to, use voltage transformation module can improve the stability of equipment and the compatibility of equipment and intelligent terminal particularly mobile phone can be made to be improved, but shortcoming is the increase in volume and the cost of equipment, even if voltage transformation module is built in controller, also need the components and parts such as the inductance of some peripheries, the volume of equipment can be increased equally.
In one embodiment, intelligent terminal press key equipment also comprises: storage capacitor C1, is connected between power pin and ground wire.Discharge when press key equipment consumption in operation electric energy, provide power supply, as Figure 11 together with power line (microphone channels line).If the power consumption consumed during press key equipment work is greater than 100ua, so large power consumption can not be provided because Mike is biased, now press key equipment can not work, but after meeting storage capacitor C1, storage capacitor C1 can provide power supply to press key equipment, by algorithm rational schedule system work and idle time chien shih system electric capacity before work be full of electricity, press key equipment can normally be worked, even if Mike's offset side a can provide enough electric currents, connect the stability that storage capacitor C1 also can increase press key equipment.
In one embodiment, intelligent terminal press key equipment also comprises: switch, is connected between storage capacitor C1 and microphone channels line 104, the control end f of controller 101 connecting valve, the power pin of the line connection control device 101 between switch and storage capacitor C1.
As illustrated in fig. 12, if do not have switch 1 as illustrated in fig. 12, when switch 0 closes the power pin of Time Controller 101 and ground short circuit, controller 101 can not work.Make controller 101 working properly by following control method can be taked after switch 1 place in circuit: before switch 0 is closed, first cut-off switch 1 cuts off the discharge path of storage capacitor C1 to switch 0, so after microphone channels line is dragged down by switch 0, storage capacitor C1 is that press key equipment is powered.Test through great many of experiments, capacitance is calculated according to formula I*t=C*V, and retain the surplus of 1 times, equipment work is highly stable, controller 101 can control the arbitrary number of times of button, do not need external power supply at press key equipment and do not change on the basis of intelligent terminal hardware circuit, the circuit structure shown in Figure 12 A and control method can be stablized realization and repeatedly encode by dislodging switch and realize multiple entity key.
In one embodiment, intelligent terminal button sets and also comprises, voltage transformation module, and for controller is powered, as Figure 12 B and Figure 12 C, same Figure 10 of function of voltage transformation module, repeats no more.
In Figure 12 C, because switching tube 0 simulates the behavior of dislodging machine button, so need to be connected between voltage transformation module and 104 microphone channels lines.
In one embodiment, intelligent terminal press key equipment also comprises: battery interface, and battery interface connects the power pin of a battery and described controller.As shown in figure 13, battery interface can be common battery case, battery socket or simple wire, and the voltage that controller 101 uses determines cell voltage.
In one embodiment, press key equipment also comprises: AC-DC conversion module, and be connected to the receiver L channel of intelligent terminal or the power pin of receiver R channel and controller 101, AC-DC conversion module out-put supply, powers to press key equipment.AC-DC conversion module can realize interchange and turn direct current, as Figure 14, intelligent terminal sends fixed frequency by software program and is particular value (such as 22.1khz) and the maximum voice signal of volume, this signal is exported by receiver sound channel line (left or right sound channel line), this signal is direct current by AC-DC conversion module converts, powers to whole press key equipment.AC-DC conversion module realizes interchange and turns direct current, known ballast+DCDC voltage management chip can be adopted to realize, or be integrated in controller.
In one embodiment, the press key equipment shown in Fig. 2 to Figure 14 also comprises: microphone analog circuit, and one end connects microphone channels line 104, and other end connection control device 101 or ground, this microphone analog circuit is controlled by controller 101, as shown in fig. 15.Current line control earphone is in different intelligent terminal, and the use of especially different mobile phone has compatible problem, configurable microphone analog circuit can solve the problem.
During concrete enforcement, microphone analog circuit is resistance, current source or DAC, and the resistance value of resistance, current source and DAC all can have and regulated by controller.
Intelligent terminal can be band microphone apparatus by microphone analog circuit key range equipment, concrete principle is: after the access of microphone analog circuit, microphone channels line voltage can change, according to the magnitude of voltage of microphone channels line, intelligent terminal judges whether microphone accesses.The mode of microphone channels line change in voltage is caused to have: resistance (resistance network dividing potential drop), (R3 flows through dividing potential drop after electric current to current source, cause microphone channels line change in voltage), DAC (Direct driver microphone channels line), wherein, the rear end of DAC is generally containing amplifier element.
Figure 15 B illustrates the microphone analog circuit utilizing electric resistance partial pressure to realize, and resistance value can be regulated by signal s0 by controller 101, and resistance can be opened a way.If resistive-open, microphone analog circuit needs external, such as, by the earphone of the outer tape splicing microphone of earphone interface.
Figure 15 C illustrates and utilizes current source to realize simulation microphone circuit, and the electric current of current source can be regulated by s0 by controller, and current value can be 0.If electric current be 0 so microphone analog circuit need external, such as, by the earphone of the outer tape splicing microphone of earphone interface.If current source current is i, so the voltage of microphone channels line is Va – i*R3.
By the value of the resistance value of adjustment Figure 15 B or the electric current of Figure 15 C, microphone channels line voltage is made to be in the voltage range that correctly can identify microphone, the voltage range possibility difference that different intelligent terminals is above-mentioned, and then need different electric currents or resistance, because electric current and resistance can by control configurations, so microphone analog circuit can increase the compatibility of press key equipment and intelligent terminal.Correct resistance value, current value and DAC value are configurations in press key equipment configuration of dispatching from the factory.
In one embodiment, the press key equipment shown in Fig. 2 to Figure 15 C also comprises: earphone interface, and as shown in Figure 16 A, this earphone interface connects ground, and it is one or more to connect in L channel headphone line, R channel headphone line and microphone channels line.Earphone interface or be standard 4 sections of earphone interfaces (as shown in fig 16b, wherein, 1600 is four line earphone interfaces, 1601 is four line earphones, 1602 is microphone), or the interface (as shown in figure 16 c) of other types is used for reducing design volume, object to connect microphone channels line, left and right acoustic channels line and ground wire.
In one embodiment, it is one or more that press key equipment can also comprise in left receiver, right receiver and microphone.As shown in Figure 17 A and Figure 17 B, wherein 4 sections of earphone interfaces can be connected with press key equipment by wire.
During concrete enforcement, the press key equipment in Fig. 2 to 17B can also comprise: microphone channels line and ground wire identification circuit, and an input end connects described microphone channels line, another input end grounding.Current intelligent terminal particularly mobile phone, the microphone end of four sections of earphone interfaces can different with ground end position, and as shown in Figure 18 A and Figure 18 B, 1801 be sound channel line, 1802 is ground wire, and 1803 is Mike's line.In order to improve enough compatibility of intelligent terminal press key equipment, add microphone channels line and ground wire identification circuit, as shown in figure 18 c, the position that the microphone channels line of microphone channels line and ground wire identification circuit input and ground input is uncertain, but this circuit structure can identify microphone channels line and ground, thus fixed position I/O microphone channels line and ground wire (microphone channels line and ground wire both two directions' inputing export).In Figure 18 C, A, B two inputs are respectively microphone channels line or ground, and when A is microphone channels line, B is ground, and when B is microphone channels line, A is ground.
As shown in Figure 18 D, simulation compare 0 and inverter inv0 be power supply using A as power supply, analog comparator 1 and inverter 1 are using B as power supply, though so A and B which be microphone channels line (as power supply), necessarily there is an analog comparator job, another analog comparator ground and reverse power connection and do not work, causing short circuit to prevent the individual reverse power connection in ground, comparator and reverser electric power loop seal in current-limiting resistance, and preferred current-limiting resistance is 20k Ω.So microphone channels line must be the output of pmos0 or pmos1, ground wire must be the output of nmos0 or nmos1, wherein pmos0 and pmos1 necessarily has a conducting one disconnection, nmos0 and nmos1 conducting disconnection, so pmos0, pmos1 line with as microphone channels line, nmos0 and nmos1 line with as ground wire.
During concrete enforcement, the controller of the press key equipment in Fig. 2 to Figure 17 B and Figure 18 C can also comprise: data receiver circuit, for receiving the data transmitted from described intelligent terminal, data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.As Figure 19, data receipt unit is the signal that ADC receives receiver sound channel line F, and mobile phone terminal software and equipment can carry out data communication with known FSK or DTFM algorithm.
During concrete enforcement, Fig. 2 to Figure 17 B, the controller of the press key equipment in Figure 18 C and Figure 19 can also comprise: control volume and add and/or volume down circuit, control volume adds and/or the output of volume down circuit connects described microphone channels line, described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller, as shown in FIG. 20 A.
Volume adds and is controlled by described controller with volume key analog circuit, and Figure 20 B illustrates that the control volume utilizing electric resistance partial pressure to realize current line control earphone adds and volume down circuit, and resistance value can be regulated by signal s0, s1 by controller, and resistance can be opened a way.Volume is not had to add and volume key function if resistive-open is equivalent to.Figure 20 B, the resistance that control volume adds circuit is R0, controlling volume down circuitous resistance is R1, the voltage of the microphone channels line after regulating key is carried out by the resistance of control R0 and R1, mating correct volume with intelligent terminal adds the voltage with the microphone channels line of volume down function needs, illustrate, definition Figure 20 BK1 key mapping volume adds key, K2 is volume down key, when K1 and K2 key disconnects be, R0, R1 is infinitely great open circuit, when pressing K1 and K2 key, press key equipment is by suitable resistance value access resistor network, completing volume and add the function with volume down key. the resistance value of access configures when going out plant.
Figure 20 C illustrates that the electric current of adjustable current source realizes volume and adds and volume down analog circuit, and the electric current of current source can be regulated by s0, s1 by controller, and current value can be 0.If electric current is 0 be equivalent to and do not have volume to add and volume key function.
As previously mentioned, the described controller of described press key equipment controls described circuit unit and simulates switch of repeatedly seting out, carry out keyboard-coding, expansion key number, in like manner also can by described controller control described volume add and or volume circuit simulate and repeatedly add by volume and/or volume down button, carry out keyboard-coding, expansion key number.Also volume can be utilized to add, volume down and dislodging machine coordinate encodes, and such as: the different corresponding different key of keystroke sequence, the dislodging switch that the key mode of each key is above-mentioned is encoded, intelligent terminal needs software to coordinate the above-mentioned key combination mode of identification, thus completes the function of multiple secondary or physical bond.
In one embodiment, in the press key equipment of the utility model embodiment, the number of button is greater than 4, and the utility model is not as limit.
The utility model embodiment still provides a kind of control method, and for the intelligent terminal press key equipment shown in control chart 2 to Figure 20 C, as shown in figure 21, this control method comprises:
S2101: described controller receives user to the long button operation of a button in described button group;
S2102: when described button is pressed, described controller controls described circuit unit and sends the first AC signal or the first direct current signal, when described button is lifted, described controller controls described circuit unit and sends the second AC signal or the second direct current signal;
By the second AC signal or the second direct current signal, S2103: by the first AC signal or the first direct current signal, described intelligent terminal judges that button is pressed, judges that button is lifted;
Wherein, during long button operation, described controller release microphone channels line, microphone performs sound-recording function.
Existing triple bond line control earphone implementation is that electric resistance partial pressure produces different voltage, this magnitude of voltage passes to intelligent terminal through microphone channels line, so when with head of a household's button, microphone channels line can be fixed on certain by key level, now microphone can not be recorded, owing to there is this technological deficiency, line control earphone and mobile phone can not be utilized at present very easily to realize intercom function, the general operation of intercom is that after button, user speaks intercom recording, and key lifts intercom and the other side are passed in voice.
Utilize press key equipment of the present utility model and mobile phone can realize the function of intercom, particularly:
Button is pressed, and controller controls described circuit unit and sends the first AC signal, as 2khz is sinusoidal wave;
When described button is lifted, described controller controls described circuit unit and sends the second AC signal 2.1khz sine wave corresponding to the first AC signal, intelligent terminal, as mobile phone, can by fft algorithm or Ge Ceer algorithm identified 2khz sine wave, think that button is pressed, identify that 2.1kzh sine wave thinks that button is lifted, the stability of identification is increased by the amplitude of signal of increasing exchanges and time of continuing, experiment shows that mobile phone is when 44.1khz samples, AC signal time span was at 0.8 second, when Complex Noise, identify without any identifying and leak by mistake.
In like manner also can realize in the following manner:
Button is pressed, and described controller controls described circuit unit and sends the first direct current signal, simulates 5 dislodging switches, and the time interval of each dislodging machine is 200ms,
When described button is lifted, described controller controls described circuit unit and sends the second direct current signal corresponding to the first direct current signal, simulates six dislodging switches;
By identification 5 dislodging switches, intelligent terminal thinks that key is pressed, 6 times dislodging switch thinks that key lifts.
In like manner, key is pressed, and press key equipment sends 2khz sine wave and thinks that key is pressed, and send direct current signal, 6 times sine wave thinks that key lifts, realize long by.
The common ground of said method is: only in the moment that key is pressed and lifted (being less than 1s), press key equipment takies microphone channels line, and part press key equipment release microphone channels line during button, intelligent terminal can realize recording.
Utilize the utility model, without the need to changing current earphone interface hardware circuit and connected mode, multiple button can be expanded, and do not need user to adopt repeatedly the mode of key combination to realize corresponding function, decrease and use button tired and the accuracy adding button, solve the problem that current line control earphone long button microphone is invalid simultaneously, particularly:
Earphone interface can be made to support many physical button when the earphone interface hardware and the connection that do not change intelligent terminal, and solve in prior art need manually repeatedly by button to distinguish the problem of different button operations;
Earphone interface hardware and the connection of intelligent terminal can not be changed, enable earphone interface support multiple physical button;
Do not need manually repeatedly by button to distinguish different button operations;
Button there will not be identification by mistake;
Long-time button can make microphone works;
Improve the compatibility of line control earphone and intelligent terminal.
Apply specific embodiment in the utility model to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (30)
1. based on an intelligent terminal press key equipment for earphone interface, it is characterized in that, described intelligent terminal press key equipment comprises: controller, connects button group and circuit unit;
Described circuit unit, is connected the earphone interface of intelligent terminal, is arranged in described controller or between described controller and microphone channels line by the microphone channels line of Earphone joint;
Described button group, arranges at least one button, and one end of described button is connected to described controller, and the other end connects level or described controller;
User presses the key information of described button triggering successively by outputs level signals and/or AC signal after described controller and circuit unit, described level signal enters the direct-flow input end of described microphone channels line, and described AC signal enters the microphone input termi-nal of described microphone channels line.
2. the intelligent terminal press key equipment based on earphone interface according to claim 1, it is characterized in that, described microphone channels line connects the power pin of described controller, for described controller provides power supply.
3. the intelligent terminal press key equipment based on earphone interface according to claim 1, it is characterized in that, described intelligent terminal press key equipment also comprises, voltage transformation module, described microphone channels line connects described voltage transformation module input, the output of described voltage transformation module connects described controller power source pin, for described controller provides power supply.
4. the intelligent terminal press key equipment based on earphone interface according to claim 2, is characterized in that, described intelligent terminal press key equipment also comprises: storage capacitor, is connected between described power pin and ground wire.
5. the intelligent terminal press key equipment based on earphone interface according to claim 4, it is characterized in that, described intelligent terminal press key equipment also comprises: switch, be connected between described storage capacitor and described microphone channels line, described controller connects the control end of described switch, and the line between described switch with described storage capacitor is connected described power pin.
6. the intelligent terminal press key equipment based on earphone interface according to claim 5, it is characterized in that, described intelligent terminal press key equipment also comprises: voltage transformation module, is connected between described microphone channels line and described switch or is connected between described switch and described power pin.
7. the intelligent terminal press key equipment based on earphone interface according to claim 1, is characterized in that, described intelligent terminal press key equipment also comprises: battery interface, and described battery interface connects the power pin of a battery and described controller.
8. the intelligent terminal press key equipment based on earphone interface according to claim 1, it is characterized in that, described intelligent terminal press key equipment also comprises: AC-DC conversion module, is connected between the receiver L channel of described intelligent terminal or the power pin of receiver R channel and described controller.
9. the intelligent terminal press key equipment based on earphone interface according to any one of claim 1 to 8, it is characterized in that, described intelligent terminal press key equipment also comprises: microphone analog circuit, one end connects described microphone channels line, the other end connects described controller or ground, and described microphone analog circuit is controlled by described controller.
10. the intelligent terminal press key equipment based on earphone interface according to claim 9, is characterized in that, described microphone analog circuit is resistance, current source or DAC, and the resistance value of described resistance, current source and DAC are regulated by controller.
11. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8 or 10, it is characterized in that, described intelligent terminal press key equipment comprises earphone interface, described earphone interface connects ground, and it is one or more to connect in L channel headphone line, R channel headphone line and microphone channels line.
The 12. intelligent terminal press key equipments based on earphone interface according to claim 9, it is characterized in that, described intelligent terminal press key equipment comprises earphone interface, described earphone interface connects ground and microphone channels line, and it is one or more to connect in L channel headphone line, R channel headphone line and microphone channels line.
13. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8 or 10, is characterized in that, it is one or more that described intelligent terminal press key equipment comprises in left receiver, right receiver and microphone.
The 14. intelligent terminal press key equipments based on earphone interface according to claim 9, is characterized in that, it is one or more that described intelligent terminal press key equipment comprises in left receiver, right receiver and microphone.
15. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8,10,12 or 14, it is characterized in that, described intelligent terminal press key equipment also comprises: microphone channels line and ground wire identification circuit, one input connects described microphone channels line, another input end grounding.
The 16. intelligent terminal press key equipments based on earphone interface according to claim 9, it is characterized in that, described intelligent terminal press key equipment also comprises: microphone channels line and ground wire identification circuit, and one end connects described microphone channels line, other end ground connection.
The 17. intelligent terminal press key equipments based on earphone interface according to claim 11, it is characterized in that, described intelligent terminal press key equipment also comprises: microphone channels line and ground wire identification circuit, and one end connects described microphone channels line, other end ground connection.
The 18. intelligent terminal press key equipments based on earphone interface according to claim 13, it is characterized in that, described intelligent terminal press key equipment also comprises: microphone channels line and ground wire identification circuit, and one end connects described microphone channels line, other end ground connection.
19. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8,10,12,14,16,17 or 18, it is characterized in that, described controller comprises data receiver circuit, for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
The 20. intelligent terminal press key equipments based on earphone interface according to claim 9, it is characterized in that, described controller comprises data receiver circuit, for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
The 21. intelligent terminal press key equipments based on earphone interface according to claim 11, it is characterized in that, described controller comprises data receiver circuit, for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
The 22. intelligent terminal press key equipments based on earphone interface according to claim 13, it is characterized in that, described controller comprises data receiver circuit, for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
The 23. intelligent terminal press key equipments based on earphone interface according to claim 15, it is characterized in that, it is characterized in that, described controller comprises data receiver circuit, for receiving the data transmitted from described intelligent terminal, described data receiver circuit connects receiver L channel or the receiver R channel of described intelligent terminal.
24. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8,10,12,14,16,17,18,20,21,22 or 23, it is characterized in that, described intelligent terminal press key equipment also comprises: control volume and add and/or volume down circuit, described control volume adds and/or the output of volume down circuit connects described microphone channels line, and described control volume adds and/or volume down circuit is integrated in described controller or outside described controller.
The 25. intelligent terminal press key equipments based on earphone interface according to claim 9, it is characterized in that, described intelligent terminal press key equipment also comprises: volume adds and/or volume down analog circuit, described volume adds and/or the output of volume down analog circuit connects described microphone channels line, and described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller.
The 26. intelligent terminal press key equipments based on earphone interface according to claim 11, it is characterized in that, described intelligent terminal press key equipment also comprises: volume adds and/or volume down analog circuit, described volume adds and/or the output of volume down analog circuit connects described microphone channels line, and described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller.
The 27. intelligent terminal press key equipments based on earphone interface according to claim 13, it is characterized in that, described intelligent terminal press key equipment also comprises: volume adds and/or volume down analog circuit, described volume adds and/or the output of volume down analog circuit connects described microphone channels line, and described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller.
The 28. intelligent terminal press key equipments based on earphone interface according to claim 15, it is characterized in that, described intelligent terminal press key equipment also comprises: volume adds and/or volume down analog circuit, described volume adds and/or the output of volume down analog circuit connects described microphone channels line, and described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller.
The 29. intelligent terminal press key equipments based on earphone interface according to claim 19, it is characterized in that, described intelligent terminal press key equipment also comprises: volume adds and/or volume down analog circuit, described volume adds and/or the output of volume down analog circuit connects described microphone channels line, and described volume adds and/or volume down analog circuit is integrated in described controller or outside described controller.
30. intelligent terminal press key equipments based on earphone interface according to claim 1,2,3,4,5,6,7,8,10,12,14,16,17,18,20,21,22,23,25,26,27,28 or 29, it is characterized in that, the number of described button is greater than 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568938.3U CN205160628U (en) | 2015-07-31 | 2015-07-31 | Intelligent terminal button equipment based on earphone interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568938.3U CN205160628U (en) | 2015-07-31 | 2015-07-31 | Intelligent terminal button equipment based on earphone interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205160628U true CN205160628U (en) | 2016-04-13 |
Family
ID=55696267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520568938.3U Expired - Fee Related CN205160628U (en) | 2015-07-31 | 2015-07-31 | Intelligent terminal button equipment based on earphone interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205160628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690813A (en) * | 2017-04-07 | 2018-02-13 | 深圳市汇顶科技股份有限公司 | The power supply circuit of earphone and earphone |
-
2015
- 2015-07-31 CN CN201520568938.3U patent/CN205160628U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690813A (en) * | 2017-04-07 | 2018-02-13 | 深圳市汇顶科技股份有限公司 | The power supply circuit of earphone and earphone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105187631A (en) | Intelligent terminal key device based on earphone interface and control method of intelligent terminal key device | |
| CN106787055B (en) | A kind of charging circuit, system, method and terminal | |
| CN103379401B (en) | Power supply system, electronic installation and the earphone supply lead powered by earphone interface | |
| CN205489659U (en) | Portable power source with TYPE -C interface | |
| CN202425016U (en) | Circuit for identifying earphone type intelligently | |
| CN206506669U (en) | A kind of differential-to-single-ended change-over circuit and bluetooth earphone for bluetooth earphone | |
| CN206879039U (en) | Support the wireless microphone and intelligent terminal karaoke OK system of usb audio | |
| CN204761690U (en) | Head circuit | |
| CN108599530A (en) | A kind of powering mode converter and powering mode conversion method | |
| CN104105020B (en) | Bluetooth headset, charging method and charging system | |
| CN203251412U (en) | Device capable of using power source of electronic equipment to supply power to automatic noise cancellation (ANC) earphone | |
| CN205160628U (en) | Intelligent terminal button equipment based on earphone interface | |
| CN107690813B (en) | The power supply circuit of earphone and earphone | |
| CN103633952B (en) | switching mode amplifier operation | |
| CN103108061B (en) | Mobile phone, device and method capable of conducting electric energy transfer based on mobile phone audio interface | |
| CN108683236A (en) | A kind of mobile terminal OTG charging methods and device | |
| CN210246374U (en) | Charging base for communicating with Bluetooth headset | |
| CN204167963U (en) | vehicle-mounted mobile power supply | |
| CN109446140A (en) | Micro USB interface comprehensive multiplexing circuit and electronic equipment | |
| CN215818589U (en) | Circuit structure of charging box and charging box | |
| CN102769314B (en) | Power selection circuit and charger | |
| CN211698665U (en) | Intelligent terminal, intelligent base equipment and intelligent control system | |
| CN208724146U (en) | Conference microphone | |
| CN207939393U (en) | A kind of powering mode converter | |
| CN207166750U (en) | A kind of audio frequency apparatus of the more mobile phone operating systems of automatic identification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20210731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |