CN105425975A - Keyboard - Google Patents
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- Publication number
- CN105425975A CN105425975A CN201511023488.0A CN201511023488A CN105425975A CN 105425975 A CN105425975 A CN 105425975A CN 201511023488 A CN201511023488 A CN 201511023488A CN 105425975 A CN105425975 A CN 105425975A
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- button
- keyboard
- row
- electrical cnnector
- port
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
- G06F3/0216—Arrangements for ergonomically adjusting the disposition of keys of a keyboard
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention discloses a keyboard which comprises a main control panel and a plurality of independent keys with total functions; an electrical interface is arranged on each of two opposite sides of each key; each electrical interface is provided with an earth port and a single-channel or multichannel signal port; each row of keys is connected onto the keyboard in an inserting manner through the corresponding electrical interfaces; an electrical connector, corresponding to each row of keys, is arranged on the main control panel and used for inserting the corresponding row of keys; the earth port and the single-channel or multichannel signal port which are matched with the corresponding electrical interface are arranged on one side, connected with the corresponding key, of each electrical connector; through the electrical connectors, the earth port of each key is connected to the ground wire on the main control panel, and the signal port of each key is connected to the corresponding signal input port on the main control panel; and when one of the keys is pressed, the electrical connector of the row to which the key belongs send a key identification signal for uniquely identifying the key to the main control panel. According to the keyboard, provided by the invention, all the keys are mutually independent, the use and the maintenance are convenient, and users can change the keyboard layout according to requirements.
Description
Technical field
The present invention relates to electronic information input equipment field, particularly a kind of keyboard.
Background technology
Keyboard is the most frequently used at present is also topmost input equipment, can be input in computing machine by English alphabet, numeral, punctuation mark etc. by keyboard, thus gives an order to computing machine, inputs data etc.
The keyboard that current people use is all fixing keyboard layout, and the keyboard of the QWERTY layout such as generally used, button ESC, button F1, button F2 etc. are placed on the first row, and button Ctrl, button Alt etc. are at bottom line.For some users, often may use some button that interval is distant, existing keyboard can not need to change keyboard layout according to user, operates cumbersome.
In addition for the keyboard of current integrated design, if certain button has been broken, non-professional user cannot keep in repair, and usually needs again to buy a new keyboard, adds the cost that user uses keyboard.
Summary of the invention
In order to solve the problem, the invention provides a kind of keyboard, comprise some independently buttons of master control borad and repertoire;
The both sides that each button is relative arrange an electric interfaces respectively, and each electric interfaces is provided with a grounding ports, one or more signal port, are gone out the often row button on keyboard by described electric interfaces grafting;
Correspondence is often arranged and master control borad described in button arranges an electrical cnnector is often arranged button for grafting; The side that each electrical cnnector is connected with button is provided with a grounding ports, one or more signal port of mating described electric interfaces; By described electrical cnnector, the grounding ports of each button is connected to the ground wire on described master control borad, and the signal port of each button is connected to corresponding signal input port on described master control borad; Wherein, described often row button is the often row button on described keyboard or the often row button on described keyboard;
When certain button is pressed, the electrical cnnector arranged by this button place sends the recognition by pressing keys signal of this button of unique identification to described master control borad.
Wherein, each electrical cnnector inside comprises one or more divider resistance, and the number of described divider resistance is equal with described signal port number; One end of each divider resistance is connected, and it connects the supply voltage of keyboard described in termination, and the other end of each divider resistance connects corresponding signal input port on a road signal port of this electrical cnnector and described master control borad respectively.
Wherein, described in the corresponding electrical cnnector often arranging button, master control borad is also provided with a debug port, for changing the corresponding relation of described recognition by pressing keys signal and keypress function, makes described electrical cnnector be suitable for connecting any row's button.
Wherein, the inside of each button comprises a switch and a built-in resistor; The first end of built-in resistor described in first termination of described switch, connects the grounding ports of this button left and right sides electric interfaces in the second end of described switch, connect the same road signal port of this button left and right sides electric interfaces in the second end of described built-in resistor;
Wherein, the resistance connecing the built-in resistor of the button of same road signal port is often arranged in button different.
Wherein, each electric interfaces and each electrical cnnector are provided with two paths of signals port; Connect the first via signal port of this button left and right sides electric interfaces in the second end often arranging the built-in resistor of a part of button in button, in the second end of the built-in resistor of residue button, connect the second road signal port of this button both sides electric interfaces.
Wherein, if the built-in resistor of certain two or more button and its second end in connect electrical cnnector corresponding to signal port divider resistance between dividing ratios identical, then these buttons are for replacing button.
Wherein, button can be replaced at keytop to be marked with the symbol of the button that can replace.
Wherein, be marked with mark with row's keytop on same position, the mark of different row's button is different.
Wherein, can any switching laws with the connection order between row's button.
The beneficial effect of the embodiment of the present invention is: keyboard provided by the invention, each button is separate, the mode of grafting is adopted to be connected, Optional assembling can be dismantled arbitrarily easily, when a certain button breaks down, do not need to change whole keyboard, as long as change the button broken down, be user-friendly to and keep in repair.And connect order with the front and back between a line button or each button of same row key inside can change arbitrarily, any a line can be connected to by full line with a line button, or same row button permutation can be connected to any row, function can not change because of change in location, user can as required or use habit freely change the layout of keyboard.In a preferred embodiment, alternative button is set in different rows or different lines button, if certain button is abnormal, can replaces using by certain alternative button infrequently used being arranged in other row or column of Interim use.
Accompanying drawing explanation
The structural representation of the keyboard that Fig. 1 provides for the embodiment of the present invention; Wherein Fig. 1 (a) structural representation of embarking on journey for button is interconnected; The structural representation that Fig. 1 (b) is in column for button is interconnected;
The inner structure schematic diagram of the master control borad of the keyboard that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the internal circuit diagram of the electrical cnnector 1 shown in Fig. 1;
Fig. 4 is the internal circuit diagram of a button in the first row that illustrates of Fig. 1 (a);
To go together in the keyboard that Fig. 5 provides for the embodiment of the present invention keytop line flag schematic diagram;
Keytop schematic symbol diagram can be replaced in the keyboard that Fig. 6 provides for the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The structural representation of the keyboard that Fig. 1 provides for the embodiment of the present invention.Wherein Fig. 1 (a) structural representation of embarking on journey for button is interconnected; The structural representation that Fig. 1 (b) is in column for button is interconnected.
As shown in Fig. 1 (a), the keyboard that the embodiment of the present invention provides comprises some independently buttons of master control borad 110 and repertoire, as button ESC, and button F1 etc.
The left side of each button is provided with electric interfaces 131, and right side is provided with electric interfaces 132, and the electric interfaces of a button left side (right side) side can be connected with the electric interfaces of any one the button right side (left side) side.Such as, on the right side of button ESC, electric interfaces 132 can be connected with electric interfaces 131 on the left of button F1, also can be connected with electric interfaces 131 on the left of button F2.Electric interfaces 131 and electric interfaces 132 can be the male and a female that match, can combine mutually and be plugged together.
In the present embodiment, master control borad 110 is placed in the left end of keyboard, the right side of master control borad 110 is provided with some electrical cnnectors 120, and the number of electrical cnnector equals the line number of keyboard, and electrical cnnector 120 can be connected with the electric interfaces 131 on the left of arbitrary button.After connection grafting in left and right becomes a line successively with a line button, connect electrical cnnector corresponding to this row 120 by the electric interfaces 131 on the left of the button of this row high order end.Such as, after the left and right such as the first row button ESC, F1, F2, F3 connection is in a row, the electric interfaces 131 on the left of button ESC connects electrical cnnector 1.Each button is separate, adopts the mode of grafting to be connected, can dismantle Optional assembling arbitrarily easily, when a certain button breaks down, not need to change whole keyboard, as long as change the button broken down, be user-friendly to and keep in repair.
As shown in Fig. 1 (b), in another embodiment of the present invention, the upside of each button is provided with electric interfaces 132, right side is provided with electric interfaces 131, the electric interfaces of a upper (lower) side of button can with under any one button (on) electric interfaces of side is connected.Such as, on the downside of button ESC electric interfaces 131 can with button
-upside electric interfaces 132 is connected, and also can be connected with electric interfaces 132 on the upside of button Tab.Electric interfaces 131 and electric interfaces 132 can be the male and a female that match, can combine mutually and be plugged together.
Master control borad 110 is placed in the top of keyboard, and the downside of master control borad 110 is provided with some electrical cnnectors 120, and the number of electrical cnnector equals the columns of keyboard, and electrical cnnector 120 can be connected with the electric interfaces 132 on the upside of arbitrary button.Same row button connects after grafting becomes row successively up and down, is connect the electrical cnnector 120 of this row correspondence by the electric interfaces 132 on the upside of these row button topmost.
Two kinds of keyboard structures that Fig. 1 (a) and Fig. 1 (b) illustrates respectively are only different on arrangement mode, principle is identical, and the button only illustrated for Fig. 1 (a) is below interconnected the keyboard structure of embarking on journey so that the embodiment of keyboard provided by the invention to be described.
The inner structure schematic diagram of the master control borad of the keyboard that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, master control borad comprises multiple signals input port, as A/D1, A/D2 etc., button is interconnected mutual coupling in a row and connects, then be finally connected on the signal input port of master control borad a certain road by electrical cnnector, when certain button is pressed, send an identification signal by signal input port to master control borad 110, master control borad 110 can judge the function of the button be pressed according to this identification signal, that be such as pressed is button ESC or that be pressed is button F1 etc.If a line button is all connected on same signal input port, may because the too close identification that makes the mistake of identification signal sent with each button of a line, therefore preferably, in keyboard provided by the invention, multiple signals input port can be connect in each electrical cnnector inside.
Below for electrical cnnector 1 shown in Fig. 1 and the first row button, internal circuit configuration and the principle of work of electrical cnnector and button in the embodiment of the present invention is described.Fig. 3 is the internal circuit diagram of the electrical cnnector 1 shown in Fig. 1.Fig. 4 is the internal circuit diagram of a button in the first row that illustrates of Fig. 1 (a); As Fig. 3, Fig. 4 jointly shown in, in this embodiment, each electrical cnnector inside is provided with two bars transmission lines, connects signal input ports different on master control borad respectively.Such as, electrical cnnector 1 inside is provided with two bars transmission lines, meet signal input port A/D1 and AD/2 on master control borad respectively, electrical cnnector 1 inside comprises resistance R1 and resistance R2, power supply VCC is met after the first end of resistance R1 is connected with the first end of resistance R2, second end of resistance R1 and second end of resistance R2 meet signal input port A/D1 and signal input port AD/2 respectively, are also provided with a ground path in electrical cnnector 1.Corresponding, the inside of the arbitrary button in the first row button be connected with electrical cnnector 1 is also provided with two bars transmission lines and a ground wire, key inside comprises a K switch and a built-in resistor R3, the first end of the first termination built-in resistor R3 of K switch, the ground wire in button is connect, wherein one in the second termination two bars transmission line of built-in resistor R3 in second end of K switch.
When a button is connected to electrical cnnector 1, the signal transmission line that two bars transmission lines of key inside are inner corresponding to electrical cnnector 1 is connected, and the built-in resistor R3 of button connects with the resistance R1 of electrical cnnector 1 inside or resistance R2.Built-in resistor R3 such as shown in Fig. 4 is connected to the signal transmission line corresponding with signal input port A/D1, when this button is pressed, K switch closes, now resistance R3 passes through K switch ground connection after connecting with resistance R1, resistance R3 and resistance R1 dividing potential drop, the magnitude of voltage of second end of resistance R1 is delivered to by this bars transmission line in the signal input port A/D1 on master control borad.In the present embodiment, the built-in resistor R3 receiving each button on signal input port A/D1 is designed to different resistances, when such different key is pressed, because built-in resistor R3 is different, resistance R3 is different from the dividing potential drop of resistance R1, and the voltage signal be delivered on the signal input port A/D1 on master control borad is also different, and master control borad can identify the function of the button be pressed according to different magnitudes of voltage, such as this button is esc key, or this button is F1 key etc.
Receive on electrical cnnector 1 after each button is interconnected, the each button built-in resistor R3 received on the signal input port of same road is in parallel, each button partial pressure value does not affect each other, be equivalent to and each button is directly connected on electrical cnnector 1, therefore connect order with the left and right between a line button can change arbitrarily, function does not have impact.Such as, the magnitude of voltage supposing button ESC built-in resistor R3 dividing potential drop is 1.2V, receive signal input port A/D1, button esc key pendulum is in the optional position of colleague, as long as press this button, its partial pressure value is all 1.2V, and function can not change because of change in location, user can as required or use habit freely change the layout of keyboard.
In the present embodiment, each electrical cnnector inside is provided with two bars transmission lines, connects signal input ports different on master control borad respectively.In fact, an electric coupler inside only can arrange a bars transmission line, receive a signal input interface on master control borad, the inside of each button also only arranges a bars transmission line, electric coupler inside only includes a resistance, each button and this electric resistance partial pressure, be transferred to corresponding signal input port on master control borad by the voltage signal obtained.Same road signal input port needs identification one full line button, can strengthen the difficulty of master control borad key range like this, increases the complexity of master control borad internal hardware and software.In addition, due to the impact of internal and external factors, there is error in the identification signal of each button, if a road signal input port key range quantity is too much, the identification signal difference between each button will be too small, may cause identification error.Each electrical cnnector inside also can arrange more than two bars transmission lines, connect signal input ports different on master control borad respectively, can arrange arbitrarily according to actual needs, just signal transmission line is too much unsuitable, too much can increase the complexity of master control borad internal hardware and software equally.Therefore the present embodiment preferably arranges two bars transmission lines in each electrical cnnector inside, connects signal input ports different on master control borad respectively.
In the present embodiment, the built-in resistor R3 of button can meet signal port A/D1, also signal port A/D2 can be met, connected mode is arbitrary, can set as required, be positioned in preferred the first row button in this programme first half by keyed jointing signal port A/D1, be positioned at latter half by keyed jointing signal port A/D2.Above-mentioned explanation is for the first row button shown in Fig. 1 and electrical cnnector 1, and other row buttons are identical with principle of work with corresponding electrical cnnector internal circuit configuration, repeat no more.
As shown in Figure 1, master control borad 110 is also provided with some debug port 140, the corresponding electrical cnnector 120 of each debug port 140.The software connection attribute of master control borad 110 inside can be changed by debug port 140, such as, in script software definition electrical cnnector 1, the voltage signal of Article 1 signal transmission line transmission 1.2V represents keypress function is esc key, Article 1 signal transmission line in definition electrical cnnector 1 can be changed into by debug port 1 to transmit the voltage signal of 1.2V to represent keypress function be digital 1 key, the definition of whole the first row button can be changed by debug port 1, such electrical cnnector 1 just can connect any a line button, such as the second row button shown in Fig. 1 can be connected to electrical cnnector 1, the function of button remains unchanged, meet the needs of User Defined key arrangement further.
To go together in the keyboard that Fig. 5 provides for the embodiment of the present invention keytop line flag schematic diagram.As shown in Figure 5, because the keyboard that the embodiment of the present invention provides be detachable can combination in any, in order to avoid user is put into the button not originally being same a line the mistake that same a line may cause because of carelessness, in a preferred embodiment provided by the invention, user is made to find colleague's button fast by adding tick marks on the fixed position of button.Such as, add mark in the lower right corner of button, as long as marking identical is exactly the button of same a line, at the lower right corner of ESC capable all buttons interpolation mark 1,
-mark 2 etc. is added in the lower right corner of all buttons of row.
Keytop schematic symbol diagram can be replaced in the keyboard that Fig. 6 provides for the embodiment of the present invention, as shown in Figure 6, in another preferred embodiment of the invention, the built-in resistor of each button relative to different rows same position in QWERTY keyboard is arranged to identical resistance, such as button ESC, button
-, button Tab, the resistances such as button CapsLock are identical, being defined by dividing potential drop of the function of each button, so the identical button dividing potential drop of these built-in resistor sizes too, the button that these inner structures are identical just can substitute mutually.Such as can by button
-be arranged on the first row, when pressing this button, keypress function is ESC.If certain button is abnormal, can replace using by certain alternative button infrequently used being positioned at other row of Interim use, such as button 3 and button E key are alternative buttons, if button 3 is bad, just can replace with button E.In order to user is convenient to find out the button that can substitute mutually, in the preferred embodiment, mark is added in the fixed position of alternative keytop, such as button ESC, button
-be alternative button with button Tab, add mark in the button ESC upper left corner
-, at button
-mark Tab is added in the upper left corner, represents that these buttons all can substitute mutually.
Foregoing is interconnected for the button that Fig. 1 (a) illustrates the embodiment that the keyboard structure of embarking on journey illustrates keyboard provided by the invention, be equally applicable to the button that Fig. 1 (b) illustrates and be interconnected keyboard structure in column, principle is identical, repeats no more.
In sum, keyboard provided by the invention, compared with prior art, has following beneficial effect:
1, keyboard provided by the invention, each button is separate, adopts the mode of grafting to be connected, Optional assembling can be dismantled arbitrarily easily, when a certain button breaks down, not need to change whole keyboard, as long as change the button broken down, be user-friendly to and keep in repair.
2, keyboard provided by the invention, connect order with the front and back between a line button or each button of same row key inside can change arbitrarily, any a line can be connected to by full line with a line button, or same row button permutation can be connected to any row, function can not change because of change in location, user can as required or use habit freely change the layout of keyboard.
3, keyboard provided by the invention, arranges alternative button in different rows or different lines button, if certain button is abnormal, can replace using by certain alternative button infrequently used being arranged in other row or column of Interim use.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (9)
1. a keyboard, is characterized in that, described keyboard comprises some independently buttons of master control borad and repertoire;
The both sides that each button is relative arrange an electric interfaces respectively, and each electric interfaces is provided with a grounding ports, one or more signal port, are gone out the often row button on keyboard by described electric interfaces grafting;
Correspondence is often arranged and master control borad described in button arranges an electrical cnnector is often arranged button for grafting; The side that each electrical cnnector is connected with button is provided with a grounding ports, one or more signal port of mating described electric interfaces; By described electrical cnnector, the grounding ports of each button is connected to the ground wire on described master control borad, and the signal port of each button is connected to corresponding signal input port on described master control borad; Wherein, described often row button is the often row button on described keyboard or the often row button on described keyboard;
When certain button is pressed, the electrical cnnector arranged by this button place sends the recognition by pressing keys signal of this button of unique identification to described master control borad.
2. keyboard as claimed in claim 1, it is characterized in that, each electrical cnnector inside comprises one or more divider resistance, and the number of described divider resistance is equal with described signal port number; One end of each divider resistance is connected, and it connects the supply voltage of keyboard described in termination, and the other end of each divider resistance connects corresponding signal input port on a road signal port of this electrical cnnector and described master control borad respectively.
3. keyboard as claimed in claim 2, it is characterized in that, described in the corresponding electrical cnnector often arranging button, master control borad is also provided with a debug port, for changing the corresponding relation of described recognition by pressing keys signal and keypress function, makes described electrical cnnector be suitable for connecting any row's button.
4. keyboard as claimed in claim 3, it is characterized in that, the inside of each button comprises a switch and a built-in resistor; The first end of built-in resistor described in first termination of described switch, connects the grounding ports of this button left and right sides electric interfaces in the second end of described switch, connect the same road signal port of this button left and right sides electric interfaces in the second end of described built-in resistor;
Wherein, the resistance connecing the built-in resistor of the button of same road signal port is often arranged in button different.
5. keyboard as claimed in claim 4, it is characterized in that, each electric interfaces and each electrical cnnector are provided with two paths of signals port; Connect the first via signal port of this button left and right sides electric interfaces in the second end often arranging the built-in resistor of a part of button in button, in the second end of the built-in resistor of residue button, connect the second road signal port of this button both sides electric interfaces.
6. keyboard as claimed in claim 4, is characterized in that, if the built-in resistor of certain two or more button and its second end in connect electrical cnnector corresponding to signal port divider resistance between dividing ratios identical, then these buttons are for replacing button.
7. keyboard as claimed in claim 6, is characterized in that, button can be replaced at keytop to be marked with the symbol of the button that can replace.
8. the keyboard as described in any one of claim 1-7, is characterized in that, is marked with mark with row's keytop on same position, and the mark of different row's button is different.
9. keyboard as claimed in claim 8, is characterized in that, can any switching laws with the connection order between row's button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023488.0A CN105425975B (en) | 2015-12-30 | 2015-12-30 | A kind of keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023488.0A CN105425975B (en) | 2015-12-30 | 2015-12-30 | A kind of keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105425975A true CN105425975A (en) | 2016-03-23 |
| CN105425975B CN105425975B (en) | 2018-05-04 |
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ID=55504231
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511023488.0A Active CN105425975B (en) | 2015-12-30 | 2015-12-30 | A kind of keyboard |
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| CN (1) | CN105425975B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040155868A1 (en) * | 2003-02-10 | 2004-08-12 | Hui Cheuk Fai Howard | Devices, apparatus and appliances with location reconfigurable input keys |
| CN102646535A (en) * | 2012-05-14 | 2012-08-22 | 屈志英 | Keyboard with detachable and randomly-arranged keys |
| CN202512520U (en) * | 2012-03-23 | 2012-10-31 | 苏州本控电子科技有限公司 | Key array input device |
| CN104035575A (en) * | 2014-07-06 | 2014-09-10 | 潘爱松 | Keyboard with key layout capable of being changed at will |
| CN205450975U (en) * | 2015-12-30 | 2016-08-10 | 青岛歌尔声学科技有限公司 | Keyboard |
-
2015
- 2015-12-30 CN CN201511023488.0A patent/CN105425975B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040155868A1 (en) * | 2003-02-10 | 2004-08-12 | Hui Cheuk Fai Howard | Devices, apparatus and appliances with location reconfigurable input keys |
| CN202512520U (en) * | 2012-03-23 | 2012-10-31 | 苏州本控电子科技有限公司 | Key array input device |
| CN102646535A (en) * | 2012-05-14 | 2012-08-22 | 屈志英 | Keyboard with detachable and randomly-arranged keys |
| CN104035575A (en) * | 2014-07-06 | 2014-09-10 | 潘爱松 | Keyboard with key layout capable of being changed at will |
| CN205450975U (en) * | 2015-12-30 | 2016-08-10 | 青岛歌尔声学科技有限公司 | Keyboard |
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|---|---|
| CN105425975B (en) | 2018-05-04 |
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