CN102778958B - Touch induction keyboard and control method thereof - Google Patents
Touch induction keyboard and control method thereof Download PDFInfo
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- CN102778958B CN102778958B CN201210253616.0A CN201210253616A CN102778958B CN 102778958 B CN102778958 B CN 102778958B CN 201210253616 A CN201210253616 A CN 201210253616A CN 102778958 B CN102778958 B CN 102778958B
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Abstract
Touch induction keyboard of the present invention, comprise base, be arranged in the matrix switch film being formed by some switch elements according to keyboard layout setting on base, and be positioned at matrix switch film top and control with correspondence for stressed ascending, descending some key devices of the switching of each switch element, described key device comprises the press section that offers user and implement pressing operation, between the press section of described key device and described matrix switch film, be provided with for the capacitive sensing rete at the outside people's body medium of described keyboard layout scope internal induction; This keyboard is provided with control module, for identifying the on off operating mode of any switch element; Variation for the current signal by detecting described capacitive sensing rete detects described outside people's body medium keyboard layout of living in position. The present invention also provides the control method of this touch induction keyboard. Touch induction keyboard area occupied of the present invention is little, realizes keyboard input and two kinds of functions of touch sensible input on same keyboard layout simultaneously.
Description
[technical field]
The present invention relates to a kind of keyboard, relate in particular to a kind of touch induction keyboard and control method thereof.
[background technology]
Capacitance touch induction technology is a kind of by the change to touch sensor capacitance of human bodyChange, thereby a kind of technology of definite human body (as finger) position that is close to sensor is widely used inPortable equipment. For bench device, be simply assembled in widely a side of keyboard, complete wordInput and host computer control function.
On the one hand, owing to being limited by the size of finger, for reaching input flexibly and fast, pressing on keyboardThe area of key can not infinitely dwindle. On the other hand, for reaching good operating experience, be integrated in keyboard oneThe touch pad of side needs larger area. Meet above 2 user's requests and design and produce the band touch formingThe keyboard of plate, certainly will possess very large area. For the miniaturization of input equipment brings obstacle.
Meanwhile, touch pad must be realized point selection function. Traditional way is, logical family software algorithm control is rightThe touching in short-term of finger judges, and the signal that clicks corresponding to generation notified main frame.
Industry do not have always way meet simultaneously user's touch-control area large, occupy little space and to click action clearClear demand.
Button on known keyboard, is supported on keyboard substrate by key lifting structure, described in being built-in with and being subject toThe contact switch of key lifting structure effect, sends and clicks signal to main frame by the conducting of this contact switch,Selecting of key lifting structure is very diversified, comprises traditional scissor, guide colume type and double-open type etc.,Be more common in various countries' patent documentation. Known touch pad, adopts axial coordinate matrix form capacitance sensor to realize,Realizing position by detecting the capacitance variation that X moves towards and the capacitance sensor of Y trend forms passesSense. Also be more common in prior art. In prior art, several onrelevants of keyboard and touch pad.
[summary of the invention]
The object of the invention is to improve above-mentioned deficiency, a kind of touch induction keyboard is provided, meet keyboard defeatedEnter and touch the demand of input, and guarantee that this keyboard grabbing space minimizes with touch-control area and maximize.
Another object of the present invention is to provide a control method that is applicable to aforementioned touch induction keyboard.
For realizing object of the present invention, the present invention adopts following technical scheme:
Touch induction keyboard of the present invention, comprises base, is arranged on base and arranges according to keyboard layoutThe matrix switch film being formed by some switch elements, and be positioned at matrix switch film top for stressedSome key devices of the switching of each switch element are controlled in ascending, descending with correspondence, described key device comprisesOffer the press section that user implements pressing operation, wherein:
Between the press section of described key device and described matrix switch film, be provided with at described keyboardThe capacitive sensing rete of the outside people's body medium of layout scope internal induction;
This keyboard is provided with control module, for identifying the on off operating mode of any switch element; For passing through inspectionSurvey described capacitive sensing rete current signal variation and detect described outside people's body medium keyboard cloth of living inOffice position.
Realize touch sensible by mutual capacitance mode, described capacitive sensing rete has double-layer structure, every layerStructure includes multiple conductors that parallel setting, and double-layer structure is with the axis of the longitudinally of conductor each otherOrthogonal arranging arranges to form respectively abscissa and the ordinate of keyboard layout, and the position of different layers is correspondingConductor between be formed for responding to the capacitance inductor of outside people's body medium, outside people's body medium is closeWhen this capacitance inductor, cause the curent change of the conductor at this capacitance inductor place, described controlUnit is known in outside people's body medium keyboard layout of living in by the conductor current variation that detects different layersPosition.
In one embodiment of the present invention, described each conductor is integrated the wire metalwork of extension, correspondenceUnder the press section of each key device, the every one deck in this double-layer structure all has two strip metal part warpsUnder crossing this, locate.
In another embodiment, described each conductor by some rhombus conducting strips along diagonal serial connection andBecome, between the multiple conductors in same layer structure, parallel setting with described diagonal, double-layer structure is with thatThe orthogonal setting of arranging of described diagonal of this conductor. Under press section corresponding to each key device,Every one deck in this double-layer structure all has two conducting strips to locate under being positioned at least in part this.
Realize touch sensible by self-capacitance mode, described capacitive sensing rete has double-layer structure, every layerStructure includes multiple conductors that parallel setting, and double-layer structure is with the axis of the longitudinally of conductor each otherOrthogonal arrange arrange to form respectively abscissa and the ordinate of keyboard layout, the adjacent conductor of same layer itBetween be formed for responding to the capacitance inductor of outside people's body medium, outside people's body medium is near this condenser typeWhen inductor, cause the curent change of the conductor at this capacitance inductor place, described control module passes throughDetect the conductor current variation of different layers and know the position in outside people's body medium keyboard layout of living in.
Concrete, described each conductor is formed along diagonal serial connection by some rhombus conducting strips, sameBetween multiple conductor of layer in structure, parallel setting with described diagonal, double-layer structure is with conductor each otherThe orthogonal setting of arranging of described diagonal. Under press section corresponding to each key device, this two-layer knotEvery one deck in structure all has two conducting strips to locate under being positioned at least in part this.
Further, described control module is connected with a mode switch element, and this mode switch element limitsDescribed control module for identify the position of described outside people's body medium keyboard layout of living in and/or for knowOther user is by pressing the uniqueness characteristic letter of the switch element of one of any institute's conducting in described key deviceBreath.
Described key device comprises elastic component, lifting structure and the described press section of contact-carrying, described bulletProperty part is positioned on described matrix switch film corresponding to a switch element, and described lifting structure is used forGuide the lifting of described press section with respect to described base, described press section offers user and presses behaviourDo, in the time that user presses, press section conflict described elastic component and drive elastic component sink open with described in conductingClose element, when user presses while cancelling, elastic component resets and disconnects described switch element.
Between described matrix switch film and the press section of described key device, from the bottom to top according to level settingAs lower component: play fixed bearing effect upper cover, as described in capacitive sensing rete, diaphragm.
Touch sensitive key disk control method of the present invention, it comprises the steps:
(1) provide the superjacent air space of the each key device arranging according to keyboard layout for outside people's body mediumCarry out move operation;
(2) utilizing the capacitive sensing rete being preset within the scope of keyboard layout to detect described outside human body is situated betweenMatter is residing position in keyboard layout;
(3) identify described positional information by a control module, generate corresponding signal output.
In one embodiment of the invention, the method also comprises the steps:
(4) control module is preset in each on the matrix switch film within the scope of keyboard layout by detectionWhether the conducting of individual switch element identifies pressing that described outside people's body medium implements certain key deviceOperation;
(5) identify the conducting state of described switch element by described control module and at one of switch elementWhile being switched on, produce the outside people's body medium of sign and carry out the touch-control instruction output of touch control operation.
In another embodiment of the present invention, the method also comprises the steps:
Control module is by detecting the lasting duration after the curent change of each conductor in double-layer structure, this timeWhile reaching pre-set threshold value, or control module is by detecting the generation secondary change of each conductor in double-layer structureTime, produce the outside people's body medium of sign and carry out the touch-control instruction output of touch control operation.
Compared with prior art, tool of the present invention has the following advantages:
First, the present invention by capacitive sensing rete organic combination in traditional keyboard layout, with keyboard clothOffice is as maximum touch sensible area scope, and if desired can be by keyboard operation or fingerHover operation is converted into the click instruction corresponding with touch location, makes keyboard to realize button defeatedEnter, can also realize the input of large area touch sensible, needn't for keyboard, touch pad be set separately again.
Secondly, adapt to the particularity that in keyboard layout, button is arranged, two-layer to it in capacitive sensing reteStructure adopts the form of carrying out orthogonal coupling taking diagonal as axle to realize capacitance inductor, and structure is closedReason, is easy to correspondingly with each keyboard better, and can simplify connection complexity.
Moreover the present invention, by further configuration mode switch unit, can touch according to actual needs controlTouch induction keyboard in homoatomic chain dish input state, pure touch sensible input state, and both mixed states.
[brief description of the drawings]
Fig. 1 is the package assembly schematic diagram of touch induction keyboard of the present invention;
Fig. 2 is the vertical middle cutaway view after touch induction keyboard of the present invention is removed by part;
Conductor cloth in the capacitive sensing rete that Fig. 3 adopts for touch induction keyboard the first embodiment of the present inventionOffice's schematic diagram, wherein capacitance inductor forms in the mode of mutual capacitance;
Conductor cloth in the capacitive sensing rete that Fig. 4 adopts for touch induction keyboard the second embodiment of the present inventionOffice's schematic diagram, wherein capacitance inductor forms in the mode of mutual capacitance.
[detailed description of the invention]
Below in conjunction with drawings and Examples, the present invention is further illustrated:
Touch induction keyboard of the present invention, for accepting user's operation, is converted to input letter by user's operationAfter number, be transferred to the terminal device such as personal computer, notebook computer, super utmost point basis.
Refer to Fig. 1 and Fig. 2, touch induction keyboard of the present invention, is physically made up of sandwich construction,Comprise successively base 1, matrix switch film 2, upper cover 3, capacitive sensing rete 4 from bottom to top,, protectCuticula 5 and according to multiple key devices of default keyboard layout arranged (not label), in addition,Touch induction keyboard also should possess the essential control circuit part of known keyboard, for example control module 8(consulting Fig. 5), wireless signal transmission circuit, acousto-optic warning circuit etc. that can arrangement.
Described base 1, forms a receiving space 10 for assembling aforementioned remaining part, this receiving space10 have occupied almost whole base 1, and, only to realize touch sensing function opinion, this receiving space 10Can add again the touch pad of any standalone configuration.
Described matrix switch film 2, its structure and technology realize and are more common in prior art, pardon not all right superfluousState. This matrix switch film 2 is in like manner according to default keyboard layout, and the mode of arranging with matrix is provided withMultiple switch elements (not label diagram), the conducting of each switch element all causes producing a uniquenessCharacteristic information, for example, when one of them switch element is switched on, the conducting of this switch element can be by keyboardControl module 8 identify, will produce finally for characterizing the signal of character " a ", and by this control listUnit 8 is converted to input signal output. And wherein, the conducting controlled unit 8 of this switch element is identified,Control module 8 is rely and is identified it for characterizing signal characteristic of character " a ", is described uniqueness characteristic letterBreath. According to this uniqueness characteristic information, not only can determine that user's input is expressed, can also be by keyboardLayout is considered as coordinate system, residing position while determining user's finger presses.
Described key device, according to keyboard layout design number arrange, its number naturally also with instituteThe switch element number of stating matrix switch film 2 is substantially corresponding (generally corresponding one by one, but can be alsoCorresponding two switch elements of key device, as space bar). Be born evolution afterwards in decades from keyboard,Its structure is also varied, typically just like scissor support, double-open type support and flexible pillar type knotStructures etc., are more common in patent documentation, these can be summarised as to liter for the structure of guiding key device liftingStructure is fallen, to facilitate follow-up explanation. Concrete, described key device comprise offer user implement byThe press section 77 of press operation, for the contact-carrying of the switch element of the described matrix switch film 2 of conflicting710 elastic component 71 and as previously mentioned, for guiding the liter of described press section 77 or falling to act onDescribed elastic component 71, finally causes the corresponding switch element of elastic component 71 to be pressed conducting by contact 710Or the lifting structure turn-offing. In the present embodiment, adopt flexible pillar type structure for realizing the liter of key deviceStructure is fallen. In brief, each key device is positioned at matrix switch film 2 tops, for stressed ascending, descendingWith the switching of each respective switch element in corresponding gating matrix switch film 2. By the structure of key deviceKnown, key device from bottom to top, comprises elastic component 71, lifting structure and press section 77 successively, allThe elastic component 71 of key device is arranged on matrix switch film 2, strictly corresponding to each switch elementPosition position, thereby, can be understood as elastic component 71 and in physical arrangement, have one deck of one's own, this onlyBe only for the convenience of understanding is illustrated, should be considered as limitation of the present invention.
Above described matrix switch film 2, be elastic component 71, elastic component 71 tops install described onLid 3. Described upper cover 3 is for realizing and being fastened and connected on edge each other with described base 1, certainly alsoCan take other mounting means including screw lock, and upper cover 3 bottoms arrange some for conflictingThe floor 31 of base 1 so as to maintain upper cover 3 and base 1 between firm installation. Obviously, upper cover 3And the degree of depth (highly) of the receiving space 10 between base 1 can arrange flexibly, as long as setBoth fixed positions in short transverse.
But for the present embodiment, described upper cover 3 is not only used as fixture, go back and button simultaneouslyDevice matches, and serves as the effect of a part for the lifting structure of this key device. Particularly, forGuarantee the installation of key device, need to arrange corresponding to the position of switch element described in each at upper cover 3Through hole (be guided post 73 is full of and not label), and in 77 bottom surfaces, press section of described key device,Guide posts 73 is set. The press section of key device 77 is placed in to described upper cover 3 top location, press sectionThe corresponding described through hole of guide posts 73 process of 77 bottom surfaces is to pass upper cover 3, the described elastic component of finally conflicting71. Thus, the guiding that coordinates by described guide posts 73 with through hole, phase just can be realized in press section 77For the lifting action of base 1, in the time that being subject to user's institute's externally applied forces and sinking, it forces elastic component 71Decline to conflict and the corresponding switch element of conducting, in the time that user's external force is removed, elastic component 71 self returns to be releasedMasterpiece is for described guide posts 73, and press section 77 is just recoiled to original position. Obviously, even realizeGuide posts 73 coordinates itself with through hole, also might not depend on this through hole is set in upper cover 3Realize, allow described guide posts 73 and independently cylindrical hole can be set in the scope of this through hole againLifting and realizing.
The top of described upper cover 3, the set through hole in the position of corresponding switch element described in eachTop, is provided with the body of wall 33 for lengthening vertically this through hole, and the setting of this body of wall 33, after being convenient toContinue location on upper cover 3 described capacitive sensing rete 4 and diaphragm 5 are set.
Described capacitive sensing rete 4, adopts double-layer structure realization is set on a film two sides, and,Each body of wall 33 on capacitive sensing rete 4 above corresponding described upper cover 3 arranges and allows body of wall 33 logicalThe through hole 40 of crossing, to be set to upper cover 3 top places by capacitive sensing rete 4 covers.
There are self-capacitance and two kinds of implementations of mutual capacitance for the capacitive sensing rete 4 of realizing touch pad, realThe key of existing touch controllable function is to know outside people's body medium in the residing position of touch interface and changes railMark and the touch control operation (instruction) of implementing in a certain position.
In the present invention, preferably mutual capacitance mode. The electricity of detailed described capacitive sensing rete 4 as shown in Figure 3Road principle schematic. Every one deck in the double-layer structure of described capacitive sensing rete 4, is equipped with and keyboardLongitudinally becomes the conductor 41 or 42 of 45 or-45 degree tilt relationships, and these conductors 41,42 are by rhombusConducting strip 44 is connected in series and forms in diagonal, but forms each conducting strip of same conductor 41,4244 itself diagonal and needn't be in line, be mainly following adjacent in order to adapt in keyboard layoutBetween keyboard and keyboard press section 77 each other, be not into the feature that diagonal overlaps, can guarantee so everyCorresponding one group of conducting strip 44 in the same way under the press section 77 of one keyboard. Form thusEvery one deck in double-layer structure, multiple conductors 41 or 42 that it comprises, are all parallel relation, canBe considered as paralleling setting with the diagonal of the conducting strip 44 in each conductor 41,42. And double-layer structure respectivelyBe arranged on the positive and negative of film, because differential seat angle is each other 90 degree, therefore, double-layer structure (with reference to 41,42) each conductor of in 41 and another each conductor 42 relation of arranging that is just orthogonal, like this,Wherein the conductor in one deck structure can form abscissa, and the conductor in another layer of structure forms horizontal seatMark, double-layer structure just builds a coordinate system. The setting of double-layer structure, just makes pressing of key deviceUnder portion 77, be provided with four conducting strips 44, respectively have two conducting strips 44 to belong to respectively double-layer structure,Under four conducting strips 44 equal some and press section 77, projection intersects, and with other conduction44 one-tenth of sheet are non-overlapping without interfering setting without intersecting. The shape of conducting strip 44 can adopt sensu latoRhombus design, so-called sensu lato rhombus, refers to that it has comprised square. Several key device institutes aroundSurround corresponding two groups of conducting strips that belong to respectively double-layer structure under several adjacent press sections 7744, because they respectively have the connecting portion (not shown) that is roughly positioned at its geometric center, thereby, two groups of conductionsThe square geometric center place that sheet 44 forms jointly there will be juxtaposition, but does not contact, thereby shapeBecome parallel capacitance, can form separately capacitance type sensor. And belong to respectively every two phases of double-layer structureAdjacent conducting strip 44 also can form edge capacitance in edge each other, also can form capacitance inductor.By by the conductor layer ground connection in bottom side, add high frequency voltage at the conductor layer place of end face, by described controlUnit scan processed is the curent change of two corresponding conductors of coordinate in length and breadth, when outside people's body medium is as handWhile referring to close to some conducting strip 44 top, those conducting strips 44 and outside people's body medium and correspondingBetween capacitance inductor, form shunt capacitance, thereby cause the electric current of corresponding conductor to change, reallyDetermine to occur in double-layer structure the conductor of curent change and just can determine the residing capacitive sensing film of outside people's body mediumThe position of the coordinate system of layer building, thus determine the position in outside people's body medium keyboard layout of living in. MoreConcrete detection principle can be consulted some known touch sensible control technologys, does not repeat for this reason. Visible, keyEach key device in dish layout, all at least can arrange the capacitance type sensor described in, passes throughCurent change on the conductor that detects the capacitance variations of all capacitance type sensors and cause thus, just canThe residing approximate location of the outside people's body medium of perception. Such design obviously meets mutual capacitance touch sensitive skillThe spirit of art, should be those skilled in the art and understands, but also the particularity based on keyboard layout has been doneAdaptive architecture advances, thereby its structure is more reasonable, can avoid using too much pin.
After sheathed the body of wall 33 of the through hole of capacitive sensing rete 4 40 and described upper cover 3, electric capacity senseAnswer the installation of rete 4 to accuse. In like manner, can be with similar physics below capacitive sensing rete 4The mode pad of perforate is established a circuit substrate (not shown), and above capacitive sensing rete 4 with similar thingThe mode of reason perforate arranges a diaphragm 5.
The press section 77 of described each key device, can be with fixture or alternate manner, first in production technologyAccording to keyboard layout, each press section 77 is linked to be to an independent stratum 6, to complete unified assembling.
Assemble touch induction keyboard of the present invention and be very easily, only need be according to aforesaid structural relation,In layer assembling in succession. Related is principles well-known, pardons not all right repeating.
As for other known circuit structure of keyboard, be mainly its control module 8, can be collected in keyAny space place of dish. Control module 8 needs and matrix switch film 2 and capacitive sensing rete on electric4 are connected, to be switched on by certain switch element in recognition matrix switch film 2 on the one hand, withThe uniqueness characteristic information being switched on this switch element and produce is for externally defeated according to generating an input signalGo out, this switch element is switched on and also can be considered as the touch control operation of user at this place, thereby by control moduleProduce touch-control instruction; On the other hand, by Detection capacitance sensor film 4 because capacitance type sensor is by alsoConnection and the conductor current that causes change to identify outside people's body medium and are arranged in the positional information of keyboard layout,And these positional informations are converted to command information output.
The function of this two aspect of control module 8 also can be decomposed into its different mode of operation, still, and controlThe method that these two kinds of different working modes are realized in unit 8 processed is not limited to aforesaid announcement. As previously mentioned,Capacitive sensing rete 4 itself has built a coordinate system, thereby, release recently with reference to Sony" floatingtouch " technology, can utilize the hovering of outside people's body medium above keyboard layout timeLong (respective conductors obtains continuing the relatively constant electric current of certain time length) or unexpected stretching (make correspondingThere is secondary change in the electric current of conductor suddenly) these two kinds of modes determine that outside people's body medium is in this positionTouch control operation, the press section that not necessarily will press described key device is just considered as producing touch control operation, fromAnd the conducting that can substitute aforesaid switch element operates and makes control module 8 produce touch-control instruction. And it is realThe process of existing this judgement, in like manner can be realized by described control module 8. Visible, in the present invention, controlThe mode that different working modes is realized in unit 8 processed is flexibly.
By the realization of control module 8 inside, or by a mould being connected with control module 8 is setFormula switch unit (not shown), can further enrich the function of touch induction keyboard of the present invention. Concrete andSpeech, by described mode switch element, can provide a machinery or capacitance-type switch to user, by userThe mode of operation of described control module 8 is set, for example, when machinery or capacitance-type switch are in the first stateTime, mode switch element just provides parameter setting, and control module 8 is operated in accordingly only for receivingThe state of key device input, now, 8 of control modules produce only while being responsible for user's key tapOne property characteristic information is converted to character information (as ASCII character) input signal and outwards exports, this stateUnder, keyboard has the most traditional button operation input function; When machinery or capacitance-type switch are in the second shapeWhen state, mode switch element just provides parameter setting, makes control module 8 be operated in and both receive use accordinglyThe input of the uniqueness characteristic information producing when family key tap, receives again outside people's body medium (as userFinger) positional information input, in other words, under this state, control module 8 is constantly by outside human bodyThe positional information of medium is exported as input signal, in the time of user's key tap, also this button is characterizedKeyboard layout in information, the touch-control instruction of position, the character information even characterizing together with this buttonBe converted in the lump input signal output, this state obviously belongs to mixed defeated state; Certainly, also can arrangeThe third state, the uniqueness characteristic letter producing while making control module 8 receive only positional information and knock keyboard(or the outside people's body medium of control module 8 startup identification is to cease corresponding positional information and touch-control instructionNo hovering or the suddenly flexible touch-control instruction to produce), and convert it to input signal output, this shapeUnder state, keyboard role is just equal to traditional touch pad completely.
As previously mentioned, mode switch element both can independently become a functional module, also can be by control module 8 oneAnd realize. Realize except adopting machinery or capacitance switch to be aided with the duty switching of control module 8,Also can intelligence differentiate voluntarily. Particularly, control module 8 can detect the conductor of each layer of structure voluntarilyCurent change, for example, when it has detected multiple conductors (more than 3 or 3, but not limit by this)When electric current generation marked change (as lower than a certain predetermined threshold value), just can automatically be considered as aforesaid the first workMake state, and make control module 8 work in this duty; When control module 8 detects every layer of structureIn while only having the electric current of two conductors to change, just can be considered aforesaid second or the 3rd duty,And make control module 8 work in this duty.
Visible, the setting of mode switch element, has enriched the function of touch induction keyboard, for user providesHommization customization means.
The first embodiment of the present invention of more than setting forth, has fully disclosed touch induction keyboard of the present inventionPhysics and electrical structure, with and operation principle and control method, sequitur touch induction keyboard of the present inventionDepend on the integrated design of touch sensible and keyboard input, can extensively substitute traditional keyboard Designing,It also carries with the shared set area of this keyboard layout when set area is provided in to keyboard layoutSupply touch sensing function.
The second embodiment of touch induction keyboard of the present invention refers to Fig. 4, and it adopts wire metalwork to replaceIn the second embodiment, be connected in series by conducting strip 44 conductor forming, guarantee to have under each key device two-layerThe each two strip metal part processes of structure, the conductor of cross one another upper and lower double-layer structure just can form parallel capacitanceTo use as capacitance inductor, just can realize thus the effect equal with the first embodiment, by controllingThe detection of curent change on conductor is realized in unit 8, so that the positional information of the outside people's body medium of perception.
In the 3rd not shown embodiment of touch induction keyboard of the present invention, described touch induction keyboard adoptsThe mode of self-capacitance realizes described capacitive sensing rete 4, and the difference of itself and the first embodiment is mainlyThe realization difference of electric aspect. Be mainly reflected in its double-layer structure, every layer of structure all utilized adjacent conductorThe edge capacitance that forms of the corresponding conducting strip 44 in position, thereby structure capacitance inductor. For electric capacity senseAnswer rete 4 to apply after high-frequency alternating electric current, whether in every layer of structure, detect the electric current of adjacent two conductorsChange, whether certain position getting final product between these two conductors of perception has outside people's body medium close,Because double-layer structure forms respectively coordinate in length and breadth, detect the curent change of the conductor of double-layer structure and just can determineCertain point in the coordinate system being built by capacitive sensing rete 4 whether exist affect conductor current variation outsidePeople from portion body medium, thereby the position of definite residing keyboard layout of outside people's body medium. Obviously, with certainly electricHold the mode that this mode can substitute self-capacitance completely, realize object of the present invention.
In sum, the present invention uses for reference touch sensible technology ripe in prior art, applies it to biographyIn system keyboard, realize thus touch induction keyboard, touch induction keyboard area occupied is little, at same keyboardIn layout, realize keyboard input and two kinds of functions of touch sensible input simultaneously.
In brief, above embodiment is only in order to illustrate the present invention and unrestricted skill described in the inventionArt scheme; Therefore, although this description has carried out the present invention with reference to each above-mentioned embodiment in detailExplanation, still, those of ordinary skill in the art should be appreciated that still and can repair the present inventionChange or be equal to replacement; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention,It all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. a touch induction keyboard, comprises base, is arranged on base and arranges according to keyboard layoutThe matrix switch film being formed by some switch elements, and be positioned at matrix switch film top for stressedSome key devices of the switching of each switch element are controlled in ascending, descending with correspondence, described key device comprisesOffer the press section that user implements pressing operation, it is characterized in that:
Between the press section of described key device and described matrix switch film, be provided with at described keyboardThe capacitive sensing rete of the outside people's body medium of layout scope internal induction, described capacitive sensing rete has two-layerStructure, every layer of structure includes multiple conductors that parallel setting, and each conductor is by some rhombus conducting stripsForm along diagonal serial connection;
This keyboard is provided with control module, for identifying the on off operating mode of any switch element; For passing through inspectionSurvey described capacitive sensing rete current signal variation and detect described outside people's body medium keyboard cloth of living inOffice position.
2. touch induction keyboard according to claim 1, is characterized in that, described capacitive sensingRete has double-layer structure, and every layer of structure includes multiple conductors that parallel setting, and double-layer structure is with thatOrthogonal the arranging of axis of the longitudinally of this conductor arranges abscissa and vertical seat to the form respectively keyboard layoutMark, is formed for responding to the condenser type sense of outside people's body medium between the corresponding conductor in the position of different layersAnswer device, outside people's body medium during near this capacitance inductor, causes leading of this capacitance inductor placeThe curent change of body, described control module is known outside people by the conductor current variation that detects different layersPosition in body medium keyboard layout of living in.
3. touch induction keyboard according to claim 2, is characterized in that, presses corresponding to eachUnder the press section of key apparatus, the every one deck in this double-layer structure all has two conducting strips at least in partUnder being positioned at this, locate.
4. touch induction keyboard according to claim 1, is characterized in that, described capacitive sensingRete has double-layer structure, and every layer of structure includes multiple conductors that parallel setting, and double-layer structure is with thatOrthogonal the arranging of axis of the longitudinally of this conductor arranges abscissa and vertical seat to the form respectively keyboard layoutMark, between the adjacent conductor of same layer, be formed for responding to the capacitance inductor of outside people's body medium, outerPeople from portion body medium during near this capacitance inductor, causes the electric current of the conductor at this capacitance inductor placeChange, described control module changes and knows outside people's body medium institute by detecting the conductor current of different layersPosition in place's keyboard layout.
5. touch induction keyboard according to claim 4, is characterized in that, presses corresponding to eachUnder the press section of key apparatus, the every one deck in this double-layer structure all has two conducting strips at least in partUnder being positioned at this, locate.
6. according to the touch induction keyboard described in any one in claim 1 to 5, it is characterized in that,Described control module is connected with a mode switch element, and this mode switch element limits described control moduleFor identifying the position of described outside people's body medium keyboard layout of living in and/or for identifying user by pressingPress the uniqueness characteristic information of the switch element of one of any institute's conducting in described key device.
7. according to the touch induction keyboard described in any one in claim 1 to 5, it is characterized in that,Described key device comprises elastic component, lifting structure and the described press section of contact-carrying, described elastic componentBe positioned on described matrix switch film corresponding to a switch element, described lifting structure is for guidingDescribed press section is with respect to the lifting of described base, and described press section offers user and carries out pressing operation,In the time that user presses, conflict described elastic component drive elastic component to sink with switch unit described in conducting of press sectionElement, when user presses while cancelling, elastic component resets and disconnects described switch element.
8. according to the touch induction keyboard described in any one in claim 1 to 5, it is characterized in that,Between described matrix switch film and the press section of described key device, arrange from the bottom to top as follows according to levelParts: play the upper cover of fixed bearing effect, described capacitive sensing rete, diaphragm.
9. a touch sensitive key disk control method, is characterized in that, described touch induction keyboard be asTouch induction keyboard described in claim 1～8 any one, described method comprises the steps:
(1) provide the superjacent air space of the each key device arranging according to keyboard layout for outside people's body mediumCarry out move operation;
(2) control module is preset in each on the matrix switch film within the scope of keyboard layout by detectionWhether the conducting of individual switch element identifies pressing that described outside people's body medium implements certain key deviceOperation;
(3) identify the conducting state of described switch element by described control module and at one of switch elementWhile being switched on, produce the outside people's body medium of sign and carry out the touch-control instruction output of touch control operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253616.0A CN102778958B (en) | 2012-07-20 | 2012-07-20 | Touch induction keyboard and control method thereof |
Applications Claiming Priority (1)
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| CN103309508B (en) * | 2013-06-04 | 2016-05-18 | 珠海市智迪科技股份有限公司 | Realize the electronic touch Apparatus for () and method therefor of file drag function |
| US20150185869A1 (en) * | 2013-12-30 | 2015-07-02 | Google Inc. | Keyboard proximity sensing |
| CN108108116B (en) * | 2014-02-27 | 2021-01-15 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN103885604B (en) * | 2014-03-27 | 2018-02-06 | 珠海市智迪科技股份有限公司 | Ultrathin touch formula keyboard and its key control method |
| CN204695233U (en) * | 2014-07-13 | 2015-10-07 | 胡世曦 | A kind of keyboard with mouse function |
| WO2016075900A1 (en) * | 2014-11-14 | 2016-05-19 | ソニー株式会社 | Input device, sensor, keyboard and electronic instrument |
| CN107958167B (en) * | 2017-12-19 | 2024-01-30 | 林挺意 | Peep-proof password input keyboard and control method thereof |
| CN108563337B (en) * | 2018-04-03 | 2020-03-27 | 京东方科技集团股份有限公司 | Keyboard and terminal with same |
| CN108900185B (en) * | 2018-06-28 | 2022-08-09 | 上海科世达-华阳汽车电器有限公司 | Capacitive touch switch and electronic equipment applying same |
| GB2591841B (en) * | 2019-11-15 | 2022-06-22 | Clevetura Llc | Keyboard |
| CN111180223B (en) * | 2020-01-18 | 2022-05-17 | 惠州华阳通用电子有限公司 | Integrated key switching device |
| CN113641249B (en) * | 2020-05-11 | 2024-04-02 | 重庆达方电子有限公司 | Touch keyboard and keyboard touch electrode module thereof |
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| CN201667058U (en) * | 2009-11-19 | 2010-12-08 | 嘉兴淳祥电子科技有限公司 | Handwriting touch computer keyboard |
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| JP2008533559A (en) * | 2005-02-09 | 2008-08-21 | サーク・コーポレーション | Touchpad integrated into keyboard keycaps to improve user interaction |
| CN201465031U (en) * | 2009-07-08 | 2010-05-12 | 深圳市汇顶科技有限公司 | Combined input device and electronic product comprising same |
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| CN201667058U (en) * | 2009-11-19 | 2010-12-08 | 嘉兴淳祥电子科技有限公司 | Handwriting touch computer keyboard |
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