CN100504731C - Information input device and method for portable electronic device - Google Patents
Information input device and method for portable electronic device Download PDFInfo
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- CN100504731C CN100504731C CNB2005100016617A CN200510001661A CN100504731C CN 100504731 C CN100504731 C CN 100504731C CN B2005100016617 A CNB2005100016617 A CN B2005100016617A CN 200510001661 A CN200510001661 A CN 200510001661A CN 100504731 C CN100504731 C CN 100504731C
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Abstract
The device of inputting information includes following parts: unit for processing touch input, keyboard push button keys, and keyboard controller, as well as unit for switching input modes connected to the keyboard controller. The touch units and keyboard push button keys are form a laminated construction. Received signal from unit for switching input modes, the keyboard controller selects and processes information input from the keyboard push button keys or from the touch units. The invention also discloses information input method for electronic devices.
Description
Technical field
The present invention relates to the position input technology of portable electric appts, especially relate to a kind of message input device and method of portable electric appts.
Background technology
In the rapid development of computer technology process, the invention of keyboard and mouse is a lot of convenience for people bring, and are used fully, and the technology of keyboard and mouse itself also changes thereupon.For the keyboard that stems from mechanical type English alphabet typewriter the earliest, though all there is not too many variation on its basic configuration, the principle, for example cardinal principle still is an XY array scanning mode, or Mechanical Contact formula or capacitor induction type, but at aspects such as volume, use feeling, life-span, lightweight, costs very big variation has taken place all.For the mouse that stems from XY axle image input instrument the earliest, from the X/Y shaft mechanical formula mouse that begins most to photoelectric reflection formula mouse, the photoelectric coding mechanical wheel rotates mouse, till now light image position transducer mouse again, the performance of mouse, reliability, precision etc. all obtain tremendous development.Mouse function also has bigger expansion, such as increasing roller operation etc.
Along with the development of infotech and to the rising of the demand of mobile computing, people have proposed new demand to the location input device of mobile model or portable computer, be exactly in portable computer, the volume of location input device needs smaller, is fit to carry; And constitute an integral body with portable computer, the action of plug so just need not arranged when using portable computer, also need not the line that the outside hangs, make outward appearance relatively more neat and clean.
Because mouse (the especially ball of Gun Donging) volume itself is too big, the mutation of integrating mouse and mouse is restricted such as trace ball etc. on portable computer, therefore limited in notebook computer application on the whole, but itself with regard to mouse, still meet very much human oriented design: at first be the operation that is fit to very much hand, the finger natural torsion, when wrist moved, finger did not need firmly; Next is that moving range is very big, and mobile accuracy is high and very sensitive.So need pinpoint occasion at some, such as drawing, play games etc., still need the location input device of mouse and so on.
Investigate the developing history of keyboard and mouse by prior art, the development that can find keyboard and mouse is that the track that is following separately carries out, there is not too many contact each other, perhaps both are united two into one simply, utilize advantage separately mutually, but not from essence these two important human-computer interaction devices being integrated.
In the prior art, the technical scheme of keyboard and mouse combination can refer to Patent Document WO 02077964, and US 2003001822, and WO 03041049, CN 1466033 etc.Described prior art is whole and mouse combination with keyboard, such as top be keyboard, keyboard below or next door are mouse, the perhaps quantity by the reduction keyboard, the mode by key combination reaches the singlehanded purpose of controlling.But there are some defectives in these prior aries: on the one hand and existing keyboard, the mouse use habit is inequality and be difficult to allow the user accept; On the other hand, traditional mouse needs a relatively flat plane to allow mouse move in the above, so in mobile office, be subjected to a lot of restrictions, such as in aircrafts such as airport, be not equipped with chain-wales on the seat that the passenger on general airport waits, this makes the application of the mobile class mouse pointing device of rolling be greatly affected; In addition, keyboard and mouse links together, and still needs to carry out wired being connected with main frame, if all adopt wireless mode, cost can compare higher.
In present portable computer, except the grafting common mouse, relatively Chang Yong integrated location input device mainly contains three classes: the first kind, Track Point (TRACK POINT), certain position in the middle of keyboard embeds a Track Point, according to finger shaking on Track Point, produce position signalling,, determine the position of cursor on display by detecting the variation of these signals; Second class, Trackpad (TRACKPAD), below the keyboard or near a little touch window is set, finger moves on window, the variation of resistance, electric capacity or variation inductance perception finger position by window lower floor; The 3rd class, touch pad (TOUCH PANEL) generally is provided with the sensing device layer below display screen, and generally also sub-resistance formula, condenser type, inductance type, infrared type etc. adopt the scheme of auxiliary locators such as stylus, magnetic pen, light pen in addition.
Wherein, the benefit of Track Point is that volume is very little, and the area of bar is also littler than the button of keyboard, but because the problem of use habit, operation is not very convenient; And in the mouse moving process, finger will be exerted oneself always; Because according to the firmly big or small shift length and the velocity of displacement of judging cursor of finger, the location is not very accurate; And the button of control usefulness is distant apart from Track Point distance, this make the user must spread one's fingers (thumb and forefinger) operate or two manual manipulations.
Touch pad is then relatively more directly perceived, directly in image display frame, operate, but precision is not very accurate, relatively be fit to panel computer, PDA (personal digital assistant) etc. does not have the occasion of keyboard, though can realize handwriting input, input speed can not show a candle to the input speed of keyboard and mouse combination with regard to present technology.
Trackpad handling relatively good can one-handed performance, and relatively more directly perceived, and volume is also less, and is more durable, therefore at present in notebook computer application wider.General sub-resistance formula of Trackpad and condenser type, capacitive position detection method performance in every respect are all preferable relatively.
See also Fig. 1, be the schematic diagram of capacitive position detection method.Wherein, Trackpad comprises bottom plate 2, surface insulation layer 3 and sensor strip 4,5. Sensor strip 4 and 5 adopts the PCB (printed circuit board (PCB)) of standard or flexible circuit technology to constitute the fixation of sensor array, voltage acts on four jiaos of Trackpad and forms a stationary electric field, when pointing 1 when superficial layer moves, electric capacity from finger 1 nearest sensor strip changes, by the variation of this capacitance, make electric field cause electric current, measure via controller (figure does not show), according to the ratio difference of current distance, promptly can calculate the position of finger 1 from four corners.Concrete principle as shown in Figure 2.Computing formula is X=i
2/ I*a; Y=i
3/ I*b; I=i
1+ i
2+ i
3+ i
4Wherein, a and b represent long and wide respectively.
It is pointed out that capacitive touch control plate only all responds to finger, palm etc., but to not reaction of nail, the characteristics that is to say capacitive touch control plate are to the body capacitance sensitivity, but insensitive to the area of contact.This is because condenser type overcomes the influence that has the clutter that static produces, large-area contact area has all been removed when eliminating clutter, only write down the position of the central point of contact area, so can't distinguish a finger or whole palm is superincumbent moves.
In the prior art, it is in the technical scheme that discloses of the Japanese documentation of JP 200,003,368 10 that a kind of Trackpad is disclosed in application number, diverse location at Trackpad is provided with difference in functionality, can improve the operation convenience degree of Trackpad to a certain extent, realize a lot of functions simultaneously, such as roll, window operation etc., can also custom feature.See also Fig. 3, Trackpad 10 comprises touch area 34, is positioned at regional 38a, 38b, 38c and the 38d of the definition difference in functionality in four corners, two buttons 18, tool roll the up and down zone 36 of function and the switch 33 of Trackpad and the pilot lamp 35 of Trackpad.
Because the expanded function scope of Trackpad is very big,, can also increase the function of a lot of additional extension, such as rolling move left and right, browser forward-reverse etc. up and down along with the suitable increase of the area of Trackpad; A lot of shortcuts can also be arranged; This be common mouse and Track Point can't provide, can only handle by increasing button because if want on common mouse and Track Point to increase new function, thereby on volume, propose more requirement.Just because of Trackpad provides this convenience, make on portable computer from now on, to have more long-range development.
Although Trackpad is the most popular on notebook computer, on handling, also there is place really not as common mouse, this also is the very important reasons of a lot of notebook computers mouse presented with machine in sales process.
Trackpad is handling not good mainly from following factor: at first be position problems, Trackpad generally is positioned at the below of keyboard, near the position of space bar, and space bar generally carries out button operation by thumb, in the operation of reality, thumb is often run into Trackpad easily, cause cursor position to move, and because Trackpad is comparatively sensitive, if careless words, cause maloperation easily and on the position of mistake, import, influence the efficient of keyboard input; Next is that one-handed performance is not easy, because the position between button and the Trackpad is not suitable for single manual manipulation, and it is also inequality with the use habit of common mouse, therefore the cursor key operation of wanting to finish with Trackpad some more complicated is the comparison difficulty, such as play games, picture etc., still convenient, flexible not as common mouse; It is too far away to be that localization part leaves keyboard once more, displacement is distant in frequent keyboard and Trackpad blocked operation, and at every turn when moving on on the keyboard from Trackpad, finger need be reorientated, such as finding the F of raised indicia key and J key are arranged on the keyboard, so still pretty troublesome.
In addition, the mated condition of Trackpad and keyboard is not as Track Point, and also not as Track Point, this is parallel side by side placement because of keyboard of the prior art and Trackpad on volume is arranged, be subjected to the restriction of notebook volume, therefore think that further reduced volume will compare difficulty.
Summary of the invention
At the deficiencies in the prior art, the technical matters that the present invention solves is to provide a kind of message input device and method of portable electric appts, both can import also and can in less switching displacement scope, carry out the input of Trackpad mode by keyboard, can increase information the convenience of input, and further dwindle the volume of portable electric appts.
For this reason, the technical scheme of technical solution problem of the present invention is: a kind of message input device of portable electric appts is provided, comprises touch unit, touch input processing unit, keyboard and keyboard controller; Described touch input processing unit links to each other with described touch unit by lead-in wire, also comprises the input selected cell of connecting key disk controller, and described input selected cell links to each other with the input mode switch unit; Described touch unit and keyboard cambium layer stack structure; Described input selected cell is used to resolve the signal that the input mode switch unit sends, and being sent to keyboard controller after will selecting from the logic that keyboard and the input information that touches input processing unit are done alternative according to this signal, described keyboard controller is handled the input information that receives;
Comprise also and touch that the touch unit that input processing unit links to each other controls button, be used to cooperate touch unit so that expanded function to be provided.
Preferably, described stepped construction also comprises the adhered layer between touch unit and the keyboard or supports the fixed support of described touch unit.
Preferably, described input mode switch unit comprises infrared eye or mechanical type change-over switch.
The present invention also provides a kind of data inputting method of portable electric appts, comprises step:
1) the input selected cell is according to the input mode of the signal judgement current time of connected input mode switch unit transmission, if the keyboard mode input then enters step 2); If the touch manner input then enters step 3);
2) carry out keyboard scan, will detect keyboard scancode and be sent to keyboard controller, described keyboard scancode is converted to the discernible signal of main frame and sends to main frame by described keyboard controller;
3) the touch manner processing unit receives the input from touch unit and touch unit control button, produces corresponding signal; Described keyboard controller receives and resolves the signal by the touch manner processing unit generation of described input selected cell transmission, is converted into the discernible signal of main frame and sends to main frame.
With respect to prior art, the invention has the beneficial effects as follows: owing to the present invention is based on the treatment characteristic of user's operating feature and operating system, with touch unit and keyboard cambium layer stack structure spatially, and realize two kinds of input mode differentiations in time by the input mode change-over switch, can further dwindle the volume of portable electric appts, be convenient for carrying; Simultaneously can not cause maloperation; Finger displacement in the time of can also shortening keypad character input and the input switching of Trackpad position makes the picture and text input convenient flexibly.
And, when being applied to notebook computer, the present invention can compress the area of notebook computer C face, make that the mould design is simpler, and the casing globality is strong, and outward appearance is more succinct, and rugged construction is firm.
In addition, in preferred version of the present invention, can on the basis of stepped construction, suitably increase the area of touch control manner, thereby increase the function of a lot of additional extension by touch unit control button, such as rolling move left and right, browser forward-reverse etc. up and down.
In preferred version of the present invention, can adopt the shared portion in the keyboard to substitute touch unit control button, thereby further reduce volume and cost.
Description of drawings
Fig. 1 is the schematic diagram of capacitive position detection method;
Fig. 2 is the circuit diagram of capacitive position detection method;
Fig. 3 is the stereographic map of a kind of Trackpad of the prior art;
Fig. 4 is the block diagram of message input device first embodiment of the present invention;
Fig. 5 is keyboard and a touch unit stepped construction synoptic diagram in the embodiment of the present invention;
Fig. 6 is the overview of message input device shown in Figure 4;
Fig. 7 is the process flow diagram of data inputting method in the present embodiment;
Fig. 8 is the block diagram of message input device second embodiment of the present invention;
Fig. 9 is the block diagram of message input device the 3rd embodiment of the present invention;
Figure 10 is the overview of message input device the 3rd embodiment of the present invention;
Figure 11 is a process flow diagram of handling the signal of keyboard shared portion in the third embodiment of the invention.
Embodiment
Main design of the present invention is: Trackpad and keyboard are overlaped, distinguish Trackpad operation and keyboard operation by change-over switch, to save the space of portable electric appts, the displacement of finger when reducing the switching of importing in character input and position.That is to say with prior art that the way that the operation of keyboard operation and Trackpad separates on time and space simultaneously is differently, the present invention separates keyboard entry method and Trackpad input mode in time, and overlaps in space together.
Design of the present invention is derived from careful observation, the operational motion of finding the user of notebook computer has following characteristics: do not carry out the input of position when carrying out the character input, when carrying out the position input, do not carry out the input of character, in other words, the character input of keyboard and the position input of Trackpad mode are not carried out simultaneously, moving even all use button on the keyboard to carry out cursor position, also is operating feature so.Be because the position input operation of keyboard input operation and Trackpad is all finished by user's hand on the one hand; Be because the reason of operating system on the other hand, can not allow user's input character in moving cursor, before the position that will import is not shortly determined in other words, it is the input that to carry out literal, the two can only get one at synchronization, even give an order simultaneously, also be order carry out (even also be sequential processes when playing games, only some occasion position and character order are switched faster.Relatively more classical as the Tetris recreation, be to carry out by the action that moves down fast simultaneously when being rotated operation, even pressed, also to wait previous spinning movement to finish after, carry out next one again and move).Because these characteristics of keypad character input and the input of Trackpad position, cause the action of switching of input of the input of alphabetic character and position more frequent, especially prepare the document that both pictures and texts are excellent or chart in.
Seeing also Fig. 4, is the block diagram of message input device first embodiment of the present invention.
This message input device comprises touch unit 110, touch unit control button 120, touches input processing unit 130, keyboard 140, keyboard controller (EC) 150, input mode change-over switch 160; Described touch unit 110 is placed on keyboard 140 tops, spatially overlapped (Fig. 5 reference).
Wherein, touch unit 110 perception users' touch and produce corresponding signal; Touch unit control button 120 be similar to mouse about two keys, when the user touches, produce corresponding push button signalling, can certainly be push button signalling with other expanded functions; Touch 130 of input processing units and receive described signal and/or push button signalling, be converted into the input signal of touch manner and be sent to keyboard controller 150.
Described input mode change-over switch 160 is used to realize the switching of input mode, makes keyboard controller 150 handle the signal of different input modes in the different time periods, realizes Trackpad input mode and keyboard entry method differentiation in time.
Seeing also Fig. 6, is the overview of message input device shown in Figure 4.
Described touch unit 110 employing ALPS (Alpine is thought, Japanese firm's name) or SYNACTICS (Si Naitaike, u s company's name) can.
In an example, at the zone line of keyboard, roughly on the center between F key and the J key, the soft PCB of touch unit 110 is fixed on the keyboard, the fixed form in this example adopts bonding method.Though touch unit 110 is thin, but have certain thicknessly, bring discomfort owing to have certain thickness to finger, can do the fixing part keyboard 140 of touch unit 110 thinner in order to prevent touch unit 110, G among Fig. 6, F key, and R, T, Y, U, I, F, J, C, V, B, the part of N, make and to have pasted after the touch unit 110 and do not have the keyboard level of touch unit 110 fair, so just do not have the projection sense.
Need to prove that touch single former 110 material and should select good springiness, flexible material that ductility is good as far as possible for use, keyboard 140 also will be selected the short button of stroke simultaneously, influences serviceable life to prevent touch unit 110 material excessive deformations.Preferably, the center section of touch unit 110 keyboard 140 of as far as possible getting along well is bonding, and just the peripheral position of touch unit 110 is bonding with it, and the assurance bond strength gets final product.
The right and left key that touch unit control button 120 is equivalent to mouse be arranged on keyboard 140 near, present embodiment is provided with touch unit button 120 in the place that finger can conveniently get at.
Preferably, touch unit can be controlled the below that button 120 is placed on space bar, user's thumb can be operated very like a cork.
In order to cooperate touch unit 110, generally need to handle the chip of position calculation, promptly touch input processing unit 130, normally be placed on the below of touch unit 110.In the present invention because touch unit 110 is placed on behind keyboard 140 tops and the position of keyboard 140 conflict, therefore chip need be placed on keyboard below.The lead-in wire of touch unit 110 (figure does not show) is guided to by the space between the keyboard 140 and is touched input processing unit 130.
Keyboard 140 can adopt the keyboard of common notebook computer, keyboard 140 is placed on the below of touch unit 110, in order to carry out the operation of normal input character, the part of blocking keyboard 140 in touch unit 110 draws corresponding keyboard symbol.
The described corresponding keyboard symbol that draws on touch unit 110 keeps putting in order consistent with original keypad character.
Input mode change-over switch 160 is arranged on the position that finger conveniently gets at, and is characterized in either-or switch, i.e. during Trackpad work, keyboard does not respond actuation of keys; Conversely, when keyboard was worked, Trackpad was not done any reaction to finger moving thereon.That is to say that Trackpad and keyboard can not work simultaneously, in order to avoid cause the input error of lap.
In the embodiments of the present invention, in keyboard range or near input mode change-over switch 160 is set, the form of input mode change-over switch 160 has multiple, can be button, induction type etc., this does not give unnecessary details.Described input mode change-over switch 160 is connected on the keyboard controller 150.
In an example, input mode change-over switch 160 is the left and right sides in touch unit 110, the infrared eye that (as shown in Figure 6) is provided with in the slit of keyboard 140, left button is roughly at D, F, in the middle of three keys of R, right button is at J, K, in the middle of three keys of I, these two infrared eyes can be selected human body infrared detector commonly used for use, but detection range will be lacked, preferably can only when pressing close to keyboard, just respond to, leaving keyboard 2-3mm does not a little just respond to, then with the signal of two infrared survey devices mutually or after, export to keyboard controller 150, as keyboard with touch the condition that input mode is switched.
To achieve the object of the present invention, keyboard controller 150 need be carried out corresponding part and be revised on the basis of traditional keyboard controller, mainly be to increase some functions, that is: the state of monitoring input mode change-over switch 160, state according to input mode change-over switch 160 is controlled, and the output of the output of keyboard and Trackpad is done exported to main frame (figure does not show) after the alternative logic is selected.
Seeing also Fig. 7, is the process flow diagram of data inputting method in the present embodiment.
Step S711, whether the state of judgement input mode change-over switch opens the touch manner input; If then enter step S712; If not, then enter step S715;
Step S712, touch unit induction user's touch also produces corresponding signal; Perhaps touch unit control button produces control signal corresponding;
Step S713, the touch input processing unit carries out position calculation or the touch unit keypad is disconnected;
Step S714, keyboard controller receives and touches the signal that processing unit adopts PS/2 output, carries out sending to main frame after the respective handling;
Step S715 receives keyboard scanning signal;
Step S716 converts detected keyboard scancode to signal that main frame can be discerned;
Step S717 sends to main frame with described signal, finishes the information input of keyboard mode.
Need to prove that the function that keyboard controller 150 increases can realize that those skilled in the art knows with software, can finish described flow process by the program of revising keyboard controller 150 inside, with the expansion aforementioned functional, this does not give unnecessary details.
Certainly, also can adopt hardware mode to realize, as shown in Figure 8, be the block diagram of second embodiment of the invention.This embodiment adopts existing keyboard controller, but increase input selected cell 170, be used to monitor the state of input mode change-over switch 160, state according to input mode change-over switch 160 is controlled, and the output of the output of keyboard and Trackpad is done exported to keyboard controller after the alternative logic is selected.
Seeing also Fig. 9 and Figure 10, is the 3rd embodiment of message input device of the present invention.
The present embodiment and first embodiment are roughly the same, difference is: at first, in the present embodiment, the fixed installation of touch unit 110 is adopted and is realized at the elastic support 180 of four corner portions, can alleviate flexible requirement like this to touch unit 110, because separate between touch unit 110 and the keyboard 140, mission life is longer.
Secondly, do not adopt the touch unit control button 120 of first embodiment, replace but choose two or four wantonly in four buttons 190 of button C, V, B, N of employing keyboard.
Once more, the position of input mode change-over switch 160 is moved on to the below of space bar, and input mode change-over switch 160 also changes key switch into, use for thumb control, can reach the repeat usage height of keyboard, cost-effective purpose like this, also further dwindle volume simultaneously.
In the present embodiment, input mode change-over switch 160 can be controlled by thumb, and C, V, these four buttons of B, N then can be controlled together by the thumb of forefinger and another one hand, so the displacement of each finger is all shorter.
Please refer to Figure 11, will make suitable modification at the button shared portion in the Control Software of keyboard controller 150.
Step S111 judges whether the input mode change-over switch is pressed; If then enter step S112; If not, then enter step S116;
Step S112, the output of closing keyboard mode;
Step S113, keyboard scan works on;
Step S114 becomes the signal transformation of detected C, V, these four buttons of B, N the signal of touch unit control button;
Step S115 sends to main frame with the input information of touch mode;
Step S116 closes the output of touch manner;
Step S117, keyboard scan works on;
Step S118 translates into ASCII character or MAK sign indicating number with detected key assignments keyboard scancode;
Step S119 sends to main frame with the information of described keyboard mode.
Be appreciated that, the present invention is not only applicable to notebook computer, can also be applied to other similar portable electric appts, thereby realize keyboard entry method and Trackpad input mode are spatially superposeed, distinguish in time, thereby reduce the volume of portable electric appts, reduce the probability of maloperation, make that the picture and text input is convenient.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. the message input device of a portable electric appts comprises touch unit, touches input processing unit, keyboard and keyboard controller; It is characterized in that: described touch input processing unit links to each other with described touch unit by lead-in wire, also comprises the input selected cell of connecting key disk controller, and described input selected cell links to each other with the input mode switch unit; Described touch unit and keyboard cambium layer stack structure; Described input selected cell is used to resolve the signal that the input mode switch unit sends, and being sent to keyboard controller after will selecting from the logic that keyboard and the input information that touches input processing unit are done alternative according to this signal, described keyboard controller is handled the input information that receives;
Comprise also and touch that the touch unit that input processing unit links to each other controls button, be used to cooperate touch unit so that expanded function to be provided.
2. the message input device of portable electric appts according to claim 1, it is characterized in that: described stepped construction also comprises the adhered layer between touch unit and the keyboard or supports the fixed support of described touch unit.
3. the message input device of portable electric appts according to claim 1, it is characterized in that: described input mode switch unit comprises infrared eye or mechanical type change-over switch.
4. the data inputting method of a portable electric appts is characterized in that, comprises step:
1) the input selected cell is according to the input mode of the signal judgement current time of connected input mode switch unit transmission, if the keyboard mode input then enters step 2); If the touch manner input then enters step 3);
2) carry out keyboard scan, will detect keyboard scancode and be sent to keyboard controller, described keyboard scancode is converted to the discernible signal of main frame and sends to main frame by described keyboard controller;
3) the touch manner processing unit receives the input from touch unit and touch unit control button, produces corresponding signal; Described keyboard controller receives and resolves the signal by the touch manner processing unit generation of described input selected cell transmission, is converted into the discernible signal of main frame and sends to main frame.
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| CNB2005100016617A CN100504731C (en) | 2005-02-03 | 2005-02-03 | Information input device and method for portable electronic device |
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|---|---|---|---|
| CNB2005100016617A CN100504731C (en) | 2005-02-03 | 2005-02-03 | Information input device and method for portable electronic device |
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| TWI550493B (en) * | 2014-03-14 | 2016-09-21 | 矽統科技股份有限公司 | Capacitive touch device and sensing method thereof |
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| CN101595445B (en) * | 2006-12-19 | 2016-08-24 | 长兴泽宇信息科技有限公司 | Human-computer interaction device, electronic installation and man-machine interaction method |
| CN100555180C (en) * | 2007-01-26 | 2009-10-28 | 鸿富锦精密工业（深圳）有限公司 | The keyboard of tool multiple output function |
| CN102004545A (en) * | 2009-08-28 | 2011-04-06 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device and input mode switching method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI550493B (en) * | 2014-03-14 | 2016-09-21 | 矽統科技股份有限公司 | Capacitive touch device and sensing method thereof |
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