CN100478851C - Device with keyboard entry function and input method - Google Patents
Device with keyboard entry function and input method Download PDFInfo
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- CN100478851C CN100478851C CNB2005100048302A CN200510004830A CN100478851C CN 100478851 C CN100478851 C CN 100478851C CN B2005100048302 A CNB2005100048302 A CN B2005100048302A CN 200510004830 A CN200510004830 A CN 200510004830A CN 100478851 C CN100478851 C CN 100478851C
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Abstract
A sort of equipment with keyboard-inputting function and the inputting method, the structure has one supporting body which carries multiple make-and-break keys, the supporting body can balance and transfer the power or effect received at the keys, the supporting body itself is supported, have a stress sensor which can reflect the continuous variation of the stress it receives; the signal processing line can summarize or dispose the stress signal, get the value of bearing force or the largest value or the increased value when the key is hit, at the same time according to the switch-signal produced by the corresponding key, following the prearrangement confirms the corresponding information, every time it can input different information by hitting the same key.
Description
(1) technical field:
The invention belongs to keyboard, computing machine, hand telephone set etc. and have the technology of information input function equipment.
(2) background technology:
Existing keyboard (comprising the keyboard on the equipment such as microcomputer, mobile phone) is not volume excessive (button is more, and input speed is very fast), is not easy to carry, though be exactly volume little (button is less) mode of operation complexity, input speed is slow.
In order to solve this contradiction, people propose multiple scheme, all can not be satisfactory.For example, in the keyboard plan that CN 2192910Y provides, designed a kind of can before and after the button stirred, the area that keyboard can be taken reduces, but has increased the difficulty of finger manipulation, effect is also bad.Other use the scheme of less button, as the scheme in CN 1264982A, CN 1365041A, CN 1348127A, the CN 1288318A, character or literal often need more times or more complicated operations could import.
Someone advises utilizing switch that click power high low signal can be provided to improve the input capability of button as the part of button or button stack, and (U.S.Pat 5,995,026), but this switch or design structure complexity, the cost height, the reliability poor stability, if be used for keyboard, need to use the sensor that can survey stress with the number of keys as much, cost can increase several times, and its signal is difficult to the wiring transmission and handles, very unreasonable technically and economically, also be difficult to microminiaturization, these problems fail to solve always for many years, can't practicability.
(3) summary of the invention:
The objective of the invention is to propose a kind of brand-new technology scheme, can make the keyboard of relevant apparatus can import a greater variety of information more easily with very simple and direct and cheap measure, or the number of keys of keyboard is reduced, dwindle its volume, stroke when not increasing simultaneously input, and reduce that the functions of use key brings trouble, improve the service efficiency of the device of band miniature keyboard greatly.Be specifically described below.
The present invention includes a kind of device with keyboard entry function, at least comprise structure and a plurality of key, described structure is framework or housing or both combinations, carry described key, thereby described key is pushed for dependence and is changed the button that on off state or level situation provide switching signal, thereby perhaps changes the membrane keyboard that on off state or level situation provide switching signal for relying on to touch;
It is characterized in that:
Described structure comprises at least one supporting body that carries a plurality of described keys, its supporting body integral body has certain rigid or has certain elasticity, but balance be delivered in that different key that input the time carried is suffered to press or click all or part of power or effect, supporting body self is subjected to the support of described structure part or structure parts;
The one or more positions or the parts of described supporting body, the one or more positions or the parts of perhaps described structure support bearing body, contain or attach stress or the strain transducer or the sensitive element that can reflect the suffered STRESS VARIATION of this supporting body when its key that carries is pressed or clicks arranged, this stress or strain transducer or sensitive element can be connected with corresponding signal transmission line, can provide corresponding stress or strain measurement signal or status signal;
Described device can have built-in or external signal processing circuit or element or processor or interface, the stress signal of described stress or strain transducer or sensitive element can be amplified or put in order or gather or change or calculate or encode, relevant measuring point or the suffered stress of parts gather value or its respective signal and gather value and the difference during button not when obtaining each key and being subjected to pressing, can be according to the variation or the difference of these numerical value or signal value, and the switching signal that provides according to described different keys simultaneously, obtain pairing input information according to presetting.
The position of described stress or strain transducer or sensitive element or number not only do not need corresponding one by one or identical with described each key, its number can also be less than the number of key greatly, in some cases, even can only use stress or strain transducer.
In fact, the power of pressing keys or membrane keyboard can pass to the supporting body integral body of each key of carrying wholly or in part, the whole suffered stress of supporting body can be to the position that supporting body is supported and some position or the parts transmission of structure support bearing body, therefore, strain gauge on these positions or the parts or sensitive element can provide relevant with the whole suffered stress of supporting body thereby also be correlated with the power of pressing keys or membrane keyboard the stress measurement signal.
Sometimes the bottom of each button of keyboard (as some cell phone keyboard) or membrane keyboard can be a common base plate or printed circuit board (PCB).When needing, described supporting body can only carry each key the bottom or with the base plate of each key be one, bear the power that is delivered to bottom or base plate when each key is pressed.Sometimes other parts of keycap or key also can be connected with other positions of structure by rubber or other resilient materials or accessory, and through part divides pressure, at this moment, the part that may just push the power of this key of that supporting body bears and relevant sensor reflection should take in when signal Processing.
The supporting body of described device can be set to self be exactly or inside contain or its below subsidiaryly have or small pieces of cloth used for patches has tabular or lamellar strain gauge or Sensitive Apparatus.This type of strain gauge or Sensitive Apparatus can be made of the two layers of conductive material that has the piezoresistive material interlayer, also can constitute by the two layers of conductive material that has the elastic insulating material interlayer, also can be by pressure-sensitive microswitch matrix touch membrane or touch-screen material are constituted, can be designed as have certain flexible even have a certain flexibility, be convenient to be arranged on the key group below, measure the click power that key is subjected to.A general tabular or lamellar strain gauge or the Sensitive Apparatus of using of the supporting body of one group of key gets final product.
Described device can reflect the stress or the strain sensor of the suffered STRESS VARIATION of this supporting body when key that supporting body carries is pressed or clicks, and also can be stress or the strain sensitive on-off element that switching signal can be provided.Like this, when the suffered click power of the key that supporting body carried surpasses specialized range, described stress or strain sensitive on-off element can provide extra switching signal, add the click switch signal that original key is subjected to, can be according to presetting another information of representative input.
In fact, the information of input be what not only depend on by be which key, can also depend on the strength that presses this key, therefore, the user can be on any key with one click or touch a greater variety of information of input.
When needing, 2 of can support in the acceptance that certain phase mutual edge distance is arranged of described supporting body or 3 or 4 positions have strain gauge or sensitive element respectively.Arrange like this to help stress measurement and simplify click power and calculate.
Sometimes, because the cause of the structure of the structure of supporting body, support bearing body or relevant stress or strain transducer or sensitive element structure, number, position, hit the key of diverse location on the same supporting body with same force, can obtain different click power measurement of correlation signal or data.At this moment, want to reflect the stressed size of the key of a certain position, can further process exclusive disjunction or different correction or compensation to measuring-signal or data according to the position or the switching signal of this key, also can preset when judging input information, according to the switching signal of different keys, during with reference to stress measurement of correlation signal according to suitable various criterion.
Obviously, according to the arrangement of this device, described very a spot of strain gauge just can reflect in described each key any one the suffered click power or the size of effect, and not only simple in structure, cost is low, and its signal is also easier to gather and handle.
The stress measurement signal that described stress or strain transducer or sensitive element are provided can be arranged on the described structure or its error is directly or indirectly regulated or correction or compensating operation or send the knob or the key of its instruction.Like this, if the output characteristics of described strain gauge or miscellaneous part change, can eliminate adverse effect easily.
In simple especially designed lines, the strain gauge of use can be cheap stress sensitive resistance, and its resistance value reduces along with the increase of stress.Several stress sensitive resistance that can disperse distribute connect with parallel connection or series system, reflect the variation of each stress sum with the variation of its total resistance value, are more convenient for handling or calculating.
The strain gauge that uses can also be cheap presser sensor electric capacity, and its capacitance increases along with the increase of pressure or reduces.Several presser sensor electric capacity that can disperse distribute connect with parallel connection or series system, reflect the variation of each stress sum with the variation of its total capacitance value, are more convenient for handling or calculating.
Described device can have built-in or external signal processing circuit or processor or All other routes or calculation element, the stress signal of described sensor or sensitive element or its value of gathering or its value of magnification or its computational data or processing costs and the corresponding signal when being subjected to pressing without any key before this or numerical value or data compare in the time of each a certain key can being subjected to pressing, obtain its difference or increment or their maximal value, the switching signal that can also provide according to described different key simultaneously in view of the above obtains pairing input information.
With difference or increment or their maximal value input information for referencial use, help reducing sensor or the drift of other element characteristics and some mechanical effect and change the adverse effect that to bring measurement or input accuracy rate.
When needing, can convert the simulating signal of the sensor output to digital signal through the A/D inverting element, the input processor follow procedure is sued for peace, stores, revises, compares, judges, is encoded and other computings and processing again.
Described device can have built-in or external acoustic signal or optical signalling generation part, can utilize the dynamics of sound equipment or feature such as tone or tone color or luminous brightness or the variation of color or figure or luminous position, point out or reflect or express or respond the suffered power of the pressing size of each key or supporting body or change or different, perhaps the difference of the key position that is pressed is perhaps pointed out which kind of information of being imported that is.
The present invention can comprise the external connection keyboard of the device with above-mentioned keyboard entry function, portable or notebook computer, e-book or dictionary, personal digital assistant, mobile phone, wireless phone, controller or telepilot.
Described device can have to external computing machine or other devices or required coding circuit or interface circuit and other circuits or the element of equipment conveying institute's input signal.
Described device can have notebook type or hand-held or portable computer or required various elements and the circuits of miniature data processing equipment such as liquid crystal or other types display and microprocessor, storer, interface, battery.
Described device can have miniscope and signal and receive hand telephone set or required element and the circuits of other communicators such as transmitting line and element microprocessor, storer, acoustic pickup, loudspeaker, battery.
Described device can have and can send required respective lines and infrared ray window or the elements such as ultrasonic generator or electromagnetic antenna or cable interface of controller that infrared signals or ultrasonic signal or electromagnetic wave signal or wire signal carry out remote control to other equipment.
The present invention also comprises a kind of method of utilizing keyboard input information, comprising:
(i) device with keyboard entry function is set, at least comprise structure and a plurality of key, described structure is framework or housing or both combinations, carry described key, thereby described key is pushed for dependence and is changed the button that on off state or level situation provide switching signal, thereby perhaps changes the membrane keyboard that on off state or level situation provide switching signal for relying on to touch;
Make described structure comprise the supporting body that at least one carries a plurality of described keys, its supporting body integral body has certain rigid or has certain elasticity, but balance be delivered in that different key that input the time carried is suffered to press or click all or part of power or effect, supporting body self is subjected to the support of described structure part or structure parts;
Make the one or more positions or the parts of described supporting body, the one or more positions or the parts of perhaps described structure support bearing body, contain or attach stress or the strain transducer or the sensitive element that can reflect the suffered STRESS VARIATION of this supporting body when its key that carries is pressed or clicks arranged, this stress or strain transducer or sensitive element can be connected with corresponding signal transmission line, can provide corresponding stress or strain measurement signal or status signal;
Built-in or the external signal processing circuit or element or processor or the interface that (ii) make described device have, the stress signal of described stress or strain transducer or sensitive element amplified or arrangement or gather or change or calculate or encode, relevant measuring point or the suffered stress of parts gather value or its respective signal and gather value and the difference during button not when obtaining each key and being subjected to pressing, can be according to the variation or the difference of these numerical value or signal value, and the switching signal that provides according to described different keys simultaneously, obtain pairing input information according to presetting.
From the above description as can be seen.The present invention is different with conventional keyboard, can not only discern which key by switching signal and be subjected to shake-up, and can discern the different of all relevant suffered power of pressing of key by a seldom several even different stress signals strain gauge relevant with the key supporting body.Therefore, under the situation that does not need click function key or other keys, utilize the difference of click power, the same key of one click just can be imported several kinds of characters or information.For example, to the click power of a certain key hour input be " A ", input was " 1 " when click power was big slightly, input was certain punctuation mark when click power was bigger.Like this, can use the less keyboard of bond number, replace a lot of keyboard of bond number, perhaps increase the input function of same bond number keyboard greatly, very help the microminiaturization of keyboard and band keyboard electrical equipment or IT product.Particularly, accomplish that these only need to increase simple sensor or force sensing element and the foolproof circuit or the program of the suffered stress of several measurement supporting bodies, technology is simple and reliable, and cost is very low, thereby the present invention has tangible advance and practicality.
(4) description of drawings:
Fig. 1 is the partial schematic sectional view that the embodiment 1 of this device amplifies.
Fig. 2 is a partial schematic sectional view of giving embodiment 2 amplifications of device.
Fig. 3 is the synoptic diagram that the embodiment 3 of this device amplifies.
Wherein, (1) be key (button), (2) are supporting body, and (3) are structure, (4) be strain gauge, (5) be keyboard external cable (part), (5) are the conductive rubber end of button, and (7) are rubber film, (8) be the printed circuit board (PCB) conducting film, (9) be bonding coat, (10) function button, (11) are the Waist watch type mobile phone display screen.
Fig. 4 determines the schematic of mode for the input character of embodiment 1.
Wherein, " key numbering " refers to the order of the key of being clicked, and " pressing power " refers to the size of click power, and " input character " refers to the character that corresponding click is imported.
Fig. 5 is the schematic block circuit diagram of embodiment 1.
Comprising: strain gauge (4), amplifier (12), multipath transmission converter (13), A/D converter (14), microprocessor (15), interface (16), external cable (5); Button (1), starting switch (17).
(5) embodiment:
Embodiment 1 (Fig. 1) is a kind of miniature external connection keyboard of present technique, its 30 keys are button, by 1 supporting body carrying, between structure base plate and supporting body bottom 4 strain gauges (can be the standard touch force sensor that is similar to Honeywell AG) are arranged, the click power that arbitrary button is subjected to can be delivered on these 4 sensors.The signal processing circuit of this keyboard and processor (in accompanying drawing 1, omit and do not draw) can be with these 4 sensors be subjected to force signal sue for peace at any time (resultant force signal value), and the moment maximal value and the difference of resultant force signal value when not having button be subjected to press thereof of resultant force signal in single click process when calculating a certain button and being subjected to pressing, according to the size of this difference and the switching signal of respective keys, determine the character or the information of this click representative according to predefined program, through interface and external cable, relevant information is transported to relevant device.
Except a small amount of function key, each button (as shown in Figure 4) of this keyboard will be pressed when being subjected to less power, imports various letters; Stressed when big slightly, import various arabic numeral or punctuation mark; Stressed when bigger, input capitalization or special symbol or instruction.Concrete input mode is preset in the program of processor, Fig. 4 only enumerated wherein 5 buttons as example explanation can import which kind of character when being subjected to clicking.As can be seen, will import " a " when " 1 " number key is subjected to the click of less power, will import " 1 " when power is big slightly, will import " A " when being subjected to more energetically; To import " e " when " 5 " number key is subjected to the click of less power, will import " 5 " when power is big slightly, will import " E " when being subjected to more energetically; The rest may be inferred for the input mode of other keys.
Stressed the built-in sound-producing device of this keyboard can send the voice signal of different tones not simultaneously, presses the difference of power with prompting.The very convenient one-handed performance of this keyboard, click can be imported 80 kinds of information or instruction by single, and high efficiency is easy to carry.
This embodiment circuit theory main composition (with reference to figure 5) is:
4 strain gauges (4), the amplifier that is attached thereto (12)) and multipath transmission converter (13) and A/D converter (14), with microprocessor (15) and the interface (16) and the external cable (5) of its connection; Each button (1) and the switching signal transmission line that itself and microprocessor are connect; Can make circuit enter the starting switch (17) of duty in addition.
The logical order of its signal Processing is:
(i) open starting switch, device is started working;
(i i) each strain gauge, becomes digital signal through multipath transmission converter and A/D converter again and enters microprocessor after amplifier amplifies at the signal under the no click state, asks it and stores as the reference value;
(iii) certain button is clicked;
(iv) relevant with this button switching signal enters microprocessor through transmission line, and this processor identification is also stored its key numbering;
(v) each strain gauge at the signal under this time click state after amplifier amplifies, become digital signal through multipath transmission converter and A/D converter again and enter microprocessor, the difference of that microprocessor calculates this signal value by preset program and (maximal value in the single click process) and aforementioned reference value, and with the affiliated scope of this definite click power size (less or slightly greatly or bigger);
(vi) by preset program, microprocessor is determined in the memory contents of mode at the input character as shown in Figure 4 that presets, retrieve the input character or other information that not only meet the key numbering but also meet scope under the click power size, it is carried relevant device through interface and cable.
Embodiment 2 (see figure 2)s are a kind of mobile phone of present technique.18 buttons (1) are arranged on its keyboard, and its keycap exposes by the hole on structure (housing) top, and each button is connected by rubber film (7), and the part of this rubber membrane is connected on the housing through bonding coat (9).The bottom of button is the conductive rubber end (6) of button, when button is subjected to pressing, the conductive rubber end will contact with the printed circuit board (PCB) conducting film (8) on the tabular supporting body (being integrated with printed circuit board (PCB)), connects on-off circuit, simultaneously pressure is passed to tabular supporting body (2).Be 4 strain gauges (4) between the base plate of tabular supporting body and structure (housing), this sensor can be cheap presser sensor resistance, and its resistance value reduces along with the increase of pressure.Tabular supporting body pressure is by these sensitive resistance value reflections, and its switching signal is similar to embodiment 1 with stress signal work of treatment principle.The processor of this mobile phone is also taken into account except communication data and is handled stress signal and switching signal, and the input character or the information of its identification are directly further used in processor.Its processor and other electron device circuits do not indicate in the accompanying drawings.
By the program that presets, this mobile phone is when the character input state, its 12 character keys are when being subjected to 3 kinds of different singles of weight and pressing, can import A, D, G, J, M, P, T, W respectively, B, E, H, K, N, O, U, X, character and other symbols or instructions such as C, F, I, L, O, R, V, Y, s, z: when this mobile phone is in dialing status, when touching button, only show number, this number just can be transfused to when touch increased.Touch not simultaneously, mobile phone can send different prompt tones.
The switching signal of its keyboard is similar substantially with embodiment 2 with hardware with the processing mode of pressure signal, but the initialize program of relevant input information is different.Under the dialing duty, when described 5 character keys are subjected to touching, import 1,3,5,7,9 respectively; Input is respectively 2,4,6,8,0 when being subjected to medium pressing; Press when heavier, will import various function commands.Method for inputting characters with great and regular handset are similar, may need by different keys or use different power (little, big) or by different rhythm number of times (1 time or 2 times or 3 times) but import different letters.Touch not simultaneously, this Waist watch type mobile phone also can send different prompt tones.Present technique is very beneficial for the microminiaturization by the Waist watch type mobile phone of keyboard input.
Claims (6)
1, a kind of device with keyboard entry function, at least comprise structure and a plurality of key, described structure is framework or housing or both combinations, carry described key, thereby described key is pushed for dependence and is changed the button that on off state or level situation provide switching signal, thereby perhaps changes the membrane keyboard that on off state or level situation provide switching signal for relying on to touch;
It is characterized in that:
Described structure comprises at least one supporting body that carries a plurality of described keys, its supporting body integral body has certain rigid or has certain elasticity, but balance be delivered in that different key that input the time carried is suffered to press or click all or part of power or effect, supporting body self is subjected to the support of described structure part or structure parts;
The one or more positions or the parts of described supporting body, the one or more positions or the parts of perhaps described structure support bearing body, contain or attach stress or the strain transducer or the sensitive element that can reflect the suffered STRESS VARIATION of this supporting body when its key that carries is pressed or clicks arranged, this stress or strain transducer or sensitive element can be connected with corresponding signal transmission line, can provide corresponding stress or strain measurement signal or status signal;
Described device can have built-in or external signal processing circuit or element or processor or interface, the stress signal of described stress or strain transducer or sensitive element can be amplified or put in order or gather or change or calculate or encode, relevant measuring point or the suffered stress of parts gather value or its respective signal and gather value and the difference during button not when obtaining each key and being subjected to pressing, can be according to the variation or the difference of these numerical value or signal value, and the switching signal that provides according to described different keys simultaneously, obtain pairing input information according to presetting.
2, according to the described device of claim 1, it is characterized in that described supporting body can only carry each key the bottom or with the base plate of each key be one, bear the power that is delivered to bottom or base plate when each key is pressed.
3, according to the described device of claim 1, it is characterized in that described supporting body self is exactly or inside contain or its below subsidiaryly have or small pieces of cloth used for patches has tabular strain gauge or Sensitive Apparatus.
4,, it is characterized in that the stress or stress or the strain sensitive on-off element of strain sensor of the suffered STRESS VARIATION of this supporting body when the described key that can reflect that supporting body carries is pressed or clicks for switching signal can be provided according to the described device of claim 1.
5, according to the described device of claim 1 with keyboard entry function, can be a kind of external connection keyboard, perhaps being the keyboard of a kind of notebook or portable computer or miniature data processing equipment, perhaps is the keyboard of a kind of hand telephone set or communication apparatus or a kind of telepilot.
6, a kind of method of utilizing keyboard input information comprises:
(i) device with keyboard entry function is set, at least comprise structure and a plurality of key, described structure is framework or housing or both combinations, carry described key, thereby described key is pushed for dependence and is changed the button that on off state or level situation provide switching signal, thereby perhaps changes the membrane keyboard that on off state or level situation provide switching signal for relying on to touch;
Make described structure comprise the supporting body that at least one carries a plurality of described keys, its supporting body integral body has certain rigid or has certain elasticity, but balance be delivered in that different key that input the time carried is suffered to press or click all or part of power or effect, supporting body self is subjected to the support of described structure part or structure parts;
Make the one or more positions or the parts of described supporting body, the one or more positions or the parts of perhaps described structure support bearing body, contain or attach stress or the strain transducer or the sensitive element that can reflect the suffered STRESS VARIATION of this supporting body when its key that carries is pressed or clicks arranged, this stress or strain transducer or sensitive element can be connected with corresponding signal transmission line, can provide corresponding stress or strain measurement signal or status signal;
Built-in or the external signal processing circuit or element or processor or the interface that (ii) make described device have, the stress signal of described stress or strain transducer or sensitive element amplified or arrangement or gather or change or calculate or encode, relevant measuring point or the suffered stress of parts gather value or its respective signal and gather value and the difference during button not when obtaining each key and being subjected to pressing, can be according to the variation or the difference of these numerical value or signal value, and the switching signal that provides according to described different keys simultaneously, obtain pairing input information according to presetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100048302A CN100478851C (en) | 2004-02-10 | 2005-02-02 | Device with keyboard entry function and input method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410039561 | 2004-02-10 | ||
| CN200410039561.9 | 2004-02-10 | ||
| CNB2005100048302A CN100478851C (en) | 2004-02-10 | 2005-02-02 | Device with keyboard entry function and input method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1655097A CN1655097A (en) | 2005-08-17 |
| CN100478851C true CN100478851C (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100048302A Expired - Fee Related CN100478851C (en) | 2004-02-10 | 2005-02-02 | Device with keyboard entry function and input method |
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| CN (1) | CN100478851C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9141087B2 (en) | 2009-04-26 | 2015-09-22 | Nike, Inc. | Athletic watch |
| CA2937212C (en) | 2009-04-26 | 2019-04-16 | Nike Innovate C.V. | Athletic watch |
| US8390583B2 (en) * | 2009-08-31 | 2013-03-05 | Qualcomm Incorporated | Pressure sensitive user interface for mobile devices |
| EP3025217A1 (en) * | 2013-08-23 | 2016-06-01 | Tiyqmat Research LLC | Remote control device |
| CN103837216B (en) * | 2014-03-20 | 2016-06-29 | 可瑞尔科技(扬州)有限公司 | Utilize force acting on transducer to realize the weighing device of keypress function |
| CN104633843B (en) * | 2014-12-22 | 2018-03-09 | 广东美的制冷设备有限公司 | For the remote control of air conditioner and the remote control thereof of air conditioner |
| CN106570359A (en) * | 2015-10-09 | 2017-04-19 | 中兴通讯股份有限公司 | Input method and device, and user equipment |
| CN105551864A (en) * | 2015-12-28 | 2016-05-04 | 合肥联宝信息技术有限公司 | Keyboard and electronic equipment |
| CN107037887B (en) * | 2016-02-03 | 2021-11-02 | 北京搜狗科技发展有限公司 | Method and device for Chinese character input and electronic equipment |
| EP3433123B1 (en) * | 2016-03-23 | 2020-12-02 | Behr-Hella Thermocontrol GmbH | Operating unit for a device, in particular for a vehicle component |
| TWI623953B (en) * | 2016-10-28 | 2018-05-11 | 致伸科技股份有限公司 | Keyboard |
| CN107992218A (en) * | 2017-12-29 | 2018-05-04 | 福建云脉教育科技股份有限公司 | It is a kind of that there is the e-book handwritten copy with electrically erasable module |
| CN113842637B (en) * | 2021-09-29 | 2024-01-23 | 联想(北京)有限公司 | Information processing method, device, apparatus and computer readable storage medium |
-
2005
- 2005-02-02 CN CNB2005100048302A patent/CN100478851C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1655097A (en) | 2005-08-17 |
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| KR100661000B1 (en) | Input device for portable electronic device |
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