CN2758855Y - Induction keyboard for portable terminal - Google Patents
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- CN2758855Y CN2758855Y CNU2004200772583U CN200420077258U CN2758855Y CN 2758855 Y CN2758855 Y CN 2758855Y CN U2004200772583 U CNU2004200772583 U CN U2004200772583U CN 200420077258 U CN200420077258 U CN 200420077258U CN 2758855 Y CN2758855 Y CN 2758855Y
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Abstract
The utility model provides a sensing type keyboard used for a portable terminal, wherein at least one sensing unit is arranged in the keyboard area of the portable terminal to form a sensing surface which is coupled with a microprocessor of the portable terminal; the sensing surface receives the slide of an external sensing object; the path of movement of the sensing object generates multi-dimensional coordinate data by the sensing unit to transmit the microprocessor of the portable terminal; the microprocessor of the portable terminal treats the multi-dimensional coordinate data generated by the path of movement to convert into the movement of a cursor on a display device of the portable terminal, thereby, the rolling of menu items is controlled; the keystroke is pressed downwards to select the required menu items. The sensing type keyboard used for a portable terminal supplies the function of rolling checking and selecting of the menu items, and meanwhile, the original structure of the appearance of a cell phone is kept and the original function of a digit keyboard of the cell phone does not lose.
Description
Technical field
The utility model relates to electronic technology field, and particularly user interface device is a kind of inductive keyboard that is used for portable terminal concretely.
Background technology
Along with development of Communication Technique, mobile phone is a kind of as portable terminal, has become dark popular means of communication.Mobile phone along with user's needs just towards miniaturization, hommization, variation, intellectuality and Informatization Development.Traditional mobile phone is mainly based on conversation.This requirement to user interface device is simple relatively.Mobile phone key keyboard based on the electric mechanical switch principle has been well positioned to meet requirement.This keyboard generally includes " 0-9 " ten numeral/alphabet keys, and the several function key.The button below is provided with spring caps, and after button was pressed, the contact of the conductive layer of spring caps was also connected electric switch.The button push action is accepted the back spring caps from the meeting original position of moving, and forms tactile feedback, and prompting user actuation of keys is finished.The electric mechanical switch technology that keyboard uses has been sound, and is easy to realize dependable performance.Yet along with mobile intelligent and informationalized development, input of mobile phone literal and canned data are more and more, and this has proposed new requirement to user interface device.And the literal of non-letter that input characters is especially imported as Chinese on the conventional mobile phone key board is the very thing of difficulty of part.Along with increasing sharply of cellphone directory clauses and subclauses, for example have 500, even the novel mobile phone of 1000 phone book entries capacity becomes generally, check that by pushing required clauses and subclauses become very inconvenient based on traditional four-way navigation key of electric mechanical switch principle.
Various novel user interface devices are applied on the mobile phone.The touch-screen that for example has hand-write recognition function also is used in input characters on the mobile phone.Two kinds of popular touch-screens are respectively resistive touch screen and capacitive touch screen at present, and resistive touch screen is to be made of deformable resistance film of one deck and the fixing resistance film of one deck, and is middle isolated by air.Its principle of work is: when with pen or finger contact touch-screen, the upper resistors compressive deformation also contact with lower resistors, the position that the lower resistors film just can induce or point.Second kind is the capacitive touch screen technology, and the principle of work of capacitive touch screen is the same substantially with resistive touch screen, it mainly be by writing pencil when substrate is exerted pressure, the position of writing pencil is located in the change of capacitance.This novel user interface device of touch-screen has well solved the problem of literal input.User interface also is touch.Check that required clauses and subclauses only with hand writes pen and tap these clauses and subclauses that show on the touch-screen.Not excessive clauses and subclauses are a lot, can't turn over screen and still make things convenient for by traditional four-way navigation key of pushing based on the electric mechanical switch principle when a screen show.Yet, in order to keep the small and exquisite of mobile phone profile, have only a touch-screen in these class mobile phones designs of great majority and omitted key board.Also can be used for showing a dummy keyboard on the touch-screen, such design, the user just needs to click the virtual key that shows on touch-screen and dials.Dummy keyboard does not provide tactile feedback, and the user can feel to use inconvenience usually, and is easy to generate faulty operation.Also have the existing touch-screen of some mobile phones that key board is arranged again, the unavoidable volume of such mobile phone is big, carries inconvenience.In a word, touch-screen is difficult to well satisfy simultaneously number dialing telephone call, literal input, information inspection, and the requirement of miniaturization.
US2003025679, EP1197835 disclose similar user interface device, and the design that has touch pad and key board is simultaneously improved.Touch pad directly is contained in below the key board.The function of key board keeps, and number dialing telephone call is very convenient.Contactless touch pad can provide hand-write recognition function input characters on mobile phone simultaneously.And contactless touch pad can provide similar mouse function.When finger slided on contactless touch pad, controllable cursor moved on display screen.Because the requirement of mobile phone miniaturization, the touch pad area can not be very big.The rolling that moving cursor carries out menu entries on touch pad is checked and is selected and inconvenient like this.Contactless touch pad is very thin, does not increase the mobile phone overall volume.But touch pad and combining of keyboard machinery but are not easy on Project Realization.For the electric mechanical switch of key board is able to work,, on touch pad, all to make a call to a hole accordingly at each button.Like this during pressing keys, thereby the machinery of button is leant on and just can be passed touch pad smoothly and press spring caps.But the key board of each mobile phone design is also inequality, causes the porose touch pad need be all different at each mobile phone.Thereby cause the increase of processed complex degree and production cost.Contactless touch pad is made up of several directions X leads and Y direction lead.It is crooked that directions X lead and Y direction lead are wanted near each hole.The performance of contactless touch pad is subjected to non-linear effects very big.The difference of the keyboard Designing of each mobile phone causes the flexibility of the directions X lead and the Y direction lead of contactless touch pad, and distance between centers of tracks is all different.In order to address the above problem by compensation (OFFSET), it is complicated that contactless touch pad IC becomes, even need be all different at each mobile phone.Thereby cause the increase of processed complex degree and production cost.In order to solve key board problem backlight, contactless touch pad need use transparent material, thereby causes the further increase of processed complex degree and production cost.
US2003095096, WO03088176 disclose similar user interface device, and finger realize that the linearity of menu entries is rolled, thereby conveniently a large amount of clauses and subclauses checks fast by the rolling on a kind of circular position induction device of sealing.But this user interface device does not have keypress function, and irrelevant with the operation of button.The meeting of application increases volume and cost on mobile phone, and unrealistic.
The utility model content
The purpose of this utility model is, a kind of inductive keyboard that is used for portable terminal is provided, and when providing the menu entries rolling to check selection function, keeps the original contour structures of mobile phone, does not also lose the original function of numeric keyboard of mobile telephone.
The technical solution of the utility model is:
A kind of inductive keyboard that is used for portable terminal, the keyboard area that at least one sensing unit is arranged on described portable terminal forms sensitive surface; The microprocessor of described sensitive surface and portable terminal is coupled;
Adopt an inductor on described sensitive surface, to slide, thereby make the movement locus of described inductor produce the multidimensional coordinate data by sensing unit;
The microprocessor of portable terminal is handled the multidimensional coordinate data that described movement locus produces, and is converted into cursor moving on the display device of portable terminal, thus the rolling of Control-Menu clauses and subclauses; Pressing keys is selected required menu entries.
Described sensing unit comprises: electric capacity, promptly described sensing unit are to produce the multidimensional coordinate data by measuring changes in capacitance.
Described sensing unit comprises resistance, and promptly described sensing unit is the variation generation multidimensional coordinate data by measuring resistance.
Described sensing unit comprises inductance, and promptly described sensing unit is the variation generation multidimensional coordinate data by inductance measuring.
Described sensing unit comprises impedance, and promptly described sensing unit is to produce the multidimensional coordinate data by the variation of measuring impedance.
At least one button of described sensing unit and portable terminal keyboard is coupled.
At least one button of described sensing unit and portable terminal keyboard is coupled and refers to: described sensing unit circuit and portable terminal keyboard circuit are coupled.
At least one button of described sensing unit and portable terminal keyboard is coupled and refers to: a plurality of keyboard mechanical members of described sensing unit mechanical component and portable terminal keyboard are coupled.
Described sensing unit is distributed in same plane.
Described sensing unit is distributed in Different Plane.
Described sensing unit is that conductive material constitutes.
The movement locus that mechanical slot guides described inductor is set on described sensitive surface.
Described mechanical slot is approximate closed circle, and the movement locus that guides described inductor is the continuous approximation closed circle.
Described mechanical slot has haptic feedback functions.
Described sensing unit is arranged on the surface of portable terminal keyboard and the keyboard below the surface between the button and button, thereby forms sensitive surface.
Described sensing unit is printed to and is fit to be printed on the shape that becomes a sensor block in the keyboard area.
Described sensing unit is printed to rectangle, circle, ellipse, triangle, polygon or is fit to be printed on the shape that becomes a sensor block in the keyboard area.
The sensing unit of choosing identical or different shape is printed as the dot matrix net of sensing unit in described keyboard area.
Each sensing unit is the node in the described dot matrix net.
The density of described dot matrix net is depended in the sensitivity of described sensitive surface.
Described keyboard area has backlight.
On the display device of cursor, move, thereby when causing the rolling of menu entries, portable terminal produces sound feedback at portable terminal.
Described portable terminal is a mobile phone.
The beneficial effects of the utility model are, a kind of inductive keyboard that is used for portable terminal is provided, and when providing the menu entries rolling to check selection function, keep the original contour structures of mobile phone, also do not lose the original function of numeric keyboard of mobile telephone.
Description of drawings
Fig. 1 is the piece figure of portable terminal end structure of the present utility model;
Fig. 2 forms the floor map of induction keyboard by the capacitive induction cell matrix for the utility model;
Fig. 3 a is that the utility model is applied to one of capacitive induction unit printed patterns synoptic diagram of mobile phone;
Fig. 3 b is two of the utility model capacitive induction unit printed patterns synoptic diagram of being applied to mobile phone;
Fig. 3 c is three of the utility model capacitive induction unit printed patterns synoptic diagram of being applied to mobile phone;
Fig. 4 forms the dissection surface synoptic diagram of induction keyboard by the capacitive induction unit for the utility model;
Fig. 5 comprises the mobile phone induction keyboard design diagram of induction navigation feature key for the utility model is a kind of;
Fig. 6 is a kind of mobile phone induction keyboard design diagram that comprises the closed circle mechanical slot of the utility model;
Fig. 7 is the utility model capacitive induction cell matrix and complete electric coupling circuit and microcontroller circuit connection diagram.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model:
The utility model provides a kind of induction keyboard that is used for portable terminal, and Fig. 1 is the piece figure of for example portable terminal end structure described in the utility model.Portable terminal comprises 120, one induction keyboards of 100, one storeies of a microprocessor (MPU), 150, one displays 130 of 140, one complete electric coupling circuits and a communication interface 110.Display device 130 is used for character display, menu entries and various information.Communication interface 110 can be any device that includes transceiver configuration, and the user can by this communication interface 110 and other portable terminals or network communicates, and the communication interface 110 that for example has transceiver can communicate with cordless communication network.Capacitive induction cell matrix and complete electric coupling circuit and microcontroller circuit connection diagram have been shown among Fig. 7.
Fig. 2 forms the floor map of induction keyboard by the capacitive induction cell matrix for the utility model; Each capacitive induction unit 210 is to use the materials, printed on that can conduct electricity on printed circuit board (PCB).For example each capacitive induction unit can be made of according to specific pattern a pair of non-touching copper lines.Form coupling capacitance between this a pair of non-touching lead.Each capacitive induction unit respectively connects two orthogonal leads, the lead of X and Y direction.The dot matrix of having represented an example 9 * 7 among Fig. 2, certainly, described capacitive induction unit dot matrix also can have other specifications, here just has been not described in detail.The lead of X and Y direction is disconnected at the node place of dot matrix.This can stamp insulation course between the lead of X and Y direction, thereby the lead of X and Y direction is disconnected at the node place of dot matrix by at the node place.The mode of line of also can burrowing on printed circuit board (PCB) realizes.This mode is that ripe printed circuit board (PCB) is made prior art, has not just described in detail at this.In the accompanying drawing, Fig. 3 a, Fig. 3 b, Fig. 3 c are respectively three kinds of capacitive induction unit printed patterns synoptic diagram that the utility model is applied to mobile phone, and the structure of these three kinds of patterns can have the application of various ways.These three kinds of printed patterns have reasonable on state characteristic and coupling capacitance.Certainly, also can there be other form patterns described capacitive induction unit, here just has been not described in detail.Each capacitive induction unit in the utility model is the shown pattern of printing cost figure all, has so just formed the dot matrix net of capacitive induction described in the utility model unit.Under normal circumstances, two electric wires that are made of conductive material are disconnected.
The dot matrix that forms in the capacitive induction unit adds that on the net mechanical component forms induction keyboard.Only need partition capacitance formula sensing unit to be carried out the mechanical component that spring caps is characteristics.The upper surface of these mechanical components is printed on numeral and thereby letter character forms sensor key.Concrete scheme as shown in Figure 4.Fig. 4 forms the dissection surface synoptic diagram of induction keyboard by capacitive induction unit 210 for the utility model.When the button on the downward pressing keys mechanical surface 430 of finger, the mechanical post 420 of button pushes spring caps 440 mutually down, and adversary's finger-type becomes resistance.Spring caps 440 inside surfaces are printed on conductive layer, and each capacitive induction unit that touches forms and is electrically connected the also X of this capacitive induction unit of conducting and the lead of Y direction on conductive layer and the printed circuit board (PCB) (PCB) 400.By scanning, electric coupling circuit 150 and microprocessor 100 judge that this button is pressed fully, and carry out corresponding function.When finger unclamped, the elastic webbing motivation tool post 420 of spring caps 440 made it to have tactile feedback with the button pop into position.
When finger slided on induction keyboard, by scanning, electric coupling circuit can be reported the capacitance size of each sensing unit of microprocessor (MCU) fully.By calculating the capacitance variation of each sensing unit, calculate the center of gravity of variation again, can make at each finger position constantly.Thereby make the movement locus of finger produce the multidimensional coordinate data by sensing unit.
Fig. 5 comprises the mobile phone induction keyboard design diagram of induction navigation feature key for the utility model is a kind of; Wherein, this mobile phone comprises: cursor up down motion track 501, finger rotary motion trace 502, deletion/cancel key 503, selection/acknowledgement key 504, numeral/letter key 505, finger upper and lower translation track 506, finger left and right sides translation track 507, touch induction keyboard 508, rotation slot 509, power switch key 510, current cursor prompting 511.On touch induction keyboard 508, make the function that various sliding actions are realized the navigation feature key by finger.The movement locus of linear slide action can be represented with straight-line equation:
X＝X
0+V
xt，
Y＝Y
0+V
yt。
(X wherein
0, Y
0) for pointing starting point coordinate, (X
0, Y
0) value arbitrarily, promptly line can be from the arbitrfary point.V
X, V
Y, be the speed component of linear slide.
Right translation:
X＝X
0+V
xt V
x＞0
Y＝Y
0 V
y＝0
Line speed can calculate according to the track of line.In fact track is made of the series of points coordinate: at selected t constantly
0, t
1, t
2... t
n, the coordinate (X of record contact
0, Y
0), (X
1, Y
1), (X
2, Y
2) ... (X
n, Y
n).In theory, translation requires Y
n=Y
N-1=... Y
2=Y
1=Y
0Actual path has little departing from the Y direction, but works as | Y
i-Y
I-1|＜＜| X
i-X
I-1| the time, can think rules has only X-velocity component V
IxPromptly be calculated as follows: V
i=V
Ix=(X
i-X
I-1)/(t
i-t
I-1), i=1,2 ... n.The irrelevance that allows can be determined according to experiment.
Left:
X＝X
0+V
xt V
x＜0
Y＝Y
0 V
y＝0
Left line speed can calculate according to the track of line, and method is the same with the right translation situation, but V
iTranslation on＜0:
X＝X
0 V
x＝0
Y＝Y
0+V
yt V
y＞0
Following translation:
X＝X
0 V
x＝0
Y＝Y
0+V
yt V
y＜0
The speed calculation method of upper and lower translation is identical with left and right sides translation.When the irrelevance of directions X in allowed band, can think that line vertical speed V is calculated as follows: V
i=V
IY=(Y
i-Y
I-1)/(t
i-t
I-1), i=1,2 ... n.
With translation functions under the navigation feature key is example, and the display screen of mobile phone shows each clauses and subclauses of cellphone directory among Fig. 5, current cursor prompting clauses and subclauses 3, and promptly name 3.When finger at induction keyboard during to lower slider, movement locus calculates according to aforesaid equation by microprocessor 100, judges translation down, and the linearity that is converted to cursor moves, cursor moves down successively, cursor moving speed is the line function of point-to-point speed down.V
m＝f(V
iY)。Last cursor is parked on the clauses and subclauses of desiring to check.Push a button this moment arbitrarily, can select these clauses and subclauses, enters the details of name entries, for example, name, phone, or the like.Can't show at a screen as all clauses and subclauses, following translation functions automatic page turning, following translation cursor continues to be moved downward to the clauses and subclauses of nextpage.The last translation of navigation feature key, left and right sides translation functions working method is similar, does not just describe in detail at this.
The rotating function sensor key can be realized by circular mechanical slot is set on induction keyboard continuously.There is a button at the closed circle mechanical slot center of Fig. 5.Integral body is separated distribution with other sensor keys.Fig. 6 is a kind of mobile phone induction keyboard design diagram that comprises the closed circle mechanical slot of the utility model.Wherein, this mobile phone comprises: cursor up down motion track 601, deletion/cancel key 602, numeral/letter key 603, touch induction keyboard 604, rotation slot 605, finger rotary motion trace 606, power switch key 607, current cursor prompting 608.The closed circle mechanical slot is set between numeral/alphabetical sensor key, thereby saves the area of induction keyboard more, saves the volume of mobile phone.
When rotating continuously in the closed circle mechanical slot of finger at induction keyboard, the line track is a circumference.Here the angle coordinate system of migrating is more convenient.As at moment t
iContact coordinate is (X
i, Y
i), then:
Radius R
i=(X
i 2+ Y
i 2)
1/2
COS Ψ
i=X
i/ R
i, angle Ψ is calculated in inverting thus
i=arcos (X
i/ R
i), Ψ
I-1=arcos (X
I-1/ R
I-1)
Angular velocity Φ
i=(Ψ
i-Ψ
I-1)/(t
i-t
I-1)
When rotating continuously in the closed circle mechanical slot of finger at induction keyboard, movement locus calculates according to aforesaid equation by microprocessor 100, judges that circumference rotates, and the linearity that is converted to cursor moves.As clockwise rotate, then cursor moves down successively, rotates as inhour, and then cursor moves up successively, and cursor moving speed is the function of rotational angular velocity.V
m＝f(Φ
i)。Last cursor is parked on the clauses and subclauses of desiring to check.Push a button this moment arbitrarily, can select these clauses and subclauses, enters the details of name entries, for example, name, phone, or the like.In the design of Fig. 5, the button that can push closed circle mechanical slot center is realized the function of selection/affirmation.Can't show at a screen as all clauses and subclauses, rotating function automatic page turning, as clockwise rotate, then cursor successively downwards the clauses and subclauses of one page move, rotate as inhour, then cursor moves to the clauses and subclauses of page up successively.Can carry out continuously because finger rotates, compare, carry out checking of a large amount of clauses and subclauses by the utility model moving cursor and become convenient with the mode of repeatedly pushing traditional four-way navigation key.Speed or acceleration that while rotates based on finger, but the cursor fast moving makes checking fast of a large amount of clauses and subclauses become convenient.
The beneficial effects of the utility model are, when providing the menu entries rolling to check selection function, keep the original contour structures of mobile phone, also do not lose the original function of numeric keyboard of mobile telephone, and reduce the cost of raw material of mobile phone.
Above embodiment only is used to the utility model is described but not is used to limit the utility model.
Claims (23)
1. an inductive keyboard that is used for portable terminal is characterized in that, the keyboard area that at least one sensing unit is arranged on described portable terminal forms sensitive surface; The microprocessor of described sensitive surface and portable terminal is coupled;
Described sensitive surface receives the slip of outside inductor, and the movement locus of described inductor is produced the microprocessor that the multidimensional coordinate data send described portable terminal to by sensing unit;
The microprocessor of portable terminal is handled the multidimensional coordinate data that described movement locus produces, and is converted into cursor moving on the display device of portable terminal, thus the rolling of Control-Menu clauses and subclauses; Pressing keys is selected required menu entries.
2. the inductive keyboard that is used for portable terminal according to claim 1, described sensing unit comprises: electric capacity, described sensing unit produces the multidimensional coordinate data by measuring changes in capacitance.
3. the inductive keyboard that is used for portable terminal according to claim 1, described sensing unit comprises resistance, described sensing unit produces the multidimensional coordinate data by the variation of measuring resistance.
4. the inductive keyboard that is used for portable terminal according to claim 1, described sensing unit comprises inductance, described sensing unit produces the multidimensional coordinate data by the variation of inductance measuring.
5. the inductive keyboard that is used for portable terminal according to claim 1, described sensing unit comprises impedance, described sensing unit produces the multidimensional coordinate data by the variation of measuring impedance.
6. the inductive keyboard that is used for portable terminal according to claim 1, at least one button of described sensing unit and portable terminal keyboard is coupled.
7. the inductive keyboard that is used for portable terminal according to claim 6, and at least one button of described sensing unit and portable terminal keyboard is coupled and refers to: described sensing unit circuit and portable terminal keyboard circuit is coupled.
8. the inductive keyboard that is used for portable terminal according to claim 6, and at least one button of described sensing unit and portable terminal keyboard is coupled and refers to: a plurality of keyboard mechanical members of described sensing unit mechanical component and portable terminal keyboard is coupled.
9. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that described sensing unit is distributed in same plane.
10. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that described sensing unit is distributed in Different Plane.
11. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that, described sensing unit is that conductive material constitutes.
12. the inductive keyboard that is used for portable terminal according to claim 1 is provided with the movement locus that mechanical slot guides described inductor on described sensitive surface.
13. the inductive keyboard that is used for portable terminal according to claim 12, described mechanical slot is approximate closed circle, and the movement locus that guides described inductor is the continuous approximation closed circle.
14. the inductive keyboard that is used for portable terminal according to claim 12, described mechanical slot has haptic feedback functions.
15. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that, described sensing unit is arranged on the surface of portable terminal keyboard and the keyboard below the surface between the button and button, thereby forms sensitive surface.
16. the inductive keyboard that is used for portable terminal according to claim 15 is characterized in that, described sensing unit is printed to and is fit to be printed on the shape that becomes a sensor block in the keyboard area.
17. the inductive keyboard that is used for portable terminal according to claim 16, it is characterized in that described sensing unit is printed to rectangle, circle, ellipse, triangle, polygon or is fit to be printed on the shape that becomes a sensor block in the keyboard area.
18. the inductive keyboard that is used for portable terminal according to claim 17 is characterized in that, the sensing unit of choosing identical or different shape is printed as the dot matrix net of sensing unit in described keyboard area.
19. the inductive keyboard that is used for portable terminal according to claim 18 is characterized in that, each sensing unit is the node in the described dot matrix net.
20. the inductive keyboard that is used for portable terminal according to claim 18 is characterized in that the density of described dot matrix net is depended in the sensitivity of described sensitive surface.
21. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that described keyboard area has backlight.
22. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that, move on the display device of cursor at portable terminal, thereby when causing the rolling of menu entries, portable terminal produces sound feedback.
23. the inductive keyboard that is used for portable terminal according to claim 1 is characterized in that, described portable terminal is a mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200772583U CN2758855Y (en) | 2004-08-12 | 2004-08-12 | Induction keyboard for portable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200772583U CN2758855Y (en) | 2004-08-12 | 2004-08-12 | Induction keyboard for portable terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758855Y true CN2758855Y (en) | 2006-02-15 |
Family
ID=36078993
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2004200772583U Expired - Fee Related CN2758855Y (en) | 2004-08-12 | 2004-08-12 | Induction keyboard for portable terminal |
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| CN (1) | CN2758855Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007107099A1 (en) * | 2006-03-21 | 2007-09-27 | Jia Xing Shunon Electronics Technology Co. Ltd. | Handset keys with circular plate structure |
| CN101035148B (en) * | 2006-03-10 | 2010-12-15 | 三星电子株式会社 | Method and apparatus for selecting menu in portable terminal |
| CN101488049B (en) * | 2008-01-16 | 2011-12-28 | 宏达国际电子股份有限公司 | Electronic device and method for operating application program on electronic device |
| CN102439852A (en) * | 2009-04-29 | 2012-05-02 | 索尼爱立信移动通讯有限公司 | Mobile phone with improved keyboard scanning and component reduction and method |
| CN108304711A (en) * | 2018-02-02 | 2018-07-20 | 惠州Tcl移动通信有限公司 | Touch unlocking method, storage device and the mobile terminal of mobile terminal |
| US10510097B2 (en) | 2011-10-19 | 2019-12-17 | Firstface Co., Ltd. | Activating display and performing additional function in mobile terminal with one-time user input |
-
2004
- 2004-08-12 CN CNU2004200772583U patent/CN2758855Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035148B (en) * | 2006-03-10 | 2010-12-15 | 三星电子株式会社 | Method and apparatus for selecting menu in portable terminal |
| WO2007107099A1 (en) * | 2006-03-21 | 2007-09-27 | Jia Xing Shunon Electronics Technology Co. Ltd. | Handset keys with circular plate structure |
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