CN102495690A - Touch detection method, device and mobile terminal - Google Patents
Touch detection method, device and mobile terminal Download PDFInfo
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- CN102495690A CN102495690A CN2011103783067A CN201110378306A CN102495690A CN 102495690 A CN102495690 A CN 102495690A CN 2011103783067 A CN2011103783067 A CN 2011103783067A CN 201110378306 A CN201110378306 A CN 201110378306A CN 102495690 A CN102495690 A CN 102495690A
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Abstract
The invention provides a touch detection method, a touch detection method device and a mobile terminal. The touch detection method is used for detecting the touch operation of the mobile terminal with a first display screen and a second display screen which are arranged back to back, wherein the first display screen and the second display screen share a lateral coil and a longitudinal coil for detecting the touch operation. The touch detection method comprises the steps of: judging whether the touch operation position is switched between the first display screen and the second display screen or not; and changing the scanning direction of the lateral coil or the longitudinal coil when switch is carried out. According to the invention, touch operation can be rapidly detected.
Description
Technical field
The present invention relates to digital data processing field, relate in particular to a kind of touch control detecting method, device and this portable terminal with portable terminal of double screen.
Background technology
Along with popularizing of present portable terminal, in order to satisfy growing user's request, the double screen portable terminal has become a kind of new growth requirement.
Existing double screen portable terminal, its double screen that adopts are two LCDs mostly.Because electric ink screen (EPD) is as studying up a kind of display screen that electronic edition books, document are used; Have clear superiorities such as reading with great visual angle, environmental protection, vision protection, super low-power consumption; Make portable set adopt LCDs and electric ink screen, also continuing to bring out as the scheme of double screen.Because of the high advantage of electromagnetism touch technology bearing accuracy, the design of electromagnetism touch-control input has appearred in existing double screen scheme again.
The existing double screen scheme of using the electromagnetism touch technology; The general back side of adopting two electromagnetic induction antenna plate to be laid in liquid crystal display and electric ink screen respectively; But the design of two antenna plate makes wiring complicated, has also increased the thickness and the design cost of double screen portable terminal.To this defective, the design proposal of the shared electromagnetic induction antenna plate of double screen has appearred immediately, as the electromagnetic induction antenna plate being placed in the middle of electric ink screen and the liquid crystal display again; Through the display screen that range sensor detects current use is set; This scheme has only introduced how to carry out structural design, realizes the purpose of the shared electromagnetic induction antenna plate of double screen, and when using different display screen; How to scan induction antenna and detect touching signals, a problem demanding prompt solution really.
Summary of the invention
For solving the problem that exists in the prior art, the invention provides a kind of touch control detecting method, device and portable terminal.
The present invention provides a kind of touch control detecting method; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; Shared transverse coil and the longitudinal coil that is used to detect touch control operation of said first display screen and said second display screen, said touch control detecting method comprises: whether switch between said first display screen and said second display screen position of judging said touch control operation; Be judged as under the situation of having carried out above-mentioned switching, changing the direction of scanning of said transverse coil or said longitudinal coil.
The present invention also provides a kind of touch control detection device; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; Shared transverse coil and the longitudinal coil that is used to detect touch control operation of said first display screen and said second display screen; Said touch control detection device comprises: decision means, judge whether the position of said touch control operation switches between said first display screen and said second display screen; Change parts, be judged as under the situation of having carried out above-mentioned switching, change the direction of scanning of said transverse coil or said longitudinal coil in said decision means.
The present invention also provides the portable terminal that relates in a kind of above-mentioned touch control detecting method and the device.
The present invention can carry out the detection and the location of touch control operation apace; And to adopting single electromagnetism touch-control module in the double screen portable terminal; Not only can reduce cost, also reduced touch-control module and taken up space, solve double screen and used the how problem of scanning yoke of a cover antenna wires design; Improve sweep velocity and the precision that detects touching signals, had stronger practicality.
Description of drawings
Fig. 1 is the external structure synoptic diagram of the portable terminal with double screen of one embodiment of the invention.
Fig. 2 is the composition structured flowchart of the portable terminal with double screen of one embodiment of the invention.
Fig. 3 is the touch control detecting method synoptic diagram of the portable terminal with double screen of one embodiment of the invention.
Fig. 4 and Fig. 5 are respectively the transmission signal and the synoptic diagram that receives signal of electromagnetism touch-control module.
Fig. 6 shows the positioning principle synoptic diagram of one embodiment of the invention.
Embodiment
The present invention is based on a kind of touch control detecting method and device of double screen portable terminal, and two screens of this portable terminal are respectively electric ink screen and liquid crystal display, and the two is provided with dorsad.
Fig. 1 is the external structure synoptic diagram of the portable terminal with double screen of one embodiment of the invention, and it comprises: LCDs 101, main control module 102, electric ink screen 103.LCDs 101 and electric ink screen 103 are positioned at two sides that are provided with dorsad of portable terminal.LCDs 101 is used for communication office or amusement function (like the function of mobile phone, flat computer, MP4 etc.) such as audio-visual, as: show audio/video file.103 of electric ink screens are mainly used in text reading and use the function of reader (as: e-book etc.).The user selects to use arbitrary display screen as required arbitrarily.102 of main control modules are used for portable terminal is carried out various controls.
Fig. 2 is the composition structured flowchart of the portable terminal with double screen of one embodiment of the invention.This portable terminal comprises master control processing module 201, touch-control module 202, display control module 203, LCD MODULE 204, electric ink display module 205 and supply module 206.Master control processing module 201 comprises CPU, storer, display interface etc., and the operation that is used to control portable terminal is handled, like: storage file, accept user instruction, according to the operation of other modules of user instruction control etc.Touch-control module 202 is used to detect the location of input equipment on LCD MODULE 204 or electric ink display module 205 such as time writer.Display control module 203 is used for driving liquid crystal module 204, electric ink display module 205 video datas and carries out the hand-off process between the two, mainly comprises video card and handover module.LCD MODULE 204 and electric ink display module 205 are LCDs 101 shown in Fig. 1 and electric ink screen 103.Supply module 206 is used for power supply to each module of portable terminal being provided, but those skilled in the art can understand, and also can use outside power supply as portable terminal working power to be provided.In addition, can be according to demand, increase other touch control units that electric capacity, resistance or optical touch element etc. need be placed in each display screen front end respectively at the front end of LCD MODULE 204 and electric ink display module 205.
Touch-control module 202 is an electromagnetism touch-control module, is used for sending signal to the input equipments such as time writer of touch liquid crystal display module 204 or electric ink display module 205, and receives the induced signal that said input equipment produces in response to said signal.This electromagnetism touch-control module comprises mutual vertically disposed transmission coil groups and receiving coil group, is respectively laterally (directions X) coil and vertical (Y direction) coil.Have resonant circuit in input equipment inside such as time writers,, can receive the driving pulse that sends by the transmission coil that sends in the coil groups, and produce the electromagnetic induction signal of fixed frequency when time writer during near electromagnetism touch-control module 202; Receiving coil in the receiving coil group receives the electromagnetic induction signal of time writer generation and exports to master control processing module 201; 201 pairs of said electromagnetic induction signals of master control processing module are handled, thereby obtain the position of touch information of time writer.
Fig. 3 is the touch control detecting method synoptic diagram of the portable terminal with double screen of one embodiment of the invention; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; As stated, shared transverse coil and the longitudinal coil that is used to detect touch control operation of first display screen and second display screen.Through scanning the touch control detection that transverse coil and longitudinal coil can carry out time writer, concrete touch control detecting method can be undertaken by above-mentioned electromagnetism touch-control module.The basic structure of portable terminal is as shown in Figure 1, repeats no more at this.
As shown in Figure 3, in step S1, detect the user and whether carried out touch control operation; When having carried out touch control operation in the use of first display screen of user in double-display screen, then like step S2, transverse coil that scanning is arranged from top to bottom and the longitudinal coil of arranging from left to right, otherwise proceed the detection among the step S1.In one embodiment; In the display screen (for example being LCDs) at the touch control operation place that begins to carry out; With scanning direction transverse coil from top to bottom; With scanning direction longitudinal coil from left to right, mode from top to bottom above-mentioned or from left to right is commonly referred to as " 0-MAX " scan mode.In step S3, whether judges has carried out turning operation to portable terminal.If the user has carried out turning operation to portable terminal and has transferred another display screen of use in the process of using a display screen; Then like step S4; According to the corresponding change transverse coil of direction of turning operation or the scan mode of longitudinal coil, otherwise continue transverse coil and longitudinal coil to be scanned according to the mode among the step S2.In one embodiment; When along left and right directions (or and left and right directions between angle be that 45 degree are with interior direction) upset is during portable terminal; By the scan mode to a left side from right of changing into " MAX-0 " from left to right, the direction of scanning of transverse coil is constant with the scan mode of longitudinal coil; And when along the vertical direction (or and above-below direction between angle be that 45 degree are with interior direction) upset is during portable terminal, the scan mode of transverse coil changed into from top to bottom the scan mode from bottom to top of " MAX-0 ".
Correspondingly; The present invention provides a kind of touch control detection device; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; Shared transverse coil and the longitudinal coil that is used to detect touch control operation of first display screen and second display screen, said touch control detection device comprise decision means and change parts decision means judges whether the position of said touch control operation switches between said first display screen and said second display screen; Change parts and then be judged as under the situation of having carried out above-mentioned switching, change the direction of scanning of said transverse coil or said longitudinal coil in said decision means.
Fig. 4 and Fig. 5 are respectively the transmission signal and the synoptic diagram that receives signal of electromagnetism touch-control module, in one embodiment of this invention, on the directions X of electromagnetism touch-control module, send signal, on the Y direction, receive signal; But the invention is not restricted to this, in another embodiment, on the Y of electromagnetism touch-control module direction, send signal, on directions X, receive signal.
Include the sensor circuit that telefault and electric capacity are formed in the time writer; When the display screen of time writer touch-control portable terminal; Master control processing module 201 is selected the directions X of electromagnetism touch-control module and the coil on the direction in the Y direction; Use frequency selected coil to be encouraged,, make the sensor circuit in electromagnetism touch-control module and the time writer produce induction so that time writer is sent signal as n/one's (f/n) of preset frequency f pulse.On the other direction in directions X and Y direction, master control processing module 201 is also selected a coil, receives the electromagnetic induction signal (frequency of electromagnetic induction signal is about n) in the time writer through this coil, and the amplitude of this electromagnetic induction signal is noted.By that analogy; Master control processing module 201 is sent signal through the coil on the direction (directions X) in select progressively directions X and the Y direction and is fixed the coil reception signal on another direction (Y direction); Just can obtain the amplitude of the electromagnetic induction signal of all coils on selected this direction (directions X); Likewise; The coil that sends signal and this direction of select progressively (directions X) through the coil on the fixing other direction (Y direction) receives signal, just can obtain the amplitude of the electromagnetic induction signal of this direction (directions X) all coils.
In addition, master control processing module 201 is through further analyzing and handle electromagnetic induction signal, can also obtain the relevant information such as inclination angle, pressure about time writer, so that can carry out more comprehensive and fine and smooth processing to trace information.Computing method about relevant informations such as the inclination angle of time writer, pressure are well known to those skilled in the art, so do not giving unnecessary details at this.
Fig. 6 shows the positioning principle synoptic diagram of one embodiment of the invention.In conjunction with Fig. 4 and Fig. 5, at first, confirm the position of time writer on the Y direction.A coil Xi on the first fixedly directions X carries out the transmission of signal; And the receiving coil of scanning Y direction, can obtain amplitude (magnitude of voltage) Vi1, Vi2, Vi3 of the electromagnetic induction signal of coil Yi1 corresponding with coil Xi on the Y direction, Yi2, Yi3 etc. etc. respectively.Near the magnitude of voltage of maximum; The amplitude of electromagnetic induction signal and the position of time writer relation are quafric curve and distribute; As shown in Figure 6; The amplitude Vi7 that supposes the electromagnetic induction signal of coil Yi7 is a maximal value; Then, can confirm a quafric curve, and this quafric curve is exactly the position (Y coordinate) of time writer on the Y direction in the peaked position of Y coordinate direction (amplitude direction) according to the amplitude Vi8 of the electromagnetic induction signal of the amplitude Vi6 of the electromagnetic induction signal of Vi7 and previous coil Yi6 and a back coil Yi8.
Next; Confirm the position of time writer on directions X; Only need this moment the maximum coil Yi7 of the amplitude of Motionless electromagnetic induced signal as receiving coil; The transmission coil of scanning on the directions X, can obtain with on directions X with the amplitude V17 of the electromagnetic induction signal of the X17 of the corresponding coil of coil Yi7, X27, X37 etc., V27, V37 etc., suppose that wherein V57 is a maximal value; Then can obtain the position of time writer pen on directions X, and then determine the exact position of time writer according to method shown in Figure 6.
As stated, this type of mobile terminal screen switching mode has two kinds of upset modes, that is, front and back upsets with about upset.If upset before and after adopting, the scanning radical pros and cons of the coil on the directions X is all identical, and the scanning radical of the coil on the Y direction and front are just in time opposite; If the coil on Y direction scanning radical is constant, then as shown in Figure 5 and since originally in the front during touch-control amplitude Vi7 be maximal value; Maximum along the amplitude on the 7th coil of number (among Fig. 5 from left to right direction for along the number direction) on the Y direction when being the front touch-control, thereby when reverse side carries out touch-control, if carry out touch control operation at the same position place; Then will on the Y direction, detect maximum amplitude on (dextrosinistral direction is a direction reciprocal among Fig. 5) the 7th coil reciprocal, that is, the amplitude maximal value is Vi (K-6); Can make troubles to subsequent treatment; Thereby when the coil on the Y direction positioned, if adopt 0-MAX mode (from top to bottom) to scan at the one side screen, scanning sequency was Y1-YK in Fig. 5; Then scan in the another side preferable employing MAX-0 mode of screen (from bottom to top), scanning sequency is YK-Y1 in Fig. 5; Coil on directions X all can adopt the 0-MAX mode to scan.In like manner,, then when the coil on the directions X is positioned, then on the one side screen, the scanning radical is being positioned, on the another side screen, then adopting the mode of MAX-0 to carry out the location of surface sweeping radical with the 0-MAX mode if upset is switched about adopting; Coil on the Y direction all adopts the 0-MAX mode to scan.
Portable terminal of the present invention only can use a screen simultaneously; When overturning when display screen opening portable terminal of the present invention or with portable terminal; Master control processing module 201 is sent control signal to the electromagnetism touch-control module, switches with the locator meams of control electromagnetism touch-control module or to its locator meams.
Though the described portable terminal of above embodiment comprises an electromagnetism touch-control module, yet, the invention is not restricted to this.In another embodiment of the present invention, portable terminal comprises two electromagnetism touch-control modules, and is that two display screens add the electromagnetism touch-control module respectively; More than two electromagnetism touch-control modules respectively two display screens are carried out independent control, when using different screens, adopts different electromagnetism touch-control modules to control, and need not the switching of the mode that when overturning, positions; And electromagnetism touch control component wherein can be identical or different.
Shared one group of transverse coil of double-display screen of the present invention and longitudinal coil need not respectively two display screens to be connected up respectively, can reduce cost and complexity that portable terminal is made; And owing to can carry out the switching of scan mode according to the upset mode of portable terminal, the present invention can carry out the detection and the location of touch control operation apace.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be disk, CD, ROM (read-only memory) or random access memory etc.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (11)
1. touch control detecting method; It is characterized in that; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; Shared transverse coil and the longitudinal coil that is used to detect touch control operation of said first display screen and said second display screen, said touch control detecting method comprises:
Whether switch between said first display screen and said second display screen position of judging said touch control operation; And
Be judged as under the situation of having carried out above-mentioned switching, changing the direction of scanning of said transverse coil or said longitudinal coil.
2. touch control detecting method according to claim 1; It is characterized in that; The orientation of said transverse coil switches to the position of said touch control operation under another the situation by one in said first display screen and said second display screen on the edge, changes the direction of scanning of said transverse coil.
3. touch control detecting method according to claim 1; It is characterized in that; The orientation of said longitudinal coil switches to the position of said touch control operation under another the situation by one in said first display screen and said second display screen on the edge, changes the direction of scanning of said longitudinal coil.
4. touch control detecting method according to claim 1; It is characterized in that, on said first display screen or said second display screen that said touch control operation takes place first, along the said transverse coil of scanning direction from top to bottom; Along the said longitudinal coil of scanning direction from left to right; Wherein, said transverse coil is arranged along the vertical direction, and said longitudinal coil is arranged along left and right directions.
5. touch control detecting method according to claim 1 is characterized in that, said first display screen is in LCDs and the electric ink screen, and said second display screen is another in LCDs and the electric ink screen.
6. touch control detection device; It is characterized in that; Be used for detecting the touch control operation of the portable terminal that possesses dorsad first display screen that is provided with and second display screen; Shared transverse coil and the longitudinal coil that is used to detect touch control operation of said first display screen and said second display screen, said touch control detection device comprises:
Decision means judges whether the position of said touch control operation switches between said first display screen and said second display screen; And
Change parts, be judged as under the situation of having carried out above-mentioned switching, change the direction of scanning of said transverse coil or said longitudinal coil in said decision means.
7. touch control detection device according to claim 6; It is characterized in that; The orientation of said transverse coil switches to the position of said touch control operation under another the situation by one in said first display screen and said second display screen on the edge, and said change parts change the direction of scanning of said transverse coil.
8. touch control detection device according to claim 6; It is characterized in that; The orientation of said longitudinal coil switches to the position of said touch control operation under another the situation by one in said first display screen and said second display screen on the edge, and said change parts change the direction of scanning of said longitudinal coil.
9. touch control detection device according to claim 6 is characterized in that, also comprises sweep unit; On said first display screen or said second display screen that said touch control operation takes place first; The said sweep unit edge said transverse coil of scanning direction from top to bottom is along the said longitudinal coil of scanning direction from left to right, wherein; Said transverse coil is arranged along the vertical direction, and said longitudinal coil is arranged along left and right directions.
10. touch control detection device according to claim 6 is characterized in that, said first display screen is in LCDs and the electric ink screen, and said second display screen is another in LCDs and the electric ink screen.
11. portable terminal that uses each said touch control detection device among the claim 1-10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110378306.7A CN102495690B (en) | 2011-11-24 | 2011-11-24 | Touch detection method, device and mobile terminal |
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| CN201110378306.7A CN102495690B (en) | 2011-11-24 | 2011-11-24 | Touch detection method, device and mobile terminal |
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| CN102495690A true CN102495690A (en) | 2012-06-13 |
| CN102495690B CN102495690B (en) | 2015-03-11 |
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Cited By (3)
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| CN103529314A (en) * | 2012-07-05 | 2014-01-22 | 瀚宇彩晶股份有限公司 | Touch-control test system and touch-control test method thereof |
| US20220206332A1 (en) * | 2020-11-20 | 2022-06-30 | Fujian Tianquan Education Technology Limited | Double-screen Tablet Computer for Students |
| CN116301416A (en) * | 2022-07-30 | 2023-06-23 | 荣耀终端有限公司 | Touch scanning method, touch screen and electronic equipment |
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