CN104657020A - Touch positioning method and system for combined projective capacitive and surface capacitive screen - Google Patents
Touch positioning method and system for combined projective capacitive and surface capacitive screen Download PDFInfo
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- CN104657020A CN104657020A CN201510087204.8A CN201510087204A CN104657020A CN 104657020 A CN104657020 A CN 104657020A CN 201510087204 A CN201510087204 A CN 201510087204A CN 104657020 A CN104657020 A CN 104657020A
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- touch
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch positioning method and system for a combined projective capacitive and surface capacitive screen. The touch positioning method comprises the following steps: after detecting that a user executes touch operation, obtaining the numbers of electrodes triggered by the current touch operation in a plurality of single electrodes which are arranged in parallel in the touch screen, and obtaining vertical coordinates of touch points corresponding to the current touch operation according to the numbers of the electrodes and a preset Y-shaft positioning algorithm; when an electric field of the touch screen is balanced, obtaining current at receiving ends and emitting ends of the electrodes triggered by the current touch operation, and obtaining transverse coordinates according to the current at the receiving ends and the emitting ends and a preset X-shaft positioning algorithm; positioning the touch points according to the vertical coordinates and the transverse coordinates of the touch points. The touch positioning method and system can be used for accurately positioning the touch operation by obtaining the numbers of the electrodes and the current at the receiving ends and the emitting ends.
Description
Technical field
The present invention relates to mobile communication technology field, in particular the touch localization method of a kind of projecting type capacitor and surface capacitance comprehensive screen and system.
Background technology
, there is increasing individual layer touch scheme, as illustrated in figs. ia and ib, be respectively the schematic diagram of " T " font individual layer electric capacity and triangular single-layer electric capacity in popular along with projecting type capacitor touch-control.But all individual layer touch scheme all do not depart from the reprocessing process of conducting film, in the process of processing process, then there is chemical etching and chemical cleaning and the secondary pollution that produces.And, after still cannot realizing directly shaping conducting film being carried out secondary film coating at present, precise positioning is carried out to the touch point on touch-screen.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide touch localization method and the system of a kind of projecting type capacitor and surface capacitance comprehensive screen, be intended to solve the defect of after cannot realizing directly shaping conducting film being carried out secondary film coating in prior art, the touch point on touch-screen being carried out to precise positioning.
Technical scheme of the present invention is as follows:
A touch localization method for projecting type capacitor and surface capacitance comprehensive screen, wherein, said method comprising the steps of:
A, detect that user sends touch operation after, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation;
B, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets;
C, according to the longitudinal coordinate of described touch point and lateral coordinates, touch point to be positioned.
The touch localization method of described projecting type capacitor and surface capacitance comprehensive screen, wherein, described steps A specifically comprises:
A1, detect that user sends touch operation after, obtain current touch operate in trigger in multiple single electrode that be arranged in parallel in touch-screen electrode numbering;
A2, described electrode numbering be multiplied by the single electrode pixel value that pre-sets and add the induction deviate pre-set, obtaining the longitudinal coordinate of the corresponding touch point of current touch operation.
The touch localization method of described projecting type capacitor and surface capacitance comprehensive screen, wherein, described step B specifically comprises:
B1, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode;
B2, by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation.
The touch localization method of described projecting type capacitor and surface capacitance comprehensive screen, wherein, also comprises before described steps A:
S, pre-set X-axis location algorithm for obtaining touch point lateral coordinates, for obtaining the Y-axis location algorithm of touch point longitudinal coordinate and the induction deviate for compensating touch point longitudinal coordinate error.
A touching and positioning system for projecting type capacitor and surface capacitance comprehensive screen, wherein, comprising:
Longitudinal coordinate acquisition module, after detecting that user sends touch operation, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation;
Lateral coordinates acquisition module, for when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets;
Locating module, for positioning touch point according to the longitudinal coordinate of described touch point and lateral coordinates.
The touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, wherein, described longitudinal coordinate acquisition module specifically comprises:
Electrode numbering acquiring unit, after detecting that user sends touch operation, obtains current touch and operates in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen;
Longitudinal coordinate positioning unit, for described electrode numbering being multiplied by the single electrode pixel value that pre-sets and adding the induction deviate pre-set, obtains the longitudinal coordinate of the corresponding touch point of current touch operation.
The touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, wherein, described lateral coordinates acquisition module specifically comprises:
Electric current acquisition module, for when touch-screen electric field balances, obtains arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode;
Lateral coordinates positioning unit, for by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation.
The touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, wherein, also comprises:
Module is set, for pre-setting X-axis location algorithm for obtaining touch point lateral coordinates, for obtaining the Y-axis location algorithm of touch point longitudinal coordinate and the induction deviate for compensating touch point longitudinal coordinate error.
The invention provides touch localization method and the system of a kind of projecting type capacitor and surface capacitance comprehensive screen, method comprises: after detecting that user sends touch operation, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation; When touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets; According to the longitudinal coordinate of described touch point and lateral coordinates, touch point is positioned.The present invention, by obtaining the electrode numbering of institute trigger electrode, arrival current and transmitting terminal electric current, realizes the precise positioning to touch operation.
Accompanying drawing explanation
Fig. 1 a and Fig. 1 b is respectively the schematic diagram of " T " font individual layer electric capacity and triangular single-layer electric capacity.
Fig. 2 is the process flow diagram of the touch localization method preferred embodiment of projecting type capacitor of the present invention and surface capacitance comprehensive screen.
Fig. 3 is the schematic diagram of described projecting type capacitor of the present invention and surface capacitance comprehensive screen.
Fig. 4 is corner current diagram when electric field balances again when surface capacitance screen is touched in prior art.
Fig. 5 is the structured flowchart of the touching and positioning system preferred embodiment of projecting type capacitor of the present invention and surface capacitance comprehensive screen.
Embodiment
The invention provides touch localization method and the system of a kind of projecting type capacitor and surface capacitance comprehensive screen, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 2, Fig. 2 is the process flow diagram of the touch localization method preferred embodiment of projecting type capacitor of the present invention and surface capacitance comprehensive screen.As shown in Figure 2, it comprises the following steps:
Step S100, detect that user sends touch operation after, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation.
In embodiments of the invention, it is the location of the touch longitudinal coordinate to a kind of projecting type capacitor and surface capacitance comprehensive screen.Wherein, surface capacitance screen (SCT), its structure is ITO monolithic glass, energising all its surface is a uniform electric field, when finger touch, owing to belonging to conductor, can ITO surface field be caused to change by absorption portion electric current, caught by controller and calculate the position touched.And projecting type capacitor screen (PCT), its structure has a variety of, as G/G, G/F/F etc., technique and use equipment all different, lower floor has the grid be made up of X and Y two coordinates, during finger touch, touch-screen can absorb the faint electric current of finger and change its electric charge, then is caught by controller and calculate the position touched.Surface capacitance screen and projecting type capacitor screen concerning difference maximum user are exactly: surface capacitance screen only has single-point touch, projecting type capacitor screen support multi-point touch.Concrete, as shown in Figure 3, be made up of in described projecting type capacitor of the present invention and surface capacitance comprehensive screen multiple single electrode be arranged in parallel, and each unipolar one end connects for radiating circuit, one end connects receiving circuit.
Step S200, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets;
When touch-screen detecting the touch operation of user, the unipolar transmitting terminal electric current be then triggered and arrival current all change, and the present invention determines the lateral coordinates of touch point just by the arrival current and transmitting terminal electric current obtaining current touch operation institute trigger electrode.
Further, the idiographic flow obtaining the longitudinal coordinate of touch point in described step S100 comprises:
Step S101, detect that user sends touch operation after, obtain current touch operate in trigger in multiple single electrode that be arranged in parallel in touch-screen electrode numbering.
Step S102, described electrode numbering be multiplied by the single electrode pixel value that pre-sets and add the induction deviate pre-set, obtaining the longitudinal coordinate of the corresponding touch point of current touch operation.
In the present embodiment, each single electrode all pre-sets single electrode pixel value Pixel, and determines unipolar induction deviation value P by repeatedly testing
shelft, therefore operate in when obtaining current touch the electrode numbering C triggered in multiple single electrode that be arranged in parallel in touch-screen
electrodeafter, according to Y=Pixel*C
electrode+ P
shelftdetermine the longitudinal coordinate of the corresponding touch point of current touch operation.Owing to adding unipolar induction deviation value P in Y-axis location algorithm
shelft, improve the accuracy of longitudinal coordinate location, make more accurate positioning.
Further, the idiographic flow obtaining the lateral coordinates of touch point in described step S200 comprises:
Step S201, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode.
Step S202, by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation.
In prior art, in the location of surface capacitance touch-screen as shown in Figure 4, when four angles of touch-screen all keep electric field to balance, electric current is 0.When there being finger touch, the electric current at each angle all changes, and occurs that electric field distributes and again balances.Now, the electric current at four angles is i
01, i
02, i
03and i
04, according to the location algorithm of surface capacitance touch-screen, the lateral coordinates of the corresponding touch point of current touch operation is Pixel*((i
01+ i
04-i
02-i
03)/(i
01+ i
02+ i
03+ i
04)), longitudinal coordinate is Pixel*((i
04+ i
03-i
01-i
02)/(i
01+ i
02+ i
03+ i
04)), wherein Pixel is single electrode pixel value.Lateral coordinates and longitudinal coordinate are not compensated due to during location, positioning result may be caused to there is error, have impact on the precise positioning to touch operation.
In the present embodiment, when touch-screen electric field balances, due to a strip can be reduced in described projecting type capacitor and surface capacitance comprehensive screen, then without the need to equally obtaining the electric current of corner in image surface capacitance plate, and only need obtain unipolar two ends electric current.When obtaining the arrival current i of current touch operation institute trigger electrode
1and transmitting terminal current i
2after, then pass through Pixel*(i
1/ (i
1+ i
2)) determine that current touch operates the lateral coordinates of corresponding touch point.
Based on said method embodiment, the present invention also provides the touching and positioning system of a kind of projecting type capacitor and surface capacitance comprehensive screen, and as shown in Figure 5, it comprises:
Longitudinal coordinate acquisition module 100, after detecting that user sends touch operation, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation; As detailed above.
Lateral coordinates acquisition module 200, for when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets; As detailed above.
Locating module 300, for positioning touch point according to the longitudinal coordinate of described touch point and lateral coordinates; As detailed above.
Further, in the touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, described longitudinal coordinate acquisition module 100 specifically comprises:
Electrode numbering acquiring unit, after detecting that user sends touch operation, obtains current touch and operates in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen; As detailed above.
Longitudinal coordinate positioning unit, for described electrode numbering being multiplied by the single electrode pixel value that pre-sets and adding the induction deviate pre-set, obtains the longitudinal coordinate of the corresponding touch point of current touch operation; As detailed above.
Further, in the touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, described lateral coordinates acquisition module 200 specifically comprises:
Electric current acquisition module, for when touch-screen electric field balances, obtains arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode; As detailed above.
Lateral coordinates positioning unit, for by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation; As detailed above.
Further, in the touching and positioning system of described projecting type capacitor and surface capacitance comprehensive screen, also comprise:
Module is set, for pre-setting X-axis location algorithm for obtaining touch point lateral coordinates, for obtaining the Y-axis location algorithm of touch point longitudinal coordinate and the induction deviate for compensating touch point longitudinal coordinate error; As detailed above.
In sum, the invention provides touch localization method and the system of a kind of projecting type capacitor and surface capacitance comprehensive screen, method comprises: after detecting that user sends touch operation, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation; When touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets; According to the longitudinal coordinate of described touch point and lateral coordinates, touch point is positioned.The present invention, by obtaining the electrode numbering of institute trigger electrode, arrival current and transmitting terminal electric current, realizes the precise positioning to touch operation.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. a touch localization method for projecting type capacitor and surface capacitance comprehensive screen, is characterized in that, said method comprising the steps of:
A, detect that user sends touch operation after, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation;
B, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets;
C, according to the longitudinal coordinate of described touch point and lateral coordinates, touch point to be positioned.
2. the touch localization method of projecting type capacitor and surface capacitance comprehensive screen according to claim 1, it is characterized in that, described steps A specifically comprises:
A1, detect that user sends touch operation after, obtain current touch operate in trigger in multiple single electrode that be arranged in parallel in touch-screen electrode numbering;
A2, described electrode numbering be multiplied by the single electrode pixel value that pre-sets and add the induction deviate pre-set, obtaining the longitudinal coordinate of the corresponding touch point of current touch operation.
3. the touch localization method of projecting type capacitor and surface capacitance comprehensive screen according to claim 2, it is characterized in that, described step B specifically comprises:
B1, when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode;
B2, by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation.
4. the touch localization method of projecting type capacitor and surface capacitance comprehensive screen according to claim 3, is characterized in that, also comprise before described steps A:
S, pre-set X-axis location algorithm for obtaining touch point lateral coordinates, for obtaining the Y-axis location algorithm of touch point longitudinal coordinate and the induction deviate for compensating touch point longitudinal coordinate error.
5. a touching and positioning system for projecting type capacitor and surface capacitance comprehensive screen, is characterized in that, comprising:
Longitudinal coordinate acquisition module, after detecting that user sends touch operation, obtain current touch and operate in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen, and the Y-axis location algorithm numbered according to described electrode and pre-set obtains the longitudinal coordinate of the corresponding touch point of current touch operation;
Lateral coordinates acquisition module, for when touch-screen electric field balances, obtain arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode, and obtain the lateral coordinates of touch point according to described arrival current, transmitting terminal electric current and the X-axis location algorithm that pre-sets;
Locating module, for positioning touch point according to the longitudinal coordinate of described touch point and lateral coordinates.
6. the touching and positioning system of projecting type capacitor and surface capacitance comprehensive screen according to claim 5, it is characterized in that, described longitudinal coordinate acquisition module specifically comprises:
Electrode numbering acquiring unit, after detecting that user sends touch operation, obtains current touch and operates in the electrode numbering triggered in multiple single electrode that be arranged in parallel in touch-screen;
Longitudinal coordinate positioning unit, for described electrode numbering being multiplied by the single electrode pixel value that pre-sets and adding the induction deviate pre-set, obtains the longitudinal coordinate of the corresponding touch point of current touch operation.
7. the touching and positioning system of projecting type capacitor and surface capacitance comprehensive screen according to claim 6, it is characterized in that, described lateral coordinates acquisition module specifically comprises:
Electric current acquisition module, for when touch-screen electric field balances, obtains arrival current and the transmitting terminal electric current of current touch operation institute trigger electrode;
Lateral coordinates positioning unit, for by described arrival current divided by arrival current and transmitting terminal electric current sum, obtain the lateral coordinates of the corresponding touch point of current touch operation.
8. the touching and positioning system of projecting type capacitor and surface capacitance comprehensive screen according to claim 7, is characterized in that, also comprise:
Module is set, for pre-setting X-axis location algorithm for obtaining touch point lateral coordinates, for obtaining the Y-axis location algorithm of touch point longitudinal coordinate and the induction deviate for compensating touch point longitudinal coordinate error.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087204.8A CN104657020B (en) | 2015-02-25 | 2015-02-25 | The touch localization method and system of projecting type capacitor and surface capacitance comprehensive screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087204.8A CN104657020B (en) | 2015-02-25 | 2015-02-25 | The touch localization method and system of projecting type capacitor and surface capacitance comprehensive screen |
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| CN104657020A true CN104657020A (en) | 2015-05-27 |
| CN104657020B CN104657020B (en) | 2018-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614016A (en) * | 2019-01-11 | 2019-04-12 | 中国联合网络通信集团有限公司 | Touch identification method, device and the electronic equipment of capacitance touch screen |
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| CN2927175Y (en) * | 2006-02-13 | 2007-07-25 | 陈其良 | Lattice touch-controlled screen |
| CN101122838A (en) * | 2006-08-13 | 2008-02-13 | 陈其良 | Active touch control panel display |
| CN101201714A (en) * | 2006-12-11 | 2008-06-18 | 义隆电子股份有限公司 | Touch pad and position sensing method for the same |
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|---|---|
| CN104657020B (en) | 2018-02-13 |
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Effective date of registration: 20220127 Address after: 518052 a501, building D4, TCL Science Park, No. 1001, Zhongshan Park Road, Shuguang community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: Thunderbird innovation technology (Shenzhen) Co.,Ltd. Address before: 516006 Zhongkai hi tech Zone, Huizhou, Guangdong, 86 Chang seven Road West Patentee before: HUIZHOU TCL MOBILE COMMUNICATION Co.,Ltd. |