CN102109937B - Locating device and locating method for touch device - Google Patents
Locating device and locating method for touch device Download PDFInfo
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- CN102109937B CN102109937B CN 200910266333 CN200910266333A CN102109937B CN 102109937 B CN102109937 B CN 102109937B CN 200910266333 CN200910266333 CN 200910266333 CN 200910266333 A CN200910266333 A CN 200910266333A CN 102109937 B CN102109937 B CN 102109937B
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Abstract
The invention discloses a locating device and a locating method for a touch device. The locating method for the touch device comprises the following steps of: firstly, providing a controller to set a boundary region on a touch panel of the touch device, and providing a controller to detect whether a peak capacitance detection difference value of a plurality of capacitance detection difference values appears in the boundary region when a touch medium touches the touch panel. Additionally, a controller is provided for performing the scale operation according to the peak capacitance detection difference value and a first adjacent capacitance detection difference value adjacent to the peak capacitance detection difference value, so as to obtain a coordinate of a point of touch of the touch medium.
Description
Technical field
The present invention relates to a kind of locating device and method of contactor control device, particularly relate to a kind of touch point locating device and method of borderline region of contactor control device.
Background technology
Along with making rapid progress of technology, most electronic installation, such as: the electronic installations such as mobile computer, mobile phone or portable media player, dispose contact panel, usually with the input interface as a new generation.Contact panel roughly can be divided into resistance-type, condenser type, infrared-type and ultrasonic formula etc., wherein take electric resistance touch-control panel and capacitance type touch-control panel as modal product.Capacitance type touch-control panel is via finger or conductive material is close or the touching contact panel, and the capacitance of contact panel is changed.When contact panel detects capacitance variation, just can judge the position that finger or conductive material are close or touch, and carry out the corresponding feature operation of touch position.
The location that a kind of computing method of utilizing barycenter are carried out the capacitance type touch-control panel touch point is proposed in the prior art.Below please synchronously with reference to Fig. 1, Fig. 1 shows the schematic diagram that the touching state occurs capacitance type touch-control panel 100.Wherein, capacitance type touch-control panel 100 comprises the detecting unit CIN8～CIN15 of the capacitance detecting difference on Z-axis and the detecting unit CIN0～CIN7 of the capacitance detecting difference on transverse axis.When touch point P1 touched capacitance type touch-control panel 100, capacitance type touch-control panel 100 produced respectively the distribution curve 120,110 of capacitance detecting difference at Z-axis (Y-axis) and transverse axis (X-axis).On Y-axis, be mainly the surveyed area that touches detecting unit CIN14 due to touch point P1.Therefore, the position of the corresponding detecting unit CIN14 of distribution curve 120 of capacitance detecting difference can produce a peak value, can produce the capacitance detecting difference of smaller value at detecting unit CIN13, CIN15.The capacitance detecting difference and the corresponding coordinate figure thereof that utilize detecting unit CIN13～CIN15 to transmit by the formula of so-called centroid calculation, just can obtain the coordinate of touch point P1 on Y-axis.
At this, the formula of so-called centroid calculation can be expressed as follows shown in formula:
Wherein, POS is the coordinate position of detected touch point, and the point of the peak value that touch point produces is corresponding detecting unit CIN
iProduce.C
i-1, C
i, C
i+1Corresponding detecting unit CIN
i-1, CIN
iAnd CIN
i+1The capacitance detecting difference that transmits.P
i-1, P
i, P
i+1Corresponding detecting unit CIN
i-1, CIN
iAnd CIN
i+1The coordinate position of representative.
Yet, when touch point P1 such as Fig. 1 show touch the right hand edge of capacitance type touch-control panel 100 time, generally speaking, only can obtain two capacitance detecting differences that transmitted by detecting unit CIN6, CIN7 on X-axis.The formula that therefore, can't recycle above-mentioned centroid calculation calculates the coordinate of touch point P1 on X-axis.
Summary of the invention
The present invention provides respectively the localization method of two kinds of contactor control devices, goes out at the borderline touch point coordinate of contact panel in order to effective location.
The present invention separately provides respectively two kinds of contactor control devices, goes out at the borderline touch point coordinate of contact panel in order to effective location.
The present invention proposes a kind of localization method of contactor control device, its step comprises: at first, borderline region on the contact panel of controller setting touch device is provided, and when the touch-control medium touches contact panel, whether the peak value capacitance detecting difference that provides controller to detect in a plurality of capacitance detecting differences appears in borderline region.In addition, provide controller to carry out scale operation according to peak value capacitance detecting difference and the first adjacent capacitance detecting difference adjacent with peak value capacitance detecting difference, and use the touch point coordinate that obtains the touch-control medium.
In one embodiment of this invention, the localization method of above-mentioned contactor control device also comprise when peak value capacitance detecting difference be not when appearing in borderline region, provide controller to calculate and obtain touch point coordinate by peak value capacitance detecting difference and two the second adjacent capacitance detecting differences adjacent with peak value capacitance detecting difference.
In one embodiment of this invention, the state that arranges that provides controller to detect illusory capacitance detecting difference also is provided the localization method of above-mentioned contactor control device, and calculates touch point coordinate according to state is set according to illusory capacitance detecting difference, peak value capacitance detecting difference and adjacent peak value capacitance detecting difference.
In one embodiment of this invention, a plurality of the first capacitance detecting differences that provide controller to detect and obtain to produce when the touch-control medium touches non-borderline region on contact panel at least one very first time point also are provided the localization method of above-mentioned contactor control device.Then, majority the second capacitance detecting difference that provides controller to detect and obtain to produce when the touch-control medium is touched borderline region on this contact panel at the second time point.At last, provide controller to calculate illusory capacitance detecting difference according to the first capacitance detecting difference and the second capacitance detecting difference.
In one embodiment of this invention, above-mentioned illusory capacitance detecting difference equals summation poor of the mean value of a plurality of the first capacitance detecting difference summations and the second capacitance detecting difference.
In one embodiment of this invention, above-mentioned illusory capacitance detecting difference equals summation poor of the summation of the first capacitance detecting difference and the second capacitance detecting difference.
In one embodiment of this invention, when wherein putting in the above-mentioned very first time, the touch-control medium moves between the non-borderline region on this contact panel.
In one embodiment of this invention, the localization method of above-mentioned contactor control device also comprises provides temporary storage to store illusory capacitance detecting difference.
The present invention proposes the localization method of another kind of contactor control device, and its step comprises: at first, the borderline region on the contact panel of controller setting touch device is provided, and provides illusory capacitance detecting difference to controller.When the touch-control medium touches this contact panel, whether the peak value capacitance detecting difference that provides controller to detect in a plurality of capacitance detecting differences appears in borderline region, and calculates touch point coordinate according to illusory capacitance detecting difference, peak value capacitance detecting difference and the adjacent peak value capacitance detecting difference adjacent with peak value capacitance detecting difference.
In addition, the present invention proposes a kind of contactor control device, comprises contact panel and controller.Controller couples contact panel, and in order to the borderline region on the contact panel of setting touch device, and when the touch-control medium touches contact panel, whether the peak value capacitance detecting difference that detects in a plurality of capacitance detecting differences appears in borderline region.Controller also carries out scale operation according to peak value capacitance detecting difference and the first adjacent capacitance detecting difference adjacent with peak value capacitance detecting difference, and use the touch point coordinate that obtains the touch-control medium.
The present invention also proposes another kind of contactor control device, comprises contact panel and controller.Controller couples contact panel and receives illusory capacitance detecting difference.Controller is in order to the borderline region on the contact panel of setting touch device.When the touch-control medium touches contact panel, whether the peak value capacitance detecting difference that controller detects in a plurality of capacitance detecting differences appears in borderline region.Controller also calculates touch point coordinate according to illusory capacitance detecting difference, peak value capacitance detecting difference and the adjacent peak value capacitance detecting difference adjacent with peak value capacitance detecting difference.
Based on above-mentioned, illusory capacitance detecting difference is set up in utilization of the present invention, for the touch-control medium touch the borderline region of this contact panel the time, provide not enough capacitance detecting difference to carry out the calculating of touch point coordinate by the illusory capacitance detecting difference of setting up.In addition, when the present invention is not yet effectively set up in illusory capacitance detecting difference, utilize the touch-control medium touch the borderline region of this contact panel the time peak value capacitance detecting difference that obtains and adjacent capacitor detect difference and carry out scale operation, and use the touch point coordinate that obtains the touch-control medium.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 shows the schematic diagram that the touching state occurs capacitance type touch-control panel 100.
Fig. 2 A shows the process flow diagram of an embodiment of the localization method of contactor control device of the present invention.
Fig. 2 B shows the touching view of the contactor control device 200 of Fig. 2 A embodiment.
Fig. 3 A shows the process flow diagram of another embodiment of the localization method of contactor control device of the present invention.
Fig. 3 B shows the schematic diagram of contact panel 310 of the contactor control device 300 of Fig. 3 A embodiment.
Fig. 4 shows an embodiment again of the localization method of contactor control device of the present invention.
Fig. 5 shows the schematic diagram of an embodiment of contactor control device 500 of the present invention.
The reference numeral explanation
100: capacitance type touch-control panel
110,120: distribution curve
200,500: contactor control device
210,310,510: contact panel
320,330: illusory sweep trace
520: controller
530: temporary storage
CDC0～CDC7: capacitance detecting difference
CDC-1, CDC8: illusory electric capacity difference
X, Y: axis
CIN0～CIN15: detecting unit
P1, P2, P3: touch point
S210～S230, S310～S340, S410～S452: the step of localization method
Embodiment
Please refer to Fig. 2 A, Fig. 2 A shows the process flow diagram of an embodiment of the localization method of contactor control device of the present invention.Step wherein comprises: at first, provide the borderline region (S210) on the contact panel of controller setting touch device.At this, so-called borderline region is namely when touch point touches contact panel, and contactor control device only can send out the zone of two effective capacitance detecting differences.Please be simultaneously with reference to Fig. 2 A and Fig. 2 B, Fig. 2 B shows the touching view of the contactor control device 200 of Fig. 2 A embodiment.In Fig. 2 B, contactor control device 200 comprises the detecting unit CIN0～CIN7 of contact panel 210 and transverse axis.Detecting unit CIN0～CIN7 wherein is used for detecting and transmit the capacitance detecting difference of touch point on transverse axis on contact panel 210.
Then, when the touch-control medium touched contact panel 210, aforesaid controller can detect the maximal value in a plurality of capacitance detecting difference CDC0～CDC7, and namely whether peak value capacitance detecting difference appears in borderline region (S220).In Fig. 2 B, touch point P2 touches the zone on contact panel 210 left sides, the corresponding capacitance detecting difference CDC0～CDC7 that transmits of detecting unit CIN0～CIN7.Wherein, due to the comparatively close detecting unit CIN0 of touch point P2, so the capacitance detecting difference CDC0 that detecting unit CIN0 transmits is peak value capacitance detecting difference maximum in capacitance detecting difference CDC0～CDC7.
As mentioned above, due in the borderline region that touches contact panel 210 at touch point P2 the time, contactor control device 200 only can send out two effective capacitance detecting differences.In the present embodiment, these two effective capacitance detecting differences capacitance detecting difference CDC1 of transmitting of the peak value capacitance detecting difference CDC0 that transmits of detecting unit CIN0 and detecting unit CIN1 namely.
Please pay special attention at this, on the hardware of reality, due to the impact of noise or other factors, in the situation that contact panel 210 does not have is touched, the capacitance detecting difference that detecting unit transmits may not be 0.Therefore, in order to confirm that the capacitance detecting difference that detecting unit transmits is effective capacitance detecting difference, can judge that usually whether the capacitance detecting difference is used as the foundation of interpretation greater than a threshold value.Briefly, the capacitance detecting difference that transmits when detecting unit is greater than above-mentioned threshold value, and these capacitance detecting differences are just effective capacitance detecting difference.
Below please continue with reference to Fig. 2 A and Fig. 2 B.In step S220, judgement peak value capacitance detecting difference is when appearing at borderline region, and the location of the coordinate of the touch point of expression this moment can not be realized with the mode of the centroid calculation of existing 3.Therefore, detect difference according to peak value capacitance detecting difference and the adjacent capacitor adjacent with peak value capacitance detecting difference and carry out scale operation, and use the touch point coordinate (S230) that obtains the touch-control medium.In Fig. 2 B, touch point P2 touches contact panel 210 and makes detecting unit CIN0 produce peak value capacitance detecting difference CDC0 and detecting unit CIN1 generation adjacent capacitor detection difference CDC1.At this moment, the coordinate of touch point P2 on transverse axis can calculate acquisition for peak value capacitance detecting difference CDC0 and adjacent capacitor detection difference CDC1 proportion of utilization.Its account form is following to be shown shown in (1):
Wherein, take scanning line width as 32 during as example, detecting unit CIN0 is corresponding, and to detect contact panel 210 horizontal coordinates be 0 touching state, and corresponding contact panel 210 horizontal coordinates that detect of detecting unit CIN1 are 0 to add the touching state of twice scanning line width that is 64.
On the other hand, take another touch point P3 as example.Touch point P3 appears at the right of contact panel 210, makes detecting unit CIN7 produce peak value capacitance detecting difference CDC7 and detecting unit CIN6 generation adjacent capacitor detection difference CDC6.Shown in its account form of the coordinate of touch point P3 on transverse axis following showing (2):
Wherein, the touching state of the corresponding detection level coordinate 256 of detecting unit CIN7, and the touching state of the corresponding detection level coordinate 192 of detecting unit CIN6 (that is 256 deduct twice scanning line width 64).
Note that at this above-mentioned explanation is all that locator meams for touch point P2, the P3 coordinate on transverse axis illustrates.In fact, be identical for touch point P2, P3 in the locator meams of the locator meams of the coordinate on Z-axis and touch point P2, the P3 coordinate on transverse axis.Uniquely identical be not that on the locator meams of the coordinate on Z-axis, what adopt is to detect the capacitance detecting difference that the detecting unit of the coordinate on touch point P2, P3 Z-axis transmits.Its action details is seldom given unnecessary details at this because identical with the locator meams of coordinate on transverse axis.
The explanation of comprehensive front can be learnt, solve the orientation problem of borderline region touch point, can judge when the touch-control medium touches the borderline region of contact panel, select respectively above-mentioned formula (1) or formula (2) to calculate the transverse axis coordinate of touch point according to what touch for left margin or right margin.
Certainly, if touch point is not that when occurring in the borderline region of contact panel, the coordinate that can utilize existing centroid calculation mode to orient touch point gets final product.
It is worth mentioning that, above-mentioned touch-control medium can be pointer or point the first-class medium that can make capacitance type touch-control panel produce the Detection capacitance difference for example.Above-mentioned so-called controller is the circuit with computing power (being for example microprocessor) that is built in contactor control device 200.
Then please refer to Fig. 3 A, Fig. 3 A shows the process flow diagram of another embodiment of the localization method of contactor control device of the present invention.The step of the present embodiment comprises: at first, provide controller with the borderline region on the contact panel of setting touch device (S310), and receive illusory electric capacity difference (S320) by controller.Below please be simultaneously with reference to Fig. 3 A and 3B, Fig. 3 B wherein shows the schematic diagram of contact panel 310 of the contactor control device 300 of Fig. 3 A embodiment.In Fig. 3 B, contactor control device 300 includes illusory sweep trace 320,330 on its arranged on left and right sides except the contact panel 310 that comprises entity.In the present embodiment, this illusory sweep trace 320,330 can correspondence send out illusory electric capacity difference when the touch-control medium touches the borderline region of contact panel 310.Wherein, when the touch-control medium touched the borderline region on contact panel 310 left sides, illusory sweep trace 320 sent out illusory electric capacity difference CDC-1.Relative, when the touch-control medium touched the borderline region on contact panel 310 the right, illusory sweep trace 330 sent out illusory electric capacity difference CDC8.Therefore, under the situation of the illusory electric capacity difference that has illusory sweep trace to provide, just can utilize the coordinate of orienting touch point as centroid calculation formula illustrated in prior art.
Above-mentioned illusory electric capacity difference CDC-1, CDC8 can be stored in (not shown) in storer and be read by controller when carrying out the step S320 of the present embodiment.And this illusory electric capacity difference CDC-1, CDC8 can be set as fixed value, or also can be updated at any time dynamically.When using illusory electric capacity difference CDC-1, the CDC8 that can dynamically upgrade at any time, the adquisitiones of this illusory electric capacity difference CDC-1, CDC8 can paragraph afterwards in explanation in detail.
Please continue with reference to Fig. 3 A and Fig. 3 B, complete the reception of illusory electric capacity difference at controller after, and when the touch-control medium touched contact panel 310, whether the peak value capacitance detecting difference that controller detects in a plurality of capacitance detecting differences appeared in borderline region (S330).That is to say, controller will detect in the borderline region whether touch point occur in contact panel 310, and select the account form of suitable coordinate according to the result that detects.
In case the touch point that detects is that when occurring in the borderline region of contact panel 310, controller calculates touch point coordinate (S330) according to illusory capacitance detecting difference, peak value capacitance detecting difference and the adjacent peak value capacitance detecting difference adjacent with peak value capacitance detecting difference.Although note that the touch-control medium when touching the borderline region of contact panel 310 at this, generally speaking, contactor control device 300 only can send out the capacitance detecting difference of two groups.But due to the setting that illusory capacitance detecting difference has been arranged, the capacitance detecting difference of two groups that produces on the contact panel 310 of entity is added illusory capacitance detecting difference, just can utilize the centroid calculation mode of existing 3, try to achieve the coordinate of touch point.
Below will be illustrated for the enforcement example of the acquisition of illusory electric capacity difference, make those skilled in the art more can understand the embodiment of the present embodiment.
At first, detect by the very first time point of controller at least one, and obtain a plurality of the first capacitance detecting differences of producing when the touch-control medium touches non-borderline region on contact panel 310.Then, detect at the second time point not identical with very first time point, and a plurality of the second capacitance detecting differences that produce when obtaining borderline region on touch-control medium touching contact panel 310.At last, can subtract each other according to the average summation with the second capacitance detecting difference of the first capacitance detecting difference summation, to obtain illusory capacitance detecting difference.Or subtract each other according to the summation of the first capacitance detecting difference and the summation of the second capacitance detecting difference, to obtain illusory capacitance detecting difference.
It is worth mentioning that, between above-mentioned very first time point, the touch-control medium can move in the zone that is for example the corresponding detection of detecting unit CIN1～CIN6, can be also the zone (being for example detecting unit CIN1 or detecting unit CIN6) that always is fixed on the corresponding detection of same detecting unit.
Illustrate for an actual example, when at the very first time point t1, the touch-control medium touches the non-borderline region of contact panel 310 and obtains Detection capacitance difference CDC0 (t1), CDC1 (t1) and CDC2 (t1).And when the second time point t2, the touch-control medium touches the borderline region of contact panel 310 and obtains two Detection capacitance difference CDC0 (t2), CDC1 (t2).Therefore, illusory capacitance detecting difference CDC-1 just can be as shown in the formula shown in (3):
CDC-1(t2)＝(CDC0(t1)+CDC1(t1)+CDC2(t1))-(CDC0(t2)+CDC1(t2))......(3)
In addition, illusory capacitance detecting difference CDC-1 also can utilize following mode to calculate acquisition.Namely between more time point t1～tn-1, when the peak value of Detection capacitance difference all appear at detecting unit CIN1～CIN6 between the time, three Detection capacitance differences that each time point is obtained add stack up, and calculate its mean value.Recycle this mean value and deduct when time point tn, the Detection capacitance difference of peak value appears at that borderline region obtains two Detection capacitance differences and obtains illusory capacitance detecting difference CDC-1.Represent can be write as shown in the formula shown in (4) with mathematical expression:
CDC-1
tn＝[(CDC2
t1+CDC3
t1+CDC4
t1)+(CDC1
t2+CDC2
t2+CDC3
t2)+(CDC0
tn-1+CDC1
tn-1+CDC2
tn-1)]/(n-1)-(CDC0
tn+CDC1
tn).............(4)
When being illustrated in time point t1 in its Chinese style (4), the Detection capacitance difference of peak value appears at detecting unit CIN3, and when time point t2, the Detection capacitance difference of peak value appears at detecting unit CIN2, and when time point tn-1, the Detection capacitance difference of peak value appears at detecting unit CIN1.
Please pay special attention to, each above-mentioned time point and the corresponding relation of the detecting unit of corresponding transfer peak be example just only, and under the corresponding relation of different time points and the detecting unit of corresponding transfer peak, formula (4) will be changed dynamically.
Certainly, if the Detection capacitance difference of peak value occurs in the random time point at time point tn+1 or other after time point tn when appearing at the situation of borderline region, also can use each time in formula (4) (two Detection capacitance differences the when mean value of the summation of three Detection capacitance differences of t1～tn-1) obtain deducts the Detection capacitance difference that peak value occurs and appears at borderline region with obtain.
Moreover illusory capacitance detecting difference CDC-1 can also utilize following mode to calculate acquisition.Utilize exactly between a plurality of time point t1～tn-1, utilizing is for example summation average of the capacitance detecting difference that transmits of detecting unit CIN0～CIN2, deduct when time point tn, the Detection capacitance difference of peak value appear at borderline region obtain two Detection capacitance differences and to obtain illusory capacitance detecting difference CDC-1.
Represent with mathematical expression, can be expressed as suc as formula shown in (5):
CDC-1
tn＝[(CDC0
t1+CDC1
t1+CDC2
t1)+(CDC0
t2+CDC1
t2+CDC2
t2)+(CDC0
tn-1+CDC1
tn-1+CDC2
tn-1)]/(n-1)-(CDC0
tn+CDC1
tn)...............(5)
In summary, the example of lifting a reality comes formula (3) to computing method and the result thereof of formula (5).Table 1 shown in reference simultaneously is lower.Wherein, table 1 is listed the detecting unit CIN0～CIN7 relation of capacitance detecting difference CDC0～CDC7 of transmitting of t0～t6 in time in contactor control device.
Table 1:
| CDC0 | CDC1 | CDC2 | CDC3 | CDC4 | CDC5 | CDC6 | CDC7 | |
| t0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| t1 | 0 | 0 | 150 | 200 | 100 | 0 | 0 | 0 |
| t2 | 0 | 140 | 220 | 80 | 0 | 0 | 0 | 0 |
| t3 | 80 | 210 | 130 | 0 | 0 | 0 | 0 | 0 |
| t4 | 130 | 200 | 90 | 0 | 0 | 0 | 0 | 0 |
| t5 | 210 | 150 | 0 | 0 | 0 | 0 | 0 | 0 |
| |
220 | 100 | 0 | 0 | 0 | 0 | 0 | 0 |
In table 1, during time t0, finger is not touched contact panel, and all capacitance detecting differences are equal to 0.And when time t1, the zone that finger touches detecting unit CIN2～CIN4 detects also increases along the time that (t2～t6) moves to the mobile detecting unit CIN0 corresponding zone of detecting.
Take formula (3) as example, be expressed as follows in the illusory capacitance detecting difference of time t5:
CDC-1(t5)＝(130+200+90)-(210+150)
And be expressed as follows in the illusory capacitance detecting difference of time t6:
CDC-1(t6)＝(130+200+90)-(220+100)
And take formula (4) as example, be expressed as follows in the illusory capacitance detecting difference of time t5:
CDC-1(t5)＝(SumA/4)-(210+150)
And be expressed as follows in the illusory capacitance detecting difference of time t6:
CDC-1(t6)＝(SumA/4)-(220+100)
SumA=(150+200+100)+(140+220+80)+(80+210+130)+(130+200+90) wherein
If take formula (5) as example, be expressed as follows in the illusory capacitance detecting difference of time t5:
CDC-1(t5)＝(SumB/2)-(210+150)
And be expressed as follows in the illusory capacitance detecting difference of time t6:
CDC-1(t6)＝(SumB/2)-(220+100)
SumB=(80+210+130)+(130+200+90) wherein
Please pay special attention at this, because detecting unit CIN-1, CIN8 are illusory detecting unit, if the coordinate of the touch point that therefore calculates according to illusory capacitance detecting difference drops on detecting unit CIN-1, the CIN8 corresponding zone of detecting, this touch point is to be invalid touch point.Can not calculate this time touch point coordinate of location this moment, or be used as with the coordinate at edge the touch point coordinate that this locking bit goes out.
Below please refer to Fig. 4, Fig. 4 shows an embodiment again of the localization method of contactor control device of the present invention.Step wherein comprises: at first detect illusory capacitance detecting difference state is set, whether namely detect illusory capacitance detecting difference arranges and completes (S410), and so-called setting is herein completed, that is be so-called illusory capacitance detecting difference whether had the aforesaid enforcement example of enough information causes illustrated formula (3)～(5) one of them is tried to achieve at least.If being set up, illusory capacitance detecting difference completes, detect in the left margin zone whether touch point appear at contact panel (S430), if touch point is to appear in the left margin zone of contact panel, add the illusory capacitance detecting difference of left margin to orient the coordinate (S431) of touch point.Otherwise, if touch point is to appear in the right margin zone of contact panel, add the illusory capacitance detecting difference of right margin to orient the coordinate (S432) of touch point.
On the other hand, be not set up and complete if detect illusory capacitance detecting difference in step S410, judge whether touch point appears in the left margin zone of contact panel (S450).If touch point is when appearing in the left margin zone of contact panel, to utilize aforesaid formula (1) to calculate the coordinate (S451) of touch point.Otherwise, if touch point is when appearing in the right margin zone of contact panel, to utilize aforesaid formula (2) to calculate the coordinate (S452) of touch point.
Below please refer to Fig. 5, Fig. 5 shows the schematic diagram of an embodiment of contactor control device 500 of the present invention.Contactor control device 500 comprises contact panel 510, controller 520 and temporary storage 530.Wherein, controller 520 couples contact panel 510.Controller 520 is in order to the borderline region on setting touch panel 510, and when the touch-control medium touches contact panel 510, whether the peak value capacitance detecting difference that Detection capacitance detects in difference appears in borderline region.Controller 510 also detects difference according to peak value capacitance detecting difference and adjacent capacitor and uses the touch point coordinate that obtains the touch-control medium, or calculates touch point coordinate according to illusory capacitance detecting difference, peak value capacitance detecting difference and the adjacent peak value capacitance detecting difference adjacent with peak value capacitance detecting difference.At this, the mode of controller 520 location touch point coordinates is identical with aforementioned explanation about localization method, seldom gives unnecessary details herein.
530 of temporary storages couple controller 520, are used to provide the illusory capacitance detecting difference of controller access.
In sum, the deficiency of the capacitance detecting difference when the present invention utilizes illusory capacitance detecting difference to supply touch point to occur in borderline region makes the centroid calculation mode of existing 3 can effectively calculate the coordinate of borderline region touch point.The present invention also utilizes the ratio coordinates computed of peak value capacitance detecting difference and adjacent capacitor detection difference, in response to the coordinate setting mode of the borderline region touch point when illusory capacitance detecting difference is not effectively arranged.Thus, touch points all on contactor control device can effectively be located out under various states.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention; those skilled in the art can do some changes and retouching under the premise without departing from the spirit and scope of the present invention, therefore protection scope of the present invention is as the criterion with claim of the present invention.
Claims (13)
1. the localization method of a contactor control device comprises:
A borderline region on the contact panel that one controller sets this contactor control device is provided;
When a touch-control medium touched this contact panel, whether a peak value capacitance detecting difference that provides this controller to detect in a plurality of capacitance detecting differences appeared in this borderline region;
When this peak value capacitance detecting difference appears in this borderline region, provide this controller to detect difference according to this peak value capacitance detecting difference and an adjacent capacitor adjacent with this peak value capacitance detecting difference and carry out a scale operation, and use a touch point coordinate that obtains this touch-control medium; And
When this peak value capacitance detecting difference is not when appearing in this borderline region, provide this controller to calculate and obtain this touch point coordinate by this peak value capacitance detecting difference and two adjacent capacitor detection differences adjacent with this peak value capacitance detecting difference.
2. the localization method of contactor control device as claimed in claim 1 wherein also comprises:
Provide this controller to detect one of an illusory capacitance detecting difference state is set; And
If this arranges state and is set up and completes, and when this peak value capacitance detecting difference appears in this borderline region, calculate this touch point coordinate according to this illusory capacitance detecting difference, this peak value capacitance detecting difference and this adjacent peak value capacitance detecting difference.
3. the localization method of contactor control device as claimed in claim 2 wherein also comprises:
Provide this controller a very first time point detects and obtain when this peak value capacitance detecting difference be not when appearing in this borderline region, a plurality of very first times that this touch-control medium produces when touching non-this borderline region on this contact panel are put the capacitance detecting differences;
Provide this controller detect and obtain when this peak value capacitance detecting difference appears in this borderline region at one second time point, a plurality of the second time point capacitance detecting differences that this touch-control medium produces when touching this borderline region on this contact panel; And
Provide this controller to calculate this illusory capacitance detecting difference according to this very first time point capacitance detecting difference and this second time point capacitance detecting difference.
4. the localization method of contactor control device as claimed in claim 3, wherein this illusory capacitance detecting difference equals summation poor of the summation of this very first time point capacitance detecting difference and this second time point capacitance detecting difference.
5. the localization method of contactor control device as claimed in claim 2 wherein also comprises:
Provide this controller a very first time point, a s time point ..., a t time point detects and obtain when this peak value capacitance detecting difference be not when appearing in this borderline region, a plurality of very first time points that this touch-control medium produces when touching non-this borderline region on this contact panel, s time point ..., t time point capacitance detecting difference;
Provide this controller detect and obtain when this peak value capacitance detecting difference appears in this borderline region at a u time point, a plurality of u time point capacitance detecting differences that this touch-control medium produces when touching this borderline region on this contact panel; And
Provide this controller according to this very first time point, s time point ..., t time point capacitance detecting difference and this u time point capacitance detecting difference calculate this illusory capacitance detecting difference.
6. the localization method of contactor control device as claimed in claim 5, wherein this illusory capacitance detecting difference equal this very first time point, s time point ..., the summation of the mean value of the summation of t time point capacitance detecting difference and this u time point capacitance detecting difference poor.
7. the localization method of contactor control device as claimed in claim 2 wherein also comprises:
Provide a temporary storage to store this illusory capacitance detecting difference.
8. the localization method of a contactor control device comprises:
A borderline region on the contact panel that one controller sets this contactor control device is provided;
Provide this controller to receive an illusory capacitance detecting difference;
When this touch-control medium touched this contact panel, whether a peak value capacitance detecting difference that provides this controller to detect in a plurality of capacitance detecting differences appeared in this borderline region; And
When this peak value capacitance detecting difference appears in this borderline region, calculate this touch point coordinate according to this illusory capacitance detecting difference, this peak value capacitance detecting difference and an adjacent peak value capacitance detecting difference adjacent with this peak value capacitance detecting difference; And
When this peak value capacitance detecting difference is not when appearing in this borderline region, provide this controller to calculate and obtain this touch point coordinate by this peak value capacitance detecting difference and two adjacent capacitor detection differences adjacent with this peak value capacitance detecting difference.
9. the localization method of contactor control device as claimed in claim 8 wherein also comprises:
Provide this controller a very first time point detects and obtain when this peak value capacitance detecting difference be not when appearing in this borderline region, a plurality of very first times that this touch-control medium produces when touching non-this borderline region on this contact panel are put the capacitance detecting differences;
Provide this controller detect and obtain when this peak value capacitance detecting difference appears in this borderline region at one second time point, a plurality of the second time point capacitance detecting differences that this touching medium produces when touching this borderline region on this contact panel;
Provide this controller to calculate this illusory capacitance detecting difference according to this very first time point capacitance detecting difference and this second time point capacitance detecting difference.
10. the localization method of contactor control device as claimed in claim 9, wherein this illusory capacitance detecting difference equals summation poor of the summation of this very first time point capacitance detecting difference and this second time point capacitance detecting difference.
11. the localization method of contactor control device as claimed in claim 8 wherein also comprises:
Provide this controller a very first time point, a s time point ..., a t time point detects and obtain when this peak value capacitance detecting difference be not when appearing in this borderline region, a plurality of very first time points that this touch-control medium produces when touching non-this borderline region on this contact panel, s time point ..., t time point capacitance detecting difference;
Provide this controller detect and obtain when this peak value capacitance detecting difference appears in this borderline region at a u time point, a plurality of u time point capacitance detecting differences that this touch-control medium produces when touching this borderline region on this contact panel; And
Provide this controller according to this very first time point, s time point ..., t time point capacitance detecting difference and this u time point capacitance detecting difference calculate this illusory capacitance detecting difference.
12. the localization method of contactor control device as claimed in claim 11, wherein this illusory capacitance detecting difference equal this very first time point, s time point ..., the summation of the mean value of the summation of t time point capacitance detecting difference and this u time point capacitance detecting difference poor.
13. the localization method of contactor control device as claimed in claim 8 wherein also comprises:
Provide a temporary storage to store this illusory capacitance detecting difference.
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| CN 200910266333 CN102109937B (en) | 2009-12-24 | 2009-12-24 | Locating device and locating method for touch device |
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| CN 200910266333 CN102109937B (en) | 2009-12-24 | 2009-12-24 | Locating device and locating method for touch device |
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| CN102109937A CN102109937A (en) | 2011-06-29 |
| CN102109937B true CN102109937B (en) | 2013-06-26 |
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| CN105511655B (en) * | 2014-09-26 | 2018-08-07 | 宸鸿科技(厦门)有限公司 | Touch panel and its method for detecting |
| CN109656408B (en) * | 2018-12-11 | 2022-01-28 | 深圳市德明利光电有限公司 | Touch coordinate calculation method based on area mirror image, touch device and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540579A (en) * | 2003-04-24 | 2004-10-27 | 海德威电子工业股份有限公司 | Method and system for testing coordinate in use for touching type faceplate |
| CN101470561A (en) * | 2007-12-26 | 2009-07-01 | 义隆电子股份有限公司 | Method for calibrating coordinates of touch control screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1540579A (en) * | 2003-04-24 | 2004-10-27 | 海德威电子工业股份有限公司 | Method and system for testing coordinate in use for touching type faceplate |
| CN101470561A (en) * | 2007-12-26 | 2009-07-01 | 义隆电子股份有限公司 | Method for calibrating coordinates of touch control screen |
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