CN103197811B - Hybrid type non-common ground compensation method of touch panel - Google Patents
Hybrid type non-common ground compensation method of touch panel Download PDFInfo
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- CN103197811B CN103197811B CN201210022362.1A CN201210022362A CN103197811B CN 103197811 B CN103197811 B CN 103197811B CN 201210022362 A CN201210022362 A CN 201210022362A CN 103197811 B CN103197811 B CN 103197811B
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Abstract
The invention discloses a mixed type non-common ground compensation method of a touch panel, which comprises the following steps: obtaining a mutual capacitance type induction picture frame and a self-capacitance type induction picture frame, reading induction values of corresponding rows and columns of the self-capacitance type induction picture frame by using rows and columns of induction points of a touch induction group of the mutual capacitance type induction picture frame, averaging the induction values of the corresponding rows and columns of the self-capacitance type induction picture frame, and taking the average induction value as the induction value of the corresponding touch induction group for compensation; since the self-capacitance induction frame is not easily affected by the uncollected ground, the induction value of the column and the row of the self-capacitance induction frame is used as the induction value of the uncollected ground induction point in the mutual capacitance induction frame, and the induction value damaged by the uncollected ground of the mutual capacitance induction frame can be effectively compensated.
Description
Technical field
The invention relates to a kind of not compensation method altogether of contact panel, espespecially one effectively can solve capacitance type touch-control panel because not producing sensing abnormal occurrence altogether, and the hybrid not compensation method altogether of the contact panel of erroneous judgement touching object.
Background technology
The main touch-control principle of capacitance type touch-control panel is the capacitance variations value being changed capacitance type touch-control panel touched position by static electricity on human body, and then passes through the touch position of this capacitance variations value identification user; For effectively reacting static electricity on human body's signal, the general electronic installation metal shell of capacitance type touch-control panel that adopts can be connected with the ground signalling of capacitance type touch-control panel and form electrical structure relation altogether, allows user's hand be bound to contact with metal shell.
At present because the Smartphone of touch-control panel computer or large size panel is day by day popularized, user likely only contacts with the contact panel of these electronic installations with finger or palm, and cannot with it altogether; And use-pattern like this, capacitance variations value under not being total to ground mode can be caused to present exception.
Refer to shown in Fig. 8, for a capacitance type touch-control panel do not adopt under ground mode (floatingmode) altogether mutual tolerance formula scan acquired by mutual tolerance formula induction picture frame 10, from in figure, this mutual tolerance formula induction picture frame 10 reacts the touching induction group of single touching object 30, the influence value of its middle induction point should be maximal value originally, for the coordinate correctly identifying this touching object, but because of not altogether ground thus its influence value 0,15 (16 carry) can be reduced, correctly cannot pick out correct coordinates.It can thus be appreciated that the influence value not being total to the mutual tolerance formula induction picture frame 10 adopting mutual tolerance formula to scan under ground mode can be damaged and affect the correctness of coordinate interpretation.
As shown in the above description, current mutual tolerance formula induction picture frame carries out the identification of touching object coordinate and is really subject to contact panel occurs mistake under not being total to ground mode, therefore mutual tolerance formula induction picture frame must compensate with regard to destroyed influence value before carrying out coordinate identification, just can avoid reporting coordinate by mistake.
Summary of the invention
Because the technical disadvantages not being total to the high error rate of ground mode recognition technology of above-mentioned capacitance type touch-control panel, fundamental purpose of the present invention is to provide a kind of hybrid not compensation method altogether, to avoid the touching object coordinate erroneous judgement do not caused altogether.
The technical way used for reaching above-mentioned purpose be make this contact panel hybrid not altogether compensation method include:
Obtain mutual tolerance formula induction picture frame and self-tolerant induction picture frame;
Read the influence value of corresponding row, column in this self-tolerant induction picture frame with the row, column of touching induction point in induction group of mutual tolerance formula induction picture frame, and get the average of the influence value of corresponding row, column in this self-tolerant induction picture frame, to obtain average influence value;
Using the influence value that touch the induction point of in induction group with this average influence value corresponding row, column of average influence value as this mutual tolerance formula induction picture frame.
The invention described above mainly through self-tolerant induction picture frame not easily by do not affect altogether compared with characteristic, compensate as the influence value of induction point in mutual tolerance formula induction picture frame using the influence value of the row, column of self-tolerant induction picture frame, avoid the error rate that subsequent coordinates judges.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of hybrid not compensation method first preferred embodiment altogether of the present invention;
Fig. 2 is that a contact panel scans the mutual tolerance formula induction picture frame and self-tolerant induction picture frame that obtain under not being total to ground mode with mutual tolerance formula and self-tolerant, and wherein self-tolerant induction picture frame only comprises part row, column induced signal;
Fig. 3 carries out the induction of the mutual tolerance formula after altogether not compensating picture frame with the mutual tolerance formula of Fig. 2 induction picture frame;
Fig. 4 is the process flow diagram of hybrid not compensation method second preferred embodiment altogether of the present invention;
Fig. 5 carries out the induction of the mutual tolerance formula after altogether not compensating picture frame to the first induction point to be compensated of Fig. 2 mutual tolerance formula induction picture frame;
Fig. 6 A to Fig. 6 D carries out cross determining program process flow diagram;
Fig. 7 carries out the induction of the mutual tolerance formula after altogether not compensating picture frame to the second induction point to be compensated of Fig. 2 mutual tolerance formula induction picture frame;
Fig. 8 scans in not being total to ground mode the mutual tolerance formula induction picture frame and self-tolerant scanning picture frame that read to a contact panel, and scans the self-tolerant scanning picture frame of reading in common ground mode, and wherein self-tolerant induction picture frame only comprises part row, column induced signal.
Embodiment
Below coordinating preferred embodiment graphic and of the present invention, setting forth the technological means that the present invention takes for reaching predetermined goal of the invention further.
First referring to shown in Fig. 1, is the first preferred embodiment process flow diagram of the hybrid not compensation method altogether of the present invention one contact panel, this hybrid not altogether compensation method include:
Obtain mutual tolerance formula induction picture frame and self-tolerant induction picture frame, and preset a counting critical value S10;
Read the influence value of corresponding row, column in this self-tolerant induction picture frame with the induction point row, column of respectively touching induction group of mutual tolerance formula induction picture frame, and get the average of the influence value of corresponding row, column in this self-tolerant induction picture frame, to obtain average influence value S11;
Using the influence value S12 that touch the induction point of induction group of average influence value as this mutual tolerance formula induction picture frame.
Refer to shown in Fig. 8, scan with self-tolerant the self-tolerant induction picture frame 20 obtained respectively in common ground mode and under not being total to ground mode, from in figure, in common ground mode and under not being total to ground mode, the difference obtaining induced signal is scanned to colleague Y4 ', Y4 and same column X4 ', X4, the induction numerical value being only the overall ground mode comparatively altogether of induction numerical value of not ground mode is altogether lower slightly, but the peak value that corresponding touching object 30 is responded to still maintain on the occasion of and maximal value, do not hinder the correctness in the identification of touching object 30 coordinate; Therefore, the present invention using self-tolerant picture frame 20 as the influence value compensating mutual tolerance formula picture frame 10 induction point, really can in mutual tolerance formula picture frame 10 not altogether induction point compensate.
Please refer to Fig. 2, be one in the mutual tolerance formula induction picture frame 10 do not obtained under ground mode altogether, it includes a touching induction group, be made up of 12 induction points altogether, wherein influence value (0,15) (16 carry) of two middle induction points be subject to not ground altogether impact and be low compared with other induction point influence value, therefore be not induction point 101 altogether.Below describe the process that this touching induction group is compensated in detail.
Due to self-tolerant induction picture frame 20 be include all row, column of contact panel answer inductance value, therefore by the invention described above compensation method, then each induction point row, column of this touching induction group can read the influence value of corresponding row, column in this self-tolerant induction picture frame 20, the influence value of corresponding row, column in this self-tolerant induction picture frame 20 is averaged the average influence value of rear acquisition, using correspondence as the influence value of induction point, be with, as shown in Figure 2, with influence value (0, 15) row of two not induction points 101 altogether, row Y4, X4/Y5, X4 reads self-tolerant picture frame corresponding line, row Y4, X4/Y5, the influence value (100 of X4, 100) (100, 100), get self-tolerant picture frame 20 corresponding line again, row Y4, X4/Y5, the influence value (100 of X4, 100) (100, 100) mean value, obtain average influence value (100, 100), again by average influence value (100, 100) as former influence value (0, 15), with to these two not altogether induction point 101 compensate, and the touching after compensating responds to group namely as shown in Figure 3.
Moreover, for accelerating, to the compensation of not induction point 101 over the ground, induction point to be compensated can be selected further in above-mentioned steps S11, only read the influence value of corresponding row, column in this self-tolerant induction picture frame 20 with the row, column of induction point to be compensated.Induction point to be compensated is selected to have following several mode:
1. preset a critical count value, and the periphery influence value counting each induction point in this touching induction group is high induction point quantity compared with it, judges to have reached critical count value, then select as induction point to be compensated.
2. preset a critical count value, and the periphery influence value counting each induction point in this touching induction group is low induction point quantity compared with it, judges to have reached critical count value, then select as induction point to be compensated.
In addition, refer to shown in Fig. 4 and Fig. 5, be another preferred embodiment of the present invention, it includes:
Obtain mutual tolerance formula induction picture frame 10 and self-tolerant induction picture frame 20, and preset an induction critical value S10 ';
Determine the first induction point 102 to be compensated, the influence value of each induction point of comparison mutual tolerance formula induction picture frame 10, in judging that influence value is greater than the induction point responding to critical value and is the first complementary induction point 102, S11 '; Wherein this induction critical value is higher than general noise figure, to avoid noise being listed in the first complementary induction point;
The influence value of the corresponding row, column of this self-tolerant induction picture frame 20 is read with the row, column of each first induction point 102 to be compensated, as shown in Figure 2, and get the influence value of this self-tolerant induction picture frame 20 corresponding row, column average after, using the corresponding influence value S12 ' as the first induction point to be compensated of average influence value of the corresponding row, column of this self-tolerant induction picture frame 20;
Determine the second induction point 103 to be compensated, judge the induction point S13 ' of still not compensated in touching induction group;
The influence value of the corresponding row, column of this self-tolerant induction picture frame 20 is read with the row, column of each second induction point 103 to be compensated, as shown in Figure 2, and the influence value getting this self-tolerant induction picture frame 20 corresponding row, column average after, using the corresponding influence value S14 ' as the second induction point 103 to be compensated of average influence value of the corresponding row, column of this self-tolerant induction picture frame 20.
Above-mentionedly determine that the second induction point 103 to be compensated adopts cross determining program, namely meaning first presets a critical number, the influence value of all induction points of this touching induction group is compared with the influence value of upper and lower, left and right induction point respectively, the influence value adding up the upper and lower, left and right induction point of each induction point is greater than the number of the influence value of current induction point, judges whether total number exceedes this critical number; As those of exceeding, then represent current induction point and not yet compensate and be considered as the second induction point 103 to be compensated.
The detailed compensation process of above-described embodiment is sincerely described with example below further, first refer to shown in Fig. 5 and Fig. 6 A, it is a mutual tolerance formula induction picture frame 10 do not obtained under ground mode altogether, it includes a touching induction group, wherein the influence value 0,15 (16 carry) of two middle induction points is low compared with other induction point influence value, therefore is not induction point altogether.
Suppose that predetermined inductive critical value is 10, then this touching induction group all influence values in except the induction point that influence value is 0, be the first induction point 102 to be compensated, after determining the first induction point 102 to be compensated, namely in self-tolerant induction picture frame 20, corresponding row Y4, row X4 influence value is read according to each first induction point 102 row, column to be compensated, as shown in Figure 2, and get its average after, using corresponding for the average influence value former influence value as the first induction point 102 to be compensated.As shown in Figure 5, the first induction point 102 to be compensated of this mutual tolerance formula induction picture frame 10 is namely through over-compensation, and only influence value is except the induction point of 0; Sequentially all induction points of this touching induction group are checked therefore carry out cross determining program again, as shown in Fig. 6 A to Fig. 6 D, in this example, include 12 induction points altogether therefore carry out 12 times and detect.Suppose that this critical number is 4, then judge influence value be four induction points in induction point upper and lower, left and right of 0 induction numerical value all compared with it as large person, namely critical number is met, and make influence value be 0 induction point be the second induction point 103 to be compensated, and compensate, so can avoid compensating the induction point of touching induction group non-in this mutual tolerance formula induction picture frame 10, such as, noise induction point 104 in Fig. 5.Be with, it is equally the influence value that row, column Y4, the X4 of the induction point of 0 reads corresponding row, column Y4, X4 in this self-tolerant induction picture frame 20 with influence value, getting its average overriding by former influence value 0 is afterwards 100, as shown in Figure 7, all induction points of the touching induction group of this mutual tolerance formula induction picture frame 10 are all compensated complete with the influence value of self-tolerant induction picture frame 20, because self-tolerant induction picture frame 20 is less by not affecting altogether, therefore the mutual tolerance formula induction picture frame 10 after over-compensation correctly can identify touching object coordinate.
In sum, the present invention can compensate the touching induction group do not read under ground mode altogether really, make this touching respond to induction Numerical regression that group is destroyed to close to the influence value under ground connection pattern, in order to the follow-up coordinate determining step carrying out touch position; This also means, even if user need not contact the electronic installation (altogether ground mode) adopting capacitance type touch-control panel, the user that also can correctly judge points touch position, avoids the use habit limiting user.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, not departing from the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a hybrid not compensation method altogether for contact panel, it is characterized in that, described method comprises:
Obtain mutual tolerance formula induction picture frame and self-tolerant induction picture frame;
Read the influence value of corresponding row, column in described self-tolerant induction picture frame with the row, column of touching induction point in induction group of mutual tolerance formula induction picture frame, and get the average of the influence value of corresponding row, column in described self-tolerant induction picture frame, to obtain average influence value;
Using the influence value that touch the induction point of in induction group with this average influence value corresponding row, column of average influence value as described mutual tolerance formula induction picture frame.
2. the hybrid not compensation method altogether of contact panel according to claim 1, it is characterized in that, the described row, column of touching induction point in induction group with mutual tolerance formula induction picture frame reads in the step of the influence value of corresponding row, column in described self-tolerant induction picture frame, reads the influence value of corresponding row, column in described self-tolerant induction picture frame further with the row, column of all induction points of each touching induction group.
3. the hybrid not compensation method altogether of contact panel according to claim 1, it is characterized in that, described with many row, column corresponding to each touching induction group of mutual tolerance formula induction picture frame, the step reading the influence value of corresponding row, column in described self-tolerant induction picture frame comprises further:
Be preset with a counting critical value;
Select induction point to be compensated, be that the periphery influence value of each induction point judging each touching induction group counts critical value person compared with it as high induction point quantity has reached, then selected as induction point to be compensated;
The influence value of described self-tolerant induction picture frame corresponding row, row is read with the row, column of induction point to be compensated.
4. the hybrid not compensation method altogether of contact panel according to claim 1, it is characterized in that, described with many row, column corresponding to each touching induction group of mutual tolerance formula induction picture frame, the step reading the influence value of corresponding row, column in described self-tolerant induction picture frame comprises further:
Be preset with a counting critical value;
Select induction point to be compensated, judge that the periphery influence value of each induction point of each touching induction group counts critical value person compared with it as low induction point quantity has reached, then selected as induction point to be compensated;
The influence value of described self-tolerant induction picture frame corresponding row, row is read with the row, column of induction point to be compensated.
5. a hybrid not compensation method altogether for contact panel, it is characterized in that, described method comprises:
Obtain mutual tolerance formula induction picture frame and self-tolerant induction picture frame, and preset an induction critical value;
Determine the first induction point to be compensated, the influence value of each induction point of comparison mutual tolerance formula induction picture frame, in judging that influence value is greater than the induction point responding to critical value and is the first complementary induction point;
The influence value of described self-tolerant induction picture frame corresponding row, row is read with the row, column of each first induction point to be compensated, and get described self-tolerant induction picture frame corresponding row, row influence value average after, using the corresponding influence value as the first induction point to be compensated of average influence value of described self-tolerant induction picture frame corresponding row, row;
Determine the second induction point to be compensated, judge the induction point of still not compensated in touching induction group;
The influence value of described self-tolerant induction picture frame corresponding row, row is read with the row, column of each second induction point to be compensated, and get described self-tolerant induction picture frame corresponding row, row influence value average after, using the corresponding influence value as the second induction point to be compensated of average influence value of described self-tolerant induction picture frame corresponding row, row.
6. the hybrid not compensation method altogether of contact panel according to claim 5, is characterized in that, describedly determines that the second induction point step to be compensated comprises:
Preset a critical number;
The influence value counting the induction point of the upper and lower, left and right of each induction point is greater than the number of the influence value of current induction point;
Judge whether the number being greater than the influence value of current induction point exceedes described critical number, if exceed, is considered as the second induction point to be compensated.
7. the hybrid not compensation method altogether of contact panel according to claim 6, it is characterized in that, described induction critical value is 10.
8. the hybrid not compensation method altogether of the contact panel according to claim 6 or 7, it is characterized in that, described critical number is 4.
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| Application Number | Priority Date | Filing Date | Title |
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| TW101100918A TWI463366B (en) | 2012-01-10 | 2012-01-10 | Hybrid floating compensation method of touch panel |
| TW101100918 | 2012-01-10 |
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| CN103197811A CN103197811A (en) | 2013-07-10 |
| CN103197811B true CN103197811B (en) | 2016-01-06 |
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| TWI490760B (en) * | 2012-04-03 | 2015-07-01 | Elan Microelectronics Corp | A method and an apparatus for improving noise interference of a capacitive touch device |
| TWI514212B (en) * | 2013-08-23 | 2015-12-21 | Himax Tech Ltd | Touch panel capable of detecting a stylus and a method of using the same |
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| US9075483B2 (en) * | 2007-12-21 | 2015-07-07 | Apple Inc. | Negative pixel compensation |
| TWI496060B (en) * | 2008-04-07 | 2015-08-11 | Elan Microelectronics Corp | Capacitive touch panel and its positioning method for two - dimensional application with single layer sensor |
| TWI469021B (en) * | 2010-06-02 | 2015-01-11 | Tpk Touch Solutions Xiamen Inc | Projection method of projection capacitive touch panel |
| US8508493B2 (en) * | 2010-06-21 | 2013-08-13 | Pixart Imaging Inc. | Reduction of electromagnetic interference in a capacitive touchscreen system |
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Patent Citations (4)
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| CN102023768A (en) * | 2009-09-09 | 2011-04-20 | 比亚迪股份有限公司 | A touch contact positioning method, system and video display terminal |
| TW201113795A (en) * | 2009-10-09 | 2011-04-16 | Egalax Empia Technology Inc | Method and device for position detection |
| CN101847069A (en) * | 2010-03-03 | 2010-09-29 | 敦泰科技(深圳)有限公司 | Multi-point touch detection method of touch screen |
| WO2011137200A1 (en) * | 2010-04-30 | 2011-11-03 | Microchip Technology Incorporated | Capacitive touch system using both self and mutual capacitance |
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| TWI463366B (en) | 2014-12-01 |
| TW201329801A (en) | 2013-07-16 |
| CN103197811A (en) | 2013-07-10 |
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