CN1949160B - Induced quantity compensating method of touch controlling board inductor - Google Patents
Induced quantity compensating method of touch controlling board inductor Download PDFInfo
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- CN1949160B CN1949160B CN2005101125575A CN200510112557A CN1949160B CN 1949160 B CN1949160 B CN 1949160B CN 2005101125575 A CN2005101125575 A CN 2005101125575A CN 200510112557 A CN200510112557 A CN 200510112557A CN 1949160 B CN1949160 B CN 1949160B
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- stitching
- control panel
- touch control
- electric capacity
- induction amount
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Abstract
The invention relates to touch pad inducer inducing rate compensating method. It includes the following steps: processing tough body operation according to the middle line trace basic capacity distributing relationship of the touch pad inducer to make its inducing rate be symmetrical and linear equalization, or make the computed positional value cannot generate offset. The tough body operation includes the operation for the inducing rate and positional value, the adjusting for the line trace charging and discharging frequency or its current.
Description
Technical field
The present invention is relevant a kind of Trackpad, particularly about a kind of compensation method of induction amount of touch control panel inductor.
Background technology
Trackpad is because volume is little, cost is low, consumed power is low and long service life, therefore be widely used on each electronic product, for example notebook, mouse, MP3 player, mobile phone or the like even, as input media, the user only needs to slide on panel or contact with object (for example electric conductivity object of finger or pointer and so on), cursor is produced relatively move or absolute coordinates moves, and can finish various inputs such as comprising character calligraph, scrolling window and virtual key.Known touch control panel inductor mostly is the symmetric form structure greatly, square structure for example shown in Figure 1, its stitching (trace) is of similar shape and area, therefore the distribution of basic electric capacity on touch control panel inductor of stitching is symmetrical, object causes the induction amount on touch control panel inductor also be symmetry and linear equating, as shown in Figure 2.Yet, different along with using, the shape of touch control panel inductor and structure are also different thereupon, produced asymmetric touch control panel inductor, asymmetric touch control panel inductor be meant the external form that comprises inductor, each layer of inductor thickness, stitching area and with distance of ground plane etc. at least one be asymmetric person.The basic electric capacity of stitching is proportional to the area and the ratio of stitching with the ground plane distance of stitching:
C=ε * (A/d) formula 1
Wherein, C represents basic electric capacity, and ε represents dielectric coefficient, and A represents the area size of stitching, and d represents the distance of stitching and ground plane.And the induction amount that object causes on touch control panel inductor:
S is proportional to (Δ C/C) formula 2
Wherein, Δ C is the capacitance change that object causes on inductor.Therefore, the distance of the area of stitching and stitching and ground plane all can influence the size of its basic electric capacity.With circular configuration shown in Figure 3 is example, the length of the stitching X0 to X6 of inductor 100 is inequality, make that the area of stitching X0 to X6 is unequal, similarly, the area of stitching Y0 to Y6 is also unequal, by formula 1 as can be known, when described stitching equates with the distance of ground plane, the area big person of healing, its basic electric capacity is bigger, and the basic electric capacity that causes stitching being distributed as on inductor 100 is asymmetric.By formula 2 as can be known, when object is operated on inductor 100, because the basic electric capacity difference of each stitching, therefore the induction amount difference that produces at diverse location, cause side-play amount when producing action erroneous judgement or calculating object position when as shown in Figure 4, the asymmetric and not linear equal phenomenon of this kind induction amount causes Object Operations.
Therefore, a kind of induction amount symmetry and linear compensation method that equates that makes touch control panel inductor is to be the institute Ji.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of induction amount symmetry and linear compensation method that equates that makes touch control panel inductor.
According to the present invention, a kind of compensation method of induction amount of touch control panel inductor comprises the basic electric capacity that calculates each stitching in this touch control panel inductor, calculate the distribution relation of described basic electric capacity, and carry out the firmware computing according to this distribution relation, make the induction amount symmetry and the linearity of described stitching equate, this firmware computing comprises to be carried out computing or adjusts frequency or the size of current that stitching is discharged and recharged the induction amount.
According to the present invention, a kind of compensation method of induction amount of touch control panel inductor comprises calculates the positional value of an object on this touch control panel inductor, calculate the distribution relation of each stitching induction amount in this touch control panel inductor, and carry out the firmware computing according to this distribution relation, make this positional value and this object can not produce side-play amount between the pairing positional value on this touch control panel inductor, this firmware computing comprises increases or lowers this positional value.
The present invention utilizes the computing of firmware, for example the induction amount is carried out computing or adjusted frequency or the size of current that stitching is discharged and recharged, make induction amount symmetry and linear equating with the stitching of layer or different layers, or according to the distribution relation of stitching induction amount, the positional value that calculates is done computing, cause side-play amount in the time of therefore can avoiding touch control panel inductor when Object Operations, to produce action erroneous judgement or calculating object positional value.
Description of drawings
Fig. 1 shows the synoptic diagram of a square touch control panel inductor;
The induction amount that Fig. 2 display object causes on square touch control panel inductor;
Fig. 3 shows the synoptic diagram of a circular touch control panel inductor;
The induction amount that Fig. 4 display object causes on circular touch control panel inductor;
Fig. 5 is the process flow diagram of first embodiment of the invention;
Fig. 6 is the distribution relation figure of the basic electric capacity of stitching:
Fig. 7 is the distribution relation figure of stitching induction amount;
Fig. 8 is the distribution relation figure of stitching induction amount after the firmware computing; And
Fig. 9 is the process flow diagram of second embodiment of the invention.
Symbol description:
100 circular touch control panel inductors
200 process flow diagrams
210 calculate the basic electric capacity of each stitching in the touch control panel inductor
220 calculate the distribution relation of described basic electric capacity
230 carry out the firmware computing
300 process flow diagrams
The positional value of 310 calculating objects on touch control panel inductor
320 calculate the distribution relation of same layer line mark induction amount
330 carry out the firmware computing
Embodiment
Fig. 5 is flow process Figure 200 of one embodiment of the present of invention, step 210 is calculated the basic electric capacity of each stitching in the touch control panel inductor according to formula 1, step 220 is calculated the distribution relation of described basic electric capacity, step 230 is carried out the firmware computing according to the distribution relation that step 220 produces, and makes the induction amount symmetry and linear the equating of each stitching in the touch control panel inductor.Touch control panel inductor 100 explanations with circular configuration shown in Figure 3, touch control panel inductor 100 has direction orthogonal stitching X0 to X6 and Y0 to Y6, calculate the basic electric capacity of stitching X0 to X6 according to formula 1, the distribution of its basic electric capacity as shown in Figure 6, according to formula 2, when object is operated on inductor 100, because the basic electric capacity difference of each stitching, therefore the induction amount difference that produces at different stitchings, as shown in Figure 7, carry out the firmware computing according to distribution relation shown in Figure 6, make the induction amount symmetry and linear the equating of stitching, as shown in Figure 8.In the same way stitching Y0 to Y6 is carried out computing, make stitching Y0 to Y6 have symmetry and the linear induction amount that equates, and then make the induction amount symmetry and linear the equating of touch control panel inductor 100.In one embodiment, the firmware computing comprises the distribution relation according to the basic electric capacity of each stitching (for example X0 to X6 and Y0 to Y6), its induction amount is carried out computing, for example to the stitching of induction amount lower (being that basic electric capacity is bigger) (X2 for example, X3, X4, Y2, Y3 and Y4), distribution relation according to basic electric capacity carries out addition or multiplying, or to the stitching of induction amount higher (being that basic electric capacity is less) (X0 for example, X1, X5, X6, Y0, Y1, Y5 and Y6), distribution relation according to basic electric capacity carries out subtraction or division arithmetic, makes induction amount symmetry and linear the equating of stitching X0 to X6 and Y0 to Y6.In another embodiment, the firmware computing comprises the distribution relation according to the basic electric capacity of each stitching (for example X0 to X6 and Y0 to Y6), the frequency that adjustment discharges and recharges each stitching, for example to the stitching of induction amount lower (being that basic electric capacity is bigger) (X2 for example, X3, X4, Y2, Y3 and Y4), distribution relation according to basic electric capacity promotes the frequency that discharges and recharges, or to the stitching of induction amount higher (being that basic electric capacity is less) (X0 for example, X1, X5, X6, Y0, Y1, Y5 and Y6), distribution relation according to basic electric capacity reduces the frequency that discharges and recharges, and makes induction amount symmetry and linear the equating of stitching X0 to X6 and Y0 to Y6.In other embodiments, the firmware computing comprises the distribution relation according to the basic electric capacity of each stitching (for example X0 to X6 and Y0 to Y6), the size of current that adjustment discharges and recharges each stitching, for example to the stitching of induction amount lower (being that basic electric capacity is bigger) (X2 for example, X3, X4, Y2, Y3 and Y4), distribution relation according to basic electric capacity promotes the electric current that discharges and recharges, or to the stitching of induction amount higher (being that basic electric capacity is less) (X0 for example, X1, X5, X6, Y0, Y1, Y5 and Y6), distribution relation according to basic electric capacity reduces the electric current that discharges and recharges, and makes induction amount symmetry and linear the equating of stitching X0 to X6 and Y0 to Y6.
Fig. 9 is the process flow diagram 300 of an alternative embodiment of the invention, the positional value of step 310 calculating object on touch control panel inductor, step 320 is calculated the distribution relation of induction amount between the same layer line mark according to formula 1 and 2, step 330 is carried out the firmware computing according to the distribution relation that step 320 produces, and makes through positional value and object after the computing and can not produce side-play amount between the pairing positional value on the touch control panel inductor.In one embodiment, the firmware computing of step 330 comprises that the distribution relation according to the induction amount increases or lower positional value.
In different embodiment, the compensation method of the induction amount of touch control panel inductor is by the described method matched combined of above each embodiment, make with layer to have symmetry and the linear induction amount that equates, or make between the positional value that calculates and the pairing positional value of object and can not produce side-play amount with stitching between different layers.
Claims (11)
1. the compensation method of the induction amount of a touch control panel inductor comprises the following steps:
Calculate the basic electric capacity of each stitching in this touch control panel inductor, thereby obtain the distribution relation of described basic electric capacity; And
Carry out the firmware computing according to this distribution relation, make the induction amount symmetry and the linearity of described stitching equate.
2. the method for claim 1, wherein this firmware computing comprises with multiplication and division or plus-minus method the induction amount of described stitching is done computing.
3. the method for claim 1, wherein this firmware computing comprises the frequency that adjustment discharges and recharges described stitching.
4. method as claimed in claim 3, wherein this adjustment frequency that described stitching is discharged and recharged comprises the high stitching of this basic electric capacity is promoted the frequency that this discharges and recharges.
5. the method for claim 1, wherein this firmware computing comprises the size of current that adjustment discharges and recharges described stitching.
6. method as claimed in claim 5, wherein this adjustment size of current that described stitching is discharged and recharged comprises the high stitching of this basic electric capacity is promoted the electric current that this discharges and recharges.
7. the method for claim 1, wherein said stitching is positioned at same inductive layer.
8. the method for claim 1, wherein said stitching is positioned at different inductive layers.
9. the compensation method of the induction amount of a touch control panel inductor comprises the following steps:
Calculate the positional value of an object on this touch control panel inductor;
Calculate the basic electric capacity of each stitching in this touch control panel inductor, be proportional to the distribution relation that the capacitance change of object on inductor and the ratio of basic electric capacity obtain the induction amount of described each stitching according to the induction amount; And
According to this distribution relation this positional value is carried out the firmware computing, make through this positional value and this object after the computing and can not produce side-play amount between the pairing positional value on this touch control panel inductor.
10. method as claimed in claim 9, wherein this firmware computing comprises increases or lowers this positional value.
11. method as claimed in claim 9, wherein said stitching is positioned at same inductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101125575A CN1949160B (en) | 2005-10-10 | 2005-10-10 | Induced quantity compensating method of touch controlling board inductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2005101125575A CN1949160B (en) | 2005-10-10 | 2005-10-10 | Induced quantity compensating method of touch controlling board inductor |
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| CN1949160A CN1949160A (en) | 2007-04-18 |
| CN1949160B true CN1949160B (en) | 2010-04-21 |
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| CN2005101125575A Expired - Fee Related CN1949160B (en) | 2005-10-10 | 2005-10-10 | Induced quantity compensating method of touch controlling board inductor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100565208C (en) * | 2007-08-13 | 2009-12-02 | 凌通科技股份有限公司 | The measuring method of the speed of conductor sliding on capacitance-type sensor |
| CN101393501B (en) * | 2007-09-17 | 2010-06-09 | 禾瑞亚科技股份有限公司 | Apparatus and method for judging contact position on touch control screen of capacitance touching control panel |
| CN101551730B (en) * | 2008-03-31 | 2010-12-15 | 义隆电子股份有限公司 | Capacitance touch pad with equilibrium correction and detection positioning method thereof |
| CN102193694B (en) * | 2010-03-11 | 2013-08-14 | 瑞鼎科技股份有限公司 | Electronic device for compensating capacitance tolerance |
| CN102968229A (en) * | 2012-11-07 | 2013-03-13 | 江苏美琪威电子科技有限公司 | Charging current compensation method and system of capacitance-type touch screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886687A (en) * | 1997-02-20 | 1999-03-23 | Gibson; William A. | Touch panel system utilizing capacitively-coupled electrodes |
| WO2005066755A2 (en) * | 2003-12-31 | 2005-07-21 | 3M Innovative Properties Company | Touch sensing with touch down and lift off sensitivity |
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2005
- 2005-10-10 CN CN2005101125575A patent/CN1949160B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886687A (en) * | 1997-02-20 | 1999-03-23 | Gibson; William A. | Touch panel system utilizing capacitively-coupled electrodes |
| WO2005066755A2 (en) * | 2003-12-31 | 2005-07-21 | 3M Innovative Properties Company | Touch sensing with touch down and lift off sensitivity |
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| CN1949160A (en) | 2007-04-18 |
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