CN103713760B - Touch control induction device and method - Google Patents
Touch control induction device and method Download PDFInfo
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- CN103713760B CN103713760B CN201210378618.2A CN201210378618A CN103713760B CN 103713760 B CN103713760 B CN 103713760B CN 201210378618 A CN201210378618 A CN 201210378618A CN 103713760 B CN103713760 B CN 103713760B
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Abstract
A kind of touch control induction device, including：Touch panel, for generating multiple transvercal induction signal value a1, a2..., anAnd multiple longitudinal induction signal value b1, b2..., bm, wherein m and n is the integer more than or equal to 2, and each transvercal induction signal value is corresponding with an abscissa, and each longitudinal induction signal value is corresponding with an ordinate；And computing unit, the coordinate for calculating touch point according to following formula（X, Y）,,, wherein X1, X2..., XnRespectively the multiple transvercal induction signal value a1, a2..., anCorresponding abscissa, Y1, Y2..., YmRespectively the multiple longitudinal induction signal value b1, b2..., bmCorresponding ordinate.Present invention further teaches a kind of touch control inducing methods.
Description
Technical field
The present invention relates to technical field of touch control, more particularly to a kind of touch control induction device and method.
Background technology
Touch technology has most just occurred early in the seventies, but widely applies on mobile phone or tablet computer, is in recent years
It just rises, is released as application is continuous, it is anticipated that touch technology is also by sustainable development in following several years.Common
Touch technology can be divided into five kinds：Singly refer to touch-control, Trackpad, electric resistance touch-control, capacitance touching control and optical touch, applies at present
It is most widely capacitance touching control technology.
Capacitance touching control technology, through the transverse direction and longitudinal direction inductive signal line on touch panel（sensing lines）Sense
The voltage value that should be arrived is passed to inside touch chip and processes, after touch chip receives the voltage value of each inductive signal line, meeting
It is converted into the digital inductive signal value for operation（sensing signals）, including multiple transvercal induction signal values and multiple
Longitudinal induction signal value, then transvercal induction signal value and the multiplication of longitudinal induction signal value are produced into a two-dimentional inductive signal value
Matrix（matrix of 2D sensing signals）, the coordinate of touch point is then found out with interpolation method（X, Y）.It is specific next
It says, the algorithm of X is that the two-dimentional inductive signal value on horizontal direction is multiplied by its corresponding abscissa respectively, is then summed, then remove
With the summation of the two-dimentional inductive signal value on horizontal direction；The algorithm of Y is the two-dimentional inductive signal value difference on longitudinal direction
Be multiplied by its corresponding ordinate, then sum, then divided by two-dimentional inductive signal value on longitudinal direction summation.
For above-mentioned capacitance touching control technology, transvercal induction signal value and the multiplication of longitudinal induction signal value are produced
Two-dimentional inductive signal value matrix can bring great computational load and memory space requirements, and with the increasing of inductive signal line
More, i.e. the quantity of transvercal induction signal value and longitudinal induction signal value increases, and computational load and memory space requirements can be at multiplications
Add, this can not only reduce the treatment effeciency of touch-control sensing（Computational load increases）, also will increase the volume of touch chip（Storage is empty
Between increase in demand）, increase the production cost of touch control induction device, also run counter to the lightening development trend of touch control induction device.
Invention content
In view of the foregoing, it is necessary to a kind of touch control induction device and method are provided, computational load and storage can be reduced
Space requirement.
A kind of touch control induction device, the touch control induction device include：
Touch panel, including a plurality of transvercal induction signal wire and a plurality of longitudinal induction signal wire, for generating multiple transverse directions
Inductive signal value a1, a2..., anAnd multiple longitudinal induction signal value b1, b2..., bm, wherein m and n is more than or equal to 2
Integer, each transvercal induction signal value is corresponding with an abscissa, and each longitudinal induction signal value is corresponding with an ordinate；And
Computing unit, the coordinate for calculating touch point according to following formula（X, Y）,
,
,
Wherein, X1, X2..., XnRespectively the multiple transvercal induction signal value a1, a2..., anCorresponding abscissa,
Y1, Y2..., YmRespectively the multiple longitudinal induction signal value b1, b2..., bmCorresponding ordinate.
Preferably, the computing unit is additionally operable to the multiple transvercal induction signal value a1, a2..., anRespectively with one
Transvercal induction signal threshold values compares, and is rejected less than the transvercal induction signal threshold values from the multiple transvercal induction signal value
Transvercal induction signal value, and calculate according to filtered multiple transvercal induction signal values the abscissa of the touch point.
Preferably, the computing unit is additionally operable to the multiple longitudinal induction signal value b1, b2..., bmRespectively with one
Longitudinal induction signal threshold values compares, and is rejected less than the longitudinal induction signal threshold values from the multiple longitudinal induction signal value
Longitudinal induction signal value, and calculate according to filtered longitudinal induction signal value the ordinate of the touch point.
A kind of touch control induction device, the touch control induction device include：
Touch panel, including a plurality of transvercal induction signal wire and a plurality of longitudinal induction signal wire, for generating multiple transverse directions
Inductive signal value a1, a2..., anAnd multiple longitudinal induction signal value b1, b2..., bm, wherein n and m is more than or equal to 2
Integer, each transvercal induction signal value is corresponding with an abscissa, and each longitudinal induction signal value is corresponding with an ordinate；And
Computing unit is used for from the multiple transvercal induction signal value a1, a2..., anIt is middle to choose maximum r laterally sense
Induction signal value A1, A2..., Ar（R is the integer more than or equal to 2, and is less than or equal to n）, believe from the multiple longitudinal induction
Number value b1, b2..., bmIt is middle to choose maximum s longitudinal induction signal value B1, B2..., Bs（S is the integer more than or equal to 2,
And it is less than or equal to m）, the coordinate of touch point is calculated according to following formula（X, Y）,
,
,
Wherein, X1, X2..., XrThe respectively described maximum r transvercal induction signal value A1, A2..., ArCorresponding cross
Coordinate, Y1, Y2..., YsThe respectively described maximum s longitudinal induction signal value B1, B2..., BsCorresponding abscissa.
Preferably, the computing unit is used for from the multiple transvercal induction signal value a1, a2..., anMiddle selection is maximum
Two transvercal induction signal values, and calculate according to two selected transvercal induction signal values the horizontal seat of the touch point
Mark.
Preferably, the computing unit is used for from the multiple longitudinal induction signal value b1, b2..., bmMiddle selection is maximum
Two longitudinal induction signal values, and calculate according to two selected longitudinal induction signal values the vertical seat of the touch point
Mark.
A kind of touch control inducing method, the touch control inducing method include：
Sensing step, touch panel induction press, and generate multiple transvercal induction signal value a1, a2..., anAnd multiple longitudinal directions
Inductive signal value b1, b2..., bm, wherein m and n is the integer more than or equal to 2, each transvercal induction signal value and a cross
Coordinate pair is answered, and each longitudinal induction signal value is corresponding with an ordinate；And
Step is calculated, the coordinate of touch point is calculated according to following formula（X, Y）,
,
,
Wherein, X1, X2..., XnRespectively the multiple transvercal induction signal value a1, a2..., anCorresponding abscissa,
Y1, Y2..., YmRespectively the multiple longitudinal induction signal value b1, b2..., bmCorresponding ordinate.
Preferably, the calculating step includes：By the multiple transvercal induction signal value a1, a2..., anIt is horizontal with one respectively
Compare to inductive signal threshold values, the cross less than the transvercal induction signal threshold values is rejected from the multiple transvercal induction signal value
To inductive signal value, and calculate according to filtered multiple transvercal induction signal values the abscissa of the touch point.
Preferably, the calculating step includes：By the multiple longitudinal induction signal value b1, b2..., bmIt is vertical with one respectively
Compare to inductive signal threshold values, is rejected from the multiple longitudinal induction signal value vertical less than the longitudinal induction signal threshold values
To inductive signal value, and calculate according to filtered longitudinal induction signal value the ordinate of the touch point.
A kind of touch control inducing method, the touch control inducing method include：
Sensing step, touch panel induction press, and generate multiple transvercal induction signal value a1, a2..., anAnd multiple longitudinal directions
Inductive signal value b1, b2..., bm, wherein n and m is the integer more than or equal to 2, each transvercal induction signal value and a cross
Coordinate pair is answered, and each longitudinal induction signal value is corresponding with an ordinate；And
Step is calculated, from the multiple transvercal induction signal value a1, a2..., anIt is middle to choose maximum r transvercal induction letter
Number value A1, A2..., Ar（R is the integer more than or equal to 2, and is less than or equal to n）, from the multiple longitudinal induction signal value
b1, b2..., bmIt is middle to choose maximum s longitudinal induction signal value B1, B2..., Bs（S is the integer more than or equal to 2, and small
In or equal to m）, the coordinate of touch point is calculated according to following formula（X, Y）,
,
,
Wherein, X1, X2..., XrThe respectively described maximum r transvercal induction signal value A1, A2..., ArCorresponding cross
Coordinate, Y1, Y2..., YsThe respectively described maximum s longitudinal induction signal value B1, B2..., BsCorresponding abscissa.
Preferably, the calculating step includes：From the multiple transvercal induction signal value a1, a2..., anMiddle selection is maximum
Two transvercal induction signal values, and calculate according to two selected transvercal induction signal values the horizontal seat of the touch point
Mark.
Preferably, the calculating step includes：From the multiple longitudinal induction signal value b1, b2..., bmMiddle selection is maximum
Two longitudinal induction signal values, and calculate according to two selected longitudinal induction signal values the vertical seat of the touch point
Mark.
Compared with prior art, above-mentioned touch control induction device and method, the computing unit is due to need not be by the n
Transvercal induction signal value a1, a2..., anWith the m longitudinal induction signal value b1, b2..., bmIt is multiplied, generates so-called two
Inductive signal value matrix is tieed up, computational load is greatly alleviated and reduces the demand of memory space, be conducive to touch chip
Cost compression and volume Miniaturization Design.
Description of the drawings
Fig. 1 is the functional block diagram of the touch control induction device in one embodiment of the present invention.
Fig. 2 is the schematic diagram of the touch panel in one embodiment of the present invention.
Fig. 3 is the example for the inductive signal value that the touch panel in one embodiment of the present invention generates.
Fig. 4 is the memory space requirements that the typical case in one embodiment of the present invention is saved compared with the existing technology
Ratio table.
Fig. 5 is that the typical case in one embodiment of the present invention saves memory space ratio compared with the existing technology
Block diagram.
Fig. 6 is the flow chart of the touch control inducing method in one embodiment of the present invention.
Fig. 7 is the flow chart of the touch control inducing method in another embodiment of the present invention.
Main element symbol description
| Touch control induction device | 10 |
| Touch panel | 12 |
| Computing unit | 16 |
Following specific implementation mode will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
Specific implementation mode
Referring to Fig. 1, schematically illustrating the touch control induction device 10 according to one embodiment of the present invention, institute in figure
It includes touch panel 12 and computing unit 16 to state touch control induction device 10.The touch control induction device 10 can be laptop
Trackpad, the touch screen of smart mobile phone or the touch control induction equipment of other electronic equipments.
The touch panel 12 includes a plurality of transvercal induction signal wire and a plurality of longitudinal induction signal wire, each transvercal induction
There are one abscissas for signal wire correspondence, and there are one ordinates for each longitudinal induction signal wire correspondence.The a plurality of transvercal induction letter
Number line and a plurality of longitudinal induction signal wire are distributed in crisscrossly on the touch panel 12, form a two dimension（2D）
Coordinate system.
When user presses the touch panel 12, a plurality of transvercal induction signal wire and a plurality of longitudinal induction
Signal wire will increase in the capacitance for pressing the capacitor near position, to generate multiple transvercal induction signal values and multiple vertical
To inductive signal value.Each transvercal induction signal value represents pressing by force suffered by the correspondence abscissa on the touch panel 12
Degree, the transvercal induction signal value is bigger, indicate suffered by corresponding abscissa to press intensity bigger；Each longitudinal induction signal
What value represented that the correspondence ordinate on the touch panel 12 received presses intensity, and the longitudinal induction signal value is bigger, table
Show suffered by corresponding ordinate to press intensity bigger.
Referring to Fig. 2, showing the schematic diagram of the touch panel 12 according to one embodiment of the present invention.The touch surface
Plate 12 includes n transvercal induction signal wire and m longitudinal induction signal wire, the corresponding horizontal seat of the n transvercal induction signal wire
Mark is denoted as X respectively1, X2..., Xn, the corresponding vertical seat of the m longitudinal induction signal wire is respectively labeled as Y1, Y2..., Ym,
In, n and m are the integer more than or equal to 2.In schematic diagram shown in Fig. 2, n and m are equal to 5.
Referring to Fig. 3, showing the inductive signal value generated according to the touch panel 12 of one embodiment of the present invention
Example.When user presses the touch panel 12, correspond to the abscissa X1, X2..., Xn, the n transvercal induction
Signal wire generates n transvercal induction signal value a respectively1, a2..., an, correspond to the ordinate Y1, Y2..., Ym, the m
Longitudinal induction signal wire generates m longitudinal induction signal value b respectively1, b2..., bm, wherein n and m is more than or equal to 2
Integer.In the example depicted in fig. 3, n and m are equal to 5.
The computing unit 16 is connect with the touch panel 12, described more for being generated according to the touch panel 12
A transvercal induction signal and the multiple longitudinal induction signal determine that touch point of the user on the touch panel 12 is sat
Mark.
In a first embodiment, the computing unit 16 calculates the coordinate of touch point according to following formula（X, Y）,
,
,
Wherein, a1, a2..., anRepresent the n transvercal induction signal value that the n transvercal induction signal wire generates, b1,
b2..., bmRepresent the m longitudinal induction signal value that the m longitudinal induction signal wire generates, X1, X2..., XnIt respectively represents
The n transvercal induction signal value a1, a2..., anCorresponding abscissa, Y1, Y2..., YmRespectively represent described m longitudinal sense
Induction signal value b1, b2..., bmCorresponding ordinate.
Compared to the prior art, the computing unit 16 in the first embodiment is due to need not be by the n
Transvercal induction signal value a1, a2..., anWith the m longitudinal induction signal value b1, b2..., bmIt is multiplied, generates so-called two
Inductive signal value matrix is tieed up, computational load is greatly alleviated and reduces the demand of memory space, be conducive to touch chip
Cost compression and volume Miniaturization Design.
In order to be further reduced in the demand for calculating operand and memory space during pressing point coordinates, described
In first embodiment, the computing unit 16 is before calculating presses point coordinates to the n transvercal induction signal value a1,
a2..., anWith the m longitudinal induction signal value b1, b2..., bmIt is filtered, and according to filtered inductive signal value meter
Calculate the coordinate of the touch point（X, Y）.In particular, the computing unit 16 is by the n transvercal induction signal value a1,
a2..., anIt is compared respectively with a transvercal induction signal threshold values, is rejected from the n transvercal induction signal value and be less than institute
The transvercal induction signal value of transvercal induction signal threshold values is stated, and described press is calculated according to filtered transvercal induction signal value
The abscissa X of point.Similarly, the computing unit 16 is by the m longitudinal induction signal value b1, b2..., bmIt is vertical with one respectively
Compare to inductive signal threshold values, is rejected from the m longitudinal induction signal value vertical less than the longitudinal induction signal threshold values
To inductive signal value, and calculate according to filtered longitudinal induction signal value the ordinate Y of the touch point.In this way, participating in
The inductive signal value quantity of 16 operation of the computing unit is reduced, and is further mitigated on the basis of the first embodiment
Computational load and the demand for reducing memory space.
In a second embodiment, the computing unit 16 is from the n transvercal induction signal value a1, a2..., anIn
Choose maximum r transvercal induction signal value A1, A2..., Ar（R is the integer more than or equal to 2, and is less than or equal to n）, from
The m longitudinal induction signal value b1, b2..., bmIt is middle to choose maximum s transvercal induction signal value B1, B2..., Bs（S is
Integer more than or equal to 2, and it is less than or equal to m）, the coordinate of touch point is calculated according to following formula（X, Y）,
,
,
Wherein, A1, A2..., ArIt represents from the n transvercal induction signal value a1, a2..., anThe maximum r of middle selection
A transvercal induction signal value, B1, B2..., BsIt represents from the m longitudinal induction signal value b1, b2..., bmMiddle selection is maximum
S longitudinal induction signal value, X1, X2..., XrRespectively represent the maximum r transvercal induction signal value A1, A2..., Ar
Corresponding abscissa, Y1, Y2..., YsRespectively represent the maximum s longitudinal induction signal value B1, B2..., BsIt is corresponding
Ordinate.
Compared to the prior art, on the one hand, the computing unit 16 in the second embodiment is due to that need not incite somebody to action
The n transvercal induction signal value a1, a2..., anWith the m longitudinal induction signal value b1, b2..., bmIt is multiplied, generates institute
The two-dimentional inductive signal value matrix of meaning, greatly alleviates computational load and reduces the demand of memory space, be conducive to touch
Control cost compression and the Miniaturization Design of volume of chip.On the other hand, the calculating list in the second embodiment
Member 16 is before the coordinate for calculating touch point, from the n transvercal induction signal value and the m longitudinal induction signal value respectively
Maximum r transvercal induction signal value and s longitudinal induction signal value are chosen, further reduces and participates in the computing unit 16
The data volume of operation also reduces the memory space requirements of data.
In a typical case of the second embodiment, the r and the equal values of s are 2, i.e., the computing unit 16 from
The n transvercal induction signal value a1, a2..., anIt is middle to choose maximum two transvercal induction signal values A1And A2, from the m
Longitudinal induction signal value b1, b2..., bmIt is middle to choose maximum two longitudinal induction signal values B1And B2, and according to following formula meter
Calculate the coordinate of the touch point（X, Y）,
,
,
Wherein, A1, A2It represents from the n transvercal induction signal value a1, a2..., anMaximum two transverse directions of middle selection
Inductive signal value, B1, B2It represents from the m longitudinal induction signal value b1, b2..., bmIt is middle to choose maximum two longitudinal inductions
Signal value, X1, X2Respectively represent maximum two transvercal induction signal values A1, A2Corresponding abscissa, Y1, Y2It respectively represents
Maximum two longitudinal induction signal values B1, B2Corresponding ordinate.
In above-mentioned typical case, the progress highly significant that the present invention obtains on reducing memory space requirements, Er Qiesui
The increase of the quantity of inductive signal line in length and breadth, this progress is all the more notable.Since the computing unit 16 calculates touch point
The principle of abscissa X and ordinate Y is identical, therefore below only to be illustrated relative to existing for the abscissa X for calculating touch point
There are technology, marked improvement of the above-mentioned typical case on reducing memory space requirements.
Referring to Fig. 4, schematically illustrating the memory space requirements that above-mentioned typical case is saved compared with the existing technology
Ratio.Here, with basic unit of storage for 7（bits）For.
Since the above-mentioned typical case of the present invention only takes two maximum transvercal induction signal values to participate in operation, therefore ought be in length and breadth
When inductive signal line takes any amount, required memory space is fixed 37.In particular, choosing two maximum cross
Need to occupy two basic units of storage, that is, 7 × 2=14 to inductive signal value, then by the two transvercal induction signal values
When substituting into operation in the formula of above-mentioned typical case, molecular moiety is that the multiplication of two groups of two 7 digits is summed again, need 7 × 2+1=
15 memory spaces, denominator part be two 7 digits and, need the memory space of 7+1=8, in this manner it is possible to obtain,
The above-mentioned typical case of the present invention needs the memory space of 14+15+8=37.
And in the prior art, when the quantity of inductive signal line in length and breadth increases, required memory space also can be corresponding
Increase.
In the prior art, when the quantity of inductive signal line in length and breadth is 2 × 2, it is necessary first to believe two transvercal inductions
Number value is multiplied one 2 × 2 two-dimentional inductive signal value matrix of generation with two longitudinal induction signal values, in the cross of calculating touch point
When coordinate, denominator part is that four groups of three 7 digits multiplications are summed again, needs the memory space of 7 × 3+1+1=23, denominator part
It is that four groups of two 7 digits multiplications are summed again, the memory space of 7 × 2+1+1=16 is needed, in this manner it is possible to obtain, existing skill
Art needs the memory space of 23+16=39 when the quantity of inductive signal line in length and breadth is 2 × 2.At this point, the above-mentioned allusion quotation of the present invention
Type example section space-efficient ratio is 5.4%.
In the prior art, when the quantity of inductive signal line in length and breadth is 3 × 3, it is necessary first to believe three transvercal inductions
Number value is multiplied one 3 × 3 two-dimentional inductive signal value matrix of generation with three longitudinal induction signal values, in the cross of calculating touch point
When coordinate, denominator part is that nine groups of three 7 digits multiplications are summed again, needs the memory space of 7 × 3+1+1+1+1=25, denominator
Part is that nine groups of two 7 digits multiplications are summed again, needs the memory space of 7 × 2+1+1+1+1=18, in this manner it is possible to
Go out, the prior art needs the memory space of 25+18=43 when the quantity of inductive signal line in length and breadth is 3 × 3.At this point, this hair
Bright above-mentioned typical case section space-efficient ratio is 16.2%.
It may further summarize, in the prior art, when the quantity of inductive signal line in length and breadth is n × n, required storage
The digit in space is, wherein n is the integer more than or equal to 2, and accordingly, above-mentioned typical case of the invention shows
Example saves space-efficient ratio（%）.
Referring to Fig. 5, schematically illustrate when the quantity of the line of induction in length and breadth from 2 × 2 to 18 × 18 when, of the invention is upper
State the block diagram that typical case saves memory space ratio compared with the existing technology.It can be seen from the figure that with incuding in length and breadth
The quantity of line increases to 18 × 18 from 2 × 2, the ratio of the saved memory space of above-mentioned typical case of the invention also therewith from
5.4% increases to 91.9%, and in other words, compared with the existing technology, the quantity of the line of induction is more in length and breadth, above-mentioned typical case of the invention
The saved space proportion of example is higher, and possessed progressive is more apparent.
Referring to Fig. 6, schematically illustrating the stream of the touch control inducing method according to one embodiment of the present invention in figure
Cheng Tu the described method comprises the following steps：
Step S601, the induction of the touch panel 12 press, and generate n transvercal induction signal value a1, a2..., anWith m
Longitudinal induction signal value b1, b2..., bm, wherein n and m is the integer more than or equal to 2.
Step S602, the computing unit 16 calculate the coordinate of touch point according to following formula（X, Y）,
,
,
Wherein, a1, a2..., anRepresent the n transvercal induction signal value, b1, b2..., bmRepresent the m longitudinal direction
Inductive signal value, X1, X2..., XnRespectively represent the n transvercal induction signal value a1, a2..., anCorresponding abscissa,
Y1, Y2..., YmRespectively represent the m longitudinal induction signal value b1, b2..., bmCorresponding ordinate.
In a kind of improved embodiment based on the above embodiment, the computing unit 16 is calculating touch point seat
To the n transvercal induction signal value a before mark1, a2..., anWith the m longitudinal induction signal value b1, b2..., bmIt carries out
It filters, and calculates the coordinate of the touch point according to filtered inductive signal value（X, Y）.
Referring to Fig. 7, being schematically illustrated in figure according to the touch control inducing method of another embodiment of the present invention
Flow chart the described method comprises the following steps：
Step S701, the induction of the touch panel 12 press, and generate n transvercal induction signal value a1, a2..., anWith m
Longitudinal induction signal value b1, b2..., bm, wherein n and m is the integer more than or equal to 2.
Step S702, the computing unit 16 is from the n transvercal induction signal value a1, a2..., anMiddle selection is maximum
R transvercal induction signal value A1, A2..., Ar（R is the integer more than or equal to 2, and is less than or equal to n）, vertical from the m
To inductive signal value b1, b2..., bmIt is middle to choose maximum s longitudinal induction signal value B1, B2..., Bs（S be more than or equal to
2 integer, and it is less than or equal to m）.
Step S703, the computing unit 16 calculate the coordinate of touch point according to following formula（X, Y）,
,
,
Wherein, A1, A2..., ArIt represents from the n transvercal induction signal value a1, a2..., anThe maximum r of middle selection
A transvercal induction signal value, B1, B2..., BsIt represents from the m longitudinal induction signal value b1, b2..., bmMiddle selection is maximum
S longitudinal induction signal value, X1, X2..., XrRespectively represent the maximum r transvercal induction signal value A1, A2..., Ar
Corresponding abscissa, Y1, Y2..., YsRespectively represent the maximum s longitudinal induction signal value B1, B2..., BsIt is corresponding
Ordinate.
In a typical case of the above embodiment, the r and the equal values of s are 2, i.e., the described computing unit 16 is from described
N transvercal induction signal value a1, a2..., anIt is middle to choose maximum two transvercal induction signal values A1And A2, longitudinal from described m
Inductive signal value b1, b2..., bmIt is middle to choose maximum two longitudinal induction signal values B1And B2, and calculated according to following formula
The coordinate of the touch point（X, Y）,
,
,
Wherein, A1, A2It represents from the n transvercal induction signal value a1, a2..., anMaximum two transverse directions of middle selection
Inductive signal value, B1, B2It represents from the m longitudinal induction signal value b1, b2..., bmIt is middle to choose maximum two longitudinal inductions
Signal value, X1, X2Respectively represent maximum two transvercal induction signal values A1, A2Corresponding abscissa, Y1, Y2It respectively represents
Maximum two longitudinal induction signal values B1, B2Corresponding ordinate.
It will be apparent to those skilled in the art that the reality of production can be combined with scheme of the invention according to the present invention and inventive concept
Border needs to make other to be altered or modified accordingly, and these change and adjustment should all belong to the protection models of the claims in the present invention
It encloses.
Claims (8)
1. a kind of touch control induction device, it is characterised in that：The touch control induction device includes：
Touch panel, including a plurality of transvercal induction signal wire and a plurality of longitudinal induction signal wire, for generating multiple transvercal inductions
Signal value a1, a2..., anAnd multiple longitudinal induction signal value b1, b2..., bm, wherein m and n is whole more than or equal to 2
Number, each transvercal induction signal value is corresponding with an abscissa, and each longitudinal induction signal value is corresponding with an ordinate；And
Computing unit, the coordinate Y for calculating touch point according to following formula, and by the multiple transvercal induction signal value a1,
a2..., anRespectively compared with a transvercal induction signal threshold values, is rejected from the multiple transvercal induction signal value and be less than the cross
Described press is calculated to the transvercal induction signal value of inductive signal threshold values, and according to filtered multiple transvercal induction signal values
The abscissa X of point,
Wherein, X1, X2..., XnRespectively the multiple transvercal induction signal value a1, a2..., anCorresponding abscissa, Y1,
Y2..., YmRespectively the multiple longitudinal induction signal value b1, b2..., bmCorresponding ordinate.
2. touch control induction device as described in claim 1, it is characterised in that：The computing unit is additionally operable to will be the multiple vertical
To inductive signal value b1, b2..., bmRespectively compared with a longitudinal induction signal threshold values, from the multiple longitudinal induction signal value
The middle longitudinal induction signal value rejected less than the longitudinal induction signal threshold values, and according to filtered longitudinal induction signal value meter
Calculate the ordinate of the touch point.
3. a kind of touch control induction device, it is characterised in that：The touch control induction device includes：
Touch panel, including a plurality of transvercal induction signal wire and a plurality of longitudinal induction signal wire, for generating multiple transvercal inductions
Signal value a1, a2..., anAnd multiple longitudinal induction signal value b1, b2..., bm, wherein n and m is whole more than or equal to 2
Number, each transvercal induction signal value is corresponding with an abscissa, and each longitudinal induction signal value is corresponding with an ordinate；And
Computing unit is used for from the multiple transvercal induction signal value a1, a2..., anIt is middle to choose maximum r transvercal induction letter
Number value A1, A2..., Ar, wherein r is the integer more than or equal to 2 and is less than or equal to n, from the multiple longitudinal induction signal
Value b1, b2..., bmIt is middle to choose maximum s longitudinal induction signal value B1, B2..., Bs, wherein s is whole more than or equal to 2
Number and it is less than or equal to m, calculates the coordinate X of touch point according to following formula, and from the multiple longitudinal induction signal value b1,
b2..., bmIt is middle to choose maximum two longitudinal induction signal values, and calculated according to two selected longitudinal induction signal values
The ordinate Y of the touch point,
Wherein, X1, X2..., XrThe respectively described maximum r transvercal induction signal value A1, A2..., ArCorresponding abscissa,
Y1, Y2..., YsThe respectively described maximum s longitudinal induction signal value B1, B2..., BsCorresponding abscissa.
4. touch control induction device as claimed in claim 3, it is characterised in that：The computing unit is used for from the multiple transverse direction
Inductive signal value a1, a2..., anIt is middle to choose maximum two transvercal induction signal values, and according to selected two laterally senses
Induction signal value calculates the abscissa of the touch point.
5. a kind of touch control inducing method, it is characterised in that：The touch control inducing method includes：
Sensing step, touch panel induction press, and generate multiple transvercal induction signal value a1, a2..., anAnd multiple longitudinal inductions
Signal value b1, b2..., bm, wherein m and n is the integer more than or equal to 2, each transvercal induction signal value and an abscissa
Corresponding, each longitudinal induction signal value is corresponding with an ordinate；And
Step is calculated, calculates the coordinate X of touch point according to following formula, and by the multiple longitudinal induction signal value b1,
b2..., bmRespectively compared with a longitudinal induction signal threshold values, is rejected from the multiple longitudinal induction signal value and be less than described indulge
The touch point is calculated to the longitudinal induction signal value of inductive signal threshold values, and according to filtered longitudinal induction signal value
Ordinate Y,
Wherein, X1, X2..., XnRespectively the multiple transvercal induction signal value a1, a2..., anCorresponding abscissa, Y1,
Y2..., YmRespectively the multiple longitudinal induction signal value b1, b2..., bmCorresponding ordinate.
6. touch control inducing method as claimed in claim 5, it is characterised in that：The calculating step includes：By the multiple cross
To inductive signal value a1, a2..., anRespectively compared with a transvercal induction signal threshold values, from the multiple transvercal induction signal value
The middle transvercal induction signal value rejected less than the transvercal induction signal threshold values, and according to filtered multiple transvercal induction signals
Value calculates the abscissa of the touch point.
7. a kind of touch control inducing method, it is characterised in that：The touch control inducing method includes：
Sensing step, touch panel induction press, and generate multiple transvercal induction signal value a1, a2..., anAnd multiple longitudinal inductions
Signal value b1, b2..., bm, wherein n and m is the integer more than or equal to 2, each transvercal induction signal value and an abscissa
Corresponding, each longitudinal induction signal value is corresponding with an ordinate；And
Step is calculated, from the multiple transvercal induction signal value a1, a2..., anIt is middle to choose maximum r transvercal induction signal value
A1, A2..., Ar, wherein r is the integer more than or equal to 2 and is less than or equal to n, from the multiple longitudinal induction signal value
b1, b2..., bmIt is middle to choose maximum s longitudinal induction signal value B1, B2..., Bs, wherein s is the integer more than or equal to 2
And it is less than or equal to m, calculate the coordinate Y of touch point according to following formula, and from the multiple transvercal induction signal value a1,
a2..., anIt is middle to choose maximum two transvercal induction signal values, and calculated according to two selected transvercal induction signal values
The abscissa X of the touch point：
Wherein, X1, X2..., XrThe respectively described maximum r transvercal induction signal value A1, A2..., ArCorresponding abscissa,
Y1, Y2..., YsThe respectively described maximum s longitudinal induction signal value B1, B2..., BsCorresponding abscissa.
8. touch control inducing method as claimed in claim 7, it is characterised in that：The calculating step includes：It is indulged from the multiple
To inductive signal value b1, b2..., bmIt is middle to choose maximum two longitudinal induction signal values, and according to two selected longitudinal directions
Inductive signal value calculates the ordinate of the touch point.
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| CN101634914A (en) * | 2008-07-22 | 2010-01-27 | 福州星网视易信息系统有限公司 | Three-point calibration method based on nonuniform touch screen |
| CN101639743A (en) * | 2009-07-06 | 2010-02-03 | 友达光电股份有限公司 | Touch-control detection method |
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| CN101634914A (en) * | 2008-07-22 | 2010-01-27 | 福州星网视易信息系统有限公司 | Three-point calibration method based on nonuniform touch screen |
| CN101639743A (en) * | 2009-07-06 | 2010-02-03 | 友达光电股份有限公司 | Touch-control detection method |
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