CN108121461A - Stylus touch position method for detecting and system - Google Patents
Stylus touch position method for detecting and system Download PDFInfo
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- CN108121461A CN108121461A CN201611070996.9A CN201611070996A CN108121461A CN 108121461 A CN108121461 A CN 108121461A CN 201611070996 A CN201611070996 A CN 201611070996A CN 108121461 A CN108121461 A CN 108121461A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The present invention proposes a kind of stylus touch position method for detecting and system, and to detect practical touch position of the stylus on a touch detection panel, this method is first using a capacitance touch detection, to obtain the touching initial data of the touch detection panel.A first area is chosen in the touching initial data, and touch coordinate is detected to obtain one first by first area calculating.It chooses an at least second area in the touching initial data again, and is calculated by an at least second area to obtain a helper data set.Finally according to the first detecting touch coordinate and the helper data set, calculate and obtain a practical touch coordinate.
Description
Technical field
The technical field that the present invention is detected on touch position espespecially a kind of stylus touch position method for detecting and is
System.
Background technology
Figure 1A is the appearance diagram of an existing capacitance touch-control device 100.Capacitance touch-control device 100 can select collocation one
Stylus 110 uses.Capacitance touch-control device 100 has a display panel 120 and a touch sensing layer 130.Touch sensing layer
130 are located at 120 lower section of display panel, with a plurality of touch sensing nodes 131, for sensing the touching display of stylus 110
The position of stylus 110 during panel 120.When stylus 110 touches display panel 120, touch sensing layer 130 can sense capacitance
Change degree of strength, to judge the information such as writing position, person's handwriting, pressure.Stylus 110 has an axis of orientation 111.Axis of orientation
111 parallel to stylus 110 pen body.As shown in Figure 1A, the surface shape of axis of orientation 111 and display panel 120 has angle angle
Spend θ.When user's handheld touch pen 110 and (θ is equal to 90 °) when touching display panel 120 in a manner of 90 °, stylus 110 is touched
Touch the region of sense node 133.Therefore it can detect the region of 110 touch sensing node 133 of stylus.
Figure 1B uses schematic diagram for an existing capacitance touch-control device 100.As shown in Figure 1B, when user's handheld touch pen
110 and when touching display panel 120 with non-perpendicular fashion (θ be not equal to 90 °), since stylus 110 is as metallic conductor, therefore
Its pen body can also make touch sensing layer 130 generate capacitance variations.That is, except touch sensing node 133 senses capacitance variations
Outside, touch sensing node 135 can also sense capacitance variations.Therefore the touch points position detected can be made to stylus 110
The inclined direction offset of body.Fig. 2 is the schematic diagram of an existing 110 touch position error of stylus.As shown in Fig. 2, 210 table of dotted line
Show that stylus 110 touches the physical location of display panel 120, and solid line 220 represents that stylus 110 touches the display panel 120
When the position that is sensed.It is many tired that the physical location of this touching and the error of sensing the feedback of position can allow user to be generated on using
It disturbs.Therefore, existing stylus touch position detection techniques still have improved space in fact.
The content of the invention
The purpose of the present invention is mainly providing a kind of stylus touch position method for detecting and system, can correct stylus
Touch-control coordinate shift during inclination, and angle of inclination and the inclined degree of stylus can be detected.When practical application, it can solve
When stylus tilt the problem of the centre-of gravity shift of produced sensor signal, and then the use experience of user can be improved.
A characteristic according to the invention, the present invention propose a kind of stylus touch position method for detecting, are touched to detect one
Practical touch position of the pen on a touch detection panel is controlled, the method comprising the steps of：(A) a capacitance touch detection is used, with
Obtain the touching initial data of the touch detection panel；(B) choose a first area in the touching initial data, and by this
One region calculates to obtain one first detecting touch coordinate；(C) an at least second area is chosen in the touching initial data, and
It is calculated to obtain a helper data set by an at least second area；And (D) is according to the first detecting touch coordinate and this is auxiliary
Data group is helped, calculates and obtains a practical touch coordinate.
Another characteristic according to the invention, the present invention propose a kind of system with the detecting of stylus touch position, this is
System includes a touch detection panel and a processing unit.The processing unit is connected to the touch detection panel, which connects
Receive the touching initial data of the touch detection panel.The processing unit chooses a first area in the touching initial data, and
It is calculated by the first area and obtains one first detecting touch coordinate.The processing unit chooses at least one in the touching initial data
Second area, and calculated by an at least second area and obtain a helper data set.According to the first detecting touch coordinate and it is somebody's turn to do
Helper data set, the processing unit carry out one and calculate to obtain a practical touch coordinate.
Description of the drawings
Figure 1A be one it is existing be capacitance touch-control device appearance diagram.
Figure 1B be one it is existing be capacitance touch-control device use schematic diagram.
Fig. 2 is the schematic diagram of an existing stylus touch position error.
Fig. 3 is the schematic diagram of the system with the detecting of stylus touch position of the present invention.
Fig. 4 is another schematic diagram of the system with the detecting of stylus touch position of the present invention.
Fig. 5 is a kind of flow chart of stylus touch position method for detecting of the present invention.
The schematic diagram of initial data is touched when Fig. 6 is mutual capacitance touch detection of the present invention.
Fig. 7 is the present invention with the partial schematic diagram of the touching initial data of an example of mutual capacitance touch detection.
Fig. 8 is the schematic diagram that the present invention calculates practical touch coordinate.
Fig. 9 A, Fig. 9 B, Fig. 9 C are the schematic diagram that the present invention generates penalty coefficient.
Figure 10 is the present invention with the partial schematic diagram of the touching initial data of another example of mutual capacitance touch detection.
Figure 11 is the present invention with the partial schematic diagram of the touching initial data of an example of self-capacitance touch detection.
Figure 12 is the present invention with the partial schematic diagram of the touching initial data of another example of self-capacitance touch detection.
Figure 13 is the schematic diagram that stylus of the present invention has angle on XY coordinates with Y-axis shape.
Reference sign：
Capacitance touch-control device 100
110 display panel 120 of stylus
130 touch sensing node 131 of touch sensing layer
111 pixel 150 of axis of orientation
Second transistor M2
133 touch sensing node 135 of touch sensing node
210 solid line 220 of dotted line
System 300 with the detecting of stylus touch position
310 touch detection panel 320 of stylus
330 display screen 321 of processing unit
First touch detection layer, 323 second touch detection layer 325
3231 transparent electrode 3251 of transparent electrode
327 transparent electrode 3271 of touch detection layer
Step (A)~(D)
Angle theta angle μ
510 second area 520 of first area
Auxiliary area 520-1,520-2,520-3,520-4
First touching original data region 101 second touches original data region 102
3rd touching original data region 103 the 4th touches original data region 104
Auxiliary area 105,106,107,108
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 3 is the schematic diagram of the system 300 with the detecting of stylus touch position of the present invention.There should be stylus touching
The system 300 of position detecting includes a stylus 310, a touch detection panel 320 and a processing unit 330.
Touch detection panel 320 includes a display screen 321, one first touch detection layer 323 and one second touch detection
Layer 325.The first touch detection layer 323 has the most transparent electrodes 3231 that (X-direction) arranges along the first direction.This
Two touch detection layers 325 have the most transparent electrodes 3251 that (Y direction) arranges in a second direction.
When perform capacitance touch detection, with obtain two dimension initial data (touch raw data) when, can be using mutually
The mode of capacitance touch detection.For example, transparent electrode 3251 is touch-control sensing signal (TX) electrode, transparent electrode 3231 is sensing
(RX) electrode.That is, processing unit 330 sequentially can provide touch-control sensing signal (TX) to transparent electrode 3251, and sequentially read saturating
The sensing signal of prescribed electrode 3231, to obtain the touching initial data of the touch detection panel 320.The touching initial data at this time
For the data of two dimension.
When performing capacitance touch detection, e.g. touched with self-capacitance in the embodiment that detecting obtains one-dimensional initial data, it can
To be transparent electrode 3231 arranged in the first direction and the transparent electrode 3251 arranged in a second direction is performed both by driving and feels
Brake.That is, processing unit 330 sequentially can provide touch-control sensing signal (TX) to transparent electrode 3231, and sequentially read transparent
The sensing sequence number of electrode 3231, and processing unit 330 also sequentially by touch-control sensing signal (TX) provide transparent electrode 3251, then according to
Sequence reads the sensing sequence number of transparent electrode 3251, to obtain touching initial data (the touch raw of the touch detection panel 320
data).The touching initial data is two one-dimensional data at this time.
Fig. 4 is another schematic diagram of the system 300 with the detecting of stylus touch position of the present invention.Its difference with Fig. 3
It is different to be：Touch detection panel 320 in Fig. 4 includes a display screen 321 and a touch detection layer 327.The touch detection layer
327 have most (X-direction) and the transparent electrodes 3271 of second direction (Y direction) arrangement along the first direction.Transparent electricity
The pole block-like design in 3271 Xi Wei areas, can be rectangle or square.When performing capacitance touch detection, e.g. with self-capacitance
It touches in the embodiment that detecting obtains two-dimentional initial data, can be that driving and sensing function are performed both by transparent electrode 3271.Also
I.e. processing unit 330 sequentially can provide touch-control sensing signal (TX) to transparent electrode 3271, and sequentially read transparent electrode 32711
Sensing sequence number, to obtain the touching initial data of the touch detection panel 320 (touch raw data).That is, using certainly
The mode of capacitance detecting, the design of the multiple touching blocks of collocation individual layer, to obtain the initial data of two dimension.
Processing unit 330 is connected to the touch detection panel 320.The processing unit 330 receives the touch detection panel 320
Touching initial data.The processing unit 330 chooses a first area in the touching initial data, and is counted by the first area
It calculates and obtains one first detecting touch coordinate.The processing unit 330 chooses an at least second area in the touching initial data, and
It is calculated by an at least second area and obtains a helper data set.According to the first detecting touch coordinate and helper data set,
The processing unit 330 carries out one and calculates to obtain a practical touch coordinate.It is noted that in other embodiments, also may be used
To use silver nanowire as touch detection layer, and touching can be that active or passive type is used for matchmaker with touch panel interaction
It is situated between.Therefore, it is above-mentioned to be used for illustrating the scope being not intended to limit the invention in the embodiment of the present invention.
Fig. 5 is a kind of flow chart of stylus touch position method for detecting of the present invention.In step (A), the processing unit
330 use a capacitance touch detection, to obtain the touching initial data of the touch detection panel (touch raw data).The electricity
It can be mutual capacitance touch detection or self-capacitance touch detection to hold touch detection.
In step (B), a first area is chosen in the touching initial data, and calculates to obtain by the first area
One first detecting touch coordinate.
In step (C), an at least second area is chosen from the touching initial data, and by an at least second area
It calculates to obtain a helper data set.
In step (D), according to the first detecting touch coordinate and the helper data set, calculate and obtain practical touch seat
Mark.
The schematic diagram of initial data is touched when Fig. 6 is mutual capacitance touch detection of the present invention.As shown in fig. 6, Fig. 6 tops are one
The schematic diagram of three-dimensional space XYZ coordinate, Fig. 6 are the schematic diagram of a dual space XY coordinates below.The three-dimensional space XYZ coordinate can
The space being considered as where touch detection panel 320 and stylus 310, also can be considered the touching initial data institute of touch detection panel
The data space of formation.XY coordinates correspond to touch detection panel 320, and touch initial data and then can be considered the big of Z-direction
It is small.Wherein, P0 points are practical touch coordinate of the stylus 310 on touch detection panel 320.
When stylus 310 has inclination, stylus 310 forms an angle theta with Z axis, and on dual space XY coordinates, with
Y-axis shape has angle μ.The pen body of stylus 310 can make touch detection panel 320 generate capacitance variations.Therefore in step (B)
In, which chooses a first area 510 from the touching initial data, and original by the touching of first area 510
Data calculate the first detecting touch coordinate of stylus 310.The processing unit 330 calculates the touching original number of first area 510
According to center of gravity, with obtain first detecting touch coordinate (X1, Y1).As shown in fig. 6, the first detecting touch coordinate is in Fig. 6
P1 points.
And in step (C), which chooses an at least second area 520 from the touching initial data,
An at least second area 520 includes for one and more than the auxiliary area of the first area 510, which is auxiliary by this
Region is helped to calculate one second obtained detecting touch coordinate.
It is that the present invention is illustrated with the part of the touching initial data of an example of mutual capacitance touch detection please with reference to Fig. 7
Figure.In this example, the scope of first area 510 can be chosen for 3 × 3, and the scope of an at least second area 520 can be chosen for
7×7.That is, in the present example, which is a single area, and includes the first area 510.It should
Processing unit 330 calculates the helper data set according to the touching initial data of an at least second area 520.The helper data set meter
Calculate the center of gravity of an at least second area 520 (auxiliary area).That is, the processing unit 330 according to the auxiliary area calculate with
One second detecting touch coordinate (X2, Y2) is obtained, which is the center of gravity of the auxiliary area.Such as
Shown in Fig. 6, which is the P2 points in Fig. 6.
Fig. 8 is the schematic diagram that the present invention calculates practical touch coordinate.Reference Fig. 5 and Fig. 8 together, in step (D), according to
It is pre- by inquiry one according to the distance between the first detecting touch coordinate (X1, Y1) and the second detecting touch coordinate (X2, Y2)
The form first stored is touched to obtain one group of corresponding penalty coefficient (α, β), then by this group of penalty coefficient (α, β), first detecting
Touch coordinate (X1, Y1) and this second detecting touch coordinate (X2, Y2) come calculate the stylus 310 practical touch coordinate (X0,
Y0).The processing unit 330 is using the following formula to calculate practical touch coordinate (X0, Y0)：
X0=X1- α (X2-X1),
Y0=Y1- β (Y2-Y1),
Wherein α, β are this group of penalty coefficient.
Fig. 9 A, Fig. 9 B, Fig. 9 C are the schematic diagram that the present invention generates penalty coefficient.As shown in Figure 9 A, using a test
A robotic arm on platform clamps the stylus 310, prior to touching the touch detection panel 320 at A points with vertical mode, according to
The first detecting touch coordinate (X1, Y1) and the second detecting touch coordinate are calculated according to abovementioned steps (A), step (B) and step (C)
(X2, Y2).Then at shown in Fig. 9 B, which tilts a small angle theta 1 by the stylus 310, and with cant angle theta 1 at A points
Angular way touches the touch detection panel 320, and calculating the first detecting according to abovementioned steps (A), step (B) and step (C) touches
Touch coordinate (X1, Y1) and the second detecting touch coordinate (X2, Y2).Angle of inclination also such as front, is simply changed to θ 2 by Fig. 9 C.
The touch detection panel 320 is touched with different angle at A points, can obtain A points, angle of inclination, first detecting touch
Touch the related data of coordinate (X1, Y1) and the second detecting touch coordinate (X2, Y2).Again by the stylus 310 to the B by A points
Point carries out dependence test.Abovementioned steps are repeated, can finally obtain 320 every bit of touch detection panel, each angle of inclination, majority
The relevant test data of a first detecting touch coordinate (X1, Y1) and most the second detecting touch coordinates (X2, Y2).Accordingly may be used
Generate a form, note down the first detecting touch coordinate and second detecting the distance between the touch coordinate and penalty coefficient it
Between relation, and store in advance for subsequently using inquiry.Also can according to the first detecting touch coordinate (X1, Y1) and this
The distance between two detecting touch coordinates (X2, Y2), obtain one group of penalty coefficient (α, β) by tabling look-up, then are compensated by the group
Coefficient (α, β), the first detecting touch coordinate (X1, Y1) and the second detecting touch coordinate (X2, Y2) calculate the stylus
Practical touch coordinate (X0, Y0).
Relevant test data is in addition to it can generate form, also using curve matching (Curve Fitting) method, production
Between raw this group of penalty coefficient (α, β) and the first detecting touch coordinate (X1, Y1) and the second detecting touch coordinate (X2, Y2)
The function of distance.The processing unit 330 using the function, according to the first detecting touch coordinate (X1, Y1) and this second detect
Distance calculates this group of penalty coefficient (α, β) between surveying touch coordinate (X2, Y2).That is, the processing unit 330 can utilize function
Showing-that-momentum-turning, which is penetrated, obtains one group of penalty coefficient (α, β).Using tableaux method, need to by the form imprinting to read-only memory (ROM) or other
In non-volatile memory body, some hardware resources can be occupied.And utilize Han Shuo Showing-that-momentum-turning shooting methods, then it can save the hardware occupied by form
Resource.
Figure 10 is the present invention with the partial schematic diagram of the touching initial data of another example of mutual capacitance touch detection.At this
In a example, the scope of first area 510 can be chosen for 3 × 3, and an at least second area 520 is arround the first area 510
Four auxiliary areas 520-1,520-2,520-3 and 520-4.Four auxiliary areas 520-1,520-2,520-3 and the 520-4
Respectively positioned at the left side of the first area 510, the right, top and following.In the present example, four auxiliary area 520-1,
The scope of 520-2,520-3 and 520-4 are respectively 3 × 2,3 × 2,2 × 3 and 2 × 3.That is, in step (C), the processing list
Member 330 calculates the weights (weighting) of four auxiliary areas 520-1,520-2,520-3 and the 520-4, auxiliary to generate this
Help data group.Touching initial data in the range of auxiliary area 520-1 is added by the processing unit 330, to generate auxiliary area
The weights L of 520-1.As shown in Figure 10, the weights L of auxiliary area 520-1 is 45 (=6+8+7+11+7+6).Other auxiliary regions
The weights in domain are also to calculate according to this, and so it will not be repeated.
The processing unit 330 is in step (D), according to the first detecting touch coordinate (X1, Y1) and four auxiliary regions
The ratio of the weights of domain 520-1,520-2,520-3 and 520-4 obtains one group of penalty coefficient (α, β) by tabling look-up, then by this
The ratio of the weights of penalty coefficient (α, β), the first detecting touch coordinate (X1, Y1) and four auxiliary areas is organized to calculate this
The practical touch position (X0, Y0) of stylus 310.The processing unit 330 is using the following formula to calculate practical touch coordinate
(X0, Y0)：
X0=X1- α (L/R),
Y0=Y1- β (U/D),
Wherein α, β be this group of penalty coefficient, L be auxiliary area 520-1 weights, R be auxiliary area 520-2 weights, U
For the weights of auxiliary area 520-3, D is the weights of auxiliary area 520-4.
Figure 11 is the present invention with the partial schematic diagram of the touching initial data of an example of self-capacitance touch detection.Due to
The capacitance touch detection in this example is self-capacitance touch detection, therefore the touching initial data is two one-dimensional data.
In step (B), which touches initial data (touch raw by one one-dimensional first of a first direction (X)
Data) one of 101 and one second direction (Y) of region one-dimensional second touching original data region 102 is formed.In this example
In, the center of gravity of original data region 102 can be touched by the first touching original data region 101 and second is calculated respectively and generated
The first detecting X-axis coordinate value of touch coordinate and Y-axis coordinate value.Such as first touching original data region 101 center of gravity be
X1=(Xb × 35+Xa × 154+Xc × 106)/(35+154+106), as Xb=1, Xa=2, Xc=3, X1=2.241.The
The centers of gravity of two touching original data regions 102 for Y1=(Yb × 17+Ya × 127+Yc × 67)/(17+127+67), when Yb=1,
When Ya=2, Yc=3, Y1=2.237.Since the resolution ratio of touching is less than the resolution ratio of display, processing unit 330 can incite somebody to action
First detecting touch coordinate (2.241,2.237) is back to an application processor (not shown), and application processor can be according to touching
The ratio of resolution ratio and display resolution finds out corresponding display pixel or display pixel group, therefore the first detecting touching is sat
(2.241,2.237) are marked to be presented in the form of the value for having decimal.
Therefore in step (C), which touches initial data by one the one-dimensional 3rd of a first direction
One one-dimensional 4th touching original data region 104 of 103 and one second direction of region is formed.3rd touching initial data
Region 103 includes and more than the first touching original data region 101, and the 4th touching original data region 104 includes and greatly
In the second touching original data region 102.The helper data set is by the 3rd touching original data region 103 and the 4th
It touches original data region 104 and calculates one second obtained detecting touch coordinate (X2, Y2).The second detecting touch coordinate
(X2, Y2) can be considered that the 3rd touching original data region 103 and the 4th touches the center of gravity of original data region 104.
As shown in figure 11, the scope of the first touching original data region 101 can be chosen for 1 × 3, the second touching initial data
The scope in region 102 can be chosen for 3 × 1, and the scope of the 3rd touching original data region 103 can be chosen for 1 × 7, the 4th touching
The scope of original data region 104 can be chosen for 7 × 1.That is, in step (C), which calculates the 3rd touching
Original data region 103 and the 4th touches the center of gravity of original data region 104, is similar to previously described, and so it will not be repeated.
The processing unit 330 in step (D), according to this first detecting touch coordinate (X1, Y1) andIt shouldSecond detecting is touched
Touch coordinate (X2, Y2), one group of penalty coefficient (α, β) obtained with lookup table mode, then by this group of penalty coefficient (α, β), this first detects
Survey touch coordinate (X1, Y1) and this second detecting touch coordinate (X2, Y2) calculate the stylus 310 practical touch position (X0,
Y0).The processing unit 330 calculates practical touch coordinate (X0, Y0) using the following formula：
X0=X1- α (X2-X1),
Y0=Y1- β (Y2-Y1),
Wherein α, β are this group of penalty coefficient.
Figure 12 is the present invention with the partial schematic diagram of the touching initial data of another example of self-capacitance touch detection.At this
In a example, which touches initial data (touch raw data) region by one one-dimensional first of a first direction
101 and one one of second direction one-dimensional second touching original data region 102 formed.In this example, first detecting
The X-axis coordinate value and Y-axis coordinate value of touch coordinate can calculate the first touching original data region 101 respectively and the second touching is original
The center of gravity of data area 102 and generate.It is similar with the center of gravity calculation of Figure 11, and so it will not be repeated.
Therefore in step (C), an at least second area include the first direction two auxiliary areas and this second
Two auxiliary areas in direction.That is, an at least second area include this first touching original data region 101 the left side and
The top and following two auxiliary of two auxiliary areas 105,106 on the right and the second touching original data region 102
Region 107,108.
In this example, the scope of auxiliary area 105,106 is respectively 1 × 2, the scope difference of auxiliary area 107,108
For 2 × 1.That is, in step (C), which calculates the weights of four auxiliary areas 105,106,107,108
(weighting) ratio, to generate the helper data set.The processing unit 330 is original by the touching in the range of auxiliary area 105
Data are added, to generate the weights L of auxiliary area 105.As shown in figure 12, the weights L of the auxiliary area 105 is 4 (=1+3).
The weights of other auxiliary areas are also to calculate according to this, and so it will not be repeated.
Therefore, in step (D), the processing unit 330 is auxiliary according to the first detecting touch coordinate (X1, Y1) and this four
The ratio of the weights in region 105,106,107 and 108 is helped, one group of penalty coefficient (α, β) is obtained by tabling look-up, then is mended by the group
Repay the weights of coefficient (α, β), the first detecting touch coordinate (X1, Y1) and four auxiliary areas 105,106,107 and 108
Ratio calculates the practical touch position (X0, Y0) of the stylus.The processing unit 330 calculates actual touch using the following formula
Touch coordinate (X0, Y0)：
X0=X1- α (L/R),
Y0=Y1- β (U/D),
Wherein α, β are this group of penalty coefficient, and L is the ratio of the weights of auxiliary area 105, and R is the weights of auxiliary area 106
Ratio, U be auxiliary area 107 weights ratio, D be auxiliary area 108 weights ratio.
The stylus 310 that Figure 13 is the present invention has angle the schematic diagram of μ on XY coordinates with Y-axis shape.It is public according to triangle
Formula, processing unit 330 can calculate angle μ.As shown in figure 13, when the first detecting touch coordinate P1 points are detectd as origin, second
When survey touch coordinate P2 points are located at first quartile, angle μ is equal to μ ', and μ ' is equal to tan in the middle-1(Δ X/ Δ Y), Δ X=X2-X1,
Δ Y=Y2-Y1, wherein, (X1, Y1) is the first detecting touch coordinate, and (X2, Y2) is the second detecting touch coordinate.
When the first detecting touch coordinate P1 points are as origin, when the second detecting touch coordinate P2 points are located at the second quadrant, folder
Angle μ is equal to 360 ° of-μ '.When the first detecting touch coordinate P1 points are as origin, the second detecting touch coordinate P2 points positioned at the 3rd as
In limited time, angle μ is equal to 180 ° of+μ '.When the first detecting touch coordinate P1 points are as origin, the second detecting touch coordinate P2 points are located at
During fourth quadrant, angle μ is equal to 180 ° of-μ '.Angle μ is back to application processor (not shown) by processing unit 330, application
Processor can calculate the related datas such as the style of writing of stylus 310, strength size according to angle μ.
In previous example, the selection range of each area is non-for limiting the right of this case only as illustrating to use
Scope.The related technical personnel in the field according to the invention can disclose change, the selection range of each area.
From preceding description, the technology of the present invention is utilized the information beyond coordinate points, is computed repeatedly using different range
Coordinate can obtain offset.When stylus 310 is vertical state, then the first detecting touch coordinate P1, the second detecting is touched
Touch coordinate P2 points, 3 points of practical touch coordinate (X0, Y0) can overlap, the coordinate position calculated using different range there will not be
Difference.But if stylus 310 is inclined state, then different range calculates coordinate, can due to inclined degree difference.
The technology of the present invention utilizes this phenomenon, can correct coordinate shift during inclination, and can detecting inclination angle and inclined degree.Therefore this hair
Bright technology can solve the problem of the centre-of gravity shift of sensor signal produced by being tilted during practical application because of stylus 310, and can change
The use experience of kind user.
Above-described embodiment is illustrated only for facilitating explanation, and the interest field that the present invention is advocated should be with claim
Subject to described in book, not just the above examples.
Claims (11)
1. a kind of stylus touch position method for detecting, to detect practical touch of the stylus on a touch detection panel
Position, the method comprising the steps of：
(A) using a capacitance touch detection, to obtain the touching initial data of the touch detection panel；
(B) first area is chosen in the touching initial data, and is touched by first area calculating with obtaining one first detecting
Touch coordinate；
(C) choose an at least second area in the touching initial data, and calculated by an at least second area to obtain one
Helper data set；And
(D) according to the first detecting touch coordinate and the helper data set, calculate and obtain a practical touch coordinate.
2. stylus touch position method for detecting according to claim 1, wherein, in step (B), which touches
The center of gravity that coordinate is the first area is touched, in step (C), which includes for one and more than the first area
Auxiliary area, to calculate obtained one second detecting touch coordinate by the auxiliary area, this second is detectd the helper data set
Survey the center of gravity that touch coordinate is the auxiliary area.
3. stylus touch position method for detecting according to claim 2, wherein, in step (D), first detectd according to this
The distance between touch coordinate and the second detecting touch coordinate are surveyed, one group of penalty coefficient is obtained by tabling look-up, then by the group
Penalty coefficient, the first detecting touch coordinate and the second detecting touch coordinate calculate the practical touch coordinate of the stylus.
4. stylus touch position method for detecting according to claim 2, wherein, in step (D), first detectd according to this
The distance between touch coordinate and the second detecting touch coordinate are surveyed, Yi Han Shuo Showing-that-momentum-turning, which are penetrated, obtains one group of penalty coefficient, then by the group
Penalty coefficient, the first detecting touch coordinate and the second detecting touch coordinate calculate the practical touch coordinate of the stylus.
5. stylus touch position method for detecting according to claim 1, wherein, in step (B), which touches
The center of gravity that coordinate is the first area is touched, in step (C), an at least second area is auxiliary for four arround the first area
Help region.
6. stylus touch position method for detecting according to claim 5, wherein, in step (D), first detectd according to this
Survey the weights of touch coordinate and four auxiliary areas, by tabling look-up to obtain one group of penalty coefficient, then by this group of penalty coefficient,
The weighting ratio of the first detecting touch coordinate and four auxiliary areas calculates the practical touch position of the stylus.
7. stylus touch position method for detecting according to claim 1, wherein, in step (B), the first area by
One one-dimensional first touching original data region of first direction and an one-dimensional second touching initial data area of second direction
Domain is formed, and in step (C), which touches original data region by one the one-dimensional 3rd of first direction
And an one-dimensional 4th touching original data region of second direction is formed, which is original by the 3rd touching
Data area and the 4th touching original data region calculate one second obtained detecting touch coordinate.
8. stylus touch position method for detecting according to claim 7, wherein, in step (D), first detectd according to this
Survey touch coordinate and this second detecting touch coordinate, with lookup table mode obtain one group of penalty coefficient, then by this group of penalty coefficient, should
First detecting touch coordinate and the second practical touch position for detecting touch coordinate to calculate the stylus.
9. stylus touch position method for detecting according to claim 1, wherein, in step (A), the first area by
One one-dimensional first touching original data region of first direction and an one-dimensional second touching initial data area of second direction
Domain is formed, in step (C), an at least second area include the first direction two auxiliary areas and this second
Two auxiliary areas in direction.
10. stylus touch position method for detecting according to claim 9, wherein, in step (D), according to this first
Touch coordinate and the weighting ratio of four auxiliary areas are detected, one group of penalty coefficient is obtained with lookup table mode, then is mended by the group
The ratio for repaying coefficient, the first detecting touch coordinate and four auxiliary areas calculates the stylus practical touch position.
11. a kind of detecting system of stylus touch position, the detecting system include：
One stylus；
One touch detection panel；And
One processing unit, is connected to the touch detection panel, which receives the touching original number of the touch detection panel
According to；The processing unit chooses a first area in the touching initial data, and calculates acquisition one first by the first area and detect
Survey touch coordinate；The processing unit chooses an at least second area in the touching initial data, and by least one second area
Domain, which calculates, obtains a helper data set；And according to the first detecting touch coordinate and the helper data set, which carries out
One calculates to obtain a practical touch coordinate.
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