CN103853391B - A kind of method improving infrared touch panel touch precision - Google Patents
A kind of method improving infrared touch panel touch precision Download PDFInfo
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- CN103853391B CN103853391B CN201210515305.7A CN201210515305A CN103853391B CN 103853391 B CN103853391 B CN 103853391B CN 201210515305 A CN201210515305 A CN 201210515305A CN 103853391 B CN103853391 B CN 103853391B
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- lamp
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Abstract
The present invention relates to a kind of method improving infrared touch panel touch precision, by first lamp, end lamp and the distance on effective Petting Area border and the lamp spacing of infrared transmitting tube and number, obtain the size of effective Petting Area, the mapping proportionate relationship of the two obtained compared with effective Petting Area size by the size of viewing area again, is mapped to the touch point position coordinates in effective Petting Area in viewing area according to this mapping proportionate relationship；Further, owing to considering first lamp, end lamp and the distance on effective Petting Area border, when obtaining touch point position coordinates in effective Petting Area, it is possible to obtain result more accurately.When therefore using method of the present invention to be mapped to by coordinate position in effective Petting Area in viewing area, there is less coordinate offset, touch precision can be effectively improved.
Description
Technical field
The present invention relates to a kind of method improving infrared touch panel touch precision, belong to the touch point detection of infrared touch panel
Technical field.
Background technology
Infrared touch panel of the prior art, as it is shown in figure 1, be provided with infrared on the frame touching detection region surrounding
To pipe array, this infrared tube array includes infrared transmitting tube and infrared receiving tube one to one, and at a time only
Have infrared transmitting tube to launch scanning ray, thus the most corresponding receive that pipe can only receive on a direction red
UV light, when when touching detection Nei You touch point, region, the infrared light between infrared transmitting tube and infrared receiving tube is touched
Point stops, i.e. can determine that the positional information of touch point according to the positional information of the infrared receiving tube that can not receive Infrared.
In infrared touch panel research and development and test phase, the effective touch often varied in size in the viewing area with display
In district, touch screen is tested；And in the actual application of infrared touch panel, also can there is effective Petting Area and display
The situation that the viewing area of device varies in size.By touching on effective Petting Area of touch screen, in the display of display
The touch point that the display of corresponding position, region is corresponding.Effective Petting Area and the viewing area size of display due to touch screen
Difference, so needing to be mapped on the coordinate in the viewing area of display the touch point coordinate on effective Petting Area, to protect
Card test result is accurately and reliably.In order to realize above-mentioned mapping proportionate relationship, in prior art, touch screen is horizontal and vertical
The district that first lamp (first infrared transmitting tube/infrared receiving tube), end lamp (last infrared transmitting tube/infrared receiving tube) determine
Mapping between territory and viewing area, method is as follows:
(1) touch point position coordinates (X, Y) in effective Petting Area is determined:
As it is shown in figure 1, the quantity setting transversely infrared transmitting tube and infrared receiving tube is H_Num, in longitudinal direction infrared
The quantity penetrating pipe and infrared receiving tube is V_Num, and the lamp spacing between adjacent two infrared transmitting tube/infrared receiving tubes is
Interv, on the basis of the horizontal frame of installation infrared transmitting tube, be followed successively by the infrared transmitting tube being arranged on longitudinal frame and
Infrared receiving tube arranges sequence number VN(0 < VN≤ V_Num, and be integer)；In like manner, with longitudinal frame of installation infrared transmitting tube as base
Standard, is followed successively by the infrared transmitting tube being arranged on horizontal frame and infrared receiving tube arranges sequence number HN(0 < HN≤ H_Num, and be whole
Number)；The sequence number of each infrared transmitting tube/infrared receiving tube is stored.Within a scan period, control each successively
Infrared transmitting tube is launched Infrared (scan line) and is scanned touching detection region, after each scan period terminates, and root
According to the horizontal infrared transmitting tube sequence number corresponding to the Infrared that touched point is blocked or infrared receiving tube sequence number HNWith the reddest
Emission pipe sequence number or infrared receiving tube sequence number VN, and the position coordinates that lamp distance computation touch point is in effective Petting Area
(X, Y):
X=Interv*(HN-1)、Y=Interv*(VN-1)；
(2) mapping proportionate relationship is determined:
The area size determined according to first lamp horizontal and vertical in effective Petting Area, end lamp is ([Interv* (H_
Num-1)], [Interv* (V_Num-1)]).For viewing area, can be obtained it by the way of measurement horizontal
To a length of W, longitudinal length is H, then the size of viewing area is (W, H).The mapping ratio of the two is determined according to below equation
Relation is:
Rx= W/[Interv*(H_Num - 1)；Ry= H/ Interv*(V_Num - 1)。
According to above-mentioned mapping proportionate relationship (Rx, Ry) in viewing area, determine the position coordinates of touch point: X '=X* Rx,
Y’ =Y*Ry。
Obviously, above-mentioned mapping method is by district determined by between first lamp horizontal and vertical in effective Petting Area and end lamp
What territory was proportional is mapped to viewing area, is directly by institute between horizontal and vertical first lamp and end lamp really the most in the prior art
Fixed region is as effective Petting Area.But in the preparation process of infrared touch panel, due to user's need to display sizes
Ask different, the infrared transmitting tube that frame is installed and infrared receiving tube, first lamp, between end lamp and frame, it is not necessarily coincidence,
Often there is a certain distance, and be arranged at the infrared transmitting tube on laterally/longitudinal frame and infrared receiving tube be all with
The geometric center of laterally/longitudinal frame is that axis of symmetry is symmetrically arranged, the most laterally/the most first lamp, between end lamp and frame
Apart from identical.If the distance between the most first lamp, end lamp and effective Petting Area border is xoffset, the most first lamp, end lamp touch with effective
Touching the distance between border, district is yoffset.Due to xoffsetAnd yoffsetExistence, region and reality determined by between first lamp and end lamp
The effective Petting Area in border also differs, and the mapping relations obtained exist error.And, said method step (1) is determining touch point
During position coordinates in effective Petting Area, be the most only consider the infrared transmitting tube of distance frame or the sequence number of infrared receiving tube and
Lamp spacing, does not but account for closing between the actual boundary of infrared transmitting tube or the physical location of infrared receiving tube and effective Petting Area
System, and then cause the touch point obtained position coordinates in effective Petting Area to have bigger deviation.
In sum, in prior art when effective Petting Area is mapped to viewing area, it maps proportionate relationship not
Accurately, and also have relatively large deviation when determining the position coordinates of touch point.According to this mapping proportionate relationship and position, touch point
Putting coordinate, the result being mapped in viewing area can produce bigger skew (i.e. coordinate expansion or contraction), causes when user wants
When touching a certain position in viewing area, but there is certain deviation amount the actual position touched on effective Petting Area, from
And cause the maloperation to infrared touch panel, the mistaken touch even situation of no touch occur, makes the touch precision of infrared touch panel
Reduce.
Summary of the invention
To be solved by this invention is directly to be arrived by the area maps between lamp first in effective Petting Area, end lamp in prior art
Viewing area produces relatively large deviation, the problem causing mistaken touch, no touch, and then provides a kind of by the seat in effective Petting Area
Mark considers in being mapped to viewing area that first lamp, end lamp touch precision with the infrared touch panel that can improve of the spacing of frame constantly
Method.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of method improving infrared touch panel touch precision, comprises the steps:
S1: obtain the lateral length W of effective Petting AreahWith longitudinal length Wv；
Obtain distance x between infrared touch panel laterally first lamp, end lamp and effective Petting Area borderoffset, the most first lamp, end
Distance y between lamp and effectively Petting Area borderoffset, and lamp spacing Interv；
Obtain the lateral length W and longitudinal length H of viewing area；
S2: according to the mapping proportionate relationship of the below equation effective Petting Area of calculating with viewing area:
Rx= W/Wh; Ry=H/Wv；
S3: obtain the horizontal infrared transmitting tube sequence number or red corresponding to the Infrared that touch point is blocked at effective Petting Area
External closed tube sequence number HNWith longitudinal infrared transmitting tube sequence number or infrared receiving tube sequence number VN, calculate touch point according to below equation and exist
The effectively position coordinates (X, Y) in Petting Area:
X=xoffset+Interv*(HN-1)、Y=yoffset+Interv*(VN-1)；
S4: described touch point position coordinates (X, Y) in effective Petting Area is mapped according to described mapping proportionate relationship
To viewing area, obtain touch point coordinate in viewing area (X ', Y ') by below equation:
X’=RX* X=(W/Wh) * (xoffset+Interv*(HN-1))；
Y’=RY* Y=(H/Wv) * (yoffset+Interv*(VN-1))。
In described step S1, obtained the lateral length W of effective Petting Area by the method for tape measurehWith longitudinal length Wv。
In described step S1:
Effective Petting Area is obtained according to horizontal infrared transmitting tube or quantity H_Num of infrared receiving tube and lamp spacing Interv
Lateral length Wh=2*xoffset+Interv*(H_Num-1)；
Effective Petting Area is obtained according to longitudinal infrared transmitting tube or quantity V_Num of infrared receiving tube and lamp spacing Interv
Longitudinal length Wv=2* yoffset+ Interv*( V_Num - 1 )。
In described step S1, obtained the lateral length W and longitudinal length H of viewing area by the method for tape measure.
When horizontal and vertical first lamp and end lamp are positioned at the border of effective Petting Area, xoffsetAnd yoffsetJust take；
When horizontal and vertical first lamp and end lamp are positioned at outside the border of effective Petting Area, xoffsetAnd yoffsetTake negative.
The technique scheme of the present invention has the advantage that compared to existing technology
(1) method that raising infrared touch panel of the present invention touches precision, obtains the lateral length of effective Petting Area
WhWith longitudinal length Wv, and the lateral length W and longitudinal length H of viewing area, according to the actual size of effective Petting Area with aobvious
Show that the actual size in region is mapped proportionate relationship more accurately；Further, touch point seat in effective Petting Area is being obtained
Timestamp, in the horizontal infrared transmitting tube sequence number considered corresponding to the Infrared that effective Petting Area blocks or infrared receiving tube sequence number
HNWith longitudinal infrared transmitting tube sequence number or infrared receiving tube sequence number VNOutside, it is also contemplated that first lamp, end lamp and effective Petting Area border it
Between distance, the result obtained is more accurate；Therefore basis mapping proportionate relationship more accurately and more accurately touch point coordinate letter
Breath, when being mapped to touch point in viewing area, has less coordinate offset, can be effectively improved touch precision.
(2) method that raising infrared touch panel of the present invention touches precision, by first lamp, end lamp and effective Petting Area
The distance on border and the lamp spacing of infrared transmitting tube and number, obtain the actual size of effective Petting Area, then with viewing area
The between the two actual mapping proportionate relationship that size obtains compared with effective Petting Area size.
(3) method that raising infrared touch panel of the present invention touches precision, considers first, last infrared tube effectively
Situation outside in Petting Area border and effective Petting Area border, it is adaptable to all situations of infrared touch panel, and calculating is simple,
Accuracy is high.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below in conjunction with the accompanying drawings, the present invention is made the most in detail
Thin explanation, wherein,
Fig. 1 is that first lamp of the present invention is positioned at the position relationship schematic diagram within effective Petting Area border with end lamp；
Fig. 2 is that effective Petting Area internal coordinate of the present invention is mapped to viewing area internal coordinate schematic diagram；
Fig. 3 is that first lamp of the present invention is positioned at the position relationship schematic diagram outside effective Petting Area border with end lamp.
In figure, reference is expressed as: 1-effective Petting Area border, 2-viewing area, 3-infrared transmitting tube, 4-is infrared to be connect
Closed tube.
Detailed description of the invention
Embodiment 1
The present embodiment provides a kind of and improves the method that infrared touch panel touches precision, comprises the steps:
S1: obtain the lateral length W of effective Petting AreahWith longitudinal length Wv, obtain the size (W of effective Petting Areah, Wv)；
Further, as it is shown in figure 1, obtain infrared touch panel laterally first lamp, end lamp and effective distance between Petting Area horizontal boundary
xoffset, longitudinally distance y between head lamp, end lamp and effective Petting Area borderoffset, and lamp spacing Interv；
Obtain the lateral length W and longitudinal length H of viewing area 2, obtain the region (W, H) of viewing area 2；
S2: according to the mapping proportionate relationship of the below equation effective Petting Area of calculating with viewing area:
Rx= W/Wh; Ry= H/ Wv；
S3: obtain the horizontal infrared transmitting tube sequence number or red corresponding to the Infrared that touch point is blocked at effective Petting Area
External closed tube sequence number HNWith longitudinal infrared transmitting tube sequence number or infrared receiving tube sequence number VN, calculate touch point according to below equation and exist
The effectively position coordinates (X, Y) in Petting Area:
X=xoffset+Interv*(HN-1)、Y=yoffset+Interv*(VN-1)；
S4: as in figure 2 it is shown, according to described mapping proportionate relationship by described touch point position coordinates in effective Petting Area
(X, Y) is mapped to viewing area, obtains touch point coordinate in viewing area (X ', Y ') by below equation:
X’=RX* X=(W/Wh) * (xoffset+Interv*(HN-1))；
Y’=RY* Y=(H/Wv) * (yoffset+Interv*(VN-1))。
According to above-mentioned formula, it is known that if effectively Petting Area is identical with the size of viewing area 2: RX=1, Ry=1, then may be used
With the coordinate in viewing area 2 after obtaining coordinate (X, Y) in effective Petting Area and having mapped for (X ', Y ') coincidence.Root
According to above-mentioned formula, if the infrared transmitting tube serial number (1,1) that the Infrared blocked of touch point is corresponding is (the most horizontal and vertical all
Headed by lamp) time, it is known that for (x when it is mapped in viewing area 2offset, yoffset).
Clearly as the distance considered between first lamp, end lamp and effective Petting Area border 1, use the side in the present embodiment
Method, it is possible to obtain accurate touch point position coordinates and map proportionate relationship, position, touch point in effective Petting Area is sat
Mark also is able to avoid the skew of coordinate after being mapped to viewing area 2, greatly enhance touch precision.
Embodiment 2
The present embodiment, as the further restriction of embodiment 1, in wherein said step S1, is obtained by the method for tape measure
Take the lateral length W of effective Petting AreahWith longitudinal length Wv；And, the horizontal stroke of viewing area 2 is obtained by the method for tape measure
To length W and longitudinal length H.Usually, effective Petting Area of touch screen is exactly touch screen frame area defined, so,
The lateral length of measurement touch screen frame area defined and longitudinal length can be obtained by the lateral length of effective Petting Area
WhWith longitudinal length Wv。
Embodiment 3
The present embodiment improvement further on the basis of embodiment 2 is as follows:
In conjunction with Fig. 1, it is known that in described step S1:
Effective Petting Area is obtained according to horizontal infrared transmitting tube or quantity H_Num of infrared receiving tube and lamp spacing Interv
Lateral length Wh=2*xoffset+Interv*(H_Num-1)；According to longitudinal infrared transmitting tube or quantity V_ of infrared receiving tube
Num and lamp spacing Interv obtain the longitudinal length W of effective Petting Areav=2* yoffset+ Interv*( V_Num - 1 )。
When the overlapping margins of first lamp and end lamp and effective Petting Area, xoffset=yoffset=0。
The first lamp that the present embodiment is given and end lamp are all the situations in effective Petting Area border 1, but it is also possible that out
Existing first lamp or end lamp situation outside effective Petting Area border 1, the most first lamp and end lamp are all effectively touching as shown in Figure 3
Situation outside border, district 1.When horizontal and vertical first lamp and end lamp are positioned at effective Petting Area border 1, xoffsetAnd yoffset
Just take；Horizontal and vertical first lamp and end lamp be positioned at effective Petting Area border 1 outer time, xoffsetAnd yoffsetTake negative.The most permissible
The said method enabling the present invention is applicable to various infrared touch panel.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (3)
1. one kind is improved the method that infrared touch panel touches precision, it is characterised in that comprise the steps:
S1: obtain the lateral length W of effective Petting AreahWith longitudinal length Wv；
Obtain distance x between infrared touch panel laterally first lamp, end lamp and effective Petting Area borderoffset, longitudinally first lamp, end lamp with
Effectively distance y between Petting Area borderoffset, and lamp spacing Interv；
Obtain the lateral length W and longitudinal length H of viewing area；
S2: according to the mapping proportionate relationship of the below equation effective Petting Area of calculating with viewing area:
Rx=W/Wh；Ry=H/Wv；
S3: obtain the horizontal infrared transmitting tube sequence number corresponding to the Infrared that touch point is blocked at effective Petting Area or infrared connect
Closed tube sequence number HNWith longitudinal infrared transmitting tube sequence number or infrared receiving tube sequence number VN, calculate touch point effectively according to below equation
Position coordinates (X, Y) in Petting Area:
X=xoffset+Interv*(HN-1), Y=yoffset+Interv*(VN-1)；
S4: described touch point position coordinates (X, Y) in effective Petting Area is mapped to aobvious according to described mapping proportionate relationship
Show region, obtain touch point coordinate in viewing area (X ', Y ') by below equation:
X '=RX* X=(W/Wh)*(xoffset+Interv*(HN-1))；
Y '=RY* Y=(H/Wv)*(yoffset+Interv*(VN-1))；
In described step S1:
The horizontal stroke of effective Petting Area is obtained according to horizontal infrared transmitting tube or quantity H_Num of infrared receiving tube and lamp spacing Interv
To length Wh=2*xoffset+Interv*(H_Num-1)；
The vertical of effective Petting Area is obtained according to longitudinal infrared transmitting tube or quantity V_Num of infrared receiving tube and lamp spacing Interv
To length Wv=2*yoffset+Interv*(V_Num-1)。
2. according to the arbitrary described method improving infrared touch panel touch precision of claim 1, it is characterised in that:
In described step S1, obtained the lateral length W and longitudinal length H of viewing area by the method for tape measure.
3. according to the arbitrary described method improving infrared touch panel touch precision of claim 1, it is characterised in that:
When horizontal and vertical first lamp and end lamp are positioned at the border of effective Petting Area, xoffsetAnd yoffsetJust take；
When horizontal and vertical first lamp and end lamp are positioned at outside the border of effective Petting Area, xoffsetAnd yoffsetTake negative.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210515305.7A CN103853391B (en) | 2012-12-05 | 2012-12-05 | A kind of method improving infrared touch panel touch precision |
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| CN201210515305.7A CN103853391B (en) | 2012-12-05 | 2012-12-05 | A kind of method improving infrared touch panel touch precision |
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| CN103853391B true CN103853391B (en) | 2016-12-21 |
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| CN108415655B (en) * | 2018-02-08 | 2020-10-23 | 广州华欣电子科技有限公司 | Touch data processing method and device, all-in-one machine and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433557A (en) * | 1999-12-02 | 2003-07-30 | 伊罗接触系统公司 | Apparatus and method to improve resolution of infrared touch systems |
| CN101320307A (en) * | 2007-06-04 | 2008-12-10 | 北京汇冠新技术有限公司 | Method for recognizing multiple touch points on infrared touch screen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012017698A1 (en) * | 2010-08-06 | 2012-02-09 | 株式会社 翔栄 | Input device using touch panel and input method thereof |
| US8786577B2 (en) * | 2010-11-03 | 2014-07-22 | Toshiba Tec Kabushiki Kaisha | Apparatus and method for recognizing coordinates |
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2012
- 2012-12-05 CN CN201210515305.7A patent/CN103853391B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433557A (en) * | 1999-12-02 | 2003-07-30 | 伊罗接触系统公司 | Apparatus and method to improve resolution of infrared touch systems |
| CN101320307A (en) * | 2007-06-04 | 2008-12-10 | 北京汇冠新技术有限公司 | Method for recognizing multiple touch points on infrared touch screen |
Non-Patent Citations (1)
| Title |
|---|
| 红外线感应电子白板的设计与实现;董冠涛;《中国优秀硕士学位论文全文数据库 信息科技辑（月刊）》;20090915;第2009年卷(第09期);第I137-15页，第2.1节 * |
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