CN102880357B - Touch control device coordinate calibration method and device - Google Patents
Touch control device coordinate calibration method and device Download PDFInfo
- Publication number
- CN102880357B CN102880357B CN201210353191.0A CN201210353191A CN102880357B CN 102880357 B CN102880357 B CN 102880357B CN 201210353191 A CN201210353191 A CN 201210353191A CN 102880357 B CN102880357 B CN 102880357B
- Authority
- CN
- China
- Prior art keywords
- control device
- touch control
- calibrated
- coordinate
- response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The invention provides a kind of touch control device coordinate calibration method and device, the method comprises the following steps: in the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that described standard has calibrated touch control device, and edge close alignment; Judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent; The each response coordinate then having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard if not calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated; If then calibrate end.Method of the present invention and device have higher adaptability, have good market application foreground.
Description
Technical field
The present invention relates to touch-control field, particularly relate to a kind of touch control device coordinate calibration method and a kind of touch control device calibrating coordinates device.
Background technology
Generally, touch control device need be installed on display device, and to realize man-machine interaction, and the position that this man-machine interaction often needs user to touch is consistent with the response position shown.In order to reach above-mentioned effect, therefore needing a calibrating coordinates process, touch control device is mated with display device.
At present, the coordinate calibration method of traditional touch control device, comprise the steps: to fix several presets of display first on the display device, user touches the position of these points on touch control device, calibration parameter is calculated by known display point coordinate and actual touch point coordinate, by the deviation of calibration parameter correction touch apparatus, thus realize mating of touch control device and display device.
By researching and analysing rear discovery to above-mentioned traditional touch control device coordinate calibration method, there is following two problems in the method:
One, because display point is default in traditional touch control device coordinate calibration method, namely position is fixing, when showing situation about putting just in this failed areas when occurring touch control device to there is regional area inefficacy, then will touch control device be directly caused to calibrate;
Two, because user needs response position that to click according to the point that display device shows on touch control device, this process certainly exists a certain amount of personal error, namely actual touch position often can not reach with display position and overlap completely, and this error will participate in the calculating of calibration parameter, thus final calibration result is caused to there is deviation.
Summary of the invention
Based on this, be necessary cannot carry out calibrating or calibration result exists the problem of deviation for above-mentioned, a kind of touch control device coordinate calibration method and device are provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of touch control device coordinate calibration method, comprises the following steps:
In the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that described standard has calibrated touch control device, and edge close alignment;
Judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent;
If not, then each response coordinate having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated;
If so, then end is calibrated.
A kind of touch control device calibrating coordinates device, comprising:
Response coordinate obtaining module, for in the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that described standard has calibrated touch control device, and edge close alignment;
Judge module, for judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent;
Calibration parameter computing module, if each response coordinate and described standard for described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate inconsistent, the each response coordinate then having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated;
Terminate module, if for each response coordinate and the described standard of described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate consistent, then calibrate end.
As can be seen from above scheme, touch control device coordinate calibration method of the present invention and device, touch control device to be calibrated, standard are calibrated touch control device overlap to place, because the two is overlapping and edge close alignment, therefore can calibrate touch control device to standard to the touch of touch control device to be calibrated to come into force simultaneously, and the physical location come into force is consistent, namely a touch operation can have been calibrated touch control device to touch control device to be calibrated and standard and produced identical response coordinate.The present invention is just according to this principle, use standard has been calibrated touch control device and has been come as a reference to calibrate touch control device to be calibrated, because the present invention does not adopt fixing calibration point, therefore effectively prevent the lost efficacy touch control device that causes of regional area and cannot carry out the problem of calibration operation; And the present invention uses the calibration point of closed loop, because this eliminating the impact of the personal error in handled journey on calibration result, ensure that the accuracy of final calibration result.Method of the present invention and device have higher adaptability, have good market application foreground.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of touch control device coordinate calibration method of the present invention;
Fig. 2 is calibrating coordinates process example figure;
Fig. 3 is the structural representation of a kind of touch control device calibrating coordinates of the present invention device.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is further described.
Shown in Figure 1, a kind of touch control device coordinate calibration method, comprises the following steps:
Step S101, in the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device.
Above-mentioned touch control device to be calibrated, is the touch control device needing to carry out calibrating, i.e. handling object of the present invention; Above-mentioned standard calibrates touch control device, is through the standard touch control device of calibration, and complete bias free, in fact requires that its deviate is less than preset requirement value in theory.
As a good embodiment, a calibration jig in the present invention, can be adopted to be assemblied on platform by touch control device to be calibrated, and standard calibrated touch control device and be fixed on touch control device to be calibrated.It should be noted that, described standard has calibrated touch control device need be completely overlapping with touch control device to be calibrated, and edge close alignment.Overlapping just because of the two and edge is close alignment, therefore can calibrate touch control device to standard to the touch of touch control device to be calibrated to come into force simultaneously, and the physical location come into force is consistent, namely a touch operation can have been calibrated touch control device to touch control device to be calibrated and standard and produced identical response coordinate.Concrete, how to make once to touch but two touch control devices responded simultaneously, having following touch control device to realize:
One, optical imaging type touches frame, and this touch control device uses camera shooting Infrared to be principle, does not need the barriers such as glass, and therefore finger can touch the response district of frame through two optical imaging types, realizes responding simultaneously;
Two, infrared tube formula touches frame, and this touch control device uses infrared tube transmitting-receiving Infrared to be principle, does not need the barriers such as glass, and therefore finger can touch the response district of frame through two optical imaging types, realizes responding simultaneously;
Three, laser type touches frame, and this touch control device uses camera shooting to be principle by the laser reflected, and does not need the barriers such as glass, and therefore finger can touch the response district of frame through two optical imaging types, realizes responding simultaneously.
Touch control device to be calibrated, standard are calibrated touch control device be fixed on calibration jig, and after powering on and entering duty, namely controlled touch control device to be calibrated, standard by predetermined manner and calibrated touch control device and enter calibration mode.Above-mentioned predetermined manner can be:
A) using the main control systems such as PC, carrying out communication by having calibrated touch control device with touch control device to be calibrated, standard, to enter calibration mode;
B) by the physical hardware devices such as button, switch, trigger and enter calibration mode.
User touches touch control device to be calibrated, and touch location can be any, but number needs wants two or more.As a good embodiment, described detect there is the touch operation of more than twice in touch control device to be calibrated after, obtain response coordinate before, can also comprise the steps:
Judge in the touch operation of described more than twice, whether the X-coordinate corresponding to each calibration touch point is all not identical with Y-coordinate;
If not, as long as the X-coordinate namely corresponding to each calibration touch point has any one identical, as long as or Y-coordinate corresponding to each calibration touch point have any one identical, then illustrate that now can not enter follow-up calibrating coordinates calculates, now can only proceed to detect, until satisfy condition;
If, namely the X-coordinate corresponding to each calibration touch point and Y-coordinate are all not identical, then illustrate and can enter follow-up calculating, now enter the step (namely obtaining each response coordinate that each response coordinate of touch control device to be calibrated and standard have calibrated touch control device) obtaining response coordinate.
As a good embodiment, the process that each response coordinate of described acquisition touch control device to be calibrated, standard have calibrated each response coordinate of touch control device can adopt following several mode any one realize:
A) PC main control system is used, by each response coordinate that communication obtains each response coordinate of described touch control device to be calibrated, standard has calibrated touch control device;
B) described touch control device record to be calibrated self respectively responds coordinate, and obtains by communication each response coordinate that described standard has calibrated touch control device;
C) described standard has been calibrated touch control device record and self has respectively been responded coordinate, and obtains each response coordinate of described touch control device to be calibrated by communication.
Step S102, judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent; Then enter step S103 if not; If then enter step S104.
Step S103, if not (each response coordinate and the described standard of even described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate inconsistent), the each response coordinate then having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, described calibration parameter is saved in described touch control device to be calibrated, then in actual use, just calibrating coordinates can be carried out to described touch control device to be calibrated according to this calibration parameter.
In two kinds of situation, a kind of be the situation only having two calibration touch point to concrete calibration calculations, and another kind is the situation of more than three calibration touch point, is described respectively below:
(1) situation of two calibration touch point, is only had.Shown in Figure 2, suppose there are four points: p1 (x1, y1), p2 (x2, y2), p3 (x3, y3), p4 (x4, y4), wherein p1, p2 are the response coordinate on touch control device to be calibrated, and p3, p4 are the response coordinate that standard has calibrated touch control device.Then we can adopt preset algorithm to calculate calibration parameter A, B, C, D, E, F:
A＝(x4-x3)/(x2-x1)；
B＝x1；
C＝x3；
D＝(y4-y3)/(y2-y1)；
E＝y1；
F＝y3；
Calibration process in use procedure:
xo＝(xi-B)*A+C；
yo＝(yi-E)*D+F；
Wherein, xi, yi are the touch-responsive coordinate of (before calibration process) in use procedure; Xo, yo are the output coordinate of (after calibration process) after use procedure;
(2) situation, more than three points (comprising three points).Calibrated the response coordinate of touch control device according to standard, to each response coordinate find one with it another response coordinate nearest as a calibration group.The response coordinate of touch control device to be calibrated, also adds corresponding calibration group according to the grouping situation that standard has calibrated touch control device.For each calibration group, calculate calibration parameter An, Bn, Cn, Dn, En, Fn according to the algorithm in above-mentioned ().In actual use, find the calibration group nearest with actual touch point, according to the calibration parameter of this calibration group, by the preset algorithm in () and adjustable touch point.
Step S104, (if each response coordinate and the described standard of even described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate consistent), owing to touching for same calibration, if both response coordinates are consistent, then illustrate that touch control device to be calibrated is accurate, without the need to adjustment, then calibrate end.
In addition, corresponding with above-mentioned a kind of touch control device coordinate calibration method, the present invention also provides a kind of touch control device calibrating coordinates device, as shown in Figure 3, comprising:
Response coordinate obtaining module 101, for in the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that described standard has calibrated touch control device, and edge close alignment;
Judge module 102, for judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent;
Calibration parameter computing module 103, if each response coordinate and described standard for described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate inconsistent, the each response coordinate then having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated;
Terminate module 104, if for each response coordinate and the described standard of described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate consistent, then calibrate end.
As a good embodiment, touch control device calibrating coordinates device of the present invention can also comprise as lower module:
Coordinate judge module, for described detect there is the touch operation of more than twice in touch control device to be calibrated after, obtain response coordinate before, judge in the touch operation of described more than twice, whether the X-coordinate corresponding to each calibration touch point is all not identical with Y-coordinate;
First execution module, if identical with there being any one in Y-coordinate for the X-coordinate corresponding to each calibration touch point, then illustrates that now can not enter follow-up calibrating coordinates calculates, and now can only proceed to detect, until satisfy condition;
Second execution module, if all not identical with Y-coordinate for the X-coordinate corresponding to each calibration touch point, then illustrate and can enter follow-up calculating, now can notify that described response coordinate obtaining module 101 enters the step obtaining response coordinate.
Other technical characteristic of touch control device calibrating coordinates device of the present invention is identical with above-mentioned a kind of touch control device coordinate calibration method, and it will not go into details herein.
Can be found out by above scheme, touch control device coordinate calibration method of the present invention and device, touch control device to be calibrated, standard are calibrated touch control device overlap to place, because the two is overlapping and edge close alignment, therefore can calibrate touch control device to standard to the touch of touch control device to be calibrated to come into force simultaneously, and the physical location come into force is consistent, namely a touch operation can have been calibrated touch control device to touch control device to be calibrated and standard and produced identical response coordinate.The present invention is just according to this principle, use standard has been calibrated touch control device and has been come as a reference to calibrate touch control device to be calibrated, because the present invention does not adopt fixing calibration point, therefore effectively prevent the lost efficacy touch control device that causes of regional area and cannot carry out the problem of calibration operation; And the present invention uses the calibration point of closed loop, because this eliminating the impact of the personal error in handled journey on calibration result, ensure that the accuracy of final calibration result.Method of the present invention and device have very high adaptability, have good market application foreground.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a touch control device coordinate calibration method, is characterized in that, comprises the following steps:
In the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that standard has calibrated touch control device, and edge close alignment;
Judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent;
If not, then each response coordinate having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated;
If so, then end is calibrated.
2. touch control device coordinate calibration method according to claim 1, it is characterized in that, described detect there is the touch operation of more than twice in touch control device to be calibrated after, obtain before each response coordinate of touch control device to be calibrated and standard calibrated each response coordinate of touch control device, also comprise step:
Judge in the touch operation of described more than twice, whether the X-coordinate corresponding to each calibration touch point is all not identical with Y-coordinate; Wherein, described calibration touch point is the position touching touch control device to be calibrated in touch operation;
If not, then proceed to detect;
If so, the step obtaining response coordinate is then entered.
3. touch control device coordinate calibration method according to claim 1 and 2, it is characterized in that, the process that each response coordinate of described acquisition touch control device to be calibrated, the standard be fixed on described touch control device to be calibrated have calibrated each response coordinate of touch control device specifically comprises: use PC main control system, by each response coordinate that communication obtains each response coordinate of described touch control device to be calibrated, standard has calibrated touch control device.
4. touch control device coordinate calibration method according to claim 1 and 2, it is characterized in that, the process that each response coordinate of described acquisition touch control device to be calibrated, the standard be fixed on described touch control device to be calibrated have calibrated each response coordinate of touch control device specifically comprises: described touch control device record to be calibrated self respectively responds coordinate, and obtains by communication each response coordinate that described standard has calibrated touch control device.
5. touch control device coordinate calibration method according to claim 1 and 2, it is characterized in that, the process that each response coordinate of described acquisition touch control device to be calibrated, the standard be fixed on described touch control device to be calibrated have calibrated each response coordinate of touch control device specifically comprises: described standard has been calibrated touch control device record and self respectively responded coordinate, and obtains each response coordinate of described touch control device to be calibrated by communication.
6. a touch control device calibrating coordinates device, is characterized in that, comprising:
Response coordinate obtaining module, for in the calibration mode, when detect touch control device to be calibrated exists the touch operation of more than twice time, obtain each response coordinate of described touch control device to be calibrated, each response coordinate that the standard be fixed on described touch control device to be calibrated has calibrated touch control device; It is overlapping with touch control device to be calibrated that standard has calibrated touch control device, and edge close alignment;
Judge module, for judge that each response coordinate of described touch control device to be calibrated and described standard have calibrated touch control device whether corresponding to respond coordinate consistent;
Calibration parameter computing module, if each response coordinate and described standard for described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate inconsistent, the each response coordinate then having calibrated touch control device according to each response coordinate of described touch control device to be calibrated, described standard calculates calibration parameter, and carries out calibrating coordinates according to this calibration parameter to described touch control device to be calibrated;
Terminate module, if for each response coordinate and the described standard of described touch control device to be calibrated calibrated touch control device corresponding to respond coordinate consistent, then calibrate end.
7. touch control device calibrating coordinates device according to claim 6, is characterized in that, also comprise:
Coordinate judge module, for described detect there is the touch operation of more than twice in touch control device to be calibrated after, obtain before each response coordinate of touch control device to be calibrated and standard calibrated each response coordinate of touch control device, judge in the touch operation of described more than twice, whether the X-coordinate corresponding to each calibration touch point is all not identical with Y-coordinate; Wherein, described calibration touch point is the position touching touch control device to be calibrated in touch operation;
First execution module, if identical with there being any one in Y-coordinate for the X-coordinate corresponding to each calibration touch point, then proceeds to detect;
Second execution module, if all not identical with Y-coordinate for the X-coordinate corresponding to each calibration touch point, then notifies that described response coordinate obtaining module enters the step obtaining response coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353191.0A CN102880357B (en) | 2012-09-19 | 2012-09-19 | Touch control device coordinate calibration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353191.0A CN102880357B (en) | 2012-09-19 | 2012-09-19 | Touch control device coordinate calibration method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102880357A CN102880357A (en) | 2013-01-16 |
| CN102880357B true CN102880357B (en) | 2015-09-23 |
Family
ID=47481714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210353191.0A Active CN102880357B (en) | 2012-09-19 | 2012-09-19 | Touch control device coordinate calibration method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102880357B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107562589A (en) * | 2017-08-29 | 2018-01-09 | 上海与德科技有限公司 | A kind of touch-screen pixel point detecting method and system based on mobile terminal |
| CN109634455B (en) * | 2018-11-30 | 2022-05-24 | 佳格科技(浙江)股份有限公司 | Calibration method and calibration system based on touch screen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101194221A (en) * | 2005-06-08 | 2008-06-04 | 3M创新有限公司 | Touch location determination involving multiple touch location processes |
| CN101201713A (en) * | 2006-12-13 | 2008-06-18 | 株式会社和冠 | Coordinate input apparatus |
| CN101256459A (en) * | 2007-07-13 | 2008-09-03 | 嘉兴闻泰通讯科技有限公司 | Method for calibrating handset touch panel and cover plate |
| CN102591525A (en) * | 2012-01-13 | 2012-07-18 | 广州视源电子科技有限公司 | Calibration method for touch screen, touch screen system and calibration device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03220556A (en) * | 1990-01-25 | 1991-09-27 | Asahi Optical Co Ltd | Method and device for inspecting and correcting original pattern plate |
-
2012
- 2012-09-19 CN CN201210353191.0A patent/CN102880357B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101194221A (en) * | 2005-06-08 | 2008-06-04 | 3M创新有限公司 | Touch location determination involving multiple touch location processes |
| CN101201713A (en) * | 2006-12-13 | 2008-06-18 | 株式会社和冠 | Coordinate input apparatus |
| CN101256459A (en) * | 2007-07-13 | 2008-09-03 | 嘉兴闻泰通讯科技有限公司 | Method for calibrating handset touch panel and cover plate |
| CN102591525A (en) * | 2012-01-13 | 2012-07-18 | 广州视源电子科技有限公司 | Calibration method for touch screen, touch screen system and calibration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102880357A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI536226B (en) | Optical touch device and imaging processing method for optical touch device | |
| WO2008108275A1 (en) | Display terminal with touch panel function and calibration method | |
| US9104265B2 (en) | Touch device and operating method thereof | |
| US8838410B2 (en) | Coordinate input apparatus | |
| KR102319464B1 (en) | Touch device and display including the same | |
| US20130021271A1 (en) | Touch mouse | |
| TWI421753B (en) | Calibration method, detection device and optical touch panel for optical touch panel | |
| CN103365505A (en) | Sensing method and device for improving noise interference of capacitive touch device | |
| US20150063068A1 (en) | Sensing device and positioning method | |
| TWI446250B (en) | Portable optical touch system and operating method thereof | |
| CN102750034A (en) | Method for reporting coordinate point of touch screen and mobile terminal | |
| CN102880357B (en) | Touch control device coordinate calibration method and device | |
| WO2015139427A1 (en) | Laser virtual touch control method and system | |
| JP2014048960A5 (en) | ||
| CN103809815A (en) | Image sensing device, optical touch control device and motion tracking device | |
| CN101382858B (en) | Calibrating method and apparatus for touch screen equipment | |
| CN103809818A (en) | Method for judging whether lens device deviates and optical touch system thereof | |
| TWI590131B (en) | Optical touch device and method for detecting touch point | |
| US20120044211A1 (en) | Optical touch locating system and method thereof | |
| KR20200007922A (en) | Data detection methods and devices, storage media and touch devices | |
| KR102299421B1 (en) | Touch panel display device, Active stylus pen and controlling method thereof | |
| CN102929442B (en) | Method for correcting optical sensing signal | |
| CN102486698A (en) | Touch screen calibrating method | |
| TWI554915B (en) | Touchable control system and method of command positioning | |
| CN104571724A (en) | Optical touch system, touch detection method and computer program product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |