CN103984444B - Infrared electronic white board and touch localization method - Google Patents
Infrared electronic white board and touch localization method Download PDFInfo
- Publication number
- CN103984444B CN103984444B CN201310050761.3A CN201310050761A CN103984444B CN 103984444 B CN103984444 B CN 103984444B CN 201310050761 A CN201310050761 A CN 201310050761A CN 103984444 B CN103984444 B CN 103984444B
- Authority
- CN
- China
- Prior art keywords
- infrared
- receiving tube
- tube
- infrared receiving
- sheet material
- 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
Abstract
The present invention discloses a kind of infrared electronic white board and touch localization method.Wherein, the infrared electronic white board includes the blank sheet material of rectangle and is arranged on the infrared transmitting tube and infrared receiving tube of blank sheet material side, infrared transmitting tube is uniformly set on every side of blank sheet material, just to set an infrared receiving tube between two adjacent infrared transmitting tubes every a infrared transmitting tube, a is natural number；For touch the processing unit of point location, when infrared light path touched point blocks, the coordinate of the infrared transmitting tube and infrared receiving tube corresponding to the infrared light path that touched point blocks is recorded, calculates the coordinate of touch point.Size interval sets infrared receiving tube to infrared transmitting tube of the present invention on each side of infrared electronic white board in certain distance, it can be realized as touching positioning, the length of touch scheme is not limited by infrared transmitting tube luminous intensity, and the quantity of electronic component is greatly reduced, not only simplify structure but also reduce production cost.
Description
Technical field
The present invention relates to location technology is touched, more particularly, to a kind of infrared electronic white board, and pass through infrared transmitting tube
The touch localization method realized with infrared receiving tube.
Background technology
Infrared touch technology is a kind of ancient human-computer interaction technology, and it is positioned against the surrounding of blank, uniformly placed a pair
To Infrared emitting and receiving device, the infrared ray between its infrared transmitting tube and infrared receiving tube constitutes an infrared ray
Light grid, this network coverage in touch-surface, any lighttight object touch whiteboard surface will stop it is red
Outside line, cause not receiving signal or signal weaker, by calculating the position of signal strength and infrared device, you can judge to touch
The position touched.
As shown in figure 1, existing infrared location technology is divided by two groups of infrared transmitting tubes 1 and infrared line reception pipe 2
The X-direction and Y-direction square crossing point A infrared array that the infrared ray that Fa She and not receive is formed are red on blank to realize
Outer positioning.All uniformly arranged in a wherein side for X-direction and a wherein side for Y-direction infrared transmitting tube 1, and in X-direction
Another side and the wherein side of Y-direction all uniformly arrange infrared line reception pipe 2, infrared transmitting tube 1 and infrared line
Reception pipe 2 it is large number of, and the peripheral drive circuit of infrared line reception pipe is more complicated, so as to cause cost higher.
The content of the invention
For overcome the deficiencies in the prior art, the present invention proposes that a kind of infrared exoelectron simple in construction, that cost of implementation is relatively low is white
Plate, and the touch localization method realized by infrared transmitting tube and infrared receiving tube.
The present invention adopts the following technical scheme that realization：A kind of infrared electronic white board, including the blank sheet material of rectangle and setting
Infrared transmitting tube and infrared receiving tube in blank sheet material side, infrared transmitting tube are uniformly set at every of blank sheet material
On side, just to set an infrared receiving tube between two adjacent infrared transmitting tubes every a infrared transmitting tube, a is
Natural number；For touch the processing unit of point location, when infrared light path touched point blocks, record touched point blocks
Infrared light path corresponding to infrared transmitting tube and infrared receiving tube coordinate, calculate the coordinate of touch point.
Wherein, in the X-direction of blank sheet material wherein on a side spread configuration any one infrared receiving tube institute
Abscissa in position, with spread configuration any one infrared receiving tube position on another side in the X direction
Abscissa is unequal.
Wherein, in the Y-direction of blank sheet material wherein on a side spread configuration any one infrared receiving tube institute
Ordinate in position, with spread configuration any one infrared receiving tube position on upper another side in the Y direction
Ordinate is unequal.
Wherein, the infrared receiving tube on two sides in the X-direction of blank sheet material, each infrared transmitting tube and Y-direction
Between angle it is different.
Wherein, the infrared receiving tube on two sides in the Y-direction of blank sheet material, each infrared transmitting tube and X-direction
Between angle it is different.
Wherein, the infrared receiving tube of redundancy is respectively provided with two ends of the side of the X-direction of blank sheet material.
Wherein, the infrared receiving tube of redundancy is respectively provided with two ends of every side of blank.
A kind of touch localization method, it includes：Including step：Some infrared transmitting tubes are uniformly set at rectangle
Surrounding side, and on every side of equal line, with every a infrared transmitting tube just between two adjacent infrared transmitting tubes
One infrared receiving tube is set, and a is natural number；When infrared light path touched point blocks, record touched point blocks infrared
The coordinate of infrared transmitting tube and infrared receiving tube corresponding to light path, calculate the coordinate of touch point.
Compared with prior art, the present invention has the advantages that：
Size interval setting is infrared in certain distance for infrared transmitting tube of the present invention on each side of infrared white board
Reception pipe, it becomes possible to realize and touch positioning, the length for touching scheme is not limited by infrared transmitting tube luminous intensity, and greatly
Reduce the quantity of electronic component, not only simplified structure but also reduced production cost.
Brief description of the drawings
Fig. 1 is the principle schematic of existing electronic whiteboard；
Fig. 2 is the structural representation of infrared electronic white board of the present invention；
Embodiment
As shown in Fig. 2 the present invention proposes a kind of infrared electronic white board simple in construction, cost of implementation is relatively low, it includes：Shape
Shape is the blank sheet material of rectangle, is uniformly distributed on every side of blank sheet material and sets several infrared transmitting tubes, by some
Individual infrared transmitting tube blank sheet material upper measurement into region form touch detection region；Also, with every a infrared transmitting tube just
One infrared receiving tube is set between two adjacent infrared transmitting tubes, and a is natural number；Touch the processing list of point location
Member.
Also, for the present invention in order to reduce the usage quantity of infrared receiving tube, simplified circuit structure, reduction cost of implementation are right
The position of infrared receiving tube employs asymmetric position arrangement, i.e.,：Blank sheet material wherein arranges on a side in the X direction
Set any one infrared receiving tube position abscissa, with spread configuration in the X direction on another side appoint
The abscissa of what infrared receiving tube position is unequal；Equally, electronic whiteboard is in the Y direction wherein on a side
The ordinate of any one infrared receiving tube position of spread configuration, with spread configuration in the Y direction on upper another side
Any one infrared receiving tube position ordinate it is unequal.
Also, the infrared receiving tube on two sides of electronic whiteboard in the X direction, each infrared transmitting tube and Y-direction it
Between angle slightly have difference, equally, the infrared receiving tube on two sides of electronic whiteboard in the Y direction, each infrared transmitting tube
Angle between X-direction slightly has difference.So, a between adjacent 2 infrared receiving tubes of wherein one side of electronic whiteboard is made
The infrared light that individual infrared transmitting tube is sent, at least one infrared receiving tube of another side of electronic whiteboard can be arranged on
Received.
In order to avoid the corner of electronic whiteboard stopped by dust cause to touch it is bad, therefore in the lower left corner of X-direction and bottom right
Angle respectively sets the infrared receiving tube A and infrared receiving tube B of a redundancy, so when dust blocks 1 infrared receiving tube, redundancy
Infrared receiving tube can work.Certainly, it is contemplated that when in use, any one side is likely to be at minimum electronic whiteboard
Position and produce dust accumulation, therefore, the infrared receiver of redundancy can be respectively provided with two ends of every side of electronic whiteboard
Pipe, to improve the functional reliability of electronic whiteboard.
It is disposed therein the infrared light that each infrared transmitting tube of a side is launched and is arranged at another side
An infrared receiving tube receive and launch with receive infrared light the infrared light battle array intersected is formd in touch detection region
Arrange (or being referred to as infrared light grid).When touch objects (finger, the writing pencil of such as user) striking in touch detection region, touch
At least two infrared light paths (infrared light path is as shown in phantom in Figure 2) will be blocked by touching point O, and corresponding to every infrared light path
The position of infrared transmitting tube and infrared receiving tube is fixed, and processing unit is easy to according to corresponding to this two infrared light paths
The intersection point of infrared transmitting tube and the coordinate of the infrared receiving tube infrared light path being blocked that to calculate any two slopes different is (i.e.
Touch point O) position, the position of the intersection point is the position of touch point.
The present invention can use PCB modularized designs, and the PCB of long strip type one by one is connected as electricity
The circuit board at sub- blank edge, each PCB design can reduce into length, when electronic whiteboard edge length is not just to be equal to
, can middle certain piece PCB sanctions is short during the length of integer piece PCB, total PCB length is equal to blank edge
Length, so as to adapt to the electronic whiteboard of arbitrary dimension.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of infrared electronic white board, including the blank sheet material of rectangle and it is arranged on the infrared transmitting tube of blank sheet material side and red
Outer reception pipe, it is characterised in that infrared transmitting tube is uniformly set on every side of blank sheet material, with red every a
Outer transmitting tube just sets an infrared receiving tube between two adjacent infrared transmitting tubes, and a is the natural number more than 1；For
Touch the processing unit of point location, when infrared light path touched point blocks, the infrared light path of record touched point blocking
Corresponding infrared transmitting tube and the coordinate of infrared receiving tube, calculate the coordinate of touch point；
The PCB of long strip type one by one is connected the circuit board as electronic whiteboard edge；
The infrared receiving tube of redundancy is respectively provided with two ends of every side of blank sheet material.
2. infrared electronic white board according to claim 1, it is characterised in that a wherein side in the X-direction of blank sheet material
The abscissa of any one infrared receiving tube position of spread configuration on side, with spread configuration another side in the X direction
The abscissa of any one infrared receiving tube position on side is unequal.
3. infrared electronic white board according to claim 1, it is characterised in that a wherein side in the Y-direction of blank sheet material
The ordinate of any one infrared receiving tube position of spread configuration on side, with spread configuration upper another side in the Y direction
The ordinate of any one infrared receiving tube position on side is unequal.
4. infrared electronic white board according to claim 1, it is characterised in that on two sides in the X-direction of blank sheet material
Infrared receiving tube, the angle between each infrared transmitting tube and Y-direction is different.
5. infrared electronic white board according to claim 1, it is characterised in that on two sides in the Y-direction of blank sheet material
Infrared receiving tube, the angle between each infrared transmitting tube and X-direction is different.
6. a kind of touch localization method, it is characterised in that including step：
Some infrared transmitting tubes are uniformly set to the surrounding side of rectangle, and on every side of equal line, with every a
Individual infrared transmitting tube just sets an infrared receiving tube between two adjacent infrared transmitting tubes, and a is the natural number more than 1；
The step uses PCB modularized designs, and the PCB of long strip type one by one is connected as electronic whiteboard edge
Circuit board, each PCB design can reduce into length, when electronic whiteboard edge length is not just to be equal to integer piece PCB electricity
It is during the length of road plate, middle certain piece PCB sanctions is short, total PCB length is equal to the length at blank edge；Work as infrared light path
When touched point blocks, the seat of infrared transmitting tube and infrared receiving tube corresponding to the infrared light path of record touched point blocking
Mark, calculate the coordinate of touch point.
7. touch localization method according to claim 6, it is characterised in that wherein arrange set on a side in the X direction
The abscissa for any one the infrared receiving tube position put, it is any on another side in the X direction with spread configuration
The abscissa of one infrared receiving tube position is unequal；In the Y direction wherein on a side spread configuration it is any
The ordinate of one infrared receiving tube position, any one on upper another side is infrared in the Y direction with spread configuration
The ordinate of reception pipe position is unequal.
8. according to the touch localization method of claim 6 or 7, it is characterised in that infrared on two sides in the X direction connects
Closed tube, the angle between each infrared transmitting tube and Y-direction are different；The infrared receiving tube on two sides in the Y direction, each
Angle between infrared transmitting tube and X-direction is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050761.3A CN103984444B (en) | 2013-02-07 | 2013-02-07 | Infrared electronic white board and touch localization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050761.3A CN103984444B (en) | 2013-02-07 | 2013-02-07 | Infrared electronic white board and touch localization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103984444A CN103984444A (en) | 2014-08-13 |
| CN103984444B true CN103984444B (en) | 2018-01-26 |
Family
ID=51276449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310050761.3A Active CN103984444B (en) | 2013-02-07 | 2013-02-07 | Infrared electronic white board and touch localization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103984444B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293282A (en) * | 2015-06-03 | 2017-01-04 | 西藏丹贝投资有限公司 | A kind of infrared touch panel with gesture identification function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201749448U (en) * | 2010-08-27 | 2011-02-16 | 湖州佳格电子科技有限公司 | Infrared touch screen |
| CN102053762A (en) * | 2009-10-30 | 2011-05-11 | 北京汇冠新技术股份有限公司 | Infrared touch screen and touch positioning method thereof |
| CN102566834A (en) * | 2011-12-22 | 2012-07-11 | 北京鸿合盛视数字媒体技术有限公司 | Infrared electronic whiteboard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101698454B1 (en) * | 2010-10-22 | 2017-01-23 | 삼성디스플레이 주식회사 | Optical source assembly and touch screen device having the same |
-
2013
- 2013-02-07 CN CN201310050761.3A patent/CN103984444B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053762A (en) * | 2009-10-30 | 2011-05-11 | 北京汇冠新技术股份有限公司 | Infrared touch screen and touch positioning method thereof |
| CN201749448U (en) * | 2010-08-27 | 2011-02-16 | 湖州佳格电子科技有限公司 | Infrared touch screen |
| CN102566834A (en) * | 2011-12-22 | 2012-07-11 | 北京鸿合盛视数字媒体技术有限公司 | Infrared electronic whiteboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103984444A (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015192621A1 (en) | Touch sensor, touch sensor device, fingerprint image acquisition device, and electronic device | |
| CN103235670A (en) | Infrared touch module, infrared touch screen and display device | |
| CN102622133A (en) | Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen | |
| CN202795304U (en) | Front image multi-touch device based on infrared lasers | |
| WO2016086647A1 (en) | Infrared touch screen, touch detection method and display device thereof | |
| CN102929452A (en) | Ultrasound sensing touch screen | |
| CN103984445A (en) | Infrared touch screen and touch point positioning method thereof | |
| CN102073417A (en) | Electronic device with infrared touch identification function | |
| CN103984444B (en) | Infrared electronic white board and touch localization method | |
| CN103984443A (en) | Infrared touch screen and touch point positioning method | |
| CN104571731A (en) | Touch panel and display device | |
| TW201314533A (en) | Apparatus for detecting position by infrared rays and touch panel using the same | |
| CN102289330A (en) | Display with infrared touch panel and method for judging touch points thereof | |
| CN102855043B (en) | A kind of single conductive layer multi-point identification capacitor screen | |
| CN102542265B (en) | Multi-touch eraser identification method based on camera positioning and device therefor | |
| CN205193768U (en) | Touch frame of double -screen display system | |
| CN202003339U (en) | Interactive display screen and interactive projection screen | |
| CN101866247A (en) | Side detection-type multipoint touch screen based on frustrated total internal reflection | |
| CN202372961U (en) | Infrared touch screen capable of changing transmission path of infrared light | |
| CN104915045B (en) | Touch screen and its transparent conductive film, touch-control mobile terminal based on stylus | |
| CN105573551A (en) | Capacitance type touch screen sensor | |
| CN202870783U (en) | Infrared tube touch screen | |
| CN104503634A (en) | Infrared touch control device and method | |
| CN204229384U (en) | A kind of infrared touch screen and display device | |
| CN102063221A (en) | Interactive display screen and interactive projection screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 518000, Guangdong, Nanshan District, Taoyuan Shenzhen street, 1213 cents Xian Avenue, 2 Industrial Zone, 3 District, South District, 3 floor Applicant after: SHENZHEN IBOARD TECHNOLOGY CO., LTD. Address before: 518000, Guangdong, Nanshan District, Taoyuan Shenzhen street, 1213 cents Xian Avenue, 2 Industrial Zone, 3 District, South District, 3 floor Applicant before: Shenzhen Iboard Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |