CN101187844A - Infrared electronic whiteboard multi-contact processing method - Google Patents
Infrared electronic whiteboard multi-contact processing method Download PDFInfo
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- CN101187844A CN101187844A CNA2007100320090A CN200710032009A CN101187844A CN 101187844 A CN101187844 A CN 101187844A CN A2007100320090 A CNA2007100320090 A CN A2007100320090A CN 200710032009 A CN200710032009 A CN 200710032009A CN 101187844 A CN101187844 A CN 101187844A
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Abstract
The invention relates to an application of the infrared technique, in particular to a process method of an infrared electronic white board which can precisely realize multiple contacts. When multiple contacts are generated, objects stay or slide on two coordinate points on the surface of the infrared electronic white board, a substratum processor gains X and Y coordinates of the two coordinate points and compares respective areas which are occupied by the two objects and the relative distances, and distinguishes the mode of current multiple contacts according to the compared values, and then sends command and erases and writes on the infrared electronic white board. The invention can be applicable to various input situations of multiple contacts, which improves interchangeability of the infrared electronic white board in the application, and enables the infrared electronic white board to support the input style of multiple contacts, and simultaneously, a computer is used to share calculating pressure of the substratum processor, which stabilizes the input of multiple-contact mode and the compatibility of the infrared electronic white board.
Description
Technical field
The present invention relates to the application of infrared technique, specifically is a kind for the treatment of method that can realize the multiple contact of infrared exoelectron blank of multi-touch accurately.
Background technology
The infrared exoelectron blank adopts infrared technique, and infrared technique is by many infrared emission and reception to be come work to pipe, utilizes the infrared transmitting tube of same wavelength, infrared receiving tube (abbreviation infrared tube) just can obtain simple infra-red detection method.Any object of light that stops all can be used as pen, as long as there is object blocks to live line between the infrared tube, the signal of reception will sharply descend.Existing infrared electronic blank all is that infrared tube is gathered on electronic whiteboard four limits, and in the relative both sides, Yi Bian be power valve, another side is exactly a receiving tube.Infrared ray does not stop goes to scan this surface, in case have object to exist on the surface or slip over, then the receiving tube on X, the Y direction all changes, and after MCU receives this variation, just knows the XY coordinate of this object, thereby can write.And then in order to improve infrared exoelectron blank interactivity in use, just require it can support the input of multi-touch formula, and that the input of multi-touch formula often is difficult to the identification processing system of infrared exoelectron blank is properly compatible, the function that realizes multi-touch tends to attend to one thing and lose sight of another, sample rate and function are difficult to satisfactory to both parties, make the sensitivity of blank be in the relatively poor state.
Summary of the invention
The present invention makes the infrared exoelectron blank can realize multi-touch accurately in order to remedy the defective of prior art, has proposed the treating method of the multiple contact of a kind of infrared exoelectron blank.
To achieve these goals, the present invention has adopted following technical scheme:
The disposal route of the multiple contact of infrared exoelectron blank, infrared tube and floor processor are set on the infrared exoelectron blank, infrared tube is arranged in infrared exoelectron blank four limits, be power valve on one side in the relative both sides, another side is a receiving tube, infrared ray continues the scanned infrared electronic whiteboard surface from the power valve to the receiving tube, in case there is object to stop or slip in infrared exoelectron whiteboard surface coordinate points, the output of receiving tube on the X of this coordinate points, the Y direction changes, and floor processor is sent instruction to X, the Y coordinate of this object and write the infrared exoelectron blank; When multiple contact takes place, the infrared exoelectron whiteboard surface has has object to stop or when slipping over simultaneously on two coordinate points, floor processor obtain two coordinate points X, Y coordinate and two area size and relative distances that object is shared separately relatively, distinguish current multiple contact mode according to fiducial value, and then send instruction and write the infrared exoelectron blank.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if in the X scope or Y scope of big object, then ignoring the receiving tube output that causes when wisp stops or slips on the infrared exoelectron blank, the residing coordinate points of wisp changes.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if wisp is not in the X scope or Y scope of big object, but the relative distance of big object and wisp coordinate points of living in then receives the coordinate figure of handling these two objects simultaneously greater than the arrangement width of 16 infrared tubes.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if the residing coordinate points of wisp is not in the X scope or Y scope of big object, and the relative distance of big object and wisp coordinate points of living in is then ignored the receiving tube output that causes when big object stops or slips over and is changed less than the arrangement width of 16 infrared tubes on the infrared exoelectron blank.
One of situation of multiple contact takes place, as two or more wisps on the infrared exoelectron blank time, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is greater than the arrangement width of 16 infrared tubes, floor processor is sent the residing coordinate points of each wisp simultaneously and is write instruction.
One of situation of multiple contact takes place, when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is less than the arrangement width of 16 infrared tubes, the object that floor processor is chosen these two wisp coordinate points of living in sends rotation or convergent-divergent or moves or other action commands.
One of situation of multiple contact takes place, when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is the arrangement width of 3-8 infrared tube, floor processor is sent these two wisp coordinate points of living in and write instruction.
As improvement of the technical scheme, floor processor obtain two coordinate points X, Y coordinate time adopt following redundant arithmetic:
Floor processor is obtained the scanning of infrared tube on the blank, and each T time, (0ms＜T＜100ms) interior scanning result was considered as a frame;
First frame only allows the zone group point that a single-point or multiple spot are formed, and exceeds two points, Ignore All; For single-point, directly obtain its X, Y coordinate; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Each frame after first frame then allows a plurality of points;
Second frame is the center with the single-point of first frame or X, the Y coordinate of zone group point when having judged one or two or at plural, point and its distance around calculating; When a zone group point and a single-point occurring, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and X, the whole records of Y coordinate of each point in the zone group, supply next frame to compare; When two single-points occurring, directly write down X, Y coordinate; Two whens point zone group occur, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and the zone organize in X, the whole records of Y coordinate of each point; When having only a single-point or zone group point,, directly obtain its X, Y coordinate for single-point; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Other situation Ignore All;
In second frame, with respect to the single-point or the zone group point of first frame, the point that the shift position is big relatively is as moving point; The point that the shift position is relatively little is as dead point; Moving some assent write operation, dead point only writes down not assent write operation of coordinate;
The 3rd frame adopts the principle of second frame, judges one or two point equally, and with respect to a point or two points of previous frame, the point of mobile relative position in two pixels is all as dead point, otherwise the moving point of conduct; Dead point only writes down not assent write operation of coordinate, and moving point allows to write; If two dead points occur, all only write down not assent write operation of coordinate; If two moving points occur, equal assent write operation;
Thereafter the processing of each frame, identical with the 3rd frame.
Preferable, floor processor upload the data to computing machine by USB interface and carries out calculation process, its information of the effective coordinate points of first that draws after the Computer Processing adopts mouse information to transmit, and the twoth available point that draws after the Computer Processing adopts other pipelines outside the mouse information transmission to transmit.
Beneficial effect of the present invention is: can be suitable for the input condition of various multiple contacts, improve infrared exoelectron blank interactivity in use, make it can well support the input mode of multi-touch formula; Share the computing pressure of floor processor simultaneously with computing machine, stablized the compatibility of multi-touch formula input with the infrared exoelectron blank.
Description of drawings
Fig. 1 is the principle schematic of infrared exoelectron blank identification input of the present invention.
Fig. 2 is the arrangement synoptic diagram of infrared exoelectron blank infrared tube of the present invention.
Fig. 3 is that the present invention judges the disposal route logic diagram that whether exists a little louder.
Fig. 4 is the disposal route logic diagram that there be a little bigger when input in the present invention.
Fig. 5 is the disposal route logic diagram of the present invention when having two points.
Embodiment
The present invention is described further below in conjunction with specification drawings and specific embodiments, but the scope that the present invention protected is not limited thereto.
Extremely shown in Figure 5 as Fig. 1:
The disposal route of the multiple contact of infrared exoelectron blank, infrared tube and floor processor are set on the infrared exoelectron blank, infrared tube is arranged in infrared exoelectron blank four limits, be power valve 1 on one side in the relative both sides, another side is a receiving tube 2, infrared ray is 2 lasting scanned infrared electronic whiteboard surface from power valve 1 to receiving tube, in case there is object 3 to stop or slip in infrared exoelectron whiteboard surface coordinate points, the output of receiving tube on the X of this coordinate points, the Y direction changes, and floor processor is sent instruction to X, the Y coordinate of this object and write the infrared exoelectron blank; When multiple contact takes place, the infrared exoelectron whiteboard surface has has object to stop or when slipping over simultaneously on two coordinate points, floor processor obtain two coordinate points X, Y coordinate and two area size and relative distances that object is shared separately relatively, distinguish current multiple contact mode according to fiducial value, and then send instruction and write the infrared exoelectron blank.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if in the X scope or Y scope of big object, then ignoring the receiving tube output that causes when wisp stops or slips on the infrared exoelectron blank, the residing coordinate points of wisp changes.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if wisp is not in the X scope or Y scope of big object, but the relative distance of big object and wisp coordinate points of living in then receives the coordinate figure of handling these two objects simultaneously greater than the arrangement width of 16 infrared tubes.
One of situation of multiple contact takes place, when described two objects have a big object and a wisp, if the residing coordinate points of wisp is not in the X scope or Y scope of big object, and the relative distance of big object and wisp coordinate points of living in is then ignored the receiving tube output that causes when big object stops or slips over and is changed less than the arrangement width of 16 infrared tubes on the infrared exoelectron blank.
One of situation of multiple contact takes place, as two or more wisps on the infrared exoelectron blank time, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is greater than the arrangement width of 16 infrared tubes, floor processor is sent the residing coordinate points of each wisp simultaneously and is write instruction.
One of situation of multiple contact takes place, when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is less than the arrangement width of 16 infrared tubes, the object that floor processor is chosen these two wisp coordinate points of living in sends rotation or convergent-divergent or moves or other action commands.
One of situation of multiple contact takes place, when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is the arrangement width of 3-8 infrared tube, floor processor is sent these two wisp coordinate points of living in and write instruction.
Floor processor obtain two coordinate points X, Y coordinate time adopt following redundant arithmetic:
Floor processor is obtained the scanning of infrared tube on the blank, and each T time, (0ms＜T＜100ms) interior scanning result was considered as a frame;
First frame only allows the zone group point that a single-point or multiple spot are formed, and exceeds two points, Ignore All; For single-point, directly obtain its X, Y coordinate; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Each frame after first frame then allows a plurality of points;
Second frame is the center with the single-point of first frame or X, the Y coordinate of zone group point when having judged one or two or at plural, point and its distance around calculating; When a zone group point and a single-point occurring, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and X, the whole records of Y coordinate of each point in the zone group, supply next frame to compare; When two single-points occurring, directly write down X, Y coordinate; Two whens point zone group occur, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and the zone organize in X, the whole records of Y coordinate of each point; When having only a single-point or zone group point,, directly obtain its X, Y coordinate for single-point; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Other situation Ignore All;
In second frame, with respect to the single-point or the zone group point of first frame, the point that the shift position is big relatively is as moving point; The point that the shift position is relatively little is as dead point; Moving some assent write operation, dead point only writes down not assent write operation of coordinate;
The 3rd frame adopts the principle of second frame, judges one or two point equally, and with respect to a point or two points of previous frame, the point of mobile relative position in two pixels is all as dead point, otherwise the moving point of conduct; Dead point only writes down not assent write operation of coordinate, and moving point allows to write; If two dead points occur, all only write down not assent write operation of coordinate; If two moving points occur, equal assent write operation;
Thereafter the processing of each frame, identical with the 3rd frame.
Floor processor in the technique scheme upload the data to computing machine by USB interface and carries out calculation process, its information of the effective coordinate points of first that draws after the Computer Processing adopts mouse information to transmit, and the twoth available point that draws after the Computer Processing adopts other pipelines outside the mouse information transmission to transmit.
Claims (10)
1. the disposal route of the multiple contact of infrared exoelectron blank, infrared tube and floor processor are set on the infrared exoelectron blank, infrared tube is arranged in infrared exoelectron blank four limits, be power valve on one side in the relative both sides, another side is a receiving tube, infrared ray continues the scanned infrared electronic whiteboard surface from the power valve to the receiving tube, in case there is object to stop or slip in infrared exoelectron whiteboard surface coordinate points, the X of this coordinate points, receiving tube output on the Y direction changes, floor processor is to the X of this object, the Y coordinate sends instruction and writes the infrared exoelectron blank, it is characterized in that: when multiple contact takes place, the infrared exoelectron whiteboard surface has has object to stop or when slipping over simultaneously on two coordinate points, floor processor obtain two coordinate points X, the Y coordinate also compares two area size and relative distances that object is shared separately, distinguish current multiple contact mode according to fiducial value, and then send instruction and write the infrared exoelectron blank.
2. the disposal route of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when described two objects have a big object and a wisp, if in the X scope or Y scope of big object, then ignoring the receiving tube output that causes when wisp stops or slips on the infrared exoelectron blank, the residing coordinate points of wisp changes.
3. the disposal route of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when described two objects have a big object and a wisp, if wisp is not in the X scope or Y scope of big object, but the relative distance of big object and wisp coordinate points of living in then receives the coordinate figure of handling these two objects simultaneously greater than the arrangement width of 16 infrared tubes.
4. the disposal route of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when described two objects have a big object and a wisp, if the residing coordinate points of wisp is not in the X scope or Y scope of big object, and the relative distance of big object and wisp coordinate points of living in is then ignored the receiving tube output that causes when big object stops or slips over and is changed less than the arrangement width of 16 infrared tubes on the infrared exoelectron blank.
5. the treating method of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when two or more wisps is on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is greater than the arrangement width of 16 infrared tubes, floor processor is sent the residing coordinate points of each wisp simultaneously and is write instruction.
6. the treating method of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is less than the arrangement width of 16 infrared tubes, the object that floor processor is chosen these two wisp coordinate points of living in sends rotation or convergent-divergent or moves or other action commands.
7. the treating method of the multiple contact of infrared exoelectron blank according to claim 1, it is characterized in that: when two wisps are on the infrared exoelectron blank, floor processor is obtained the relative distance of its coordinate points of living in, if relative distance is the arrangement width of 3-8 infrared tube, floor processor is sent these two wisp coordinate points of living in and is write instruction.
8. according to the treating method of the multiple contact of the described infrared exoelectron blank of claim 1 to 7, it is characterized in that: floor processor obtain two coordinate points X, Y coordinate time adopt following redundant arithmetic
Floor processor is obtained the scanning of infrared tube on the blank, and each T time, (0ms＜T＜100ms) interior scanning result was considered as a frame;
First frame only allows the zone group point that a single-point or multiple spot are formed, and exceeds two points, Ignore All; For single-point, directly obtain its X, Y coordinate; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Each frame after first frame then allows a plurality of points;
Second frame is the center with the single-point of first frame or X, the Y coordinate of zone group point when having judged one or two or at plural, point and its distance around calculating; When a zone group point and a single-point occurring, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and X, the whole records of Y coordinate of each point in the zone group, supply next frame to compare; When two single-points occurring, directly write down X, Y coordinate; Two whens point zone group occur, average algorithm for X, the Y coordinate of each point in the group point of zone, with X, the Y coordinate of result as zone group point, and the zone organize in X, the whole records of Y coordinate of each point; When having only a single-point or zone group point,, directly obtain its X, Y coordinate for single-point; X, Y coordinate for each point in the group point of zone average algorithm, with X, the Y coordinate of result as zone group point; Other situation Ignore All;
In second frame, with respect to the single-point or the zone group point of first frame, the point that the shift position is big relatively is as moving point; The point that the shift position is relatively little is as dead point; Moving some assent write operation, dead point only writes down not assent write operation of coordinate;
The 3rd frame adopts the principle of second frame, judges one or two point equally, and with respect to a point or two points of previous frame, the point of mobile relative position in two pixels is all as dead point, otherwise the moving point of conduct; Dead point only writes down not assent write operation of coordinate, and moving point allows to write; If two dead points occur, all only write down not assent write operation of coordinate; If two moving points occur, equal assent write operation;
Thereafter the processing of each frame, identical with the 3rd frame.
9. the treating method of the multiple contact of infrared exoelectron blank according to claim 8 is characterized in that: floor processor upload the data to computing machine by USB interface and carries out calculation process.
10. the treating method of the multiple contact of infrared exoelectron blank according to claim 9, it is characterized in that: its information of the effective coordinate points of first that draws after the Computer Processing adopts mouse information to transmit, and the twoth available point that draws after the Computer Processing adopts other pipelines outside the mouse information transmission to transmit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100320090A CN101187844A (en) | 2007-12-04 | 2007-12-04 | Infrared electronic whiteboard multi-contact processing method |
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| CNA2007100320090A CN101187844A (en) | 2007-12-04 | 2007-12-04 | Infrared electronic whiteboard multi-contact processing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943971B (en) * | 2009-07-08 | 2012-09-19 | 广达电脑股份有限公司 | Multi-contact identification system and method |
| CN102736771A (en) * | 2011-03-31 | 2012-10-17 | 比亚迪股份有限公司 | Method and device for identifying multi-point rotation motion |
| CN104834413A (en) * | 2015-05-27 | 2015-08-12 | 广州华欣电子科技有限公司 | Recognition method for touch points in infrared touch frame and infrared touch recognizer |
| CN106996799A (en) * | 2017-04-01 | 2017-08-01 | 北京东方计量测试研究所 | Fine setting encoder, system and recognition methods for instrument panel |
-
2007
- 2007-12-04 CN CNA2007100320090A patent/CN101187844A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943971B (en) * | 2009-07-08 | 2012-09-19 | 广达电脑股份有限公司 | Multi-contact identification system and method |
| CN102736771A (en) * | 2011-03-31 | 2012-10-17 | 比亚迪股份有限公司 | Method and device for identifying multi-point rotation motion |
| CN104834413A (en) * | 2015-05-27 | 2015-08-12 | 广州华欣电子科技有限公司 | Recognition method for touch points in infrared touch frame and infrared touch recognizer |
| CN106996799A (en) * | 2017-04-01 | 2017-08-01 | 北京东方计量测试研究所 | Fine setting encoder, system and recognition methods for instrument panel |
| CN106996799B (en) * | 2017-04-01 | 2019-07-26 | 北京东方计量测试研究所 | Fine tuning encoder, system and recognition methods for instrument panel |
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