CN101887325A - Optical touch control method and device thereof - Google Patents
Optical touch control method and device thereof Download PDFInfo
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- CN101887325A CN101887325A CN2009101364998A CN200910136499A CN101887325A CN 101887325 A CN101887325 A CN 101887325A CN 2009101364998 A CN2009101364998 A CN 2009101364998A CN 200910136499 A CN200910136499 A CN 200910136499A CN 101887325 A CN101887325 A CN 101887325A
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Abstract
The invention discloses optical touch control method and device thereof. The optical touch control method comprises the following steps of supplying a shadow of an object by a light source, and judging the position and a time point of the object touching a display device according to the width variation of the shadow. By making use of the touch control method, the optical touch control device can be applied to a large size display device without adding excessive cost. The optical touch control device comprises a first light source and a sensor, wherein the sensor judges the position and the time point of the object touching the display device according to the width of the object shadow generated by the first light source.
Description
Technical field
The present invention relates to a kind of optical touch control method and device thereof, particularly relate to a kind of shadow of object that utilizes and judge optical touch control method and device thereof that touch-control takes place.
Background technology
Contactor control device has been the main element of most of now electronic installation indispensabilities, is common in general ATM (Automatic Teller Machine).And present many handheld apparatus, as mobile phone and personal digital assistant etc., gradually also more and more widely for the application of touch-control.Touch technology mainly can be divided into resistance-type, condenser type and optical profile type or the like.The drive principle of resistance-type is to utilize the mode of voltage drop to look for axes of coordinates, when the electric resistance touch-control screen is contacted, because the loop is switched on, and can produce voltage drop, and on the level and vertical direction of panel, with the difference of position, voltage drop is also different, so controller can calculate coordinate according to voltage drop.Capacitive framework then is with tin indium oxide (Indium Tin Oxide, ITO) glass is transparent conducting structures, its drive principle is four jiaos of discharges at ito glass, make the surface form a uniform electric field, when the object that can conduct electricity, for example finger runs off the current lead-through of trace, the ratio that electric current runs off be can calculate, and and then the X-axis and the Y-axis coordinate at position of touch place calculated.
And the principle of work of optical touch control (or being called infrared touch control) is respectively to place at least one light emitted device and receiver on X-axis and Y-axis coordinate, in correspondence with each other.The ejaculation infrared light beam of continuing property of light emitted device constitutes matrix.When touching with finger, pen or any object that can stop light, can block light beam by this point, can detect the position of touch at the receiver of X-axis and Y-axis, to judge its coordinate.
Yet no matter above-mentioned touch technology is resistance-type, condenser type or optical profile type, detects position of touch or when the size of display device was increasing, needed touch detection element was more when needs are more accurate, that is to say that cost also and then increases.Therefore exist a kind of demand on large-sized display device, can not increase too many cost, can reach the effect of accurate detecting position of touch equally to design another kind of touch technology.
This shows that above-mentioned existing touch technology obviously still has inconvenience and defective, and demands urgently further being improved in method, product structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and conventional method and product do not have appropriate method and structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new optical touch control method and device thereof, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing touch technology exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new optical touch control method and device thereof, can improve general existing touch technology, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing touch control method exists, and a kind of new optical touch control method, technical matters to be solved are provided is to make it that a kind of judge by shadow of object position of touch and the optical touch control method of touch-control time are provided, and is very suitable for practicality.
Another object of the present invention is to, overcome the defective that existing touch control method exists, and a kind of new optical touch control method is provided, technical matters to be solved is that it be can be applicable on the large scale display device, and need not to use a large amount of wirings, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of optical touch control method that the present invention proposes, it may further comprise the steps: the shade that an object is provided by one first light source; Reach wide variety, judge a touch position and the touching time point of this object in a display device according to this shade.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid optical touch control method, wherein this method more comprises the wide variety of judging this shade of this object by a sensor, and then determines this touch position and this touching time point of this object in this display device.
Aforesaid optical touch control method, wherein this method more comprises provides a secondary light source in order to strengthening this shade of this object, and then the accuracy of promoting this optical touch control method.
Aforesaid optical touch control method, wherein said optical touch control method can be applicable to multi-point touch.
Aforesaid optical touch control method, wherein said this method the width size of this shade near zero or when equalling zero, be judged to be this position and this time point of this display device of touching of this object.
The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of optical touch control apparatus that the present invention proposes, it comprises: one first light source; And a sensor, this sensor by the shade width that this first light source produces, is judged a position and a time point of this object touch-control one display device according to an object.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid optical touch control apparatus, wherein said sensor is judged the wide variety of this shade of this object, and then determines this object to touch this position and this time point of this display device.
Aforesaid optical touch control apparatus, wherein said device more comprise a secondary light source in order to strengthening this shade of this object, and then promote the accuracy that this optical touch is sent out method.
Aforesaid optical touch control apparatus, wherein said optical touch control apparatus are a multipoint mode optical touch control apparatus.
Aforesaid optical touch control apparatus, wherein said optical touch control apparatus can be applicable to a switchgear.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, for achieving the above object, the invention provides a kind of optical touch control method, this touch control method comprises the shade that object is provided by light source, then according to the wide variety of this shade, judges the position and the time point of this object touching display device.
According to above-mentioned purpose, the present invention discloses a kind of optical touch control method, and this touch control method is included in first light source is provided in the display device; When object during near this display device, this object produces a shade on display device; Detect shade width size by sensor; And when the width size of shade near zero or equal zero, sensor is judged a touch-control time point of this object.
According to above-mentioned purpose, the present invention discloses a kind of optical touch control apparatus, and this optical touch control apparatus comprises first light source and sensor.Sensor by the shade width that first light source produces, is judged a position and the time point of this object touch-control to display device according to this object.
By technique scheme, optical touch control method of the present invention and device thereof have following advantage and beneficial effect at least:
1, the present invention can be applied in this optical touch control apparatus on the large scale display device, and can additionally not increase too much cost by above-mentioned touch control method.
2, optical touch control apparatus of the present invention comprises first light source and sensor.Sensor by the shade width that first light source produces, is judged a position and the time point of this object touch-control to display device according to this object.
In sum, the invention relates to a kind of optical touch control method and device thereof, this optical touch control method comprises the shade that object is provided by light source, then according to the wide variety of this shade, judges the position and the time point of this object touching display device.By above-mentioned touch control method, this optical touch control apparatus can be applied on the large scale display device, and can additionally not increase too much cost.This optical touch control apparatus, this optical touch control apparatus comprises first light source and sensor.Sensor by the shade width that first light source produces, is judged a position and the time point of this object touch-control to display device according to this object.
The present invention has obvious improvement technically, has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Figure 1A and Figure 1B are the synoptic diagram of first embodiment of optical touch control apparatus.
Fig. 2 A and Fig. 2 B are the synoptic diagram of second embodiment of optical touch control apparatus.
Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D are the synoptic diagram of shade width of the present invention and time relationship.
Fig. 4 is the touch detection process flow diagram of optical touch of the present invention.
Fig. 5 is the synoptic diagram of the 3rd embodiment of optical touch control apparatus of the present invention.
Fig. 6 is the synoptic diagram of the 4th embodiment of optical touch control apparatus of the present invention.
Fig. 7 is that optical touch control apparatus of the present invention is applied to the synoptic diagram on the projecting display.
10: 102: the first light sources of optical touch control apparatus
104: sensor 106: display device
108: object 110: shade
1102: visible shade
402-412: step 50: virtual switch
506: wall 508: finger
510: shade 60: optical touch control apparatus
Light source 604 in 602: the first: sensor
606: secondary light source 608: object
610: display device 702: projecting display
704: screen 706: inductor
708: hand 710: shade
712: touch point
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the optical touch control method that foundation the present invention is proposed and install its embodiment, method, step, structure, feature and effect thereof, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.For convenience of description, in following embodiment, components identical is represented with identical numbering.
Some embodiments of the present invention will be described in detail as follows.Yet except following description, the present invention can also be widely implements at other embodiment, and scope of the present invention is not subjected to the qualification of embodiment, its with after claim be as the criterion.Moreover for clearer description being provided and being more readily understood the present invention, graphic interior each several part is not drawn according to its relative size, and some size is compared with other scale dependents and modified; Incoherent detail section is not drawn fully yet, in the hope of graphic succinct.
The synoptic diagram of first embodiment of Figure 1A and Figure 1B display optical contactor control device.Shown in Figure 1A, this optical touch control apparatus 10 mainly comprises first light source 102 and sensor 104.First light source 102 can be visible light source such as conventional bulb, also can invisible light source such as infrared ray etc.First light source 102 is beaten light on a display device 106, yet in different embodiment, first light source 102 also can be incident upon on the wall, cooperates projecting display to use.Sensor 104 (as panadaptor) is used to detect the shade 110 of object 108 (for example finger or pointer etc.), shade 110 as object is apparent on the display device, and sensor 104 can judge whether this object touches this display device 106 according to the width size of the visible shade of detecting 1102.When object 108 during more and more near display device 106, shown in Figure 1B, the visible shade 1102 of sensor 104 object that detects 108 is also more and more littler, when visible shade 1102 little under invisible situation (be width be zero or width convergence zero), sensor 104 is that decidable object 108 has touched display device 106, and then reaches the effect of detecting touch-control.
The synoptic diagram of second embodiment of Fig. 2 A and Fig. 2 B display optical contactor control device.Shown in Fig. 2 A and Fig. 2 B, this optical touch control apparatus 10 can be placed on first light source 102 on the diverse location with sensor 104 according to the difference of context.Compared to Figure 1A and Figure 1B, first light source 102 is lower with the position of sensor 104, sensor 104 can be placed on any position above or below the display device 106, as long as can detect the visible shade 1102 of object 108 exactly, all can reach the purpose of touch detection.
Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D show the synoptic diagram of shade width of the present invention and time relationship.As shown in Figure 3A, when object during more and more near display device, the width of the shadow of object that is measured (or is called average top width (average tip width, atw) more and more littler, and when average top width size convergence zero or when equalling zero, its average top width also is zero for the differential of time constant, shown in Fig. 3 B, promptly can be considered the time that touch-control begins, and, promptly can be considered the time that touch-control finishes when the moment that average top width size begins to increase.Fig. 3 C show when object of short duration touch display device, by the differential of average top width for time constant, shown in Fig. 3 D, the moment in the time of can calculating touching accurately.Yet, need to prove that at this in different embodiment, this optical touch control apparatus can also be applied on the multi-point touch, can simply learn for being familiar with this skill person by the technological means that the locational shade of sensor sensing multiple spot changes, need not give unnecessary details at this.
Fig. 4 shows the touch detection process flow diagram of optical touch of the present invention.As shown in Figure 4, in step 402, outside display device, provide a light source.In step 404, when object during near the top of display device, this object can produce shade because of the irradiation of light source on display device.In step 406, detect shade width size by a sensor.In step 408, sensor calculates the average top width of this shade, in step 410, when the average top width size of this shade near zero or equal zero, sensor is judged to be the touch-control time point of object, and in step 412, the work of touch-control begins action at last.The time of touch-control can be in a flash, or continues for some time, and the position of touch-control also is not limited to and has only single-point, and optical touch control method of the present invention also can be applicable in the application of multi-point touch.
Fig. 5 shows the synoptic diagram of the 3rd embodiment of optical touch control apparatus of the present invention.Because optical touch of the present invention is to judge touch point with the shade of detecting touch object, detects touch point so need not to set up many electric wires on display device.According to above-mentioned advantage, can design the embodiment that a kind of virtual switch that utilizes this optical touch control apparatus and produce is used.As shown in Figure 5, this virtual switch 50 mainly comprises first light source 502 and sensor 504, first light source 502 is except can providing the required light of image, more can project an image (for example image of similar switchgear) on wall 506 (or display device), 504 of sensors are used to detect side to be changed near the shades 510 that produce owing to pointing (or seeing through jobbie) 508 on fixed position or stabilized image.When the user will control this virtual switch 50, when user's finger 508 points on fixed position or the stabilized image, when user's finger 508 (or object) touches on this fixed position or the stabilized image, the shade 510 width sizes that sensor 504 can detect this moment also approach zero or when equalling zero, sensor 504 is promptly judged touching time of origin point, and this message is passed to electrical equipment or electronic installation, reach the purpose that this electrical equipment of control or electronic installation are opened or closed.By above-mentioned design, be connected to electronic installation at the switchgear of this embodiment without any circuit, as the not traditional for another example switchgear in the position of switchgear, must be in the fixed position.The user can move to diverse location with first light source 502 and sensor 504, can reach the effect that opens and closes electronic installation equally.
Fig. 6 shows the 4th embodiment of optical touch control apparatus of the present invention.As shown in Figure 6, this optical touch control apparatus 60 comprises first light source 602, sensor 604 and secondary light source 606.Be different from the optical touch control apparatus in the above-mentioned illustrated embodiment, the optical touch control apparatus 60 among this embodiment more comprises secondary light source 606.Because shade 612 width that optical touch control apparatus 60 of the present invention mainly utilizes object 608 to be incident upon display device 610 (or wall) are judged time and position that touch-control takes place, when the accuracy that conference influences the detecting of this optical touch control apparatus 60 is crossed in light (as sunshine or the other light sources) brightness in the external world, therefore the optical touch control apparatus 60 at this embodiment more comprises a secondary light source 606, this secondary light source 606 can be visible light (as conventional bulb) or invisible light (as infrared ray) equally, the purpose of installing this secondary light source 606 is to strengthen the display effect of the shade 612 of object 608, and then promotes the accuracy of sensor 604 inductions.Because the touch-control of the optical touch control apparatus 60 among Fig. 6 mechanism is all similar to the above embodiments, so its detailed description repeats no more.
In addition, need to prove that optical touch control method of the present invention can also be applied on the projecting display, as shown in Figure 7 at this.Projecting display 702 is incident upon image on the screen 704 (or wall), and inductor 706 can be arranged on the position that is adjacent to projecting display 702, when user's hand 708 (or pointer) demonstrates shade 710 on screen 704 (or wall), and then detect touch point 712.So when the size of display device increased, optical touch control apparatus of the present invention need not increase the circuit component of contactor control device because size becomes big, and then increases cost.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. optical touch control method is characterized in that it may further comprise the steps:
One shade of one object is provided by one first light source; And
According to the wide variety of this shade, judge a touch position and the touching time point of this object in a display device.
2. optical touch control method according to claim 1 is characterized in that wherein this method more comprises the wide variety of judging this shade of this object by a sensor, and then determines this touch position and this touching time point of this object in this display device.
3. optical touch control method according to claim 1, it is characterized in that wherein that this method more comprises provides a secondary light source in order to strengthening this shade of this object, and then the accuracy of promoting this optical touch control method.
4. optical touch control method according to claim 1 is characterized in that wherein said optical touch control method can be applicable to multi-point touch.
5. optical touch control method according to claim 1, it is characterized in that wherein said this method the width size of this shade near zero or when equalling zero, be judged to be this position and this time point of this display device of touching of this object.
6. optical touch control apparatus is characterized in that it comprises:
One first light source; And
One sensor, this sensor by the shade width that this first light source produces, are judged a position and a time point of this object touch-control one display device according to an object.
7. optical touch control apparatus according to claim 6 is characterized in that wherein said sensor judges the wide variety of this shade of this object, and then determines this object to touch this position and this time point of this display device.
8. optical touch control apparatus according to claim 6 is characterized in that wherein said device more comprises a secondary light source in order to strengthening this shade of this object, and then promotes the accuracy that this optical touch is sent out method.
9. optical touch control apparatus according to claim 6 is characterized in that wherein said optical touch control apparatus is a multipoint mode optical touch control apparatus.
10. optical touch control apparatus according to claim 6 is characterized in that wherein said optical touch control apparatus can be applicable to a switchgear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101364998A CN101887325A (en) | 2009-05-13 | 2009-05-13 | Optical touch control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101364998A CN101887325A (en) | 2009-05-13 | 2009-05-13 | Optical touch control method and device thereof |
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| Publication Number | Publication Date |
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| CN101887325A true CN101887325A (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101364998A Pending CN101887325A (en) | 2009-05-13 | 2009-05-13 | Optical touch control method and device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049853A (en) * | 2013-03-11 | 2014-09-17 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN104049807B (en) * | 2013-03-11 | 2017-11-28 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
-
2009
- 2009-05-13 CN CN2009101364998A patent/CN101887325A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049853A (en) * | 2013-03-11 | 2014-09-17 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN104049807B (en) * | 2013-03-11 | 2017-11-28 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
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Open date: 20101117 |