CN103631445A - Optical touch control system and optical touch control method - Google Patents
Optical touch control system and optical touch control method Download PDFInfo
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- CN103631445A CN103631445A CN201210300803.XA CN201210300803A CN103631445A CN 103631445 A CN103631445 A CN 103631445A CN 201210300803 A CN201210300803 A CN 201210300803A CN 103631445 A CN103631445 A CN 103631445A
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Abstract
The invention provides an optical touch control system and an optical touch control method. The optical touch control method includes the steps that in a first time frame, bright backgrounds are supplied to at least one side edge of a touch control surface; in a second time frame, illumination light is supplied to the touch control surface; a first image including the bright backgrounds of shielded parts of referents is captured in the first time frame; a second image including the reflection illumination light of the referents is captured in the second time frame. Under the condition of multi-point touch control, the true number of the referents and the position of each referent relevant to the touch control surface can be precisely acquired.
Description
Technical field
The present invention relates to a kind of optical touch control technical field, relate in particular to a kind of optical touch control system and optical touch control method.
Background technology
There is at present a kind of optical touch control system to adopt two Image sensor apparatus to carry out touch sensing.Described Image sensor apparatus is in order to the image of the touch-control surface of sensing optical touch control system.Therefore,, when having the contiguous above-mentioned touch-control surface of an indicant, optical touch control system just can calculate this indicant with respect to the position of touch-control surface according to the indicant image in institute's sensing image (being light grazing point).
Yet, when there being two indicants to be adjacent to touch-control surface, and the allocation position of these two indicants makes therein in image that an Image sensor apparatus senses, there is an indicant image to cover another indicant image, and then while making two indicant images synthetic (merge) that this Image sensor apparatus senses together, will cause optical touch control system cannot calculate these two indicants with respect to the position of touch-control surface.
Summary of the invention
The invention provides a kind of optical touch control system, it can solve foregoing problems.
The present invention separately provides a kind of optical touch control method, and it can solve foregoing problems.
The present invention proposes a kind of optical touch control system, and it includes touch-control surface, three light-emitting components, two Image sensor apparatus, two lighting devices and treatment circuit.Being shaped as quadrilateral of described touch-control surface and there is sequentially first side, second side, the 3rd side and the four side connecting.Described three light-emitting components are configured in respectively first side, second side and the 3rd side, and these light-emitting components are all in order to luminous in the first period.Described two Image sensor apparatus are configured in respectively four side and intersection, first side, and four side and the 3rd side intersection.Described two lighting devices are configured in respectively near above-mentioned two Image sensor apparatus, or are configured in respectively in above-mentioned two Image sensor apparatus.These lighting devices are in order to luminous in the second period, to irradiate touch-control surface.As for described treatment circuit, it is electrically connected above-mentioned Image sensor apparatus, and in order to obtain respectively the first image and the second image by above-mentioned Image sensor apparatus sensing touch-control surface in the first period, and by above-mentioned Image sensor apparatus sensing touch-control surface, obtain respectively the 3rd image and the 4th image in the second period.
The present invention also proposes a kind of optical touch control system, and it includes touch-control surface, two light-emitting components, reflecting element, two Image sensor apparatus, two lighting devices and treatment circuit.Being shaped as quadrilateral of described touch-control surface and there is sequentially first side, second side, the 3rd side and the four side connecting.Described two light-emitting components are configured in respectively first side and the 3rd side, and these light-emitting components are in order to luminous in the first period.Described reflecting element is configured in second side.Described two Image sensor apparatus are configured in respectively four side and intersection, first side, and four side and the 3rd side intersection.Described two lighting devices are configured in respectively near above-mentioned two Image sensor apparatus, or are configured in respectively in above-mentioned two Image sensor apparatus.These lighting devices are in order to luminous in the second period, to irradiate touch-control surface.As for described treatment circuit, it is electrically connected above-mentioned Image sensor apparatus, and in order to obtain respectively the first image and the second image by above-mentioned Image sensor apparatus sensing touch-control surface in the first period, and by above-mentioned Image sensor apparatus sensing touch-control surface, obtain respectively the 3rd image and the 4th image in the second period.
The present invention reintroduces a kind of optical touch control system, and it includes touch-control surface, at least one Image sensor apparatus, background luminescence element and lighting device.Described background luminescence element is luminous in order to carry out at least one side of touch-control surface in the first period, to produce bright background in the image Image sensor apparatus was captured.And described lighting device in order to provide illuminating ray to touch-control surface in the second period.Wherein, described Image sensor apparatus captures the first image that comprises indicant shaded portions bright background in the first period, and the second image that acquisition comprises this indicant indirect illumination light in the second period.
The present invention reintroduces again a kind of optical touch control method, and it includes the following step: at least one side in touch-control surface in the first period provides bright background; In the second period, to touch-control surface, provide illuminating ray; The first image that acquisition comprises indicant shaded portions bright background in the first period; And the second image that acquisition comprises this indicant indirect illumination light in the second period.
The present invention solves the mode of foregoing problems, is to adopt at least one light-emitting component, at least one lighting device and at least one Image sensor apparatus to build optical touch control system.Described light-emitting component is arranged at least one side of the touch-control surface of optical touch control system, and in order to luminous in the first period, and then produce bright background in the image sensing at Image sensor apparatus.And described lighting device is in order to provide illuminating ray to touch-control surface in the second period, the indicant that makes to be arranged in touch-control surface can indirect illumination light.Therefore, Image sensor apparatus can be in above-mentioned two periods sensing touch-control surface and obtain respectively two images.When having the contiguous touch-control surface of at least two indicants, in the image sensing in the first period at Image sensor apparatus, indicant image presents light grazing point, and the bright background that indicant image can shaded portions.And now, in the image sensing in the second period at Image sensor apparatus, indicant image presents reflective spot.Like this, just can utilize the marginal information of above-mentioned each light grazing point and above-mentioned each reflective spot to judge the true quantity of indicant, and further calculate each indicant with respect to the position of touch-control surface.From the above, optical touch control system of the present invention, under the condition of multi-point touch, still can accurately be obtained the true quantity of indicant and each indicant with respect to the position of touch-control surface.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to the optical touch control system of one embodiment of the invention.
Fig. 2 A be single indicant do not press optical touch control system touch-control surface time the image that senses schematic diagram.
The schematic diagram of the image that Fig. 2 B senses while being the touch-control surface of single indicator presses optical touch control system.
Fig. 3 is the process flow diagram according to the method for operating of the optical touch control system of one embodiment of the invention.
Fig. 4 is the schematic diagram according to the optical touch control system of another embodiment of the present invention.
Fig. 5 is the process flow diagram according to the method for operating of the optical touch control system of another embodiment of the present invention.
Fig. 6 is the schematic diagram according to the optical touch control system of another embodiment of the present invention.
Fig. 7 is the process flow diagram according to the optical touch control method of one embodiment of the invention.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, optical touch control system and its embodiment of optical touch control method, method, step, structure, feature and effect to proposing according to the present invention, be described in detail as follows.
Fig. 1 is the schematic diagram according to the optical touch control system of one embodiment of the invention.Please refer to Fig. 1, this optical touch control system 100 comprises touch-control surface 110, light-emitting component 120-1, light-emitting component 120-2, light-emitting component 120-3, Image sensor apparatus 130-1, Image sensor apparatus 130-2, lighting device 140-1, lighting device 140-2 and treatment circuit 150.Being shaped as quadrilateral of touch-control surface 110 and there are sequentially four sides (respectively as shown in label 110-1 ~ 110-4) that connect.Above-mentioned three light-emitting components are configured in respectively side 110-1,110-2 and 110-3, and these light-emitting components are in order to luminous in the first period.In this embodiment, these three light-emitting component 120-1,120-2 and 120-3 all can replace with light-guide device (light guide element), as long as each light-guide device can receive the light beam that external light source sends.Image sensor apparatus 130-1 is configured in side 110-4 and 110-1 intersection, and Image sensor apparatus 130-2 is configured in side 110-4 and 110-3 intersection.
In addition, lighting device 140-1 and 140-2 are configured in respectively near above-mentioned two Image sensor apparatus, or are configured in respectively in above-mentioned two Image sensor apparatus.In this embodiment, lighting device 140-1 and 140-2 are configured in respectively near above-mentioned two Image sensor apparatus.These two lighting devices are in order to luminous in the second period, to irradiate touch-control surface 110.As for treatment circuit 150, it is electrically connected Image sensor apparatus 130-1 and 130-2, and in order to obtain respectively two images by Image sensor apparatus 130-1 and 130-2 sensing touch-control surface 110 in above-mentioned the first period.In addition, treatment circuit 150 also in order in above-mentioned the second period by Image sensor apparatus 130-1 and 130-2 sensing touch-control surface 110 and obtain respectively two other image.Certainly, treatment circuit 150 also can be arranged in Image sensor apparatus 130-1, or is arranged in Image sensor apparatus 130-2.
Therefore, when treatment circuit 150 has detected the contiguous touch-control surface 110 of at least one indicant (as shown in label 106-1 and 160-2), treatment circuit 150 just can be according to the light grazing point in obtained two images of the first period, and the marginal information of the reflective spot in obtained two images of the second period, judge the true quantity of indicant, and further calculate each indicant with respect to the position of touch-control surface 110.
Indicant (as shown in label 160-1 and the 160-2) quantity that the Fig. 1 of take is cited and the allocation position of these two indicants are example.In the first period, the image that Image sensor apparatus 130-2 senses can have two light grazing points, and the image that Image sensor apparatus 130-1 senses only can have a light grazing point.And in the second period, each will have two reflective spots two images that Image sensor apparatus 130-1 and 130-2 sense, but two reflective spots in the image that Image sensor apparatus 130-1 senses partly overlap, thereby in these two overlapping regions of reflective spot, there is one of them image edge (being in the formed reflective spot of indicant 160-1 at this embodiment, the image edge of the formed reflective spot of contiguous indicant 160-2) of one of them reflective spot.Therefore,, according to above situation, treatment circuit 150 just can have been judged the contiguous touch-control surface 110 of two indicants, and can further calculate each indicant with respect to the position of touch-control surface 110.
Expansion, if while having the contiguous touch-control surface 110 of two indicants, one of them of two images that sense in the first period as Image sensor apparatus 130-1 and 130-2 has two light grazing points, and another image light grazing point of tool only, and two images that Image sensor apparatus 130-1 and 130-2 sensed in the second period have two reflective spots separately, but two reflective spots that one of them image has partly overlap, thereby while thering is a wherein image edge of one of them reflective spot in these two overlapping regions of reflective spot, treatment circuit 150 just can have been judged the contiguous touch-control surface 110 of two indicants.
Certainly, if the allocation position of aforementioned two indicants is got while opening or being very open (distant), two images that Image sensor apparatus 130-1 and 130-2 sensed in the first period so just can have two light grazing points separately, and two images that Image sensor apparatus 130-1 and 130-2 sensed in the second period also can have two reflective spots separately.Therefore,, according to above situation, treatment circuit 150 just can directly have been judged the contiguous touch-control surface 110 of two indicants.
From the above, in the situation that carrying out multi-point touch, optical touch control system 100 of the present invention still can be judged the true quantity of indicant, and further calculates each indicant with respect to the position of touch-control surface 110.In addition, optical touch control system 100 of the present invention also has an advantage, is exactly that it can be avoided when carrying out single-point touch, existing optical touch control system occurs and understand the erroneous judgement problem occurring.Below will further illustrate aforesaid erroneous judgement problem with Fig. 2 A and Fig. 2 B.
Fig. 2 A be single indicant do not press optical touch control system touch-control surface time the image that senses schematic diagram, and the schematic diagram of the image that Fig. 2 B senses while being the touch-control surface of single indicator presses optical touch control system.In Fig. 2 A and 2B, label 202 indication regions are the formed bright background of light-emitting component by optical touch control system, and label 204 indication regions are the light grazing points being caused by indicant.Compared to the bright background 202 shown in Fig. 2 A, the bright background 202 shown in Fig. 2 B becomes discontinuous three parts, respectively as shown in label 202-1 ~ 202-3.This is because when indicator presses touch-control surface, and touch-control surface can be under pressure and be out of shape (for example pushed and swell).Like this, bright background 202 also can some (as shown in label 202-2) up be raised (being that bright background 202 deforms).In addition, also have a kind of situation, when user only holds wherein one end of touch-control surface, touch-control surface just can be out of shape because of gravity exactly, causes bright background 202 also can and then be out of shape.Therefore,, the in the situation that of thering is how much light grazing point in existing optical touch control system only can go to judge bright background 202, the indicant quantity that is positioned at touch-control surface will be mistaken for to two.
Referring again to Fig. 1.Optical touch control system 100 of the present invention is just without this problem.When only having the contiguous touch-control surface 110 of single indicant, and when this indicant is not pressed touch-control surface 110, two images that Image sensor apparatus 130-1 and 130-2 sensed in the first period so all only can have a light grazing point, and two images that Image sensor apparatus 130-1 and 130-2 sensed in the second period all only can have a reflective spot.Therefore, treatment circuit 150 just can be judged and now only have the contiguous touch-control surface 110 of an indicant according to such situation.When only having the contiguous touch-control surface 110 of single indicant, and during this indicator presses touch-control surface 110, two images that Image sensor apparatus 130-1 and 130-2 sensed in the first period so may have at least two light grazing points separately, but two images that Image sensor apparatus 130-1 and 130-2 sensed in the second period all only can have a reflective spot.Therefore, treatment circuit 150 still can be judged and now only have an indicant contact touch-control surface 110 according to such situation.
It is worth mentioning that, above-mentioned treatment circuit 150 can be to be more electrically connected above-mentioned three light-emitting components and above-mentioned two lighting devices, to light these light-emitting components and close these lighting devices in the first period, and in the second period, light these lighting devices and close these light-emitting components.In addition, above-mentioned each lighting device all can adopt infrared illumination device or laser emitter.So should be noted that, when above-mentioned each lighting device all adopts infrared illumination device, so above-mentioned each Image sensor apparatus is preferably the infrared ray filtering apparatus that employing can only allow infrared ray pass through, and each Image sensor apparatus captures the image of touch-control surface 110 by its infrared ray filtering apparatus.
According to the instruction of optical touch control system shown in Fig. 1 100 and derivative each embodiment thereof, this area has ordinary skill and knows that the knowledgeable can summarize some basic operational steps of aforementioned optical touch control system 100, as shown in Figure 3.Fig. 3 is the process flow diagram according to the method for operating of the optical touch control system of one embodiment of the invention.Please refer to Fig. 3, described optical touch control system includes touch-control surface, three light-emitting components, two Image sensor apparatus and two lighting devices.Being shaped as quadrilateral of described touch-control surface and there is sequentially first side, second side, the 3rd side and the four side connecting.Described light-emitting component is configured in respectively first side, second side and the 3rd side, and these light-emitting components are in order to luminous in the first period.Described two Image sensor apparatus are configured in respectively four side and intersection, first side, and four side and the 3rd side intersection.And described lighting device is configured in respectively near above-mentioned two Image sensor apparatus, or be configured in respectively in above-mentioned two Image sensor apparatus, and these lighting devices are in order to luminous in the second period, to irradiate touch-control surface.
Described method of operating includes the following step: in the first period, by above-mentioned Image sensor apparatus sensing touch-control surface, obtain respectively the first image and the second image (as shown in step S302); In the second period, by above-mentioned Image sensor apparatus sensing touch-control surface, obtain respectively the 3rd image and the 4th image (as shown in step S304); And when having detected the contiguous touch-control surface of at least one indicant, just according to the light grazing point in the first image and the second image, and the marginal information of the 3rd reflective spot in image and the 4th image, judge the true quantity of indicant, and further calculate each indicant with respect to the position (as shown in step S306) of touch-control surface.
Fig. 4 is the schematic diagram according to the optical touch control system of another embodiment of the present invention.Please refer to Fig. 4, this optical touch control system 400 comprises touch-control surface 410, light-emitting component 420-1, light-emitting component 420-2, reflecting element 425, Image sensor apparatus 430-1, Image sensor apparatus 430-2, lighting device 440-1, lighting device 440-2 and treatment circuit 450.Being shaped as quadrilateral of touch-control surface 310 and there are sequentially four sides (respectively as shown in label 410-1 ~ 410-4) that connect.Above-mentioned two light-emitting components are configured in respectively side 410-1 and 410-3, and these light-emitting components are in order to luminous in the first period.Reflecting element 425 is configured in side 410-2.In this embodiment, reflecting element 425 can adopt reflective mirror.In addition,, in Fig. 4, the part of dotted line below 470 is the mirror image of reflecting element 425 touch-control surface that is presented on 410.Image sensor apparatus 430-1 is configured in side 410-4 and 410-1 intersection, and Image sensor apparatus 430-2 is configured in side 410-4 and 410-3 intersection.
In addition, lighting device 440-1 and 440-2 are configured in respectively near above-mentioned two Image sensor apparatus, or are configured in respectively in above-mentioned two Image sensor apparatus.In this embodiment, lighting device 440-1 and 440-2 are configured in respectively near above-mentioned two Image sensor apparatus.These two lighting devices are in order to luminous in the second period, to irradiate touch-control surface 410.As for treatment circuit 450, it is electrically connected Image sensor apparatus 430-1 and 430-2, and in order to obtain respectively two images by Image sensor apparatus 430-1 and 430-2 sensing touch-control surface 410 in above-mentioned the first period.In addition, treatment circuit 450 also in order in above-mentioned the second period by Image sensor apparatus 430-1 and 430-2 sensing touch-control surface 410 and obtain respectively two other image.
Therefore, when treatment circuit 450 has detected the contiguous touch-control surface 410 of at least one indicant (as shown in label 460-1 and 460-2), treatment circuit 450 just can be according to the reflective spot in obtained two images of the second period the relative position in image, judge that in the middle of the indicant image in obtained two images of the first period, which has is the image of the mirror image (as shown in label 460-3 and 460-4) of indicant.
Indicant (as shown in label 460-1 and the 460-2) quantity that the Fig. 4 of take is cited and the allocation position of these two indicants are example.In the first period, two images that Image sensor apparatus 430-1 and 430-2 sense all can have four light grazing points, and these four light grazing points all can be processed circuit 450 as being indicant image.Yet, in the second period, two images that Image sensor apparatus 430-1 and 430-2 sense all only can have two reflective spots, therefore treatment circuit 450 can be according to the reflective spot in these two images the relative position in image, judge in the middle of the indicant image in two images that sense in the first period, which has is the image of the mirror image of indicant.The reason that why can so do is reflective because only have actual indicant just can produce, therefore can judge with reflective spot.Certainly, after having judged, treatment circuit 450 also can be further calculates each indicant with respect to the position of touch-control surface 410 according to the image of the image of indicant itself and the mirror image of indicant.
It is worth mentioning that, above-mentioned treatment circuit 450 more can be electrically connected above-mentioned two light-emitting components and above-mentioned two lighting devices, to light these light-emitting components and close these lighting devices in the first period, and in the second period, light these lighting devices and close these light-emitting components.In addition, above-mentioned each lighting device all can adopt infrared illumination device or laser emitter.Yet should be noted that, when above-mentioned each lighting device all adopts infrared illumination device, so above-mentioned each Image sensor apparatus is preferably to adopt has the infrared ray filtering apparatus that can only allow infrared ray pass through, and each Image sensor apparatus captures the image of touch-control surface 410 by its infrared ray filtering apparatus.
According to the instruction of optical touch control system shown in Fig. 4 400 and derivative each embodiment thereof, this area has ordinary skill and knows that the knowledgeable can summarize some basic operational steps of aforementioned optical touch control system 400, as shown in Figure 5.Fig. 5 is the process flow diagram according to the method for operating of the optical touch control system of another embodiment of the present invention.Please refer to Fig. 5, described optical touch control system comprises touch-control surface, two light-emitting components, reflecting element, two Image sensor apparatus and two lighting devices.Being shaped as quadrilateral of described touch-control surface and there is sequentially first side, second side, the 3rd side and the four side connecting.Described light-emitting component is configured in respectively first side and the 3rd side, and these light-emitting components are in order to luminous in the first period.Described reflecting element is configured in second side.Described Image sensor apparatus is configured in respectively four side and intersection, first side, and four side and the 3rd side intersection.And described lighting device is configured in respectively near above-mentioned two Image sensor apparatus, or be configured in respectively in above-mentioned two Image sensor apparatus, and these lighting devices are in order to luminous in the second period, to irradiate touch-control surface.
And described method of operating includes the following step: obtain respectively the first image and the second image (as shown in step S502) by above-mentioned Image sensor apparatus sensing touch-control surface in the first period; In the second period, by above-mentioned Image sensor apparatus sensing touch-control surface, obtain respectively the 3rd image and the 4th image (as shown in step S504); And when having detected the contiguous touch-control surface of at least one indicant, just the relative position in image according to the reflective spot in the 3rd image and the 4th image, judge in the middle of the indicant image in the first image and the second image, which has is the image (as shown in step S506) of the mirror image of indicant.
Fig. 6 is the schematic diagram according to the optical touch control system of another embodiment of the present invention.Please refer to Fig. 6, this optical touch control system 600 comprises touch-control surface 610, Image sensor apparatus 620, background luminescence element 630 and lighting device 640.Described background luminescence element 630 is luminous in order to carry out at least one side of touch-control surface 610 in the first period, to produce bright background in the image being captured at Image sensor apparatus 620.Lighting device 640 in order to provide illuminating ray to touch-control surface 610 in the second period.Wherein, Image sensor apparatus 620 captures the image that comprises indicant 660 shaded portions bright background in the first period, and the image that acquisition comprises these indicant 660 indirect illumination light in the second period.
In this embodiment, background luminescence element 630 can adopt three light guide modules (as shown in label 630-1 ~ 630-3) to realize, as long as these three light guide modules are configured in to wherein three sides of touch-control surface 610.In addition, light guide module 630-2 can adopt reflecting element to substitute.That is to say, background luminescence element 630 can be to comprise the light guide module of at least one side that is arranged on touch-control surface 610 and the reflecting element that is arranged at least one other side of touch-control surface 610.In addition, this area has ordinary skill and knows that the knowledgeable should learn, even if optical touch control system 600 adopts at least two Image sensor apparatus, also still can realize the present invention.
According to the instruction of the various embodiments described above, this area has ordinary skill and knows that the knowledgeable can summarize optical touch control method.Fig. 7 is the process flow diagram according to the optical touch control method of one embodiment of the invention.Described optical touch control method includes the following step: at least one side in touch-control surface in the first period provides bright background (as shown in step S702); In the second period, to touch-control surface, provide illuminating ray (as shown in step S704); The first image (as shown in step S706) that acquisition comprises indicant shaded portions bright background in the first period; And the second image (as shown in step S708) that acquisition comprises this indicant indirect illumination light in the second period.
In sum, the present invention solves the mode of foregoing problems, is to adopt at least one light-emitting component, at least one lighting device and at least one Image sensor apparatus to build optical touch control system.Described light-emitting component is arranged at least one side of the touch-control surface of optical touch control system, and in order to luminous in the first period, and then produce bright background in the image sensing at Image sensor apparatus.And described lighting device is in order to provide illuminating ray to touch-control surface in the second period, the indicant that makes to be arranged in touch-control surface can indirect illumination light.Therefore, Image sensor apparatus can be in above-mentioned two periods sensing touch-control surface and obtain respectively two images.When having the contiguous touch-control surface of at least two indicants, in the image sensing in the first period at Image sensor apparatus, indicant image presents light grazing point, and the bright background that indicant image can shaded portions.And now, in the image sensing in the second period at Image sensor apparatus, indicant image presents reflective spot.Like this, just can utilize the marginal information of above-mentioned each light grazing point and above-mentioned each reflective spot to judge the true quantity of indicant, and further calculate each indicant with respect to the position of touch-control surface.From the above, optical touch control system of the present invention, under the condition of multi-point touch, still can accurately be obtained the true quantity of indicant and each indicant with respect to the position of touch-control surface.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (15)
1. an optical touch control system, is characterized in that, it comprises:
Touch-control surface, is shaped as quadrilateral and has sequentially first side, second side, the 3rd side and the four side connecting;
Three light-emitting components, are configured in respectively ,Gai second side, this first side and the 3rd side, and those light-emitting components are in order to luminous in the first period;
Two Image sensor apparatus, are configured in respectively this four side and this intersection, first side, and this four side and the 3rd side intersection;
Two lighting devices, are configured in respectively near these two Image sensor apparatus, or are configured in respectively in these two Image sensor apparatus, and those lighting devices are in order to luminous in the second period, to irradiate this touch-control surface; And
Treatment circuit, be electrically connected those Image sensor apparatus, in order to obtain respectively the first image and the second image by those these touch-control surface of Image sensor apparatus sensing in this first period, and by those these touch-control surface of Image sensor apparatus sensing, obtain respectively the 3rd image and the 4th image in this second period.
2. optical touch control system according to claim 1, it is characterized in that, when this treatment circuit has detected contiguous this touch-control surface of at least one indicant, this treatment circuit is just according to the light grazing point in this first image and this second image, and the marginal information of the 3rd reflective spot in image and the 4th image, judge the true quantity of indicant, and further calculate each indicant with respect to the position of this touch-control surface.
3. optical touch control system according to claim 2, it is characterized in that, when this first image and this second image respectively have two light grazing points, and the 3rd image and the 4th image be while respectively having two reflective spots, and this treatment circuit just judges contiguous these touch-control surface of two indicants.
4. optical touch control system according to claim 2, it is characterized in that, when one of them of this first image and this second image has two light grazing points, and wherein another light grazing point of tool only of this first image and this second image, and the 3rd image and the 4th image respectively have two reflective spots, but when the overlapping region of two reflective spots that one of them of the 3rd image and the 4th image has has a wherein image edge of one of them reflective spot, this treatment circuit just judges contiguous this touch-control surface of two indicants.
5. optical touch control system according to claim 2, it is characterized in that, when this first image and this second image all only have a light grazing point, and the 3rd image and the 4th image be while all only having a reflective spot, and this treatment circuit just judges only contiguous this touch-control surface of an indicant.
6. optical touch control system according to claim 1, it is characterized in that, this treatment circuit is more electrically connected those light-emitting components and those lighting devices, to light those light-emitting components and close those lighting devices in this first period, and in this second period, light those lighting devices and close those light-emitting components.
7. optical touch control system according to claim 1, it is characterized in that, each lighting device is infrared illumination device or laser emitter, and when each lighting device is infrared illumination device, those Image sensor apparatus all have the infrared ray filtering apparatus that can only allow infrared ray pass through, and each Image sensor apparatus captures the image of this touch-control surface by its infrared ray filtering apparatus.
8. an optical touch control system, is characterized in that, it comprises:
Touch-control surface, is shaped as quadrilateral and has sequentially first side, second side, the 3rd side and the four side connecting;
Two light-emitting components, are configured in respectively this first side and the 3rd side, and those light-emitting components are in order to luminous in the first period;
Reflecting element, is configured in this second side;
Two Image sensor apparatus, are configured in respectively this four side and this intersection, first side, and this four side and the 3rd side intersection;
Two lighting devices, are configured in respectively near these two Image sensor apparatus, or are configured in respectively in these two Image sensor apparatus, and those lighting devices are in order to luminous in the second period, to irradiate this touch-control surface; And
Treatment circuit, be electrically connected those Image sensor apparatus, in order to obtain respectively the first image and the second image by those these touch-control surface of Image sensor apparatus sensing in this first period, and by those these touch-control surface of Image sensor apparatus sensing, obtain respectively the 3rd image and the 4th image in this second period.
9. optical touch control system according to claim 8, it is characterized in that, when this treatment circuit has detected contiguous this touch-control surface of at least one indicant, this treatment circuit is the relative position in image according to the reflective spot in the 3rd image and the 4th image just, judge in the middle of the indicant image in this first image and this second image, which has is the image of the mirror image of indicant.
10. optical touch control system according to claim 8, it is characterized in that, this treatment circuit is more electrically connected those light-emitting components and those lighting devices, to light those light-emitting components and close those lighting devices in this first period, and in this second period, light those lighting devices and close those light-emitting components.
11. optical touch control systems according to claim 8, it is characterized in that, each lighting device is infrared illumination device or laser emitter, and when each lighting device is infrared illumination device, those Image sensor apparatus all have the infrared ray filtering apparatus that can only allow infrared ray pass through, and each Image sensor apparatus is by its infrared ray filtering apparatus, to capture the image of this touch-control surface.
12. 1 kinds of optical touch control systems, is characterized in that, it comprises:
Touch-control surface;
At least one Image sensor apparatus;
Background luminescence element, luminous in order to carry out at least one side of this touch-control surface in the first period, to produce bright background in the image this Image sensor apparatus was captured; And
Lighting device, in order to provide illuminating ray to this touch-control surface in the second period;
Wherein, this at least one Image sensor apparatus captures the first image that comprises this bright background of indicant shaded portions in this first period, and acquisition comprises the second image that this indicant reflects this illuminating ray in this second period.
13. optical touch control systems according to claim 12, is characterized in that, this background luminescence element is the wherein light guide module of three sides that is arranged on this touch-control surface.
14. optical touch control systems according to claim 12, is characterized in that, this background luminescence element comprises the light guide module of at least one side that is arranged on this touch-control surface and the reflecting element that is arranged at least one other side of this touch-control surface.
15. 1 kinds of optical touch control methods, is characterized in that, it comprises:
At least one side in touch-control surface in the first period provides bright background;
In the second period, to this touch-control surface, provide illuminating ray;
The first image that acquisition comprises this bright background of indicant shaded portions in this first period; And
In this second period, acquisition comprises the second image that this indicant reflects this illuminating ray.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210300803.XA CN103631445B (en) | 2012-08-22 | 2012-08-22 | Optical touch control system and optical touch control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210300803.XA CN103631445B (en) | 2012-08-22 | 2012-08-22 | Optical touch control system and optical touch control method |
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| CN103631445A true CN103631445A (en) | 2014-03-12 |
| CN103631445B CN103631445B (en) | 2016-06-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060232568A1 (en) * | 2005-04-15 | 2006-10-19 | Canon Kabushiki Kaisha | Coordinate input apparatus, control method thereof, and program |
| CN101174191A (en) * | 2007-11-05 | 2008-05-07 | 广东威创视讯科技股份有限公司 | Touch panel device and its locating method |
| CN101477427A (en) * | 2008-12-17 | 2009-07-08 | 卫明 | Contact or non-contact type infrared laser multi-point touch control apparatus |
-
2012
- 2012-08-22 CN CN201210300803.XA patent/CN103631445B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060232568A1 (en) * | 2005-04-15 | 2006-10-19 | Canon Kabushiki Kaisha | Coordinate input apparatus, control method thereof, and program |
| CN101174191A (en) * | 2007-11-05 | 2008-05-07 | 广东威创视讯科技股份有限公司 | Touch panel device and its locating method |
| CN101477427A (en) * | 2008-12-17 | 2009-07-08 | 卫明 | Contact or non-contact type infrared laser multi-point touch control apparatus |
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| CN103631445B (en) | 2016-06-08 |
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