CN103631445B - 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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- CN103631445B CN103631445B CN201210300803.XA CN201210300803A CN103631445B CN 103631445 B CN103631445 B CN 103631445B CN 201210300803 A CN201210300803 A CN 201210300803A CN 103631445 B CN103631445 B CN 103631445B
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Abstract
The present invention provides a kind of optical touch control system and optical touch control method, and described optical touch control method comprises: provide bright background at least one side of touch-control surface in the first period; Touch-control surface is provided illuminating ray by the 2nd period; In the first period, acquisition comprises the first image of indicator shaded portions bright background; And acquisition comprises the 2nd image of indicator non-luminouslighting light in the 2nd period. The present invention, when multi-point touch, still can accurately obtain the exact amount of indicator and each indicator position relative to touch-control surface.
Description
Technical field
The present invention relates to a kind of optical touch control technical field, particularly relate to a kind of optical touch control system and optical touch control method.
Background technology
A kind of optical touch control system is had to adopt two Image sensor apparatus to carry out touch sensing at present. Described Image sensor apparatus is in order to the image of the touch-control surface of sensor light touch-control system. Therefore, when there being an indicator above-mentioned touch-control surface of vicinity, optical touch control system just can calculate the position of this indicator relative to touch-control surface according to the indicator image (namely light covers a little) in institute's sensing image.
But, it is adjacent to touch-control surface when there being two indicators, and the allocation position of these two indicators makes in the image that Image sensor apparatus wherein senses, an indicator image is had to cover another indicator image, and then when making two indicator Image compounding (merge) that this Image sensor apparatus senses together, optical touch control system will be caused cannot to calculate the position of these two indicators relative to touch-control surface.
Summary of the invention
The present invention provides a kind of optical touch control system, and 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 luminous elements, two Image sensor apparatus, two means of illumination and process circuit. The shape of described touch-control surface be tetragon have sequentially connect first side, second side, the 3rd side and four side. Described three luminous elements are configured in first side, second side and the 3rd side respectively, and these luminous elements are all in order to luminous in the first period. Described two Image sensor apparatus are configured in four side and intersection, first side respectively, and four side and the 3rd side intersection. Described two means of illumination are configured near above-mentioned two Image sensor apparatus respectively, or are configured in respectively in above-mentioned two Image sensor apparatus. These means of illumination in order to luminous in the 2nd period, to irradiate touch-control surface. As for described process circuit, it is electrically connected above-mentioned Image sensor apparatus, and obtain the first image and the 2nd image respectively in order to survey touch-control surface by above-mentioned Image sensor apparatus sense in the first period, and in the 2nd period, survey touch-control surface by above-mentioned Image sensor apparatus sense and obtain the 3rd image and the 4th image respectively.
The present invention also proposes a kind of optical touch control system, and it includes touch-control surface, two luminous elements, reflecting element, two Image sensor apparatus, two means of illumination and processes circuit. The shape of described touch-control surface be tetragon have sequentially connect first side, second side, the 3rd side and four side. Described two luminous elements are configured in first side and the 3rd side respectively, and these luminous elements 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 four side and intersection, first side respectively, and four side and the 3rd side intersection. Described two means of illumination are configured near above-mentioned two Image sensor apparatus respectively, or are configured in respectively in above-mentioned two Image sensor apparatus. These means of illumination in order to luminous in the 2nd period, to irradiate touch-control surface. As for described process circuit, it is electrically connected above-mentioned Image sensor apparatus, and obtain the first image and the 2nd image respectively in order to survey touch-control surface by above-mentioned Image sensor apparatus sense in the first period, and in the 2nd period, survey touch-control surface by above-mentioned Image sensor apparatus sense and obtain the 3rd image and the 4th image respectively.
The present invention proposes a kind of optical touch control system again, and it includes touch-control surface, at least one Image sensor apparatus, background luminescence element and means of illumination. Described background luminescence element carries out luminescence in order at least one side in touch-control surface in the first period, produces bright background with in the image that captures at Image sensor apparatus. And described means of illumination in order to provide illuminating ray to touch-control surface in the 2nd period. Wherein, described Image sensor apparatus captures the first image comprising indicator shaded portions bright background in the first period, and acquisition comprises the 2nd image of this indicator non-luminouslighting light in the 2nd period.
The present invention proposes again a kind of optical touch control method again, and it includes the following step: provide bright background at least one side of touch-control surface in the first period; Touch-control surface is provided illuminating ray by the 2nd period; In the first period, acquisition comprises the first image of indicator shaded portions bright background; And acquisition comprises the 2nd image of this indicator non-luminouslighting light in the 2nd period.
The present invention solves the mode of foregoing problems, is adopt at least one luminous element, at least one means of illumination and at least one Image sensor apparatus to build optical touch control system. Described luminous element 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 produces bright background in the image sensed at Image sensor apparatus. And described means of illumination in order to provide illuminating ray to touch-control surface in the 2nd period so that the indicator being arranged in touch-control surface can non-luminouslighting light. Therefore, Image sensor apparatus can be felt survey touch-control surface in above-mentioned two periods and obtain two images respectively. When there being the contiguous touch-control surface of at least two indicators, in the image sensed in the first period at Image sensor apparatus, indicator image presents light and covers a little, and indicator image can the bright background of shaded portions. And now, in the image sensed in the 2nd period at Image sensor apparatus, indicator image presents reflective spot. Like this, just can utilize above-mentioned each light cover a little with the marginal information of above-mentioned each reflective spot to judge the exact amount of indicator, and calculate the position of each indicator relative to touch-control surface further. From the above, optical touch control system of the present invention, when multi-point touch, still can accurately obtain the exact amount of indicator and each indicator position relative to touch-control surface.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to the technique means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and in order to above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by better embodiment, and coordinate accompanying drawing, it is described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the optical touch control system according to one embodiment of the invention.
Fig. 2 A be single indicator do not press optical touch control system touch-control surface time the schematic diagram of image that senses.
The schematic diagram of the image that Fig. 2 B senses when being the touch-control surface of single indicator presses optical touch control system.
Fig. 3 is the schema of the working method of the optical touch control system according to one embodiment of the invention.
Fig. 4 is the schematic diagram of the optical touch control system according to another embodiment of the present invention.
Fig. 5 is the schema of the working method of the optical touch control system according to another embodiment of the present invention.
Fig. 6 is the schematic diagram of the optical touch control system according to another embodiment of the present invention.
Fig. 7 is the schema of the optical touch control method according to one embodiment of the invention.
Embodiment
Technique means and effect that predetermined goal of the invention is taked is reached for further setting forth the present invention, below in conjunction with accompanying drawing and better embodiment, to the optical touch control system proposed according to the present invention and its embodiment of optical touch control method, method, step, structure, feature and effect, it is described in detail as follows.
Fig. 1 is the schematic diagram of the optical touch control system according to one embodiment of the invention. Please refer to Fig. 1, this optical touch control system 100 comprises touch-control surface 110, luminous element 120-1, luminous element 120-2, luminous element 120-3, Image sensor apparatus 130-1, Image sensor apparatus 130-2, means of illumination 140-1, means of illumination 140-2 and process circuit 150. The shape of touch-control surface 110 is that tetragon has four sides (respectively as Suo Shi label 110-1 ~ 110-4) sequentially connected. Above-mentioned three luminous elements are configured in side 110-1,110-2 and 110-3 respectively, and these luminous elements are in order to luminous in the first period. In this embodiment, these three luminous element 120-1,120-2 and 120-3 all can replace to lead optical element (lightguideelement), as long as each leads the light beam that optical element can receive external light source and send. 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, means of illumination 140-1 and 140-2 is configured near above-mentioned two Image sensor apparatus respectively, or is configured in respectively in above-mentioned two Image sensor apparatus. In this embodiment, means of illumination 140-1 and 140-2 is configured near above-mentioned two Image sensor apparatus respectively. These two means of illumination in order to luminous in the 2nd period, to irradiate touch-control surface 110. As for process circuit 150, it is electrically connected Image sensor apparatus 130-1 and 130-2, and surveys touch-control surface 110 in order to be felt by Image sensor apparatus 130-1 and 130-2 in above-mentioned first period and obtain two images respectively. In addition, process circuit 150 also to survey touch-control surface 110 in order to be felt by Image sensor apparatus 130-1 and 130-2 in above-mentioned 2nd period and obtain two other image respectively. Certainly, process circuit 150 also can be arranged in Image sensor apparatus 130-1, or is arranged in Image sensor apparatus 130-2.
Therefore, when processing circuit 150 and detected at least one indicator (as shown in label 106-1 and 160-2) vicinity touch-control surface 110, process circuit 150 just can cover a little according to the light in two images acquired by the first period, and the marginal information of the reflective spot in two images acquired by the 2nd period, judge the exact amount of indicator, and calculate the position of each indicator relative to touch-control surface 110 further.
For the allocation position of indicator (as shown in label 160-1 and the 160-2) quantity cited by Fig. 1 and these two indicators. In the first period, the image that Image sensor apparatus 130-2 senses can have two light and cover a little, and the image that Image sensor apparatus 130-1 senses then only can have a light and cover a little. And in the 2nd period, two images that Image sensor apparatus 130-1 and 130-2 senses respectively will have two reflective spots, but two reflective spots in the image that Image sensor apparatus 130-1 senses partly overlap, thus there is one of them image edge (being in the reflective spot that indicator 160-1 is formed in this embodiment, the image edge of the reflective spot that contiguous indicator 160-2 is formed) of one of them reflective spot in the region of these two reflective spot overlaps. Therefore, according to above situation, process circuit 150 just can judge to have the contiguous touch-control surface 110 of two indicators, and can calculate the position of each indicator relative to touch-control surface 110 further.
Expansion, if when having two indicators vicinity touch-control surface 110, one of them of two images sensed in the first period as Image sensor apparatus 130-1 and 130-2 has two light and covers a little, and another image only tool light cover a little, and Image sensor apparatus 130-1 and 130-2 has two reflective spots separately at two images that the 2nd period sensed, but two reflective spots that one of them image has partly overlap, thus when there is a wherein image edge of one of them reflective spot in the region of these two reflective spot overlaps, process circuit 150 just can judge to have the contiguous touch-control surface 110 of two indicators.
Certainly, if the allocation position of aforementioned two indicators is got when relatively opening or be very open (namely distant), so Image sensor apparatus 130-1 and 130-2 just can have two light separately at two images that the first period sensed and covers a little, and Image sensor apparatus 130-1 and 130-2 also can have two reflective spots separately at two images that the 2nd period sensed. Therefore, according to above situation, process circuit 150 just can directly judge to have the contiguous touch-control surface 110 of two indicators.
From the above, when performing multi-point touch, optical touch control system 100 of the present invention still can judge the exact amount of indicator, and calculates the position of each indicator relative to touch-control surface 110 further. In addition, optical touch control system 100 of the present invention also has an advantage, is exactly that it can avoid, when performing single-point touch, the erroneous judgement problem that existing optical touch control system can occur occurs. Hereinafter with Fig. 2 A and Fig. 2 B, aforesaid erroneous judgement problem will be described further.
Fig. 2 A be single indicator do not press optical touch control system touch-control surface time the schematic diagram of image that senses, and the schematic diagram of the image sensed when Fig. 2 B is the touch-control surface of single indicator presses optical touch control system. In Fig. 2 A and 2B, label 202 is referred to that region is the bright background formed by the luminous element of optical touch control system, and label 204 is referred to that region is then that the light caused by indicator covers a little. Three discontinuous parts are become, respectively as shown in label 202-1 ~ 202-3 compared to the bright background 202 shown in bright background 202, Fig. 2 B shown in Fig. 2 A. This is because when indicator presses touch-control surface, touch-control surface can be subject to pressure and be out of shape (such as pushed and swell). Like this, bright background 202 also can some (as shown in label 202-2) up be raised (namely bright background 202 deforms). In addition, also having a kind of situation, exactly when user only holds wherein one end of touch-control surface, touch-control surface just can be out of shape because of gravity, causes bright background 202 also can and then be out of shape. Therefore, when existing optical touch control system only can go to judge that having how much light in bright background 202 covers point, the indicator quantity being positioned at touch-control surface will be mistaken for two.
Referring again to Fig. 1. The 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 indicator, and this indicator is not when pressing touch-control surface 110, so Image sensor apparatus 130-1 and 130-2 all only can have a light at two images that the first period sensed and covers a little, and Image sensor apparatus 130-1 and 130-2 all only can have a reflective spot at two images that the 2nd period sensed. Therefore, process circuit 150 and just can judge now only there is the contiguous touch-control surface 110 of an indicator according to such situation. When only having the contiguous touch-control surface 110 of single indicator, and during this indicator presses touch-control surface 110, so Image sensor apparatus 130-1 and 130-2 may have at least two light separately at two images that the first period sensed and covers a little, but Image sensor apparatus 130-1 and 130-2 all only can have a reflective spot at two images that the 2nd period sensed. Therefore, process circuit 150 and still can judge now only there is an indicator contact touch-control surface 110 according to such situation.
It is worth mentioning that, above-mentioned process circuit 150 can be more be electrically connected above-mentioned three luminous elements and above-mentioned two means of illumination, to light these luminous elements in the first period and to close these means of illumination, and in the 2nd period, light these means of illumination and close these luminous elements. In addition, each means of illumination above-mentioned all can adopt infrared illumination device or laser launching device. So should be noted that, when each means of illumination above-mentioned all adopts infrared illumination device, each Image sensor apparatus so above-mentioned is preferably the infrared rays filtering apparatus adopting and infrared rays can only being allowed to pass through, and each Image sensor apparatus captures the image of touch-control surface 110 by its infrared rays filtering apparatus.
The instruction of optical touch control system 100 and derivative each embodiment thereof according to Fig. 1, some basic operational steps of this area has ordinary technical knowledge person can summarize aforementioned optical touch-control system 100, as shown in Figure 3. Fig. 3 is the schema of the working method of the optical touch control system according to one embodiment of the invention. Please refer to Fig. 3, described optical touch control system includes touch-control surface, three luminous elements, two Image sensor apparatus and two means of illumination. The shape of described touch-control surface be tetragon have sequentially connect first side, second side, the 3rd side and four side. Described luminous element is configured in first side, second side and the 3rd side respectively, and these luminous elements are in order to luminous in the first period. Described two Image sensor apparatus are configured in four side and intersection, first side respectively, and four side and the 3rd side intersection. And described means of illumination is configured near above-mentioned two Image sensor apparatus respectively, or it is configured in respectively in above-mentioned two Image sensor apparatus, and these means of illumination are in order to luminous in the 2nd period, to irradiate touch-control surface.
Described working method includes the following step: surveys touch-control surface by above-mentioned Image sensor apparatus sense in the first period and obtains the first image and the 2nd image (as shown in step s 302) respectively; 2nd period surveys touch-control surface by above-mentioned Image sensor apparatus sense and obtains the 3rd image and the 4th image (as shown in step S304) respectively; And when having detected at least one indicator vicinity touch-control surface, just cover a little according to the light in the first image and the 2nd image, and the 3rd marginal information of reflective spot in image and the 4th image, judge the exact amount of indicator, and calculate the position (as shown in step S306) of each indicator relative to touch-control surface further.
Fig. 4 is the schematic diagram of the optical touch control system according to another embodiment of the present invention. Please refer to Fig. 4, this optical touch control system 400 comprises touch-control surface 410, luminous element 420-1, luminous element 420-2, reflecting element 425, Image sensor apparatus 430-1, Image sensor apparatus 430-2, means of illumination 440-1, means of illumination 440-2 and process circuit 450. The shape of touch-control surface 310 is that tetragon has four sides (respectively as Suo Shi label 410-1 ~ 410-4) sequentially connected. Above-mentioned two luminous elements are configured in side 410-1 and 410-3 respectively, and these luminous elements 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 the diagram, in addition the part of dotted line less than 470 is the mirror image that reflecting element 425 is presented on touch-control surface 410. Image sensor apparatus 430-1 is configured in side 410-4 and 410-1 intersection, and Image sensor apparatus 430-2 is then configured in side 410-4 and 410-3 intersection.
In addition, means of illumination 440-1 and 440-2 is configured near above-mentioned two Image sensor apparatus respectively, or is configured in respectively in above-mentioned two Image sensor apparatus. In this embodiment, means of illumination 440-1 and 440-2 is configured near above-mentioned two Image sensor apparatus respectively. These two means of illumination in order to luminous in the 2nd period, to irradiate touch-control surface 410. As for process circuit 450, it is electrically connected Image sensor apparatus 430-1 and 430-2, and surveys touch-control surface 410 in order to be felt by Image sensor apparatus 430-1 and 430-2 in above-mentioned first period and obtain two images respectively. In addition, process circuit 450 also to survey touch-control surface 410 in order to be felt by Image sensor apparatus 430-1 and 430-2 in above-mentioned 2nd period and obtain two other image respectively.
Therefore, when processing circuit 450 and detected at least one indicator (as shown in label 460-1 and 460-2) vicinity touch-control surface 410, process circuit 450 just can according to the relative position of the reflective spot in two images acquired by the 2nd period in image, judge in the middle of the indicator image in two images acquired by the first period, which has be the image of mirror image (as shown in label 460-3 and 460-4) of indicator.
For the allocation position of indicator (as shown in label 460-1 and the 460-2) quantity cited by Fig. 4 and these two indicators. In the first period, two images that Image sensor apparatus 430-1 and 430-2 senses all can have four light and cover a little, and these four light cover the circuit 450 that a little all can be processed as being indicator image. But, in the 2nd period, two images that Image sensor apparatus 430-1 and 430-2 senses all only can have two reflective spots, therefore processing circuit 450 can according to the relative position of the reflective spot in these two images in image, judge in the middle of the indicator image in two images that the first period sensed, which has be the image of mirror image of indicator. The reason why can so done, is because only actual indicator just can produce reflective, therefore can judge with reflective spot. Certainly, after having judged, process circuit 450 also can calculate the position of each indicator relative to touch-control surface 410 according to the image of the image of indicator itself and the mirror image of indicator further.
It is worth mentioning that, above-mentioned process circuit 450 more can be electrically connected above-mentioned two luminous elements and above-mentioned two means of illumination, to light these luminous elements in the first period and to close these means of illumination, and in the 2nd period, light these means of illumination and close these luminous elements. In addition, each means of illumination above-mentioned all can adopt infrared illumination device or laser launching device. But should be noted that, when each means of illumination above-mentioned all adopts infrared illumination device, each Image sensor apparatus so above-mentioned is preferably to adopt has the infrared rays filtering apparatus that infrared rays can only be allowed to pass through, and each Image sensor apparatus captures the image of touch-control surface 410 by its infrared rays filtering apparatus.
The instruction of optical touch control system 400 and derivative each embodiment thereof according to Fig. 4, some basic operational steps of this area has ordinary technical knowledge person can summarize aforementioned optical touch-control system 400, as shown in Figure 5. Fig. 5 is the schema of the working method of the optical touch control system according to another embodiment of the present invention. Please refer to Fig. 5, described optical touch control system comprises touch-control surface, two luminous elements, reflecting element, two Image sensor apparatus and two means of illumination. The shape of described touch-control surface be tetragon have sequentially connect first side, second side, the 3rd side and four side. Described luminous element is configured in first side and the 3rd side respectively, and these luminous elements are in order to luminous in the first period. Described reflecting element is configured in second side. Described Image sensor apparatus is configured in four side and intersection, first side respectively, and four side and the 3rd side intersection. And described means of illumination is configured near above-mentioned two Image sensor apparatus respectively, or it is configured in respectively in above-mentioned two Image sensor apparatus, and these means of illumination are in order to luminous in the 2nd period, to irradiate touch-control surface.
And described working method includes the following step: survey touch-control surface by above-mentioned Image sensor apparatus sense in the first period and obtain the first image and the 2nd image (as shown in step S502) respectively; 2nd period surveys touch-control surface by above-mentioned Image sensor apparatus sense and obtains the 3rd image and the 4th image (as shown in step S504) respectively; And when having detected at least one indicator vicinity touch-control surface, just according to the relative position of the reflective spot in the 3rd image and the 4th image in image, judge in the middle of the indicator image in the first image and the 2nd image, which has be the image (as shown in step S506) of mirror image of indicator.
Fig. 6 is the schematic diagram of the optical touch control system according to 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 means of illumination 640. Described background luminescence element 630 carries out luminescence in order at least one side in touch-control surface 610 in the first period, produces bright background with in the image that captures at Image sensor apparatus 620. Means of illumination 640 in order to provide illuminating ray to touch-control surface 610 in the 2nd period. Wherein, Image sensor apparatus 620 captures the image comprising indicator 660 shaded portions bright background in the first period, and acquisition comprises the image of this indicator 660 non-luminouslighting light in the 2nd period.
In this embodiment, background luminescence element 630 can adopt three light guide modules (as Suo Shi label 630-1 ~ 630-3) to realize, as long as these three light guide modules are configured in wherein three sides of touch-control surface 610. In addition, light guide module 630-2 can adopt reflecting element to substitute. That is, background luminescence element 630 can be comprise the light guide module of at least one side being arranged on touch-control surface 610 and be arranged on the reflecting element of at least one other side of touch-control surface 610. In addition, this area has ordinary technical knowledge, and person should learn, even if optical touch control system 600 adopts at least two Image sensor apparatus, also still can realize the present invention.
Instruction according to the various embodiments described above, this area has ordinary technical knowledge, and person can summarize optical touch control method. Fig. 7 is the schema of the optical touch control method according to one embodiment of the invention. Described optical touch control method includes the following step: provide bright background (as shown in step S702) at least one side of touch-control surface in the first period; Touch-control surface is provided illuminating ray (as shown in step S704) by the 2nd period; In the first period, acquisition comprises first image (as shown in step S706) of indicator shaded portions bright background; And acquisition comprises the 2nd image (as shown in step S708) of this indicator non-luminouslighting light in the 2nd period.
In sum, the present invention solves the mode of foregoing problems, is adopt at least one luminous element, at least one means of illumination and at least one Image sensor apparatus to build optical touch control system. Described luminous element 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 produces bright background in the image sensed at Image sensor apparatus. And described means of illumination in order to provide illuminating ray to touch-control surface in the 2nd period so that the indicator being arranged in touch-control surface can non-luminouslighting light. Therefore, Image sensor apparatus can be felt survey touch-control surface in above-mentioned two periods and obtain two images respectively. When there being the contiguous touch-control surface of at least two indicators, in the image sensed in the first period at Image sensor apparatus, indicator image presents light and covers a little, and indicator image can the bright background of shaded portions. And now, in the image sensed in the 2nd period at Image sensor apparatus, indicator image presents reflective spot. Like this, just can utilize above-mentioned each light cover a little with the marginal information of above-mentioned each reflective spot to judge the exact amount of indicator, and calculate the position of each indicator relative to touch-control surface further. From the above, optical touch control system of the present invention, when multi-point touch, still can accurately obtain the exact amount of indicator and each indicator position relative to touch-control surface.
The above, it it is only the better embodiment of the present invention, not the present invention is done any restriction in form, although the present invention discloses as above with better embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or it is modified to the equivalent embodiment of equivalent variations, in every case it is do not depart from technical solution of the present invention content, the any simple modification above embodiment done according to the 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, comprising:
Touch-control surface, shape be tetragon have sequentially connect first side, second side, the 3rd side and four side;
Three luminous elements, are configured in this first side, this second side and the 3rd side respectively, and those luminous elements are in order to luminous in the first period;
Two Image sensor apparatus, are configured in this four side and this intersection, first side respectively, and this four side and the 3rd side intersection, and those Image sensor apparatus are configured in this touch-control surface respectively;
Two means of illumination, are configured near these two Image sensor apparatus respectively, or are configured in these two Image sensor apparatus respectively, those means of illumination in order to luminous in the 2nd period, to irradiate this touch-control surface; And
Process circuit, it is electrically connected those Image sensor apparatus, in order to survey this touch-control surface and obtain the first image and the 2nd image respectively by those Image sensor apparatus senses in this first period, and survey this touch-control surface and obtain the 3rd image and the 4th image respectively by those Image sensor apparatus senses in the 2nd period.
2. optical touch control system according to claim 1, it is characterized in that, when this process circuit detecting is to when having at least one indicator to be close to this touch-control surface, this process circuit just covers a little according to the light in this first image and the 2nd image, and the 3rd marginal information of reflective spot in image and the 4th image, judge the exact amount of indicator, and calculate the position of each indicator relative to this touch-control surface further.
3. optical touch control system according to claim 2, it is characterized in that, cover a little when this first image and the 2nd image respectively have two light, and when the 3rd image and the 4th image respectively have two reflective spots, this process circuit just judges to have two indicators these touch-control surface contiguous.
4. optical touch control system according to claim 2, it is characterized in that, cover a little when one of them of this first image and the 2nd image has two light, and this first image and the 2nd image wherein another only tool light cover a little, and the 3rd image and the 4th image respectively there are two reflective spots, but when the 3rd image region overlapping with one of them two reflective spot having of the 4th image has a wherein image edge of one of them reflective spot, this process circuit just judges to have two indicators these touch-control surface contiguous.
5. optical touch control system according to claim 2, it is characterized in that, cover a little when this first image and the 2nd image all only have a light, and when the 3rd image and the 4th image all only have a reflective spot, this process circuit just judges only there is an indicator this touch-control surface contiguous.
6. optical touch control system according to claim 1, it is characterized in that, this process circuit is more electrically connected those luminous elements and those means of illumination, to light those luminous elements in this first period and to close those means of illumination, and in the 2nd period, light those means of illumination and close those luminous elements.
7. optical touch control system according to claim 1, it is characterized in that, each means of illumination is infrared illumination device or laser launching device, and when each means of illumination is infrared illumination device, then those Image sensor apparatus all have the infrared rays filtering apparatus that infrared rays can only be allowed to pass through, and each Image sensor apparatus captures the image of this touch-control surface by its infrared rays filtering apparatus.
8. an optical touch control system, is characterized in that, comprising:
Touch-control surface, shape be tetragon have sequentially connect first side, second side, the 3rd side and four side;
Two luminous elements, are configured in this first side and the 3rd side respectively, and those luminous elements are in order to luminous in the first period;
Reflecting element, is configured in this second side;
Two Image sensor apparatus, are configured in this four side and this intersection, first side respectively, and this four side and the 3rd side intersection, and those Image sensor apparatus are configured in this touch-control surface respectively;
Two means of illumination, are configured near these two Image sensor apparatus respectively, or are configured in these two Image sensor apparatus respectively, those means of illumination in order to luminous in the 2nd period, to irradiate this touch-control surface; And
Process circuit, it is electrically connected those Image sensor apparatus, in order to survey this touch-control surface and obtain the first image and the 2nd image respectively by those Image sensor apparatus senses in this first period, and survey this touch-control surface and obtain the 3rd image and the 4th image respectively by those Image sensor apparatus senses in the 2nd period.
9. optical touch control system according to claim 8, it is characterized in that, when this process circuit detecting is to when having at least one indicator to be close to this touch-control surface, this process circuit is just according to the relative position of the reflective spot in the 3rd image and the 4th image in image, judge in the middle of the indicator image in this first image and the 2nd image, which has be the image of mirror image of indicator.
10. optical touch control system according to claim 8, it is characterized in that, this process circuit is more electrically connected those luminous elements and those means of illumination, to light those luminous elements in this first period and to close those means of illumination, and in the 2nd period, light those means of illumination and close those luminous elements.
11. optical touch control systems according to claim 8, it is characterized in that, each means of illumination is infrared illumination device or laser launching device, and when each means of illumination is infrared illumination device, then those Image sensor apparatus all have the infrared rays filtering apparatus that infrared rays can only be allowed to pass through, and each Image sensor apparatus is the image being captured this touch-control surface by its infrared rays filtering apparatus.
12. 1 kinds of optical touch control systems, is characterized in that, comprising:
Touch-control surface;
At least one Image sensor apparatus, this Image sensor apparatus is configured in this touch-control surface;
Background luminescence element, carries out luminescence in order at least one side in this touch-control surface in the first period, produces bright background with in the image that captures at this Image sensor apparatus; And
Means of illumination, in order to provide illuminating ray to this touch-control surface in the 2nd period;
Wherein, this at least one Image sensor apparatus captures the first image comprising indicator this bright background of shaded portions in this first period, and acquisition comprises the 2nd image that this indicator reflects this illuminating ray in the 2nd period.
13. optical touch control systems according to claim 12, is characterized in that, this background luminescence element is the light guide module of wherein three sides being 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 being arranged on this touch-control surface and is arranged on the reflecting element of at least one other side of this touch-control surface.
15. 1 kinds of optical touch control methods, it is applicable to an optical touch control system, this optical touch control system have a touch-control surface comprising four sides, at least one in order to bright background is provided and be configured at the luminescence component of those sides, at least one is configured in this touch-control surface and is configured at the Image sensor apparatus of those side intersections and at least one is in order to the means of illumination providing illuminating ray and be configured at those side intersections, it is characterized in that, comprising:
One first period provided bright background at least one side of this touch-control surface;
This touch-control surface is provided illuminating ray by one the 2nd period;
In this first period, acquisition comprises one first image of indicator this bright background of shaded portions; And
In the 2nd period, acquisition comprises one the 2nd image that this indicator reflects this illuminating ray.
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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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| CN201210300803.XA CN103631445B (en) | 2012-08-22 | 2012-08-22 | Optical touch control system and optical touch control method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4455392B2 (en) * | 2005-04-15 | 2010-04-21 | キヤノン株式会社 | Coordinate input device, control method therefor, and program |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN103631445A (en) | 2014-03-12 |
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