CN104252270A - Electronic equipment - Google Patents
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- CN104252270A CN104252270A CN201410379237.5A CN201410379237A CN104252270A CN 104252270 A CN104252270 A CN 104252270A CN 201410379237 A CN201410379237 A CN 201410379237A CN 104252270 A CN104252270 A CN 104252270A
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Abstract
The invention relates to electronic equipment comprising a portable optical touch system, an electronic device and a display screen. The portable optical touch system comprises a first image sensing module, a second image sensing module, an adjustable length connector, a communication interface and a processing circuit. Sensing ranges of the two image sensing modules are partially overlapped; an overlap area is used for defining a touch area. The adjustable length connector is used for connecting the first image sensing module and the second image sensing module and adjusting a distance between the first image sensing module and the second image sensing module. When an object is in the touch area, the processing circuit calculates coordinates of the object according to an image of the object sensed by the two image sensing modules and outputting the coordinates through the communication interface.
Description
Technical field
The present invention relates to the technology in touch-control field, and particularly relate to a kind of electronic installation.
Background technology
Fig. 1 is the stereographic map of existing a kind of optical touch control system.Please refer to Fig. 1, optical touch control system 100 includes panel 104, image sensing module 106 and 108, treatment circuit 110, reflection subassembly 112, reflection subassembly 114 and reflection subassembly 116.In addition, the quadrilateral area of label 118 indication in figure is in order to the touch area as optical touch control system 100, and image sensing module 106 and 108 is arranged on the different corner of two of above-mentioned touch area 118, makes the sensing range of these two image sensing modules can contain touch area 118 respectively.In this instance, the shape of touch area 118 is quadrilateral, and is preferably rectangle.And label 102 in figure refer to an object.
In these components of optical touch control system 100, reflection subassembly 112, reflection subassembly 114 with reflection subassembly 116 by retro-reflection material (retro-reflective material) is formed, all in order to be reflexed in touch area 118 by incident ray (as infrared light).Image sensing module 106 and 108 is all in order to capture the image in touch area 118.Treatment circuit 110 then in order to receive image sensing module 106 and 108 the image that captures, and according to image sensing module 106 and 108 the image that captures to calculate the coordinate of the object 102 in image relative to touch area 118.
Fig. 2 is the key diagram that the optical touch control system of Fig. 1 carries out single-point touch.In fig. 2, label person identical with the label in Fig. 1 is expressed as identical components.As shown in Figure 2, image sensing module 106 can sense object 102 along sensing route 202, and image sensing module 108 then energy senses object 102 along sensing route 204.Therefore, as long as treatment circuit 110 can obtain the equation of line of both sensing routes 202 and 204, and calculate the intersection point of sensing route 202 and 204, just can obtain the coordinate of object 102.
To illustrate how optical touch control system 100 obtains the equation of line of both sensing routes 202 and 204 below, so this will first be described from the structure of image sensing module 106 and 108.
For image sensing module 106, its structure one as shown in Figure 3.Fig. 3 is the organigram of image sensing module 106.Please refer to Fig. 3, image sensing module 106 includes infrared light emission device 302, optical mirror slip group 304, the infrared light filtering apparatus 306 that infrared light can only be allowed to pass through and image sensor 308.Wherein, infrared light emission device 302 is in order to launch infrared light to irradiate touch area 118, reflection subassembly 112, reflection subassembly 114 and reflection subassembly 116, image sensor 308 then in order to sequentially to obtain the image in touch area 118 through infrared light filtering apparatus 306 and optical mirror slip group 304, to send the image obtained to treatment circuit 110.When object 102 is positioned at touch area 118, image sensing module 106 just can obtain the image containing object 102, as shown in Figure 4.
The schematic diagram of the image that Fig. 4 senses for image sensing module 106.In the diagram, namely the white portion of label 402 indication is launch because of infrared light emission device 302 light that Infrared irradiation reflection subassembly 114 and 116 reflects in image, form the higher clear zone of brightness (bright zone), and above-mentioned clear zone 402 is exactly main sensing area.And label 404 is exactly object 102 covers the dark space of causing in clear zone 402.
Known by Fig. 2 and Fig. 4, as long as treatment circuit 110 can learn center of gravity or the center of angle [alpha] (namely sensing the angle of route 202 and top, touch area 118) and dark space 404, the equation of line of sensing route 202 just can be calculated further.In like manner, treatment circuit 110 also can calculate the equation of line of sensing route 204 according to identical mode.And the coordinate of object 102 is the intersection point of sensing route 202 and 204.
This optical touch control system shown in Fig. 1 can perform the function for user's input interface of computing machine such as similar mouse, keyboard or Trackpad, allows user directly can perform input operation with finger.But because optical touch control system 100 must have the panel 104 of entity, reflection subassembly 112, reflection subassembly 114 to operate with reflection subassembly 116, therefore environment for use is restricted.Moreover entity panel 104, reflection subassembly 112, reflection subassembly 114 are not cheap with the price of reflection subassembly 116, the cost of this optical touch control system is remained high.In addition, because panel 104 has certain volume, and reflection subassembly 112, reflection subassembly 114 also have certain length with reflection subassembly 116, make the size of optical touch control system 100 cannot contract less and be easy to carry.
From aforementioned, environment for use, cost, volume and Portability are that existing optical touch control system 100 has problem to be solved.
Summary of the invention
In order to overcome the deficiency that existing touch-control system is not easy to carry, the invention provides a kind of electronic installation.
The present invention proposes a kind of electronic installation, and it comprises: Portable optical touch system, electronic installation, display screen.This Portable optical touch system includes the first image sensing module, the second image sensing module, adjustable in length coupling arrangement, communication interface and treatment circuit.The sensing range of above-mentioned two image sensing modules is that part overlaps, and the region that above-mentioned part overlaps is in order to define a touch area.Adjustable in length coupling arrangement connects the first image sensing module and the second image sensing module, in order to adjust the distance between the first image sensing module and the second image sensing module.When there being an object to be positioned at touch area, the image of the object that treatment circuit just senses according to above-mentioned two image sensing modules to calculate the coordinate of object, and exports described coordinate through communication interface.Electronic installation receives this coordinate through this communication interface, and this treatment circuit can pass through this communication interface and this electronic installation carries out communication; One cursor position of this display screen reflects the coordinate of this object.
The present invention separately proposes a kind of Portable optical touch system, and it includes the first image sensing module, the second image sensing module, coupling arrangement, communication interface and treatment circuit.The sensing range of above-mentioned two image sensing modules is that part overlaps, and the region that above-mentioned part overlaps is in order to define a touch area.Coupling arrangement connects the first image sensing module and the second image sensing module, and the distance wherein between the first image sensing module and the second image sensing module is predetermined length.When there being an object to be positioned at touch area, the image of the object that treatment circuit just senses according to above-mentioned two image sensing modules to calculate the coordinate of object, and exports described coordinate through communication interface.
The present invention proposes again a kind of portable optical contactor control device sensing at least one object space, and it includes the first image sensing module, the second image sensing module, treatment circuit and display screen.First image sensing module includes again the first image sensor, the first infrared light emission device, the first infrared light filtering apparatus and one first optical mirror slip group.Second image sensing module includes again the second image sensor, the second infrared light emission device, the second infrared light filtering apparatus and the second optical mirror slip group.Wherein, the sensing range of the first image sensing module and the second image sensing module is that part overlaps, and the region that part overlaps is in order to define a touch area.First infrared light emission device and the second infrared light emission device are in order to launch infrared light to irradiate the object being positioned at touch area.First image sensing module and the second image sensing module obtain the image of reflections off objects infrared light respectively respectively through the first infrared light filtering apparatus and the second infrared light filtering apparatus.First optical mirror slip group and the second optical mirror slip group are separately positioned on the first image sensor and the second image sensor front, are used for making the visual angle of corresponding image sensor present at least 90 degree.Treatment circuit calculates in order to the image of the object sensed according to above-mentioned two image sensing modules and exports the coordinate of object.As for display screen, its object coordinates exported in order to show also reaction treatment circuit.
The present invention reintroduces a kind of portable optical contactor control device sensing at least one object space, and it includes the first image sensing module, the second image sensing module, treatment circuit and display screen.First image sensing module includes again the first image sensor, the first optical mirror slip group, the first laser light emitter and the first optical mirror slip.Second image sensing module includes again the second image sensor, the second optical mirror slip group, the second laser light emitter and the second optical mirror slip.Wherein, the sensing range of the first image sensing module and the second image sensing module is that part overlaps, and the region that part overlaps is in order to define a touch area.First laser light emitter and the second laser light emitter are respectively in order to launch some laser light and to be converted to a line laser light to irradiate the object being positioned at touch area respectively through the first optical mirror slip and the second optical mirror slip respectively.First image sensor and the second image sensor are in order to obtain the image of reflections off objects line laser light respectively through the first optical mirror slip group and the second optical mirror slip group.First optical mirror slip group and the second optical mirror slip group are used for making the visual angle of corresponding image sensor present at least 90 respectively and spend.Treatment circuit calculates in order to the image of the object sensed according to above-mentioned two image sensing modules and exports the coordinate of object.As for display screen, its object coordinates exported in order to show also reaction treatment circuit.
The present invention also proposes a kind of method of sensing object position, and it is applicable to a Portable optical touch system.Described Portable optical touch system includes the first image sensing module, the second image sensing module, adjustable in length coupling arrangement, treatment circuit and communication interface.Wherein, the sensing range of above-mentioned two image sensing modules is that part overlaps, and the region that above-mentioned part overlaps is used for definition one touch area.Adjustable in length coupling arrangement connects the first image sensing module and the second image sensing module, in order to adjust the distance between the first image sensing module and the second image sensing module.Said method includes: above two image sensing module acquisitions are positioned at the image of the object of touch area; The image of the object captured according to above-mentioned two image sensing modules by treatment circuit is to calculate the coordinate of object; And the coordinate of object is exported by communication interface.
The present invention mainly adopts two image sensing modules and a treatment circuit to build a Portable optical touch system.In the design of reality, be that the sensing range part of two image sensing modules is overlapped, the region that above-mentioned part is overlapped can be used to definition one touch area.Thus, when there being an object to be positioned at touch area, the image of the object that treatment circuit just can sense according to these two image sensing modules is to calculate the coordinate of object.And in further design, two image sensing modules can be made to launch infrared lights or laser light with irradiating object, obtain the image of reflections off objects infrared light or laser light by this, allow treatment circuit can according to such image to calculate the coordinate of object.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the stereographic map of existing a kind of optical touch control system.
Fig. 2 is the key diagram that the optical touch control system of Fig. 1 carries out single-point touch.
Fig. 3 is the organigram of image sensing module 106.
The schematic diagram of the image that Fig. 4 senses for image sensing module 106.
Fig. 5 is the schematic perspective view of the Portable optical touch system according to one embodiment of the invention.
Fig. 6 is also the schematic perspective view of the Portable optical touch system shown in Fig. 5.
Fig. 7 is the schematic diagram in top down perspective of the Portable optical touch system shown in Fig. 5.
Fig. 8 is the side-looking perspective diagram of image sensing module 510.
Fig. 9 carries out the key diagram of single-point touch for the Portable optical touch system shown in Fig. 7.
Figure 10 is that treatment circuit 570 receives the image data of two image sensors 512 and 532 and the schematic diagram of subsequent treatment.
Figure 11 is object space in the image that senses of image sensor 512 and corresponding angle figure.
Figure 12 illustrates another set-up mode of the internals of image sensing module 510.
Figure 13 illustrates the account form in the visual field farthest.
Figure 14 illustrates improved Portable optical touch system 500.
Figure 15 illustrates the mouse function pattern that treatment circuit defines in touch area.
Figure 16 is the schematic diagram that Portable optical touch system of the present invention is arranged in the groove of electronic installation.
Figure 17 is the basic procedure of the method for sensing object position according to one embodiment of the invention.
100: optical touch control system 102,502: object
104: panel 106,108,510,530: image sensing module
110,570: treatment circuit 112,114,116: reflection subassembly
118: touch area 202,204,902,904: sensing route
402,1012,1022: clear zone 404: dark space
500: Portable optical touch system 5101,5301: housing
51011: Part I 51012: Part II
5101A: bottom surface 5102,5302: transmission region
512A: image capture face 302,518,538: infrared light emission device
304,516,536: optical mirror slip group 306,514,534: infrared light filtering apparatus
308,512,532: image sensor 582,584,586: dotted line
550: adjustable in length coupling arrangement 560: communication interface
590: touch area 802: real work surface
1010,1020: image 1014,1016,1024,1026: edge
1602: electronic installation A, B, E, F: point
D: visual field H farthest: highly
L, M, R: region S1702, S1704, S1706: step
5161,5162,520,5361,5362,540: optical mirror slip
1018,1028,1018A, 1018B, 1018C: the center of object, center of gravity or mean value
α, β, α 1, β 1, θ 1, θ 2, θ 3: angle
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of method of the Portable optical touch system proposed according to the present invention, the portable optical contactor control device that can sense at least one object space and sensing object position, structure, method (manufacture method, job operation), step, feature and effect thereof, be described in detail as follows.
First embodiment:
Fig. 5 is the schematic perspective view of the Portable optical touch system according to one embodiment of the invention, and Fig. 6 is also the schematic perspective view of the Portable optical touch system shown in Fig. 5, and Fig. 7 is the schematic diagram in top down perspective of the Portable optical touch system shown in Fig. 5.Please also refer to Fig. 5 and Fig. 7, above-mentioned Portable optical touch system 500 includes image sensing module 510, image sensing module 530, adjustable in length coupling arrangement 550, communication interface 560 and treatment circuit 570.Image sensing module 510 has housing 5101, and above-mentioned housing 5101 has transmission region 5102.Image sensing module 530 has housing 5301, and above-mentioned housing 5301 has transmission region 5302.Two ends of adjustable in length coupling arrangement 550 connect housing 5101 and 5301 respectively, in order to adjust the distance between image sensing module 510 and 530.
Adjustable in length coupling arrangement 550 can adopt the bar structure of multisection type Extensible or adopt rail structure to reach the function of adjustable in length, and right adjustable in length coupling arrangement 550 of the present invention does not limit the use of in above-mentioned two kinds of implementations.In addition, in this instance, communication interface 560 is a wire communication interface, such as, be USB (universal serial bus) (Universal Series Bus, USB) interface, but not as limit.And the specification of USB (universal serial bus) can be USB1.0, USB1.1, USB2.0 or USB 3.0.Please refer to Fig. 6, label person identical with the label in Fig. 5 is expressed as identical components.The length that Fig. 6 mainly illustrates adjustable in length coupling arrangement 550 can shorten to the situation that image sensing module 510 and 530 can be touched mutually, carries with person easy to use.
Please refer to Fig. 7, label person identical with the label in Fig. 5 is expressed as identical components, and label 502 is expressed as an object, the finger of such as user or lip pencil thing.In this instance, image sensing module 510 except there is housing 5101, the infrared light filtering apparatus 514 that also include image sensor 512, infrared light can only be allowed to pass through, the optical mirror slip group 516 be made up of optical mirror slip 5161 and 5162, infrared light emission device 518 and optical mirror slip 520.Wherein, image sensor 512 can be Charged Coupled Device (charge-coupled device, CCD) or CMOS image sensing component (CMOS image sensor).And the external form of image sensor 512 can be matrix form (Array) or linear forms (Linear).In addition, in this instance, the visual angle of image sensor 512 is about 30 ~ 45 degree, therefore image sensing module 510 must adopt optical mirror slip group 516 to be increased at the visual angle of image sensor 512 and be at least 90 degree, so that the region that the angle making the sensing range of image sensing module 510 be at least dotted line 582 and 584 is contained.And in optical mirror slip group 516, the visual angle at least 30 that each optical mirror slip can increase image sensor 512 is spent.
As for infrared light emission device 518, the region that the angle that its infrared light launched sequentially can irradiate dotted line 582 and 584 through optical mirror slip 520 and transmission region 5102 is contained, comprise object 502, make image sensor 512 can sequentially through infrared light filtering apparatus 514, optical mirror slip group 516 with transmission region 5102 to obtain the image after object 502 reflects infrared light.And this means, the image in the region that the angle that the shape of transmission region 5102 and size must be designed to allow image sensor 512 sense dotted line 582 and 584 is contained, simultaneously transmission region 5102 can not go to stop the direct of travel of the infrared light launched through optical mirror slip 520 to infrared light emission device 518 and any one position in infrared light cannot be irradiated to region that above-mentioned angle contains.
Similarly, image sensing module 530 except there is housing 5301, the infrared light filtering apparatus 534 that also include image sensor 532, infrared light can only be allowed to pass through, the optical mirror slip group 536 be made up of optical mirror slip 5361 and 5362, infrared light emission device 538 and optical mirror slip 540.In this instance, the visual angle of image sensor 532 is about 30 ~ 45 degree, therefore image sensing module 530 must adopt optical mirror slip group 536 to be increased at the visual angle of image sensor 532 and be at least 90 degree, so that the region that the angle making the sensing range of image sensing module 530 be at least dotted line 582 and 586 is contained.And in optical mirror slip group 536, the visual angle at least 30 that each optical mirror slip can increase image sensor 532 is spent.
As for infrared light emission device 538, the region that the angle that its infrared light launched sequentially can irradiate dotted line 582 and 586 through optical mirror slip 540 and transmission region 5302 is contained, comprise object 502, make image sensor 532 can sequentially through infrared light filtering apparatus 534, optical mirror slip group 536 with transmission region 5302 to obtain the image after object 502 reflects infrared light.And this means, the image in the region that the angle that the shape of transmission region 5302 and size must be designed to allow image sensor 532 sense dotted line 582 and 586 is contained, simultaneously transmission region 5302 can not go to stop the direct of travel of the infrared light launched through optical mirror slip 540 to infrared light emission device 538 and any one position in infrared light cannot be irradiated to region that above-mentioned angle contains.
The description of above is known, and the angle of dotted line 582 and 584 is about 90 degree, and the angle of dotted line 582 and 586 is also about 90 degree.Therefore, the sensing range of image sensing module 510 and 530 is that part overlaps, and the region that above-mentioned part overlaps is in order to define a touch area 590.In addition, from Fig. 7 and above-mentioned description also, image sensor 512 is arranged on dotted line 582 corner crossing with 584, and image sensor 532 is then be arranged on dotted line 582 corner crossing with 586.That is, image sensor 512 and 532 is two different corners being arranged on touch area 590.
Fig. 8 is the side-looking perspective diagram of image sensing module 510.In fig. 8, label person identical with the label in Fig. 5, Fig. 7 is expressed as identical components, and label 802 is then expressed as a real work surface.As shown in Figure 8, the image capture face 512A of the image sensor 512 and bottom surface 5101A of housing 5101 presents predetermined angle theta 1, and above-mentioned predetermined angle theta 1 is 90 degree.In addition, infrared light filtering apparatus 514, optical mirror slip group 516, infrared light emission device 518 (this figure does not illustrate) are also arranged along with above-mentioned predetermined angle theta 1 with optical mirror slip 520 (this figure does not illustrate).Because above-mentioned predetermined angle theta 1 is 90 degree, therefore the visual field (field of view) of image sensor 512 is infinity in theory, and the depth of field of image that namely image sensor 512 senses is infinity in theory.But practical situation is then depending on the physical restriction of environment and assembly itself.In addition, if the infrared luminous energy that infrared light emission device 518 is launched contains the visual field of image sensor 512, then when object 502 enters into the range of exposures of infrared light, just can reflects infrared light image sensor 512 be allowed to sense.
Similarly, the image sensor 532 in image sensing module 530, infrared light filtering apparatus 534, optical mirror slip group 536, infrared light emission device 538 and optical mirror slip 540 are also arranged in the mode shown in Fig. 8.
Referring again to Fig. 7.In this instance, treatment circuit 570 is arranged in the housing 5101 of image sensing module 510, and electric property coupling communication interface 560, image sensor 512 and image sensor 532.Therefore, when object 502 is positioned at touch area 590, image sensor 512 and 532 just can capture to obtain the image after object 502 reflects infrared light, and these image datas are directly passed to treatment circuit 570, or image data also can be carried out pre-process and obtain the characteristic (area of such as object image of image by image sensor 512 and 532, length breadth ratio, border, color, the parameters such as brightness) after, pass to treatment circuit 570 again, to alleviate the burden for the treatment of circuit 570, and treatment circuit 570 just calculates the coordinate of object 502 according to the characteristic of these image datas or image.Treatment circuit 570, after the coordinate obtaining object 502, just can pass through communication interface 560 and exports described coordinate to an electronic installation, such as, be export a mobile computer to, so that above-mentioned electronic installation comes further to operate according to described coordinate.Be described further to the adquisitiones of object coordinates again below.
Fig. 9 carries out the key diagram of single-point touch for the Portable optical touch system shown in Fig. 7.In fig .9, label person identical with the label in Fig. 7 is expressed as identical components.In addition, some A is expressed as the setting position of image sensor 512, and puts the setting position that B is expressed as image sensor 532.As shown in Figure 9, when object 502 is positioned at touch area 590, image sensor 512 just can sense object 502 along sensing route 902, and image sensor 532 then energy senses object 502 along sensing route 904.Therefore, as long as the image that treatment circuit 570 can sense according to image sensor 512,532 respectively obtains the equation of line of sensing route 902,904 respectively, just can calculate the intersection point of these two sensing routes further, and then obtain the coordinate of object 502.To image that how treatment circuit 570 sense according to these two image sensors be further illustrated to obtain the equation of line of above-mentioned two sensing routes below.
Figure 10 is that treatment circuit 570 receives the image data of two image sensors 512 and 532 and the schematic diagram of subsequent treatment.In Fig. 10, label 1010 is expressed as the image that image sensor 512 senses, label 1012 represents object 502 reflects infrared light and on image 1010, forms the higher clear zone of brightness (bright zone), label 1014 and 1016 represents left hand edge and the right hand edge in clear zone 1012 respectively, and label 1018 is expressed as the center (center) in clear zone 1012 (i.e. object image), center of gravity (gravity) or mean value (mean or average).Label 1014,1016 and 1018 is the characteristic about object 502 in image 1010.
Similarly, label 1020 is expressed as the image that image sensor 532 senses, label 1022 represents object 502 reflects infrared light and on image 1020, forms the higher clear zone of brightness, label 1024 and 1026 represents left hand edge and the right hand edge in clear zone 1022 respectively, and label 1028 is expressed as the center in clear zone 1022 (i.e. object image), center of gravity or mean value.Label 1024,1026 and 1028 is the characteristic about object 502 in image 1020.In addition, the further feature data of object 502, the parameter such as area, length breadth ratio, border, color, brightness of such as object image, also can be undertaken processing by treatment circuit 570 or by image sensor 512,532 to carry out pre-process.And the present embodiment tries to achieve these characteristics by treatment circuit 570.
Figure 11 is object space in the image that senses of image sensor 512 and corresponding angle figure.Hold above-mentioned, treatment circuit 570, after receiving image 1010, can calculate the center in clear zone 1012, center of gravity or mean value, and this i.e. the position of object 502 in image 1010.Please refer to Fig. 9, Figure 10 and Figure 11, for trying to achieve dotted line 582 and the angle α 1 of sensing route 902, image 1010 on average can be divided into some equal portions, such as 90 equal portions.Each equal portions represents angle 1 degree, so image 1010 right margin is angle 0 degree, and left margin is angle 90 degree.When the center of object, center of gravity or mean value drop in image 1010, namely may correspond to out the angle [alpha] 1 representated by this position.For example, it is 45 degree that 1018A represents angle [alpha] 1, and it is 30 degree that 1018B represents angle [alpha] 1, and it is 75 degree that 1018C represents angle [alpha] 1.If during corresponding angles angle value without just integer, available interpolation calculation.And same procedure also can try to achieve angle beta 1.
Please refer to Fig. 9, utilize known A point coordinate value and angle [alpha] 1, namely the oblique formula of utilisation point (point-slope form) tries to achieve the equation of line of sensing route 902; In like manner, B point coordinate value and angle beta 1 also can be utilized to try to achieve the equation of line of sensing route 904.Therefore, treatment circuit 570 just can calculate the intersection point of these two sensing routes, and then tries to achieve the coordinate of object 502.This object coordinates computing method are exactly so-called two line method of intersection.In addition, Portable optical touch system 500 also can adopt other method, and such as trigonometric function method calculates the coordinate of object 502, because said method has been widely used in existing optical touch control system, just repeats no more at this.In addition, the teaching of above, this area has knows that the knowledgeable is when knowing that above-mentioned Portable optical touch system 500 also can be used in multi-point touch (multi touch) usually.
In addition, in the visual field of image sensor 512 and 532 except object 502 to be measured, also other object may be there is at a distance in the visual field, and these objects also can reflected infrared and interfere with the touch control operation of optical touch control system 500, the brightness of the light that object therefore can be utilized to reflect is screened.For example (but not as limit), the predeterminable brightness threshold value for the treatment of circuit 570 or a brightness range, and the brightness value of each pixel (pixel) in the image captured by image sensor 512 and 532 carries out detection screens.If the brightness value of a pixel exceedes default brightness threshold value or drops in default brightness range, then the brightness value of above-mentioned pixel meets preset standard.Mode according to this, sequentially screens the brightness value of each pixel in image, then can other object beyond filtering object under test 502.
It is worth mentioning that, in the design of reality, aforesaid infrared light emission device 518 and 538 all can adopt at least one infrared light emitting diodes (IR LED) to realize; And aforesaid infrared light filtering apparatus 514 and 534 all can adopt an infrared light optical filter (IR-pass filter) to realize.The wavelength of the infrared light that infrared light emitting diodes sends is about 800nm ~ 960nm, is generally to use the infrared light emitting diodes that the wavelength of infrared light is 850nm.In addition, the visual angle due to general image sensor is 30 ~ 45 degree, and the optical mirror slip number therefore in optical mirror slip group 516 and 536 does suitable design when the visual angle that the visual angle of visible image sensor and each optical mirror slip can increase.Although and in this instance, treatment circuit 570 is arranged in the housing 5101 of image sensing module 510, and communication interface 560 is arranged on the housing 5101 of image sensing module 510, so this is only illustrate, and is not used to the allocation position limiting treatment circuit 570 and communication interface 560.In addition, the surface of aforesaid object 502 also can additionally adopt reflective material to improve reflecting effect.
In addition, communication interface 560 may also be a wireless communication interface, such as bluetooth (Blue Tooth) wireless transmission interface, radio universal serial bus (Wireless Universal Series Bus, Wireless USB) interface or ultra broadband (Ultra Wide Band, UWB) wave point.Even, communication interface 560 can adopt multiple wire communication interface and multiple wireless communication interface.
The explanation of above, the scope of known aforementioned touch area 590 can reach infinity in theory.But the size of touch area 590 still can limit by the mode of software.Referring again to Fig. 9, in touch area 590, the length on the limit formed by dotted line 582 is known, and the length ideal on two limits formed by dotted line 584 and 586 is all endless.For making the length on two limits formed by dotted line 584 and 586 be predetermined length, treatment circuit 570 can define different touch-control scopes according to different application occasion.For example, when this optical touch control system 500 is used as a virtual mouse, stool and urine so in the touch area 590 in image sensing module 510 and 530 front can be defined according to the use habit scope of user's application entity mouse, such as, be the touch-control scope being defined as 15cm × 15cm (i.e. dotted line 582 length × dotted line 584 length) size.Or, treatment circuit 570 can carry out the predetermined length of defining in real time dotted line 584 and 586 by the relation of the size of object image and distance, also above-mentioned predetermined length can be defined by the brightness of the reflected light of object image, or carry out the predetermined length of defining in real time dotted line 584 and 586 in conjunction with these two kinds of modes, and will build in the mode of definition in the middle of software or firmware that treatment circuit 570 adopts.Thus, touch area 590 just can present the quadrilateral touch-control scope that has predetermined area size.
Hold above-mentioned, when touch area 590 has predetermined area size, treatment circuit 570 first can calculate the coordinate of object 502, and then whether judgment object 502 is positioned at touch area 590.When object 502 is positioned at touch area 590, treatment circuit 570 just can export the coordinate of object 502 through communication interface 560.Certainly, treatment circuit 570 also can be the coordinate first calculating object 502, and export the coordinate of object 502 to aforesaid electronic installation through communication interface 560, with allow above-mentioned electronic installation voluntarily judgment object 502 whether be positioned at touch area 590, and then determine whether be used.
Second embodiment:
This example is mainly illustrating that Portable optical touch system 500 can be the restriction utilizing hardware, and make the visual field of image sensor 512 and 532 can change into limited distance by infinity, one as shown in figure 12.
Figure 12 illustrates another set-up mode of the internals of image sensing module 510.In fig. 12, label person identical with the label in Fig. 5 is expressed as identical components.As shown in figure 12, the image capture face 512A of the image sensor 512 and bottom surface 5101A of housing 5101 presents predetermined angle theta 3, and above-mentioned predetermined angle theta 3 is less than 90 degree.In addition, infrared light filtering apparatus 514, optical mirror slip group 516, infrared light emission device 518 (this figure does not illustrate) are also arranged along with above-mentioned predetermined angle theta 3 with optical mirror slip 520 (this figure does not illustrate).Wherein, infrared light emission device 518 must make the direct of travel of infrared light can be roughly parallel to real work table plane 802 with the set-up mode of optical mirror slip 520.Because above-mentioned predetermined angle theta 3 is for being less than 90 degree, therefore the visual field of image sensor 512 is limited distance.That is, the depth of field of image that image sensor 512 senses is limited distance.
Similarly, the image sensor 532 in image sensing module 530, infrared light filtering apparatus 534, optical mirror slip group 536, infrared light emission device 538 and optical mirror slip 540 are also arranged in the mode shown in Figure 12.
Referring again to Fig. 9, because limited distance is changed into by infinity in the visual field of image sensor 512 and 532, therefore known in touch area 590, the length on two limits formed by dotted line 584 and 586 is that the visual field farthest that can sense according to image sensor 512 and 532 defines.And the visual field farthest that image sensor can sense can refer to the mode shown in Figure 13 to calculate.In fig. 13, D is expressed as the visual field farthest (i.e. the length of dotted line 584 or 586) that image sensor 512 can sense, and H is expressed as the height of image sensor 512, and θ 2 is expressed as angle.Relation between D, H, θ 2 is represented by the formula D=H/tan (θ 2) in figure, and θ 3 (see Figure 12) adds that θ 2 is for angle 90 degree.For example, H is 5mm, θ 2 is angle 1.91 degree, then D is then H/tan (θ 2) through this formulae discovery, is about 150mm.
3rd embodiment:
This example, mainly illustrating in the mode of another hardware constraints, makes the visual field of the image sensor 512 and 532 of Portable optical touch system 500 can change into limited distance by infinity, as shown in figure 14.
Figure 14 illustrates improved Portable optical touch system 500.In fig. 14, label person identical with the label in Fig. 5 is expressed as identical components.And in the optical touch control system 500 shown in Figure 14, the volume of the housing 5101 of image sensing module 510 is increased, and above-mentioned housing 5101 has Part I 51011 and Part II 51012.Communication interface 560 is arranged on Part I 51011, and image sensor 512, infrared light filtering apparatus 514, optical mirror slip group 516, infrared light emission device 518, optical mirror slip 520, treatment circuit 570 and transmission region 5102 are all arranged on Part II 51012.Above-mentioned Part II 51012 is in order to connecting length adjustable connecting apparatus 550, and above-mentioned Part II 51012 can rotate relative to Part I 51011.
Because adjustable in length coupling arrangement 550 connects above-mentioned Part II 51012, and the housing 5301 connecting length adjustable connecting apparatus 550 of image sensing module 530, therefore, when Part II 51012 rotates relative to Part I 51011, adjustable in length coupling arrangement 550 also can rotate identical angle with image sensing module 530.Thus, when above-mentioned Portable optical touch system 500 place or be adjacent to a real work on the surface time, the visual field of image sensor 512 and 532 just can change into limited distance along the anglec of rotation by infinity.
4th embodiment:
By the teaching of the first embodiment, as long as the volume of the adjustable in length coupling arrangement 550 of known Portable optical touch system 500 is enough large, image sensing module 510 just can not adopt housing 5101, and image sensor 512, infrared light filtering apparatus 514, optical mirror slip group 516, infrared light emission device 518 and optical mirror slip 520 can be arranged on wherein one end of adjustable in length coupling arrangement 550.In like manner, image sensing module 530 does not need to adopt housing 5301 yet, and image sensor 532, infrared light filtering apparatus 534, optical mirror slip group 536, infrared light emission device 538 and optical mirror slip 540 can be arranged on the other end of adjustable in length coupling arrangement 550.Certainly, the sensing range of image sensor 512 and 532 still needs part to overlap, and the region that above-mentioned part is overlapped can be used to definition one touch area.Can arrange arbitrarily as communication interface 560 and treatment circuit 570, treatment circuit 570 only need be made still to be electrically connected communication interface 560, image sensor 512 and image sensor 532.
It is worth mentioning that, in this instance, the prospect theory of image sensor 512 and 532 is also infinity.
5th embodiment:
By the teaching of the 4th embodiment and the second embodiment, known in the Portable optical touch system 500 described in the 4th embodiment, image sensor 512 and 532 can be designed to rotate a predetermined angular relative to the axle center of adjustable in length coupling arrangement 550, and above-mentioned predetermined angular is less than 90 degree.Certainly, infrared light filtering apparatus 514, optical mirror slip group 516, infrared light emission device 518 also must do corresponding suitable adjustment along with the anglec of rotation of image sensor 512 with optical mirror slip 520; Infrared light filtering apparatus 534, optical mirror slip group 536, infrared light emission device 538 and optical mirror slip 540 then must do corresponding suitable adjustment along with the anglec of rotation of image sensor 532.Thus, when above-mentioned Portable optical touch system 500 be placed on a real work on the surface time, the visual field of image sensor 512 and 532 just can change into limited distance along sense of rotation by infinity.
6th embodiment:
This embodiment mainly illustrates in the Portable optical touch system that have employed infrared light emission device, at least one optical mirror slip in each optical mirror slip group can interlock the titania (TiO2) of the magnesium oxide (MgO) that is coated with multilayer and multilayer or silicon dioxide (SiO2), produces to make at least one optical mirror slip the effect being similar to infrared light filtering apparatus.Thus, original infrared light filtering apparatus just can be omitted.
It is worth mentioning that, original infrared light filtering apparatus is exactly so-called photoresistance (Photo Resistor), and its composition contains organic compound, macromolecule (Polymer) and plastics (Plastic).
7th embodiment:
This embodiment mainly illustrates in the Portable optical touch system that have employed infrared light emission device, and each infrared light emission device can to replace by a laser light emitter, and each infrared light filtering apparatus all can be omitted.In addition, each optical mirror slip in each optical mirror slip group does not need coating magnesium oxide (MgO), titania (TiO2) and silicon dioxide (SiO2) yet.So should be noted that, optical mirror slip before each is arranged on laser light emitter must convert the pointolite that the laser light emitter of correspondence sends to line source, and the laser luminous energy sent to make corresponding laser light emitter is at least containing covering to touch area.Thus, the laser light that each laser light emitter sends just can be irradiated to the object being positioned at touch area, and each image sensor also can obtain the image of above-mentioned reflections off objects laser light.
It is worth mentioning that, each laser light emitter all can adopt at least one laser light light emitting diode (laser diode) to realize.
8th embodiment:
This embodiment mainly illustrates in the Portable optical touch system that have employed adjustable in length coupling arrangement, and each adjustable in length coupling arrangement all can replace with non-telescoping coupling arrangement.
9th embodiment:
This embodiment mainly illustrates in Portable optical touch system of the present invention, treatment circuit can be designed to define a pattern further in touch area, utilize the virtual user's input interface of above-mentioned pattern, and above-mentioned user's input interface can be a mouse, a keyboard, a Trackpad (Touch Pad) or a change-over switch.For the Portable optical touch system described in the second embodiment, its treatment circuit can be designed to the pattern that can define a mouse function further in touch area, illustrates with Figure 15.
Figure 15 illustrates the mouse function pattern that above-mentioned treatment circuit defines in touch area.In fig .15, the parallelogram region being sequentially connected by an A, some B, some E and some F and being formed is exactly described touch area 590.Wherein, the setting position that A and some B is expressed as two image sensors in Portable optical touch system is put.In addition, region L is virtual is the left button function of mouse, and region M is virtual is the roller function of mouse, and region R is then virtual is the right button function of mouse.Thus, user just can utilize the virtual mouse function in above-mentioned touch area 590 to operate.
Tenth embodiment:
This embodiment mainly illustrates in the Portable optical touch system described in the 9th embodiment, a light emitting devices can be set up again, such as, so that the pattern utilizing the real work of above-mentioned light emitting devices corresponding to touch area to project treatment circuit on the surface to define, projects mouse function pattern, keypad function pattern etc.The light source of above-mentioned light emitting devices can be visible laser light source or visible infrared light supply.
11 embodiment:
First embodiment points out that treatment circuit is after the coordinate obtaining object, just can pass through communication interface and exports described coordinate to an electronic installation.And if this embodiment mainly illustrates that above-mentioned electronic installation has display screen, it is such as a mobile computer, treatment circuit in Portable optical touch system so of the present invention more can be designed to carry out communication through communication interface and above-mentioned electronic installation, to utilize the cursor position of the display screen of above-mentioned electronic installation to react the coordinate of (Mapping) object.12 embodiment:
This embodiment mainly illustrates on the housing of the electronic installation described in the 11 embodiment, also can be provided with a groove, so that Portable optical touch system of the present invention can be arranged in above-mentioned groove, one as shown in figure 16.Figure 16 is the schematic diagram that Portable optical touch system of the present invention is arranged in the groove of electronic installation.And the electronic installation 1602 shown in this figure is for mobile computer.
13 embodiment:
By the teaching of the 12 embodiment, the portable electron device if known with display screen inherently in have Portable optical touch system of the present invention, what so above-mentioned electronic installation also can claim is portable optical contactor control device.Certainly, in built-in Portable optical touch system, just do not need to use adjustable in length coupling arrangement or non-telescoping coupling arrangement.In addition, built-in Portable optical touch system can adopt infrared light emission device or laser light emitter to irradiate the object being positioned at touch area.
14 embodiment:
By the teaching of foregoing embodiments, if known object to be measured itself can be luminous, such as can send infrared light or laser light, so aforesaid each Portable optical touch system does not just need to adopt infrared light emission device or laser light emitter to carry out irradiating object.Certainly, the optical mirror slip before being originally arranged on infrared light emission device or laser light emitter and other associated component also can be omitted.
Each embodiment of the Portable optical touch system of integration above-mentioned employing adjustable in length coupling arrangement, can summarize a kind of basic procedure of method of sensing object position, one as shown in figure 17.Figure 17 is the basic procedure of the method for sensing object position according to one embodiment of the invention.Described method is applicable to a Portable optical touch system, and above-mentioned Portable optical touch system includes the first image sensing module, the second image sensing module, adjustable in length coupling arrangement, treatment circuit and communication interface.Wherein, the sensing range of above-mentioned two image sensing modules is that part overlaps, and the region that above-mentioned part overlaps is used for definition one touch area.Adjustable in length coupling arrangement connects the first image sensing module and the second image sensing module, in order to adjust the distance between the first image sensing module and the second image sensing module.Said method includes: above two image sensing module acquisitions are positioned at the image (as shown in step S1702) of the object of touch area; The image of the object captured according to above-mentioned two image sensing modules by treatment circuit is to calculate the coordinate (as shown in step S1704) of object; And the coordinate (as shown in step S1706) of object is exported by communication interface.Wherein, described treatment circuit can utilize trigonometric function method or two line method of intersection to calculate the coordinate of above-mentioned object.
The explanation of each embodiment of above, known Portable optical touch system of the present invention can replace user's input interfaces such as current mouse, keyboard, Trackpad, and Portable optical touch system of the present invention have volume little, easy to carry, can put everywhere, the advantage of low cost.In addition, Portable optical touch system of the present invention can be limited to working surface unlike current mouse and need smooth restriction, unlike resistance or capacitive touch control plate, also need the restriction of an entity touch area.And the explanation of each embodiment of above, also known Portable optical touch system of the present invention can combine with the electronic installation with display screen or link up, and the action of the cursor in display screen can be controlled, even can realize the current all attainable functions of Touch Screen on the market, as single-point touch, multi-point touch etc.It is worth mentioning that, the technology utilizing optical mode to detect object can be described as optical coupled (Optical Coupling) technology, namely the light signal reflected by least one image sensor object sensing, again above-mentioned smooth signal is converted to electric signal, finally the electric signal that these image sensors calculate is carried out correlativity (correlation) process, in the hope of the characteristic information of object.
In sum, the present invention mainly adopts two image sensing modules and a treatment circuit to build a Portable optical touch system.In the design of reality, be that the sensing range part of two image sensing modules is overlapped, the region that above-mentioned part is overlapped can be used to definition one touch area.Thus, when there being an object (such as finger or lip pencil thing) to be positioned at touch area, the image of the object that treatment circuit just can sense according to these two image sensing modules is to calculate the coordinate of object.And in further design, two image sensing modules can be made to launch infrared lights or laser light with irradiating object, obtain the image of reflections off objects infrared light or laser light by this, allow treatment circuit can according to such image to calculate the coordinate of object.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred 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, when the method and technology contents that can utilize above-mentioned announcement are made a little change or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (18)
1. an electronic installation, comprising:
One Portable optical touch system, comprising:
One first image sensing module;
One second image sensing module, wherein the sensing range of those image sensing modules is that part overlaps, and the region that this part overlaps is in order to define a touch area;
One adjustable in length coupling arrangement, connects this first image sensing module and this second image sensing module, in order to adjust the distance between this first image sensing module and this second image sensing module;
One communication interface; And
One treatment circuit, when there being an object to be positioned at this touch area, the image of this object that this treatment circuit just senses according to those image sensing modules to calculate the coordinate of this object, and exports described coordinate through this communication interface;
One electronic installation, receives this coordinate through this communication interface, and this treatment circuit can pass through this communication interface and this electronic installation carries out communication; And
One display screen, a cursor position of this display screen reflects the coordinate of this object.
2. electronic installation as claimed in claim 1, wherein has more a groove, so that this Portable optical touch system is arranged in this groove.
3. electronic installation as claimed in claim 1, wherein this first image sensing module includes one first housing and one first image sensor, this second image sensing module then includes one second housing and one second image sensor, this first image sensor and this second image sensor are separately positioned in this first housing and this second housing, and all this treatment circuits of electric property coupling, this first housing and this second housing are in order to be connected this adjustable in length coupling arrangement, and there is one first transmission region and one second transmission region respectively, make this first image sensor and this second image sensor can respectively through this first transmission region and this second transmission region sensing image, and the sensing range of this first image sensor and this second imaging device can partly be overlapped.
4. electronic installation as claimed in claim 3, wherein the image capture face of this first image sensor and the bottom surface of this first housing present a predetermined angular, the image capture face of this second image sensor and the bottom surface of this second housing also present this predetermined angular, and wherein this predetermined angular is 90 degree.
5. electronic installation as claimed in claim 4, wherein the shape of this touch area is a quadrilateral, this quadrilateral have sequentially connect one first limit, a Second Edge, one the 3rd limit and one the 4th limit, the corner crossing with the 4th limit, this first limit is the setting position of this first image sensor, the corner crossing with this Second Edge, this first limit is the setting position of this second image sensor, and the length on this Second Edge and the 4th limit is a predetermined length.
6. electronic installation as claimed in claim 3, wherein the image capture face of this first image sensor and the bottom surface of this first housing present a predetermined angular, the image capture face of this second image sensor and the bottom surface of this second housing also present this predetermined angular, and wherein this predetermined angular is less than 90 degree.
7. electronic installation as claimed in claim 6, wherein the shape of this touch area is a quadrilateral, this quadrilateral have sequentially connect one first limit, a Second Edge, one the 3rd limit and one the 4th limit, the corner crossing with the 4th limit, this first limit is the setting position of this first image sensor, the corner crossing with this Second Edge, this first limit is the setting position of this second image sensor, and the visual field farthest that the length system on this Second Edge and the 4th limit can sense according to this first image sensor and this second image sensor defines.
8. electronic installation as claimed in claim 3, wherein this each image sensing module infrared light filtering apparatus of more including an infrared light emission device and infrared light can only being allowed to pass through, this infrared light emission device system is in order to launch this object of Infrared irradiation, and this each image sensor is through this infrared light filtering apparatus of its correspondence to obtain the image of this this infrared light of reflections off objects.
9. electronic installation as claimed in claim 3, wherein this each image sensing module more includes an infrared light emission device and an optical mirror slip group, this infrared light emission device system is in order to launch this object of Infrared irradiation, at least one optical mirror slip in this optical mirror slip group interlocks and is coated with the magnesium oxide of multilayer and the titania of multilayer or silicon dioxide, and this each image sensor is through this optical mirror slip group of its correspondence to obtain the image of this this infrared light of reflections off objects.
10. electronic installation as claimed in claim 9, wherein this each optical mirror slip group system is used for making the visual angle of this corresponding image sensor present at least 90 degree.
11. electronic installations as claimed in claim 3, wherein this each image sensing module more includes a laser light emitter and an optical mirror slip, this laser light emitter is in order to launch some laser light and to be converted to a line laser light to irradiate this object being positioned at this touch area through this optical mirror slip, and this each image sensor system is in order to obtain the image of this line laser light of this reflections off objects.
12. electronic installations as claimed in claim 3, wherein this each image sensing module infrared light filtering apparatus of more including an infrared light emission device and infrared light can only being allowed to pass through, this infrared light emission device system is in order to launch infrared light to irradiate this object, and this each image sensor is through this infrared light filtering apparatus of its correspondence to obtain the image of this this infrared light of reflections off objects.
13. electronic installations as claimed in claim 3, wherein this each image sensing module more includes an infrared light emission device and an optical mirror slip group, this infrared light emission device system is in order to launch infrared light to irradiate this object, at least one optical mirror slip in this optical mirror slip group interlocks and is coated with the magnesium oxide of multilayer and the titania of multilayer or silicon dioxide, and this each image sensor is through this optical mirror slip group of its correspondence to obtain the image of this this infrared light of reflections off objects.
14. electronic installations as claimed in claim 13, wherein this each optical mirror slip group system is used for making the visual angle of this corresponding image sensor present at least 90 degree.
15. electronic installations as claimed in claim 1, wherein this communication interface comprise wired communication interface and wireless communication interface at least one of them, wherein said wire communication interface comprises and realizing with USB (universal serial bus), and described wireless communication interface comprises and realizing with bluetooth wireless transmission interface.
16. electronic installations as claimed in claim 1, wherein this treatment circuit further defines a pattern in this touch area, so that utilizing the virtual user's input interface of this pattern wherein this user's input interface comprises is a mouse, a keyboard, a Trackpad or a change-over switch.
17. electronic installations as claimed in claim 1, it more comprises a light emitting devices, this light emitting devices projects a pattern on the surface in order to the real work corresponding to this touch area, make this treatment circuit further can define this pattern in this touch area, to utilize the virtual user's input interface of this pattern, and this user's input interface to comprise be a mouse, a keyboard, a Trackpad or a change-over switch.
18. electronic installations as claimed in claim 1, wherein this treatment circuit utilizes trigonometric function method or two line method of intersection to calculate the coordinate of this object.
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| CN201410379237.5A CN104252270A (en) | 2010-06-25 | 2010-06-25 | Electronic equipment |
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| CN2010102190017A Division CN102298469A (en) | 2010-06-25 | 2010-06-25 | Portable optical touch system and method for sensing object position |
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