CN102096518B - Electronic equipment and input method - Google Patents
Electronic equipment and input method Download PDFInfo
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- CN102096518B CN102096518B CN 200910242681 CN200910242681A CN102096518B CN 102096518 B CN102096518 B CN 102096518B CN 200910242681 CN200910242681 CN 200910242681 CN 200910242681 A CN200910242681 A CN 200910242681A CN 102096518 B CN102096518 B CN 102096518B
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Abstract
The invention provides electronic equipment. The electronic equipment is provided with a physical surface, and comprises first and second light sources, a directional reflection component, a third light source, a diffuse reflection component and a processing unit, wherein the first and second light sources are arranged at two vertexes of a first edge of the physical surface respectively and generate a first optical effect; the directional reflection component is arranged on a second edge opposite to the first edge and directionally reflects the first optical effect to first and second image acquisition units; the first and second image acquisition units are arranged near the first and second light sources respectively and are used for acquiring images of the first and second optical effects; the third light source generates a third optical effect; the diffuse reflection component is positioned on the directional reflection component, generates a fourth optical effect and reflects the fourth optical effect to the first and second image acquisition units; and the processing unit determines a position range of an operating body according to an image with the second optical effect, and the position of the operating body is determined according to an image with the fourth optical effect. The invention also provides an input method. Due to the technical scheme, false points on a touch screen are effectively reduced.
Description
Technical field
The present invention relates to electronic applications, relate more specifically to a kind of electronic equipment and input method thereof.
Background technology
At present, touching technique has obtained more general application, for example, adopts the light illuminating screen area, and when touch objects touches screen, the reflective of touch objects caught by camera, and image that can be reflective according to this is located the position of finger.
As shown in Figure 1, there is shown a kind of touch-screen scheme of the prior art, light source 104 and camera 106 are settled in left and right angle at screen 108, and the left and right of screen and downside arrange directional reflective bar 102 (being provided with fusiform structure on its face, for the former road of light is returned).Adopt light source 104 to irradiate screen, for example, when touch objects touch screen surface (A in figure), touch objects can be blocked the transmission of light, and light scattering is arrived to all directions.Two cameras can capture the reflective of touch objects, and this light when not having touch objects is dark,, detects shade that is.
This scheme is to go out the position of touch objects place straight line by the position calculation of dark area in the image of two camera collections above screen (finger areas is the non-directional reflection, can seem darker).Then the method for the intersection point by asking two straight lines, calculate the click location of finger.
Existing vision is that basic touch-screen scheme exists following defect:
Existing scheme is by single, giving directions the calculating of hitting without any ambiguity, but when processing two the indication when hitting, and just need to face problem that false point (false as) is offered an explanation.
Because two fingers, form respectively two straight lines with two cameras, four straight lines altogether, and these four straight lines have four intersection points on screen, as shown in Figure 2, no matter point the position of a little arriving a pair of point of A, B, or the position of a pair of point of C, D, capital forms this four straight lines, and system does not just know which is correct point to point.
Certainly can utilize motion tracking, imaging size scheduling algorithm carrys out aid identification, but can not address this problem because available information is few at all.
Therefore, need a kind of technical scheme that can overcome above-mentioned defect.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of electronic equipment and input method, to overcome above-mentioned defect.
According to an aspect of the present invention, provide a kind of electronic equipment, this electronic equipment has a physical surface, and comprises: the first light source and secondary light source, and the first Liang Ge summit, edge that is positioned at that is separately positioned on physical surface is located, for generation of the first optical effect; The orienting reflex parts, at least be arranged on second edge relative with the first edge of physical surface, for by the first optical effect orienting reflex to the first image acquisition units and the second image acquisition units; The first image acquisition units is arranged near the first light source, the second image acquisition units is arranged near secondary light source, for catching the image of the first optical effect, the image of the second optical effect, wherein, the image of the second optical effect is on the first optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; The 3rd light source, for generation of the 3rd optical effect; The diffuse reflection parts, be arranged on the orienting reflex parts, for generation of the 4th optical effect, and the 4th optical effect reflexed to the first image acquisition units and the second image acquisition units; Wherein, the 4th optical effect is on the 3rd optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; Processing unit, be connected with the second image acquisition units with the first image acquisition units, for the image according to the second optical effect, determines the position range of operating body in the touch operation zone; Further according to the image of the 4th optical effect, determine the position of operating body in the touch operation zone.
Preferably, the wavelength of the 3rd light source is different from the wavelength of the first and second light sources.
Preferably, the moment of the 3rd light source luminescent is different from the moment of the first and second light source luminescents.
Wherein, the 3rd light source is arranged on the first edge or the outside, the first edge.
Wherein, the 3rd light source is arranged on the edge adjacent with the first edge or the outside, adjacent edge.
Wherein, the first optical effect is from the first image acquisition units and the second image acquisition units, and the first light source and secondary light source be effect out by light emission; The second optical effect is from the first image acquisition units and the second image acquisition units, after operating body enters touch operation zone back reflection or stops light, thereby forms the effect of image in image acquisition units; The 3rd optical effect is from the first image acquisition units and the second image acquisition units, and the 3rd light source is effect out by light emission; The 4th optical effect is from the first image acquisition units and the second image acquisition units, after operating body enters behind the touch operation zone and stops the light of the 3rd light source, thereby forms the effect of image in the first image acquisition units and the second image acquisition units.
According to another aspect of the present invention, a kind of input method is provided, comprise the following steps: utilize the first image acquisition units and the second image acquisition units to catch the image of the first optical effect, the image of the second optical effect, wherein, the image of the second optical effect is on the first optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; According to the image of the second optical effect, determine the position range of operating body in the touch operation zone; Utilize the first image acquisition units and the second image acquisition units to gather the 4th optical effect; Wherein, the 4th optical effect is on the 3rd optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; And determine the position of operating body in the touch operation zone according to the image of the 4th optical effect.
Preferably, the wavelength of the 3rd light source is different from the wavelength of the first and second light sources.
Preferably, the 3rd light source luminescent is different from the first and second light source luminescents constantly constantly.
The embodiment of the present invention has following beneficial effect: technical scheme of the present invention, by increasing auxiliary device seldom, provides enough reliable information, thereby makes having reduced of vacation point Probability maximum on touch-screen.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 calculates schematic diagram according to a kind of touch screen structure of prior art and single-point;
Fig. 2 calculates schematic diagram according to the touch screen structure of prior art and two point;
Fig. 3 is touch screen structure and two point calculating schematic diagram in electronic equipment according to an embodiment of the invention; And
Fig. 4 is input method process flow diagram according to an embodiment of the invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
For the defect of the problems referred to above and existing solution, propose following scheme and solve touch-screen and two indications are hit to the problem of identification in the present invention.
Fig. 3 is optical touch system structure and two point calculating schematic diagram in electronic equipment according to an embodiment of the invention;
This electronic equipment has a physical surface, and comprises: the first light source and secondary light source, and the first Liang Ge summit, edge that is positioned at that is separately positioned on physical surface is located, for generation of the first optical effect; The orienting reflex parts, at least be arranged on second edge relative with the first edge of physical surface, for by the first optical effect orienting reflex to the first image acquisition units and the second image acquisition units; The first image acquisition units is arranged near the first light source, the second image acquisition units is arranged near secondary light source, for catching the image of the first optical effect, the image of the second optical effect, wherein, the image of the second optical effect is on the first optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; The 3rd light source, for generation of the 3rd optical effect; The diffuse reflection parts, be arranged on the orienting reflex parts, for generation of the 4th optical effect, and the 4th optical effect reflexed to the first image acquisition units and the second image acquisition units; Wherein, the 4th optical effect is on the 3rd optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; Processing unit, be connected with the second image acquisition units with the first image acquisition units, for the image according to the second optical effect, determines the position range of operating body in the touch operation zone; Further according to the image of the 4th optical effect, determine the position of operating body in the touch operation zone.
Preferably, the wavelength of the 3rd light source is different from the wavelength of the first and second light sources.
Preferably, the moment of the 3rd light source luminescent is different from the moment of the first and second light source luminescents.
Wherein, the 3rd light source is arranged on the first edge or the outside, the first edge.
Wherein, the 3rd light source is arranged on the edge adjacent with the first edge or the outside, adjacent edge.
Wherein, the first optical effect is from the first image acquisition units and the second image acquisition units, and the first light source and secondary light source be effect out by light emission, specifically, is emission of light and irradiates physical surface and the effect of directional reflective bar; The second optical effect is from the first image acquisition units and the second image acquisition units, after operating body enters touch operation zone back reflection or stops light, thereby form the effect of image in image acquisition units, specifically, be that operating body stops that light shines the directional reflective bar and the effect to the first image acquisition units and the second image acquisition units by the diffuse reflection of part light; The 3rd optical effect is from the first image acquisition units and the second image acquisition units, and the 3rd light source is effect out by light emission, specifically, is emission of light and irradiates physical surface and the effect of diffuse reflection bar; The 4th optical effect is from the first image acquisition units and the second image acquisition units, after operating body enters behind the touch operation zone and stops the light of the 3rd light source, thereby form the effect of image in the first image acquisition units and the second image acquisition units, the light that namely stops the 3rd light source shines the diffuse reflection bar, thereby forms the effect of shade on the diffuse reflection bar.
As shown in Figure 3, this optical touch system comprises two light sources 304, is arranged at respectively the upper left corner and the upper right corner of physical surface 308, for emission of light, irradiates described physical surface surface; Directional reflective bar 302, be arranged at left and right side and the lower edge of described physical surface, the light for reflection from described light source.Two cameras 306, be separately positioned on the upper left corner and the upper right corner of physical surface 308, respectively towards physical surface, enters the light of operating body reflection in the touch operation zone of physical surface for collection, thereby form the image of operating body in camera; The processor (not shown), be connected with camera, for the image become according to two cameras, utilizes the triangle location Calculation to go out the position range of touch objects.
As previously mentioned, refer to situation about touching for both hands, can not accurately judge the position of touch in prior art, for this reason, increased by two parts in the present invention on the basis of original scheme: light source 310 is positioned at the top of screen; Diffuse reflection reflecting strips, and original directional reflective bar depositing, for example can adopt the mode of parallel stickup, is placed in (figure is in directional reflective bar 302 same positions) on the directional reflective bar, can certainly adopt other modes.
We can see, light source 310, because finger blocks, can form shadow region on the diffuse reflection reflecting strips, and the shadow positions that the finger of the finger of a pair of A, B position and a pair of C, D position produces is not identical.We just can distinguish false some position according to shadow region like this.
This system specific works principle is as follows: first, second light source emits beam and shines physical surface, the directional reflective bar receives respectively the light of described first, second light source emission, and light is reflexed to respectively near first, second camera be arranged in light source substantially along former road.When the operation object, for example point, while touching the physical surface surface, finger can stop the light of light source emission, and part light can be reflected, because the reflection of pointing is diffuse reflection, these are different from the directional reflective bar, so the light of finger reflection only has, enter on a small quantity camera.Therefore the light from this direction of finger that two cameras capture is than few in the situation that does not have finger, so, at camera, this direction light is darker, senses shadow region.For each finger, two cameras sense respectively a direction that light is darker, and processor can be determined the accurate location of finger according to its intersection point.
, situation about simultaneously touching for two fingers, the straight line of both direction can form four intersection points, and processor is difficult to accurately determine which two actual position that shadow image is two fingers according to these intersection points.
As previously mentioned, in the present invention, by increased by two parts on the basis of original scheme, solve the problems referred to above.That is, by the 3rd light source is set directly over screen, and be arranged side by side the diffuse reflection bar on the directional reflective bar.
Principle is as follows, and the 3rd light source emits beam, and shines regional on physical surface.When two operation objects, for example, during two finger touch physical surfaces, two fingers can stop the light from the 3rd light source, thereby form shade on the diffuse reflection bar, for the situation in figure, for the finger of A, two positions of B, the position of its formed shade on the diffuse reflection bar is A ', B '.In like manner, for the finger of C, two positions of D, the position of its formed shade on the diffuse reflection bar is C ', D '.Because this shade is formed on the diffuse reflection bar, so camera can collect the shade on the diffuse reflection bar, camera is connected with processor, by image transfer to processor, processor according in the distance between two cameras and two cameras, form respectively due to two images that stop that first, second light source becomes, and, formed owing to stopping the also formed shadow image of light of described the 3rd light source of diffuse reflection on the diffuse reflection bar, calculate the actual position of finger.
Visible, can distinguish pseudomorphism by technique scheme of the present invention, greatly reduce the vacation point probability on touch-screen.
The above is only a kind of mode of the embodiment of the present invention, and obviously, this can carry out multiple variation, for example, directly over the position of the 3rd light source is not limited only to, on the physical surface edge that is arranged on the first and second light source places, and the optional position between two light sources; Perhaps not on this edge, but be positioned at the optional position of this edge upside on physical surface; In addition, the 3rd light source can also be arranged on on two edges adjacent with the physical surface edge at the first and second light source places or the precalculated position in the outside at edge, also can realize expected effect.
In addition, the diffuse reflection bar also can be arranged on the one side or the multi-lateral of physical surface as required.
In addition, in order to reduce the impact of the shade that first, second light source produces light source, can be in the following ways:
Mode one: the light that adopts different-waveband.
For example, for first, second light source, adopt the light that wavelength coverage is 700-800nm, and the 3rd camera adopts the light of 850-950nm, the two does not interfere with each other.Can adopt for these two wave bands all responsive camera gathered.
Mode two: the mode that timesharing is shone.
That is, can adopt the light of the same band, just need to will be modulated first and second light source or the 3rd light source, make it luminous within the predetermined time respectively, not overlap each other, thereby can not produce interference.
Fig. 4 is input method process flow diagram according to an embodiment of the invention.
The method input method, comprise the following steps: utilize the first image acquisition units and the second image acquisition units to catch the image of the first optical effect, the image of the second optical effect, wherein, the image of the second optical effect is on the first optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; According to the image of the second optical effect, determine the position range of operating body in the touch operation zone; Utilize the first image acquisition units and the second image acquisition units to gather the 4th optical effect; Wherein, the 4th optical effect is on the 3rd optical effect, to form after operating body for operating electronic equipment enters the touch operation zone; And determine the position of operating body in the touch operation zone according to the image of the 4th optical effect.
Preferably, the wavelength of the 3rd light source is different from the wavelength of the first and second light sources.
Preferably, the 3rd light source luminescent is different from the first and second light source luminescents constantly constantly.
In sum, technical scheme of the present invention, by increasing auxiliary device seldom, provides enough information help reliably, thereby makes having reduced of vacation point Probability maximum on touch-screen.
These are only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (8)
1. an electronic equipment, is characterized in that, described electronic equipment has a physical surface, and comprises:
The first light source and secondary light source, the first Liang Ge summit, edge that is positioned at that is separately positioned on described physical surface is located, for generation of the first optical effect;
The orienting reflex parts, at least be arranged on second edge relative with described the first edge of described physical surface, for by described the first optical effect orienting reflex to the first image acquisition units and the second image acquisition units;
Described the first image acquisition units is arranged near described the first light source, described the second image acquisition units is arranged near described secondary light source, for catching the image of the first optical effect, the image of the second optical effect, wherein, the image of described the second optical effect is on described the first optical effect, to form after operating body for operating described electronic equipment enters the touch operation zone;
The 3rd light source, for generation of the 3rd optical effect;
The diffuse reflection parts, be arranged on described orienting reflex parts, for generation of the 4th optical effect, and described the 4th optical effect reflexed to described the first image acquisition units and the second image acquisition units; Wherein, described the 4th optical effect is on described the 3rd optical effect, to form after operating body for operating described electronic equipment enters described touch operation zone;
Processing unit, be connected with the second image acquisition units with described the first image acquisition units, for the image according to described the second optical effect, determines the position range of described operating body in described touch operation zone; Further according to the image of described the 4th optical effect, determine the position of described operating body in described touch operation zone;
Wherein, described the first optical effect is from described the first image acquisition units and the second image acquisition units, and described the first light source and secondary light source be effect out by light emission; Described the second optical effect is from the first image acquisition units and the second image acquisition units, after described operating body enters described touch operation zone back reflection or stops described light, thereby forms the effect of image in described image acquisition units;
Described the 3rd optical effect is from described the first image acquisition units and the second image acquisition units, and described the 3rd light source is effect out by light emission;
Described the 4th optical effect is from described the first image acquisition units and the second image acquisition units, after described operating body enters behind described touch operation zone and stops the light of described the 3rd light source, thereby form the effect of image in described the first image acquisition units and the second image acquisition units.
2. electronic equipment according to claim 1 is characterized in that:
The wavelength of described the 3rd light source is different from the wavelength of described the first and second light sources.
3. electronic equipment according to claim 1 is characterized in that:
The moment of described the 3rd light source luminescent is different from the moment of described the first and second light source luminescents.
4. electronic equipment according to claim 1 is characterized in that:
Described the 3rd light source is arranged on described the first edge or described first outside, edge.
5. electronic equipment according to claim 1 is characterized in that:
Described the 3rd light source is arranged on the edge adjacent with described the first edge or the outside, described adjacent edge.
6. an input method, the method is for a kind of electronic equipment, and described electronic equipment has a physical surface, and comprises: the first light source and secondary light source, be separately positioned on first place, Liang Ge summit, edge that is positioned at of described physical surface, for generation of the first optical effect; The orienting reflex parts, at least be arranged on second edge relative with described the first edge of described physical surface, for by described the first optical effect orienting reflex to the first image acquisition units and the second image acquisition units; Described the first image acquisition units is arranged near described the first light source, and described the second image acquisition units is arranged near described secondary light source; The 3rd light source, for generation of the 3rd optical effect; The diffuse reflection parts, be arranged on described orienting reflex parts, for generation of the 4th optical effect, and described the 4th optical effect reflexed to described the first image acquisition units and the second image acquisition units; It is characterized in that, the method comprises the following steps:
Utilize described the first image acquisition units and the second image acquisition units to catch the image of described the first optical effect, the image of the second optical effect, wherein, described the first optical effect is from described the first image acquisition units and the second image acquisition units, and described the first light source and secondary light source be effect out by light emission; The image of described the second optical effect is on described the first optical effect, to form after the operating body for operating electronic equipment enters the touch operation zone, described the second optical effect is from the first image acquisition units and the second image acquisition units, after described operating body enters described touch operation zone back reflection or stops described light, thereby form the effect of image in described image acquisition units;
According to the image of described the second optical effect, determine the position range of described operating body in described touch operation zone;
Utilize described the first image acquisition units and the second image acquisition units to gather the 4th optical effect, wherein, described the 4th optical effect is on the 3rd optical effect, to form after the operating body for operating described electronic equipment enters described touch operation zone, particularly, described the 4th optical effect is from described the first image acquisition units and the second image acquisition units, after described operating body enters behind described touch operation zone and stops the light of described the 3rd optical effect, form the effect of shadow image in described the first image acquisition units and the second image acquisition units, wherein, described the 3rd optical effect is from described the first image acquisition units and the second image acquisition units, described the 3rd light source is effect out by light emission, and
Determine the position of described operating body in described touch operation zone according to the image of described the 4th optical effect.
7. method according to claim 6 is characterized in that:
The wavelength of described the 3rd light source is different from the wavelength of described the first and second light sources.
8. method according to claim 6 is characterized in that:
The moment of described the 3rd light source luminescent is different from the moment of described the first and second light source luminescents.
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| CN 200910242681 CN102096518B (en) | 2009-12-14 | 2009-12-14 | Electronic equipment and input method |
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| CN 200910242681 CN102096518B (en) | 2009-12-14 | 2009-12-14 | Electronic equipment and input method |
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| CN102096518B true CN102096518B (en) | 2013-12-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103064560B (en) * | 2013-01-15 | 2016-09-14 | 胡辉 | A kind of multi-point touch panel |
| US9367177B2 (en) * | 2013-06-27 | 2016-06-14 | Hong Kong Applied Science and Technology Research Institute Company Limited | Method and system for determining true touch points on input touch panel using sensing modules |
| KR102388590B1 (en) * | 2015-08-13 | 2022-04-21 | 삼성전자주식회사 | Electronic device and method for inputting in electronic device |
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| EP1059605A2 (en) * | 1999-06-10 | 2000-12-13 | Newcom Inc. | Optical unit for detecting object and coordinate input apparatus using the same |
| CN101145091A (en) * | 2007-11-01 | 2008-03-19 | 复旦大学 | Touch panel based on infrared pick-up and its positioning detection method |
| CN101582001A (en) * | 2009-07-07 | 2009-11-18 | 松翰科技股份有限公司 | Touch control screen, touch control module and control method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1059605A2 (en) * | 1999-06-10 | 2000-12-13 | Newcom Inc. | Optical unit for detecting object and coordinate input apparatus using the same |
| CN101145091A (en) * | 2007-11-01 | 2008-03-19 | 复旦大学 | Touch panel based on infrared pick-up and its positioning detection method |
| CN101582001A (en) * | 2009-07-07 | 2009-11-18 | 松翰科技股份有限公司 | Touch control screen, touch control module and control method |
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