CN201562261U - Electronic equipment - Google Patents
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- CN201562261U CN201562261U CN2009201104568U CN200920110456U CN201562261U CN 201562261 U CN201562261 U CN 201562261U CN 2009201104568 U CN2009201104568 U CN 2009201104568U CN 200920110456 U CN200920110456 U CN 200920110456U CN 201562261 U CN201562261 U CN 201562261U
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- light source
- electronic equipment
- image acquisition
- touch operation
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Abstract
The utility model provides an electronic equipment with a physical surface, which comprises an optical unit, an image acquisition unit and a processing unit, wherein the optical unit is arranged on the physical surface and used for generating a first optical effect; the image acquisition unit is arranged on the physical surface, and a touch operation area is formed by the image acquisition unit and the optical unit; the image acquisition unit is used for capturing an image of a second optical effect, the image of the second optical effect is formed on the first optical effect after an operation body for operating the electronic equipment enters the touch operation area; the processing unit is connected with the image acquisition unit and used for determining the range of the operation body in the touch operation area according to the image of the second optical effect; the image acquisition unit is provided with a plurality of sensing surfaces formed by pixel acquisition units distributed uniformly, the sensing surfaces are rectangles, the image acquisition unit is arranged to lead the projected length of one diagonal of the rectangle on the intersecting line of the plane of the sensing surface and the physical surface to be larger than that of any edges of the rectangle; and the sensing surface is not parallel to the physical surface. The electronic equipment improves system resolution.
Description
Technical field
The utility model relates to a kind of electronic equipment, relates in particular to a kind of electronic equipment that has optical touch system.
Background technology
In the present optical touch system, camera comprises a plurality of pixel acquisition unit, and a plurality of pixel acquisition unit are evenly distributed on the sensitive face of camera.The resolution of this system is subjected to the influence of the resolution of pixel acquisition unit.Because the special placement location of camera, the touch that camera can be discerned is counted and is subjected to the restriction of the pixel parallel with screen plane.The size of supposing to touch object presents on camera and is of a size of a point, and maximum objects that so single camera can be discerned are 640 (under present cases), and the sum of the touch point on the whole screen is less than 640*640 point.
Present camera, its pixel that comprises is many not enough, owing to be subjected to above-mentioned restriction, the performance of its detection is subjected to limitation.
So expect a kind of electronic equipment that can under the situation that does not increase system cost, improve systemic resolution.
Fig. 1 is according to optical touch system camera position synoptic diagram in the electronic equipment of prior art;
As shown in Figure 1, in this system, camera 202 is arranged on a side of physical surface 208, and the sensitive face 204 of camera is a square, and one bar limit is parallel to display screen.The size of supposing operating body presents on camera and is of a size of a point, maximum objects that then single camera can be discerned are 640 (under present circumstances), the sum of the touch point on the entire display screen is less than 640*640 point, just as shown in Figure 2, decision systems resolution is the pixel of delegation's horizontal direction of CMOS chip.
So expect a kind of electronic equipment that can under the situation that does not increase system cost, improve systemic resolution.
The utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of electronic equipment, and it can improve the resolution of optical touch system wherein.
The utility model provides a kind of electronic equipment, has a physical surface, and electronic equipment comprises: optical unit, be arranged on the physical surface, and be used to produce first optical effect; Image acquisition units is arranged on the physical surface, and image acquisition units and optical unit form a touch operation zone; Image acquisition units is used to catch the image of second optical effect, and the image of second optical effect is to form on first optical effect after the operating body that is used for operating electronic equipment enters the touch operation zone; And processing unit, be connected with image acquisition units, be used for image according to second optical effect, determine the scope of operating body in the touch operation zone; Wherein, image acquisition units has the sensitive face of being made up of a plurality of equally distributed pixel acquisition unit, sensitive face is a rectangular shape, image acquisition units is set, makes the projected length of a diagonal line on the intersection of the plane at sensitive face place and physical surface of rectangle greater than the length on arbitrary limit of rectangle; And sensitive face and physical surface are not parallel.
Preferably, optical unit comprises: first light source and secondary light source, and two summits that are separately positioned on physical plane are located, and are used to shine physical plane; Image acquisition units comprises: first camera and second camera are separately positioned on two the summit place identical with secondary light source with first light source; Wherein, first light source and secondary light source and first camera and second camera form a touch operation zone; First camera and second camera are used to gather the light of the operating body reflection that enters the touch operation zone, form the image of operating body.
Preferably, optical unit comprises: first light source and secondary light source, and two summits that are separately positioned on physical plane are located, and are used to shine physical plane; Image acquisition units comprises: first camera and second camera are separately positioned on two the summit place different with secondary light source with first light source; Wherein, first light source and secondary light source and first camera and second camera form a touch operation zone; First camera and second camera are used to be captured on the touch operation zone owing to operating body stops the image that the light of first light source and secondary light source forms.
Preferably, optical unit comprises: first light source, and a summit that is arranged on physical plane is located, and is used to shine physical plane; Image acquisition units comprises: first camera is arranged on the place, a summit with the identical or different physical surface of first light source; Wherein, first light source and first camera form a touch operation zone; First camera is used to be captured on the touch operation zone owing to the reflection of touch operation body or stops the image that first source light forms.
Preferably, optical unit comprises: light source, and a summit that is arranged on physical plane is located; Light guide plate is arranged at a side of physical surface, and an end face and the light source of light guide plate connect, light guide plate be used for from the light scatter of light source to physical surface.
Wherein, first optical effect is from image acquisition units, the effect that optical unit comes out light emission; Second optical effect is from collecting unit, after operating body enters touch operation zone back reflection or stops light, thereby forms the effect of image in the optically detecting unit.
Preferably, sensitive face is a square.
Preferably, diagonal line is parallel with physical surface.
Preferably, sensitive face is vertical with physical surface.
Preferably, first and second light sources are LED or laser diode.
Preferably, LED is an infrared LED, and laser diode is an infra-red laser diode.
Improved the resolution of system by the technical solution of the utility model.
Be noted that the description and the following detailed description all are exemplary, being intended to provides further instruction to desired the utility model.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below with reference to accompanying drawings, other purpose, feature and the effect to utility model is described in further detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is according to optical touch system camera position synoptic diagram in the electronic equipment of prior art;
Fig. 2 is the sensitive face synoptic diagram according to optical touch system camera in the electronic equipment of prior art;
Fig. 3 is the synoptic diagram of the investigative range of optical touch system camera on display screen in the electronic equipment;
Fig. 4 is according to optical touch system structural representation in the electronic equipment of an embodiment of the utility model;
Fig. 5 is the installation site synoptic diagram according to optical touch system camera in the electronic equipment of an embodiment of the utility model;
Fig. 6 is the sensitive face synoptic diagram according to optical touch system camera in the electronic equipment of an embodiment of the utility model;
Fig. 7 is according to optical touch system structural representation in the electronic equipment of another embodiment of the utility model; And
Fig. 8 is the optical touch system structure intention according to another embodiment of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Fig. 4 is according to optical touch system structural representation in the electronic equipment of an embodiment of the utility model;
As shown in Figure 4, this optical touch system comprises two light sources 404, is arranged at the upper left corner and the upper right corner of display screen 408 respectively, is used to launch light, shines described display screen surface; Two cameras 406 are separately positioned on the upper left corner and the upper right corner of display screen 408, respectively towards display screen, are used to gather the light of the operating body reflection in the touch operation zone that enters display screen, thereby form the image of operating body in camera; Processor 402 links to each other with camera, is used for according to two images that camera became, and utilizes the triangle location Calculation to go out the actual position of finger.
The concrete principle of work of this system is as follows: use the light source irradiation display screen, when the operation object, for example point, during the touch display screen surface, finger can stop the transmission of the light of light emitted, and part light can be reflected.Two cameras can capture the light of finger reflection, thereby form the image of finger in camera.Camera links to each other with processor, gives processor with image transfer, and processor utilizes the triangle location Calculation to go out the actual position of finger according to two images that become in the distance between two cameras and two cameras.
Each touch point that touch system can be discerned all must by about two cameras discern simultaneously.Each camera has certain field range, have only when operating body is arranged in both overlapping regions of field range, the accurate touch location of identifying operation body, as shown in Figure 3, two ray P1P2, P4P3 institute area surrounded that with the upper left corner are end points are the pickup area of first camera in the upper left corner, two ray P1P4, P2P3 institute area surrounded that with the upper right corner are end points are the pickup area of second camera in the upper right corner, and the public domain of the two is the image acquisition region of this system.During the public domain scope of having only that operating body is positioned at that P1, P2, P3 and 4 of P4 surrounded, just might be detected by camera.
In above-mentioned touch system, systemic resolution is subjected to the influence of camera resolution.
As previously mentioned, the sensitive face of camera is a square.As mentioning in the background technology, in general optical touch system, a limit of sensitive face is parallel to display screen, the restriction of the pixel that is subjected to the camera parallel with display screen so the touch that camera can be surveyed is counted.
Fig. 5 is the installation site synoptic diagram according to optical touch system camera in the electronic equipment of an embodiment of the utility model;
As shown in Figure 5, in an embodiment of the electronic equipment that has an optical touch system of the present utility model, the diagonal line of the sensitive face of camera is set to parallel with display screen.
Camera has the sensitive face of being made up of a plurality of equally distributed pixel acquisition unit, herein, sensitive face is a square, because cornerwise length is approximately 1.4 times of length of side, so the corresponding actual pixel count that utilizes is approximately 1.4 times of pixel count on the side, thus, single camera the object quantity that can discern be 1.4 times of the prior art.That is, as shown in Figure 6, can think that the resolution of system is determined (in fact, by this setup, be not only to have utilized the pixel on the diagonal line, also have the staggered pixel of the upper and lower side of diagonal line) by the one-row pixels on the diagonal line.
Like this, by reapposing the position of camera, that is, position rotation 45 degree with camera improve pixel quantity.The actual like this camera pixel of using will reach about 1.4 times of original pixel, and the touch that can promote on the entire display screen is counted thus.Under the prerequisite that does not increase cost, promoted to touch on the display screen and counted like this, promptly improved systemic resolution.
Obviously, the foregoing description is a kind of optimal way of the present utility model, the anglec of rotation of camera never only limits to 45 degree, and the vertical line that needs only with its sensitive face is the pixel coverage that axle center slight inclination certain angle just can increase actual utilization, improves the resolution of system thus.
In addition, the sensitive face of camera also is not limited to vertical with physical surface, but can be according to actual needs and with physical surface at an angle, as long as it is not parallel with physical surface, the certain limit that can collect on the physical surface gets final product, and vertically only is preferred mode.
In addition, the sensitive face of camera also is not limited only to be square, and the sensitive face of rectangle also is applicable to set-up mode of the present utility model.Sensitive face at camera is under the situation of rectangle, described camera can be set, make the projected length of a diagonal line on the intersection of the plane at described sensitive face place and described physical surface of described rectangle greater than the length on arbitrary limit of described rectangle, like this, the pixel count that is utilized is parallel to the pixel count that is utilized when physical surface is provided with greater than a limit of rectangle, thereby improves resolution.
Wherein above-mentioned light source can be LED or laser diode.
Preferably, can adopt infrared LED or infra-red laser diode, because the infrared light human eye is invisible, so can be very little to user's visual impact.Correspondingly, described image collecting device adopts infrared camera.Certainly, also can adopt other light sources and corresponding image collecting device.
Fig. 7 is according to optical touch system structural representation in the electronic equipment of another embodiment of the utility model;
As shown in Figure 7, this optical touch system comprises two light sources 704, is arranged at the lower left corner and the lower right corner of display screen 708 respectively, is used to launch light, shines described display screen surface; Two cameras 706 are separately positioned on the upper left corner and the upper right corner of display screen 708, respectively towards display screen, thereby are used for gathering the operating body in the touch operation zone that enters display screen owing to stop the image that the light of light emitted forms at camera; Processor 702 links to each other with camera, is used for according to two images that camera became, and utilizes the triangle location Calculation to go out the actual position of finger.Embodiment among this embodiment and Fig. 4 difference is light source and camera branch are arranged, and is not to utilize the reflective of finger but by pointing the position of being judged finger stopping of light.
Herein, shown light source is a pointolite, still, in fact, can also adopt other forms of light source.For example, can be line source, line source can be arranged on a side or many sides of physical surface.Line source can be made up of a plurality of pointolites, also can be light-emitting section, light-emitting section can be made up of light guide plate and light source, and light guide plate is arranged at a side or many sides of physical surface, one end is relative with pointolite, and the light that is used for pointolite is launched scatters to physical surface equably.In addition, light-emitting section also can be formed with light source and reflection bar, with reflection bar the light that light source sent is reflexed on the physical surface.By adopting line source can make it luminous more even, more help the identification to operating body of image acquisition units.
Fig. 8 is according to optical touch system structural representation in the electronic equipment of another embodiment of the utility model;
As shown in Figure 8, comprise a camera, a light source and a processor in this optical touch system.Light source 804 is arranged at the upper left corner of display screen 808, is used to launch light, shines described display screen surface; Camera 806 is arranged on the upper left corner of display screen 808, and towards display screen, the operating body that is used to gather the touch operation zone that enters display screen is because the light that the described light source of reflection sends, thereby forms image in camera; Processor 802 links to each other with camera, is used for the image that becomes according to camera, determines the scope of finger in display screen surface.Owing to be to adopt a camera to survey, herein so can locate in the one dimension direction to operating body.Only need know that operating body gets final product in the position of one dimension direction in some applications.
The embodiment that adopts camera of a light source and light source and camera to be set together has been shown among Fig. 8, but in fact, can adopt other set-up mode as required, for example camera and light source branch are arranged, utilize reflected light or the light that stops is surveyed.
Be that example is described with the display screen in the foregoing description, obviously, this electronic equipment is not limited only to computing machine, but can be televisor, computer keyboard, mobile device, on equipment such as notebook, all-in-one display screen, perhaps we can say any electronic equipment with physical plane.
Realized following technique effect by the technical solution of the utility model: under the prerequisite that does not increase cost, promoted systemic resolution.
Be embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (9)
1. an electronic equipment has a physical surface, and described electronic equipment comprises:
Optical unit is arranged on the described physical surface, is used to produce first optical effect;
Image acquisition units is arranged on the described physical surface, and described image acquisition units and described optical unit form a touch operation zone; Described image acquisition units is used to catch the image of second optical effect, and the image of described second optical effect is to form on described first optical effect after the operating body that is used to operate described electronic equipment enters described touch operation zone; And
Processing unit is connected with described image acquisition units, is used for the image according to described second optical effect, determines the scope of described operating body in described touch operation zone;
It is characterized in that:
Described image acquisition units has the sensitive face of being made up of a plurality of equally distributed pixel acquisition unit, described sensitive face is a rectangular shape, described image acquisition units is set, makes the projected length of a diagonal line on the intersection of the plane at described sensitive face place and described physical surface of described rectangle greater than the length on arbitrary limit of described rectangle; And
Described sensitive face and described physical surface are not parallel.
2. electronic equipment according to claim 1 is characterized in that:
Described optical unit comprises: first light source and secondary light source, and two summits that are separately positioned on described physical plane are located, and are used to shine described physical plane;
Described image acquisition units comprises: first camera and second camera are separately positioned on described two the summits place identical with secondary light source with described first light source;
Wherein, described first light source and secondary light source and described first camera and second camera form a touch operation zone;
Described first camera and second camera are used to gather the light of the operating body reflection that enters described touch operation zone, form the image of described operating body.
3. electronic equipment according to claim 1 is characterized in that:
Described optical unit comprises: first light source and secondary light source, and two summits that are separately positioned on described physical plane are located, and are used to shine described physical plane;
Described image acquisition units comprises: first camera and second camera are separately positioned on two the summit place different with secondary light source with described first light source;
Wherein, described first light source and secondary light source and described first camera and second camera form a touch operation zone;
Described first camera and second camera are used to be captured on the described touch operation zone owing to operating body stops the image that the light of described first light source and secondary light source forms.
4. electronic equipment according to claim 1 is characterized in that:
Described optical unit comprises: first light source, and a summit that is arranged on described physical plane is located, and is used to shine described physical plane;
Described image acquisition units comprises: first camera is arranged on the place, a summit with the identical or different described physical surface of described first light source;
Wherein, described first light source and described first camera form a touch operation zone;
Described first camera is used to be captured on the described touch operation zone owing to the reflection of touch operation body or stops the image that described first source light forms.
5. electronic equipment according to claim 1 is characterized in that:
Described optical unit comprises: light source, and a summit that is arranged on described physical plane is located; Light guide plate is arranged at a side of described physical surface, and an end face and the described light source of described light guide plate connect, described light guide plate be used for from the light scatter of described light source to described physical surface.
6. electronic equipment according to claim 1 is characterized in that:
Described first optical effect is from described image acquisition units, the effect that described optical unit comes out light emission; Described second optical effect is from collecting unit, after described operating body enters described touch operation zone back reflection or stops described light, thereby forms the effect of image in described optically detecting unit.
7. electronic equipment according to claim 1 is characterized in that: described sensitive face is square.
8. electronic equipment according to claim 1 is characterized in that: described diagonal line is parallel with described physical surface.
9. electronic equipment according to claim 1 is characterized in that: described sensitive face is vertical with described physical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201104568U CN201562261U (en) | 2009-07-28 | 2009-07-28 | Electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201104568U CN201562261U (en) | 2009-07-28 | 2009-07-28 | Electronic equipment |
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|---|---|
| CN201562261U true CN201562261U (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201104568U Expired - Fee Related CN201562261U (en) | 2009-07-28 | 2009-07-28 | Electronic equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446036A (en) * | 2010-09-30 | 2012-05-09 | 昕兴时乐股份有限公司 | Object sensing device |
| CN102736798A (en) * | 2011-04-14 | 2012-10-17 | 纬创资通股份有限公司 | Optical touch module and method thereof |
| CN103854026A (en) * | 2012-11-28 | 2014-06-11 | 联想(北京)有限公司 | Recognition method and electronic device |
| CN107229378A (en) * | 2016-03-26 | 2017-10-03 | 谭登峰 | Remote control based on two waveband |
| CN110554810A (en) * | 2018-06-01 | 2019-12-10 | 佛山市顺德区美的电热电器制造有限公司 | touch key method, device and readable storage medium |
-
2009
- 2009-07-28 CN CN2009201104568U patent/CN201562261U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446036A (en) * | 2010-09-30 | 2012-05-09 | 昕兴时乐股份有限公司 | Object sensing device |
| CN102736798A (en) * | 2011-04-14 | 2012-10-17 | 纬创资通股份有限公司 | Optical touch module and method thereof |
| CN103854026A (en) * | 2012-11-28 | 2014-06-11 | 联想(北京)有限公司 | Recognition method and electronic device |
| CN103854026B (en) * | 2012-11-28 | 2017-12-29 | 联想(北京)有限公司 | A kind of recognition methods and electronic equipment |
| CN107229378A (en) * | 2016-03-26 | 2017-10-03 | 谭登峰 | Remote control based on two waveband |
| CN107229378B (en) * | 2016-03-26 | 2023-08-22 | 谭登峰 | Positioning method of optical touch screen |
| CN110554810A (en) * | 2018-06-01 | 2019-12-10 | 佛山市顺德区美的电热电器制造有限公司 | touch key method, device and readable storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20180728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |