CN103268172B - The optical imaging touchscreen and effective method to strengthen signal - Google Patents

The optical imaging touchscreen and effective method to strengthen signal Download PDF

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CN103268172B
CN103268172B CN 201310196862 CN201310196862A CN103268172B CN 103268172 B CN103268172 B CN 103268172B CN 201310196862 CN201310196862 CN 201310196862 CN 201310196862 A CN201310196862 A CN 201310196862A CN 103268172 B CN103268172 B CN 103268172B
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strip
optical imaging
body
touch screen
surface
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CN 201310196862
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CN103268172A (en )
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黄斐铨
黄安麒
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广州视睿电子科技有限公司
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Abstract

本发明提供一种光学成像触摸屏及其有效信号加强方法,光学成像触摸屏包括触摸屏本体、摄像头和多个边条,摄像头设置于触摸屏本体的一边两角上,边条设置于触摸屏本体的其它边上,触摸屏本体的背板表面光滑。 The present invention provides an optical imaging touchscreen, and a valid signal strengthening method, optical imaging touch screen includes a touch screen body, a camera and a plurality of edge strips, the other side of the camera is provided on the side corners of the touch screen body, edge strips disposed on the touch screen body , the back plate of the body smooth surface of the touchscreen. 本发明光学成像触摸屏,触摸屏背板的表面光滑能够形成镜面反射,这样摄像头不但能够拍摄到边条的实像而且还能在拍摄到由于镜面反射形成的边条的虚像,所以摄像头拍摄的亮条宽度就大大增加了,亮条宽度越大,则有效图像范围越大,得到的有效信号就越强。 The optical imaging of the present invention, a touch screen, the surface of the touch screen backsheet smooth capable of forming a specular reflection, so that the camera can not only captured real image edge strip but also in the captured since the virtual image strip specular reflection is formed, so that the camera captured the highlight width greatly increased, the larger the highlight width, the larger the effective image range, the more effective the resulting signal.

Description

光学成像触摸屏及其有效信号加强方法 The optical imaging touchscreen and effective method to strengthen signal

技术领域 FIELD

[0001] 本发明涉及光学成像技术领域,特别是涉及光学成像触摸屏及其有效信号加强方法。 [0001] Technical Field The present invention relates to optical imaging, and more particularly to an optical imaging touchscreen and effective method to strengthen the signal.

背景技术 Background technique

[0002] 我们都知道,现有的光学成像触摸屏普遍利用的光学原理如下:安装在顶部左上角的(XD/CM0S摄像头,通过LED灯发射出光线,经过四周反射条反射,进入左上角的CXD/CMOS摄像头中。同理,右上角的LED发射的光线传入右侧的CCD摄像头中。密布的光线在触摸区域内形成一张光线网,经过多次反射的光线之间的空间在IMM以内。当触摸一点时,左边LED发射到该点的光线和反射膜反射回去的光线都被遮挡住,同时右边的LED发射到改点的光线也被遮挡住,这样两端的CCD/CM0S摄像头与这两条光线以及两个摄像头之间构成的直线又会组成两个夹角,这样该点的准确坐标被控制器录入,实现触摸反应。实现了单点、多点触摸。 [0002] As we all know, optics conventional optical imaging touchscreen universally available as follows: Install (XD / CM0S at the top left corner of the camera, the light emitted by the LED lamp, four weeks after reflection strip reflected into the upper left corner of CXD / CMOS camera in. Similarly, the upper right corner of the emitted light from the LED passing the right CCD camera. clouds light rays form a network within the touch area, within the space between the light through multiple reflections in the IMM when mind when touched, the left LED emits the light and reflection film that point back light are obscured, while the right LED is transmitted to the light change point is also obscured such that both ends of CCD / CM0S camera and this between two light and two straight lines will form two camera angle, so that the exact coordinates of the point of entry by the controller to achieve touch response. enables a single point, multi-point touch.

[0003] 现有的光学成像触摸屏在实际使用时,摄像头会拍摄到有白色亮条的图像,白色亮条区域为反光层所在的区域,即有效的触摸区域。 [0003] conventional optical imaging touchscreen In actual use, the camera will be taken to the highlight white image, the highlight region is a region of the white reflecting layer is located, i.e., an effective touch region. 当有触摸物体进入时,如上图红色方框圈住的位置,白色亮条出现的断点,那就是被触摸物体遮挡的效果。 When a touch object enters, as circled in FIG red block position, a bright white bar appears breakpoint, that is the touched object that blocks the effect. 亮条宽度越大,则有效图像范围越大,得到的有效信号就越强。 Light bar width is larger, the larger the effective image range, the more effective the resulting signal. 现有的光学成像触摸屏的实际应用中,亮条的宽度取决于反光层的实际宽度,亮条宽度越大,则有效图像范围越大,得到的有效信号就越强。 Existing practice in the optical imaging touchscreen, a bright stripe width depends on the actual width of the reflecting layer, the greater the highlight width, the larger the effective image range, the more effective the resulting signal.

[0004] 为了获得更强的有效信号通常的做法是增加边条的宽度,而增加边条的宽度势必会增加光学成像触摸屏的生产成本。 [0004] In order to obtain a stronger useful signal is common practice to increase the width of the strip, the strip width increases will inevitably increase the production costs of the optical imaging touchscreen.

发明内容 SUMMARY

[0005] 基于此,有必要针对一般光学成像触摸屏采用增加边条宽度增加有效信号强度会增加光学成像触摸屏生产成本的问题,提供一种结构简单、生产成本低廉且能有效增加有效信号强度的光学成像触摸屏及其有效信号加强方法。 [0005] Based on this, it is necessary to use increased strip width for a conventional optical imaging touchscreen problem of increasing the effective signal strength may increase the optical imaging production cost of the touch screen, there is provided a simple structure, low production cost and can effectively increase the effective signal strength of the optical imaging touchscreen and effective method to strengthen the signal.

[0006] —种光学成像触摸屏,包括触摸屏本体、摄像头和多个边条,所述摄像头设置于所述触摸屏本体的一边两角上,所述边条设置于所述触摸屏本体的其它边上,所述触摸屏本体的背板表面为光滑的表面。 [0006] - such an optical imaging touchscreen, a touch screen comprising a body, a plurality of strip camera and the camera is provided to the touch screen corners on one side of the body, the other side edge of the strip is provided on the touch screen body, backsheet surface of the touch screen body is a smooth surface.

[0007] 在其中一个实施例中,所述边条为表面贴附有反光层的反光边条。 [0007] In one embodiment, the reflecting strip is a strip attached to the surface with the reflective layer.

[0008] 在其中一个实施例中,所述边条为表面设置有发光源的发光边条。 [0008] In one embodiment, the strip is provided with a light emitting source emitting strip surface.

[0009] 在其中一个实施例中,所述触摸屏本体和所述背板为矩形,所述边条的数量为三个,所述边条突出所述触摸屏本体的高度为10毫米。 [0009] In one embodiment, the touch screen is a rectangular body and the back plate, the number is three edge strips, said edge strips of the touch panel body projecting height of 10 mm.

[0010] 在其中一个实施例中,所述摄像头为红外摄像头。 [0010] In one embodiment, the camera is an infrared camera.

[0011] —种光学成像触摸屏有效信号加强方法,所述触摸屏本体的一边两角上分别设置摄像头,所述触摸屏本体的其它边条上设置边条,所述触摸屏本体的背板表面为光滑表面; [0011] - such an optical imaging touchscreen valid signal reinforcing method, the touch screen is provided cameras are on one side of the corners of the body, the touch disposed strip on the other side of the screen body, the touch backplate surface of the panel body is a smooth surface ;

[0012] 所述光学成像触摸屏有效信号加强方法包括步骤: [0012] The optical imaging touchscreen effective reinforcing signal comprising the steps of:

[0013] 通过所述摄像头拍摄获取所述边条形成的亮条实像和所述边条在所述触摸屏本体的背板表面形成的亮条虚像; [0013] captured by the camera to obtain the bright strip forming the highlight bar real and the strip surface is formed in the back plate of the touch screen a virtual image of the body;

[0014] 根据所述亮条实像和所述亮条虚像获取光学成像触摸屏的有效信号。 [0014] The real and the virtual light bar signal is active image acquisition optical imaging touch screen according to the light bar.

[0015] 在其中一个实施例中,所述步骤通过所述摄像头拍摄获取所述边条形成的亮条实像和所述边条在所述触摸屏本体的背板表面形成的亮条虚像具体包括: [0015] In one embodiment, the step of obtaining by said camera to photograph the light bar strip formed by the real and the highlight bar strip formed on the surface of the back plate of the touch screen a virtual image of the body comprises:

[0016] 通过所述摄像头拍摄获取所述边条的亮条图像; [0016] The captured image acquiring highlight bar through the strip of the camera;

[0017] 定义所述边条突出所述触摸屏本体的背板表面的方向为上,将所述亮条图像中上半部分识别为所述边条形成的亮条实像,所述亮条图像中下部分识别为所述边条在所述触摸屏本体的背板表面形成亮条虚像。 [0017] The projecting strip defining the direction of the touch panel of the backing plate is on the surface of the body, the highlight bar in the upper half of the image is identified as a bright real image of the bar strip formed by the image light bar identifying a lower portion of said strip is formed as a virtual image in the highlight of the touch screen surface of the backing plate body.

[0018] 在其中一个实施例中,所述步骤根据所述亮条实像和所述亮条虚像获取光学成像触摸屏的有效信号具体包括: [0018] In one embodiment, the steps of the highlight bar to the real and virtual images of the light bar to obtain a valid signal of the optical imaging touch screen comprises:

[0019] 分别计算所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值; [0019] calculates a weighted average gray value of the real image of the light bar, and a weighted average gray value of a virtual image of the light bar;

[0020] 根据所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值绘制能量波形图; [0020] The waveform diagram drawing energy weighted average of the weighted average of gradation values ​​of the highlight real image and a virtual image of the gray value of the light bar;

[0021] 通过绘制的所述能量波形图获取所述光学成像触摸屏的有效信号。 [0021] FIG obtain a valid signal of the optical imaging touchscreen waveform drawn by the energy.

[0022] 在其中一个实施例中,所述边条为表面贴附有反光层的反光边条。 [0022] In one embodiment, the reflecting strip is a strip attached to the surface with the reflective layer.

[0023] 在其中一个实施例中,所述边条为表面设置有发光源的发光边条。 [0023] In one embodiment, the strip is provided with a light emitting source emitting strip surface.

[0024] 本发明光学成像触摸屏,触摸屏背板的表面光滑能够形成镜面反射,这样摄像头不但能够拍摄到在边条上的亮条实像而且还能在拍摄到由于镜面反射形成的亮条的虚像,所以摄像头拍摄的亮条宽度就大大增加了,亮条宽度越大,则有效图像范围越大,得到的有效信号就越强。 [0024] The optical imaging of the present invention, a touch screen, the surface of the touch screen backsheet smooth capable of forming a specular reflection, so that the camera can not only captured highlight bar on the strip a real image but also in the captured since the virtual image light bar specular reflection is formed, Therefore, the width of the light bar taken by a camera is greatly increased, the larger the highlight width, the larger the effective image range, the more effective the resulting signal. 所以本发明光学成像触摸屏是一种结构简单、生产成本低廉且能有效增加有效信号强度的光学成像触摸屏。 Therefore, the present invention is an optical imaging touchscreen is a simple structure, low production cost and can effectively increase the effective signal strength of the optical imaging touchscreen.

附图说明 BRIEF DESCRIPTION

[0025]图1为本发明光学成像触摸屏第一个实施例的结构示意图; [0025] Figure 1 is a schematic structural diagram of a first embodiment of the invention, an optical imaging touchscreen;

[0026]图2为本发明光学成像触摸屏第二个实施例的结构示意图; [0026] FIG. 2 is a schematic structural diagram of a second embodiment of the invention, an optical imaging touchscreen;

[0027]图3为本发明光学成像触摸屏有效信号加强方法第一个实施例的流程示意图; [0027] Figure 3 optical imaging touchscreen effective method to strengthen signal flow according to a first embodiment of the present invention, a schematic diagram;

[0028]图4为本发明光学成像触摸屏有效信号加强方法第二个实施例的流程示意图。 [0028] FIG. 4 the optical imaging touchscreen valid signal flow diagram of a second method embodiment of the present invention to strengthen.

具体实施方式 detailed description

[0029] 如图1所示,一种光学成像触摸屏,包括触摸屏本体100、摄像头200和多个边条300,所述摄像头200设置于所述触摸屏本体100的一边两角上,所述边条300设置于所述触摸屏本体100的其它边上,所述触摸屏本体100的背板表面为光滑的表面。 [0029] on, an optical imaging touchscreen, a body 100 includes a touchscreen, camera 200 and a plurality of strip 300, the camera 200 is provided to one side as shown in FIG corners of the touch screen body 100, the strip 300 disposed on the other side of the main body 100 of the touch screen, the touch screen surface of the body 100 of the backing plate is a smooth surface.

[0030] 在本实施例中,触摸屏本体的背板表面是光滑的,可以近似的看成一个光滑的镜面,这样背板就能够减少光线的散射,从而在背板的表面能够形成镜面反射,边条设置在触摸屏本体的另外几条边上。 [0030] In the present embodiment, the touch screen surface of the back plate of the body is smooth, can be approximated as a smooth mirror, so that the back plate of the scattered light can be reduced, thereby forming the specular reflection surface of the backplate, strip edge provided several additional touch panel body. 边条是突出触摸屏本体设置的,为了便于解释与说明,在这里将边条突出所述触摸屏本体的高度定义为边条的宽度。 Strip body is provided protruding the touch screen, for convenience of explanation and description, where the strip of the touch panel body projecting height is defined as the width of the strip. 遮挡物进入所述光学成像触摸屏,遮挡进入摄像头的光线,摄像头会拍摄到在边条上形成的有暗色断点的亮条实像,同时由于背板的表面是光滑的,形成镜面反射,摄像头同样可以捕捉到出现在背板中暗色断点的亮条的虚像,所以在本实施例中摄像头能够拍摄到的亮条宽度大大增加,为了获得最优的效果,边条可以垂直设置在所述触摸屏本体的边条上,有利于摄像头准确完整拍摄到在边条形成的亮条实像和在光滑背板形成的亮条虚像。 Covering entering the optical imaging touchscreen, the shutter into the camera's light, the camera will be taken to the highlight the real image formed on the edge strips with dark breakpoint, and because the surface of the backplate is smooth, mirror-reflection camera equally can capture a bright virtual image due to the appearance in the backplane dark breakpoint, so the camera in the present embodiment can capture a bright stripe width to be greatly increased, in order to obtain an optimal effect, edge strips may be vertically disposed on the touch screen the strip body, facilitate accurate and complete data captured by the camera is formed at the highlight side and the highlight bar real image is formed in a smooth backplane virtual image.

[0031] 本发明光学成像触摸屏,触摸屏背板的表面光滑能够形成镜面反射,这样摄像头不但能够拍摄到在边条上的亮条实像而且还能在拍摄到由于镜面反射形成的亮条的虚像,所以摄像头拍摄的亮条宽度就大大增加了,亮条宽度越大,则有效图像范围越大,得到的有效信号就越强。 [0031] The present invention is an optical imaging touchscreen, the surface of the touch screen backsheet smooth capable of forming a specular reflection, so that the camera can not only captured highlight bar on the strip a real image but also in the captured since the highlight the virtual image of the specular reflection is formed, Therefore, the width of the light bar taken by a camera is greatly increased, the larger the highlight width, the larger the effective image range, the more effective the resulting signal. 所以本发明光学成像触摸屏是一种结构简单、生产成本低廉且能有效增加有效信号强度的光学成像触摸屏。 Therefore, the present invention is an optical imaging touchscreen is a simple structure, low production cost and can effectively increase the effective signal strength of the optical imaging touchscreen.

[0032]另外,光学成像触摸屏需要一定强度的有效信号才能确保其正常工作,所以光学成像触摸屏中边条的宽度都会存在有一个最小值。 [0032] Further, an optical imaging touchscreen valid signal requires a certain strength to ensure proper operation, the optical imaging touchscreen strip width there will be a minimum. 本发明光学成像触摸屏中摄像头能够拍摄到亮条的实像和虚像,大大增加了摄像头拍摄到的亮条宽度,所以本发明光学成像触摸屏所需要边条宽度的最小值将大大减小。 The optical imaging of the present invention, the touch screen camera can capture the real image and virtual image light strip, greatly increasing the bright stripe width camera captured, the present invention is an optical imaging touchscreen required side minimum width of the strip will be greatly reduced.

[0033] 在其中一个实施例中,所述边条为表面贴附有反光层的反光边条。 [0033] In one embodiment, the reflecting strip is a strip attached to the surface with the reflective layer.

[0034] 边条上贴附有反光层,能够直接反射照射在边条上的光线,而不用另外设置其他发光源,易于实现。 [0034] The reflecting layer is adhered strip, can be directly reflected light impinging on the strip, without separately providing other sources, and easy to implement.

[0035] 在其中一个实施例中,所述边条为表面设置有发光源的发光边条。 [0035] In one embodiment, the strip is provided with a light emitting source emitting strip surface.

[0036] 边条上设置有发光源能够自主发光,不需要在摄像机一侧再设置其他反光源,简化了本发明光学成像触摸屏的结构。 Is provided with a light emitting source capable of autonomous luminescence [0036] The strip, do not need a light source disposed in the other anti-camcorder side, simplifying the structure of the present invention, an optical imaging touchscreen.

[0037] 如图2所示,在其中一个实施例中,所述触摸屏本体100和所述背板为矩形,所述边条300的数量为三个,所述边条300突出所述触摸屏本体100的高度为10毫米。 [0037] As shown in FIG. 2, in one embodiment, the touch panel body 100 and the back plate is rectangular, the edge strips 300 number is three, the projecting strip 300 of the touch panel body height 100 is 10 mm.

[0038] 在本实施例中,触摸屏本体设计为矩形,触摸屏本体包括四条边框,分别为第一边框110、第二边框120、第三边框130、第四边框140,边条有三个,分别为第一边条310、第二边条320、第三边条330,第一边条310设置在第一边框110上、第二边条320设置在第二边框120上、第三边条330设置在第三边框330上摄像头200设置在触摸屏本体的第四边框140上。 [0038] In the present embodiment, the touch screen is rectangular body design, the touch screen includes four frame body, respectively, a first frame 110, second frame 120, third frame 130, fourth frame 140, there are three edge strips, respectively, Article first side 310, second side panel 320, third side 330, first side bar 310 disposed on the first frame 110, second strip 320 is provided on the second frame 120, a third strip 330 is disposed on the third frame 330 in the camera frame 200 disposed on the fourth touch panel body 140. 由于现有的触摸屏多数为矩形,这样设置有利于本发明光学成像触摸屏的推广。 Since most conventional touch screen is rectangular, it arranged such conducive to the promotion of the present invention an optical imaging touchscreen. 边条突出触摸屏本体的高度为10毫米,即边条形成的亮条实像宽度也为10毫米。 Touch screen height of the body projecting edge strips of 10 mm, i.e., the highlight strip width is also formed by the solid image of 10 mm. 边条10毫米的高度设置是兼顾光学成像触摸屏基本工作性能和生产成本获得的值,当然这个还可以根据光学成像触摸屏实际应用的需求进行更换,例如6毫米、8毫米或者12毫米。 Strip height 10 millimeters is provided an optical imaging touchscreen value of both performance and cost substantially obtained, of course, this can also be replaced according to the needs of practical application of optical imaging touchscreen, for example, 6 mm, 8 mm or 12 mm.

[0039] 在其中一个实施例中,所述摄像头为红外摄像头。 [0039] In one embodiment, the camera is an infrared camera.

[0040] 红外摄像头是一种非常常见的摄像头,其具有高效率、低功耗、长寿命等特点,在本实施例中选取红外摄像头作为本发明光学成像触摸屏的摄像头能有效提升本发明光学成像触摸屏的整体性能和使用寿命,另外由于红外摄像头技术成熟这样也在一定程度了降低了本发明光学成像触摸屏的生产成本和维护难度。 [0040] The infrared camera is a very common camera, which has a high efficiency, low power consumption, long life, select the infrared camera in the present embodiment, as the camera optical imaging touchscreen of the present invention can effectively enhance the optical imaging of the present invention overall performance and service life of the touch screen, since the addition of such infrared camera technology is mature to a certain extent the production cost is reduced according to the present invention, an optical imaging touchscreen, and maintenance difficulty.

[0041] 如图3所示,一种加强光学成像触摸屏有效信号加强方法,所述触摸屏本体的一边两角上分别设置摄像头,所述触摸屏本体的其它边条上设置边条,所述触摸屏本体的背板表面为光滑表面; [0041] As shown in FIG 3, an optical imaging touchscreen strengthening method strengthening the valid signal, the touch are provided on the camera body side corners of the screen, the touch strip is provided on the other side of the screen body, the touch screen body the backplate surface is a smooth surface;

[0042] 所述光学成像触摸屏有效信号加强方法包括步骤: [0042] The optical imaging touchscreen effective reinforcing signal comprising the steps of:

[0043] S400:通过所述摄像头拍摄获取所述边条形成的亮条实像和所述边条在所述触摸屏本体的背板表面形成的亮条虚像; [0043] S400: photographed by the camera acquires the light bar strip formed by the real and the highlight bar strip formed in the surface of the back plate of the touch screen a virtual image of the body;

[0044] S500:根据所述亮条实像和所述亮条虚像获取光学成像触摸屏的有效信号。 [0044] S500: the real image and said bright acquired image signal VCs active optical imaging touch screen according to the light bar.

[0045] 本发明光学成像触摸屏有效信号加强方法,触摸屏本体的一边两角上分别设置摄像头,触摸屏本体的其它边条上设置边条,边条为表面贴附有反光层的边条,触摸屏本体的背板表面为光滑表面使其能够形成镜面反射,摄像头拍摄到在边条上的亮条实像和由于镜面反射形成的亮条的虚像,整合亮条实像和亮条虚像,获得增宽亮条图像,根据整合增宽后的亮条图像获得加强的光学成像触摸屏有效信号。 [0045] The optical imaging of the present invention is a touch screen active signal strengthening method, are provided on the side of the corners of the touch screen body camera provided side bar on the other side of touch screen body, strip of surface mount strip with reflecting layer, the touch screen body the backplate surface is a smooth surface so that it is possible to form the specular reflection, the camera captured the highlight bar on the strip of real and since the virtual image light bar specular reflection is formed, to integrate the highlight real and the highlight the virtual image obtained widened highlight bar image, to obtain an optical imaging touchscreen valid signal in accordance with the highlight bar to strengthen the integration of image broadening.

[0046] 如图4所示,在其中一个实施例中,所述步骤S400具体包括: [0046] As shown in FIG. 4, in one embodiment, the step S400 comprises:

[0047] S420:通过所述摄像头拍摄获取所述边条的亮条图像; [0047] S420: captured by the camera to obtain an image of the light bar of the strip;

[0048] S440:定义所述边条突出所述触摸屏本体的背板表面的方向为上,将所述亮条图像中上半部分识别为所述边条形成的亮条实像,所述亮条图像中下部分识别为所述边条在所述触摸屏本体的背板表面形成亮条虚像。 [0048] S440: projecting direction of the back plate of the body surface of the touchscreen of the strip is defined on the image of the light bar in the upper half of the real image is recognized as the highlight of the strip forming the highlight bar identifying a lower portion of the image to the highlight of the strip forming the virtual image of the touch screen surface of the backing plate body.

[0049] 为了便于解释说明,这里定义边条突出触摸屏本体的背板表面的方向为上。 [0049] For convenience of explanation, the direction of the surface of the backing plate body projecting touchscreen is defined herein as the edge strips. 其中,将亮条图像中上半部分识别为边条形成的亮条实像,亮条图像中下半部分识别为边条在触摸屏本体的背板表面形成亮条虚像,即当亮条图像的上方向为边条突出触摸屏本体的本背板表面的方向时,壳条实像在上,壳条虚像在下,壳条实像和壳条虚像的大小各为壳条图像的一半。 Wherein the highlight bar image the upper half is identified as the highlight bar strip formed by the solid image, the highlight image in the lower half is identified as strip forming the highlight virtual image back plate surface of the touch panel body, i.e. when the highlight image on when this back plate surface direction of the protruding direction of the touch screen body strip, shell virtual real image on the article, as the lower housing section, the size of the virtual image of the real image and the shell casing article strips of each half-shell of the bar image.

[0050] 在本实施例中,增加了识别亮条图像中哪部分图像是亮条实像、哪部分是亮条虚像的步骤,识别出了亮条实像和亮条虚像,就能更精准定位出触摸物在触摸平面上的位置。 [0050] In the present embodiment, increasing the recognition the highlight image in which the partial image is the highlight the real image, which part is a step of the highlight virtual image, identifying a highlight bar real and the highlight the virtual image can be more accurately locate the touch position on the touch object plane.

[0051] 如图4所示,在其中一个实施例中,所述步骤S500具体包括: [0051] As shown in FIG. 4, in one embodiment, the step S500 comprises:

[0052] S520:分别计算所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值; [0052] S520: calculating a weighted average of gradation values ​​of the real image of the light bar, and a virtual image of the gray value of the light bar are weighted average;

[0053] S540:根据所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值绘制能量波形图; [0053] S540: The drawing energy waveform diagram weighted average of the weighted average of gradation values ​​of the highlight real image, a virtual image and the gradation values ​​of the light bar;

[0054] S560:通过绘制的所述能量波形图获取所述光学成像触摸屏的有效信号。 [0054] S560: FIG obtain a valid signal of the optical imaging touch screen by drawing a waveform of the energy.

[0055] 在处理亮条图像定位触摸点位置时,分别计算亮条实像和亮条虚像的灰度值的加权平均值,绘制能量波形图,当有触摸时,触摸物体遮挡住光线的区域的能量就会很小甚至没有能量,就会在能量波形图中产生能量波形凹坑,这个能量波形凹坑的位置就是触摸物体所在的角度,根据多个摄像头所拍到的触摸位置的角度,用三角函数可以算出触摸物在触摸平面上的二维坐标。 [0055] When processing the highlight bar is positioned touch point image, calculates the highlight real image weighted average gradation value and the virtual image of the light bar, drawing energy waveform diagram when a touch, touch object blocking the light area energy will be little or no energy, wave energy is generated in the waveform of FIG pits energy, this energy wave pit position angle of the touch object is located, according to the plurality of cameras to take the position angle of the touch with a trigonometric function can be calculated two-dimensional coordinates of a touch on the touch object plane. 由于之前绘制能量波形图是根据亮条实像和亮条虚像灰度值的加权平均值绘制的,所以绘制出的能量波形图更加精准,能量波形巨坑的位置和数据也会更加准确,从而能够更加精准定位出触摸物在触摸平面上的位置。 Since the energy before drawing is a waveform diagram drawn according to a weighted average of the highlight real and virtual images of the highlight tone value, the energy waveform drawing out more precise, the energy waveform data and giant pit position will be more accurate, it is possible to positioning more accurate position of the touch on the touch object plane.

[0056] 在其中一个实施例中,所述边条为表面贴附有反光层的反光边条。 [0056] In one embodiment, the reflecting strip is a strip attached to the surface with the reflective layer.

[0057] 以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。 [0057] The above embodiments are only expressed several embodiments of the present invention, and detailed description thereof is more specific, but can not therefore be understood as limiting the scope of the present invention. 应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。 It should be noted that those of ordinary skill in the art, without departing from the spirit of the present invention, can make various changes and modifications, which fall within the protection scope of the present invention. 因此,本发明专利的保护范围应以所附权利要求为准。 Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

  1. 1.一种光学成像触摸屏,其特征在于,包括触摸屏本体、摄像头和多个边条,所述摄像头设置于所述触摸屏本体的一边两角上,所述边条设置于所述触摸屏本体的其它边上,所述触摸屏本体的背板表面为光滑的表面,所述触摸屏本体的背板的表面能够形成镜面反射。 An optical imaging touchscreen, wherein the touchscreen comprises a body, a plurality of edge strips and the camera, the camera is provided on both corners on one side of the touch panel body, the strip is provided on the other body touchscreen the edge of the touch screen surface of the backing plate body is a smooth surface, the touch surface of the panel body can be formed of the backsheet specular reflection.
  2. 2.根据权利要求1所述的光学成像触摸屏,其特征在于,所述边条为表面贴附有反光层的反光边条。 2. The optical imaging touchscreen according to claim 1, wherein said strip is a surface with reflective tape strip reflecting layer.
  3. 3.根据权利要求1所述的光学成像触摸屏,其特征在于,所述边条为表面设置有发光源的发光边条。 The optical imaging touchscreen according to claim 1, characterized in that the strip is provided with a light emitting surface of the light emitting source edge strip.
  4. 4.根据权利要求1或2或3所述的光学成像触摸屏,其特征在于,所述触摸屏本体和所述背板为矩形,所述边条的数量为三个,所述边条突出所述触摸屏本体的高度为10毫米。 4. The optical imaging touchscreen 1 or claim 2 or claim 3, wherein said touch panel body and the back plate is rectangular, the number is three edge strips, said edge strips projecting the the body height of the touch screen is 10mm.
  5. 5.根据权利要求1或2或3所述的光学成像触摸屏,其特征在于,所述摄像头为红外摄像头。 The optical imaging touchscreen 1 or claim 2 or claim 3, wherein said camera is an infrared camera.
  6. 6.一种光学成像触摸屏有效信号加强方法,其特征在于,所述触摸屏本体的一边两角上分别设置摄像头,所述触摸屏本体的其它边条上设置边条,所述触摸屏本体的背板表面为光滑表面,所述触摸屏本体的背板的表面能够形成镜面反射; 所述光学成像触摸屏有效信号加强方法包括步骤: 通过所述摄像头拍摄获取所述边条形成的亮条实像和所述边条在所述触摸屏本体的背板表面形成的亮条虚像; 根据所述亮条实像和所述亮条虚像获取光学成像触摸屏的有效信号。 An optical imaging touchscreen effective method to strengthen signal, wherein the touch are provided on the camera body side corners of the screen, the touch strip is provided on the other side of the screen body, the touch screen surface of the back plate of the body a smooth surface, the touch surface of the panel body can be formed of a specular reflection backsheet; the optical imaging touchscreen effective reinforcing signal comprising the steps of: obtaining captured by the camera of the light bar strip formed by the real and strip light bar is formed in the surface of the back plate of the touch screen a virtual image of the body; according to the real and the highlight bar to the bright virtual image valid signal acquiring optical imaging touchscreen.
  7. 7.根据权利要求6所述的光学成像触摸屏有效信号加强方法,其特征在于,所述步骤通过所述摄像头拍摄获取所述边条形成的亮条实像和所述边条在所述触摸屏本体的背板表面形成的亮条虚像具体包括: 通过所述摄像头拍摄获取所述边条的亮条图像; 定义所述边条突出所述触摸屏本体的背板表面的方向为上,将所述亮条图像中上半部分识别为所述边条形成的亮条实像,所述亮条图像中下部分识别为所述边条在所述触摸屏本体的背板表面形成亮条虚像。 7. The optical imaging touchscreen reinforcing valid signal according to a method as claimed in claim 6, wherein said step of acquiring said imaging light bar strip formed by the real and strip in the touch screen using the camera body Article bright virtual image formed on the surface of the back plate comprises: photographing by the camera to obtain an image of the light bar strip; defining the projection direction of the strip surface back plate body is on the touch screen, the highlight bar upper half of the image is identified as a bright real image of the bar strip formed in said identifying the highlight image portion of the strip is formed as a virtual image in the highlight of the touch screen surface of the backing plate body.
  8. 8.根据权利要求7所述的光学成像触摸屏有效信号加强方法,其特征在于,所述步骤根据所述亮条实像和所述亮条虚像获取光学成像触摸屏的有效信号具体包括: 分别计算所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值; 根据所述亮条实像的灰度值的加权平均值,及所述亮条虚像的灰度值的加权平均值绘制能量波形图; 通过绘制的所述能量波形图获取所述光学成像触摸屏的有效信号。 The optical imaging signals effective ways of strengthening the touch screen according to claim 7, wherein said highlight bar to the steps of the real and the virtual image of the light bar to obtain a valid signal of the optical imaging touch screen comprises: calculate the weighted average of gradation values ​​of the real image of the highlight, and the weighted average value of the highlight gradation virtual image; weighted average according to the gradation values ​​of the highlight real image and the virtual image of the bright gray bar weighted average of the values ​​of a waveform plotted in FIG energy; acquiring the valid signal by the optical imaging touchscreen waveform diagram of the energy plotted.
  9. 9.根据权利要求6或7或8所述的光学成像触摸屏有效信号加强方法,其特征在于,所述边条为表面贴附有反光层的反光边条。 9. A method of reinforcing an optical imaging touchscreen 6 or 7 or the valid signal according to claim 8, wherein said strip is a surface with reflective tape strip reflecting layer.
  10. 10.根据权利要求6或7或8所述的光学成像触摸屏有效信号加强方法,其特征在于,所述边条为表面设置有发光源的发光边条。 10. The method of reinforcing an optical imaging touchscreen 6 or 7 or the valid signal according to claim 8, characterized in that the strip is provided with a light emitting source emitting strip surface.
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