CN100468303C - Touch screen and method to detect whether an object is exist relative to the touch screen optically - Google Patents

Touch screen and method to detect whether an object is exist relative to the touch screen optically Download PDF

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CN100468303C
CN100468303C CN 200480009926 CN200480009926A CN100468303C CN 100468303 C CN100468303 C CN 100468303C CN 200480009926 CN200480009926 CN 200480009926 CN 200480009926 A CN200480009926 A CN 200480009926A CN 100468303 C CN100468303 C CN 100468303C
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screen
light
light source
camera
object
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CN 200480009926
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CN1774692A (en
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约翰·戴维·牛顿
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奈克斯特控股公司
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen

Abstract

公开了一种触摸屏,其包括位于屏幕的一个或多个边缘处的光源,所述光源用于指引光线通过所述屏幕的表面。 Discloses a touch screen, comprising a light source at one or more edges of the screen, the light source for directing light through the surface of the screen. 至少两个相机位于屏幕的外围,所述至少两个相机接收该光源产生的光线。 At least two cameras located at the periphery of the screen, the camera receives the at least two light rays generated by the source. 处理器电连接到相机并且接收来自所述相机的信号数据输出,其表示由于存在接近于屏幕的物体而引起的通过屏幕的检测光强差。 The processor is electrically connected to the camera and receives the data signal output from the camera, which detects the presence of the object representing the screen close to the screen caused by the difference in light intensity. 处理器对接收的相机数据应用多个处理步骤,例如数学三角测量技术,以确定接近于屏幕的物体的位置。 A plurality of processing steps of the camera processors received application data, such as mathematical triangulation techniques to determine the position of an object close to the screen. 通过检测由于物体而引起的直射光的存在与否,以检测由于所述物体而引起的发射光是否存在,从而使用相机探测接近于屏幕的物体的存在,其中所述物体碰撞到由使用屏幕表面作为镜子的光源产生的通过屏幕的光线。 By detecting the presence of the direct light due to the absence of the object due to the object detecting emission caused due to the presence or absence of light, so that the camera used to detect the presence of an object near the screen, wherein the screen used by a collision with an object to a surface as the light source produced by the mirror screen.

Description

触摸屏及光学探澜物体相对于触摸屏是否存在的方法发明领域 Touch screen and the object relative to the optical probe method Lan presence or absence of a touch screen INVENTION Field

本发明涉及触摸感应屏,尤其涉及通过使用信号处理,光学探测物体的存在。 The present invention relates to a touch sensitive screen, particularly to the presence of a signal processing by using the optical detection of objects.

技术背景 technical background

现有技术的触摸屏具有五种主要形式。 Art touch screen has five main forms. 触摸屏输入器件的这五种 The five touch-screen input device

形式包括电阻式、电容式、表面声波(SAW)式、红外(IR)式、以及光学式。 Forms include resistive, capacitive, surface acoustic wave (SAW), infrared (IR) type, and optical type. 每一种触摸屏类型都有其自身特性、优势和劣势。 Each touch screen type has its own characteristics, strengths and weaknesses.

电阻式为触摸屏技术中最常用的类型。 Resistive touch screen technology is most common type. 它是在许多触摸屏应用中发现的低成本解决方案,其中触摸屏应用包括手持计算机、PDA、消费电子产品、以及零售点应用。 It is found in many touch screen applications in low-cost solutions, touch screen applications including handheld computers, PDA, consumer electronics, and retail applications. 电阻式触摸屏使用控制器和显示面上的特定涂附玻璃覆层,形成触摸连接。 Resistive touch screen controller and display using a specific surface coated glass cladding layer, forming a touch connection. 电阻式覆层的主要类型为4线、 5线、以及8线。 The main types of resistive coating line 4, line 5, and 8 lines. 5线和8线技术对于制造和校准来说是更昂贵的, 而四线提供更低的图像清晰度。 5 and 8-wire technologies for the manufacture and calibration is more expensive, while the four line provides lower image clarity. 通常给出两个选择:抛光或防炫光。 Typically given two choices: polished or anti-glare. 抛光提供清晰图像,但通常引入炫光。 Polished to provide a clear picture, but generally the introduction of glare. 防炫光使炫光最小化,但也将会进一步使光发散,从而降低清晰度。 That the anti-glare minimize glare, but will also further diffuse the light, thereby reducing sharpness. 使用电阻式显示器的一个好处是可以通过手指(戴手套或不戴手套)、钢笔、触针、或硬物来使用它。 One benefit of using a resistive display is possible by a finger (gloved or without gloves), pen, stylus or hard object to use it. 然而,由于电阻膜层造成的图像清晰度的下降,以及其对刮擦的敏感性,电阻式显示器在公共环境中的效率更低。 However, a reduction in image sharpness caused due to the resistance layer, as well as their susceptibility to scratching, resistance lower efficiency in public display environment. 不管在商业上如何(trade-off),因为相对较低的价格(更小的屏幕尺寸),以及利用一系列输入装置(手指、手套、硬质和软质触针)的能力,电阻式屏幕是最普及的技术。 Regardless (trade-off), because of the relatively low price (smaller screen sizes), and the use of a series of input means (fingers, gloves, hard and soft stylus) the ability to screen commercially resistance It is the most popular technology.

电容式触摸屏是全玻璃的,为使用在ATM以及类似书报亭等的类型应用而设计。 The capacitive touch screen is full of glass, for use in ATM and similar kiosk type applications like design. 电路位于屏幕的边角,小电量在屏幕中流转,领懂接触覆层的人的电容。 Circuit corners of the screen, a small screen in the power flow, leading to understand human touch coating capacitance. 对屏幕的接触中断电流,并激活运行书报亭的软件。 Exposure to the screen interrupts the current and activates the run kiosk software. 因为可以密封玻璃和将其装配在监视器上的玻璃框,所以触摸屏是耐用的,而且防水、防土和防尘。 Because the sealing glass and can be fitted on the monitor bezels, the touch screen is durable and waterproof, soil and dust. 这使它通常使用在更苛刻的环境中,像游戏、贩卖零售显示、公共书报亭以及工业应用。 This makes it commonly used in harsher environments like gaming, selling retail displays, public kiosks and industrial applications. 然而,只能通过人的手指和戴手套的手指的触摸来激活电容式触摸屏,钢笔、 触针或硬物是不起作用的。 However, only by touching a finger of a human finger and gloved to activate the capacitive touch screen, a pen, stylus or hard object does not work. 因此,在许多应用中,包括医疗和食物准备,是不适合使用它的。 Therefore, in many applications, including medical and food preparation, it is not suitable to use it.

表面声波(SAW)式技术提供更好的图像清晰度,因为它使用全玻璃结构。 A surface acoustic wave (SAW) technology provides better image Formula clarity because it uses all-glass structure. SAW触摸屏使用玻璃显示器覆层。 SAW touch screen display glass coating. 声波在显示表面传播。 Acoustic wave propagating surface of the display. 通过沿覆层边缘的反射器阵列的反射,每一声波传播通过屏幕。 Reflected by the array along the edge of the cladding, the acoustic wave propagates through each screen. 两个接收器探测声波。 Two receiver detects the acoustic wave. 当用户接触玻璃表面时,用户的手指吸收一定能量的声波,控制器电路测量接触位置。 When the user touches the glass surface, the user's finger absorb some acoustic energy, the controller circuit for measuring contact position. SAW触摸屏技术用于ATM、游乐园、银行和金融应用以及书报亭。 SAW touch screen technology for ATM, amusement parks, banking and financial applications, and Newsstand. 该技术不能固定密封,并因此不适用于许多工业和商业应用。 The sealing technique is not fixed, and therefore not suitable for many industrial and commercial applications. 比较电阻和电容式技术,它提供较高的图像清晰度、分辨率、以及更高的光透射性。 Comparison of resistive and capacitive technologies, it provides higher image clarity, resolution, and higher light transmission.

红外式技术依赖于在显示屏前对红外光栅格的中断。 Infrared technology relies on the interruption of the infrared grating grid in front of the display. 触摸框架或光矩阵框架包含一排红外LED和光电晶体管;每个装配在两个相对面上,以生成不可见的红外光栅格。 The touch frame or frame comprises an array of optical matrix infrared LED and phototransistor; each assembly in two opposing faces, to generate a invisible infrared raster grid. 框架组件包括印刷线路板,其中光电器件装配在线路板上,且框架集合隐藏在红外透明玻璃框之后。 The frame assembly includes a printed wiring board, wherein the photovoltaic device mounted on the circuit board, and the frame after the set hidden infrared-transparent bezel. 玻璃框保护光电器件免受操作环境的影响,同时允许红外光束通过。 Bezel protect the photovoltaic device from the operating environment while allowing the infrared beams through. 红外控制器连续脉动LED产生红外光束栅格。 Infrared LED controller continuously generating pulsating infrared beam grid. 当触针,例如手指进入栅格时,它就遮挡了光束。 When the stylus, for example, the finger enters the grid, it obscured the beam. 一个或多个光电晶体管探测到没有光, 并发射识别x和y坐标的信号。 One or more phototransistors detect the absence of light, and emits the identification signals x and y coordinates. 红外式触摸屏经常用于制造和医疗应用,因为它们可以完全密封,并使用任何数量的硬质或软质物体来操作。 Infrared touch screens are often used in manufacturing and medical applications because they can be completely sealed, and any number of hard or soft objects to operate. 红外式的主要问题是触摸框架是轻微地"坐"在屏幕之上的。 Infrared main problem is the touch frame is slightly "sitting" on top of the screen. 因此,在手指或触针实际接触到屏幕之前,它易受"过早激活"的影响。 Therefore, before actual contact finger or stylus to the screen, it is susceptible to "premature active". 制造红外玻璃框的成本也是相当高的。 The cost of manufacturing an infrared bezel is quite high.

触摸屏的光学成像使用线扫描相机、数字信号处理、前向或后向照明以及算法的组合,来确定触点。 Optical imaging touch screen using a line-scan cameras, digital signal processing, the forward or combined illumination and algorithms to determine the contact. 通过沿显示表面扫描,成像透镜对用户的手指、触针或物体成像。 Scanning the display surface, the imaging lens of the user's finger, stylus, or along the imaged object. 由于移动的阴影和亮光,这种触摸屏类型易受误读取的影响,同时要求在进行读取前触摸屏幕。 Since the movement of light and shadow, this type of touch screen is susceptible to erroneous read, while reading is performed before the required touch screen. 已经做出尝试去克服这些劣势。 Attempts have been made to overcome these disadvantages. 使用光学成像技术的触摸屏在以下出版物中公开。 Using optical imaging touch screens disclosed in the following publications.

使用数字环境光采样的触摸屏在US4943806中公开,具体地, 该专利公开了一种触摸输入器件,可以持续采样和存储环境光读取信息,并与先前进行的读取进行比较。 Using digital ambient light sampling is disclosed in US4943806 in the touch screen, in particular, this patent discloses a touch input device, it can continue to sample and store the ambient light information is read and compared with the previous reading performed. 这样使亮光和阴影的效果最小化。 This allows the light and shadow effects minimized.

与计算机系统共同使用的触摸屏在US5914709中公开。 Together with a computer system using touch screen disclosed in US5914709. 具体地, 公开了使用阈值调整处理,对触摸敏感的用户输入器件。 In particular, discloses the use of the threshold adjustment process, touch sensitive user input device. 读取光强值, 并建立"开"阈值,频繁且周期性地执行该阈值测量与调整。 Read light intensity value, and the establishment of "ON" threshold, frequently and periodically performed measurement and adjustment of the threshold value.

美国专利号5317140专利公开一种方法,用于光学确定触摸屏显示器上物体的位置和方向。 U.S. Patent No. 5,317,140 discloses a method for optically determining the position and orientation of the object on the touch screen display. 具体地,散射体置于光源之上,产生触摸屏上的平均光强。 Specifically, the scattering body disposed above the light source, producing an average light intensity on the touch screen.

美国专利号5698845公开一种触摸屏显示器,使用光探测装置, 以两倍的商用AC线光源频率,调制光发射器的开/关频率。 U.S. Patent No. 5,698,845 discloses a touch screen display, using the light detection means, at twice the commercial AC line source frequency, modulation of the light emitter on / off frequency. 接收器确定存在的光,并与透射的实际信号比较。 The receiver determines the presence of light, and compared with the actual signal transmitted.

美国专利号4782328公开一种触摸屏,使用光传感器单元,置于触摸屏上方的预定高度处,并且当指示物接近触摸屏时,其反射或遮蔽的环境光束使得其被感知到。 U.S. Patent No. 4,782,328 discloses a touch panel, an optical sensor unit is placed at a predetermined height above the touch screen, and when the pointer approaches the touch screen, which is reflected or shadowed ambient light beam such that it is perceived.

美国专利号4868551公开一种触摸屏,通过探测指示物反射回来的光(反射或散射),可以探测接近显示器表面的指示物。 U.S. Patent No. 4,868,551 discloses a touch screen, the pointer by detecting reflected light (reflected or scattered) may be detected near the surface of the display pointer.

发明内容 SUMMARY

本发明的一个目标是提供一种触摸敏感屏幕,用于以某种方式克服所述劣势,或至少向公众提供有益的选择。 An object of the present invention is to provide a touch-sensitive screen, for in some way to overcome the disadvantages, or to provide at least a useful choice to the public.

依照本发明第一个方面,可以广义地认为本发明在于一种触摸显示器,其中该触摸显示器包括: According to a first aspect of the present invention, it can be broadly considered present invention consists in a touch display, wherein the touch display comprises:

让用户在其上或其中触摸并观看图像的屏幕; Allowing users to touch the screen and watch the image thereon or therein;

在所述屏幕的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面; In the light source at one or more edges of the screen, the light source across the surface of the light guide of the screen;

至少两个具有输出信号的相机,所述每个相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出信号包括扫描图像; At least two cameras having an output signal, each said camera located at the periphery of the screen, on the screen before the imaging space, the output signal comprises a scanned image;

处理所述输出信号以探测光的等级的装置,所述光包括: Processing the output signal level of the light detecting means, said light comprising:

所述光源发出的直接光,和/或 Direct light emitted from the light source, and / or

从所述光源反射的光; Light reflected from the light source;

接收所述相机处理过的输出信号的处理器,所述处理器利用三角测量技术以及所述已处理的输出信号,确定己处理的输出信号是否指明接近所述屏幕的物体的存在,而且如果是肯定的话,确定所述物体的位置。 The camera receives the processed output signal of said processor, said processor using triangulation techniques and said processed output signal, determines whether the output signal has processing indicates the presence of an object approaching the screen, but if it is yes, determine the position of the object.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的相对方位。 Preferably said processed output signal indicating the assumed position of the object with respect to the relative position of the camera.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的透镜中心的相对方位。 Preferably said processed output signal indicating the assumed position of the object relative to the orientation of the camera lens center.

优选为所述处理器以平面屏幕坐标确定所述物体的位置。 Preferably the processor determines the position of the object in the screen coordinate plane.

优选为所述光源在所述屏幕之后,被安排用于将光投射通过所述屏幕,而所述显示器包括,在每个边缘具有光源,在所述屏幕之前的光反射器,指引所述光源发射的光通过所述屏幕的表面。 Preferably the light source after the screen is arranged to project light through said screen and said display includes at each edge having a light source, a light reflector prior to the screen, the light guide the light emitted by the surface of the screen.

优选为^f述相机为线扫描相机,所述相^l输出信号包括扫描行上的信息,而所述处理器使用所述信息确定所述物体的位置。 ^ F preferably said camera is a line scan camera, the phase ^ l output signal includes the information on the scanning line, and the processor uses the information to determine the position of the object.

优选为所述触摸显示器包括: Preferably said touch display comprising:

调制所述光源发出的所述光线的装置,提供在所述相机的可成像 The light modulating apparatus of the emitted light, the camera may be provided in the image forming

范围内的频带; Band range;

排除所述频带之外的图像数据的装置。 It means outside the band of the image data exclusion.

优选为所述用于处理所述输出信号的装置包括所述排除所述频带之外的图像数据的装置,而所述排除所述频带之外的图像数据的装置包括滤波功能。 Preferably said means for processing the output signal includes an image data other than the frequency band of the exclusion, the excluding device and the image data outside said frequency band comprises a filtering function.

优选为所述滤波功能包括应用从以下集合中选择的滤波器,该集合包括: Preferably said filtering includes applying a filter selected from the set, the set comprising:

梳状滤波器; Comb filter;

高通滤波器; A high pass filter;

陷波滤波器;以及 Notch filter; and

带通滤波器。 Bandpass filter.

优选为所述触摸显示器包括: Preferably said touch display comprising:

控制所述光源的装置;以及 Controlling the light source means; and

获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得; Means for obtaining and processing images, wherein the image in the non-light emitting state, and ambient light emission state is obtained;

其中在探测光的等级之前,所述处理所述输出信号的装置从发光状态中减去环境光状态。 Wherein the level before the probe light, the signal processing means by subtracting the output state of the ambient light from the light emitting state.

优选为所述光源为LED,而所述触摸显示器包括控制所述光源的部分工作的装置,其中光源的该部分独立于所述光源其他部分。 The light source is preferably an LED, a display apparatus includes a control part of the work of the light source and the touch, wherein the portion of said light source independent of other portions.

优选为控制所述光源的部分工作的装置包括独立控制所述光源的有效强度的装置。 Operating means preferably controls the light source section comprises means independently controlling the effective intensity of the light source.

优选为所述控制所述光源的部分的装置包括对所述部分反相布线,并使用桥式驱动器来驱动。 The apparatus is preferably part of the light source comprises controlling the inverter wiring portion, and a bridge used to drive the drive.

优选为控制所述光源的部分的装置包括使用对角桥式驱动器。 Device section preferably controls the light source comprises using a diagonal bridge drive.

优选为控制所述光源的部分的装置包括为被控制的每个部分使用移位寄存器。 Device section preferably controls the light source comprises using a shift register for each section to be controlled.

优选为所述获得和处理图像的装置包括控制所述光源的部分和所述每个相机,而所述处理所述输出信号的装置包括处理信息,确定所述部分是照亮发光的还是未发光的。 Preferably the obtaining and processing of images of the light source apparatus includes a control portion and each of said camera, and said output of said signal processing means comprises a processing information, the determining section is illuminated to emit light or not emitting of.

优选为接收图像时,某些部分是发光的,而其他是不发光的。 Preferably the image is received, some of the light emitting portion, while the other is not emitting light.

依照本发明第二个方面,可以广义地认为本发明在于触摸显示器,其中该触摸显示器包括: According to a second aspect of the present invention, the present invention can be broadly considered that a touch display, wherein the touch display comprises:

让用户在其上或其中触摸并观看图像的屏幕; Allowing users to touch the screen and watch the image thereon or therein;

在所述屏幕的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面; In the light source at one or more edges of the screen, the light source across the surface of the light guide of the screen;

至少两个位于所述屏幕外围、具有输出信号的相机,定位所述相机,使得其不接收所述光源发出的直接光,所述每个相机对所述屏幕之前的空间成像,所述输出信号包括扫描图像; At least two in the periphery of the screen, an output signal of the camera, positioning the camera, so that it does not directly receive light emitted from said light source, each said camera imaging the space prior to said screen, said output signal including a scanned image;

处理所述输出信号以探测反射光的等级的装置;以及 To detect the reflected light level means for processing said output signal;

接收所述相机处理过的输出信号的处理器,所述处理器利用三角测量技术以及所述已处理的输出信号,确定已处理的输出信号是否指明接近所述屏幕的物体的存在,而且如果是肯定的话,指明所述物体 The camera receives the processed output signal of said processor, said processor using triangulation techniques and said processed output signal, determines whether the processed output signal indicates the presence of an object approaching the screen, but if it is in the affirmative, indicating that the object

的位置。 s position.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的相对方位。 Preferably said processed output signal indicating the assumed position of the object with respect to the relative position of the camera.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的透镜中心的相对方位。 Preferably said processed output signal indicating the assumed position of the object relative to the orientation of the camera lens center.

优选为所述处理器以平面屏幕坐标确定所述物体的位置。 Preferably the processor determines the position of the object in the screen coordinate plane.

优选为所述触摸显示器包括: Preferably said touch display comprising:

调制所述光源发出的所述光线的装置,提供在所述相机的可成像范围内的频带; Means modulating said light emitted from said light source to provide a frequency band within the imageable range of the camera;

排除所述频带之外的图像数据的装置。 It means outside the band of the image data exclusion.

优选为所述用于处理所述输出信号的装置包括所述排除所述频带之外的图像数据的装置,而所述排除所述频带之外的图像数据的装置包括滤波功能。 Preferably said means for processing the output signal includes an image data other than the frequency band of the exclusion, the excluding device and the image data outside said frequency band comprises a filtering function.

优选为所述滤波功能包括应用从以下集合中选择的滤波器,该集合包括: Preferably said filtering includes applying a filter selected from the set, the set comprising:

梳状滤波器; Comb filter;

高通滤波器; A high pass filter;

陷波滤波器;以及 Notch filter; and

带通滤波器。 Bandpass filter.

优选为所述触摸显示器包括: 控制所述光源的装置;以及 Preferably said touch display comprising: the light source control means; and

获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得; Means for obtaining and processing images, wherein the image in the non-light emitting state, and ambient light emission state is obtained;

其中在探测光的等级之前,所述处理所述输出信号的装置从发光状态中减去环境光状态。 Wherein the level before the probe light, the signal processing means by subtracting the output state of the ambient light from the light emitting state.

优选为所述光源为LED,而所述触摸显示器包括控制所述光源的部分工作的装置,其中该部分独立于所述光源其他部分。 The light source is preferably an LED, a display apparatus includes a control part of the work of the light source and the touch, wherein the portion of said light source independent of other portions.

优选为控制所述光源的部分工作的装置包括独立控制所述光源的有效强度的装置。 Operating means preferably controls the light source section comprises means independently controlling the effective intensity of the light source.

优选为控制所述光源的部分的装置包括对所述部分反相布线,并 Device section preferably controls the light source comprises wiring said inverter section, and

使用桥式驱动器来驱动。 Use bridge driver to drive.

优选为控制所述光源部分的装置包括使用对角桥式驱动器。 Preferably a part of the control device of the light source comprises using a diagonal bridge drive.

优选为控制所述光源的部分的装置包括使用对角桥式驱动器。 Device section preferably controls the light source comprises using a diagonal bridge drive.

优选为控制所述光源的部分的装置包括为被控制的每个部分使 Preferably a part of the control apparatus includes the light source being controlled for each section

用移位寄存器。 Shift register.

优选为所述获得和处理图像的装置包括控制所述光源的部分和所述每个相机,而所述处理所述输出信号的装置包括处理信息,确定所述部分是发光的还是不发光的。 Preferably the obtaining and processing of images of the light source apparatus includes a control portion and each of said camera, and said output of said signal processing means comprises a processing information, the determining portion is a luminescent or non-luminescent.

优选为获得图像时,某些部分是发光的,而其他是不发光的。 Preferably the image is obtained, some parts of light emission, while the other is not emitting light.

优选为所述屏幕是反射式的,所述相机进一步对所述屏幕成像, 而所述处理输出信号的装置从镜像中探测光的等级。 Preferably said screen is reflective, said camera further the imaging screen, and the level of light output of the processing means of the detection signal from the mirror.

优选为所述己处理的输出信号指明假定的物体相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 Preferably the output signal is assumed to have the processing specified object relative to the distance between the camera and the relative position of the object and the screen.

依照本发明第三个方面,可以广义地认为本发明在于一种接收关于图像的用户输入信号的方法,其中该方法包括以下步骤: According to a third aspect of the present invention, the present invention can be broadly considered a method wherein the user input signal received image, wherein the method comprises the steps of:

提供让用户在其上或其中触摸并观看图像的屏幕; Provided so that the user touches the screen and watch the image thereon or therein;

在所述屏幕的一个或多个边缘处提供光源,所述光源指引光线通过所述屏幕的表面; A light source provided in said one or more edges of the screen, the light source through the light guide surface of the screen;

提供至少两个具有输出信号的相机,所述每个相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出信号包括扫描图像; Providing at least two cameras having an output signal, each said camera located at the periphery of the screen, on the screen before the imaging space, the output signal comprises a scanned image;

处理所述输出信号,探测光的等级,所述光包括: Processing the output signal level of the detection light, the light comprising:

所述光源发出的直接光,和/或 Direct light emitted from the light source, and / or

所述光源发出的反射光; The reflected light of the emitted light;

处理所述相机处理过的输出信号,利用三角测量技术获得所述物体的位置。 Processing the processed output signal of the camera, the position of the object using triangulation techniques.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的相对方位。 Preferably said processed output signal indicating the assumed position of the object with respect to the relative position of the camera.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的透镜中心的相对方位。 Preferably said processed output signal indicating the assumed position of the object relative to the orientation of the camera lens center.

优选为所述位置是平面屏幕坐标。 Preferably said coordinate position is a flat screen.

优选为所述光源在所述屏幕之后,被安排用于将光投射通过所述屏幕,而所述显示器包括,在每个边缘具有光源,在所述屏幕之前的光反射器,指引所述光源发射的光横跨所述屏幕的表面。 Preferably the light source after the screen is arranged to project light through said screen and said display includes at each edge having a light source, a light reflector prior to the screen, the light guide emitted light across the surface of the screen.

优选为所述相机为线扫描相机,所述相机输出信号包括扫描行上的信息,而所述处理器使用所述信息确定所述物体的位置。 Preferably the camera is a line scan camera, said camera output including information on the scanning signal lines, and the processor uses the information to determine the position of the object.

优选为所述方法包括以下步骤: Preferably said method comprising the steps of:

调制所述光源发出的所述光线的装置,提供在所述相机的可成像范围内的频带; Means modulating said light emitted from said light source to provide a frequency band within the imageable range of the camera;

排除所述频带之外的图像数据的装置。 It means outside the band of the image data exclusion.

优选为处理所述输出信号的步骤包括排除所述频带之外的图像数据的步骤,而所述排除所述频带之外的图像数据的步骤包括滤波。 Preferably said step of processing comprises the step of an output signal of the frequency band other than image data is excluded, and said excluding step other than the image data comprises filtering band.

优选为所述滤波包括应用从以下集合中选择的滤波器的步骤,该集合包括- Preferably said filtering comprises the step of applying a filter selected from the set, the set comprising -

梳状滤波器; Comb filter;

高通滤波器; A high pass filter;

陷波滤波器;以及 Notch filter; and

带通滤波器。 Bandpass filter.

优选为所述方法包括以下步骤: 控制所述光源,以及 Preferably said method comprising the steps of: controlling the light source, and

获得和处理图像,其中该图像在非发光的环境光状态以及发光状态获得; Obtaining and processing an image, wherein the image is obtained in a non-light emitting state, and ambient light emission state;

其中在探测光的等级之前,所述处理所述输出信号的步骤从发光状态中减去环境光状态。 Wherein prior to detecting light level, the processing step of subtracting the output signal from the ambient light state of the light emitting state.

优选为所述光源为LED,而所述触摸显示器包括控制所述光源的部分工作的装置,其中该部分独立于所述光源其他部分。 The light source is preferably an LED, a display apparatus includes a control part of the work of the light source and the touch, wherein the portion of said light source independent of other portions.

优选为控制所述光源的部分工作的步骤包括独立控制所述光源的有效强度。 Preferably the step of controlling the light source to the working portion comprises independently controlling the effective intensity of the light source.

优选为所述控制所述光源的部分的步骤包括对所述部分反相布线,并使用桥式驱动器来驱动。 Preferably said step of controlling the light source inverter comprises a wiring portion of said portion, and a bridge used to drive the drive.

优选为控制所述光源的部分的步骤包括使用对角桥式驱动器。 The step portion is preferably to control the light source comprises using a diagonal bridge drive.

优选为控制所述光源的部分的步骤包括为被控制的每个部分使用移位寄存器。 The step portion is preferably to control the light source comprises using a shift register for each section to be controlled.

优选为所述接收和处理图像的步骤包括控制所述光源的部分和所述每个相机,而所述处理所述输出信号的步骤包括处理信息,确定所述部分是发光的还是不发光的。 Preferably said step of receiving and processing images includes controlling the light source and the portion of each camera, and said step of processing the output signal includes the processing information, the determining portion is a luminescent or non-luminescent.

优选为获得图像时,某些部分是发光的,而其他是不发光的。 Preferably the image is obtained, some parts of light emission, while the other is not emitting light.

依照本发明第四个方面,可以广义地认为本发明在于一种接收关于图像的用户输入信号的方法,其中该方法包括以下步骤: According to a fourth aspect of the present invention, the present invention can be broadly considered a method wherein the user input signal received image, wherein the method comprises the steps of:

提供让用户在其上或其中触摸并观看图像的屏幕; Provided so that the user touches the screen and watch the image thereon or therein;

在所述屏幕的一个或多个边缘处提供光源,所述光源指引光线通过所述屏幕的表面; A light source provided in said one or more edges of the screen, the light source through the light guide surface of the screen;

提供至少两个位于所述屏幕外围、具有输出信号的相机,定位所述相机,使得其不接收所述光源发出的直接光,对所述屏幕之前的空间成像,所述输出信号包括扫描图像; Providing at least two at the periphery of the screen, an output signal of the camera, positioning the camera, so that it does not directly receive light emitted from said light source on said screen before the imaging space, the output signal comprises a scanned image;

处理所述输出信号以探测反射光的等级的装置;以及 To detect the reflected light level means for processing said output signal;

处理所述相机处理过的输出信号,利用三角测量技术以及所述已处理的输出信号,确定已处理的输出信号是否指明接近所述屏幕的物体的存在,而且如果是肯定的话,指明所述物体的位置。 Processing the camera output signals processed using triangulation techniques and said processed output signal, determines whether the processed output signal indicates the presence of the screen close to the object, and if yes, specifies that the object s position.

优选为所述己处理的输出信号指明假定的物体位置相对于所述相机的相对方位。 Preferably the output signal is assumed to have the processing object specified position with respect to the relative position of the camera.

优选为所述已处理的输出信号指明假定的物体位置相对于所述相机的透镜中心的相对方位。 Preferably said processed output signal indicating the assumed position of the object relative to the orientation of the camera lens center.

优选为所述处理器以平面屏幕坐标确定所述物体的位置。 Preferably the processor determines the position of the object in the screen coordinate plane.

优选为所述方法包括: Preferably said method comprising:

调制所述光源发出的所述光线的装置,提供在所述相机的可成像范围内的频带; Means modulating said light emitted from said light source to provide a frequency band within the imageable range of the camera;

排除所述频带之外的图像数据的装置。 It means outside the band of the image data exclusion.

优选为所述用于处理所述输出信号的装置包括所述排除所述频带之外的图像数据的装置,而所述排除所述频带之外的图像数据的装置包括滤波。 Preferably said means for processing the output signal includes an image data other than the frequency band of the exclusion, the excluding device and the image data outside said frequency band comprises filtering.

优选为所述滤波包括应用从以下集合中选择的滤波器,该集合包 The filter preferably comprises a filter application selected from a collection, the collection bag

括: include:

梳状滤波器; 高通滤波器; 陷波滤波器;以及带通滤波器。 Comb filter; a high pass filter; notch filter; and a band pass filter. 优选为所述方法包括: 控制所述光源的装置;以及 Preferably said method comprising: controlling the light source means; and

获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得; Means for obtaining and processing images, wherein the image in the non-light emitting state, and ambient light emission state is obtained;

其中在探测光的等级之前,所述处理所述输出信号的装置从发光状态中减去环境光状态。 Wherein the level before the probe light, the signal processing means by subtracting the output state of the ambient light from the light emitting state.

优选为所述光源为LED,而所述触摸显示器包括控制所述光源的部分工作的装置,其中该部分独立于所述光源其他部分。 The light source is preferably an LED, a display apparatus includes a control part of the work of the light source and the touch, wherein the portion of said light source independent of other portions.

优选为控制所述光源的部分工作的装置包括独立控制所述光源的有效强度的装置。 Operating means preferably controls the light source section comprises means independently controlling the effective intensity of the light source.

优选为控制所述光源的部分的装置包括对所述部分反相布线,并使用桥式驱动器来驱动。 Device section preferably controls the light source comprises wiring said inverter section, and use the bridge driver to drive.

优选为控制所述光源的部分的装置包括使用对角桥式驱动器。 Device section preferably controls the light source comprises using a diagonal bridge drive.

优选为控制所述光源的部分的装置包括为被控制的每个部分使用移位寄存器。 Device section preferably controls the light source comprises using a shift register for each section to be controlled.

优选为所述获得和处理图像的装置包括控制所述光源部分和所述每个相机,而所述处理所述输出信号的装置包括处理信息,确定所述部分是发光的还是不发光的。 Preferably said means for obtaining and processing images includes controlling each of said light source and said camera portion, and said output of said signal processing means comprises a processing information, the determining portion is a luminescent or non-luminescent.

优选为获得图像时,某些部分是发光的,而其他是不发光的。 Preferably the image is obtained, some parts of light emission, while the other is not emitting light.

优选为所述屏幕是反射式的,所述相机进一步对所述屏幕成像, 而所述处理输出信号的装置从镜像中探测光的等级。 Preferably said screen is reflective, said camera further the imaging screen, and the level of light output of the processing means of the detection signal from the mirror.

优选为所述己处理的输出信号指明假定的物体相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 Preferably the output signal is assumed to have the processing specified object relative to the distance between the camera and the relative position of the object and the screen.

依照本发明第五个方面,可以广义地认为本发明在于一种接收关 According to a fifth aspect of the present invention, it is possible that the present invention broadly resides in a receiving Off

于图像的用户输入信号的方法: The method of the input signal to a user image:

在所述图像外围或附近提供至少一个光源,所述光源指引光线通过所述图像; Providing at least one light source at or near the periphery of said image, said light source through said image guide;

在所述图像外围或附近的至少两个位置探测光的等级,并提供所述等级作为输出信号; At least two position detecting level of said light at or near the periphery of an image and providing as an output signal of said level;

,利用三角测量技术处理所述输出信号,确定所述输出信号是否指明接近所述图像的物体的存在,而且如果是肯定的话,指明所述物体的位置。 , Using triangulation techniques to process the output signals, determining whether the output signal indicates the presence of an object approaching the image, and if it is affirmative, that indicates the position of the object.

优选为所述位置基本上为非相对的,使得当存在物体时,所述输出信号基本上指明所述物体的反射光。 The position is preferably substantially non-opposite so that when an object is present, the output signal of the reflected light substantially indicating the object.

依照本发明第六个方面,可以广义地认为本发明在于一种关于图像的、用于定位物体的用户输入器件,包括: According to a sixth aspect of the present invention, can be broadly considered on the present invention resides in an image, a user input device for locating an object, comprising:

至少一个光源,位于所述图像外围或其附近,所述光源指弓i光线通过所述图像; At least one light source positioned at or near the periphery of an image, said light source means by the image i bow;

在一个具有输出的探测器处,所述探测器位于所述图像处或其附近,对所述屏幕之前的空间成像,所述输出信号指明光的等级; At the detector having an output, said detector located at or near the image of the imaging space before the screen, the specified output signal level of the light;

接收所述输出信号并使用三角测量技术的处理器,而所述输出信号确定所述物体的存在,而且如果存在,指明所述物体的位置。 The processor receives the output signal and using triangulation techniques and said output signal to determine the presence of the object, and, if present, indicates the position of the object.

附图简述 BRIEF DESCRIPTION

现在将参考附图描述本发明的一个优选形式; 图1为本发明触摸屏的优选实施例的正视图的图形说明, 图la为沿图1中XX线剖开的横截面图的图解, 图lb为本发明触摸屏的优选实施例的前向照明的图解, 图2为本发明触摸屏的优选实施例的镜像效果的图解, 图2a为本发明触摸屏的优选实施例的滤波实施的方框图, 图2b为本发明优选实施例中,通过面相机拍摄的、并传输到处理模块的像素的图形说明, Will now be described with reference to the accompanying drawings a preferred form of the invention; FIG touch panel of the present invention, a preferred embodiment of a graphical illustration of a front view, cross-sectional view illustrating la of the FIG. 1 taken along line XX of FIG, FIG lb illustrates a front touch screen preferred embodiment of the present invention to illumination, FIG. 2 of the touch screen is preferably illustrated mirror effect according to the embodiment of the present invention, FIG. 2a touch screen is preferably a block diagram of the filter embodiments according to the embodiment of the present invention, FIG 2b is in a preferred embodiment of the invention, the surface of the camera and transmitted to a graphical illustration of a pixel processing module,

图3为本发明触摸屏的优选实施例的系统方框图, FIG 3 touchscreen system block diagram of a preferred embodiment of the present invention.

图4为本发明触摸屏的优选实施例中,使用镜像信号确定物体位 FIG 4 is a touch screen preferred embodiment of the present invention, the object position determination using an image signal

置的侧视图, Opposite side,

图4a为本发明触摸屏的优选实施例中,使用镜像信号确定物体位置的顶视图, FIG. 4a preferred embodiment of the touch screen, the position of the object using the image signal to determine a top view of the embodiment of the present invention,

图5为本发明触摸屏的优选实施例中的校准方法的图解, FIG 5 illustrates a touch screen calibration method according to a preferred embodiment of the present invention,

图6为本发明触摸屏的优选实施例中,在频域内,表征处理模块中成像器的输出信号的曲线图, FIG 6 is a touch screen preferred embodiment of the present invention, in the frequency domain, characterized by a graph of the output signal of the imager in the processing module,

图6a为本发明触摸屏的优选实施例中,在频域内,表征滤波器响应成像器的输出信号的曲线图, Figure 6a is preferably a touch screen graph of the output signal of the embodiment, in the frequency domain, the filter response characterized imager embodiment of the invention,

图6b为本发明触摸屏的优选实施例中,在频域内,经过两种类型的滤波之后,表征物体与背景的分离的曲线图, FIG. 6b touchscreen preferred embodiment, in the frequency domain, after two types of filtering, characterized graph object and the background separated from the present invention,

图7为本发明触摸屏的可选实施例的正视图的图解, Figure 7 a front view of the alternative embodiment of the touch screen of the present invention illustrated,

图7a为本发明触摸屏的可选实施例中沿XX线剖开的横截面图的图解, Figure 7a illustrates a touch screen optional cross-sectional view of the embodiment taken along line XX of the embodiment of the present invention.

图7b为本发明触摸屏的可选实施例的后向照明的图解, 图7c为控制本发明可选实施例的感应高度的后向照明的图解, 图7d为本发明可选实施例中,通过线扫描相机拍摄的、并传输到处理模块的像素的图形说明, Figure 7b illustrates the present touch screen optional embodiment of the lighting embodiment of the invention, Figure 7c illustrates an optional control of the lighting of the present invention after sensing the height of the embodiment, FIG. 7d alternative embodiments of the present invention, by line-scan camera and transmitted to a graphical illustration of a pixel processing module,

图8为本发明可选实施例中,表征物体与背景的简单分离的曲线 FIG 8 an alternative embodiment of the present invention, characterized by simple separation of the object and the background curve

图, Figure,

图9示出用于本发明的局部的背向照明中的不同驱动安排, 图9a示出本发明中由两条线路驱动的两段背光, 图9b示出本发明中由四条线路驱动的十二段背光,以及图9c示出本发明中分布式移位寄存器背光的一个例子。 Figure 9 shows a different local drive arrangements for back-illumination of the present invention, Figure 9a shows a two-stage driven by a backlight in the present invention, two lines, the present invention is shown in FIG. 9b is driven by the four lines ten Sec backlight, and Figure 9c shows an example of the present invention, distributed shift register backlight.

发明详述 DETAILED DESCRIPTION

本发明涉及光学成像触摸屏领域内对信号处理的改进。 The present invention relates to improvements in signal processing in the field of optical imaging touch screens. 在优选实施例中,光学触摸屏使用前向照明,并且由屏幕、 一系列光源、以及至少两个面扫描相机组成,其中相机置于相同平面内,并置于屏幕的边缘。 Embodiment, prior to the illumination optical touch screen used in the preferred embodiment, and by the screen, a series of light sources, and at least two area scan cameras, where the camera is placed in the same plane and placed in the edges of the screen. 在另一个实施例中,光学触摸屏使用背向照明;屏幕被置于触摸面板之后的光源阵列所环绕,其中改变这些光源的方向,使其横跨 In another embodiment, the optical touch panel using the back-illumination; array direction of the light source is disposed after the screen is surrounded by a touch panel, wherein the light source is changed, to span

屏幕的表面。 Surface of the screen. 在相同平面内使用至少两个线扫描相机,作为触摸屏面板。 Using at least two line-scan camera in the same plane as the touch screen panel. 这些实施所产生的对信号处理的改进在于当物体紧密接近触摸屏表面时,可以感知到物体,校准比较简单,而通过改变环境光条件, 例如移动光线或阴影,不会影响对物体的感知。 These embodiments improve the signal produced when an object is processed in that the surface in close proximity to the touch screen, it is possible to perceive the object, the calibration is simple, and by changing ambient light conditions, such as light or moving shadows, will not affect the perception of the object.

常规触摸屏系统1的方框图示于图3。 Conventional touch screen system block 1 illustrated in FIG. 3. 信息从相机6流向视频处 The flow of information from a video camera at 6

理单元以及计算机,共同被称为处理模块IO。 And a computer processing unit, collectively referred to as a processing module IO. 处理模块10执行许多类型的计算,包括滤波、数据采样、以及三角测量,并控制照明源4 The processing module 10 performs many types of calculations including filtering, data sampling, and triangulation and controls the illumination source 4

的调制。 Modulation.

前向照明触摸屏 Before lighting the touch screen to

本发明触摸屏的优选实施例示于图1。 The touch panel of the present invention a preferred embodiment is shown in Fig. 触摸屏系统1由监视器2、 触摸屏面板3、至少两个光源4、处理模块(未示出)以及至少两个面扫描相机6组成。 The touch screen system 1 by the monitor 2, the touch screen panel 3, at least two light sources 4, a processing module (not shown) and at least two area scan cameras 6 composition. 向用户显示信息的监视器2位于触摸屏面板3之后。 Information displayed to the user of the monitor 2 is located after the touch screen panel 3. 在触摸屏面板3和监视器2之下是面扫描相机6和光、源4。 Under the touch screen panel 3 and the monitor cameras 2 are scanning surface 6 and the light source 4. 光源4优选为发光二极管(LED),但可以是另一种类型的光源,例如,荧光管。 4 is preferably a light emitting diode light source (the LED), but may be another type of light source, e.g., a fluorescent tube. 因为可以按要求地调制,所以可以理想地使用LED,它们没有内在的转换频率。 Because they can be modulated as required, it may be desirable to use the LED, they are no inherent switching frequency. 相机6和LED 4位于与触摸面板3相同的平面上。 The camera 6 and the LED 4 is located on the same plane of the touch panel 3.

参考图la,面扫描相机6的视场6a以及LED 4的辐射路径4a 位于相同平面内,并与触摸面板3平行。 Referring to FIG La, scan camera field of view plane 6a 6 and the radiation path 4a LED 4 is located in the same plane, and parallel to the touch panel 3. 当物体7,显示为手指,进入辐射路径4a时,它被辐照。 When an object 7, shown as a finger, into the radiation path 4a, it is irradiated. 这被典型地认为是前向面板照明或物体照明。 This is typically referred to as the front panel illumination or object illumination. 在图lb中,再次阐明该原则。 In Figure lb, the re-stated that principle. 一旦手指7进入辐射场4a, 信号就反射回相机6。 Once the finger 7 into the radiation field 4a, 6 signal is reflected back to the camera. 这表明手指7接近或接触到触摸面板3。 This indicates that the finger 7 proximity or contact to the touch panel 3. 为了确定手指7是否实际接触到触摸面板3,必须确定触摸面板3的位置。 In order to determine whether the actual contact with the finger 7 to the touch panel 3, panel 3 must determine the location of the touch. 使用另一个信号,镜像信号执行这一步。 This step is performed using another signal, the image signal.

镜像信号 Image signal

当物体7接近触摸面板3时产生镜像信号。 7 generates the image signal when the object approaches the touch panel 3. 优选为触摸面板3由具有反射特性的玻璃制成。 The touch panel 3 is preferably made of a glass having reflective properties. 如图2所示,手指7以距离8位于触摸面板3以上,而且在触摸面板3中的镜像为7a。 2, the finger 7 is located at a distance 8 above the touch panel 3, and the mirror in the touch panel 3 is 7a. 相机6(仅示为相机透镜)对手指7及其反射像7a成像。 The camera 6 (only shown as the camera lens) to the finger 7 and the reflected image 7a imaging. 手指7的图像在面板3中反射为7a; 这可以通过视场线6b、 6c和虚视场线6d观察到。 7 finger image in the panel 3 is reflected. 7A; this field by line 6b, 6c and virtual field line 6d observed. 这允许相机6对手指7的反射像7a成像。 This allows the reflected camera 6 and 7 as finger imaging 7a. 相机6产生的数据对应于视场线6e、 6b进入 Data generated by the camera 6 corresponds to the field lines 6e, 6b into the

相机6的位置。 6 position of the camera. 该数据随后进入处理模块10用于分析。 The processing module 10 then enters the data for analysis.

处理模块10的一个部分示于图2a。 A part of the processing module 10 shown in Figure 2a. 在处理模块10内是一系列以软件实现的扫描成像器13,以及数字滤波器ll,以及比较器12。 Within the processing module 10 is a series of software scanning imaging device 13, and a digital filter ll, and a comparator 12. 触摸面板上存在固定数量的像素,例如30,000像素。 Fixed number of pixels present on the touch panel, for example 30,000 pixels. 这些可以分解为100列的300个像素。 These can be divided into the 100 300 pixels. 像素数量可以多于或少于使用的数量,该数量仅用于示例。 The number may be more or less than the number of pixels used, for example only the number. 在此情况下,存在30,000个数字滤波器11和比较器12,分到100列的300像素中,这形成一个矩阵,类似于监视器2上的像素形成的矩阵。 In this case, there are 30,000 digital filters 11 and comparator 12, is assigned 100 300 pixels, this forms a matrix similar to the matrix of pixels on the monitor 2 is formed. 图2a示出对一列的表示,通过一个图像扫描器13和数字滤波器11和比较器12组成的三个组14a、14b、14c来实现, Figure 2a shows a representation of the three groups by a digital image scanner 13 and a filter 11 and a comparator consisting of 12 14a, 14b, 14c is achieved,

这允许读取三个像素中的信息。 This allows to read in three pixels. 该矩阵的一个更具说明性的实例示于图2b。 A more illustrative example of this matrix is ​​shown in Figure 2b. 八个像素3a-3h以列的集群与图像扫描器13相连,随后该图像扫描器与滤波器11和比较器12相连(作为处理模块10的一部分)。 Eight pixels 3a-3h and the cluster in a column are connected to the image scanner 13, and then the image scanner filter 11 and comparator 12 are connected (as part of the processing module 10). 图2b中使用的数目仅用于举例说明;像素的准确数量可以大于或小于该数量。 The number used in FIG. 2b for illustrative purposes only; the exact number of pixels may be more or less than this number. 图解中示出的像素可以不形成面板3中的形状,它们的形状将由所使用的相机6的位置和类型来规定。 Illustrates the pixel can be shown in the shape of the panel 3 is not formed, the position and shape thereof type used by the camera 6 is prescribed.

往回参考图2,手指7和镜像手指7a激活至少两个像素;为简便而使用两个像素。 Referring back to FIG. 2, finger 7 and mirrored finger 7a activates at least two pixels; two pixels are used for simplicity. 这通过进入处理模块10的视场线6e和6b示出。 This is illustrated by field lines into the processing module 10 6e and 6b. 这样激活了软件,因而两个信号通过数字滤波器11和比较器12,并导致形成数字信号输出12a-12e。 Such software is activated, and thus the two signals by a digital filter 11 and the comparator 12, and outputs the digital signal resulting in the formation 12a-12e. 比较器12将滤波器11的输出信号与预定阈值比较。 The comparison output signal 12 of the filter 11 with a predetermined threshold value comparator. 如果在像素处探测到所讨论的手指7,输出信号将会较高,否则将会较低。 If the finger is detected discussed at the pixels 7, the output signal will be high, otherwise it will be lower.

镜像信号也提供手指7关于相机6的位置信息。 Image signals also provide information about the camera location 7 6 fingers. 可以确定面板3 上方的手指7的高度8,以及手指7的角度位置。 3 may determine that the finger above the height of the panel 87, and the angular position of the finger 7. 从镜像信号收集到的信息足够确定手指7关于面板3的位置在哪里,而手指7不需要接触到面板3。 Information collected from the image signal 7 to be adequate for the finger position on the panel where the 3, 7 without touching the finger to the panel 3.

图4和4a示出能够从镜像信号处理中获得的位置信息。 Figures 4 and 4a illustrate the position information can be obtained from the image signal processing. 位置信息在极坐标中给定。 Position information given in polar coordinates. 位置信息涉及手指7的高度,且手指7的位置在面板3之上。 Position information relates to the height of the finger 7, and the position of the finger 7 above the panel 3.

再次参考图2,在输出12a-12e之间的距离内可以看见手指7位于面板3之上的高度。 Referring again to FIG. 2, the distance between the outputs 12a-12e can be seen above the height of the finger 7 of the panel 3. 在此实例中,手指7在面板之上高度8处,输 In this example, the finger 7 is above the panel at the height of 8, the output

出12b和12e生成高信号。 12b and 12e to generate a high signal. 其他输出12a、 12d输出低信号。 Other outputs 12a, 12d outputs a low signal. 可以发现高输出12b、 12e之间的距离9两倍于手指在面板3之上的高度8。 It can be found in high output 12b, the distance between the 12e 9 8 twice the height of the finger above the panel 3. 调制 modulation

处理模块10调制和校准LED 4,并设定采样率。 Modulation processing module 10 and the calibration LED 4, and sets the sampling rate. 调制LED4, 在最简单的实施例中,LED4以预定频率接通和切断。 Modulation LED4, in the simplest embodiment, LED4 is turned on and off at a predetermined frequency. 可能有其他类型的调制,例如正弦波调制。 There may be other types of modulation, such as a sinusoidal modulation. 以高频调制LED4导致读取频率(当感知手指7时)明显大于由改变光线和阴影产生的任何其他频率。 LED4 to cause high-frequency modulation frequency reading (when the finger 7 is perceived) is significantly greater than any other frequencies produced by a change in light and shadow. 调制频率大于500Hz但不超过10kHz。 Modulation frequency is greater than 500Hz, but not more than 10kHz.

采样 sampling

相机6持续生成输出信号,由于数据和时间限制,由处理模块10周期性采样。 6 continuously generate an output signal of the camera, since the data and time constraints is periodically sampled by the processing module 10. 在优选实施例中,采样率至少为调制频率的两倍; 这是为了避免假频。 In a preferred embodiment, the sampling rate is at least twice the frequency of the modulation; this is to avoid aliasing. LED和采样频率的调制不需要同步。 LED modulation frequency and the sampling need not be synchronized.

滤波 Filtering

频域内,扫描成像器13的输出信号示于图6。 Frequency domain, the output signal of the scanning imager 13 is shown in FIG. 在图6中,存在两种典型曲线,当没有感知到物体时, 一种示为21,当感知到手指时, 一种示为20。 In FIG. 6, there are two typical curves, when the object does not sense A as shown 21, when the finger sensed A 20 is shown. 在两种曲线中,在大约5至20Hz处,存在阴影22的移动区域,而在大约50至60Hz处,存在AC主频率区域23。 In both curves, at about 5 to 20Hz, the presence of moving shadows region 22, and at approximately 50 to 60Hz, there is an AC mains frequency region 23.

在优选实施例中,当视场中没有物体时,没有信号传输到面相机, 因此在输出信号中也不存在其他峰值。 Embodiment, the field of view when no object, no transmission signal to face the camera in the preferred embodiment, and therefore there is no other peaks in the output signal. 当物体位于视场中时,存在对应于LED调制频率,例如500Hz的信号24。 When the object is located in the field of view, corresponding to the LED modulation frequency is present, for example, the signal 24 500Hz. 通过不同形式的滤波器可以移除更低的不必要的频率22、 23。 May be removed by various forms of lower unnecessary frequency filters 22, 23. 滤波器类型可以包括梳状、 高通、陷波、以及带通滤波器。 May comprise a comb filter type, high pass, notch, and band pass filter.

在图6a中,图像扫描器的输出信号与应用于信号20的一对不同的滤波响应26、 27—同示出。 In Figure 6a, a different pair of filtered output signal is applied to the image scanner 26 in response to signal 20, shown with 27-. 在简单实施中,可以执行500Hz的梳状滤波器26(如果使用500Hz的调制频率)。 In a simple embodiment may be performed 500Hz comb filter 26 (if used modulation frequency of 500Hz). 这样仅移除最低频率。 In this way only remove the lowest frequencies. 更高级的实施涉及使用带通27或陷波滤波器。 More advanced embodiment involves the use of band pass 27 or notch filter. 在此情况下,除了希望获得想得到的频率的区域外,所有的数据被移除。 In this case, in addition to the desired area to obtain a frequency of conceivable, all data is removed. 在图6a中示出应用于调制频率为500Hz的信号20的500Hz窄带滤波器27。 In Figure 6a shows the signal applied to the modulation frequency of 500Hz to 500Hz narrowband filter 2720. 滤波器26、 27的输出信号30、 31迸一步示于图6b。 Filter 26, the output signal 27 of 30, 31 Beng step shown in FIG 6b. 上方的曲线图示出使用梳状滤波器26时的输出信号30,而下方的曲线图示出使用带通滤波 The upper curve illustrates the use of the output signal 30 of comb filter 26, and the lower graph illustrating the band-pass filter

器27时的输出信号31。 27 when the output signal 31. 带通滤波器27移除所有不必要的信号,使其离开受关注的区域。 Band-pass filter 27 removes all unwanted signals, away from the region of interest.

一旦信号被过滤,且受关注的区域内的信号被识别,得到的信号通过比较器,被转换为数字信号,执行三角测量以确定物体的实际位置。 Once the signal is filtered, and the signals in the region of interest is identified, a signal obtained by the comparator is converted into a digital signal, performs triangulation to determine the actual position of the object. 三角测量在现有技术中已知,并公开于US5534917和US4782328, 并在这里作为参考引入。 Triangulation is known in the prior art, and are disclosed in US5534917 and US4782328, and incorporated herein by reference.

校准 calibration

本发明触摸屏的优选实施例使用非常快速而且方便于校准,允许触摸屏应用在任何情况下,并允许其移动到新位置,例如将触摸屏制成手提电脑。 The touch panel of the present invention preferred embodiment uses very quick and easy calibration that allows the touch screen application, in any case, and allow it to move to a new location, for example made of laptop touchscreen. 校准涉及在三个不同位置31a、 31b、 31c的接触面板3, 如图5所示;这样定义了触摸面板3的触摸平面。 Calibration involves at three different locations 31a, 31b, 31c of the touch panel 3, as shown in FIG. 5; this defines the touch plane of the touch panel 3. 这三个接触点31a、 31b、 31c向处理模块(未示出)提供足够的信息,计算关于触摸面板3 的触摸平面的位置和大小。 The three contact points 31a, 31b, 31c provide enough information to the processing module (not shown) calculates the position and size of the plane of the touch on the touch panel 3. 如前所述,每个接触点31a、 31b、 31c使用镜像信号和直接信号,生成要求的数据。 As described above, each of the contact points 31a, 31b, 31c using mirrored and direct signals, data generation request. 这些接触点31a、 31b、 31c可以在面板3周围变化,它们不必是示出的实际位置。 These contact points 31a, 31b, 31c may vary around the panel 3, they need not be the actual position shown.

后向照明触摸屏 After lighting the touch screen to

图7示出本发明触摸屏的可选实施例。 FIG. 7 shows an alternative embodiment of the present invention a touch screen embodiment. 如同优选实施例中一样, 监视器40位于触摸面板41之后,而光源阵列42围绕在面板41的侧面和较低的边缘。 As preferred embodiments as examples, the monitor 40 is behind the touch panel 41, and the light source array 42 around the side panels 41 and the lower edge. 这些光线指向外,朝向用户,并被漫射板43改变方向横跨面板41。 These rays directed outwards, towards the user, and change the direction of the diffusion plate 43 across the panel 41. 光源阵列42由许多发光二极管(LED)组成。 The light source array 42 by a number of light emitting diode (LED) components. 漫射板43用于改变LED42发射光线的方向,并使其漫射并横跨面板41。 A diffusion plate 43 for changing the direction of light emitted LED42, and allowed to diffuse across the panel 41 and. 至少两个线扫描相机44位于面板3的上边两个拐角,并能够对物体成像。 At least two line-scan cameras upper two corners 44 of the panel 3, and is capable of imaging an object. 相机44可选择地位于面板41外围周边的任何位置。 Alternatively, the camera 44 is located at any position around the periphery of the panel 41. 围绕触摸面板41的外围,是玻璃框45或外壳。 Around the periphery of the touch panel 41, a bezel 45 or enclosure. 玻璃框45作为框架防止被照射光透射到外部环境。 As bezel frame 45 from being irradiated with light transmitted to the outside environment. 玻璃框45将光束反射入相机44,使得当没有物体接近触摸面板41时,光信号总能读入相机44。 Bezel 45 reflects the light beam into the camera 44, such that when no object approaches the touch panel 41, the optical signal is always read into the camera 44.

可选择地,光源阵列42可以被冷阴极管取代。 Alternatively, the light source array 42 may be substituted by a cold cathode tube. 当使用冷阴极管时,不必要将漫射板43作为漫射光线的阴极管的外管。 When cold cathode tubes, the unnecessary diffusion plate 43 as an outer tube of the cathode ray tube diffusion. 冷阴极管布置在沿面板41的一个侧面的全长上。 A cold cathode tube disposed on one side along the entire length of the panel 41. 这提供在面板41的表面上基本均匀的光强。 This panel 41 is provided on the surface of the substantially uniform light intensity. 不是优选使用冷阴极管,因为对于对它们进行修改以适应面板41的每个侧面的具体长度,是困难且昂贵的。 Cold cathode tube is not preferred, because for them to be modified to adapt a particular length of each side panel 41, it is difficult and expensive. 使用LED允许在面板41的大小和形状上有更大的灵活性。 An LED allows for greater flexibility in the size and shape of the panel 41.

当光源阵列42由许多LED组成时,使用漫射板43。 When the LED light source array 42 composed of a number, using the diffusion plate 43. 漫射板43 用于漫射LED发射的光线,并改变其方向到面板41的表面上。 A diffusion plate 43 for diffusing light emitted by the LED, and to change its direction to the upper surface of the panel 41. 如图7a所示,LED42发射的光47在面板41的直角处开始其路径。 As shown, LED42 of the light 47 emitted at right angles panel 41 starts its path 7a. 一旦它照射到漫射板43,就改变方向,平行于面板41。 Once it is irradiated to the diffusion plate 43, to change direction, parallel to the panel 41. 光47在面板41 的表面略上方传播,以辐照面板41。 Light 47 propagating slightly above the surface of the panel 41, panel 41 to irradiate. 如前所述,通过处理模块(未示出)校准和调制光47。 As described above, by the processing module (not shown) and the calibration modulated light 47.

参考图7a,增加玻璃框45的宽度46可以增加或减少。 Referring to Figure 7a, increasing the width 45 of the bezel 46 can be increased or decreased. 增加玻璃框45的宽度46可以增加物体可以被感知到的距离。 Increasing the width 45 of the bezel 46 can be increased it can be perceived distance to the object. 类似地,相反的情况就用于减少玻璃框45的宽度10。 Similarly, the situation is the opposite for reducing the width 10 of the bezel 45.

线扫描相机44由CCD元件、透镜以及驱动控制电路组成。 Line-scan camera CCD element control circuit 44, and is driven by a lens. 当相机44拍摄到图像时,就产生相应的输出信号。 When an image captured by the camera 44, generates a corresponding output signal.

参考图7b和7c,当不使用触摸屏时,也就是,当没有用户的交互作用或输入时,光源阵列42发射的所有光线都传输到线扫描相机44。 Referring to FIG 7b and 7C, when the touch screen is not used, i.e., when there is no user interaction or input, all the light emitted from the light source array 42 are transferred to the line-scan camera 44. 当存在用户输入时,也就是,用户通过用他们的手指接触屏幕, 在屏幕上选择某物时; 一部分传输到相机44的光就被中断。 When there is a user input, i.e., the user touching the screen with their finger, something on a screen is selected; a portion of the light transmitted to the camera 44 is interrupted. 通过利用三角测量算法对相机44的输出数据进行计算,可以确定激活位置。 Calculates output data of the camera 44 by using a triangulation algorithm, it may determine the active position.

线扫描相机44可以读取两个光变量,也就是LED 42透射出来的直接光和反射光。 Line-scan cameras 44 can read two light variables, i.e. out of the transmission LED 42 is directly reflected light. 感应和读取直接和镜像光的方法与之前描述的方法类似,但作为线扫描相机更简单, 一次可以只读取面板的一列;当使用面扫描相机时,面板不会分解为矩阵。 The method of sensing and reading direct and mirrored light is similar to the method previously described, but is simpler as line-scan cameras, it may be read only once a panel; when used area scan camera, the panel does not decompose in a matrix. 图7d示出面板41被分解为部分14a—14d(线扫描相机可以拍摄)的情况。 Figure 7d shows the case of panel 41 is divided into portions 14a-14d (line-scan camera can shoot) a. 之前已经描述了处理的其余部分。 It has been previously described in the remainder of the process. 该图解中示出的像素不可以形成面板41中的形状,它们的形状将由使用的相机44的位置和类型来规定。 The diagram shows the pixel shape may not be formed in the panel 41, the position and shape of their type to be used by the camera 44 is prescribed.

在可选实施例中,由于玻璃框包围触摸面板,线扫描相机将会持续读取LED透射出来的调制光。 In an alternative embodiment, since the bezel surrounds the touch panel, a line-scan camera will continue to read out the modulated light transmissive LED. 这将导致不管何时没有物体中断光路径时,输出信号中都会出现调制频率。 This will result whenever no object interrupts the light path, the output signal will appear in the modulation frequency. 当物体中断光路径时,输出信号中的调制频率将不会出现。 When an object interrupts the light path, the modulated frequency of the output signal will not appear. 这表明物体是接近或者接触到触摸面板。 This indicates that the object is in contact with or in proximity to the touch panel. 出现在输出信号中的频率高度是优选实施例中的频率高度的两倍 Appears in the output signal frequency is twice the frequency of the height of the height in the preferred embodiment

(两倍幅值)。 (Twice the amplitude). 这是由于一次出现了两组信号(直接和镜像)。 This is due to the occurrence of two signals (direct and mirror).

在另外的可选实施例中,图8所示,当调制LED的接通和切断时,采样相机的输出信号。 Embodiment, when the modulation of the LED on and off, the output signal samples of the camera shown in FIG. 8 in a further alternative embodiment. 这提供对环境光加背照明的读取50,以及单独对环境光的读取51。 This provides ambient light plus backlight 50 is read, and the reading of ambient light alone 51. 当物体中断LED发出的光时,在输出信号50中存在下陷52。 When an object interrupts the light emitted by the LED, the output signal 50 in the presence of 52 depressed. 当环境光变化非常大时,难以观察到较小的下陷52。 When the ambient light is very large, difficult to observe small sag 52. 由于这个原因,从环境光和背照明读取50中减去环境光读取51。 For this reason, from 50 reads the ambient light and backlight 51 subtracts the ambient light reading. 这导致出现可以观察到下陷52的输出信号54,从而可以使用简单的阈值来识别下陷52。 This can lead to the observed output signal 54 depressed 52 so that a simple threshold may be used to identify the sag 52.

以与之前描述的相同方式执行可选实施例的校准,但是接触点31a、 31b、 31c(参考图5)不能在一条线上,它们必须散布在面板3的表面。 In the same manner as the previously described embodiment performs calibration alternative embodiment, the contact points 31a, 31b, 31c (refer to FIG. 5) is not in a line, they must be spread over the surface of the panel 3.

在图7中,背照明被分解为许多单独的部分,42a至42f。 In FIG. 7, the backlight is broken down into many separate parts, 42a to 42f. 一个部分或部分的子集在任何时候激活。 A part or subset portions activated at any time. 图像传感器44的像素子集对每个部分成像。 The image sensor 44 of the subset of pixels for each image forming section. 对比利用单个背照明控制的系统,背照明发射器在更短时间内以更高电流工作。 Comparison with a single back lighting control system, the backlight emitters operate in a shorter time with a higher current. 因为限制发射器的平均功率,增加了峰值亮度。 Since the average power of the transmitter limits, increasing the peak brightness. 增加的峰值亮度改进了环境光的性能。 Increase in peak brightness improves the performance of the ambient light.

可以有利地安排背照明的转换,使得当辐照一个部分时,可以通过信号处理器测量另一个部分的环境光等级。 When the conversion may advantageously be arranged back lighting, such that when a portion irradiated, another level of ambient light may be measured through the signal processor portion. 通过同时测量环境光和背照明部分,提高了单一的背照明系统的速度。 By simultaneously measuring ambient light and backlight part, single speed increases the backlighting system.

通过控制LED电流或脉冲宽度适应性地调整背照明亮度,激活每个部分,以使在使用最小平均功率的同时,对于查看该部分的像素, 保持信号与噪声加环境光的恒定比值。 By controlling LED current or pulse width adaptively adjusting the backlight brightness, activation of each section, so while using a minimum average power ratio for a constant view of the pixel portion, the hold signal to noise plus ambient light.

从多个方法中的一个中实现以最小数量的控制线来控制多个部分。 From a plurality of methods implemented to a minimum number of control lines for controlling a plurality of portions.

在两部分背照明的第一实施中,两组二极管44a、 44b可以反相布线并被桥式驱动器驱动。 In a first embodiment the two parts of the backlight, two diodes 44a, 44b and the wiring can be driven inverter bridge driver.

在具有多于两个部分的第二实施中,使用对角桥式驱动器。 In the second embodiment having more than two portions, using a diagonal bridge drive. 在图9b中,4线可以选择12个部分中的一个,5线可以驱动20个部分, 而6线可以驱动30个部分。 In Figure 9b, line 4 can be selected in a part 12, line 5 can be driven portion 20, and line 6 may drive section 30.

在第三实施9c中,对于大量的部分,移位寄存器60物理分布在 In the third embodiment. 9c, for a large part, physically distributed in the shift register 60

背照明的周围,并且只要求两条控制线。 Back ambient illumination, and requires only two control lines.

在本领域,XY多路排列是众所周知的。 In this field, XY multi-channel arrangement is well known. 例如8+4线用于控制32个LED的4位显示。 E.g. 8 + 4 lines 32 for controlling the LED display 4. 图9b示出12个LED的4线对角多路排列。 Figure 9b shows a 4 wire 12 LED diagonal multiplexing arrangement. 控制线A、 B、 C、 D由三态输出信号,例如通常可以在诸如Microchip PIC系列等微处理器的管脚中获得的信号来驱动。 Control lines A, B, C, D output by the tri-state signal, such as signal pins commonly available in the Microchip PIC series, such as a microprocessor or the like driven. 每个三态输出信号具有两个电子开关,通常为场效应管。 Each three-state output signal having two electronic switches, generally MOSFET. 可以接通一个开关或两个开关都不能接通。 May be turned on a switch or both switches are not turned on. 为启动LEDLla,只能使用开关A1和B0。 To start LEDLla, only using switches A1 and B0. 为启动L1B, 操作A0和B1。 To start L1B, operations A0 and B1. 为启动L2a,使用开关A1和D0,等等。 To start L2a, using switches A1 and D0, and the like. 该排列可以与任何数量的控制线共同使用,但特别有利于4、 5、 6条控制线的情况,其中可以控制12、 20、 30个LED,同时保持印刷线路板的轨迹比较简单。 This arrangement may be used with any number of common control lines, but is particularly advantageous for cases 4, 5, 6 control lines, which can be controlled 12, 20, the LED 30, the printed wiring board while maintaining a relatively simple track. 在使用更高控制数量的地方,使用退化的形式是比较有利的,其中省略了一些可能存在的LED,减轻实际互联的难度。 Where the use of a higher number of control, used in the form of degradation is more advantageous, which omits some of the LED may be present, reduce the difficulty of actually interconnected.

对角多路系统具有下列特性: Having the following characteristics diagonal multiplexing system:

一有利于存在4条或更多控制线的情况 A beneficial presence four or more control lines

—要求对每条控制线实行三态推挽驱动 - required to implement each of the tri-state push-pull driver control line

—优于在交叉点使用LED控制线的xy排列,该排列表现为控制线和设置在控制线之间的每一组对角上的一对反相LED组成的环路。 - xy alignment over the use of LED control line at the crossing points, the arrangement of the performance of each group of control lines and the loop is provided between the control line of a pair of inverters in the diagonal LED thereof. 可以唯一地选择每个LED,也可以选择特定的组合。 Can be uniquely selected for each LED, you may also select a specific combination.

一使用可能的最小线数 Using a smallest possible number of lines

—在线上需要使用emc滤波的情况下,明显节省了元件对于那些涉及本发明领域的技术人员而言,本发明中还有对结构的许多改变、不大相同的实施例以及应用并不背离在附加的权利要求书中定义的发明范围。 - in the case requires emc filter on line, saving significant element for those skilled in the art the present invention relates to, according to the present invention, there are many structural changes, not the same as the embodiments and applications without departing from the scope of the invention defined in the attached claims. 这里的公开和描述纯粹为说明性的,而且不用于任何对理解的限制。 The herein disclosed and described is purely illustrative, and are not intended to limit any of understanding.

Claims (88)

1. 一种触摸显示器,包括:让用户在其上或通过其触摸并查看图像的屏幕;在所述屏幕的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面;以所述相机的可成像范围内的频率,调制所述光源发出的所述光线的装置;至少两个具有输出的相机,所述每个相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出包括扫描的图像;处理所述输出的装置,以探测光的等级,所述光包括:来自所述光源的直接光,和/或来自所述光源的反射光;排除所述调制频率之外图像数据的装置;接收所述相机已处理的输出的处理器,所述处理器利用三角测量技术以及所述已处理的输出,以确定该已处理的输出是否表示有接近所述屏幕的物体的存在,而且如果是肯定的话,确定所述物体的位置。 A touch display, comprising: allowing users to view and on which or through which a touch screen image; a light source at one or more edges of the screen, the light source across the light guide surface of the screen ; means to said light frequency modulation within a range of the camera imaging the light source; at least two cameras having outputs, each said camera located at the periphery of the screen, the screen before forming space, said output including a scanned image; means for processing said outputs to detect level of light, said light including: direct light from the light source, and / or reflected light from the light source; negative an image data other than said modulation frequency; receiving the processed output of the camera according to a processor using triangulation techniques and said processed outputs to determine whether the processed output indicates that nearly the presence of an object screen, and if yes, determining the position of the object.
2. 根据权利要求l所述的触摸显示器,其中所述己处理的输出表示假定的物体位置相对于所述相机的相对方位。 2. A touch display as claimed in claim l, wherein said output processing hexyl representation of the relative position of the camera with respect to the assumed position of the object.
3. 根据权利要求1所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 The touch display according to claim 1, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
4. 根据权利要求1所述的触摸显示器,其中所述处理器以平面屏幕坐标确定所述物体的位置。 4. The touch display according to claim 1, wherein the processor determines a position of the object in the screen coordinate plane.
5. 根据权利要求1所述的触摸显示器,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘具有的光源,在所述屏幕之前的光反射器,指引所述光源发射的光横跨所述屏幕的表面。 The touch display according to claim 1, wherein said light source after said screen arranged to project light through said screen and said display includes at each edge having a light source, the screen before light reflector to direct the light emitted from the light source across the surface of the screen.
6. 根据权利要求1所述的触摸显示器,其中所述相机为线扫描相机,所述相机输出包括扫描的线上的信息,且所述处理器使用所述信息确定所述物体的位置。 The touch display according to claim 1, wherein said camera is a line-scan cameras, said camera output including information on line scanned and said processor using said information to determine the position of the object.
7. 根据权利要求1所述的触摸显示器,其中所述用于处理所述输出的装置包括所述排除所述频带之外的图像数据的装置,且所述排除所述频率之外的图像数据的装置包括滤波。 The touch display according to claim 1, wherein said means for processing the image data output means comprises the frequency band other than the negative, and the negative image data outside said frequency the apparatus comprises a filter.
8. 根据权利要求7所述的触摸显示器,其中滤波包括应用从以下组中选择的滤波器,该组包括-梳状滤波器; 高通滤波器; 陷波滤波器;以及带通滤波器。 8. The touch display according to claim 7, wherein the filtering includes applying a filter selected from the group, the group consisting of - a comb filter; a high pass filter; notch filter; and a band pass filter.
9. 根据权利要求1至8中任何一个所述的触摸显示器,包括: 控制所述光源的装置;以及获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得;其中在探测该光的等级之前,所述处理所述输出的装置从该发光状态中减去该环境状态。 According to claim 1 to 8 to any one of the touch display, comprising: a light source of said control means; and means for obtaining and processing images, wherein the image is obtained in a non-light emitting state, and ambient light emission state; wherein before the level of the detection light, the output of the processing means subtracts the ambient state from the light emitting state.
10.—种触摸显示器,包括:让用户在其上或通过其触摸并观看图像的屏幕;在所述屏幕之前的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面;至少两个位于所述屏幕外围、具有输出的相机,将所述相机设置为使其不接收所述光源发出的真接光,所述每个相机对所述屏幕之前的所述表面成像,所述输出包括镜像的图像;处理所述输出,以探测反射光的等级以及来自所述镜像图像的光的等级的装置;以及接收所述相机已处理的输出的处理器,所述处理器利用三角测量技术以及所述已处理的输出,以确定该已处理的输出是否表示有接近所述屏幕的物体的存在,而且如果是肯定的话,确定所述物体的位置。 10.- species touch display, comprising: allowing users thereon or through a touch screen and view images; light source at one or more edges of the screen before the light source across the light guide of the screen surface; at least two on the periphery of the screen, with the camera output, the camera is set to true then it does not receive the light emitted from the light source, each of said camera prior to the image forming surface of the screen said output image comprising a mirror; processing said outputs to detect level of reflected light and means the level of light from a mirror image; and a processor receiving the processed output of the camera, the processor using triangulation techniques and said processed outputs to determine whether the processed output indicates that there is an approaching object presence of the screen, and if yes, determining the position of the object.
11. 根据权利要求10所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 11. The touch display according to claim 10, wherein said processed output indicates the assumed position of the object relative to the distance between the camera and the relative position of the object and the screen.
12. 根据权利要求IO所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 IO 12. The touch display claim, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
13. 根据权利要求10所述的触摸显示器,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕o 13. The touch display according to claim 10, wherein when the output of the object coincides with the assumed object, the processed representation of the object has contacted the screen o
14. 根据权利要求10所述的触摸显示器,其中所述处理器以平面屏幕坐标确定所述物体的位置。 The touch display according to claim 10, wherein the processor determines a position of the object in the screen coordinate plane.
15. 根据权利要求IO所述的触摸显示器,其中所述相机为面扫描相机,所述相机输出包括扫描的面上的信息,且所述处理器使用所述信息确定所述物体的位置。 According to claim IO said touch display, wherein the camera is a surface scan camera, said camera output including information on the scanning surface, and the processor uses the information to determine the position of the object.
16. 根据权利要求10所述的触摸显示器,包括: 调制所述光源发出的所述光线的装置,以提供在所述相机的可成像范围内的频带;排除所述频带之外的图像数据的装置。 16. The touch display according to claim 10, comprising: means for modulating the light emitted from the light source to provide a frequency band within the imageable range of the camera; negative image data outside said frequency band device.
17. 根据权利要求16所述的触摸显示器,其中所述用于处理所述输出的装置包括所述排除所述频带之外的图像数据的装置,且所述排除所述频率之外的图像数据的装置包括滤波。 17. The touch display according to claim 16, wherein said means for processing the image data output means comprises the frequency band other than the negative, and the negative image data outside said frequency the apparatus comprises a filter.
18. 根据权利要求17所述的触摸显示器,其中所述滤波包括应用从以下组中选择的滤波器,该组包括:梳状滤波器;陷波滤波器;以及带通滤波器。 18. The touch display according to claim 17, wherein said filtering comprises applying a filter selected from the group, the group consisting of: a comb filter; notch filter; and a band pass filter.
19. 根据权利要求10至18中任何一个所述的触摸显示器包括: 控制所述光源的装置;以及获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得;其中在探测该光的等级之前,所述处理所述输出的装置从该发光状态中减去该环境状态。 19. The claims 10 to 18 in any one of the touch display comprising: a light source of said control means; and means for obtaining and processing images, wherein the image is obtained in a non-light emitting state, and ambient light emission state; wherein before the level of the detection light, the output of the processing means subtracts the ambient state from the light emitting state.
20.—种触摸显示器,包括: 让用户在其上或通过其触摸并观看图像的屏幕;在所述屏幕之后的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面;至少两个位于所述屏幕外围、具有输出的相机,将所述相机设置为使其不接收所述光源发出的直接光,所述每个相机对所述屏幕之前的所述表面成像,所述输出包括镜像的图像;处理所述输出,以探测反射光的等级以及来自所述镜像图像的光的等级的装置;以及接收所述相机已处理的输出的处理器,所述处理器利用三角测量技术以及所述已处理的输出,以确定该已处理的输出是否表示有接近所述屏幕的物体的存在,而且如果是肯定的话,确定所述物体的位置。 20.- species touch display, comprising: allowing users thereon or through a touch screen and view images; light source at one or more edges of the screen after the light source across the light guide of the screen surface; at least two on the periphery of the screen, with the camera output, the camera is set so as not to directly receive the light emitted from the light source, the surface of each of the camera before the image screen, the output image including a mirror; processing said outputs to detect level of reflected light and means the level of light from a mirror image; and a processor receiving the processed outputs of the camera, the processor utilizes triangulation and outputting the processed to determine whether the processed output indicates there is an approaching object presence of the screen, and if yes, determining the position of the object.
21. 根据权利要求20所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 21. The touch display according to claim 20, wherein said processed output indicates the relative position of the distance between the camera and the object and the screen relative to the assumed position of the object.
22. 根据权利要求20所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 22. The touch display according to claim 20, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
23. 根据权利要求20所述的触摸显示器,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕。 23. The touch display according to claim 20, wherein when the same object and the object is assumed, the processed output indicates that the object has contacted the screen.
24. 根据权利要求20所述的触摸显示器,其中所述处理器以平面屏幕坐标确定所述物体的位置。 24. The touch display according to claim 20, wherein the processor determines a position of the object in the screen coordinate plane.
25. 根据权利要求20所述的触摸显示器,其中所述相机为面扫描相机,所述相机输出包括扫描的面上的信息,而所述处理器使用所述信息确定所述物体的位置。 25. The touch display according to claim 20, wherein said camera is a surface scan camera, the camera output information includes a scan plane, and the processor uses the information to determine the position of the object.
26.根据权利要求20所述的触摸显示器,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘的光源,在所述屏幕之前的光反射器,指引所述光源发射的光横跨所述屏幕的表面。 In the light source of each edge, before the screen by projecting a light to the screen, and the display includes, 26. The touch display according to claim 20, wherein the light source after the screen is provided a light reflector to direct the light emitted by the light source across the surface of the screen.
27. 根据权利要求20所述的触摸显示器包括: 调制所述光源发出的所述光线的装置,以提供在所述相机的可成像范围内的频带;排除所述频带之外的图像数据的装置。 27. A touch display as claimed in claim 20, comprising: means for modulating the light emitted from the light source to provide a frequency band within the imageable range of the camera; a device other than the image data of the negative frequency band .
28. 根据权利要求27所述的触摸显示器,其中所述用于处理所述输出的装置包括所述排除所述频带之外的图像数据的装置,且所述排除所述频率之外的图像数据的装置包括滤波。 28. The touch display according to claim 27, wherein said means for processing the image data output means comprises the frequency band other than the negative, and the negative image data outside said frequency the apparatus comprises a filter.
29. 拫据权利要求28所述的触摸显示器,其中所述滤波包括应用从以下组中选择的滤波器,该组包括:梳状滤波器; 高通滤波器; 陷波滤波器;以及带通滤波器。 29. A touch display 28 of the jobs taken according to claim, wherein said filtering includes applying a filter selected from the group, the group consisting of: a comb filter; a high pass filter; notch filter; and a band-pass filter device.
30. 根据权利要求20至29中任何一个所述的触摸显示器,包括: 控制所述光源的装置;以及获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得;其中在探测该光的等级之前,所述处理所述输出的装置从该发光状态中减去该环境状态。 30. The claims 20 to 29 in any one of the touch display, comprising: a light source of said control means; and means for obtaining and processing images, wherein the image is obtained in a non-light emitting state, and ambient light emission state; wherein before the level of the detection light, the output of the processing means subtracts the ambient state from the light emitting state.
31. —种触摸显示器,包括: 让用户在其上或通过其触摸并观看图像的屏幕; 在所述屏幕的一个或多个边缘处的光源,所述光源指引光线横跨所述屏幕的表面;控制所述光源的部分的操作的装置,所控制的部分独立于所述光源的其他部分;至少两个具有输出的相机,每个所述相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出包括扫描的图像; 处理所述输出,以探测光的等级的装置,所述光包括: 来自所述光源的直接光,和/或来自所述光源的反射光; 接收所述相机已处理的输出的处理器,所述处理器利用三角测量技术以及所述已处理的输出,以确定该已处理的输出是否表示有接近所述屏幕的物体的存在,而且如果是肯定的话,确定所述物体的位置。 31. - kind of a touch display, comprising: allowing users thereon or through touching screen image and view; in a screen of the light source or more edges of the light source across the light guide surface of the screen ; means for controlling the operation of the light source part, the control part independent of the rest of the light source; at least two cameras having outputs, each said camera located at the periphery of the screen, the screen before forming space, said output including a scanned image; processing said outputs to detect the light level of the device, the light comprising: the direct light from the light source, and / or reflected light from the light source; receiving the output from the camera processor processed, the processor uses triangulation techniques and said processed outputs to determine whether the processed output indicates the presence of an object near the screen, and if yes then, determining the position of the object.
32. 根据权利要求31所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 32. The touch display according to claim 31, wherein said processed output indicates the assumed position of the object relative to the distance between the camera and the relative position of the object and the screen.
33. 根据权利要求31所述的触摸显示器,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 33. The touch display according to claim 31, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
34. 根据权利要求31所述的触摸显示器,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕。 34. The touch display according to claim 31, wherein when the same object and the object is assumed, the processed output indicates that the object has contacted the screen.
35. 根据权利要求31所述的触摸显示器,其中所述相机为线扫描相机,所述相机输出包括扫描的线上的信息,且所述处理器使用所述信息确定所述物体的位置。 35. The touch display according to claim 31, wherein the camera is a line-scan cameras, said camera output including information on line scanned and said processor using said information to determine the position of the object.
36. 根据权利要求31所述的触摸显示器,其中所述处理器以平面屏幕坐标确定所述物体的位置。 36. The touch display according to claim 31, wherein the processor determines a position of the object in the screen coordinate plane.
37. 根据权利要求31所述的触摸显示器,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘具有的光源,在所述屏幕之前的光反射器,指引所述光源发射的光横跨所述屏幕的表面。 37. The touch display according to claim 31, wherein said light source after said screen arranged to project light through said screen and said display includes at each edge having a light source, the screen before light reflector to direct the light emitted from the light source across the surface of the screen.
38. 根据权利要求31所述的触摸显示器,其中所述光源为发光二极管(LED)。 38. The touch display according to claim 31, wherein the light source is a light emitting diode (LED).
39. 根据权利要求38所述的触摸显示器,其中控制所述光源的部分的工作的装置包括独立控制所述光源的有效强度的装置。 39. The touch display according to claim 38, wherein the light source control means comprises means for operating independently of the controlling portion of the effective light source intensity.
40. 根据权利要求39所述的触摸显示器,其中控制所述光源的部分的装置包括用对所述部分反相布线,并使用桥式驱动器来驱动。 40. The touch display according to claim 39, wherein the means for controlling the light source portion comprises inverting the wiring portion, and a bridge used to drive the drive.
41. 根据权利要求39所述的触摸显示器,其中控制所述光源的部分的装置包括使用对角桥式驱动器。 41. The touch display according to claim 39, wherein part of the control means of the light source comprises using a diagonal bridge drive.
42. 根据权利要求39所述的触摸显示器,其中控制所述光源的部分的装置包括为被控制的每个部分使用移位寄存器。 42. The touch display according to claim 39, wherein the means for controlling the light source section comprises a shift register for each section to be controlled.
43. 根据权利要求38至42中任何一个所述的触摸显示器,其中所述获得和处理图像的装置包括控制所述光源的部分和所述每个相机, 且所述处理所述输出的装置包括处理关于所述部分是发光的还是不发光的信息。 43. The claims 38 to 42 in any one of the touch display, wherein the obtaining means and the image processing includes controlling said light source and said portion of each camera, and the output of said processing means comprises processing with respect to the light emitting portion is a luminescent or not information.
44. 根据权利要求43所述的触摸显示器,其中在获得图像时,某些部分是发光的,而其他是不发光的。 44. The touch display according to claim 43, wherein upon obtaining an image, some parts of light emission, while the other is not emitting light.
45. —种关于图像的接收用户输入的方法,包括以下步骤: 提供让用户在其上或通过其触摸并观看图像的屏幕; 在所述屏幕的一个或多个边缘处提供光源,所述光源指引光线横跨所述屏幕的表面;以所述相机可成像范围内的频率,调制来自所述光源的所述光线;提供至少两个具有输出的相机,所述每个相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出包括扫描的图像; 处理所述输出,以探测光的等级,所述光包括: 来自所述光源的直接光,和域来自所述光源的反射光; 处理所述输出,以排除所述调制频率之外的图像数据; 处理所述相机已处理的输出,利用三角测量技术获得所述物体的位置。 45. - The method of receiving user about the kind of input image, comprising the steps of: providing allow users thereon or through a touch screen and view the image; providing a source of said one or more edges of the screen, the light source guide light across the surface of the screen; frequency, modulating the light from the light source within the imaging range of the camera; providing at least two cameras having outputs, each said camera located at the screen peripheral, before the spatial image screen, said output including a scanned image; processing said outputs to detect level of light, said light including: direct light from the light source, and domains from the light source reflected light; processing the output image data to exclude other than said modulation frequency; processing the processed outputs of said cameras, the position of the object using triangulation techniques.
46. 根据权利要求45所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位。 46. ​​The method of receiving user regarding the input image according to claim 45, wherein said processed output indicates the assumed position of the object with respect to the relative position of the camera.
47. 根据权利要求45所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 47. The method of receiving user regarding the input image according to claim 45, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
48. 根据权利要求45所述的关于图像的接收用户输入的方法,其中所述位置是平面屏幕坐标。 Claim 48. The method of claim 45 on an image receiving user input, wherein said planar position coordinates screen.
49. 根据权利要求45所述的关于图像的接收用户输入的方法,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘具有的光源,在所述屏幕之前的光反射器, 指引所述光源发射的光横跨所述屏幕的表面。 49. The method of receiving user regarding the input image according to claim 45, wherein said light source after said screen arranged to project light through said screen and said display includes at each edge having a light source, a light reflector prior to the screen, the guidance surface of the light source emitted across the screen.
50. 根据权利要求45所述的关于图像的接收用户输入的方法,其中所述相机为线扫描相机,所述相机输出包括扫描的线上的信息,且所述处理器使用所述信息确定所述物体的位置。 50. The method of receiving user regarding the input image according to claim 45, wherein said camera is a line-scan cameras, said camera output including information on line scanned and said processor using said information in determining the said position of the object.
51. 根据权利要求45所述的关于图像的接收用户输入的方法,其中处理所述输出的步骤包括排除所述频带之外的图像数据的步骤,且所述排除所述频率之外的图像数据的步骤包括滤波。 51. The method of receiving user regarding the input image according to claim 45, wherein said step of processing comprises the step of outputting the image data outside said frequency band excluded, and the exclusion image data outside said frequency comprising the step of filtering.
52. 根据权利要求51所述的关于图像的接收用户输入的方法,其中所述滤波包括应用从以下组中选择的滤波器的步骤,该组包括:梳状滤波器; 陷波滤波器;以及带通滤波器。 52. A method for receiving a user on the input image, wherein said filtering comprises the step of applying a filter selected from the group, the group consisting of the claim 51: a comb filter; notch filter; and bandpass filter.
53. 根据权利要求45至52中任何一个所述的关于图像的接收用户输入的方法,包括以下步骤:控制所述光源;以及获得和处理图像,其中该图像在非发光的环境光状态以及发光状态获得;其中在探测该光的等级之前,所述处理所述输出的步骤从该发光状态中减去该环境状态。 53. The 45 to 52 on any received user input images according to a method comprising the steps of claim: controlling the light source; and obtaining and processing an image, wherein the image in the non-light emitting state and emitting ambient light state is obtained; wherein prior to detection of the light level, said step of processing said outputs subtracts the ambient state from the light emitting state.
54. —种关于图像的接收用户输入的方法,包括以下步骤: 提供让用户在其上或通过其触摸并观看图像的屏幕; 在所述屏幕之后的一个或多个边缘处提供光源,所述光源指引光线横跨所述屏幕的表面;控制所述光源的部分的工作,其中所控制的该部分独立于所述光源的其他部分;提供至少两个具有输出的相机,所述每个相机位于所述屏幕的外围,对所述屏幕之前的空间成像,所述输出包括扫描的图像; 处理所述输出,以探测光的等级,所述光包括: 所述光源发出的直接光,和域来自所述光源的反射光; 处理所述相机已处理的输出,利用三角测量技术获得所述物体的位置。 54. - The method of receiving user about the kind of input image, comprising the steps of: providing or let the user thereon and by its touch-screen image viewing; after a light source is provided in the one or more edges of the screen, the guide light source across the surface of the screen; portion of control operation of the light source, wherein the control part independent of the rest of the light source; providing at least two cameras having outputs, each said camera located periphery of the screen, before the spatial image screen, said output including a scanned image; processing said outputs to detect level of light, the light comprising: a light source of the direct light, and domains from the reflected light of the light source; processing the camera output processed using triangulation techniques to obtain the location of the object.
55. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方 55. The method of receiving user regarding the input image according to claim 54, wherein said processed output indicates the assumed position of the object relative to the opposite side of the camera
56. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 56. The method of receiving user regarding the input image according to claim 54, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
57. 根据权利要求54所述的关于图像的接收用户输入的方法,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕。 57. The method of receiving user regarding the input image according to claim 54, wherein when the output of the object coincides with the assumed object, the processed representation of the object has contacted the screen.
58. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述相机为线扫描相机,所述相机输出包括扫描的线上的信息,且所述处理器使用所述信息确定所述物体的位置。 58. The method of receiving user regarding the input image according to claim 54, wherein said camera is a line-scan cameras, said camera output including information on line scanned and said processor using said information in determining the said position of the object.
59. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述位置是平面屏幕坐标。 59. A method of receiving user regarding the input image according to claim 54, wherein said planar position coordinates screen.
60. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘具有的光源,在所述屏幕之前的光反射器, 指引所述光源发射的光横跨所述屏幕的表面。 60. The method regarding the received user input image according to claim 54, wherein said light source after said screen arranged to project light through said screen and said display includes at each edge having a light source, a light reflector prior to the screen, the guidance surface of the light source emitted across the screen.
61. 根据权利要求54所述的关于图像的接收用户输入的方法,其中所述光源为LED,且述触摸显示器包括控制所述光源的部分的工作的装置,其中所控制的该部分独立于所述光源的其他部分。 Claim 61. The method of claim 54 on an image receiving user input, wherein said light source is an LED, and said operating means comprises a touch display control portion of the light source, wherein the portion of the independent control of to the other parts of the light source.
62. 根据权利要求61所述的关于图像的接收用户输入的方法,其中控制所述光源的部分的工作的步骤包括独立控制所述光源的有效强度。 62. The method of receiving user regarding the input image according to claim 61, wherein the step of controlling said light source portion comprises a work independently controlling the effective intensity of the light source.
63. 根据权利要求62所述的关于图像的接收用户输入的方法,其中所述控制所述光源的部分的步骤包括对所述部分反相布线,并使用桥式驱动器来驱动。 63. The method of claim on an image receiving user input, wherein said step of controlling said light source portion 62 comprises the portion of the wiring inverted, and driven using a bridge drive.
64. 根据权利要求62所述的关于图像的接收用户输入的方法,其中控制所述光源的部分的步骤包括使用对角桥式驱动器。 64. The method of receiving user regarding the input image according to claim 62, wherein the step of controlling the light source comprises using a diagonal portion of the bridge driver.
65. 根据权利要求62所述的关于图像的接收用户输入的方法,其中控制所述光源的部分的步骤包括为被控制的每个部分使用移位寄存器。 65. The method of receiving user regarding the input image according to claim 62, wherein the step of controlling the light source comprises using a shift register part for each section to be controlled.
66. 根据权利要求61至65中任何一个所述的关于图像的接收用户输入的方法,其中获得和处理图像的步骤包括控制所述光源的部分和所述每个相机,且所述处理所述输出的步骤包括处理关于所述部分是发光的还是不发光的信息。 66. The method of any of 61 to 65 according to a receiving user input regarding an image as claimed in claim, wherein the step of obtaining and processing images includes controlling the light source and the portion of each camera, and the processing of the comprising the step of processing with respect to the output from the light emitting portion is a luminescent or not information.
67. 根据权利要求66所述的关于图像的接收用户输入的方法,其中获得图像时,某些部分是发光的,而其他是不发光的。 67. The method of claim on an image receiving user input, wherein when obtaining an image, some parts of the light emitting 66, while the other is not emitting light.
68. —种关于图像的接收用户输入的方法,包括以下步骤-提供让用户在其上或通过其触摸并观看图像的屏幕; 在所述屏幕之后的一个或多个边缘处提供光源,所述光源指引光线横跨所述屏幕的表面;提供至少两个位于所述屏幕外围、具有输出的相机,所述相机设置为使得其不接收所述光源发出的直接光,每个所述相机对所述屏幕之前的空间成像,所述输出包括镜像图像;处理所述输出,以探测反射光的等级以及所述镜像图像的光的等级;以及处理所述相机已处理的输出,利用三角测量技术以及所述已处理的输出,确定已处理的输出是否表示有接近所述屏幕的物体的存在, 而且如果是肯定的话,确定所述物体的位置。 68. - The method of receiving user about the kind of input image, comprising the steps of - providing thereon allows the user or by touching its screen and view image; providing a light source on the screen or after a plurality of edges, the guide light source across the surface of the screen; providing at least two on the periphery of the screen, with an output of the camera, the camera is set such that it does not directly receive the light emitted from the light source, each of said pair of the camera before said imaging screen space, comprising a mirror image of the output; the output processing to detect level of reflected light level of the light and the mirror image; and processing the processed outputs of said cameras, using triangulation techniques and the processed outputs to determine whether the processed output indicates there is an approaching object presence of the screen, and if yes, determining the position of the object.
69. 根据权利要求68所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 69. The method of receiving user regarding the input image according to claim 68, wherein said processed output indicates the relative position of the distance between the camera and the object and the screen relative to the assumed position of an object .
70. 根据权利要求68所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 70. The method of receiving user on the input image as claimed in claim 68, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
71. 根据权利要求68所述的关于图像的接收用户输入的方法,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕。 71. The method of receiving user regarding the input image according to claim 68, wherein when the output of the object coincides with the assumed object, the processed representation of the object has contacted the screen.
72. 根据权利要求68所述的关于图像的接收用户输入的方法,其中所述处理器以平面屏幕坐标确定所述物体的位置。 72. The method of receiving user regarding the input image according to claim 68, wherein the processor determines a position of the object in the screen coordinate plane.
73. 根据权利要求68所述的关于图像的接收用户输入的方法,其中所述相机为面扫描相机,所述相机输出包括扫描的面上的信息,且所述处理器使用所述信息确定所述物体的位置。 73. The method of receiving user regarding the input image according to claim 68, wherein said camera is a surface scan camera, said camera output including information on the scanning surface, and the processor uses the information to determine the said position of the object.
74. 根据权利要求68所述的关于图像的接收用户输入的方法,其中所述光源在所述屏幕之后,设置为将光投射通过所述屏幕,且所述显示器包括,在每个边缘具有的光源,在所述屏幕之前的光反射器, 指引所述光源发射的光横跨所述屏幕的表面。 74. The method of receiving user on the input image as claimed in claim 68, wherein said light source after said screen arranged to project light through said screen and said display includes at each edge having a light source, a light reflector prior to the screen, the guidance surface of the light source emitted across the screen.
75. 根据权利要求68所述的关于图像的接收用户输入的方法,包括:调制所述光源发出的所述光线的装置,提供在所述相机的可成像范围内的频带;排除所述频带之外的图像数据的装置。 75. The user image received on the input method of claim 68, including the claims: means for modulating the light emitted from the light source to provide a frequency band within the imageable range of the camera; excluding the frequency band image data outside the apparatus.
76. 根据权利要求75所述的关于图像的接收用户输入的方法,其中所述用于处理所述输出的装置包括所述排除所述频带之外的图像数据的装置,且所述排除所述频率之外的图像数据的装置包括滤波。 76. The method of receiving user regarding the input image according to claim 75, wherein said means for processing said output image data comprises a means other than the frequency band of the negative, and the exclusion of the apparatus other than the image data comprises a frequency filtering.
77. 根据权利要求76所述的关于图像的接收用户输入的方法,其中所述滤波包括应用从以下组中选择的滤波器,该组包括:梳状滤波器; 高通滤波器; 陷波滤波器;以及带通滤波器。 77. The method of receiving user regarding the input image according to claim 76, wherein said filtering comprises applying a filter selected from the group, the group consisting of: a comb filter; a high pass filter; notch filter ; and a band pass filter.
78. 根据权利要求68至77中任何一个所述的关于图像的接收用户输入的方法,包括:控制所述光源的装置;以及获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得; 其中在探测该光的等级之前,所述处理所述输出的装置从该发光状态中减去该环境状态。 78. The method of any of the 68 to 77 receives a user on the input image, as claimed in claim comprising: means for controlling said light source; non-emission state of the ambient light and means of obtaining and processing an image, wherein the image and a light emitting state is obtained; wherein prior to detection of the light level, the output of the processing means subtracts the ambient state from the light emitting state.
79. —种关于图像的接收用户输入的方法,包括以下步骤: 提供让用户在其上或通过其触摸并观看图像的屏幕; 在所述屏幕之前的一个或多个边缘处提供光源,所述光源指引光线横跨所述屏幕的表面;提供至少两个具有输出的相机,将所述相机设置为使得其不接收所述光源发出的直接光,所述每个相机对所述屏幕之前的空间成像, 所述输出包括镜像图像;处理输出,以探测反射光的等级以及所述镜像图像的光的等级的装置;以及处理所述相机已处理的输出,利用三角测量技术获得所述物体的位置。 79. - The method of receiving user about the kind of input image, comprising the steps of: providing or let the user thereon and by its touch-screen image viewing; providing a light source before said one or more edges of the screen, the guide light source across the surface of the screen; providing at least two cameras having outputs, the camera is set such that it does not directly receive the light emitted from the light source, the camera space prior to each of the screen imaging, comprising a mirror image of the output; output processing to level detecting means and the level of reflected light of the mirror images of the light; and processing said processed output of the camera, using triangulation techniques to obtain the location of the object .
80. 根据权利要求79所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的相对方位以及所述物体与所述屏幕之间的距离。 80. The method of receiving user regarding the input image according to claim 79, wherein said processed output indicates the relative position of the distance between the camera and the object and the screen relative to the assumed position of an object .
81. 根据权利要求79所述的关于图像的接收用户输入的方法,其中所述已处理的输出表示假定的物体位置相对于所述相机的透镜中心的相对方位。 81. The method of claim 79 relates to a method of receiving user input image, wherein said processed output indicates the assumed position of the object with respect to the relative orientation of the lens center of the camera.
82.根据权利要求79所述的关于图像的接收用户输入的方法,其中当所述物体与所述假定的物体一致时,所述已处理的输出表示所述物体已经接触到所述屏幕。 Claim 82. The method of claim 79 with respect to an image receiving user input, wherein when the output of the object coincides with the assumed object, the processed representation of the object has contacted the screen.
83. 根据权利要求79所述的关于图像的接收用户输入的方法,其中所述处理器以平面屏幕坐标确定所述物体的位置。 83. The method of receiving user regarding the input image according to claim 79, wherein the processor determines a position of the object in the screen coordinate plane.
84. 根据权利要求79所述的关于图像的接收用户输入的方法,其中所述相机为面扫描相机,所述相机输出包括扫描的面上的信息,且所述处理器使用所述信息确定所述物体的位置。 The method of receiving a user about an image according to claim 84. The input 79, wherein said camera is a surface scan camera, said camera output including information on the scanning surface, and the processor uses the information to determine the said position of the object.
85. 根据权利要求79所述的关于图像的接收用户输入的方法,包括:调制所述光源发出的所述光线的装置,以提供在所述相机的可成像范围内的频带;排除所述频带之外的图像数据的装置。 85. A method of receiving user input image 79 on the claim, comprising: means for modulating the light emitted from the light source to provide a frequency band within the imageable range of the camera; and excluding the frequency band apparatus other than the image data.
86. 根据权利要求85所述的关于图像的接收用户输入的方法,其中所述用于处理所述输出的装置包括所述排除所述频带之外的图像数据的装置,且所述排除所述频率之外的图像数据的装置包括滤波。 86. The method of receiving user regarding the input image according to claim 85, wherein said means for processing said output image data comprises a means other than the frequency band of the negative, and the exclusion of the apparatus other than the image data comprises a frequency filtering.
87. 根据权利要求86所述的关于图像的接收用户输入的方法,其中滤波包括应用从以下组中选择的滤波器,该组包括:梳状滤波器; 高通滤波器; 陷波滤波器;以及带通滤波器。 87. The method regarding the received user input image according to claim 86, wherein the filtering comprises applying a filter selected from the group, the group consisting of: a comb filter; a high pass filter; notch filter; and bandpass filter.
88. 根据权利要求79至87中任何一个所述的关于图像的接收用户输入的方法,包括: 控制所述光源的装置;以及获得和处理图像的装置,其中该图像在非发光的环境光状态以及发光状态获得;其中在探测该光的等级之前,所述处理所述输出的装置从该发光状态中减去该环境状态。 88.79 to about 87 The method of any received user input image according to a claim, comprising: the light source control means; and means for obtaining and processing images, in which the non-light emitting state of the ambient light in the image and a light emitting state is obtained; wherein prior to detection of the light level, the output of the processing means subtracts the ambient state from the light emitting state.
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