技术领域technical field
本发明涉及一种触摸屏技术，尤其是一种利用单点触摸的水平垂直红外发射接收对实现多点定位的衣服，具体地说是一种红外触摸屏的多点定位方法。The invention relates to a touch screen technology, in particular to a garment which utilizes single-point touch horizontal and vertical infrared emitting and receiving pairs to realize multi-point positioning, in particular to a multi-point positioning method for an infrared touch screen.
背景技术Background technique
目前，触摸屏作为一种方便、快捷的计算机多媒体交互设备已经在许多领域得到了广泛的应用，作为触摸屏的一个分支，红外触摸屏因其生产工艺简单、成本较低且便于安装在现有显示器的边框内，得到了很大的发展，被广泛应用。At present, as a convenient and fast computer multimedia interactive device, the touch screen has been widely used in many fields. As a branch of the touch screen, the infrared touch screen is easy to install on the frame of the existing display because of its simple production process, low cost It has been greatly developed and widely used.
经过20多年的发展，单点红外触摸屏技术已经日趋成熟，随着计算机技术的进步，人们已经不满足于单点触摸，而是转向功能更强的多点触摸，通过手势识别完成更复杂的功能。现有的红外多点触摸判定方法通常基于设计辅助电路的方法，如在红外框背面增加斜向排布的红外发射接收对等，都需要改变现有红外框的系统组成，增加硬件复杂度，对PCB板的元器件排布与布线增加要求。此外，目前也有不改变硬件，通过判断触摸事件发生的先后顺序进行识别多个触摸点的方法，但对于多个触摸点之间无相对移动，也没有触摸点的形状大小值可以参照的情况下，容易发生误判。After more than 20 years of development, single-point infrared touch screen technology has become increasingly mature. With the advancement of computer technology, people are no longer satisfied with single-point touch, but turn to multi-touch with stronger functions, and complete more complex functions through gesture recognition. . Existing infrared multi-touch determination methods are usually based on the method of designing auxiliary circuits, such as adding obliquely arranged infrared transmitters and receivers on the back of the infrared frame, etc., all of which need to change the system composition of the existing infrared frame and increase hardware complexity. Add requirements for the layout and routing of components on the PCB board. In addition, there is currently a method of identifying multiple touch points by judging the sequence of touch events without changing the hardware, but there is no relative movement between multiple touch points, and there is no shape and size value of the touch point to refer to , prone to misjudgment.
发明内容Contents of the invention
本发明的目的是针对现有的红外多点触摸判定方法电路复杂或精度不高的问题，发明一种基于单点触摸的水平垂直红外发射接收对的红外触摸屏的多点定位方法。The purpose of the present invention is to invent a multi-point positioning method for an infrared touch screen based on single-point touch horizontal and vertical infrared emission and reception pairs, aiming at the problem that the circuit of the existing infrared multi-touch determination method is complicated or the accuracy is not high.
本发明的技术方案是：Technical scheme of the present invention is:
一种红外触摸屏的多点定位方法，其特征是它包括以下步骤：A kind of multi-point positioning method of infrared touch screen is characterized in that it comprises the following steps:
A微处理器启动红外触摸屏，按照装置编号顺序使能红外发射接收对，构成正向扫描的第一光栅阵列；记录每对红外装置光电转换后的电压AD值，跳转到步骤B；A microprocessor starts the infrared touch screen, enables infrared transmitting and receiving pairs according to the sequence of device numbers, and forms the first grating array for forward scanning; records the voltage AD value after photoelectric conversion of each pair of infrared devices, and jumps to step B;
B微处理器根据记录的AD值数组，与初始化时记录的AD值数组比较，判断可能被遮挡的点数，如果判断为无遮挡，跳转到步骤A进行下一轮扫描；如果判断为单点触摸，跳转到步骤C；如果判断为多点触摸，跳转到步骤D；According to the recorded AD value array, compared with the AD value array recorded during initialization, the B microprocessor judges the number of points that may be blocked. If it is judged to be unblocked, jump to step A for the next round of scanning; if it is judged to be a single point Touch, jump to step C; if judged as multi-touch, jump to step D;
C微处理器根据AD值数组，计算出触摸物的坐标，完成定位并返回步骤A；The C microprocessor calculates the coordinates of the touch object according to the AD value array, completes the positioning and returns to step A;
D微处理器根据AD值数组，计算出所有可能的触摸点的坐标，并计算出由这些点构成的矩形边长DeltaX与DeltaY，跳转到步骤E进行伪点的消除；The D microprocessor calculates the coordinates of all possible touch points according to the AD value array, and calculates the rectangle side lengths DeltaX and DeltaY formed by these points, and jumps to step E to eliminate false points;
E微处理器通过逐个驱动的方式，按装置编号顺序使能红外发射装置，与偏移n的红外接收装置，构成斜向扫描的第二光栅阵列，其中n的大小与需要构成的光栅角度有关，同一方向的第二光栅与第一光栅夹角应保证在-30度~+30度；记录下每个红外接收装置的光电转换后的电压AD值，跳转到步骤F；The E microprocessor enables the infrared emitting device in the order of device numbers by driving one by one, and forms a second grating array for oblique scanning with the infrared receiving device offset by n, where the size of n is related to the angle of the grating to be formed , the angle between the second grating and the first grating in the same direction should be guaranteed to be -30°~+30°; record the voltage AD value after photoelectric conversion of each infrared receiving device, and jump to step F;
F根据第二个光栅阵列的AD值数组，计算出所有可能的触摸点在此坐标系中的坐标，并计算出由这四点构成的矩形边长DeltaX’与DeltaY’跳转到步骤G；F calculates the coordinates of all possible touch points in this coordinate system according to the AD value array of the second grating array, and calculates the side lengths DeltaX' and DeltaY' of the rectangle formed by these four points and jumps to step G;
G根据DeltaX’和DeltaY’与DeltaX和DeltaY的大小关系，判断出两个触摸点的位置，消除伪点，并根据步骤D计算出的坐标值返回两个点的坐标，跳转到步骤A进行下一轮扫描。G According to the size relationship between DeltaX' and DeltaY' and DeltaX and DeltaY, determine the positions of the two touch points, eliminate false points, and return the coordinates of the two points according to the coordinate values calculated in step D, and then jump to step A. next round of scanning.
在步骤E驱动第二光栅阵列时，应当保证上下边、左右边斜向光栅的交角垂直；当因为触摸屏尺寸与红外装置排放间距问题导致交角无法垂直时，假设以上下边斜向光栅作为参考边，虚拟一条与其垂直的直线，通过这条直线与左右边斜向光栅的夹角进行三角计算，重新虚拟一个矩形带入判断。When driving the second grating array in step E, it should be ensured that the intersection angles of the upper, lower, and left and right oblique gratings are vertical; when the intersection angle cannot be perpendicular due to the size of the touch screen and the emission distance of the infrared device, it is assumed that the upper and lower oblique gratings are used as reference sides, Virtualize a straight line perpendicular to it, perform triangular calculation on the angle between this straight line and the oblique grating on the left and right sides, and re-virtualize a rectangle to bring into the judgment.
上下边的红外装置，发射装置安装在上，接收装置安装在下；左右边的红外装置，发射装置安装在左，接收装置安装在右；在步骤G对DeltaX’和DeltaY’与DeltaX和DeltaY的大小进行判断时，在垂直方向红外发射装置自右向左扫描，水平方向红外发射装置自上向下扫描构成的光栅阵列中，当DeltaX’大于DeltaX且DeltaY’小于DeltaY时，判断为矩形左上角的点与右下角的点为真实点；反之，当DeltaX’小于DeltaX且DeltaY’大于DeltaY时，判断为矩形右上角的点与左下角的点为真实点。For the infrared devices on the upper and lower sides, the transmitting device is installed on the top, and the receiving device is installed on the bottom; for the infrared devices on the left and right sides, the transmitting device is installed on the left, and the receiving device is installed on the right; in step G, the size of DeltaX' and DeltaY' and DeltaX and DeltaY When judging, in the grating array formed by scanning from right to left by the infrared emitting device in the vertical direction and scanning from top to bottom by the infrared emitting device in the horizontal direction, when DeltaX' is greater than DeltaX and DeltaY' is smaller than DeltaY, it is judged as the upper left corner of the rectangle. point and the point at the lower right corner are real points; otherwise, when DeltaX' is smaller than DeltaX and DeltaY' is greater than DeltaY, it is judged that the point at the upper right corner of the rectangle and the point at the lower left corner are real points.
当触摸点多于两点时，可对邻近两个触摸点采用步骤F和G的方法分别判断。When there are more than two touch points, the methods of steps F and G can be used to judge the two adjacent touch points respectively.
本发明采用单点触摸的水平垂直红外发射接收对作为定位信号采集装置。The invention adopts the horizontal and vertical infrared emitting and receiving pairs of single-point touch as the positioning signal collecting device.
本发明的有益效果：Beneficial effects of the present invention:
1.本发明实现多点定位的算法较简单，触摸点位置判断准确、方便、可靠。1. The algorithm for realizing multi-point positioning in the present invention is relatively simple, and the position judgment of touch points is accurate, convenient and reliable.
2.本发明应用广泛，对红外发射装置与红外接收装置的安装角度无特殊要求，可以采用传统单点触摸的水平垂直红外发射接收对，不增加硬件成本。2. The invention is widely used, and has no special requirements on the installation angle of the infrared emitting device and the infrared receiving device, and can adopt the traditional single-touch horizontal and vertical infrared emitting and receiving pairs without increasing hardware costs.
3.本发明可以采用传统单点触摸的水平垂直红外发射接收对，只需要采用本发明的多点识别方法即可进行多点触摸定位，不增加硬件成本，且误判率低，具有较好的使用前景。3. The present invention can adopt the horizontal and vertical infrared emitting and receiving pairs of the traditional single-point touch, and only need to adopt the multi-point identification method of the present invention to perform multi-touch positioning without increasing hardware costs, and the misjudgment rate is low, which has a better prospects for use.
4.本发明通过红外装置的正向与斜向两次扫描，解决了多点触摸的准确定位，可靠性高，适用范围广，不增加成本。4. The present invention solves the problem of accurate positioning of multi-point touch through the forward and oblique scanning of the infrared device twice, with high reliability, wide application range, and no increase in cost.
附图说明Description of drawings
图1是本发明在标准坐标系下扫描双点的示意图。Fig. 1 is a schematic diagram of the present invention scanning two points in a standard coordinate system.
图2是本发明在倾斜坐标系下扫描双点的示意图。Fig. 2 is a schematic diagram of scanning two points in an inclined coordinate system according to the present invention.
图3是本发明对两个坐标系下构成矩形进行比较的示意图。Fig. 3 is a schematic diagram of the present invention comparing rectangles formed in two coordinate systems.
图4是本发明的触摸定位方法流程示意图。FIG. 4 is a schematic flow chart of the touch positioning method of the present invention.
具体实施方式detailed description
下面结合附图和实施例对本发明作进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
如图1-4所示。As shown in Figure 1-4.
本发明所涉及的红外触摸屏包括红外触摸屏本体，触摸屏相邻两边的红外发射装置，在触摸屏另两边的红外接收装置。红外触摸屏的多点定位算法涉及：由在水平与垂直方向红外发射装置与红外接收装置一一对应构成的第一光栅阵列；由水平方向与垂直方向非正对的红外发射装置与红外接收装置构成的第二光栅阵列。触摸点在两个光栅阵列内映射出不同的伪点，通过触摸点与伪点构成矩形的形状来定位真实的触摸点。The infrared touch screen involved in the present invention includes an infrared touch screen body, infrared emitting devices on two adjacent sides of the touch screen, and infrared receiving devices on the other two sides of the touch screen. The multi-point positioning algorithm of the infrared touch screen involves: a first grating array composed of one-to-one correspondence between the infrared emitting device and the infrared receiving device in the horizontal and vertical directions; The second grating array. The touch point maps different pseudo points in the two grating arrays, and the real touch point is located by forming a rectangle shape between the touch point and the pseudo point.
本发明的红外触摸屏多点定位方法，通过微处理器控制红外发射装置与红外接收装置的开关，读取光电转换后的电压AD值，然后进行触摸点判断，当判断为多点触摸时，按照倾斜的方向控制红外发射装置与红外接收装置的开关，在新的坐标系下计算各点在X’和Y’方向的距离，根据不同坐标系下点距离的大小关系进行伪点的消除，具体步骤如下：In the infrared touch screen multi-point positioning method of the present invention, the switch of the infrared emitting device and the infrared receiving device is controlled by a microprocessor, the voltage AD value after photoelectric conversion is read, and then the touch point is judged. When it is judged as a multi-point touch, according to The tilt direction controls the switch of the infrared emitting device and the infrared receiving device, calculates the distance of each point in the X' and Y' directions under the new coordinate system, and eliminates the false points according to the relationship between the point distances under different coordinate systems. Proceed as follows:
A微处理器启动红外触摸屏，按照装置编号顺序使能红外发射接收对，构成正向扫描的第一光栅阵列。记录每对红外装置光电转换后的电压AD值，跳转到步骤B；The A microprocessor starts the infrared touch screen, and enables the infrared transmitting and receiving pairs according to the sequence of device numbers, forming the first grating array for forward scanning. Record the voltage AD value after photoelectric conversion of each pair of infrared devices, and jump to step B;
B微处理器根据记录的AD值数组，与初始化时记录的AD值数组比较，判断可能被遮挡的点数，如果判断为无遮挡，跳转到步骤A进行下一轮扫描；如果判断为单点触摸，跳转到步骤C；如果判断为多点触摸，跳转到步骤D；According to the recorded AD value array, compared with the AD value array recorded during initialization, the B microprocessor judges the number of points that may be blocked. If it is judged to be unblocked, jump to step A for the next round of scanning; if it is judged to be a single point Touch, jump to step C; if judged as multi-touch, jump to step D;
C微处理器根据AD值数组，计算出触摸物的坐标，完成定位并返回步骤A；The C microprocessor calculates the coordinates of the touch object according to the AD value array, completes the positioning and returns to step A;
D微处理器根据AD值数组，计算出所有可能的触摸点的坐标，并计算出由这些点构成的矩形边长DeltaX与DeltaY，跳转到步骤E进行伪点的消除；The D microprocessor calculates the coordinates of all possible touch points according to the AD value array, and calculates the rectangle side lengths DeltaX and DeltaY formed by these points, and jumps to step E to eliminate false points;
E微处理器通过逐个驱动的方式，按装置编号顺序使能红外发射装置，与偏移n的红外接收装置，构成斜向扫描的第二光栅阵列，其中n的大小与需要构成的光栅角度有关，同一方向的第二光栅与第一光栅夹角应保证在-30度~+30度；记录下每个红外接收装置的光电转换后的电压AD值，跳转到步骤F；The E microprocessor enables the infrared emitting device in the order of device numbers by driving one by one, and forms a second grating array for oblique scanning with the infrared receiving device offset by n, where the size of n is related to the angle of the grating to be formed , the angle between the second grating and the first grating in the same direction should be guaranteed to be -30°~+30°; record the voltage AD value after photoelectric conversion of each infrared receiving device, and jump to step F;
F根据第二个光栅阵列的AD值数组，计算出所有可能的触摸点在此坐标系中的坐标，并计算出由这四点构成的矩形边长DeltaX’与DeltaY’跳转到步骤G；F calculates the coordinates of all possible touch points in this coordinate system according to the AD value array of the second grating array, and calculates the side lengths DeltaX' and DeltaY' of the rectangle formed by these four points and jumps to step G;
G根据DeltaX’和DeltaY’与DeltaX和DeltaY的大小关系，判断出两个触摸点的位置，消除伪点，并根据步骤D计算出的坐标值返回两个点的坐标，跳转到步骤A进行下一轮扫描。G According to the size relationship between DeltaX' and DeltaY' and DeltaX and DeltaY, determine the positions of the two touch points, eliminate false points, and return the coordinates of the two points according to the coordinate values calculated in step D, and then jump to step A. next round of scanning.
在步骤E驱动第二光栅阵列时，应该保证斜向光栅的交角垂直。当因为触摸屏尺寸与红外装置排放间距问题导致交角无法垂直时，假设以上下边斜向光栅作为参考边，虚拟一条与其垂直的直线，通过这条直线与左右边斜向光栅的夹角进行三角计算，重新虚拟一个矩形带入判断。When driving the second grating array in step E, it should be ensured that the angle of intersection of the oblique gratings is vertical. When the angle of intersection cannot be perpendicular due to the size of the touch screen and the emission distance of the infrared device, assuming the oblique grating on the upper and lower sides is used as a reference side, a virtual straight line is perpendicular to it, and the angle between this straight line and the oblique grating on the left and right sides is used for trigonometric calculation. Re-virtualize a rectangle and bring it into judgment.
假定上下边的红外装置，发射装置安装在上，接收装置安装在下；左右边的红外装置，发射装置安装在左，接收装置安装在右。在步骤G对DeltaX’和DeltaY’与DeltaX和DeltaY的大小进行判断时，在水平方向红外发射装置自右向左扫描，垂直方向红外发射装置自上向下扫描构成的光栅阵列中，当DeltaX’大于DeltaX且DeltaY’小于DeltaY时，判断为矩形左上角的点与右下角的点为真实点；反之，当DeltaX’小于DeltaX且DeltaY’大于DeltaY时，判断为矩形右上角的点与左下角的点为真实点。Assume that for the infrared devices on the upper and lower sides, the transmitting device is installed on the top and the receiving device is installed on the bottom; for the infrared devices on the left and right sides, the transmitting device is installed on the left and the receiving device is installed on the right. When judging the size of DeltaX' and DeltaY' and DeltaX and DeltaY in step G, in the grating array formed by scanning from right to left by the infrared emitting device in the horizontal direction and scanning from top to bottom by the infrared emitting device in the vertical direction, when DeltaX' When it is greater than DeltaX and DeltaY' is less than DeltaY, it is judged that the point at the upper left corner and the point at the lower right corner of the rectangle are real points; point is the real point.
当触摸点多于两点时，可对邻近两个触摸点采用步骤F和G的方法分别判断。When there are more than two touch points, the methods of steps F and G can be used to judge the two adjacent touch points respectively.
详述如下：The details are as follows:
图1是本发明在标准坐标系下扫描双点的示意图。图中，101是安装有红外发射装置与红外接收装置的电路板，102是红外发射装置，103是红外接收装置，104、105是真实的触摸点，如图所示，在由垂直水平红外装置构成的光栅阵列内，当有触摸点在检测区域内操作时，由于触摸点的遮挡，会使对应的红外接收装置光电转换后的电压AD值发生变化，从而判断出遮挡。出于此种检测原理，除了检测出真实触摸点104、105之外，也会检测出伪点106、107。这四个点构成一个矩形。Fig. 1 is a schematic diagram of the present invention scanning two points in a standard coordinate system. In the figure, 101 is a circuit board equipped with an infrared emitting device and an infrared receiving device, 102 is an infrared emitting device, 103 is an infrared receiving device, and 104 and 105 are real touch points. As shown in the figure, the vertical and horizontal infrared devices In the formed grating array, when a touch point is operated in the detection area, due to the occlusion of the touch point, the voltage AD value after photoelectric conversion of the corresponding infrared receiving device will change, thereby judging the occlusion. Based on this detection principle, in addition to detecting real touch points 104 , 105 , false points 106 , 107 will also be detected. These four points form a rectangle.
图2是本发明在倾斜坐标系下扫描双点的示意图。红外发射装置发出的红外光具有一定的角度，即一个红外发射装置发出的光可同时照射到相邻的多个红外接收装置。由安装在垂直方向的红外发射装置201与安装在垂直方向的红外接收装置202构成第二光栅阵列的X’轴203，由安装在水平方向的红外发射装置204与安装在水平方向的红外接收装置205构成第二光栅阵列的Y’轴206。需要注意的是，出于检测准确的目的，可通过调整红外装置斜向扫描的间隔来调整光栅角度，使203与206垂直相交。在203与206构成的坐标系内，对触摸点的检测方式与第一光栅阵列构成的XOY坐标系一致。同理，除了真实触摸点207、208之外，还会检测出伪点209、210。这四个点构成一个矩形。Fig. 2 is a schematic diagram of scanning two points in an inclined coordinate system according to the present invention. The infrared light emitted by the infrared emitting device has a certain angle, that is, the light emitted by one infrared emitting device can irradiate multiple adjacent infrared receiving devices at the same time. The X' axis 203 of the second grating array is formed by the infrared emitting device 201 installed in the vertical direction and the infrared receiving device 202 installed in the vertical direction, and the infrared emitting device 204 installed in the horizontal direction and the infrared receiving device installed in the horizontal direction 205 constitutes the Y' axis 206 of the second grating array. It should be noted that, for the purpose of accurate detection, the angle of the grating can be adjusted by adjusting the interval of the oblique scanning of the infrared device, so that 203 and 206 intersect perpendicularly. In the coordinate system formed by 203 and 206, the detection mode of the touch point is consistent with the XOY coordinate system formed by the first grating array. Similarly, in addition to real touch points 207, 208, false points 209, 210 will also be detected. These four points form a rectangle.
图3是本发明对两个坐标系下真实点与各组伪点构成的矩形进行比较的示意图。在第一光栅阵列内真实点与伪点构成的矩形为301，在第二光栅阵列内真实点与伪点构成的矩形为302。通过比较可以发现，真实触摸点303与其在第一光栅阵列形成的伪点304、305的距离分别为DeltaX、DeltaY，真实触摸点303与其在第二光栅阵列形成的伪点306、307的距离分别为DeltaX’、DeltaY’，可以直观发现DeltaX’小于DeltaX，DeltaY’大于DeltaY。由此即可以判断出触摸点的真实位置。同理，当触摸点与伪点的位置与图中所示位置相反时，在第二光栅阵列内会形成形状完全不同的矩形，也可以通过相同的方法去除伪点。Fig. 3 is a schematic diagram of the present invention comparing the rectangles formed by the real points and each group of pseudo points in two coordinate systems. The rectangle formed by real points and pseudo points in the first grating array is 301 , and the rectangle formed by real points and pseudo points in the second grating array is 302 . Through comparison, it can be found that the distances between the real touch point 303 and the pseudo points 304, 305 formed in the first grating array are DeltaX and DeltaY respectively, and the distances between the real touch point 303 and the pseudo points 306, 307 formed in the second grating array are respectively DeltaX', DeltaY', it can be found intuitively that DeltaX' is smaller than DeltaX, and DeltaY' is larger than DeltaY. Thus, the real position of the touch point can be determined. Similarly, when the positions of the touch point and the pseudo point are opposite to those shown in the figure, a rectangle with a completely different shape will be formed in the second grating array, and the pseudo point can also be removed by the same method.
综合上述内容，图4是本发明的多点定位方法流程示意图，主要包括以下步骤：Based on the above content, Fig. 4 is a schematic flow chart of the multi-point positioning method of the present invention, which mainly includes the following steps:
1启动正向扫描，记录每对红外装置光电转换后的电压AD值；1 Start forward scanning, record the voltage AD value after photoelectric conversion of each pair of infrared devices;
2根据AD数组计算出所有可能触摸点在正向扫描的第一光栅阵列内的坐标，并由此计算出由真实触摸点和伪点构成矩形的两条边长；2 Calculate the coordinates of all possible touch points in the first grating array of forward scanning according to the AD array, and thus calculate the two side lengths of the rectangle formed by the real touch points and the pseudo points;
3启动斜向扫描，记录斜线上每对红外装置光电转换后的电压AD值；3 Start oblique scanning, and record the voltage AD value after photoelectric conversion of each pair of infrared devices on the oblique line;
4根据AD数组计算出所有可能触摸点在斜向扫描的第二光栅阵列内的坐标，并由此计算出由真实触摸点和伪点构成矩形的两条边长；4. Calculate the coordinates of all possible touch points in the obliquely scanned second grating array according to the AD array, and thus calculate the lengths of the two sides of the rectangle formed by the real touch points and the pseudo points;
5根据不同矩形边长的关系去除伪点，定位真实的触摸点，并将其在第一光栅阵列内的坐标作为最终坐标送出。5. Remove false points according to the relationship between the side lengths of different rectangles, locate real touch points, and send their coordinates in the first grating array as final coordinates.
以上所述仅为本发明的一个实施例，事实上如图2所示的第二光栅阵列存在的扫描死角可以通过改变扫描角度的方式进行补偿；实施例中列举的触摸点只有两个，而依据本发明方法可以实现的触摸点可以是两个或者更多。The above is only an embodiment of the present invention, in fact the dead angle of scanning in the second grating array as shown in Figure 2 can be compensated by changing the scanning angle; there are only two touch points listed in the embodiment, and The number of touch points that can be realized according to the method of the present invention can be two or more.
显然，本领域的普通技术人员根据所掌握的技术知识和惯用手段，根据以上所述内容，可以做出不脱离本发明基本技术思想的多种形式，这些形式上的改变和非实质性变更均包括在本专利的保护范围之内。Obviously, those of ordinary skill in the art can make various forms without departing from the basic technical idea of the present invention based on the technical knowledge and conventional means they have mastered, and these formal changes and insubstantial changes are all Included within the scope of protection of this patent.
本发明未涉及部分均与现有技术相同或可采用现有技术加以实现。The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.
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| CN201310672662.9ACN103744559B (en) | 2013-12-12 | 2013-12-12 | The multipoint positioning method of infrared touch panel |
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| CN201310672662.9ACN103744559B (en) | 2013-12-12 | 2013-12-12 | The multipoint positioning method of infrared touch panel |
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| CN201310672662.9AActiveCN103744559B (en) | 2013-12-12 | 2013-12-12 | The multipoint positioning method of infrared touch panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571728B (en)* | 2015-01-13 | 2017-05-31 | 滨州学院 | A kind of infrared touch panel and the method for quick 2 points of identification |
| CN105426022B (en)* | 2015-12-24 | 2018-08-14 | 深圳市东方中原电子科技有限公司 | A kind of infrared touch panel and the multipoint positioning method based on infrared touch panel |
| CN108108115B (en)* | 2018-01-22 | 2020-10-02 | 河北华发教育科技股份有限公司 | Shortcut execution method and system based on touch screen |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103365492A (en)* | 2013-08-01 | 2013-10-23 | 北京东方中原教育科技有限公司 | Multi-point touch identification method for infrared touch screen |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200941306A (en)* | 2008-03-21 | 2009-10-01 | Egalax Empia Technology Inc | Multi-contact-point infrared type touch panel and control method thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103365492A (en)* | 2013-08-01 | 2013-10-23 | 北京东方中原教育科技有限公司 | Multi-point touch identification method for infrared touch screen |
| Publication number | Publication date |
|---|---|
| CN103744559A (en) | 2014-04-23 |
| Publication | Publication Date | Title |
|---|---|---|
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