CN102419675B - Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device - Google Patents

Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device Download PDF

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CN102419675B
CN102419675B CN 201110300255 CN201110300255A CN102419675B CN 102419675 B CN102419675 B CN 102419675B CN 201110300255 CN201110300255 CN 201110300255 CN 201110300255 A CN201110300255 A CN 201110300255A CN 102419675 B CN102419675 B CN 102419675B
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coordinate
electromagnetic
contact point
point
contact
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CN102419675A (en
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王红岗
伍松林
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汉王科技股份有限公司
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Abstract

本发明涉及电磁感应装置的坐标校正方法及电磁感应装置,该方法包括如下步骤:确定电磁笔在电磁板上触控的第一接触点的坐标;电磁笔经过第一时间t1后在电磁板上从第一接触点移动至第二接触点时,确定所述第二接触点的第一坐标值;电磁笔经过第二时间t2后在电磁板上从第二接触点移动至第三接触点时,确定所述第三接触点的第二坐标值;根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间t1和第二时间t2获取第二接触点的第二坐标的实际坐标值。 The present invention relates to an electromagnetic induction apparatus coordinate correction method and the electromagnetic induction device, the method comprising the steps of: determining the coordinates of the contact point of the first electromagnetic solenoid pen touch panel; electromagnetic pen after the first time t1 in the electromagnetic tablet when the electromagnetic pen after the second time t2 in the electromagnetic tablet from the second contact point to move a third contact point; the first contact point to move from the second contact point, determining a first coordinate value of the second contact point determining a second coordinate value of the third contact point; coordinate values ​​of the first contact point, a second coordinate value of a first coordinate value and the third contact point and second contact point of a first time t1 and a second actual coordinate value acquisition time t2 of the second contact point in the second coordinate. 采用本发明这种坐标校正方法,能弥补电磁笔的实际运动轨迹和测量坐标不重合的问题,使得电磁板测量的坐标值与电磁笔实际的移动坐标值非常接近。 According to the present invention, such coordinate correction method, the problem can make up the actual trajectory and the measured electromagnetic pen coordinates do not overlap, so that the actual coordinate values ​​and the electromagnetic pen moving coordinate value of the electromagnetic measuring plate very close.

Description

电磁感应装置的坐标校正方法及电磁感应装置 Coordinate correction method and an electromagnetic induction device of the electromagnetic induction apparatus

技术领域 FIELD

[0001] 本发明涉及电磁感应装置的坐标检测,特别是涉及^-种电磁感应装置及该装置的坐标校正方法。 [0001] The present invention relates to a coordinate detecting electromagnetic induction device, particularly relates ^ - kind of an electromagnetic induction means and a coordinate correction method for the device.

背景技术 Background technique

[0002] 随着信息技术的不断发展,电磁感应装置已应用在很多领域。 [0002] With the continuous development of information technology, electromagnetic induction device has been applied in many fields. 电磁感应装置同键盘、鼠标和手写板一样,都是一种输入设备。 An electromagnetic induction apparatus with a keyboard, a mouse and a tablet, are an input device. 电磁感应装置由电磁板和电磁笔组成,主要应用于电脑绘画,便于创作者在创作时找到真实绘画的感觉。 Electromagnetic induction device consists of electromagnetic panel and electromagnetic pen, mainly used in computer painting, easy to find the real creator of painting in the creative sense. 目前的电磁感应装置通常都是将电磁笔在电磁板上移动的轨迹坐标、压力大小和电磁笔的倾角等数据传送给计算机,从而实现手写输入、绘画的目的。 Current electromagnetic induction device is usually of the electromagnetic pen movement trajectory coordinates of the electromagnetic plate, the size and the electromagnetic pen pressure angle and other data transmitted to the computer, so that the input handwriting, painting purposes. 但由于现有的电磁板检测电磁笔与电磁板的接触坐标时X轴和Y轴是分时测量的,X轴测量完成后经过X轴坐标数据处理时间tl后再测量Y轴,实际测量到坐标值所对应的坐标轨迹为图2中虚线所示,测到的坐标值和电磁笔的运动轨迹不是重合的。 However, since the conventional electromagnetic contact coordinate detection plate and the electromagnetic electromagnetic pen plate X and Y axes are measured by time-sharing, data processing time tl elapsed after measurement of the X-axis Y-axis coordinates X-axis measurement is completed, the actual measured coordinate value corresponding to the coordinates of the trajectory shown in broken lines in FIG. 2, and the coordinate values ​​measured electromagnetic pen trajectory not coincide. 图1为现有的电磁板测量坐标的程序流程图,图2为电磁笔在电磁板上移动的轨迹与测量轨迹。 Figure 1 is a conventional coordinate measuring electromagnetic tablet program flow chart, FIG. 2 is a electromagnetic pen moves in the electromagnetic measurement track and the track plate. 如图2所示,电磁板的有效输入区域为图中的矩形框,假设电磁板左上角的坐标为(0,O),右下角的为(Xmax, Ymax)。 2, the valid input region of the electromagnetic plate is a rectangular frame in FIG assumed that the coordinates of the upper left corner of the electromagnetic plate (0, O), the lower right corner is (Xmax, Ymax). 当电磁笔从A点向B点画直线时,A到B的实线为电磁笔的实际运动轨迹,而电磁板实际测量到坐标值所对应的坐标轨迹为图中虚线所示,可以看出实际测到的坐标值和电磁笔的运动轨迹不是重合的。 When the electromagnetic pen straight line from point A to B stipple, the solid line A to the actual trajectory B of an electromagnetic pen, and the electromagnetic plate actually measured coordinate value corresponding to the coordinate locus as shown in dashed lines in FIG., It can be seen the actual coordinate values ​​and the measured electromagnetic pen trajectory not coincide.

发明内容 SUMMARY

[0003] 为避免以上现有技术的不足,本发明提供一种电磁感应装置的坐标校正方法。 [0003] To avoid the above disadvantages of the prior art, the present invention provides a coordinate correction method of an electromagnetic induction device. 该方法利用电磁笔在电磁板上不同接触点的测量坐标值和时间系数获得电磁笔在电磁板上移动时的实际坐标,以解决电磁板实际测量的坐标值与电电磁笔的运动轨迹不^-致的问题。 The method utilizes an electromagnetic pen and the coordinate value of the time coefficient different contact points to obtain the actual coordinates of the pen moves in the electromagnetic solenoid in the electromagnetic tablet plate, in order to solve the coordinate values ​​of the motion trajectory on electromagnetic pen is not actually measured magnetic plate ^ - consistent problem.

[0004] 本发明的技术方案如下: [0004] aspect of the present invention is as follows:

[0005] 电磁感应装置的坐标校正方法,该电磁感应装置具有相互感应电磁信号的电磁板和电磁笔,该方法包括如下步骤: [0005] coordinate correction method of an electromagnetic induction device, the electromagnetic induction apparatus having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plate, the method comprising the steps of:

[0006] 确定电磁笔在电磁板上触控的第一接触点的坐标; [0006] determines the coordinates of the contact point of the first electromagnetic solenoid pen touch panel;

[0007] 电磁笔经过第一时间U后在电磁板上从第一接触点移动至第二接触点时,确定所述第二接触点的第一坐标值; When the [0007] electromagnetic pen after a first time point U moves from the first contact to the second contact point in the electromagnetic plate, the first coordinate value to determine the second contact point;

[0008] 电磁笔经过第二时间t2后在电磁板上从第二接触点移动至第三接触点时,确定所述第三接触点的第二坐标值; [0008] The electromagnetic pen to move a second time t2 after the third contact point from the contact point of the second magnetic plate after determining the second coordinate value of the third contact point;

[0009] 根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值。 [0009] The coordinate values ​​of the first contact point, a second coordinate value of a first coordinate value and the third contact point and second contact point of a first time tl and the second time t2 a second coordinate acquiring the second contact point the actual coordinates.

[0010] 进一步,所述第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值确定采用同一坐标系; A second coordinate value [0010] Further, the coordinate values ​​of the first contact point, a first coordinate value of the second contact point and third contact point is determined using the same coordinate system;

[0011] 所述坐标系为直角坐标系,所述第一坐标值和第二坐标值分别为横坐标和纵坐标,或所述第一坐标和第二坐标分别为纵坐标和横坐标;或 [0011] The rectangular coordinate system, the first coordinate value and second coordinate values ​​of the abscissa and ordinate, respectively, or the first and second coordinate system coordinates the abscissa and ordinate, respectively; or

[0012] 所述坐标系为极轴坐标系,所述第一坐标和第二坐标分别为极径和极角,或所述第一坐标和第二坐标分别为极角和极径。 [0012] The coordinate system is a polar coordinate system, the first coordinate and the second coordinate axis and are very polar angle, or the first coordinate and the second coordinate are polar angle and polar radius.

[0013] 进一步,所述的电磁笔第一接触点的坐标为(xl,yl); [0013] Further, according to a first electromagnetic pen contact point coordinates (xl, yl);

[0014] 所述的第二接触点的第^一坐标值为x2 ; [0014] ^ a first coordinate values ​​of the second contact point X2;

[0015] 所述的第三接触点的第二坐标值为y3 ; [0015] The second coordinate value of the third contact point Y3;

[0016] 所述的第二坐标的实际坐标值为y2=y3-(y3-yl)*C,其中,C为时间系数,C=U/ The actual coordinate value y2 [0016] The second coordinate = y3- (y3-yl) * C, where, C is the time index, C = U /

(tl+t2)ο (Tl + t2) ο

[0017] 近^-步,所述的电磁笔第一接触点坐标为(xl,yl); [0017] Near ^ - step, the first contact point of the electromagnetic pen coordinates (xl, yl);

[0018] 所述的第二接触点的第一坐标值为y2 ; [0018] according to a first coordinate value Y2 of the second contact point;

[0019] 所述的第三接触点的第二坐标值为x3 ; [0019] The second coordinate value of the third contact point X3;

[0020] 所述的第二坐标的实际坐标值为x2=x3-(x3-xl)*C,其中,C为时间系数,C=tl/(tl+t2)。 [0020] The actual coordinates of the second coordinate value x2 = x3- (x3-xl) * C, where, C is the time index, C = tl / (tl + t2).

[0021] 所述电磁笔在电磁板上从第一接触点移动至第二接触点以及从第二接触点移动至第三接触点为匀速移动。 The [0021] uniform electromagnetic pen is moved from the second contact point to the third point of contact moves magnetic plate to move from a first contact point and second contact point.

[0022] 一种电磁感应装置,具有相互感应电磁信号的电磁板和电磁笔,该装置包括: [0022] An electromagnetic induction apparatus having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plate, the apparatus comprising:

[0023] 控制单元,用于确定电磁笔在电磁板上触控的第一接触点的坐标,检测电磁笔经过第一时间tl后在电磁板上从第一接触点移动至第二接触点时确定第二接触点的第一坐标值,以及电磁笔经过第二时间t2在电磁板上从第二接触点移动至第三接触点时,确定第三接触点的第二坐标值;和 When [0023] the control unit, for determining the coordinates of the first point of contact of the electromagnetic electromagnetic pen touch panel, detecting electromagnetic pen after a first time tl electromagnetic plate to move from the first contact point of the second contact point determining first coordinate values ​​of the second contact point, and a second elapsed time t2 electromagnetic pen electromagnetic contact point from the second plate to move the third contact point, determining a second coordinate value of the third contact point; and

[0024] 校正单元,用于根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值。 [0024] correction unit for the coordinate values ​​of the first contact point, a second coordinate value of a first coordinate value and the third contact point and second contact point of a first time tl and the second time t2 acquiring second contact second coordinate values ​​of actual coordinates of the points.

[0025] 进一步,上述的电磁感应装置中,所述第一接触点的坐标、第二接触点的第一坐标值和第三接触点的第二坐标值的确定采用同一坐标系; Determining the [0025] Further, in the above-mentioned electromagnetic induction device, the coordinates of the first contact point, a second coordinate value of a first coordinate value and the third contact point of the second contact point using the same coordinate system;

[0026] 所述坐标系为直角坐标系,所述第一坐标值和第二坐标值分别为横坐标和纵坐标,或所述第一坐标和第二坐标分别为纵坐标和横坐标;或 [0026] The rectangular coordinate system, the first coordinate value and second coordinate values ​​of the abscissa and ordinate, respectively, or the first and second coordinate system coordinates the abscissa and ordinate, respectively; or

[0027] 所述坐标系为极轴坐标系,所述第一坐标和第二坐标分别为极径和极角,或所述第一坐标和第二坐标分别为极角和极径。 [0027] The coordinate system is a polar coordinate system, the first coordinate and the second coordinate axis and are very polar angle, or the first coordinate and the second coordinate are polar angle and polar radius.

[0028] 进一步,上述的电磁感应装置中,所述的第一接触点的坐标为(xl, yl); [0028] Further, in the above-mentioned electromagnetic induction apparatus, said first contact point coordinates (xl, yl);

[0029] 所述的第二接触点的第一坐标值为x2 ; [0029] The first coordinate of the second contact point is X2;

[0030] 所述的第三接触点的第二坐标值为Yi ; [0030] The second coordinate value of the third contact point Yi;

[0031] 所述的第二坐标的实际坐标值为y2= y3-(y3_yl)*C,其中,C为时间系数,C=tl/ The actual coordinate value y2 [0031] The second coordinate = y3- (y3_yl) * C, where, C is the time index, C = tl /

(tl+t2)ο (Tl + t2) ο

[0032] 进一步,上述的电磁感应装置中,所述的第一接触点坐标为(xl,yl); [0032] Further, the above-mentioned electromagnetic induction apparatus, said first contact point is a coordinate (xl, yl);

[0033] 所述的第二接触点的第一坐标值为y2 ; [0033] The first coordinate of the second contact point is Y2;

[0034] 所述的第三接触点的第二坐标值为x3 ; [0034] The second coordinate value of the third contact point X3;

[0035] 所述的第二坐标的实际坐标值为x2= X3-(X3-X1)*C,其中,C为时间系数,C=tl/(tl+t2)。 [0035] The actual coordinates of the second coordinate value x2 = X3- (X3-X1) * C, where, C is the time index, C = tl / (tl + t2). [0036] 进一步,上述的电磁感应装置中,所述电磁笔在电磁板上从第一接触点移动至第二接触点以及从第二接触点移动至第三接触点为匀速移动。 [0036] Further, the above-mentioned electromagnetic induction device, the electromagnetic solenoid moves the pen from the first plate to the second contact point and the contact point moves from the second contact point to the third point of contact for the uniform speed.

[0037] 本发明的优点为: [0037] The advantages of the present invention are:

[0038] 采用本发明提供的坐标校正方法,解决了电磁笔在电磁板上触控移动时测量坐标与实际运动轨迹偏离的问题,有助于准确显示电磁笔在电磁板上触控移动的运动轨迹,充分提高用户的体验度。 [0038] The coordinate correction method provided by the invention, solves the problem of measuring electromagnetic pen trajectory deviates from the actual coordinates of the touch in the mobile magnetic plate helps to accurately display the electromagnetic solenoid moves the pen touch panel movement track, to fully enhance the user experience.

附图说明 BRIEF DESCRIPTION

[0039] 图1:现有的电磁板测量坐标的流程图; [0039] FIG 1: a flowchart of a conventional coordinate measuring magnetic plate;

[0040] 图2:现有的电磁笔在电磁板....t移动的轨迹与测量坐标形成的轨迹; [0040] Figure 2: conventional electromagnetic solenoid plate .... pen trajectory T with the measured coordinate trajectory formed;

[0041] 图3:本发明方法实施例提供的的坐标校正方法流程图; [0041] FIG. 3: coordinate correction method of the invention provides a flow chart of a method embodiment;

[0042] 图4:本发明方法实施例一提供的先测X轴坐标时电磁笔的移动轨迹示意图; [0042] Figure 4: a first embodiment of the X-axis measuring method of the present invention provides a schematic view of an electromagnetic stylus coordinates movement trajectory;

[0043] 图5:本发明方法实施例二提供的先测Y轴坐标时电磁笔的移动轨迹示意图; [0043] FIG. 5: the first Y-axis sensing according to the second embodiment of the method of the present invention, a schematic view of an electromagnetic stylus coordinates movement trajectory;

[0044] 图6:本发明装置实施例提供的电磁感应装置的结构示意图。 [0044] FIG. 6: the structure of the present embodiment of apparatus of the invention provide an electromagnetic induction apparatus of the embodiment of FIG.

具体实施方式[0045] 本发明电磁感应装置的坐标校正方法主要是利用电磁笔在电磁板上不同接触点的测量坐标值和时间系数来获得电磁笔在电磁板上移动时的实际坐标。 DETAILED DESCRIPTION [0045] The coordinate correction method of an electromagnetic induction apparatus of the present invention is primarily to obtain the actual coordinates of the pen moves in the electromagnetic solenoid and the board using the coordinate value of the electromagnetic time coefficient electromagnetic pen different contact points of the board. 具体方法是首先确定电磁笔在电磁板上触控的第一接触点的坐标,然后再确定经过一段时间电磁笔在电磁板上触控的第二接触点坐标,其次确定经过又一段时间电磁笔在电磁板上触控的第三接触点坐标,由电磁板检测的第一至第三接触点的坐标及时间来确定校正坐标。 The specific method is to first determine the coordinates of the contact point of the first electromagnetic solenoid pen touch panel, and then determine the elapsed period of electromagnetic electromagnetic pen touch panel coordinate second contact point, and after a determined period of time followed electromagnetic pen electromagnetic touch panel third contact point coordinates, time coordinates and the first to third contact point is detected by the magnetic plate determined correction coordinates.

[0046] 下面结合图3-6说明本发明测量中的坐标校正方法。 [0046] below with reference to FIGS. 3-6 coordinate correction method of measurement described in the present invention. 图3为本发明测量中的坐标校正方法的总体流程图。 3 is a general flowchart of a method of correction of the coordinate measuring invention. 本发明的坐标系可以是直角坐标系或是极轴坐标系,或者别的坐标系。 Coordinate system according to the present invention may be a Cartesian coordinate system or a polar coordinate system, or another coordinate system. 下文实施例中的坐标系采用直角坐标系,假设电磁板左上角的顶点为(0,O),右下角顶点的坐标为(Xmax, Ymax )。 Examples below coordinate system using an orthogonal coordinate system, assume that the vertices of the upper left corner of the electromagnetic plate (0, O), the vertex coordinates of the lower right corner is (Xmax, Ymax).

[0047] 实施例1: [0047] Example 1:

[0048] 以电磁笔在电磁板上移动时先测量X轴坐标,再测量Y轴坐标为例说明坐标校正方法。 [0048] In the first measurement of electromagnetic pen moves in X-axis coordinate electromagnetic plate, then the measurement coordinate Y coordinate as an example correction method.

[0049] 图4为电磁笔移动轨迹示意图,图中C点为电磁笔在电磁板上移动时的--个接触点,其坐标为(xl,yl)。 [0049] FIG. 4 is a schematic view of an electromagnetic pen movement trajectory, the point C in the figure is an electromagnetic solenoid moves the pen board - contact points, which coordinates (xl, yl). 当电磁板测量并校正完C点坐标后,电磁板内控制器进行数据处理和向主机发送坐标(xl, yl),这段时间记为tl,经过时间tl后,电磁笔移动至到D点处,此时电磁板控制电路设定先测量D点的X轴坐标,该X轴坐标值记为χ2。 When the electromagnetic finished plate measured and corrected coordinates of point C, the magnetic plate and the transmission data processing controller coordinates (xl, yl) to the host, referred to as a period of time tl, after time tl, an electromagnetic pen to move to point D at this time the solenoid control circuit board is set to measure the X-axis coordinate of the point D, which is referred to as X-axis coordinate value χ2. 而后电磁板内控制器需要对X轴测量数据进行处理,处理测量值的这段时间记为t2,经过时间t2后再测量Y轴坐标,但经过t2这段时间后电磁笔实际运动到了E点位置,此时E点的Y轴测量坐标值记为y3。 Then the electromagnetic tablet controller needs the X-axis measurement data processing, measurement processing is referred to as a period of time t2, the time t2 elapsed after measurement of the Y-axis coordinate, but after this period of time t2 to the actual motion electromagnetic pen point E position, in the Y-axis coordinate of the measurement point E value denoted y3. 由此坐标值x2和y3表示的坐标点(x2,y3)对应于图3中的F点,也即F点为电磁板实际测量电磁笔的坐标位置。 Whereby the coordinate values ​​x2 and a coordinate point (x2, y3) y3 represented by the corresponding point F in FIG. 3, i.e. the point F is an electromagnetic plate actually measured coordinate positions of the electromagnetic pen. 因此可以看出测量电磁笔的坐标位置显然与电磁笔的实际运动轨迹中所需测量的D点(x2,y2)坐标不符。 Measurement of electromagnetic pen can thus be seen clearly D coordinate positions of the measuring point (x2, y2) coordinates of the actual trajectory does not match the electromagnetic pen required. 为此需要找到D点的校正坐标y2。 To do this need to find the corrected coordinate y2 D points.

[0050] 可以知道,当电磁笔从C点运动到D点时,在Y轴向量上的平均速度vl=(y2-yl)/tl ;当电磁笔从C点运动到E点时,在Y轴向量上的平均速度V2=(y3-yl)/(tl+t2),由于电磁板的测量坐标的周期很短,为几个毫秒量级,因此可以假定电磁笔从C点经过D点或者从C点到E点的这一毫秒级的时间内电磁笔是匀速运动的,则有vl=v2,所以可得到F式: [0050] know, when the electromagnetic pen movement from point C to point D, the average speed vl in the Y-axis vector = (y2-yl) / tl; when the electromagnetic pen movement from point C to point E, the average speed V2 = (y3-yl) / (tl + t2) in the Y-axis vector, since the coordinate measuring period is short electromagnetic tablet, several milliseconds, thus it can be assumed from electromagnetic pen point C through D from point C to point E or point in time of the millisecond electromagnetic pen is uniform motion, there vl = v2, so the formula F can be obtained:

[0051] (y2-yl) /tl=( y3-yI) / (tl+t2),整理后得y2=y3-(y3-yl) *tl/(tl+t2),由于tl, t2为常量,令C=tl/(tl+t2),则y2=y3-(y3-yl)*C,即可通过实际所测得的Y轴坐标y3和前-一点的Y轴坐标yl得到真实的电磁笔所在点的Y轴坐标y2=y3-(y3-yl)*c。 [0051] (y2-yl) / tl = (y3-yI) / (tl + t2), after finishing to obtain y2 = y3- (y3-yl) * tl / (tl + t2), since tl, t2 is a constant , so that C = tl / (tl + t2), then y2 = y3- (y3-yl) * C, to the actual Y-axis coordinate y3 measured and pre - get the true Y coordinate electromagnetic yl point where Y-axis coordinate point pen y2 = y3- (y3-yl) * c.

[0052] 实施例2: [0052] Example 2:

[0053] 下面再对本发明以电磁笔在电磁板上移动时先测量Y轴坐标,再测量X轴坐标为例说明坐标校正方法。 [0053] In the following the present invention and then the first electromagnetic pen coordinate measuring Y axis while moving the electromagnetic plate, then measuring the X coordinate of coordinate correction method as an example.

[0054] 图5为电磁笔移动轨迹示意图,图中Cl点为电磁笔在电磁板上移动时的一个接触点,其坐标为(xl,yl)。 [0054] FIG. 5 is a schematic movement locus electromagnetic pen, drawing a contact point Cl point pen movement when the electromagnetic solenoid plate, which coordinates (xl, yl). 当电磁板测量并校正完Cl点坐标后,电磁板内控制器进行数据处理和向主机发送坐标(xl, yl),这段时间记为tl,经过时间tl后,电磁笔移动至到Dl点处,此时电磁板控制电路设定先测量Dl点的Y轴坐标,该Y轴坐标值记为y2。 End plate when the electromagnetic measurement and calibration point coordinates Cl, panel controller of the electromagnetic data processing and transmission coordinates (xl, yl) to the host, referred to as a period of time tl, after time tl, an electromagnetic pen to move to point Dl at this time the solenoid control circuit board is set to the Y-axis coordinate of the measurement point Dl, which is referred to as a Y-axis coordinate value y2. 而后电磁板内控制器需要对Y轴测量数据进行处理,处理测量值的这段时间记为t.2,经过时间t.2后再测量X轴坐标,但经过t2这段时间后电磁笔实际运动到了El点位置,此时El点的X轴测量坐标值记为x3。 Then the controller of the electromagnetic plate Y-axis measurement data needs to be processed, processing the measured values ​​of time taken, T.2, X-axis coordinate measuring elapsed time after T.2, but after this period of time t2 the actual electromagnetic pen El moves to the position, at this time point El X-axis coordinate value denoted x3. 由此坐标值x2和y3表示的坐标点(x2, y3)对应于图3中的Fl点,也即Π点为电磁板实际测量电磁笔的坐标位置。 Whereby the coordinate values ​​x2 and a coordinate point (x2, y3) y3 represented by the points corresponding to Fl in Fig. 3, i.e. Π plate actual measurement point of an electromagnetic pen coordinate position of the solenoid. 因此可以看出测量电磁笔的坐标位置显然与电磁笔的实际运动轨迹中所需测量的Dl点(x2,y2)坐标不符。 Thus can be seen that the measurement of electromagnetic pen coordinate position of the measurement point is clearly Dl (x2, y2) coordinates of the actual trajectory does not match the electromagnetic pen required. 为此需要找到Dl点的校正坐标x2。 To do this need to find the corrected coordinate x2 Dl points.

[0055] 可以知道,当电磁笔从Cl点运动到Dl点时,在X轴向量上的平均速度vl=(x2-xl)/tl ;当电磁笔从Cl点运动到El点时,在X轴向量上的平均速度v2=(x3-xl)/(tl+t2),由于电磁板的测量坐标的周期很短,为几个毫秒量级,因此可以假定电磁笔从Cl点经过Dl点或者从Cl点到El点的这一毫秒级的时间内电磁笔是匀速运动的,则有vl=v2,所以可得到下式: [0055] know, when the electromagnetic pen from Cl Dl point to the point, the average speed vl in the X-axis vector = (x2-xl) / tl; Cl when the electromagnetic pen from the point to the point El, in the average speed in the X-axis vector v2 = (x3-xl) / (tl + t2), since the coordinate measuring electromagnetic tablet period is short, a few milliseconds, so it can be assumed from electromagnetic pen point through Dl Cl Cl point or from a point to the point El millisecond time electromagnetic pen is uniform motion, there vl = v2, so the following equation is obtained:

[0056] (x2-xl)/tl=( x'3-xl)/(tl+t2)» 整理后得x2=x3-(x3-xl)*tl/(tl+t2),由于tl, t2为常量,令C=tl/(tl+t2),则x2=x3-(x3-xl)*C,即可通过实际所测得的X轴坐标x3和前一点的X轴坐标xl得到真实的电磁笔所在点的X轴坐标x2=x3-(x3-xl)*C。 [0056] After (x2-xl) / tl = (x'3-xl) / (tl + t2) », finishing x2 = x3- (x3-xl) * tl / (tl + t2), since tl, t2 is a constant, so that C = tl / (tl + t2), then x2 = x3- (x3-xl) * C, to obtain a true X-axis coordinate x3 actually measured and the previous point of the X-axis coordinate xl X-axis electromagnetic pen point coordinates where x2 = x3- (x3-xl) * C.

[0057] 无论电磁笔在电磁板上从哪个角度向上或向下移动,直线或者是曲线移动,电磁笔移动的校正坐标均可以通过上述校正方法得到。 [0057] No matter how the pen is moved downward direction from which the angle of the electromagnetic solenoid or plate, a curved or straight line movement, an electromagnetic pen movement correction coordinates can be obtained by the above correction method.

[0058] 如图6所示为本发明电磁板测量中的坐标校正装置结构示意图,该装置包括控制单元I和校正单元2,其中控制单元I检测电磁笔与电磁板接触的第一接触点坐标,检测电磁笔移动时间tl后至第二接触点时确定第二接触点的第一坐标值,以及检测电磁笔经过时间t2后移动至第三接触点时确定所述第三接触点在所述坐标系第二坐标的坐标值。 [0058] As shown in FIG. 6 is a schematic structure of an electromagnetic correction means coordinate measuring plate of the present invention, the apparatus comprises a control unit I and a correction unit 2, wherein the control unit detects a first contact point coordinate I pen touches the electromagnetic solenoid plate determining first coordinate values ​​of the second contact point is detected after the time tl when the electromagnetic pen moves to the second contact point, and detecting electromagnetic pen determines when to move a third contact point after time t2 and the third point of contact of the coordinates of the second coordinate system coordinate values. 校正单元2根据第一接触点、第二接触点和第三接触点的上述坐标值以及时间tl和t2计算第二接触点在所述坐标系第二坐标的坐标值。 The correction unit 2 first contact point, and the coordinate values ​​of the time tl and t2 the second contact point and third contact point coordinate calculation second contact point in the second coordinate value of the coordinate system.

[0059] 应当理解,以上借助优选实施例对本发明的技术方案进行的详细说明是示意性的而非限制性的。 [0059] It should be understood that the foregoing detailed description is illustrative and not limiting examples of preferred embodiments of the aspect of the present invention by means of. 本领域的普通技术人员在阅读本发明说明书的基础上可以对各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。 Those of ordinary skill in the art upon reading the specification may be performed on the basis of the present invention, the technical solutions described in each of the modified embodiments, some technical features or equivalent replacements; such modifications or replacements do not cause the corresponding technical solutions departing from the essence of the present invention, various embodiments spirit and scope of the technical solutions.

Claims (8)

1.电磁感应装置的坐标校正方法,该电磁感应装置具有相互感应电磁信号的电磁板和电磁笔,其特征在于,该方法包括如下步骤: 确定电磁笔在电磁板上触控的第一接触点的坐标; 电磁笔经过第一时间tl后在电磁板上从第一接触点移动至第二接触点时,确定所述第二接触点的第一坐标值; 电磁笔经过第二时间t2后在电磁板上从第二接触点移动至第三接触点时,确定所述第三接触点的第二坐标值; 根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值; 所述的电磁笔第^-接触点的坐标为(xl,yl); 所述的第二接触点的第一坐标值为x2 ; 所述的第三接触点的第二坐标值为y3 ; 所述的第二坐标的实际坐标值为y2=y3- (y3-yI) *C,其中,C为时间系数,C=tI/(tl+t2)。 1. coordinate correction method of an electromagnetic induction device, the electromagnetic induction apparatus having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plates, wherein, the method comprising the steps of: determining a first point of contact in the electromagnetic solenoid pen touch panel coordinates; electromagnetic pointer after a first time tl electromagnetic board to move the first point of contact from the second contact point, determining the first coordinate value of the second contact point; a second electromagnetic pen after the time t2 when the point of contact moves from the second to the third contact point of the electromagnetic tablet, determining a second coordinate value of the third contact point; coordinate values ​​of the first contact point, a first coordinate value of the second and the third contact point the actual coordinate values ​​of the second coordinate value of the contact point and a second coordinate of a first time tl and the second time t2 acquiring second contact point; said first electromagnetic pen ^ - coordinates of the contact points is (xl, yl); said first coordinate value X2 of the second contact point; a second coordinate of said third contact point is Y3; actual coordinates of the second coordinate value y2 = y3- (y3-yI) * C, wherein, C is the time index, C = tI / (tl + t2).
2.电磁感应装置的坐标校正方法,该电磁感应装置具有相互感应电磁信号的电磁板和电磁笔,其特征在于,该方法包括如下步骤: 确定电磁笔在电磁板上触控的第一接触点的坐标; 电磁笔经过第一时间tl后在电磁板上从第^-接触点移动至第二接触点时,确定所述第二接触点的第一坐标值; 电磁笔经过第二时间t2后在电磁板上从第二接触点移动至第三接触点时,确定所述第三接触点的第二坐标值; 根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值; 所述的电磁笔第一接触点坐标为(xl, yl); 所述的第二接触点的第一坐标值为12 ; 所述的第三接触点的第二坐标值为x3 ; 所述的第二坐标的实际坐标值为X2=x3-(x3-xl)*C,其中,C为时间系数,C=tl/(tl+t2)ο 2. The method of correcting coordinates of the electromagnetic induction means, the electromagnetic induction device having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plates, wherein, the method comprising the steps of: determining a first point of contact in the electromagnetic solenoid pen touch panel coordinates; electromagnetic pointer after a first time tl ^ from the first electromagnetic board - the contact point moves to the second contact point, determining a first coordinate value of the second contact point; a second electromagnetic pen elapsed after the time t2 electromagnetic board from the second contact point to move a third contact point, determining a second coordinate value of the third contact point; coordinate values ​​of the first contact point, a first coordinate value and the second contact point a second coordinate value of the contact point and the first three time tl and the second time t2 to obtain the actual coordinate values ​​of the second coordinate of the second contact point; electromagnetic pen according to a first contact point coordinates (xl, yl); the the first contact point of said second coordinate value of 12; the second coordinate value X3 of the third contact point; the actual coordinates of the second coordinate value X2 = x3- (x3-xl) * C, where, C is the time index, C = tl / (tl + t2) ο
3.根据权利要求1或2所述的电磁感应装置的坐标校正方法,其特征在于, 所述第一接触点的坐标值、第二接触点的第^-坐标值和第三接触点的第二坐标值确定米用同一坐标系; 所述坐标系为直角坐标系,所述第一坐标和第二坐标分别为横坐标和纵坐标,或所述第一坐标和第二坐标分别为纵坐标和横坐标;或所述坐标系为极轴坐标系,所述第一坐标和第二坐标分别为极径和极角,或所述第一坐标和第二坐标分别为极角和极径。 The coordinate correction method or the electromagnetic induction apparatus as claimed in claim 1 or 2, wherein said first contact point coordinate value, a second contact point of ^ - a first coordinate value and the third contact point determining second coordinate values ​​of the same coordinate system with the meter; rectangular coordinate system, the first coordinate and the second coordinate is the abscissa and ordinate, respectively, the first coordinate or the second coordinate system and the coordinates of the vertical axis and the abscissa; the coordinate system or polar coordinate system, the first coordinate and the second coordinate axis and are very polar angle, or the first coordinate and the second coordinate are polar angle and polar radius.
4.根据权利要求3所述的电磁感应装置的坐标校正方法,其特征在于, 所述电磁笔在电磁板上从第一接触点移动至第二接触点以及从第二接触点移动至第三接触点为匀速移动。 The coordinate correction method according to an electromagnetic induction apparatus as claimed in claim 3, wherein said electromagnetic solenoid plate pen point is moved from the first contact to the second contact point and the third point of contact moves from the second to the uniform speed point of contact.
5.一种电磁感应装置,具有相互感应电磁信号的电磁板和电磁笔,其特征在于,该装置包括: 控制单元,用于确定电磁笔在电磁板上触控的第一接触点的坐标,检测电磁笔经过第一时间tl后在电磁板上从第一接触点移动至第二接触点时确定第二接触点的第一坐标值,以及电磁笔经过第二时间t2在电磁板上从第二接触点移动至第三接触点时,确定第三接触点的第二坐标值;和校正单元,用于根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值;所述的第一接触点的坐标为(xl,yl); 所述的第二接触点的第^-坐标值为χ2 ; 所述的第三接触点的第二坐标值为y3 ; 所述的第二坐标的实际坐标值为y2=y3- (y3-y I) *C,其中,C为时间系数,C=U/(tl+t2)ο An electromagnetic induction apparatus having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plates, wherein, the apparatus comprising: a control unit for determining the coordinates of the first point of contact of the electromagnetic electromagnetic pen touch plate, detecting a first coordinate value to determine a second electromagnetic pen point contacting the first contact point to the second contact point moves from a first time tl after the electromagnetic plate, and a second elapsed time t2 electromagnetic pen board from electromagnetic when the second contact point is moved to the third contact point, the third contact point determining second coordinate values; and a correction unit for the coordinate values ​​of the first contact point, a first coordinate value of the second contact point and the third contact actual coordinate value and second coordinate value of the point a first time tl and the second time t2 a second coordinate acquiring second contact point; said first contact point coordinates (xl, yl); the first the first two contact points ^ - coordinate value Chi-square; a second coordinate of said third contact point is Y3; actual coordinates of the second coordinate value y2 = y3- (y3-y I) * C wherein, C is the time index, C = U / (tl + t2) ο
6.一种电磁感应装置,具有相互感应电磁信号的电磁板和电磁笔,其特征在于,该装置包括: 控制单元,用于确定电磁笔在电磁板上触控的第一接触点的坐标,检测电磁笔经过第一时间tl后在电磁板上从第一接触点移动至第二接触点时确定第二接触点的第一坐标值,以及电磁笔经过第二时间t2在电磁板上从第二接触点移动至第三接触点时,确定第三接触点的第二坐标值;和校正单元,用于根据第一接触点的坐标值、第二接触点的第一坐标值和第三接触点的第二坐标值以及第一时间tl和第二时间t2获取第二接触点的第二坐标的实际坐标值; 所述的第一接触点坐标为(xl, yl); 所述的第二接触点的第一坐标值为y2 ; 所述的第三接触点的第二坐标值为χ3 ; 所述的第二坐标的实际坐标值为x2=x3- (x3™xl)*C,其中,C为时间系数,C=tl/(tl+t2)。 An electromagnetic induction apparatus having an electromagnetic mutual induction signals and the electromagnetic pen electromagnetic plates, wherein, the apparatus comprising: a control unit for determining the coordinates of the first point of contact of the electromagnetic electromagnetic pen touch plate, detecting a first coordinate value to determine a second electromagnetic pen point contacting the first contact point to the second contact point moves from a first time tl after the electromagnetic plate, and a second elapsed time t2 electromagnetic pen board from electromagnetic when the second contact point is moved to the third contact point, the third contact point determining second coordinate values; and a correction unit for the coordinate values ​​of the first contact point, a first coordinate value of the second contact point and the third contact the second point coordinate values ​​and a first time tl and the second time t2 a second coordinate acquiring second contact point of the actual coordinate values; the first contact point coordinates (xl, yl); said second the first contact point coordinate value Y2; a second contact point coordinates of the third value x3; actual coordinates of the second coordinate value x2 = x3- (x3 ™ xl) * C, wherein, C is a time index, C = tl / (tl + t2).
7.根据权利要求5或6所述的电磁感应装置,其特征在于, 所述第一接触点的坐标、第二接触点的第一坐标值和第三接触点的第二坐标值的确定米用同一坐标系; 所述坐标系为直角坐标系,所述第一坐标值和第二坐标值分别为横坐标和纵坐标,或所述第一坐标和第二坐标分别为纵坐标和横坐标;或所述坐标系为极轴坐标系,所述第一坐标和第二坐标分别为极径和极角,或所述第一坐标和第二坐标分别为极角和极径。 The electromagnetic induction device of claim 5 or claim 6, wherein determining a second coordinate value of m coordinates of the first contact point, a first coordinate value of the second contact point and third contact point with the same coordinate system; rectangular coordinate system, the first coordinate value and second coordinate values ​​of the abscissa and ordinate, respectively, or the first coordinate and the second coordinate of the coordinate system the abscissa and ordinate respectively ; polar coordinate system or the coordinate system, the first coordinate and the second coordinate axis and are very polar angle, or the first coordinate and the second coordinate are polar angle and polar radius.
8.根据权利要求7所述的电磁感应装置,其特征在于, 所述电磁笔在电磁板上从第一接触点移动至第二接触点以及从第二接触点移动至第三接触点为匀速移动。 8. The electromagnetic induction device according to claim 7, wherein said electromagnetic solenoid plate pen point is moved from the first contact to the second contact point and the contact point moves from the second to the third contact point is uniform mobile.
CN 201110300255 2011-09-30 2011-09-30 Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device CN102419675B (en)

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CN105404404A (en) * 2015-06-10 2016-03-16 广东小天才科技有限公司 Method and apparatus for correcting parameters of mobile terminal
CN105489070B (en) * 2015-12-29 2019-02-22 智慧方舟科技有限公司 A kind of electronics semicircle ruler system and its working method and building block
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CN105489071B (en) * 2015-12-29 2019-01-22 智慧方舟科技有限公司 A kind of electronics ruler system and its working method and building block
CN105786289B (en) * 2016-03-31 2018-12-14 联想(北京)有限公司 A method for reducing interference in the input screen and an electronic device

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