TWI419018B - Method for determining incline angle of electromagnetic pointer - Google Patents
Method for determining incline angle of electromagnetic pointer Download PDFInfo
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Description
本發明是有關於一種電磁輸入筆方法，特別是有關於一種電磁輸入筆之傾斜角偵測方法。The invention relates to an electromagnetic input pen method, in particular to a method for detecting a tilt angle of an electromagnetic input pen.
目前電磁式輸入筆之傾斜角偵測方式例如美國專利5,751,229與5,748,110是由電磁筆發射訊號後，由天線或感應線圈於接收到電磁式輸入筆的訊號後，經一系列訊號處理包含訊號放大、濾波、整流、相位偵測與類比數位轉換等產生電壓値與電磁式輸入筆所在位置的X或Y座標的對應關係。當電磁式輸入筆的姿態係與天線或感應線圈垂直時，電磁式輸入筆所在位置的天線或感應線圈及其對應座標處電壓訊號値強度為最大，且為唯一出現電壓訊號値的座標。但當電磁式輸入筆姿態並非與天線或感應線圈垂直時，電磁式輸入筆所在位置鄰近的天線或感應線圈及其對應座標處亦會有電壓訊號値出現，但相對於電磁式輸入筆所在位置的電壓訊號値，為強度次高的電壓訊號値。此時電磁式輸入筆的傾斜角係利用電磁式輸入筆所在位置強度最高的電壓訊號値，即電壓訊號値與X或Y座標關係圖主峰値（main peak value），與強度次高的電壓訊號値，即電壓訊號値與X或Y座標關係圖次峰値（sub peak value），進行函數運算後計算出電磁式輸入筆傾斜角的角度。At present, the tilt angle detection method of the electromagnetic input pen, for example, U.S. Patent Nos. 5,751,229 and 5,748,110 are signals transmitted by the electromagnetic pen after receiving the signal from the antenna or the induction coil, and after a series of signal processing, the signal is amplified. Filtering, rectification, phase detection, and analog-to-digital conversion produce a correspondence between the voltage 値 and the X or Y coordinate of the position of the electromagnetic input pen. When the attitude of the electromagnetic input pen is perpendicular to the antenna or the induction coil, the intensity of the voltage signal at the antenna or the induction coil at the position of the electromagnetic input pen and its corresponding coordinate is the largest, and is the coordinate with the only voltage signal 値. However, when the attitude of the electromagnetic input pen is not perpendicular to the antenna or the induction coil, there will be a voltage signal 値 appearing in the antenna or induction coil adjacent to the position of the electromagnetic input pen, but relative to the position of the electromagnetic input pen. The voltage signal 値 is the second highest voltage signal. At this time, the tilt angle of the electromagnetic input pen is the highest voltage signal using the position of the electromagnetic input pen, that is, the main peak value of the voltage signal 値 and the X or Y coordinate relationship, and the second highest voltage signal.値, that is, the voltage signal 値 and the X or Y coordinate relationship peak peak (sub peak value), after the function operation, calculate the angle of the electromagnetic stylus pen tilt angle.
但是上述傳統電磁式輸入筆之傾斜角偵測方式，必須使用強度最高的電壓訊號値或主峰値訊號與強度次高的電壓訊號値或次峰値訊號做函數運算後計算出傾斜角的角度。以X軸的角度為例，當電磁式輸入筆維持在一定高度，而X軸為0度傾斜但Y軸有一傾斜角度時，X軸的主峰値訊號與次峰値訊號會改變而相對應的比例值也會有所變化，且主峰値訊號與次峰値訊號強弱的變化不一定對等，也不一定有比例上的關係，容易因電磁式輸入筆位置造成主峰値訊號的變化而影響傾斜角的準確性，增加電磁式輸入筆角度上判斷的誤差，在運算上徒增繁瑣的判斷。However, the tilt angle detection method of the above-mentioned conventional electromagnetic input pen must calculate the angle of the tilt angle by using the highest voltage signal or the main peak signal and the second highest voltage signal or the second peak signal. Taking the angle of the X-axis as an example, when the electromagnetic input pen is maintained at a certain height and the X-axis is inclined at 0 degrees but the Y-axis has an oblique angle, the main peak signal and the secondary peak signal of the X-axis are changed to correspond to each other. The proportional value will also change, and the change of the main peak signal and the secondary peak signal is not necessarily equal, and there is not necessarily a proportional relationship. It is easy to influence the tilt due to the change of the main peak signal due to the position of the electromagnetic input pen. The accuracy of the angle increases the error in the judgment of the angle of the electromagnetic input pen, and the calculation is cumbersome.
鑑於上述傳統電磁式輸入筆之傾斜角偵測方式的缺點，本發明提出一種電磁輸入筆之傾斜角偵測方法，以解決傳統電磁式輸入筆傾斜角偵測方式判斷誤差與運算繁瑣的問題。
In view of the shortcomings of the above-mentioned traditional electromagnetic input pen tilt angle detection method, the present invention provides a method for detecting the tilt angle of an electromagnetic input pen, so as to solve the problem that the traditional electromagnetic input pen tilt angle detection method determines the error and the operation is cumbersome.
本發明的目的在於提出一種電磁輸入筆之傾斜角偵測方法，利用偵測電磁式輸入筆所在位置兩側訊號強度並取樣兩側訊號峰値的方式進行函數運算，並由計算結果去判斷電磁式輸入筆的傾斜角度。如此可以不受到所在位置訊號主峰値的變化而影響傾斜角的準確性，減少電磁式輸入筆角度上判斷的誤差。The object of the present invention is to provide a method for detecting the tilt angle of an electromagnetic input pen, which uses a method for detecting the signal intensity on both sides of the position of the electromagnetic input pen and sampling the peaks of the signals on both sides, and performs the function calculation by the calculation result. The angle of inclination of the stylus. In this way, the accuracy of the tilt angle can be affected without being affected by the change of the main peak of the position signal, and the error of the judgment of the angle of the electromagnetic input pen can be reduced.
根據上述的目的，本發明提出一種電磁輸入筆之傾斜角偵測方法，此電磁輸入筆之傾斜角偵測方法包含以下步驟。首先提供一電磁輸入筆在X/Y軸天線Xn
/Yn
上方。接著以天線Xn
/Yn
為中心點兩側各掃描a天線數。然後根據掃描訊號及掃描的a天線數分析天線Xn
/Yn
中心點與兩側主要訊號分佈。接著決定兩側所需取樣的天線數目。然後根據取樣的天線數目開啟兩側所需的天線擷取電磁筆的訊號。最後根據兩側天線取樣訊號判斷該電磁輸入筆之一傾斜角。
According to the above object, the present invention provides a method for detecting the tilt angle of an electromagnetic input pen, and the method for detecting the tilt angle of the electromagnetic input pen comprises the following steps. An electromagnetic input pen is first provided above the X/Y axis antenna X n /Y n . Next, the number of antennas is scanned on both sides of the antenna X n /Y n as a center point. Then, according to the scanning signal and the number of scanned a antennas, the antenna X n /Y n center point and the main signal distribution on both sides are analyzed. Then determine the number of antennas to be sampled on both sides. Then, according to the number of antennas sampled, the signals required to capture the electromagnetic pen on both sides are turned on. Finally, the tilt angle of one of the electromagnetic input pens is determined according to the antenna sampling signals of the two sides.
本發明的一些實施例將詳細描述如下。然而，除了如下描述外，本發明還可以廣泛地在其他的實施例施行，且本發明的範圍並不受實施例之限定，其以之後的專利範圍為準。再者，為提供更清楚的描述及更易理解本發明，圖式內各部分並沒有依照其相對尺寸繪圖，某些尺寸與其他相關尺度相比已經被誇張；不相關之細節部分也未完全繪出，以求圖式的簡潔。Some embodiments of the invention are described in detail below. However, the present invention may be widely practiced in other embodiments than the following description, and the scope of the present invention is not limited by the examples, which are subject to the scope of the following patents. Further, in order to provide a clearer description and a better understanding of the present invention, the various parts of the drawings are not drawn according to their relative dimensions, and some dimensions have been exaggerated compared to other related dimensions; the irrelevant details are not fully drawn. Out, in order to make the schema simple.
第一圖顯示本發明一實施例之一電磁感應輸入系統。電磁感應輸入系統包含一電磁感應控制基板102與一電磁輸入筆（stylus）106。電磁感應控制基板102包含含複數沿X與Y方向排列彼此平行部分重疊由導體或感應線圈構成的天線區104與控制元件（未圖示）。控制元件包含處理單元例如微控制器（Micro-controller Unit，MCU）與相關訊號濾波（filter）、訊號放大（amplifier）、天線開關（switch）、相位偵測（phase detector）、類比數位轉換（A/D converter）等訊號處理電路。電磁輸入筆106包含一共振電路（resonance circuit）。電磁輸入筆106的座標係藉由電磁輸入筆106內共振電路與電磁感應控制基板102上之感應線圈之間的電磁波傳送與接收而獲得。The first figure shows an electromagnetic induction input system in accordance with one embodiment of the present invention. The electromagnetic induction input system includes an electromagnetic induction control substrate 102 and an electromagnetic stylus 106. The electromagnetic induction control substrate 102 includes an antenna region 104 and a control element (not shown) including a plurality of parallel conductors or induction coils arranged in parallel in the X and Y directions. The control component includes a processing unit such as a Micro-controller Unit (MCU) and associated signal filtering, an amplifier, an antenna switch, a phase detector, and an analog digital conversion (A). /D converter) and other signal processing circuits. The electromagnetic input pen 106 includes a resonance circuit. The coordinates of the electromagnetic input pen 106 are obtained by electromagnetic wave transmission and reception between the resonant circuit in the electromagnetic input pen 106 and the induction coil on the electromagnetic induction control substrate 102.
第二圖顯示電磁式輸入筆於電磁感應輸入系統的天線區（Xn-8 ~ Xn+8 ）傾斜一角度的示意圖。於第二圖中，當電磁式輸入筆垂直於電磁感應輸入系統的天線區時定義為0o ，向右邊傾倒至平行於天線區時為90o ，向左邊傾倒至平行於天線區時為-90o 。The second figure shows a schematic diagram of the electromagnetic input pen tilted at an angle in the antenna area (X n-8 ~ X n+8 ) of the electromagnetic induction input system. In the second figure, when the electromagnetic input pen is perpendicular to the antenna area of the electromagnetic induction input system, it is defined as 0 o , and when it is tilted to the right to be parallel to the antenna area, it is 90 o , and when it is tilted to the left to be parallel to the antenna area, it is - 90 o .
第三圖顯示為經由電磁式輸入系統的天線區所擷取到的X軸電壓訊號與座標示意圖。其中橫軸為X軸的天線數，縱軸為電壓訊號的強度，及訊號主峰値與兩側訊號次鋒値的訊號分布圖。Y軸訊號也是如此。以下說明都是以X軸訊號為主。並延伸至Y軸訊號。The third figure shows the X-axis voltage signal and coordinates captured by the antenna area of the electromagnetic input system. The horizontal axis is the number of antennas on the X axis, and the vertical axis is the intensity of the voltage signal, and the signal distribution of the main peak of the signal and the secondary signal of both sides. The same is true for the Y-axis signal. The following instructions are based on the X-axis signal. And extended to the Y-axis signal.
當電磁式輸入筆在X軸天線Xn 上方，以Xn 為中心點兩側各掃描複數個天線數，由各個天線所掃描出來的訊號強弱及掃描的天線數去分析出複數個主要的訊號分布。因為電磁感應的訊號分布有對稱性，兩側峰値在做訊號取樣時，可以應用相對應的天線做取樣，而使用相對應的天線數取樣時，當筆有傾斜時或是提高時，其兩側峰値比例變化是一致的，並不受到主峰値訊號強弱而造成傾斜角度的誤差。而兩側次峰値訊號的取樣，可以是單數或是複數個天線訊號強度的總和。當決定好兩側次峰値訊號的取樣的方式為單數或是複數個天線後。在進行傾斜角偵測時，訊號取樣只要開啟決定好的天線取樣即可，並不需要取樣主峰的訊號值。當取樣完成後，再應用其訊號強度來進行函數運算來判斷電磁式輸入筆的傾斜角度。When the electromagnetic input pen is above the X-axis antenna X n , the number of antennas is scanned on both sides of X n as the center point, and the signal intensity scanned by each antenna and the number of scanned antennas are analyzed to analyze a plurality of main signals. distributed. Because the signal distribution of the electromagnetic induction is symmetrical, the peaks on both sides can be sampled when the signal is sampled, and when the corresponding antenna number is used for sampling, when the pen is tilted or raised, The change of the peak-to-peak ratio on both sides is consistent, and the error of the tilt angle is not caused by the strength of the main peak signal. The sampling of the secondary peak signals on both sides may be the sum of the singular or multiple antenna signal strengths. When it is determined that the sampling of the secondary peak signals is singular or plural antennas. When performing tilt angle detection, signal sampling can be performed by simply turning on the determined antenna sampling, and it is not necessary to sample the signal value of the main peak. When the sampling is completed, the signal strength is applied to perform a function operation to determine the tilt angle of the electromagnetic input pen.
本發明第一實施例根據第二圖與第三圖所示，當電磁輸入筆在X軸天線Xn 上方，以Xn 為中心點兩側各掃描8個天線數，左邊號掃描天線數為Xn-1 ~Xn-8 及右邊號掃描天線數為Xn+1 ~Xn+8 。由各個天線所掃描出來的訊號強弱及掃描的天線數去分析出3個主要的訊號分布，例如：主峰訊號為Xn-2 ~Xn+2 、左峰訊號為Xn-7 ~Xn-4 、右峰訊號為Xn+4 ~Xn+7 。According to the first embodiment and the third figure of the present invention, when the electromagnetic input pen is above the X-axis antenna X n , 8 antennas are scanned on both sides of the X n as the center point, and the number of scanning antennas on the left side is The number of X n-1 ~X n-8 and right-hand scanning antennas is X n+1 ~X n+8 . The signal strength and the number of antennas scanned by each antenna are analyzed to analyze the three main signal distributions. For example, the main peak signal is X n-2 ~X n+2 , and the left peak signal is X n-7 ~X n -4 , the right peak signal is X n+4 ~X n+7 .
此實施例以複數個天線訊號強度的總和為例，左峰訊號取樣為Xn-7 ~Xn-4 的訊號強度值總和，及右峰訊號取樣為Xn+4 ~Xn+7 的訊號強度值總和。當決定好兩側峰訊號的取樣的方式後，在進行傾斜角偵測時，兩側峰値訊號取樣只要開啟Xn-7 ~Xn-4 及Xn+4 ~Xn+7 的天線取樣訊號即可。In this embodiment, taking the sum of the signal strengths of the plurality of antennas as an example, the left peak signal is sampled as the sum of the signal intensity values of X n-7 ~ X n-4 , and the right peak signal is sampled as X n+4 ~ X n+7 . The sum of the signal strength values. After determining the sampling method of the peak signal on both sides, when performing the tilt angle detection, the sampling of the peak signal on both sides only needs to turn on the antennas of X n-7 ~X n-4 and X n+4 ~X n+7 . Sample the signal.
當取樣完成後，左峰訊號取樣為Xn-7 ~Xn-4 的訊號強度值總和 = 左峰訊號值；右峰訊號取樣為Xn+4 ~Xn+7 的訊號強度值總和 = 右峰訊號值，再經過函數運算後，去判斷傾斜角度。以下為其中的一種函數運算去判斷傾斜角度。When the sampling is completed, the left peak signal is sampled as the sum of the signal intensity values of X n-7 ~X n-4 = the left peak signal value; the right peak signal is sampled as the sum of the signal intensity values of X n+4 ~X n+7 = The value of the right peak signal, after the function operation, to determine the tilt angle. The following is one of the function operations to determine the tilt angle.
當訊號取樣完成，已知左峰訊號值及右峰訊號值，此函數運算以X軸兩側峰値訊號值的比例值作為傾斜角的判斷：當筆垂直天線區時，X軸兩側峰値訊號值為相等；
右鋒訊號值/ (右鋒訊號值+ 左峰訊號值) = 1/2 à角度為0度
當筆向右邊傾倒至平行於天線區時，X軸右峰訊號值遠大於左峰的訊號值：
右鋒訊號值/ (右鋒訊號值+ 左峰訊號值) ≒ 1 à角度為90度
當筆向左邊傾倒至平行於天線區時，X軸左峰訊號值遠大於右峰的訊號值：
右鋒訊號值/ (右鋒訊號值+ 左峰訊號值) ≒ 0 à角度為-90度
右鋒訊號值/ (右鋒訊號值+ 左峰訊號值) =比例值B，
而比例值B會落在 0 ≦比例值B ≦ 1之間，可以依據不同的比例值B對應到相對應的角度上。When the signal sampling is completed, the left peak signal value and the right peak signal value are known. This function calculates the value of the peak value of the peak signal on both sides of the X axis as the tilt angle: when the pen is in the vertical antenna area, the peaks on both sides of the X axis The signal values are equal;
Right wing signal value / (right wing signal value + left peak signal value) = 1/2 à angle is 0 degree When the pen is tilted to the right to parallel to the antenna area, the X-axis right peak signal value is much larger than the left peak signal value :
Right wing signal value / (right wing signal value + left peak signal value) ≒ 1 à angle is 90 degrees When the pen is tilted to the left to parallel to the antenna area, the X-axis left peak signal value is much larger than the right peak signal value:
Right wing signal value / (right wing signal value + left peak signal value) ≒ 0 à angle is -90 degrees right wing signal value / (right wing signal value + left peak signal value) = proportional value B,
The proportional value B will fall between the 0 ≦ proportional value B ≦ 1, and can be corresponding to the corresponding angle according to different proportional values B.
以上實施例也可以用左鋒訊號值/ (右鋒訊號值+ 左峰訊號值) = 比例值，所得到的比例值會與上述實施例相同，但是所定義的傾斜方向卻是相反的。所以判斷出傾斜角度與上述實施例差一個負號。The above embodiment can also use the left front signal value / (right edge signal value + left peak signal value) = proportional value, the resulting scale value will be the same as the above embodiment, but the defined tilt direction is opposite. Therefore, it is judged that the tilt angle is a minus sign from the above embodiment.
本發明第二實施例為當電磁輸入筆在X軸天線Xn 上方，以Xn 為中心點兩側各掃描8個天線數，左邊號掃描天線數為Xn-1 ~Xn-8 及右邊號掃描天線數為Xn+1 ~Xn+8 。由各個天線所掃描出來的訊號強弱及掃描的天線數去分析出3個主要的訊號分布，例如：主峰訊號為Xn-2 ~Xn+2 、左峰訊號為Xn-7 ~Xn-4 、右峰訊號為Xn+4 ~Xn+7 。In the second embodiment of the present invention, when the electromagnetic input pen is above the X-axis antenna X n , 8 antennas are scanned on both sides of the X n as the center point, and the number of scanning antennas on the left side is X n-1 ~ X n-8 and The number of scanning antennas on the right side is X n+1 ~X n+8 . The signal strength and the number of antennas scanned by each antenna are analyzed to analyze the three main signal distributions. For example, the main peak signal is X n-2 ~X n+2 , and the left peak signal is X n-7 ~X n -4 , the right peak signal is X n+4 ~X n+7 .
此實施例以單個天線訊號強度為例，左峰訊號取樣為Xn-5 的訊號強度，及右峰訊號取樣為Xn+5 的訊號強度。當決定好兩側峰訊號的取樣的方式後，在進行傾斜角偵測時，兩側峰値訊號取樣只要開啟Xn-5 及Xn+5 的天線取樣訊號即可。In this embodiment, a single antenna signal strength is taken as an example. The left peak signal is sampled as the signal strength of X n-5 , and the right peak signal is sampled as the signal strength of X n+5 . After determining the sampling method of the two side peak signals, when performing the tilt angle detection, the sampling of the peak signal of both sides can be performed by turning on the antenna sampling signals of X n-5 and X n+5 .
當取樣完成後，左峰訊號取樣為Xn-5 的訊號強度值 = 左峰訊號值；右峰訊號取樣為Xn+5 的訊號強度值= 右峰訊號值，再經過函數運算後，去判斷傾斜角度。以下為其中的一種函數運算去判斷傾斜角度。When the sampling is completed, the left peak signal is sampled as the X n-5 signal intensity value = the left peak signal value; the right peak signal is sampled as the X n+5 signal intensity value = the right peak signal value, and then after the function operation, go Determine the tilt angle. The following is one of the function operations to determine the tilt angle.
當訊號取樣完成，已知左峰訊號值及右峰訊號值，此函數運算以X軸兩側峰値訊號值的差值作為傾斜角的判斷：
當筆垂直天線區時，X軸兩側峰値訊號值為相等；
右鋒訊號值–左峰訊號值= 0 à角度為0度
當筆向右邊傾倒至平行於天線區時，X軸右峰訊號值遠大於左峰的訊號值：
右鋒訊號值–左峰訊號值≒ 右峰訊號值à角度為90度
當筆向左邊傾倒至平行於天線區時，X軸左峰訊號值遠大於右峰的訊號值：
右鋒訊號值–左峰訊號值≒ –左峰訊號值à角度為-90度
右鋒訊號值–左峰訊號值 = 差值A，而差值A會落在–左峰訊號值≦差值A ≦右峰訊號值之間，可以依據不同的差值A對應到相對應的角度上。When the signal sampling is completed, the left peak signal value and the right peak signal value are known. This function calculates the difference between the peak signal values on both sides of the X axis as the tilt angle:
When the pen is perpendicular to the antenna area, the peak signal values on both sides of the X axis are equal;
Right wing signal value - left peak signal value = 0 à angle is 0 degrees
When the pen is tilted to the right to be parallel to the antenna area, the X-axis right peak signal value is much larger than the left peak signal value:
Right wing signal value - left peak signal value 右 right peak signal value à angle is 90 degrees
When the pen is tilted to the left to be parallel to the antenna area, the X-axis left peak signal value is much larger than the right peak signal value:
Right wing signal value - left peak signal value ≒ - left peak signal value à angle is -90 degrees right edge signal value - left peak signal value = difference A, and difference A will fall in - left peak signal value ≦ difference A ≦ right peak signal value can be corresponding to the corresponding angle according to different difference A.
以上實施例也可以用左鋒訊號值–右峰訊號值 = 差值，所得到的差值會與上述的實施例差一個負號。可以用一樣的方式判斷出傾斜角度。而Y軸方向的傾斜角度可以依照上述實施例去做判斷。The above embodiment can also use the left front signal value - right peak signal value = difference, and the difference obtained will be a minus sign from the above embodiment. The tilt angle can be judged in the same way. The angle of inclination in the Y-axis direction can be judged in accordance with the above embodiment.
第四圖顯示本發明電磁輸入筆之傾斜角偵測方法一實施例之流程圖。首先，於步驟202中，將電磁輸入筆置於X/Y軸天線Xn /Yn 上方。接著於步驟204中，以天線Xn /Yn 為中心點兩側各掃描a個天線數。然後於步驟206中，根據掃描訊號及掃描的天線數分析中央與兩側主要訊號分佈。接著於步驟208中，決定兩側所需取樣的天線數目。然後於步驟210中，根據取樣的天線數目開啟兩側所需的天線擷取電磁筆的訊號。最後於步驟212中，根據兩側天線取樣訊號判斷電磁輸入筆傾斜角。The fourth figure shows a flow chart of an embodiment of the method for detecting the tilt angle of the electromagnetic input pen of the present invention. First, in step 202, the electromagnetic input pen is placed X / Y-axis antenna X n / Y above n. Next, in step 204, the number of antennas is scanned on both sides of the antenna X n /Y n as a center point. Then in step 206, the main signal distributions on the center and both sides are analyzed based on the scan signal and the number of scanned antennas. Next in step 208, the number of antennas to be sampled on both sides is determined. Then in step 210, the signals of the electromagnetic pens required for the antennas on both sides are turned on according to the number of antennas sampled. Finally, in step 212, the tilt angle of the electromagnetic input pen is determined according to the antenna sampling signals of the two sides.
本發明偵測電磁式輸入筆所在位置兩側訊號強度並取樣兩側訊號峰値的方式進行函數運算，並由計算結果判斷電磁式輸入筆的傾斜角度。如此可以不受到所在位置訊號主峰値的變化而影響傾斜角的準確性，並可減少電磁式輸入筆角度上判斷的誤差。
上述之實施例僅係為說明本發明之技術思想及特點，其目的在使熟悉此技藝之人士能了解本發明之內容並據以實施，當不能據以限定本發明之專利範圍，即凡其他未脫離本發明所揭示精神所完成之各種等效改變或修飾都涵蓋在本發明所揭露的範圍內，均應包含在以下之申請專利範圍內。
The invention detects the signal intensity on both sides of the position of the electromagnetic input pen and samples the peaks of the signals on both sides to perform a function operation, and judges the inclination angle of the electromagnetic input pen from the calculation result. In this way, the accuracy of the tilt angle can be affected without being affected by the change of the main peak of the position signal, and the error of the judgment of the angle of the electromagnetic input pen can be reduced.
The above-mentioned embodiments are merely illustrative of the technical idea and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art and can be implemented according to the scope of the invention, that is, other Various equivalent changes or modifications may be made without departing from the spirit and scope of the invention, and are intended to be included within the scope of the invention.
102‧‧‧電磁感應控制基板
104‧‧‧天線區
106‧‧‧電磁輸入筆
202‧‧‧電磁輸入筆在X/Y軸天線Xn/Yn上方。
204‧‧‧以Xn/Yn為中心點兩側各掃描a個天線數
206‧‧‧根據掃描訊號及掃描的天線數分析中央與兩側主要訊號分佈
208‧‧‧決定兩側所需取樣的天線數目
210‧‧‧根據取樣的天線數目開啟兩側所需的天線擷取電磁筆的訊號
212‧‧‧根據兩側天線取樣訊號判斷電磁輸入筆傾斜角102‧‧‧Electromagnetic induction control substrate
104‧‧‧Antenna area
106‧‧‧Electromagnetic input pen
202‧‧‧The electromagnetic input pen is above the X/Y axis antenna X n /Y n .
204‧‧‧A number of antennas scanned on both sides of X n /Y n
206‧‧‧Analysis of the distribution of main signals on the center and on both sides based on the scan signal and the number of antennas scanned
208‧‧‧Determining the number of antennas to be sampled on both sides
210‧‧‧Open the required antenna on both sides according to the number of antennas sampled
212‧‧‧Determination of the inclination angle of the electromagnetic input pen according to the sampling signals of the antennas on both sides
第一圖顯示本發明一實施例之一電磁感應輸入系統。
第二圖顯示電磁式輸入筆於電磁感應輸入系統的天線區（Xn-8
~ Xn+8
）傾斜一角度的示意圖。
第三圖顯示為經由電磁式輸入系統的天線區所擷取到的X軸電壓訊號與座標示意圖。
第四圖顯示本發明電磁輸入筆之傾斜角偵測方法一實施例之流程圖。
The first figure shows an electromagnetic induction input system in accordance with one embodiment of the present invention.
The second figure shows a schematic diagram of the electromagnetic input pen tilted at an angle in the antenna area (X n-8 ~ X n+8 ) of the electromagnetic induction input system.
The third figure shows the X-axis voltage signal and coordinates captured by the antenna area of the electromagnetic input system.
The fourth figure shows a flow chart of an embodiment of the method for detecting the tilt angle of the electromagnetic input pen of the present invention.
202‧‧‧電磁輸入筆在X/Y軸天線Xn/Yn上方 202‧‧‧Electromagnetic input pen above the X/Y axis antenna X n /Y n
204‧‧‧以Xn/Yn為中心點兩側各掃描a個天線數 204‧‧‧A number of antennas scanned on both sides of X n /Y n
206‧‧‧根據掃描訊號及掃描的天線數分析中央與兩側主要訊號分佈 206‧‧‧Analysis of the distribution of main signals on the center and on both sides based on the scan signal and the number of antennas scanned
208‧‧‧決定兩側所需取樣的天線數目 208‧‧‧Determining the number of antennas to be sampled on both sides
210‧‧‧根據取樣的天線數目開啟兩側所需的天線擷取電磁筆的訊號 210‧‧‧Open the required antenna on both sides according to the number of antennas sampled
212‧‧‧根據兩側天線取樣訊號判斷電磁輸入筆傾斜角 212‧‧‧Determination of the inclination angle of the electromagnetic input pen according to the sampling signals of the antennas on both sides
Claims (5)
提供一電磁輸入筆在X/Y軸天線Xn /Yn 上方；
以天線Xn /Yn 為中心點兩側各掃描a天線數；
根據掃描訊號及掃描的a天線數分析天線Xn /Yn 中心點與兩側主要訊號分佈；
決定兩側所需取樣的天線數目；
根據取樣的天線數目開啟兩側所需的天線擷取電磁筆的訊號；及
根據兩側天線取樣訊號判斷該電磁輸入筆之一傾斜角。A method for detecting a tilt angle of an electromagnetic input pen, the method comprising:
Providing an electromagnetic input pen over the X/Y axis antenna X n /Y n ;
The number of antennas scanned on both sides of the antenna X n /Y n is the center point;
According to the scanning signal and the number of scanned a antennas, the antenna X n /Y n center point and the main signal distribution on both sides are analyzed;
Determine the number of antennas to be sampled on both sides;
According to the number of antennas sampled, the antennas required for both sides are turned on to extract the signal of the electromagnetic pen; and the tilt angle of the electromagnetic input pen is determined according to the sampling signals of the antennas on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99103407A TWI419018B (en) | 2010-02-04 | 2010-02-04 | Method for determining incline angle of electromagnetic pointer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99103407A TWI419018B (en) | 2010-02-04 | 2010-02-04 | Method for determining incline angle of electromagnetic pointer |
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| Publication Number | Publication Date |
|---|---|
| TW201128461A TW201128461A (en) | 2011-08-16 |
| TWI419018B true TWI419018B (en) | 2013-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912147A (en) * | 2015-12-08 | 2016-08-31 | 汉王科技股份有限公司 | Initiative capacitance pen, inclination detection method of initiative capacitance pen, capacitance touch screen and touch system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI501118B (en) * | 2013-06-18 | 2015-09-21 | Wacom Co Ltd | Method for determining incline angle of electromagnetic pointer |
| CN105786289B (en) * | 2016-03-31 | 2018-12-14 | 联想(北京)有限公司 | A kind of method and electronic equipment reducing screen input nonlinearities |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748110A (en) * | 1995-04-13 | 1998-05-05 | Wacom Co., Ltd. | Angular input information system relative to a tablet for determining an incline angle of a pointer or stylus |
| US5751229A (en) * | 1994-04-28 | 1998-05-12 | Wacom Co., Ltd. | Angular information input system |
| TW440683B (en) * | 1998-08-26 | 2001-06-16 | Synaptics Ltd | Position detector |
| TW200405193A (en) * | 2002-06-07 | 2004-04-01 | Koninkl Philips Electronics Nv | Input system |
-
2010
- 2010-02-04 TW TW99103407A patent/TWI419018B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5751229A (en) * | 1994-04-28 | 1998-05-12 | Wacom Co., Ltd. | Angular information input system |
| US5748110A (en) * | 1995-04-13 | 1998-05-05 | Wacom Co., Ltd. | Angular input information system relative to a tablet for determining an incline angle of a pointer or stylus |
| TW440683B (en) * | 1998-08-26 | 2001-06-16 | Synaptics Ltd | Position detector |
| TW200405193A (en) * | 2002-06-07 | 2004-04-01 | Koninkl Philips Electronics Nv | Input system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912147A (en) * | 2015-12-08 | 2016-08-31 | 汉王科技股份有限公司 | Initiative capacitance pen, inclination detection method of initiative capacitance pen, capacitance touch screen and touch system |
| CN105912147B (en) * | 2015-12-08 | 2020-05-12 | 汉王科技股份有限公司 | Active capacitive pen, inclination angle detection method thereof, capacitive touch screen and touch system |
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| TW201128461A (en) | 2011-08-16 |
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