TW201621599A - Capacitive touch device and object identifying method for the capacitive touch device - Google Patents
Capacitive touch device and object identifying method for the capacitive touch device Download PDFInfo
- Publication number
- TW201621599A TW201621599A TW104111705A TW104111705A TW201621599A TW 201621599 A TW201621599 A TW 201621599A TW 104111705 A TW104111705 A TW 104111705A TW 104111705 A TW104111705 A TW 104111705A TW 201621599 A TW201621599 A TW 201621599A
- Authority
- TW
- Taiwan
- Prior art keywords
- sensing
- value
- difference
- input device
- capacitive touch
- Prior art date
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
Description
本發明為一種輸入裝置及物件辨識方法，特別是關於電容式觸控裝置及其物件辨識方法。The invention relates to an input device and an object identification method, in particular to a capacitive touch device and an object identification method thereof.
現有的觸控輸入裝置（如觸控墊(touch pad)、觸控面板(touch panel)）可接受像手指、觸控筆等不同物件的操作而執行不同功能的觸控應用，其需要正確地辨識物件的種類。如圖13所示，一種既有技術是在輸入裝置130上定義一觸控筆書寫區域132，但這種方法會侷限可書寫的面積以致輸入不易，且只能在固定的區域內書寫而無法任意移動書寫位置，對使用者的操作而言甚為不便。Existing touch input devices (such as touch pads and touch panels) can accept touch functions of different functions such as fingers and stylus to perform different functions, which need to be correctly Identify the type of object. As shown in FIG. 13, one prior art defines a stylus writing area 132 on the input device 130, but this method limits the area that can be written so that the input is not easy and can only be written in a fixed area. Any movement of the writing position is inconvenient for the user's operation.
一種既有的物件種類辨識技術是依據物件與觸控輸入裝置的接觸面積判斷該物件的種類。請參考圖14A所示，為一既有電容式觸控面板140的示意圖，其包含有複數個感應電極142，圖中僅顯示其中一軸向的感應電極142為例說明，相鄰的感應電極142之間相隔一間距L(sensor pitch)；當不同種類的物件O1~O3接觸該觸控面板Y3的表面時，可分別得到如圖14B的感應量，該物件O1~O3係分別以觸控筆、指尖及手指為例加以說明。該第三物件O3(手指)及第一物件O1(指尖)之各別的接觸面積及感應量有明顯的區別，可以依據接觸面積及感應量判斷出第三物件O3及第一物件O1的種類；然而，當使用者利用其指尖(即第二物件O2)操作該觸控面板Y3時，第二物件O2之感應量與第一物件O1的感應量較為接近，無法利用感應量的大小辨識種類，且第二物件O2與第一物件O1的接觸面積無明顯差異，這是因為相鄰感應電極142的間距L較大，該觸控面板140所能表示的面積解析度相對較低，因此觸控裝置無法依據接觸面積區別出物件O1與O2。An existing object type identification technology determines the type of the object based on the contact area of the object and the touch input device. Please refer to FIG. 14A , which is a schematic diagram of an existing capacitive touch panel 140 , which includes a plurality of sensing electrodes 142 . Only one of the axial sensing electrodes 142 is shown as an example, and adjacent sensing electrodes are illustrated. 142 is separated by a distance L (sensor pitch); when different types of objects O1~O3 contact the surface of the touch panel Y3, the sensing amount of FIG. 14B can be respectively obtained, and the objects O1 to O3 are respectively touched. Pens, fingertips and fingers are used as examples. The respective contact areas and the sensing amounts of the third object O3 (finger) and the first object O1 (fingertip) are significantly different, and the third object O3 and the first object O1 can be determined according to the contact area and the sensing amount. However, when the user operates the touch panel Y3 with his fingertip (ie, the second object O2), the amount of sensing of the second object O2 is closer to the sensing amount of the first object O1, and the amount of the sensing amount cannot be utilized. The type of the identification is different, and the contact area between the second object O2 and the first object O1 is not significantly different. Because the distance L between the adjacent sensing electrodes 142 is large, the area resolution of the touch panel 140 can be relatively low. Therefore, the touch device cannot distinguish the objects O1 and O2 according to the contact area.
從前述說明可知，當使用者以指尖進行觸控操作時，既有電容式觸控裝置無法準確地辨識出指尖或觸控筆，故有待進一步解決此技術問題之必要。As can be seen from the foregoing description, when the user performs a touch operation with the fingertip, the capacitive touch device cannot accurately recognize the fingertip or the stylus, and thus it is necessary to further solve the technical problem.
本發明之一主要目的是提供一種電容式觸控裝置，可提高物件辨識的準度。One of the main objects of the present invention is to provide a capacitive touch device that can improve the accuracy of object recognition.
為達成前述目的，本發明之電容式觸控裝置包含有： 一觸控輸入裝置，具有複數個感應電極；以及 一控制器，連接該複數個感應電極，該控制器儲存一手指寬度最小值，該手指寬度最小值表示控制器預設手指的最小尺寸； 其中，該觸控輸入裝置的兩相鄰感應電極的間距不大於該手指寬度最小值的一半。To achieve the foregoing objective, the capacitive touch device of the present invention comprises: a touch input device having a plurality of sensing electrodes; and a controller connecting the plurality of sensing electrodes, the controller storing a minimum value of a finger width, The minimum value of the finger width indicates the minimum size of the preset finger of the controller; wherein the distance between two adjacent sensing electrodes of the touch input device is not more than half of the minimum value of the finger width.
前述電容式觸控裝置之觸控輸入裝置要求兩相鄰感應電極的間距不大於該手指寬度最小值的一半，能提高該觸控輸入裝置之解析度，令控制器可依據觸控輸入裝置之感應資訊區別不同物件(如觸控筆、指尖)。The touch input device of the capacitive touch device requires that the distance between two adjacent sensing electrodes is not more than half of the minimum value of the finger width, which can improve the resolution of the touch input device, so that the controller can be based on the touch input device. Sensing information distinguishes between different objects (such as stylus and fingertips).
本發明之一主要目的是提供一種電容式觸控裝置的物件辨識方法，可提高物件辨識的準度。One of the main objects of the present invention is to provide an object identification method for a capacitive touch device, which can improve the accuracy of object recognition.
為達成前述目的，該電容式觸控裝置的物件辨識方法包含： 掃描該觸控輸入裝置以取得一物件接觸該觸控輸入裝置時所產生的一最大感應值及該最大感應值鄰近位置的第一感應值； 若該最大感應值與該第一感應值的差異程度大於一第一設定值，判斷該物件為一觸控筆。To achieve the foregoing objective, the method for identifying an object of the capacitive touch device includes: scanning the touch input device to obtain a maximum sensing value generated by an object contacting the touch input device and a position adjacent to the maximum sensing value An inductive value; if the difference between the maximum sensing value and the first sensing value is greater than a first setting value, determining that the object is a stylus.
經由前述方法，於取得一物件接觸觸控輸入裝置時所產生的一最大感應值及該最大感應值其鄰近位置的第一感應值後，若判斷該最大感應值與該第一感應值之間的差異程度大於第一設定值，該物件即視為一觸控筆。According to the foregoing method, after obtaining a maximum sensing value generated by an object contacting the touch input device and a first sensing value of the proximity position of the maximum sensing value, if it is determined between the maximum sensing value and the first sensing value The difference is greater than the first set value, and the object is regarded as a stylus.
如圖1所示，本發明電容式觸控裝置的一實施例包含有一觸控輸入裝置10及一控制器100。該觸控輸入裝置10可以是一觸控面板(touch panel)、一觸控墊(touch pad)等輸入設備，具有複數個感應電極，兩相鄰感應電極之間的間距為L，該複數個感應電極包含有複數個X軸感應電極X1~Xm和複數個Y軸感應電極Y1~Yn，各該X軸感應電極X1~Xm和各該Y軸感應電極Y1~Yn垂直相交，於相交處分別構成一感應點，這些感應點以矩陣形式排列。該控制器100透過走線分別與各該X軸感應電極X1~Xm和各該Y軸感應電極Y1~Yn連接，並對各X軸感應電極X1~Xm和各該Y軸感應電極Y1~Yn進行掃描，以讀取其上的感應資訊；在該控制器100內儲存有一手指寬度最小值FW，該手指寬度最小值表示控制器預設手指的最小尺寸，其中，所謂的尺寸可以是長度或寬度，也可以是面積。且該觸控輸入裝置10之相鄰感應電極的間距L不大於該手指寬度最小值FW的一半，即 L＜=FW/2，在一實施例中，該手指寬度最小值FW可設定為7mm。As shown in FIG. 1 , an embodiment of a capacitive touch device of the present invention includes a touch input device 10 and a controller 100 . The touch input device 10 can be an input device such as a touch panel or a touch pad, and has a plurality of sensing electrodes. The spacing between two adjacent sensing electrodes is L. The sensing electrode includes a plurality of X-axis sensing electrodes X1~Xm and a plurality of Y-axis sensing electrodes Y1~Yn, and the X-axis sensing electrodes X1~Xm and the Y-axis sensing electrodes Y1~Yn intersect perpendicularly at intersections. Forming a sensing point, these sensing points are arranged in a matrix form. The controller 100 is connected to each of the X-axis sensing electrodes X1~Xm and the Y-axis sensing electrodes Y1~Yn through a trace, and the X-axis sensing electrodes X1~Xm and the Y-axis sensing electrodes Y1~Yn Scanning to read the sensing information thereon; storing a minimum finger width FW in the controller 100, the minimum value of the finger width indicating the minimum size of the preset finger of the controller, wherein the so-called size may be the length or The width can also be the area. The distance L between adjacent sensing electrodes of the touch input device 10 is not more than half of the finger width minimum value FW, that is, L<=FW/2. In an embodiment, the finger width minimum value FW can be set to 7 mm. .
本發明限制相鄰感應電極的間距L不大於該手指寬度最小值FW的二分之一，有助於辨識不同種類的物件。如圖2所示，第一物件O1(觸控筆)與第二物件O2(指尖)接觸該觸控輸入裝置10時，縱然第一、第二物件之接觸面積差異不大，但由於該觸控輸入裝置10之解析度已經提高，足以反應不同物件之差異，如圖2所示，該第一物件O1係對應到較少數量的感應電極，但該第二物件O2對應到較多數量的感應電極，根據感應到物件接觸的感應電極數量，觸控輸入裝置10可據以判斷物件種類。The invention limits the spacing L of adjacent sensing electrodes to be less than one-half of the minimum value FW of the finger width, which helps to identify different kinds of objects. As shown in FIG. 2, when the first object O1 (stylus) and the second object O2 (fingertip) are in contact with the touch input device 10, although the contact area between the first and second objects is not large, The resolution of the touch input device 10 has been increased enough to reflect the difference between different objects. As shown in FIG. 2, the first object O1 corresponds to a smaller number of sensing electrodes, but the second object O2 corresponds to a larger number. The sensing electrode 10 can determine the type of the object according to the number of sensing electrodes that sense the contact of the object.
該控制器100可執行一第一物件識別方法，配合應用於該觸控輸入裝置10以判斷接觸該觸控輸入裝置10的物件是否為一觸控筆。其中，進一步要求該觸控輸入裝置10之兩相鄰感應電極的間距L不小於一觸控筆筆頭寬度值SW的二倍，即2SW＜= L＜=FW/2，在一實施例中，該觸控筆筆頭寬度值SW可為1.5mm。請參考圖3，該第一物件識別方法，包含： S31：掃描該觸控輸入裝置以取得一物件接觸該觸控輸入裝置時所產生的一最大感應值及該最大感應值鄰近感應位置的第一感應值； S32：若該最大感應值與該第一感應值的差異程度大於一第一設定值，判斷該物件為一觸控筆。The controller 100 can be configured to apply a first object identification method to the touch input device 10 to determine whether the object contacting the touch input device 10 is a stylus. The distance L between two adjacent sensing electrodes of the touch input device 10 is further required to be not less than twice the width of the stylus pen width SW, that is, 2SW<= L<=FW/2. In an embodiment, The stylus pen width value SW can be 1.5 mm. Referring to FIG. 3, the first object identification method includes: S31: scanning the touch input device to obtain a maximum sensing value generated when an object contacts the touch input device and a position of the maximum sensing value adjacent to the sensing position An inductive value; S32: if the difference between the maximum sensing value and the first sensing value is greater than a first setting value, determining that the object is a stylus.
在一實施例中，步驟S32包括分別計算最大感應值與鄰近感應點的第一感應值之間的差異程度，也就是會獲得至少一個差異程度(1至8個)。所謂的鄰近感應點係例如上、下、左、右、左上、左下、右上與右下等八個方向相鄰的感應點。只要有一個差異程度大於第一設定值，即可判斷該接觸物件為觸控筆。在前述步驟S31，當第一物件O1或第二物件O2接觸到該觸控輸入裝置10時，該控制器100藉由掃描該觸控輸入裝置10可得到該第一物件O1或第二物件O2對應接觸之感應點產生的感應值，分別如圖4B及圖4C所示。每一物件所引起之感應值中可找出一最大感應值及其鄰近感應點的第一感應值。以第一物件O1而言，如圖4B所示，以具有最大感應值250的感應點為中心，其鄰近感應點A1~A8所產生的第一感應值皆小於該最大感應值250；如圖4C所示，該第二物件O2所對應的最大感應值為450，以該具有最大感應值450的感應點為中心，其鄰近的感應點B1~B8所產生的第一感應值皆小於該最大感應值450。In an embodiment, step S32 includes separately calculating a degree of difference between the maximum sensing value and the first sensing value of the proximity sensing point, that is, obtaining at least one degree of difference (1 to 8). The so-called proximity sensing points are sensing points adjacent in eight directions such as up, down, left, right, upper left, lower left, upper right and lower right. As long as there is a difference greater than the first set value, the contact object can be judged to be a stylus. In the foregoing step S31, when the first object O1 or the second object O2 contacts the touch input device 10, the controller 100 can obtain the first object O1 or the second object O2 by scanning the touch input device 10. The sensing values generated by the sensing points corresponding to the contacts are shown in Figures 4B and 4C, respectively. Among the sensing values caused by each object, a maximum sensing value and a first sensing value of the proximity sensing point can be found. In the case of the first object O1, as shown in FIG. 4B, the first sensing value generated by the proximity sensing points A1 to A8 is smaller than the maximum sensing value 250, centering on the sensing point having the largest sensing value 250; As shown in FIG. 4C, the maximum inductive value corresponding to the second object O2 is 450, and the first sensing value generated by the adjacent sensing points B1 to B8 is smaller than the maximum centering on the sensing point having the maximum sensing value 450. The induction value is 450.
依據上述步驟S32，進一步比較各物件之最大感應值與該第一感應值的差異程度是否大於一第一設定值，其中，所謂的差異程度可以是該最大感應值與該第一感應值的差值。最大感應值250與該相鄰感應點A7的感應值5之間具有明顯的差異程度，在一實施例中，差異程度是依據差值判斷並且第一設定值為200，最大感應值250與該第一感應值5之間的差值(250-5=245)大於該第一設定值200，因此判斷接觸的第一物件O1為一觸控筆。在圖4C中，該最大感應值450與相鄰的感應點B1~B8感應值沒有顯著落差，各相鄰感應點B1~B8的感應值與最大感應值450的差值皆未大於該第一設定值，所以該第二物件O2不會被判斷為觸控筆。其中，該第一設定值可參考觸控輸入裝置實際感測一觸控筆接觸的感應量分佈而決定。According to the above step S32, it is further compared whether the difference between the maximum sensing value of each object and the first sensing value is greater than a first setting value, wherein the degree of difference may be the difference between the maximum sensing value and the first sensing value. value. There is a significant difference between the maximum sensing value 250 and the sensing value 5 of the adjacent sensing point A7. In an embodiment, the degree of difference is determined according to the difference value and the first setting value is 200, and the maximum sensing value 250 is The difference (250-5=245) between the first sensing values 5 is greater than the first set value 200, so that it is determined that the first object O1 that is in contact is a stylus. In FIG. 4C, the maximum sensing value 450 has no significant difference between the sensing values of the adjacent sensing points B1 and B8, and the difference between the sensing value of each of the adjacent sensing points B1 and B8 and the maximum sensing value 450 is not greater than the first The set value, so the second object O2 is not judged as a stylus. The first set value may be determined by referring to the sensing amount distribution of the touch pen input device actually sensing a touch pen contact.
在另一實施例中，所謂的差異程度可以是該最大感應值與該第一感應值之間的比值。以圖4B為例，第一設定值為45，第一物件O1對應之最大感應值250與該相鄰感應點B7的感應值5的相對比值(250/5=50)大於該第一設定值45，因此判斷接觸的第一物件O1為觸控筆。相反地，以圖4C所示的第二物件O2而言，其對應的該最大感應值450與相鄰感應點B1~B8的各個比值皆未大於該第一設定值45，所以該第二物件O2不會被判斷為觸控筆。In another embodiment, the so-called degree of difference may be the ratio between the maximum sensed value and the first sensed value. Taking FIG. 4B as an example, the first set value is 45, and the relative ratio (250/5=50) of the maximum sensing value 250 corresponding to the first object O1 to the sensing value 5 of the adjacent sensing point B7 is greater than the first set value. 45. Therefore, it is judged that the first object O1 that is in contact is a stylus. Conversely, in the case of the second object O2 shown in FIG. 4C, the corresponding ratios of the maximum sensing value 450 and the adjacent sensing points B1 B B8 are not greater than the first setting value 45, so the second object O2 will not be judged as a stylus.
請參考圖5A所示，當前述步驟S32判斷差異程度未大於該第一設定值時，該控制器100可進一步執行下述步驟S33A~S35A： S33A：加總對應該物件的所有感應值以獲得一感應總值，以第二物件O2為例，係加總該第二物件O2所產生的所有感應值，以獲得一感應總值，例如在圖4C中，所有感應值加總後(450+375+383+401+128+366+411+370+350=3534)可得到一感應總值3534； S34A：將該感應總值除以一常數獲得一第二感應值，在此可將常數設定為10，上述步驟得到的感應總值3534除以該常數10後可得到一第二感應值(3534/10=353.4)； S35A：當該第二感應值大於一手指感應臨界值，判斷該物件不是一觸控筆，其中在該控制器100內部係儲存對應該手指寬度最小值FW的一手指感應臨界值，例如將手指感應值設定為300，該第二物件O2所計算出來之第二感應值353.4大於該手指感應值300，因而可確認該第二物件O2之種類不是一觸控筆，在其他實施例中，亦可判斷該第二物件O2是一手指。Referring to FIG. 5A, when the foregoing step S32 determines that the degree of difference is not greater than the first set value, the controller 100 may further perform the following steps S33A to S35A: S33A: summing all the sensed values of the corresponding objects to obtain The total value of the induction, taking the second object O2 as an example, sums up all the induced values generated by the second object O2 to obtain a total value of induction, for example, in FIG. 4C, after all the induced values are summed (450+ 375+383+401+128+366+411+370+350=3534) can get a total inductance of 3534; S34A: divide the total value of the induction by a constant to obtain a second sensing value, where the constant can be set 10, the total inductance 3534 obtained by the above step is divided by the constant 10 to obtain a second sensing value (3534/10=353.4); S35A: when the second sensing value is greater than a finger sensing threshold, the object is determined. The stylus is not a stylus. The inside of the controller 100 stores a finger sensing threshold corresponding to the finger width minimum value FW, for example, setting the finger sensing value to 300, and the second sensing calculated by the second object O2. The value 353.4 is greater than the finger sensing value 300, so the second can be confirmed O2 is not a member of the type stylus, in other embodiments, it may determine whether the second object is a finger O2.
依據上述步驟S33A~35A可針對差異程度未大於該第一設定值之情況再進一步確認，這是因為在步驟S32之後，還無法確認物件的種類，只知道該接觸物件尚未被判斷為觸控筆。在不同實施例中，前述步驟S34A亦可省略，直接依據感應總值進行判斷而不用再除以一常數，請參考圖5B所示，當前述步驟S32判斷差異程度未大於該第一設定值時，該控制器100可進一步執行下述步驟S33B~S34B： S33B：加總對應該物件的所有感應值以獲得一感應總值；以第二物件O2為例，加總該第二物件O2所產生的所有感應值，以獲得一感應總值，例如在圖4C中本實施例中所有感應值加總後(450+375+383+401+128+366+411+370+350=3534)可得到一感應總值3534； S34B：當該感應總值大於一手指感應臨界值，判斷該物件不是一觸控筆；其中，在該控制器100內部可儲存對應該手指寬度最小值FW的一手指感應臨界值，例如將手指感應值設定為2500，該第二物件O2所計算出來之感應總值係大於該手指感應值2500，確認該第二物件O2之種類不是一觸控筆，在其他實施例中，亦可判斷該第二物件O2是一手指。According to the above steps S33A-35A, it can be further confirmed that the difference degree is not greater than the first set value. This is because after the step S32, the type of the object cannot be confirmed, and only the contact object has not been judged as the stylus. . In the different embodiments, the foregoing step S34A may be omitted, and the judgment may be directly performed according to the total value of the sensing without dividing by a constant. Referring to FIG. 5B, when the foregoing step S32 determines that the difference degree is not greater than the first set value, The controller 100 may further perform the following steps S33B to S34B: S33B: summing all the sensing values of the corresponding object to obtain a total sensing value; taking the second object O2 as an example, adding the second object O2 All the sensed values are obtained to obtain a total sense of induction, for example, after summing all the sensed values in this embodiment in FIG. 4C (450+375+383+401+128+366+411+370+350=3534) a total value of 3534; S34B: when the total value of the sensing is greater than a finger sensing threshold, determining that the object is not a stylus; wherein, within the controller 100, a finger sensing corresponding to the finger width minimum FW can be stored The threshold value, for example, the finger sensing value is set to 2500, and the total sensing value calculated by the second object O2 is greater than the finger sensing value 2500, confirming that the type of the second object O2 is not a stylus, in other embodiments In the middle, the second thing can also be judged Piece O2 is a finger.
該控制器100除了可採用前述第一物件識別方法辨識接觸物件，也可採用如圖6所示的第二物件識別方法加以辨識，該第二物件識別方法包含有： S61：掃描該觸控輸入裝置以取得複數個感應電容訊號； S62：由該複數個感應電容訊號中識別一最大感應電容訊號； S63：參照該最大感應電容訊號與其周遭感應點的感應電容訊號的分佈情形，來辨識物件。The controller 100 can identify the contact object by using the first object identification method, and can also be identified by the second object recognition method as shown in FIG. 6. The second object identification method includes: S61: scanning the touch input The device obtains a plurality of sensing capacitor signals; S62: identifying a maximum sensing capacitance signal from the plurality of sensing capacitor signals; S63: identifying the object by referring to a distribution of the sensing capacitor signals of the maximum sensing capacitor signal and its surrounding sensing points.
請參考圖7A所示，為方便說明該第二物件識別方法，一第一物件O1及一第二物件O2在觸控輸入裝置10上所產生之對應的感應範圍R1、R2簡化為圓形表示。當執行步驟S61，可經由掃描該觸控輸入裝置10而得到該第一物件O1及第二物件O2在觸控輸入裝置10上產生的對應感應範圍R1、R2，以及在各感應範圍R1、R2內的複數個感應電容訊號之大小與分佈情況。當執行步驟S62，可以從各感應範圍R1、R2內的複數個感應電容訊號找出一最大感應電容訊號C1、C2，以及該最大感應電容訊號C1、C2的對應位置P1、P2。Please refer to FIG. 7A. For convenience of the second object identification method, the corresponding sensing ranges R1 and R2 generated by the first object O1 and the second object O2 on the touch input device 10 are simplified to a circular representation. . When the step S61 is performed, the corresponding sensing ranges R1 and R2 generated by the first object O1 and the second object O2 on the touch input device 10 can be obtained by scanning the touch input device 10, and in each sensing range R1, R2. The size and distribution of a plurality of sensing capacitor signals. When step S62 is performed, a maximum of the sensing capacitance signals C1 and C2 and corresponding positions P1 and P2 of the maximum sensing capacitance signals C1 and C2 can be found from the plurality of sensing capacitance signals in the sensing ranges R1 and R2.
在步驟S63，取得該最大感應電容訊號C1、C2及其對應位置P1、P2後，即參照該最大感應電容訊號C1、C2與其周遭位置T1、T2的感應電容訊號的分佈情形來辨識該物件，即比較位置P1到T1的感應電容訊號變化情形，與位置P2到T2的感應電容訊號變化情形來進行識別，其中，感應電容訊號變化較明顯的物件視為觸控筆。After obtaining the maximum sensing capacitance signals C1 and C2 and their corresponding positions P1 and P2 in step S63, the object is identified by referring to the distribution of the sensing capacitance signals of the maximum sensing capacitance signals C1 and C2 and their surrounding positions T1 and T2. That is, the change of the sensing capacitance signal of the position P1 to T1 is compared with the change of the sensing capacitance signal of the position P2 to T2, and the object with the obvious change of the sensing capacitance signal is regarded as the stylus.
更進一步詳細說明決定該周遭位置T1、T2的作法。以最大感應電容訊號C1、C2的一預定比例（例如60%）為一設定值THD1、THD2 （THD1=60%×C1，THD2=60%×C2），根據設定值THD1、THD2可在感應範圍R1、R2中定出如虛線所示的範圍R10、R20，其中，在範圍R10以內的感應電容訊號大於或等於該設定值THD1，同理在範圍R20以內的感應電容訊號大於或等於該設定值THD2。在範圍R10、R20的邊界上分別找出與位置P1、P2具有最短距離的位置為T1、T2，為便於理解及方便說明，該位置T1、T2上的感應電容訊號分別等於設定值THD1、THD2，但是實際上的感應電容訊號可能未必等於設定值THD1、THD2，但無論是以設定值THD1、THD2或實際值進行後續計算，均可達到判斷目的。The practice of determining the surrounding locations T1, T2 will be described in further detail. A predetermined ratio (for example, 60%) of the maximum induced capacitance signals C1 and C2 is a set value THD1, THD2 (THD1=60%×C1, THD2=60%×C2), and the sensing range is possible according to the set values THD1 and THD2. In R1 and R2, a range R10 and R20 as indicated by a broken line is defined, wherein the sensing capacitance signal within the range R10 is greater than or equal to the set value THD1, and the sensing capacitance signal within the range R20 is equal to or greater than the set value. THD2. Find the position with the shortest distance from the positions P1 and P2 on the boundary of the range R10 and R20 as T1 and T2. For ease of understanding and convenience of explanation, the induced capacitance signals at the positions T1 and T2 are equal to the set values THD1 and THD2, respectively. However, the actual sensing capacitance signal may not necessarily be equal to the set values THD1 and THD2, but the subsequent calculation can be achieved regardless of the set value THD1, THD2 or the actual value.
請再參考圖7B所示，係表示在圖7A中分別沿著P1至T1以及P2至T2所對應的感應電容訊號分佈示意圖。首先計算出最大感應電容訊號C1、C2與設定值THD1、THD2之間的第一差值ΔC1、ΔC2；再計算位置P1、P2與位置T1、T2之間距離的第二差值ΔP1、ΔP2；依據所計算出的第一差值ΔC1、ΔC2及第二差值ΔP1、ΔP2的相對關係，可辨識物件是否為一觸控筆。在一實例例中可以計算出該第一差值ΔC1、ΔC2及第二差值ΔP1、ΔP2的比值(斜率)ΔV1、ΔV2，其計算式如下： 利用上述計算出的比值ΔV1、ΔV2判斷物件是否為觸控筆。在一實施例中，可以預設一門檻值來決定，當比值大於該門檻值時，將物件判斷為觸控筆。Referring to FIG. 7B again, a schematic diagram of the distribution of the sensing capacitance signals corresponding to P1 to T1 and P2 to T2 in FIG. 7A is shown. First calculating a first difference ΔC1, ΔC2 between the maximum induced capacitance signals C1, C2 and the set values THD1, THD2; and calculating a second difference ΔP1, ΔP2 between the positions P1, P2 and the distance between the positions T1, T2; Based on the calculated relative relationship between the first difference ΔC1, ΔC2 and the second difference ΔP1, ΔP2, it can be identified whether the object is a stylus. In an example, the ratio (slope) ΔV1, ΔV2 of the first difference ΔC1, ΔC2 and the second difference ΔP1, ΔP2 can be calculated, and the calculation formula is as follows: The ratio ΔV1, ΔV2 calculated above is used to determine whether the object is a stylus. In an embodiment, a threshold may be preset to determine that the object is determined to be a stylus when the ratio is greater than the threshold.
依據圖7B上所示的幾何圖案可看出第一差值ΔC1及第二差值ΔP1分別作為一三角形的兩邊，第一差值ΔC2及第二差值ΔP2也是分別作為另一三角形的兩邊，因此，除了基於比值進行判斷之外，亦可利用其它計算出來的相對關係進行判斷。例如利用該第一差值ΔC1、ΔC2及第二差值ΔP1、ΔP2計算出各三角形的夾角θ1、θ2來進行判斷，或是以三角函數值tanθ1、tanθ2，或其它相對的三角函數值與角度值等進行判斷。According to the geometric pattern shown in FIG. 7B, it can be seen that the first difference ΔC1 and the second difference ΔP1 respectively serve as two sides of a triangle, and the first difference ΔC2 and the second difference ΔP2 are also respectively regarded as two sides of another triangle. Therefore, in addition to the judgment based on the ratio, other calculated relative relationships can also be used for judgment. For example, the angles θ1 and θ2 of the respective triangles are calculated by using the first difference values ΔC1 and ΔC2 and the second difference values ΔP1 and ΔP2, or are determined by trigonometric values tan θ1, tan θ2, or other relative trigonometric functions and angles. The value is judged.
在另一實施例中該控制器100還可採用一第三物件識別方法識，該第三物件識別方法主要是依據物件在接觸該觸控輸入裝置10時所產生之懸浮(hover)感應資訊判斷該物件的種類。首先說明懸浮感應的原理，如圖8所示，當有一物件與觸控輸入裝置10相接觸後，經過掃描該觸控輸入裝置10可得到該物件直接接觸該觸控輸入裝置10而產生的一觸碰感應群A，該觸碰感應群A中的感應點具有大於一第一感應臨界值(touch threshold)的感應值。該物件除了直接接觸的部位會對感應電極引起電容值變化外，該物件靠近該觸控輸入裝置10的其它部位也會引起電容值改變，多個感應值大於一第二感應值(hover threshold)、但小於該第一感應值的感應點即組成一懸浮感應群B(如斜線標示區域)。例如圖8上方表示手指F與觸控輸入裝置10之接觸部位造成觸碰感應群A，手指未與觸控輸入裝置10表面相接觸的部位造成懸浮感應群B。In another embodiment, the controller 100 can also use a third object identification method. The third object identification method is mainly based on the hover sensing information generated when the object contacts the touch input device 10. The type of the object. First, the principle of the floating sensing is described. As shown in FIG. 8, when an object is in contact with the touch input device 10, the touch input device 10 is scanned to obtain a result that the object directly contacts the touch input device 10. Touching the sensing group A, the sensing point in the touch sensing group A has an inductance value greater than a first touch threshold. In addition to the change of the capacitance value of the sensing electrode in the direct contact portion, the object is close to the other part of the touch input device 10, and the capacitance value is changed. The plurality of sensing values are greater than a second sensing value (hover threshold). However, the sensing point smaller than the first sensing value constitutes a floating sensing group B (such as a diagonal marking area). For example, the upper part of FIG. 8 indicates that the contact portion between the finger F and the touch input device 10 causes the touch sensing group A, and the portion where the finger does not contact the surface of the touch input device 10 causes the suspension sensing group B.
因此，該控制器100內設定該第一感應臨界值、第二感應臨界值(第一感應臨界值大於第二感應臨界值)，可以在物件觸碰該觸控輸入裝置時分別定義出一觸碰感應群A及位在該觸碰感應群A外周圍的一懸浮感應群B。該懸浮感應群B具有一與觸碰感應群A相鄰的內邊界和一位於外周緣的外邊界。Therefore, the first sensing threshold and the second sensing threshold are set in the controller 100 (the first sensing threshold is greater than the second sensing threshold), and a touch can be defined when the object touches the touch input device. The touch sensing group A and a floating sensing group B located outside the touch sensing group A. The levitation sensing group B has an inner boundary adjacent to the touch sensing group A and an outer boundary at the outer periphery.
在判斷出物件所引起的懸浮感應群B後，該控制器100進一步判斷懸浮感應群B是否具備一第一特徵。After determining the suspension sensing group B caused by the object, the controller 100 further determines whether the floating sensing group B has a first feature.
請參考圖9所示，如果是一觸控筆S接觸該觸控輸入裝置10的表面時，該觸控筆S僅以其筆尖部位與觸控輸入裝置10的表面接觸，該觸控筆S對應的該懸浮感應群B的範圍(斜線區域)相對較小，或寬度較小。相較於圖8所示，如果是手指F接觸該觸控輸入裝置的表面時，由手指F所對應的懸浮感應群B的範圍相對較大，或寬度較寬。該控制器100判斷懸浮感應群B是否具備第一特徵，即是找出不同接觸物件之對應懸浮感應群B的差異。Referring to FIG. 9 , if a stylus S contacts the surface of the touch input device 10 , the stylus S only contacts the surface of the touch input device 10 with its tip portion, the stylus S The corresponding range of the suspension sensing group B (hatched area) is relatively small, or the width is small. Compared with FIG. 8, if the finger F contacts the surface of the touch input device, the range of the suspension sensing group B corresponding to the finger F is relatively large or wide. The controller 100 determines whether the levitation sensing group B has the first feature, that is, finds the difference of the corresponding levitation sensing group B of different contact objects.
在一實施例中，係以互容式掃描技術獲得觸控輸入裝置10上各感應點的感應值，以取得該懸浮感應群B，判斷該懸浮感應群B是否具備第一特徵的一種可行方式，係計算該內邊界的一感應值與該外邊界的一感應值之間的差值，以及該內邊界與該外邊界之間的距離，若該差值及該距離之間的比值(斜率)大於一第一設定值時，即判斷具備該第一特徵。In an embodiment, the sensing value of each sensing point on the touch input device 10 is obtained by the mutual-capacitance scanning technology to obtain the floating sensing group B, and determining whether the floating sensing group B has the first feature is a feasible manner. Calculating a difference between a sensed value of the inner boundary and an induced value of the outer boundary, and a distance between the inner boundary and the outer boundary, if the difference and the ratio between the distances (slope When it is greater than a first set value, it is determined that the first feature is provided.
因此可以由控制器100針對斜率(比值)設定一第一設定值，並執行該第三物件識別方法，如圖10所示，包括： S101：讀取該觸控輸入裝置10的感應資訊； S102：辨識該感應資訊之一懸浮感應群，其中，該懸浮感應群係對應該物件靠近但未接觸該觸控輸入裝置的部位。在前述實施例中，係將感應值在第一與第二感應臨界值之間的感應點而決定懸浮感應群的範圍； S103：判斷感應資訊中該懸浮感應群B是否具備第一特徵；本實施例中，該懸浮感應群B是否具備第一特徵的判斷方式係根據該懸浮感應群B之內、外邊界上的感應值與距離的相對比值是否大於該第一設定值； S104：若該懸浮感應群具備該第一特徵，判斷該物件為一觸控筆。Therefore, the controller 100 can set a first set value for the slope (ratio) and execute the third object identification method, as shown in FIG. 10, including: S101: reading the sensing information of the touch input device 10; S102 : identifying a suspension sensing group of the sensing information, wherein the floating sensing group corresponds to a portion of the object that is close to but not in contact with the touch input device. In the foregoing embodiment, the sensing point between the first and second sensing thresholds is used to determine the range of the floating sensing group; S103: determining whether the floating sensing group B has the first feature in the sensing information; In the embodiment, whether the suspension sensing group B has the first feature is determined according to whether the relative ratio between the sensing value and the distance on the inner and outer boundaries of the floating sensing group B is greater than the first setting value; S104: The floating sensing group has the first feature and determines that the object is a stylus.
若是手指F接觸時，其懸浮感應群所對應的斜率(比值)小於該第一設定值，故判斷不具備該第一特徵，不會被視為一觸控筆。If the finger F is in contact, the slope (ratio) corresponding to the floating sensing group is smaller than the first setting value, so it is judged that the first feature is not provided and is not regarded as a stylus.
判斷該懸浮感應群B是否具備第一特徵的另一種可行方式，係取得該懸浮感應群B所涵蓋範圍的寬度，並判斷該寬度是否小於一第二設定值，若該寬度小於該第二設定值，即判斷具備該第一特徵而視為是一觸控筆。Another feasible way of determining whether the floating sensing group B has the first feature is to obtain the width of the range covered by the floating sensing group B, and determine whether the width is smaller than a second setting value, if the width is smaller than the second setting. The value, that is, the judgment of having the first feature, is regarded as a stylus.
在判斷懸浮感應群B的寬度時，可利用控制器100進行互容式掃描技術、自容式掃描技術分別獲得觸控輸入裝置10的兩種感應資訊，其中互容式掃描技術係獲得各該X軸感應電極X1~Xm與各該Y軸感應電極Y1~Yn之交會點(相當於前述的感應點)的感應資訊，自容式掃描則獲得各該X軸感應電極X1~Xm、各該Y軸感應電極Y1~Yn對應該物件的感應資訊。利用互容式掃描技術找出觸碰感應群A，並計算該觸碰感應群A第一寬度。利用自容式掃描技術可找出懸浮感應群B的第二寬度，該第一寬度與第二寬度的差值即為該懸浮感應群B的寬度，當該懸浮感應群B的寬度小於一第二設定值時，可判斷該接觸物件為一觸控筆。具體的判斷作法如下：When determining the width of the floating sensing group B, the controller 100 can perform mutual capacitive scanning technology and self-capacitive scanning technology to obtain two kinds of sensing information of the touch input device 10 respectively, wherein the mutual capacitive scanning technology obtains each of the sensing information. The sensing information of the X-axis sensing electrodes X1~Xm and the intersection points of the Y-axis sensing electrodes Y1~Yn (corresponding to the sensing points described above), and the X-axis sensing electrodes X1~Xm are obtained by self-capacitance scanning. The Y-axis sensing electrodes Y1~Yn correspond to the sensing information of the object. The mutual sensing scanning technique is used to find the touch sensing group A, and the first width of the touch sensing group A is calculated. The second width of the suspension sensing group B can be found by using a self-capacitance scanning technique. The difference between the first width and the second width is the width of the suspension sensing group B. When the width of the floating sensing group B is smaller than one When the value is set, it can be judged that the contact object is a stylus. The specific judgment is as follows:
該控制器100對觸控輸入裝置進行互容式掃描，並識別出感應值大於第一感應臨界值的所有感應點，進而由這些感應點求出觸碰感應群A的第一寬度W1，請參閱圖11所示，圖中利用互容式掃描技術獲得的觸碰感應群A在Y軸感應電極Y6上所包括的感應點最多，依據該Y軸感應電極Y6上大於該第一感應臨界值的感應點數量換算出第一寬度W1，作為觸碰感應群A的最大寬度。The controller 100 performs mutual capacitive scanning on the touch input device, and recognizes all the sensing points whose sensing value is greater than the first sensing threshold, and further determines the first width W1 of the touch sensing group A from the sensing points, Referring to FIG. 11 , the touch sensing group A obtained by the mutual capacitive scanning technology includes the most sensing points on the Y-axis sensing electrode Y6, and the sensing electrode Y6 is greater than the first sensing threshold according to the Y-axis. The number of sensing points is converted into the first width W1 as the maximum width of the touch sensing group A.
該控制器100以自容式掃描取得對應所有X、Y軸感應電極上的感應資訊(感應值波形)，並根據感應值大於第二感應臨界值的所有感應電極來決定該懸浮感應群的外邊界，以獲得第二寬度W2；仍請參閱圖11所示，經由自容式掃描技術獲得各X軸、Y軸感應電極的感應值，X軸感應電極X5~X11之感應值均大於第二感應臨界值(如圖11橫軸下方的感應值波形所示，其中虛線表示第二感應臨界值)，以該X軸感應電極X5~X11的數量換算出前述第二寬度W2。該第一寬度W1與第二寬度W2的差值即為該懸浮感應群B的寬度，並用與該第二設定值比較，進而判斷是否為觸控筆。The controller 100 obtains sensing information (induction value waveform) corresponding to all the X and Y axis sensing electrodes by self-capacitance scanning, and determines the outside of the floating sensing group according to all sensing electrodes whose sensing value is greater than the second sensing threshold. The boundary is obtained to obtain the second width W2; still, as shown in FIG. 11, the sensing values of the X-axis and Y-axis sensing electrodes are obtained through the self-capacitance scanning technique, and the sensing values of the X-axis sensing electrodes X5~X11 are larger than the second. The sensing threshold (shown as the waveform of the sensing value below the horizontal axis of FIG. 11 , wherein the broken line indicates the second sensing threshold), and the second width W2 is converted by the number of the X-axis sensing electrodes X5 to X11. The difference between the first width W1 and the second width W2 is the width of the suspension sensing group B, and is compared with the second setting value to determine whether it is a stylus.
判斷該懸浮感應群B是否具備第一特徵的再一種可行方式，係取得該懸浮感應群B所對應的感應點數量，當感應點的數量小於一第三設定值，即判斷具備該第一特徵而視為是一觸控筆。如前面說明所述，觸控筆所對應之懸浮感應群B的範圍相對較小，因此在該懸浮感應群B內的感應點數量亦較少。具體的判斷方式可計算小於該第一感應臨界值(即懸浮感應群B之內邊界)但大於該第二感應臨界值(即懸浮感應群B之外邊界)的感應點數量，若該感應點數量低於一第三設定值，即可將該接觸物件視為觸控筆。A further feasible way of determining whether the floating sensing group B has the first feature is to obtain the number of sensing points corresponding to the floating sensing group B. When the number of sensing points is less than a third set value, determining that the first feature is provided It is considered a stylus. As described above, the range of the floating sensing group B corresponding to the stylus is relatively small, and thus the number of sensing points in the floating sensing group B is also small. The specific judgment manner may calculate the number of sensing points smaller than the first sensing threshold (ie, the inner boundary of the floating sensing group B) but greater than the second sensing threshold (ie, the boundary of the floating sensing group B), if the sensing point If the number is lower than a third set value, the contact object can be regarded as a stylus.
請參考圖12 所示， 係以分辨觸控筆與手指為例來說明本發明物件辨識方法一實際應用的流程圖，包含有： S1201：掃描一觸控輸入裝置； S1202：進行預處理(pre-processing)，以濾除雜訊干擾； S1203：取得一物件接觸該觸控輸入裝置時所產生的感應資訊； S1204：依據該感應資訊判斷該物件是否為一觸控筆，該控制器經由前述之第一、第二或第三物件識別方法，判斷該物件是否為一觸控筆；若是，則執行下一步驟S1205，若否，可回歸步驟S1201而不向電腦主機(host)回報物件的種類，或是由控制器向電腦主機回報物件種類為未知； S1205：確定觸控筆的位置，係基於步驟S1203所獲得的感應資訊來決定該觸控筆的位置； S1206 ：濾波處理(post-filter)，係濾除非觸控筆的其它訊號； S1207：輸出該觸控筆的資訊，係將判斷出之物件種類為觸控筆的資訊及該觸控筆的位置傳送給電腦主機，以供電腦主機進行其它應用。Please refer to FIG. 12 , which is a flow chart illustrating a practical application of the object recognition method of the present invention by using a stylus and a finger as an example, including: S1201: scanning a touch input device; S1202: performing preprocessing (pre -processing) to filter out noise interference; S1203: obtaining sensing information generated when an object contacts the touch input device; S1204: determining whether the object is a stylus according to the sensing information, the controller is The first, second or third object identification method determines whether the object is a stylus; if yes, performs the next step S1205, and if not, returns to step S1201 without returning the object to the host Type, or the controller returns the object type to the computer host as unknown; S1205: determining the position of the stylus, determining the position of the stylus based on the sensing information obtained in step S1203; S1206: filtering processing (post- Filter), filtering other signals except the stylus; S1207: outputting the information of the stylus, the information of the object is determined as the information of the stylus and the position of the stylus is transmitted to The host computer is used by the computer host for other applications.
雖然本發明已利用上述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者在不脫離本發明之精神和範圍之內，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.
10‧‧‧觸控輸入裝置
100‧‧‧控制器
130‧‧‧觸控輸入裝置
132‧‧‧書寫區域
140‧‧‧電容式觸控面板
142‧‧‧感應電極10‧‧‧Touch input device
100‧‧‧ Controller
130‧‧‧Touch input device
132‧‧‧ writing area
140‧‧‧Capacitive touch panel
142‧‧‧Induction electrode
圖1：本發明電容式觸控裝置一實施例的方塊圖。 圖2：本發明觸控輸入裝置偵測不同物件的示意圖。 圖3：本發明控制器之第一物件識別方法一實施例之流程圖。 圖4A：不同物件與本發明觸控輸入裝置接觸之示意圖。 圖4B：第一物件之最大感應值及其鄰近感應值之示意圖。 圖4C：第二物件之最大感應值及其鄰近感應值之示意圖。 圖5A：本發明控制器之第一物件識別方法另一實施例之流程圖。 圖5B：本發明控制器之第一物件識別方法再一實施例之流程圖。 圖6：本發明控制器之第二物件識別方法之流程圖。 圖7A：應用本發明第二物件識別方法在觸控輸入裝置上偵測不同物件所得到之感應電容訊號分佈示意圖。 圖7B：應用本發明第二物件識別方法在觸控輸入裝置上偵測不同物件所得到之感應電容訊號的另一分佈示意圖。 圖8：手指F與觸控輸入裝置之相接觸後之懸浮感應群示意圖。 圖9：觸控筆S與觸控輸入裝置之相接觸後之懸浮感應群示意圖。 圖10：本發明控制器之第二物件識別方法之流程圖。 圖11：本發明計算懸浮感應群B寬度之示意圖。 圖12：本發明應用於分辨觸控筆及手指之辨識方法流程圖。 圖13：既有限制書寫範圍的觸控面板示意圖。 圖14A：既有觸控面板偵測不同物件的示意圖。 圖14B：既有觸控面板產生的感應信號示意圖。1 is a block diagram of an embodiment of a capacitive touch device of the present invention. 2 is a schematic view of the touch input device of the present invention for detecting different objects. 3 is a flow chart of an embodiment of a first object identification method of the controller of the present invention. Figure 4A is a schematic illustration of the contact of different objects with the touch input device of the present invention. Figure 4B is a schematic illustration of the maximum sensed value of the first object and its proximity sensed values. Figure 4C is a schematic illustration of the maximum sensed value of the second object and its proximity sensed values. Figure 5A is a flow chart showing another embodiment of the first object identification method of the controller of the present invention. FIG. 5B is a flow chart of still another embodiment of the first object identification method of the controller of the present invention. Figure 6 is a flow chart showing a second object identification method of the controller of the present invention. FIG. 7A is a schematic diagram showing the distribution of the sensing capacitance signals obtained by detecting different objects on the touch input device by applying the second object recognition method of the present invention. FIG. 7B is another schematic diagram showing the distribution of the sensing capacitance signals obtained by detecting different objects on the touch input device by applying the second object recognition method of the present invention. Figure 8: Schematic diagram of the floating sensing group after the finger F is in contact with the touch input device. FIG. 9 is a schematic diagram of a suspension sensing group after the stylus S is in contact with the touch input device. Figure 10 is a flow chart showing a second object identification method of the controller of the present invention. Figure 11 is a schematic illustration of the calculation of the width of the suspension sensing group B in accordance with the present invention. Figure 12 is a flow chart of the method for identifying the stylus and the finger of the present invention. Figure 13: Schematic diagram of a touch panel with limited writing range. FIG. 14A is a schematic diagram of a touch panel detecting different objects. FIG. 14B is a schematic diagram of an induced signal generated by a touch panel.
Claims (18)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104111705A TWI569196B (en) | 2014-12-05 | 2015-04-10 | Capacitive touch device and object identifying method for the capacitive touch device |
| CN201510180640.XA CN106155438A (en) | 2014-12-05 | 2015-04-16 | Capacitive touch device and object identification method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103142512 | 2014-12-05 | ||
| TW104111705A TWI569196B (en) | 2014-12-05 | 2015-04-10 | Capacitive touch device and object identifying method for the capacitive touch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201621599A true TW201621599A (en) | 2016-06-16 |
| TWI569196B TWI569196B (en) | 2017-02-01 |
Family
ID=56755465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104111705A TWI569196B (en) | 2014-12-05 | 2015-04-10 | Capacitive touch device and object identifying method for the capacitive touch device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106155438A (en) |
| TW (1) | TWI569196B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117991919A (en) * | 2022-10-31 | 2024-05-07 | 广州视源电子科技股份有限公司 | Touch object identification method, touch device and storage medium |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8089470B1 (en) * | 1998-10-20 | 2012-01-03 | Synaptics Incorporated | Finger/stylus touch pad |
| TWI340339B (en) * | 2007-11-08 | 2011-04-11 | Asustek Comp Inc | Touch device and a method of determining touch mode thereof |
| KR101077854B1 (en) * | 2008-05-22 | 2011-10-31 | (주)멜파스 | Method and apparatus for sensing multiple touch-inputs |
| CN101840293B (en) * | 2010-01-21 | 2012-03-21 | 宸鸿科技(厦门)有限公司 | Scanning method for projected capacitive touch panels |
| CN102193692B (en) * | 2010-03-03 | 2014-09-10 | 群康科技(深圳)有限公司 | Surface capacitive touch panel and display device, electronic device as well as driving method thereof |
| JP5606242B2 (en) * | 2010-09-24 | 2014-10-15 | 株式会社ジャパンディスプレイ | Display device |
| TWI436262B (en) * | 2011-02-01 | 2014-05-01 | Edamak Corp | Device and method for detecting multi-proximity and touch behavior of a proximity-touch detection device |
| JP4897983B1 (en) * | 2011-05-18 | 2012-03-14 | パナソニック株式会社 | Touch panel device and indicator distinguishing method |
| TWI454979B (en) * | 2011-05-30 | 2014-10-01 | Elan Microelectronics Corp | Method of distinguishing a plurality of objects on a touch panel and computer readable medium |
| TW201316211A (en) * | 2011-10-13 | 2013-04-16 | Novatek Microelectronics Corp | Gesture detecting method capable of filtering panel mistouch |
| CN103984431B (en) * | 2013-02-08 | 2017-09-29 | 义隆电子股份有限公司 | Touch device and object judgment method applied to touch device |
| TWI502456B (en) * | 2013-03-18 | 2015-10-01 | Focaltech Systems Co Ltd | Mutual capacitance touch screen and touch-sensitive method |
-
2015
- 2015-04-10 TW TW104111705A patent/TWI569196B/en not_active IP Right Cessation
- 2015-04-16 CN CN201510180640.XA patent/CN106155438A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| TWI569196B (en) | 2017-02-01 |
| CN106155438A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI454979B (en) | Method of distinguishing a plurality of objects on a touch panel and computer readable medium | |
| US9274652B2 (en) | Apparatus, method, and medium for sensing movement of fingers using multi-touch sensor array | |
| KR101939103B1 (en) | Methods and apparatus to detect a presence of a conductive object | |
| US8963859B2 (en) | Edge grip detection method of a touch panel and a device using the same | |
| JP5491020B2 (en) | Touch panel | |
| TWI478041B (en) | Method of identifying palm area of a touch panel and a updating method thereof | |
| JP5122560B2 (en) | Fingertip touch recognition for digitizers | |
| US20130050108A1 (en) | Touch Sensor Panel | |
| Hwang et al. | MagPen: magnetically driven pen interactions on and around conventional smartphones | |
| TWI526952B (en) | Touch capacitive device and object identifying method of the capacitive touch device | |
| TWI480787B (en) | Method for improving linearity of touch system coordinates | |
| TW201510804A (en) | Control method for touch panel | |
| US20160266720A1 (en) | Touch method and touch processor | |
| KR101578281B1 (en) | Touch panel and touch screen having the same | |
| US20170255319A1 (en) | Pen location detection | |
| TWI569196B (en) | Capacitive touch device and object identifying method for the capacitive touch device | |
| CN109101127B (en) | Palm touch detection in a touch screen device with a floating ground or thin touch panel | |
| WO2010007731A1 (en) | Indicator and position detection device | |
| US9733775B2 (en) | Information processing device, method of identifying operation of fingertip, and program | |
| JP2017021540A (en) | Detection circuit and touch sensor system | |
| KR101093615B1 (en) | 3D sensing panel | |
| TWI452509B (en) | 3D sensing method and system of touch panel | |
| CN102830824A (en) | Soft pen simulating system and soft pen simulating method | |
| TWI470521B (en) | Self-capacitive touch control apparatus and control method thereof | |
| KR20150114364A (en) | Touch data segmentation method of touch controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |