201229832 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種觸摸輸入裝置及觸摸輸入方法，尤其涉 及一種光學觸摸輸入裝置及觸摸輸入方法。 【先前技術·】 [0002] 現在的文字輸入方式主要有鍵盤輸入、語音輸入及觸摸 板輸入等。其中觸摸輸入裝置一般包括一觸摸筆及一觸 摸面板，目前觸摸輸入裝置一般有如下幾種類型：電阻 式、電容式’以及電磁感應式等。在電阻或電容式觸拉 輸入裝置中，該觸摸板内設置多個電容或電阻，該觸摸 筆可以是任何可以改變電容或電阻的物件，例如金屬棒 或塑膠棒。然而，當基板上的某個或某些電容或電阻損 壞時，觸摸輸入便會出現錯誤，從而影響使用壽命，同 時給用戶帶來了不便。電磁感應式觸摸輸入裝置中，觸 摸板下面有一層電路板，能夠在觸摸板上方一定範圍内 產生磁場，在觸摸筆中也有可以產生磁場的電路，這種 技術書寫流暢，但該種方式容易受到外界環境的電磁干 擾，例如當有手機音箱在旁邊時，幾乎不能工作。 【發明内容】 [0003] 有鑒於此，本發明提供一種觸摸輸入裝置以解決上述問 題。 [0004] 本發明中的觸摸輸入裝置包括一觸摸筆及一輸入面板。 該觸摸筆設置有光源用來發出光線。該輸入面板包括一 觸摸輸入區域，第一小孔、第二小孔、第一影像獲取單 元及第二影像獲取單元，其中該第一及第二小孔分別設 100100111 表單編號A0101 第4頁/共19頁 1002000193-0 201229832 置於該輸入面板相鄰的兩侧，該第一及第二影像獲取單 元分別設於該相鄰兩側與小孔相對應的位置，使得該觸 摸筆發出的光線透過該第一及第二小孔分別在該第一及 第二影像獲取單元上形成投影；該輸入面板還對應一χ-γ 坐標系，該第一及第二小孔分別對應該坐標系中的一座 標。該觸摸輸入裝置還包括一處理單元，該處理單元與 該第一及第二影像獲取單元連接，該處理單元根據第一 及第二小孔分別在第一及第二影像獲取單元上投影的位 置以及影像獲取單元與對應小孔之間的距離分別計算出 〇 該觸摸筆與第一小孔連線和X轴方向的夾角《，以及觸摸 筆與第二小孔連線和γ軸方向的夾角/S，並分別根據第一 小孔的座標以及夾角α確定一經過觸摸位置的第一直線 ，以及根據第二小孔的座標以及夾角/3確定一經過觸摸 位置的第二直線，從而確定該第一直線以及第二直線的 交點座標，該交點座標即為該觸摸筆在觸摸輸入區域所 觸摸位置的座標，通過連續偵測該觸摸筆位置座標從而 確定該觸摸筆的位置及移動軌跡。201229832 VI. Description of the Invention: [Technical Field] The present invention relates to a touch input device and a touch input method, and more particularly to an optical touch input device and a touch input method. [Prior Art·] [0002] The current text input methods mainly include keyboard input, voice input, and touch panel input. The touch input device generally includes a touch pen and a touch panel. Currently, the touch input device generally has the following types: a resistive type, a capacitive type, and an electromagnetic induction type. In a resistive or capacitive touch pull input device, the touch panel is provided with a plurality of capacitors or resistors, and the touch pen can be any object that can change the capacitance or resistance, such as a metal rod or a plastic rod. However, when one or some of the capacitors or resistors on the substrate are damaged, the touch input will be in error, which will affect the service life and cause inconvenience to the user. In the electromagnetic inductive touch input device, there is a circuit board under the touchpad, which can generate a magnetic field within a certain range above the touchpad, and a circuit that can generate a magnetic field in the touch pen, which is smooth in writing, but this method is easy to be Electromagnetic interference from the outside world, such as when there is a mobile phone speaker, can hardly work. SUMMARY OF THE INVENTION In view of the above, the present invention provides a touch input device to solve the above problems. The touch input device in the present invention includes a touch pen and an input panel. The stylus is provided with a light source for emitting light. The input panel includes a touch input area, a first aperture, a second aperture, a first image acquisition unit, and a second image acquisition unit, wherein the first and second apertures are respectively 100100111, form number A0101, page 4 / A total of 19 pages 1002000193-0 201229832 are placed on the adjacent sides of the input panel, and the first and second image capturing units are respectively disposed at positions corresponding to the small holes on the adjacent sides, so that the light emitted by the touch pen Projecting a projection on the first and second image acquisition units through the first and second apertures; the input panel further corresponding to a χ-γ coordinate system, wherein the first and second apertures respectively correspond to the coordinate system a standard. The touch input device further includes a processing unit, the processing unit is coupled to the first and second image capturing units, and the processing unit is projected on the first and second image capturing units according to the first and second small holes respectively. And calculating a distance between the touch pen and the first small hole and the X-axis direction, and an angle between the touch pen and the second small hole and the γ-axis direction, respectively, and the distance between the image capturing unit and the corresponding small hole /S, and determining a first straight line passing through the touch position according to the coordinates of the first small hole and the angle α, and determining a second straight line passing through the touch position according to the coordinates of the second small hole and the angle /3, thereby determining the first line The intersection coordinates of a straight line and a second straight line, the intersection coordinates are coordinates of the touched position of the touch pen in the touch input area, and the position and the moving track of the touch pen are determined by continuously detecting the position coordinates of the touch pen.
CJCJ
[0005] 本發明還提供一種觸摸輸入方法，該方法包括如下步驟 :觸摸筆發出的光線透過第一及第二小孔分別在第一及 第二影像獲取單元上投影；確定在第一影像獲取單元上 的投影位置，並根據該投影位置以及第一小孔與第一影 像獲取單元的距離計算出該觸摸筆所在位置與小孔的連 線（下稱第一直線）與水準方向的夾角；根據第一小孔 位置座標以及第一直線與水準方向的夾角確定該第一直 線的座標集合；確定該在第二影像獲取單元上的投影的 100100111 表單編號Α0101 第5頁/共19頁 1002000193-0 201229832 位置，亚根據該投影的位置以及第二小孔與第二影像獲 取單元的距離計算出觸摸筆所在位置與第二小孔之間的 連線（以下稱第二直線）與暨直方向的夾角；根據該第 二小孔座標以及第二直線與豎直方向的夾角確定該第二 直線的座標集合；根據第_直線與第二直線的座標集合 確定一公共座標點，即為觸摸筆所觸控位置的座標；連 續偵測該觸摸筆的位置座標，從而確定該觸摸筆的移動 軌跡。 [0006] [0007] 本發明中的觸摸輸入裝置結構簡單，方便使用，且不受 電磁干擾的影響。 【實施方式】 請參閱圖1，該觸摸輸入裝置100包括一觸摸筆1〇及一輸 入面板2〇。該觸摸華；1〇上設置有一光源m ,該光源 向四周發射光線。在本實施方式中，該光源ιοί為一紅外 光源，設置於該觸摸筆10筆尖處。在其他實施方式中， 該光源101為一鐳射源。該輸入面板2〇包括一觸摸輸入區 域201、第一小孔202、第二小孔203、第一影像獲取單 元204以及第二影像獲取單元205。在本實施方式中，該 輸入面板20為一具有凸出邊框的矩形結構，該凸出邊框 為中空結構’圍繞該觸摸輸入區域2〇1設置。該第一小孔 2 0 2及第二小孔2 0 3分別位於該輸入面板2 0兩相鄰侧壁的 凸出邊框上且孔徑方向與其所在邊框垂直，即朝向該觸 摸輸入區域201。 在本實施方式中，該第一小孔202位於該輸入面板20的水 準邊上，該第二小孔203位於該輸入面板20的豎直邊上。 100100111 表單編號A0101 第6頁/共19頁 1002000193-0 [0008] 201229832 該第一影像獲取單元204設置於該輸入面板2G的凸出邊框 内部與第一小孔2 0 2對應的位置，且與該笛 Λ弟一小孔202間 隔一第—預定距離設置，該第二影像獲取單元2〇5設置於 該凸出邊框中與該第二小孔203對應的位署 夏，且與該第二 小孔203間隔-第二預定距離，從而該觸模筆_於該觸 摸輸入區域2()1中時，該觸摸筆1()發出的胃 第一小孔202及該第二小孔203分別在第—！你也 衫像獲取單元 204及第二影像獲取單元205上投影。其中，兮结 β第一預定 ❹ 距離與該第二預定距離可相同也可不同。當該觸摸筆ι〇 觸摸不同的位置時，該觸撰筆10發出的光線通過小孔後 在對應影像獲取單元上投影的位置不同0該觸摸輸入裝 置100還包括一處理單元30，該處理單元30與該第一影像 獲取單元204及第二影像獲取單元205電連接。 [0009] Ο 在本實施方式中’该觸摸輸入區域201的可觸撰點盘一坐 &系例如X - Υ坐標系中的座標—~映射。該第一小孔2 〇 2 、第二小孔203同樣對應該.X-Y坐標系中的一座標。該處 理單元30根據光線透過第一小孔202及第二小孔2〇3分別 在第一影像獲取單元204及第二影像獲取單元205上投影 的位置以及影像獲取單元與對應小孔之間的距離分別計 算出該觸摸筆10與第一小孔202連線和X軸方向的夾角α ’以及觸摸筆10與第二小孔203連線和Υ軸方向的夾角冷 ’並分別根據第一小孔2 0 2的座標以及夾角α破定一經過 第一小孔202以及觸摸位置的第一直線L1，以及根據第二 小孔203的座標以及夾角；5確定一經過第二小孔203以及 觸摸位置的第二直線L2 ’從而確定該第一直線L1以及第 100100111 表單鵠號Α0101 第7頁/共19頁 1002000193-0 201229832 二直線L2的交點座標，該交點座標即為該觸摸筆10在觸 摸輸入區域201所觸摸位置的座標，從而該處理單元30確 定出該觸摸筆1 0的位置及移動轨跡。 [0010] 在本實施方式中，該觸摸輸入裝置100還包括一顯示面板 (圖中未示），該顯示面板位於該輸入面板20的上方， 該處理單元3 0還控制將該觸摸筆1 0的移動執跡顯示在顯 示面板上。在其他實施方式中，該輸入面板20為透明面 板，該顯示面板位於該輸入面板20的下方。 [0011] 請參閱圖2，為本實施方式中該觸摸輸入面板20的坐標示 意圖。在本實施方式中，設以該觸摸輸入區域201的中心 為座標原點建立X-Y坐標系，其中第一小孔202及第一影 像獲取單元204位於X轴上，座標分別為（0，a)、（0，c) ，該第二小孔203及該第二影像獲取單元205位於Y軸上， 座標分別為（b，0)及（d，0)，從而，該第一影像獲取單 元204與第一小孔202的距離為c-a，該第二影像獲取單 元205與第二小孔203的距離為b-d。在本實施方式中， 該第一影像獲取單元204及第二影像獲取單元205均由多 個呈直線排布的光感應器組成，當觸摸筆10發出的光線 通過小孔投影到一光感應器時，該光感應器產生一感應 信號。該第一影像獲取單元204中的光感應器平行於X軸 ，該第二影像獲取單元205中的光感應器平行於Y軸，該 影像獲取單元204 ' 205中的每一光感應器均對應一座標 值。其中第一影像獲取單元204的位於Y軸右方的光感應 器的座標為正值，位於Y軸左方的光感應器的座標為負值 。該第二影像獲取單元205位於X軸上方的光感應器的座 100100111 表單編號A0101 第8頁/共19頁 1002000193-0 201229832 [0012] ❹ ❹ 標為正值，位於X轴下方的光感應器的座標為負值。 在本實施方式中，該觸摸筆10位置座標的計算過程如下 :設定該觸摸筆10的位置座標為（x，y)。當觸摸筆10 發出的光線穿過該第一小孔202而投影到該第一影像獲取 單元204的一光感應器時，該光感應器產生一感應信號， 處理單元30接收該感應信號後確定該光感應器的座標， 該座標即為該光線投影在該第一影像獲取單元204上的位 置，設為（z，c)，並根據該橫坐標z以及第一影像獲取 單元204與第一小孔202的距離c-a求出夾角α的值。具 體的，由於tana = (c-a)'/z，從而可求出α，其中c-a 為一絕對值，當z為負值時，tana為負，當z為正值時， tana為正。同理可求得夾角的角度值。從而該處理單 元30根據該第一小孔202的座標以及該該第一直線L1與水 準方向的夾角a可確定該第一直線L1的座標集合為滿足 方程y = tana(x+a)的所有座標。同理，該處理單元30根 據第二小孔203的座標以及該第二直線L2與豎直方向的夾 角冷確定該第二直線L2的座標集合為滿足方程x=tan；S (y + b)的所有座標。該處理單元30通過對比該第一直線 L1與第二直線L2的座標集合確定該公共座標點，即得出 該觸摸筆10所觸控位置的座標。該處理單元30通過連續 偵測該觸摸筆10所觸控位置的座標，得出該觸摸筆10的 位移軌跡。 [0013] [0014] 請參閱圖3，該觸摸輸入裝置100中的觸摸輸入方法，包 括如下步驟： 步驟S301 :該具有光源的觸摸筆10在輸入面板20上進行 100100111 表單編號A0101 第9頁/共19頁 1002000193-0 201229832 點觸時產生的光線透過第一小孔202以及第二小孔203分 別在第一影像獲取單元204以及第二影像獲取單元205上 產生投影。 [0015] 步驟S302 :確定該在第一影像獲取單元204上的投影點的 位置，並根據該投影點的位置以及第一小孔202與第一影 像獲取單元204的距離計算出觸摸筆10所在位置與第一小 孔202之間的連線（以下稱第一直線L1)與水準方向的夾 角。 [0016] 步驟S303 :根據該第一小孔202座標以及第一直線L1與 水準方向的夾角確定該第一直線L1的座標集合。 [0017] 步驟S304 :確定該在第二影像獲取單元205上的投影點的 位置，並根據該投影點的位置以及第二小孔203與第二影 像獲取單元205的距離計算出觸摸筆10所在位置與第二小 孔203之間的連線（以下稱第二直線L2)與豎直方向的夾 角。 [0018] 步驟S305 :根據該第二小孔203座標以及第二直線L2與 豎直方向的夾角確定該第二直線L2的座標集合； [0019] 步驟S30 6 :根據第一直線L1與第二直線L2的座標集合確 定一公共座標點，即為觸摸筆10所觸控位置的座標； [0020] 步驟S307 :連續偵測該觸摸筆10的位置座標，從而確定 該觸摸筆10的移動軌跡。 【圖式簡單說明】 [0021] 圖1為本發明一實施方式中觸摸輸入裝置示意圖。 100100111 表單編號A0101 第10頁/共19頁 1002000193-0 201229832 [0022] 圖2為本發明一實施方式中觸摸輸入裝置計算原理說明示 意圖。 [0023] 圖3為本發明一實施方式中觸摸輸入方法流程圖。 【主要元件符號說明】 [0024] 觸摸輸入裝置： 100 [0025] 觸摸筆：10 [0026] 光源：101 [0027] 輸入面板：20 [0028] 觸摸輸入區域： 201 [0029] 第一小孔：202 [0030] 第二小孔：203 [0031] 第一影像獲取單元： 204 [0032] 第二影像獲取單元： 205 [0033] 處理單元：30 [0034] 第一直線：L1 [0035] 第二直線：L2 ❸ 〇 100100111 表單編號A0101 第11頁/共19頁 1002000193-0The invention further provides a touch input method, the method comprising the steps of: the light emitted by the touch pen is projected on the first and second image acquisition units through the first and second small holes respectively; determining the first image acquisition a projection position on the unit, and calculating an angle between the position of the touch pen and the small hole (hereinafter referred to as the first straight line) and the level direction according to the projection position and the distance between the first small hole and the first image capturing unit; The first small hole position coordinate and the angle between the first straight line and the horizontal direction determine the coordinate set of the first straight line; the 100100111 form number of the projection on the second image acquiring unit is determined. 1010101 5th page/19 pages 1002000193-0 201229832 position According to the position of the projection and the distance between the second small hole and the second image capturing unit, the angle between the connection between the position of the touch pen and the second small hole (hereinafter referred to as the second straight line) and the straight direction is calculated; Determining a coordinate set of the second straight line according to the second small hole coordinate and an angle between the second straight line and the vertical direction; according to the _th line and the second Determining a set of coordinates of line common coordinate points, the coordinate position of a touch is the touch pen; continuously detecting the position coordinates of the touch pen, thereby determining the movement locus of the touch pen. [0006] The touch input device of the present invention has a simple structure, is convenient to use, and is not affected by electromagnetic interference. [Embodiment] Referring to FIG. 1, the touch input device 100 includes a touch pen 1A and an input panel 2A. The touch is provided with a light source m that emits light to the surroundings. In this embodiment, the light source ιοί is an infrared light source disposed at the tip of the touch pen 10. In other embodiments, the light source 101 is a laser source. The input panel 2 includes a touch input area 201, a first small hole 202, a second small hole 203, a first image capturing unit 204, and a second image capturing unit 205. In the present embodiment, the input panel 20 is a rectangular structure having a convex frame, and the convex frame is a hollow structure disposed around the touch input area 2〇1. The first small hole 2 0 2 and the second small hole 2 0 3 are respectively located on the convex frame of the two adjacent side walls of the input panel 20 and the aperture direction is perpendicular to the frame in which the aperture is located, that is, toward the touch input area 201. In the present embodiment, the first small hole 202 is located on the horizontal side of the input panel 20, and the second small hole 203 is located on the vertical side of the input panel 20. 100100111 Form No. A0101 Page 6 / Total 19 Page 1002000193-0 [0008] 201229832 The first image acquisition unit 204 is disposed at a position corresponding to the first small hole 202 in the convex frame of the input panel 2G, and The second image capturing unit 2〇5 is disposed in the convex frame and corresponds to the second small hole 203, and the second image is disposed at a predetermined distance. The small holes 203 are spaced apart by a second predetermined distance, so that when the touch pen is in the touch input area 2()1, the first small hole 202 and the second small hole 203 of the stomach are respectively emitted by the touch pen 1() In the first -! You also project on the image acquisition unit 204 and the second image acquisition unit 205. The first predetermined ❹ distance of the 兮β may be the same as or different from the second predetermined distance. When the touch pen ι 〇 touches a different position, the light emitted by the stylus pen 10 passes through the small hole and the position projected on the corresponding image acquiring unit is different. The touch input device 100 further includes a processing unit 30, and the processing unit 30 is electrically connected to the first image acquisition unit 204 and the second image acquisition unit 205. [0009] In the present embodiment, the touchable dial of the touch input area 201 is a coordinate-~ mapping in the X-Υ coordinate system, for example. The first aperture 2 〇 2 and the second aperture 203 also correspond to a landmark in the .X-Y coordinate system. The processing unit 30 is configured to scan the position of the light passing through the first small hole 202 and the second small hole 2〇3 on the first image capturing unit 204 and the second image capturing unit 205, and between the image capturing unit and the corresponding small hole. The distance between the line connecting the line of the touch pen 10 and the first small hole 202 and the direction of the X-axis and the angle between the line connecting the touch pen 10 and the second small hole 203 and the direction of the x-axis are respectively calculated and determined according to the first small The coordinate of the hole 2 0 2 and the angle α are broken by a first straight line L1 passing through the first small hole 202 and the touch position, and according to the coordinates and the angle of the second small hole 203; 5 determining a passing through the second small hole 203 and the touch position The second straight line L2 ′ thus determines the intersection line coordinates of the first straight line L1 and the 100100111 form 鹄 Α 0101 7th page 19th page 1002000193-0 201229832 two lines L2, the intersection point coordinates of the touch pen 10 in the touch input area The coordinates of the touched position of 201, so that the processing unit 30 determines the position and movement trajectory of the touch pen 10. [0010] In the embodiment, the touch input device 100 further includes a display panel (not shown), the display panel is located above the input panel 20, and the processing unit 30 also controls the touch pen 10 The mobile track is displayed on the display panel. In other embodiments, the input panel 20 is a transparent panel that is located below the input panel 20. [0011] Please refer to FIG. 2, which is a schematic diagram of the touch input panel 20 in the present embodiment. In this embodiment, the center of the touch input area 201 is used as the coordinate origin to establish an XY coordinate system, wherein the first small hole 202 and the first image capturing unit 204 are located on the X axis, and the coordinates are respectively (0, a). (0, c), the second small hole 203 and the second image capturing unit 205 are located on the Y axis, and the coordinates are (b, 0) and (d, 0), respectively, so that the first image acquiring unit 204 The distance from the first small hole 202 is ca, and the distance between the second image capturing unit 205 and the second small hole 203 is bd. In this embodiment, the first image capturing unit 204 and the second image capturing unit 205 are each composed of a plurality of light sensors arranged in a straight line, and the light emitted by the touch pen 10 is projected through a small hole to a light sensor. The light sensor generates an inductive signal. The light sensor in the first image capturing unit 204 is parallel to the X axis, and the light sensor in the second image capturing unit 205 is parallel to the Y axis. Each of the image capturing units 204 205 corresponds to the light sensor. A standard value. The coordinate of the light sensor located at the right of the Y-axis of the first image capturing unit 204 is a positive value, and the coordinate of the light sensor located to the left of the Y-axis is a negative value. The second image acquisition unit 205 is located at the seat of the light sensor 100100111 above the X-axis. Form No. A0101 Page 8/19 pages 1002000193-0 201229832 [0012] ❹ ❹ A positive value, light sensor located below the X-axis The coordinates are negative. In the present embodiment, the calculation process of the position coordinates of the touch pen 10 is as follows: The position coordinate of the touch pen 10 is set to (x, y). When the light emitted by the touch pen 10 passes through the first small hole 202 and is projected to a light sensor of the first image capturing unit 204, the light sensor generates a sensing signal, and the processing unit 30 receives the sensing signal and determines a coordinate of the light sensor, where the light is projected on the first image capturing unit 204, set to (z, c), and according to the abscissa z and the first image acquiring unit 204 and the first The distance ca of the small hole 202 finds the value of the angle α. Specifically, since tana = (c-a)'/z, α can be found, where c-a is an absolute value, when z is negative, tana is negative, and when z is positive, tana is positive. In the same way, the angle value of the angle can be obtained. Therefore, the processing unit 30 determines that the coordinate set of the first straight line L1 is all coordinates satisfying the equation y = tana(x+a) according to the coordinates of the first small hole 202 and the angle a between the first straight line L1 and the horizontal direction. Similarly, the processing unit 30 determines that the coordinate set of the second straight line L2 satisfies the equation x=tan; S (y + b) according to the coordinates of the second small hole 203 and the angle between the second straight line L2 and the vertical direction. All coordinates. The processing unit 30 determines the common coordinate point by comparing the coordinate sets of the first straight line L1 and the second straight line L2, that is, the coordinates of the touch position of the touch pen 10 are obtained. The processing unit 30 obtains the displacement trajectory of the touch pen 10 by continuously detecting the coordinates of the touch position of the touch pen 10. [0014] Referring to FIG. 3, the touch input method in the touch input device 100 includes the following steps: Step S301: The touch pen 10 with a light source performs 100100111 on the input panel 20 Form No. A0101 Page 9 / A total of 19 pages 1002000193-0 201229832 The light generated by the touch generates a projection on the first image capturing unit 204 and the second image capturing unit 205 through the first small hole 202 and the second small hole 203, respectively. [0015] Step S302: determining the position of the projection point on the first image acquisition unit 204, and calculating the location of the touch pen 10 according to the position of the projection point and the distance between the first aperture 202 and the first image acquisition unit 204. The angle between the position and the first small hole 202 (hereinafter referred to as the first straight line L1) and the horizontal direction. [0016] Step S303: determining a coordinate set of the first straight line L1 according to the coordinate of the first small hole 202 and the angle between the first straight line L1 and the horizontal direction. [0017] Step S304: determining the position of the projection point on the second image acquisition unit 205, and calculating the location of the touch pen 10 according to the position of the projection point and the distance between the second aperture 203 and the second image acquisition unit 205. The angle between the position and the second small hole 203 (hereinafter referred to as the second straight line L2) and the vertical direction. [0018] Step S305: determining a coordinate set of the second straight line L2 according to the coordinate of the second small hole 203 and the angle between the second straight line L2 and the vertical direction; [0019] Step S30 6: according to the first straight line L1 and the second straight line The coordinate set of L2 determines a common coordinate point, that is, the coordinate of the touch position of the touch pen 10; [0020] Step S307: continuously detecting the position coordinate of the touch pen 10, thereby determining the movement track of the touch pen 10. BRIEF DESCRIPTION OF THE DRAWINGS [0021] FIG. 1 is a schematic diagram of a touch input device according to an embodiment of the present invention. 100100111 Form No. A0101 Page 10 of 19 1002000193-0 201229832 [0022] FIG. 2 is a schematic illustration of a calculation principle of a touch input device according to an embodiment of the present invention. 3 is a flow chart of a touch input method according to an embodiment of the present invention. [Main component symbol description] [0024] Touch input device: 100 [0025] Touch pen: 10 [0026] Light source: 101 [0027] Input panel: 20 [0028] Touch input area: 201 [0029] First small hole: 202 [0030] second aperture: 203 [0031] first image acquisition unit: 204 [0032] second image acquisition unit: 205 [0033] processing unit: 30 [0034] first straight line: L1 [0035] second straight line :L2 ❸ 〇100100111 Form No. A0101 Page 11 of 19 Page 1002000193-0