200933462 九、發明說明： 【發明所屬之技術領域】 本發明係-種應祕光學觸控f幕的制分析方法，其係特別關於一 種利用線性感測器擷取線性影像訊號再加以分析，以獲取位置座標的一種 應用於光學觸控螢幕的感測分析方法。 【先前技術】 如第-圖所示’傳統上的光學觸控螢幕，係_丨對丨對應的訊號阻 斷細，將無法侧咖職座標，賴為螢幕上讀件的位置座標。其 ® 作法係將每-個LED燈52發射的光源直射至相對應的感應器54，因此，_ 個驗登幕的感測區56中需要佈置大量的LED燈52及感測器54。假設其 中之一個LED燈52或感應器54壞掉，即容易出現誤判手指的位置座標， 容錯性較低。 為此，本發明提供一種應用於光學觸控螢幕的感測分析方法，藉此改 善上述缺失。 【發明内容】 〇 本發明之主要目的在提供一種應用於光學觸控螢幕的感測分析方法， 其係利用線性感測器偵測觸碰體的影像，利用影像訊號的線性特性，分析 一維訊號的變化，結合各維度的訊號變化，再分析出觸碰體的位置座標。 本發明之另一目的在提供一種應用於光學觸控螢幕的感測分析方法， 其係利用影像訊號的線性特性，改善先前技術容錯性差的問題。 本發明係提供一種應用於光學觸控螢幕的感測分析方法，其係以導光 棒取代先前技術的大量LED燈，節省成本。 5 200933462 本發明係提供一種應用於光學觸控螢幕的感測分析方法，其係於位移 感測裝置上的感測區周圍，設有一組線性感測器及一組導光棒，每一線性 感測器均與導光棒相互平行對應，線性感測器及導光棒分別連接至影像擷 取裝置及控制器；影像擷取裝置能擷取線性感測器感測到之影像。擷取到 之影像係交由與影像擷取裝置之影像處理裝置處理。影像處理裝置可接收 並分析影像，並交由一運算單元依據時間的變化，判斷該影像之位置坐標 及相對應的變化。本發明利用線性感測器偵測觸碰體的影像，得到線性的 〇 影像訊號，利用影像訊號的線性特性，分析一維訊號的變化，結合各維度 的訊號變化’再由運算單元分析出觸碰體的位置座標。相較於先前技術， 本發明提供之顧於光_控螢幕_測分析方法，升先前技術的容 錯性。另外本發明以導光棒取代先前技術的大量LE：D燈，也可以節省成本。 底下藉由具體實施例s己合所附的圖式詳加說明，當更容易瞭解本發明 之目的、技術内容、特點及其所達成之功效。 【實施方式】 〇 為能詳細說明本發明之實施結構，請參縣二圖^本發明之應用於光 學觸控發幕的躺分機置包括-娜_裝置12,位移制裝置12的中 間係-個矩行的感測區14，在感測區14的周圍設有—組線性感測器及一組 導光棒16。其中，每一線性感測器的對面係由一個導光棒16提供光源由 第一圖可以發現’每-線性感測器均與該導光棒16相互平行對應。 每-導光棒16均連接到-健制器22，控制器22係用來控制導光棒 16的明亮度。另外，線性感測器可分為X轴線性感測器18及¥轴線性感測 器2〇 » X軸線性感測器18連接到一個x軸影像擷取裝置以，γ轴線性感 6 200933462 測器20連接到-個Y轴影像擷取裝置26 , χ袖影像梅取裝置以及γ轴影 像擷取裝置26係位於一影像擷取裝置28中。 控制器22可贈制、改魏賴取裝錢巾^姉像娜裝置％、 Υ轴影像擷取裝置26的曝光時間、啟動Χ轴影像% ^影_ 取裝置26騎行影賴取；或者是停止Χ軸倾輪妓％、γ轴影像操 取裝置26的影像擷取。 -影像處理裝置30 ’内含影像暫存器32、雜訊濾波器％、分析器％、 ❹運算單元5G。雜訊獻器％位於影像暫存器32與分析器36之心影像暫 存1§ 32包括有X轴影像暫存器38、γ轴影德怒少览Λ 轴影像暫存器40 ;雜訊濾波器34包 括有X轴雜訊渡波器42、Y轴雜訊遽油酱μ .八以n /恩及器44 ’分析器36包括有X轴分析器 46、Y轴分析器48。 ’請參照第三圖，當物 依據上述之實施結構，本發明的實施方式如下 體靠近光學觸控螢幕的感測分析裝置時，首先進行步驟犯及轉犯，， X轴線性感測器18及γ軸線性感測器2G會感測到有物體接近；再來進行步 驟S14及步驟S14’200933462 IX. Description of the invention: [Technical field of the invention] The present invention relates to a system for analyzing the optical touch screen of a secret, which is particularly related to a linear sensor using a line sensor to analyze A method of sensing analysis applied to an optical touch screen for obtaining a position coordinate. [Prior Art] As shown in the figure - the traditional optical touch screen, the signal corresponding to the _ 丨 丨 阻 阻 阻 , , , , , , , , , 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The ® method directly directs the light source emitted by each of the LED lamps 52 to the corresponding sensor 54, so that a large number of LED lamps 52 and sensors 54 need to be disposed in the sensing area 56 of the screen. Assuming that one of the LED lamps 52 or the sensor 54 is broken, it is prone to misidentification of the position coordinates of the finger, and the fault tolerance is low. To this end, the present invention provides a sensing analysis method applied to an optical touch screen, thereby improving the above-described deficiency. SUMMARY OF THE INVENTION The main object of the present invention is to provide a sensing analysis method for an optical touch screen, which uses a line sensor to detect an image of a touch object, and uses a linear characteristic of the image signal to analyze one-dimensionality. The change of the signal, combined with the signal changes of each dimension, and then analyze the position coordinates of the touch body. Another object of the present invention is to provide a sensing and analyzing method applied to an optical touch screen, which utilizes the linear characteristics of the image signal to improve the problem of poor fault tolerance of the prior art. The present invention provides a sensing analysis method applied to an optical touch screen, which replaces a large number of LED lamps of the prior art with a light guide bar, thereby saving cost. 5 200933462 The present invention provides a sensing analysis method applied to an optical touch screen, which is disposed around a sensing area on a displacement sensing device, and is provided with a set of line sensor and a set of light guiding rods, each line is sexy The detectors are parallel to the light guiding rods, and the line sensor and the light guiding rod are respectively connected to the image capturing device and the controller; the image capturing device can capture the image sensed by the line sensor. The captured image is processed by an image processing device with an image capture device. The image processing device can receive and analyze the image, and an arithmetic unit determines the position coordinates of the image and the corresponding change according to the change of time. The invention uses a line sensor to detect the image of the touch object, obtains a linear 〇 image signal, and uses the linear characteristic of the image signal to analyze the change of the one-dimensional signal, combined with the signal change of each dimension, and then analyzes the touch by the operation unit. The position coordinates of the body. Compared with the prior art, the present invention provides a method for measuring the fault tolerance of the prior art. In addition, the present invention can save cost by replacing the prior art large number of LE:D lamps with light guide bars. The purpose, technical contents, features, and effects achieved by the present invention will be more readily understood by the detailed description of the appended claims. [Embodiment] In order to explain in detail the implementation structure of the present invention, please refer to the second section of the present invention. The lining machine for the optical touch screen of the present invention includes a __ device 12, an intermediate system of the displacement device 12 - The sensing area 14 of the rectangular line is provided with a line sensor and a set of light guiding rods 16 around the sensing area 14. Wherein, the opposite side of each line of the sensor is provided by a light guiding rod 16 from the first picture. It can be found that the 'per-line sensor' and the light guiding rod 16 are parallel to each other. Each of the light guide bars 16 is coupled to a health controller 22 which is used to control the brightness of the light guide bar 16. In addition, the line sensor can be divided into X-axis sensor 18 and ¥ axis sensor 2〇 X axis sensor 18 is connected to an x-axis image capture device, γ axis sexy 6 200933462 The device 20 is connected to a Y-axis image capturing device 26, and the χ-axis image capturing device 26 and the γ-axis image capturing device 26 are located in an image capturing device 28. The controller 22 can donate, change the exposure time of the Wei Lai to take the money towel, the image display device 26, the exposure time of the axis image capturing device 26, the start axis image, the image capture device 26, or the device The image capture of the Χ-axis tilt 妓% and γ-axis image manipulation device 26 is stopped. The image processing device 30' includes an image buffer 32, a noise filter %, an analyzer %, and a UI operation unit 5G. The noise message % is located in the image buffer 32 and the image of the analyzer 36. The temporary storage 1 § 32 includes an X-axis image register 38, a γ-axis shadow, and an axis image register 40; The filter 34 includes an X-axis noise waver 42 and a Y-axis noise oil sauce. The analyzer 16 includes an X-axis analyzer 46 and a Y-axis analyzer 48. Please refer to the third figure. According to the above-mentioned implementation structure, when the embodiment of the present invention is close to the sensing and analyzing device of the optical touch screen, the first step is to commit the offense, and the X-axis sensor 18 is used. And the γ-axis sensor 2G senses that an object is approaching; and then proceeds to step S14 and step S14'
印一併參’四目’ X姉賴取裝置24擷取影像 0 γ姉__ f 26嫩雜的γ祕像減j轴影 像訊號可儲存於X姉像暫存^ 3S t等待X肺像分㈣46分析；Y抽影 像訊號可儲秘Y __以2巾特γ __⑽分析。 32 彡像細時縣基準來區分雜的不同；換 〇影象暫存器32可以存放不同時間的該影像於影像暫存器中犯。接續進 行步&步驟Sl6 ’請—併參照第五圖，在分析前X轴影像訊號係先 7 200933462 經過X轴雜訊濾波器42濾除X轴影像訊號的雜訊後，再進行步驟S18及步 驟S18 ’睛一併參照第六圓，將X轴影像訊號交由X轴分析器46分析影 像可能的X轴座標’ γ轴分析器犯分㈣像可座標。 接著進行步驟S20 ’請-併參照第七@ ,以運算單元5〇分析X轴座標及 Y轴座標，根據影像的儲存時間的時間差為依據，排除不正確的X轴座標及 Y轴座標，得到真正的影像座標。 本發_提供之顧於光_控#幕_·析方法，_線性感測器 €) 細觸碰體的影像，得到線性的影像訊號，利用影像訊號的線性特性，分 析-維峨的變化，結合各較的訊舰化’再由單元5G分析出觸碰 體的位置座;^。相較於先前技術，本發明提供之應用於光學觸控螢幕的感 測分析方法’能提升先前技術的容錯性。另外本發明以導光棒取代先前技 術的大量LED燈，也可以節省成本。 唯以上所述者，僅為本發明之較佳實施例而已，並非用來限定本發明 實施之範圍。故即凡依本發明申請範圍所述之形狀、構造、特徵及精神所 〇 為之均等變化或修飾，均應包括於本發明之申請專利範圍内。 【圖式簡單說明】 第一圖係先前技術之實施示意圖。 第二圖係本發明之實施架構圖。 第三圖係本發明之實施流程示意圖。 第四圖係本發明之擷取影像之線性訊號時之示意圖。 第五圖係本發明之過濾影像之線性訊號時之示意圓。 第六囷係本發明之分析可能之影像座標之示意囷。 200933462 第七圖係本發明之輸出實際座標之示意圖。 【主要元件符號說明】 12位移感測裝置 14感測區 16導光棒 18 X轴線性感測器 20 Y轴線性感測器 a 22控制器 0 24 X軸影像擷取裝置 26 Y軸影像擷取裝置 28影像擷取裝置 30影像處理裝置 32影像暫存器 34雜訊濾波器 36分析 38 X轴影像暫存器 40 Y轴影像暫存器 42 X轴雜訊濾波器 44 Y軸雜訊濾波器 46 X轴分析器 48 Y轴分析器 52 LED 燈 200933462 54感測器Printed together with 'four eyes' X 姊 取取装置24 capture image 0 γ姊__ f 26 tender γ secret image minus j axis image signal can be stored in X 暂 image temporary ^ 3S t waiting X lung image (4) 46 analysis; Y pumping image signal can be stored in the secret Y __ with 2 towel special γ __ (10) analysis. 32 细 细 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县 县Continue to step & Step S16 'Please - and refer to the fifth picture, before analyzing the X-axis image signal system 7 200933462 After the X-axis noise filter 42 filters out the X-axis image signal noise, then proceed to step S18 And in step S18, the eye is referred to the sixth circle, and the X-axis image signal is sent to the X-axis analyzer 46 to analyze the possible X-axis coordinates of the image. The γ-axis analyzer is divided into four coordinates. Then, in step S20, please refer to the seventh@, and the arithmetic unit 5〇 analyzes the X-axis coordinate and the Y-axis coordinate, and excludes the incorrect X-axis coordinate and the Y-axis coordinate according to the time difference of the image storage time, and obtains the incorrect X-axis coordinate and the Y-axis coordinate. The true image coordinates. The hair _ provided by the Yu _ control _ _ _ analysis method, _ line sensor â€) fine touch the image of the body, get a linear image signal, using the linear characteristics of the image signal, analysis - dimensional changes In combination with the different information of the ship, the position of the touch body is analyzed by the unit 5G; Compared with the prior art, the sensing analysis method applied to the optical touch screen provided by the present invention can improve the fault tolerance of the prior art. In addition, the present invention can save cost by replacing the large number of LED lamps of the prior art with a light guide bar. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the shapes, structures, features, and spirits of the present invention should be included in the scope of the present invention. [Simple description of the drawings] The first figure is a schematic diagram of the implementation of the prior art. The second drawing is a diagram showing the implementation of the present invention. The third figure is a schematic diagram of the implementation flow of the present invention. The fourth figure is a schematic diagram of the linear signal of the captured image of the present invention. The fifth figure is a schematic circle of the linear signal of the filtered image of the present invention. The sixth line is a schematic representation of the possible image coordinates of the analysis of the present invention. 200933462 The seventh figure is a schematic diagram of the actual coordinates of the output of the present invention. [Main component symbol description] 12 displacement sensing device 14 sensing area 16 light guide bar 18 X-axis sensor 20 Y-axis sensor a 22 controller 0 24 X-axis image capturing device 26 Y-axis image 撷Pickup device 28 image capture device 30 image processing device 32 image buffer 34 noise filter 36 analysis 38 X-axis image register 40 Y-axis image register 42 X-axis noise filter 44 Y-axis noise filter 46 X-axis analyzer 48 Y-axis analyzer 52 LED light 200933462 54 sensor