200841227 九、發明說明： 【發明所屬之技術領域】 本發明有關於一種光學觸控裝置，其以光學方式偵測 輸入裝置之移動而產生訊號。本發明也有關於控制該裝置 的方法。 【先前技術】 觸控裝置已為現今常見之電子元件，可見於例如筆記 型電腦之觸控板（touchpad)、或如自動櫃員機、個人數位 助理機、電子辭典等之觸控式螢幕（t〇uch screen or touch panel)等等。目前各種觸控裝置是以電阻式或電容式的方 式來感測觸控的位置。電阻式的驅動原理是利用電壓降的 方式來找座標軸，當電阻式觸控螢幕被觸到的時候，由於 迴路被導通，而會產生電壓降，且在面板的水平和垂直方 向上，隨位置的不同，電壓降也不同，因此控制器可根據 電壓降來計算出座標。電容式的架構則是以IT〇 (Indium Tm Oxide)玻璃為主體，其驅動原理是在IT〇玻璃的四角 放電，使表面形成一個均勻的電場，當可以導電的物體， 例如手私，使微量的電流導通流失，控制器便計算出電流 流失的比例，並進而算出X軸和γ軸座標。 【發明内容】 本發明之目的在提供一種嶄新的光學觸控裝置，其驅 動原理既非電阻式亦非電容式，而是以光學方式偵測輸入 裝置之移動。因此，輸入裝置既不需要對螢幕或觸控板施 200841227 壓’也不需要具有導電性。而且本發明之觸控裝置在製作 上不需要使用複_元件鄕程，成本雜習知電阻式或 電容式觸控裝置來得低。200841227 IX. Description of the Invention: [Technical Field] The present invention relates to an optical touch device that optically detects the movement of an input device to generate a signal. The invention also relates to a method of controlling the device. [Prior Art] Touch devices have become common electronic components today, and can be found, for example, in touchpads of notebook computers, or touch screens such as automatic teller machines, personal digital assistants, electronic dictionaries, etc. Uch screen or touch panel) and so on. At present, various touch devices sense the position of the touch in a resistive or capacitive manner. The resistive drive principle is to use the voltage drop method to find the coordinate axis. When the resistive touch screen is touched, the voltage drop occurs due to the loop being turned on, and in the horizontal and vertical directions of the panel, with the position The voltage drop is different, so the controller can calculate the coordinates based on the voltage drop. The capacitive structure is based on Indium Tm Oxide glass. The driving principle is to discharge at the four corners of the IT glass, so that the surface forms a uniform electric field. When the conductive object, such as the hand, makes a trace The current conduction is lost, and the controller calculates the ratio of current loss and further calculates the X-axis and γ-axis coordinates. SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel optical touch device that is driven in a non-resistive or non-capacitive manner, but optically detects the movement of the input device. Therefore, the input device does not need to apply a voltage to the screen or touch panel and does not need to be electrically conductive. Moreover, the touch device of the present invention does not require the use of a complex-component process for fabrication, and the cost is complicated by a resistive or capacitive touch device.
本發明之第二目的在提供一種觸控裝置之控制方法。 為達上述之目的，在本發明的其中-個實施例中’提 ?了二種光學觸控裝置，包含：—縣模組，含有一光學 資訊萃取位置，鱗光模組可將光導引至該絲資訊萃取 位置上’並減自該絲資鱗取輸人歧射的光而 產生光學資訊；以及-影像制敎，其感猶導光模組 所產生之絲纽’並根獅絲資絲產生電子訊號。 上述實施例中，可設置一個内部紅外線光源。又，在 導光模組與影佩測池之P柯設置—組透鏡。此外，可 ^設置-個反雜制電路’以根據導絲_產生之光學 貧訊’而反驗_部絲之亮度。影像_模組所產生A second object of the present invention is to provide a method of controlling a touch device. In order to achieve the above, in the embodiment of the present invention, two optical touch devices are provided, including: a county module, an optical information extraction position, and a light guide module for guiding light. To the silk information extraction position 'and reduce the light from the silk scale to absorb the light generated by the person to produce optical information; and - the image system, the sensation of the light guide module generated by the silk screen Zisi produces electronic signals. In the above embodiment, an internal infrared light source may be provided. In addition, in the light guide module and the shadow mask, the P-set-group lens. In addition, an anti-missing circuit can be provided to counter-measure the brightness of the _ filament according to the optical poorness produced by the guide wire. Image_module generated
號’可透過-處理電路來處理，而產生訊號控制 純，或控制其他電路之動作，或產生三維資訊。 此外，根據本發明的另一個實施例，也提供一種 光學觸控裝置之控财法，包含：提供—導賴組， 有-光學資鮮祕置；令該縣娜自該光料訊 萃取位置輸人或反射的光而產生光學資訊；以及感測 光模組所產生之光學資訊’並根據該絲資訊來產生電子 訊號 之目:：==二容_她 6 200841227 【實施方式】 本發明中_式補示意，主要t在表示 ，而非限定元件之形狀或其間之比例關係 松il生I之、學觸控裝置可應用於觸控板、觸控螢幕、或复 他^制崎。事實上本㈣之絲裝置要 觸錄=’但因本發明目的之—在於對現有觸控裝置苡 另=解決方案，因此仍沿用「觸控裝置」之用語。八 凊參閱第1圖’本發明之光學觸控裝置1〇基本上包括 光源12、導光模組M、以及影像感測模組16，盆外 ，有^入裝置20。輸入裝置2〇可以是任何物件，、修手 ❿ 餘物、料，科錢光學觸控裝置10的專屬零件； 裝置2G不必具辑雜。辆12 _暇將光投射 至¥光模組Μ内，其位置移須如騎示，而可林他位 2例如觸控表面141的正上方或侧上方。如果自然光源 夠強’則光源亦可省略；但一般而言宜提供光源12， 且以紅外線光源為佳’財親亮度敎。導光模組14 的作用疋將輸入裝置2〇的移動狀態傳達給影像感測模組 ，導光模組本身已為實用之技術，可使用塑膠射出成型、 實墨技術、或壓印技術絲作，其製作方法非本案重點， 因此=予詳細說明。例如稜鏡，即為導光模組14之其中一 雜簡單形式。在較複雜的形式中，導光模組14内包括導 光板（未4)’可概錢12發㈣雜絲觀成折 射f生的平面光源，均勻投射至觸控表面Ml，並且將從觸 7 200841227The number ' can be processed through the processing circuit, and the signal control is pure, or the actions of other circuits are controlled, or three-dimensional information is generated. In addition, according to another embodiment of the present invention, there is also provided a method for controlling the control of an optical touch device, comprising: providing a navigation group, having an optical asset secret; and causing the county to extract the position from the light material. Inputting or reflecting light to generate optical information; and sensing the optical information generated by the optical module' and generating an electronic signal according to the information of the wire::== 二容_她6 200841227 [Embodiment] In the present invention _ type complement, the main t is in the representation, not the shape of the component or the proportional relationship between them. The learning touch device can be applied to the touchpad, the touch screen, or the complex. In fact, the wire device of this (4) is to be touched = 'but for the purpose of the present invention - it is for the existing touch device 苡 another solution, so the term "touch device" is still used. VIII. Referring to FIG. 1 , the optical touch device 1 of the present invention basically includes a light source 12, a light guiding module M, and an image sensing module 16, and a device 20 is provided outside the basin. The input device 2 can be any object, the hand, the remaining material, the material, and the exclusive parts of the optical touch device 10; the device 2G does not have to be complicated. The vehicle 12 is projected into the optical module, and its position is shifted as shown in the figure, and the position 2 can be directly above or above the touch surface 141. If the natural light source is strong enough, the light source can also be omitted; however, it is generally preferable to provide the light source 12, and the infrared light source is better. The function of the light guiding module 14 transmits the moving state of the input device 2 to the image sensing module. The light guiding module itself is a practical technology, and can be used for plastic injection molding, solid ink technology, or embossing technology. The production method is not the focus of this case, so = detailed explanation. For example, 稜鏡 is one of the simple forms of the light guiding module 14. In a more complicated form, the light guide module 14 includes a light guide plate (not 4)', which can be used to generate a circular light source, which is uniformly projected onto the touch surface M1, and will be touched. 7 200841227
控表面141所接收的輸入或反射光線傳達給影像感測模組 16，使影像感測模組16得以擷取有關輸入裝置2〇移動的 光學資訊。較佳而言，輸入裝置2〇的前端可加設反光材質 21，如此可使影像感測模組16所擷取的光學資訊更為正 確。輸入裝置20不需要向觸控表面141施壓，因此並不絕 對需要直接接觸觸控表面141。與沿用「觸控裝置」用語 的原因相似，本發明中使用「觸控表面」一詞，並非意指 輸入裝置20必須和觸控表面141接觸，而是表示其功能類 似於現行技術之觸控板、觸控螢幕等。 影像感測模組16擷取光學資訊後，可將該資訊轉換成 電子§fl號’傳送給處理電路30。視光學觸控裝置1〇的應 用場合而定，處理電路30的輸出訊號可作不同的用途，例 如，當光學觸控裝置10為筆記型電腦上之觸控板時，處理 電路30的輸出訊號可用以控制顯示螢幕4〇上的游桿41 移動；當光學觸控裝置10為自動櫃員機上之觸控式榮幕 時’可用以控制其他裝置（未示出）進行動作，例如轉帳 等。 景維感測模組16所擷取的光料訊為二較訊;如僅 需計算二維平面上的移動，例如單純控制游標Μ移動時， 已很充分。根雜人裝置2G的三維轉來提供1 能，例如在螢幕選單上進行選擇，則可挪像感測模組Μ 愤置兩個以上的感測器，並根據所接收的影像、 器間的相對距離、感測器的焦距等，計算出輪 ^ 的三維移動。詳言之，如第2 _示，假設左右兩感測器 8 200841227 的中心位置距離為Γ’制㈣聚焦距離為/，影像中包含 f物件’且該物件在左方感測騎得二維影像中的χ座標 是X/，在右方感·所得二維影像中的x座標是 以感測器的巾馈置為原點，則x”在右方朗財心位置 的左方’故為負值），而該物件距離感測器的距離為Z，則 根據相似三角形定理， 、 χ///Ί/ζ，且 _Xr//=：nz 故可求出該物件的三維資訊： Χ={Τ X Xi)/(xrxr) Y (T x yi)/{xrxr)(其中少/在圖中未示出） Z=/x [T/(xrxr)] 藉此方式，卽可產生物件的三維資訊。 當然，以上計算方式僅為可行的作法之一，除以上所 述方式外，亦可_其他方式來計算三維#訊。如何計算 二維貧訊，並縣案重點，故不抒述所有的可能作法愈 細^重點是，本發雜習知觸控裝置紐供了另一個維 度的資訊，使運用性更為廣泛。 請參閱第3圖，此為本發明的另—個實施例。本實施 ，之光學觸控裝置Π)除包括光源12、導光模組14、影像 感測拉組16之外’另包括透鏡模幻5，以及反饋控制電 路P。透鏡模組is中可包含-個或多個透鏡151_152，以 協助影像_模組16更精確地捕捉影像。反饋控制電路 17的作用在_整光源12的亮度。當影像感測模組16感 測到的光線太弱，峨_效果不鱗，反雜制電路17 200841227 即了根據衫像感测板組16的狀況，反饋調整光源I)的古 度。 、冗 在上述第1圖和第3圖中，係將輸入裝置2〇繪成遠】 141 ^ 20 觸控表面141的面積。第4圖示出本發明的另一個實施例、， 如圖所示’本實施例中之輪入裝置20 (例如為手指），其 面積可遮蔽觸控表面141之大部分或全部面積。藉由偵測 輸入裝置20表面圖案的移動（例如指紋的移動變化），便 可產生-維或二維資訊’以供例如控制游標、選擇選單中 之選項等。由於輸人裝f2G可遮蔽觸控表自⑷之大部分 面積’因此在本實施例巾’不絕對必要設置觸控表面⑷刀， 亦即該處可以僅為機殼U上的—_孔。不論是否設置觸 控表面141或僅提供開孔’皆可在該位置萃取光學資訊。 在某，情況下，提賴控表面141之侧主要為防止外界 塵埃落入機體内部造成污染；便利辨識輸入裝置2〇之移 動’反為次要。在另外某些軌下，觸絲面141本身是 -個可以按_按蚁-部份，以提供其他控制功能；此 時作為按鈕的魏為主要，_觸輸人裝£ 2Q之 反為次要。 在第4圖所示實施例中，為了進一步縮小整體光學觸 控裝置的贿，可將導賴組14和透鏡模組15整合成— 體。當然，視裝置本身的設計岭，亦可將其分開 設置透鏡模組15。 第4圖之光學觸控裝置例如可應用於較小型的電子裝 10 200841227 f人數位助理、攜帶式音樂播_等中;第 =出)，觸控表面⑷或_例== 顯不螢幕的下方、按鈕的上方。 職The input or reflected light received by the control surface 141 is transmitted to the image sensing module 16 to enable the image sensing module 16 to capture optical information about the movement of the input device 2 . Preferably, the reflective material 21 can be added to the front end of the input device 2, so that the optical information captured by the image sensing module 16 can be more accurate. The input device 20 does not need to apply pressure to the touch surface 141, and thus does not absolutely require direct contact with the touch surface 141. Similar to the reason for using the term "touch device", the term "touch surface" is used in the present invention, and does not mean that the input device 20 must be in contact with the touch surface 141, but rather that the function is similar to the touch of the prior art. Board, touch screen, etc. After the image sensing module 16 captures the optical information, the information can be converted into an electronic §fl number and transmitted to the processing circuit 30. Depending on the application of the optical touch device, the output signal of the processing circuit 30 can be used for different purposes. For example, when the optical touch device 10 is a touch panel on a notebook computer, the output signal of the processing circuit 30 is output. It can be used to control the movement of the joystick 41 on the display screen 4; when the optical touch device 10 is a touch-type honor screen on the automatic teller machine, it can be used to control other devices (not shown) to perform actions, such as transferring funds. The light material captured by the Jingwei sensing module 16 is two-dimensional information; if it is only necessary to calculate the movement on the two-dimensional plane, for example, simply controlling the movement of the cursor, it is sufficient. The 3D transfer of the 2G device provides 1 energy, for example, on the screen menu, the image sensing module can be set up with more than two sensors, and according to the received image, between the devices The relative distance, the focal length of the sensor, etc., calculate the three-dimensional movement of the wheel ^. In detail, as shown in the second example, it is assumed that the center position distance between the left and right sensors 8 200841227 is Γ' (4) the focus distance is /, the image contains the f object' and the object is sensed on the left. The χ coordinate in the image is X/, and the x coordinate in the two-dimensional image obtained from the right side is the origin of the sensor feeding, and x′ is on the left side of the right position of the right side. Negative value), and the distance of the object from the sensor is Z, according to the similar triangle theorem, χ///Ί/ζ, and _Xr//=:nz, the three-dimensional information of the object can be obtained: Χ={Τ X Xi)/(xrxr) Y (T x yi)/{xrxr) (less of which is not shown in the figure) Z=/x [T/(xrxr)] In this way, 卽 can be generated The three-dimensional information of the object. Of course, the above calculation method is only one of the feasible methods. In addition to the above methods, other methods can be used to calculate the three-dimensional information. How to calculate the two-dimensional poverty news, and the county case focus, so The details of all the possible practices are as follows: The focus is that the touch device provides information in another dimension, making it more versatile. Please refer to Figure 3, which is the invention. In another embodiment, the optical touch device of the present embodiment includes a lens phantom 5 and a feedback control circuit P in addition to the light source 12, the light guiding module 14, and the image sensing pull group 16. The module is included with one or more lenses 151_152 to assist the image_module 16 to capture images more accurately. The feedback control circuit 17 acts on the brightness of the illuminating light source 12. When the image sensing module 16 senses The light is too weak, and the effect is not scaled. The anti-missing circuit 17 200841227 feeds back the adjusted light source I) according to the condition of the shirt image sensing board group 16. The redundancy is shown in the above figure 1 and 3. In the figure, the input device 2 is drawn as the area of the touch surface 141. Figure 4 shows another embodiment of the present invention, as shown in the figure of the wheel in the present embodiment. 20 (for example, a finger) whose area can cover most or all of the area of the touch surface 141. By detecting the movement of the surface pattern of the input device 20 (for example, the movement of the fingerprint), a dimensional or two-dimensional information can be generated. 'For example, to control the cursor, select options in the menu, etc. The human f2G can cover most of the area of the touch meter from (4). Therefore, it is not absolutely necessary to set the touch surface (4) knife in the present embodiment, that is, it can only be the - hole on the casing U. The touch surface 141 or only the opening may be provided to extract optical information at the position. In some cases, the side of the control surface 141 is mainly for preventing external dust from falling into the body and causing pollution; facilitating the identification input device 2 The movement of 〇 is a secondary. Under some other tracks, the touch surface 141 itself is - can press _ ant-part to provide other control functions; at this time, as the button, Wei is the main, _ touch The loss of the person to buy £ 2Q is secondary. In the embodiment shown in Fig. 4, in order to further reduce the bribe of the overall optical touch device, the guide group 14 and the lens module 15 can be integrated into a body. Of course, depending on the design ridge of the device itself, the lens module 15 can also be provided separately. The optical touch device of FIG. 4 can be applied, for example, to a smaller electronic device 10 200841227 f-number of assistants, portable music broadcasts, etc.; (=), touch surface (4) or _ example == no screen Below, above the button. Job
去，1^雌較佳實侧錢明本_，唯以上所述 、，”為使縣本技術者易於了解本發明的内容而已， 亚非用來限定本伽之翻翻。對於熟悉本技術者，當 可在本發’神内，立即思及各鮮效·。舉例而言: 所示之各元件，可在其_加不影·主要魏的其^附 加7G件，處理電路3〇雖繪示為光學觸控裝置川之外部元 件，亦可整合為内部元件；反饋控制電路17之輸入訊號可 自影像感測模組16擷取，亦可自處理電路30擷取，等等。 凡此種種，有各種等效變化的可能。故凡依本發明之概念 與精神所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1圖為本發明之第一實施例。 第2圖說明如何計算三維座標資訊。 第3圖為本發明之第二實施例。 第4圖為本發明之第三實施例。 弟5圖為弟4圖實施例的一個應用例。 【主要元件符號說明】 200841227 光學觸控裝置 機殼 光源 導光模組 觸控表面 透鏡模組 ，152透鏡 影像感測模組 反饋控制電路 輸入裝置 反光材質 處理電路 顯不榮幕 游標Go, 1^Female is better than the side of the money _, only the above, "In order to make the county's technical users easy to understand the content of the present invention, Asia and Africa are used to limit the turn of this gamma. For familiar with the technology In the present, you can immediately think about the various effects. For example: the components shown in the figure can be added to the 7G parts of the main Wei, and the processing circuit 3 The external components of the optical touch device can also be integrated into internal components; the input signals of the feedback control circuit 17 can be extracted from the image sensing module 16, or can be retrieved from the processing circuit 30, and the like. There is a variety of equivalent changes in the above-mentioned embodiments, and all changes or modifications according to the concept and spirit of the present invention should be included in the scope of the patent application of the present invention. The first embodiment of the invention. Fig. 2 illustrates how to calculate three-dimensional coordinate information. Fig. 3 is a second embodiment of the present invention. Fig. 4 is a third embodiment of the present invention. An application example. [Main component symbol description] 200841227 Optical A light source control device housing module touch surface of the light guide lens module, the image sensor module 152 lens feedback control circuit means input processing circuit reflective material substantially not wing screen cursors