201237711 六、發明說明： 【發明所屬之技術領域】 本發明係種光通訊對應構造，尤指於觸控震 置藉由光祕制之τ對於狀可供觸統誠(調變光) 之债測、分析、辨識做為相對位置運算基礎，卩判別被測物特 定位置之裝置。 【先前技術】 先前技術所使用於觸控裝置之對應構造，其影像感測器 (21)如第-圖所示，通常設於—鏡頭(27)後方，包括複數線性 排列之陣列像素列(20)經由影像處理單元(29)，然後如第二圖 所不，經由一石英震盪器(22)，連接該影像感測器(21)用以處 理功能時序；然後經由_圖框緩衝器(23)以及一記憶體(24): 同時經由一可程式邏輯元件(25)以及一訊號處理器(26)，由該 訊號處理器(26)與該可程式邏輯元件⑼形成連接；且該訊號 處理器(26)與該記憶體(24)形成連接，藉由對該記憶體(24)内之 =貝料形成取用，以對影像感測器(21)所感測之影像資料形成處 理。綜合而言，該可程式邏輯元件(25)(CPLD)是來處理所需的 功能時序，以控制影像感測器(21)輸出，作為影像感測器 (21)(Image Sensor)和圖框緩衝器(23)(Frame Buffer)之間的緩 衝’再將所擷取的影像儲存至圖框緩衝器(23)(Frame Buffer)所 連接之記憶體(24)，等待訊號處理器(26)(DSP)取用。 201237711 一般影像處理’通常都必須以影像之完整擷取為目的，就 原理而言，靡賴每單轉素受細度強騎產生的不同電 流值，轉換產生相職的不_度(灰階)朗，祕後端運用 軟體做輝度(灰pm狀分析與_，方能構成-完整影像梅 取基礎，細為綱位置的基礎，因此必須透過完㈣密之複 數線性排列所形成之陣列像素列(2〇)(配合第二圖)來娜大量 資料’經由繁複綿密運算才可以獲得訊號資訊，因此所需的硬 體成本大幅提高。 但是當此郷像感測若只作為麟使用者之人手指、觸控 筆或其他觸娜介在該大型螢幕巾之影雜置，實際上並不需 要以成本較高之高階運算構造，從而在該先紐術之影像感測 器，實有簡化資料運算以及降低成本之需求。 而先前技術的運算基礎為像素列中各像素單元因受光強 弱進而對應產生的輝度(灰階)級別之判別，也常因工作環境其 他光源的干涉’往往大幅提升此種原理之觸控裝置無法使用或 增加作動誤判機會，且這種情況也會因像素列的減少進而增加 作動誤判的機會。 【發明内容】 有鑑於前述之問題，本發明者認為應有一種改善之構造， 為此設計一種用於觸控裝置之光通訊對應構造，包括： —四邊形工作區域： 4 201237711 一訊號產生及發送單元：可供發送特定可供辨識的光源訊號； 二訊號接收感測單元：分別設於該四邊形工作區域之同一邊， 令其面向往該四邊形工作區域内，以供直接或間接取得該光 源訊號位置判別參數，該二訊號接收感測單元各包括一光檢 知單元，藉以接收該光源訊號，且經由該各光檢知單元内置 之光電元件做光電效應轉換藉以產生相對應之電訊號，以及 該各光檢知單元設-_單元，關_該電峨，以判斷 是否容許該電訊號流過該辨識單元； -位置運算單:得靖流過該_單元之電訊賴換為數位 磁且雜置運算單元設有或連接—触電路，該光檢知單 兀與該掃描f路形成電性連接；侧讀取此數健號，可由 驅動時脈依序計數判別得知特定可供辨識之資訊於光檢知 單元複數線性排列之位置，進而擁取一有用訊息可供後端運 用軟體獲取所需之·資訊，進行被騎於_四邊形工作 區域之相對應位置計算。 藉由本發㈣易訊賴測，因此可以使用相對較為低階運 算之位置單元進行即可處理，並肋計算該統訊號之特 定位置(特伽_所叙錄）。免除先前馳必彡貞以較為高 階之處理H對於擷取之影像進行處理祕大成本。 【實施方式】 主以下藉由圖式說明本發明之内容、特色以及實施例，俾使 貝審查委員對於本發明有更進—步之瞭解。 201237711 本發明係關於一種用於觸控裝置之光通訊對應構造，包 括： 一訊號產生及發送單元(發射端X114):(請參閱第十二圖所示) 可供發送特定可供辨識的光源訊號(調變光）；其中該光源訊 號可以多元化選自於光媒介所產生的頻率、相位、振幅、密 碼之群組，且該辨識單元(112C)為可判斷該光源訊號之電 路，且該電路選自於可判斷該光源訊號之濾波器、鎖相迴 路、解碼器之電路群組。該訊號產生及發送單元(114)内部設 有一調變電路(114A)，該調變電路(114A)選自於可產生可被 濾波器、鎖相迴路、解碼器之電路群組判斷出訊號特徵之電 路，以產生特定可供辨識的脈衝電流或訊號。該訊號產生及 發送單元(114)電路後端連接一發光元件(114B)，藉由該調變 電路作動產生特定可供辨識的脈衝電流，並得以使該發光元 件(114B)令其產生相對應之特定光源訊號(調變光）。該調變 電路(114A)較為便利之優選為震盪器或編碼器之電路。訊號 產生及發送單元(114)所發送之特定可供辨識的光源訊號(調 變光），其形成是先供給訊號產生及發送單元(114)電路一個 定電流(電壓)並透過訊號產生及發送單元(H4)内置之振盪 電路(或編碼器等)設定產生一特定可供辨識的脈衝電流(電 訊號），此時的資訊是以電流做為其載體。利用此特定脈衝 電流來觸發訊號產生及發送單元（114)後端之發光元件 (114B)(發光二極體Xlight-emitting diode, LED)，使其作動產 生相對應之特定光源訊號(調變光)。光經過調變(modulation) 6 201237711 後便能攜帶資訊(即成為：光源訊號），此時「資訊」是以「光」 做為其載體，而光的強弱大小並不影響資訊的承載與傳播。 一般而言，光源訊號(調變光)具有特定之頻率、相位、振幅、 密碼......等的辨識特徵。而可見光或不可見光皆可做為資訊 的載體。操作時亦可以利用媒介(例：人手指)來遮斷光的行 進而造成反射並由接收端來接收此反射的光源訊號(調變 光）。亦或設置一光筆來產生及發射一調變光並由接收端來 接收此直射的光源訊號(調變光）。 一§凡號接收感測单元(11).(請參閱第八圖，配合第三圖所示) 該第八圖之實施例，該二訊號接收感測單元(U)分別設於一 四邊形工作區域(A)之同一邊，得令其光源射線往該四邊形 工作區域内交又，並與該同一邊形成界定為一觸控區塊 (B) ’以便取得位置判別參數；又’前述該訊號產生及發送 單元(發射端)(114)可以任何直接或間接之發射光線模式令 该接收感測單元(11)直接或間接取得該光源訊號位置判別參 數，以直接為例’例如-觸控筆本身亦可具有一該訊號產生 及發送單元(發射端)(114)，可以提供該接_測單元⑼直 接取得光源訊號。以間接為例’則該訊號產生及發送單元(發 射端)(114)可以設置於如第八圖所示之位置，利用反射光提 供該接收感測單元(11)接收。 該二訊號接收感測單元（11)各包括一光檢知單元 (m)，其中該光檢知單元(112)更可為兩個以上，形成線性 排列。藉以接收該光源訊號(婦光），且經由該光檢知單元 201237711 (112)内置之光電元件(光二極體或光電晶體)做光電效應轉 換藉以產生相對應之電訊號’以及光檢知單元(U2)設一辨 識單元(112C)(以滤波器為例）’以供辨識該電訊號，以判斷 是否容許該電訊號流過該辨識單元(112c)(以濾波器為例）； 且該光檢知單元(112)包括一光電元件(或光電晶體)(112a)， 且該光電元件（或光電晶體)(112Α)電性連接一放大器 (112Β)，用以接收、解碼及分析特定位置之光源訊號(調變 光)。 一位置運算單元(113): 得以將流過該辨識單元(112C)(以濾波器為例)之電訊號轉換 為數位訊號且該位置運算單元(113)設有或連接一掃描電路 (113Α) ’該光檢知單元(112)與該掃描電路(113Α)形成電性連 接；偵測讀取此數位訊號，可由驅動時脈依序計數判別轉知 該特定可供辨識之資訊於光檢知單元(112)複數線性排列之 位置’進而擷取一有用訊息可供後端運用軟體獲取所需之運 算資訊，進行被測物於觸控四邊形工作區域之相對應位置計 請參閱第八®，配合第十—騎示’該訊號接收感測單元 (11)包括前側所設之一透鏡(丨丨6)。該透鏡(116)後側更設一濾光 片（115)，更可以濾除特定之光雜訊。該訊號接收感測單元⑴） 兩侧更設-訊號產生及發送單元(114)提供必要之蚊可供辨 識的光源訊號(調變光）。 ’、 8 201237711 以該較佳之實施例說明，該訊號接收感測單元(11)可對進 入透鏡(116)及濾光片（115)之光源訊號(調變光)進行偵測(請配 合第十一圖所示）。該各訊號接收感測單元(11)各設有一掃描電 路(113A)(請配合第六圖所示），該各光檢知單元(112)更於該放 大器(112B)連接一辨識單元(112C)(以濾波器為例），經濾波所 產生之訊號「有」、「無」做為判讀相對位置資訊之基礎。 位置運算單元(113)與該複數光檢知單元(112)複數線性排 列之位置形成電性連接，且該位置運算單元(113)連接該掃描電 路(113A)，藉以對該訊號接收感測單元(11)之掃描電路(ιΐ3Α) 掃描獲取之資訊進行相對位置計算，並以該計算所得之資料， 得以精確判別該被測物的相對位置。 本發明之電路動作原理，請參閱第三圖所示，係運用光通 訊技術之訊號接收感測單元(11)，以及第五圖所示，由可將該 光檢知單元(112)形成複數之集合，主要是輸入一個連續的時脈 訊號(clock)去驅動掃描電路(113A)(例:移位暫存器），並輸入 Start Pulse(初始脈波)來判別一個週期的完成。該光電元件(光 二極體或光電晶體）（112 A)在接收到入射之光源訊號(調變光) 時會因光電效應作動產生相對應之脈衝電流，該電流會被該放 大器(112B)做電流放大’並由掃描電路(n3A)選擇輸出，即可 由掃描電路(113A)的輸人時脈，並透過辨識單元(112C)(以渡波 器為例)產生訊號之「有」、「無」為位置資訊之基礎(如第四圖 所示）第九圖為本發明的訊號接收端(至少兩個觸取訊號後取 得其位置參數去定位被測物之示意圖。 201237711 為此’本發明提出解決雜訊光源的困擾。在該訊號接收感 測單元⑼兩侧之訊號產生及發送單元(發射端)(114)射出光線 前，先藉由内置之調變電路作動得以施加一特定頻率使射出光 產生調變，而在掃描電路⑽A)内部，本發明設計辨識單元 (112C)(以紐H為例）’因產生判讀位置伽以接受特定頻率 之光源訊號’故亦可祕不帶相_率_訊源的干擾，為本 發明另一目的。 而值得-提的是，本發明所設之辨識單元⑴2〇(以遽波器 為例），所呈現之特性曲線，請參閱第十圖所示，特定頻率的 增益十分明顯，非此特定頻率則被衰減。 综上所述，本發明確實符合產業利用性，且未於申 於刊物或公開使用，亦未為公麵知悉，且具 性’符合可專利性之要件，矣佑味担山击 ‘”、員而易知 *赚之要件’魏法提$專财請㈧紅述 為本發明產红-概實酬，舉職树 作之均等變化，㈣本案訴求標的之範嗨。__所 201237711 【圖式簡單說明】 第一圖係先前技術之影像感測器示意圖 第二圖係先前技術之影像感測器裝置示意圖 第二圖係本發明單一光檢知單元示意圖 第四圖係本發明判讀位置原理示意圖 第五圖係本發明複數光檢知單元集合所組成之光頻感測器示 意圖 第六圖係本發明為單一光檢知單元組合後之架構示意圖 第七圖係本發明為接受光頻率後電路擷取訊號方式作動示意 圖 第八圖係本發明以光頻感測器感測被測物相對位置之觸控裝 置示意圖 第九圖係本發取得位置參數去定位被測物之流程示意圖 第十圖係本發明帶通據波器增益效果示意曲線圖 第十-圖係本發明之透鏡與濾光片對應關係之立體圖 第十二圖係本發明訊號產生及發送單元方塊示意圖 201237711 【主要元件符號說明】 (11).訊號接收感測單元 (112) .光檢知單元 (112A).光電元件 (112B).放大器 (112C).辨識單元 (113) .位置運算單元 (113A).掃描電路 (114) .訊號產生及發送單元 (114A).調變電路 (114B).發光元件 (115) .濾光片 (116) .透鏡 (20).陣列像素列 pi).影像感測器 (22) .石英震盪器 (23) .圖框緩衝器 (24) .記憶體 12 201237711 (25) .可程式邏輯元件 (26) ·訊號處理器 (27) .鏡頭 (29).影像處理單元 (A) .四邊形工作區域 (B) .觸控區塊201237711 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a light communication corresponding structure, in particular, a touch-sensitive shock by means of a light secret τ for a shape to be touched by Tong Chengcheng (tune light) Measurement, analysis, and identification are used as the basis for relative position calculation, and the device that discriminates the specific position of the measured object. [Prior Art] The corresponding structure used in the prior art for the touch device, the image sensor (21), as shown in the first figure, is usually disposed behind the lens (27), and includes a plurality of linear arrays of pixel columns ( 20) via the image processing unit (29), and then as shown in the second figure, via a quartz oscillator (22), the image sensor (21) is connected to process the function timing; then via the _ frame buffer ( 23) and a memory (24): simultaneously connected to the programmable logic element (9) by the signal processor (26) via a programmable logic component (25) and a signal processor (26); and the signal The processor (26) is connected to the memory (24), and is formed by the image material in the memory (24) to form an image data sensed by the image sensor (21). In summary, the programmable logic component (25) (CPLD) is used to process the required functional timing to control the image sensor (21) output as an image sensor (21) (Image Sensor) and frame Buffer between the buffers (23) (Frame Buffer) and then store the captured image to the memory (24) connected to the frame buffer (23), waiting for the signal processor (26) (DSP) access. 201237711 General image processing 'usually must aim at the complete capture of the image. In principle, depending on the different current values generated by the fineness of each single pass, the conversion produces a non-degree of gray (gray scale) Long, the secret back end uses the software to do the brightness (grey pm analysis and _, can constitute - the complete image of the foundation, the fine basis of the position, so must be through the (four) dense complex linear array of array pixels Column (2〇) (with the second picture) to get a lot of information 'through the complicated operation to get the signal information, so the required hardware cost is greatly improved. But when this image sensing is only used as a user Human fingers, styluses, or other touches are mixed in the shadow of the large screen towel. In fact, there is no need for a high-cost computational structure at a higher cost, so that the image sensor of the first button is simplified. The operation and the need to reduce the cost. The calculation basis of the prior art is that the pixel units in the pixel column are determined by the intensity of the light (the gray level) corresponding to the light intensity, and often the other light sources in the working environment are dry. 'The touch device that greatly enhances this principle cannot be used or increases the chance of misjudgment, and this situation also increases the chance of misjudgment due to the reduction of the pixel column. [Invention] In view of the foregoing problems, the inventors It is considered that there should be an improved structure. For this purpose, an optical communication corresponding structure for the touch device is designed, including: - a quadrilateral working area: 4 201237711 A signal generating and transmitting unit: for transmitting a specific light source signal that can be identified; The two signal receiving and sensing units are respectively disposed on the same side of the quadrilateral working area, and are oriented to the quadrilateral working area for directly or indirectly obtaining the light source signal position determining parameter, and the two signal receiving and sensing units respectively include a light detecting unit for receiving the light source signal, and photoelectrically converting the photoelectric element built in the light detecting unit to generate a corresponding electrical signal, and the light detecting unit is provided with a -_ unit, off _ The electric sputum to determine whether the electric signal is allowed to flow through the identification unit; - the position calculation sheet: The telecommunication unit of the _ unit is replaced by a digital magnetic device, and the interfering operation unit is provided with or connected to the touch circuit, and the optical detection unit 形成 is electrically connected with the scanning f path; the side reads the number of health signals, and can be driven by The pulse sequentially counts and discriminates that the specific information that can be identified is located in the linear alignment of the optical detection unit, and then acquires a useful message for the back end application software to obtain the required information to perform the riding on the quadrilateral work. The corresponding position calculation of the region is calculated by the present invention. Therefore, the position unit of the relatively low-order operation can be used for processing, and the specific position of the signal is calculated (Tega_reported). Exempting the previous processing must be performed at a higher level of processing H for the captured image. [Embodiment] The following describes the contents, features and embodiments of the present invention by means of a schematic diagram. The present invention has a further understanding. 201237711 The present invention relates to an optical communication corresponding structure for a touch device, comprising: a signal generating and transmitting unit (transmitting end X114): (see FIG. 12) for transmitting a specific recognizable light source a signal (modulation light); wherein the light source signal can be diversified from a group of frequencies, phases, amplitudes, and passwords generated by the optical medium, and the identification unit (112C) is a circuit that can determine the light source signal, and The circuit is selected from the group of circuits for determining a filter, a phase locked loop, and a decoder of the light source signal. The signal generating and transmitting unit (114) is internally provided with a modulation circuit (114A), and the modulation circuit (114A) is selected from the group of circuits capable of generating a filter, a phase-locked loop, and a decoder. Signal characteristic circuit to generate a specific pulse current or signal that can be identified. The signal generating and transmitting unit (114) is connected to a light-emitting element (114B) at the rear end of the circuit, and the modulation circuit is activated to generate a specifically identifiable pulse current, and the light-emitting element (114B) is caused to generate a phase. Corresponding to the specific light source signal (modulation light). Preferably, the modulation circuit (114A) is preferably an oscillator or an encoder circuit. A specific identifiable light source signal (modulation light) sent by the signal generating and transmitting unit (114) is formed by supplying a constant current (voltage) to the signal generating and transmitting unit (114) circuit and generating and transmitting the signal through the signal. The built-in oscillation circuit (or encoder, etc.) of the unit (H4) is set to generate a specific pulse current (electric signal) that can be identified. The information at this time uses current as its carrier. The specific pulse current is used to trigger the light-emitting element (114B) (light-emitting diode XLight-emitting diode, LED) at the rear end of the signal generating and transmitting unit (114) to be activated to generate a corresponding specific light source signal (modulation light) ). After the light is modulated 6 201237711, it can carry information (that is, become a light source signal). At this time, "information" uses "light" as its carrier, and the intensity of light does not affect the bearing and transmission of information. . In general, the light source signal (modulated light) has an identification characteristic of a specific frequency, phase, amplitude, password, and the like. Both visible light and invisible light can be used as a carrier of information. The medium (for example, a human finger) can also be used to block the line of light and thereby cause reflection and receive the reflected light source signal (modulation light) by the receiving end. A light pen is also provided to generate and emit a dimming light and the receiving end receives the direct light source signal (modulated light). A singular receiving sensing unit (11). (Please refer to the eighth figure, in conjunction with the third figure.) In the embodiment of the eighth figure, the two signal receiving sensing units (U) are respectively arranged in a quadrilateral operation. The same side of the area (A) is such that its light source rays are intersected into the quadrilateral working area, and the same side is defined as a touch block (B) 'to obtain a position discriminating parameter; and the aforementioned signal The generating and transmitting unit (transmitting end) (114) can directly or indirectly obtain the light source signal position discriminating parameter by the receiving or sensing unit (11) directly or indirectly, for example, for example, a stylus The signal generating and transmitting unit (transmitting end) (114) may be provided by itself, and the connecting unit (9) may be provided to directly obtain the light source signal. Indirectly, the signal generating and transmitting unit (transmitting end) (114) may be disposed at a position as shown in the eighth figure, and the receiving sensing unit (11) is provided with reflected light. The two signal receiving and sensing units (11) each include a light detecting unit (m), wherein the light detecting unit (112) may be more than two, forming a linear arrangement. The light source signal (light) is received, and the photoelectric element (photodiode or photoelectric crystal) built in the light detecting unit 201237711 (112) is used for photoelectric effect conversion to generate a corresponding electrical signal' and a light detecting unit. (U2) an identification unit (112C) (for example, a filter) is provided for identifying the electrical signal to determine whether the electrical signal is allowed to flow through the identification unit (112c) (taking a filter as an example); and The light detecting unit (112) includes a photoelectric element (or photoelectric crystal) (112a), and the photoelectric element (or photoelectric crystal) (112Α) is electrically connected to an amplifier (112Β) for receiving, decoding and analyzing a specific position. Light source signal (modulation light). a position calculation unit (113): is capable of converting an electrical signal flowing through the identification unit (112C) (using a filter as an example) into a digital signal and the position operation unit (113) is provided with or connected to a scanning circuit (113Α) The optical detecting unit (112) is electrically connected to the scanning circuit (113Α); detecting and reading the digital signal, and the driving clock can sequentially count and discriminate to know the specific information that can be identified for light detection. The unit (112) is in a position of a plurality of linear arrays, and further obtains a useful message for the back end to use the software to obtain the required operation information. For the corresponding position of the object to be measured in the touch quadrilateral working area, please refer to the eighth®, In conjunction with the tenth-riding indication, the signal receiving sensing unit (11) includes a lens (丨丨6) provided on the front side. A filter (115) is further disposed on the rear side of the lens (116) to filter out specific optical noise. The signal receiving sensing unit (1) is further provided on both sides - the signal generating and transmitting unit (114) provides the necessary light source signal (modulated light) for the mosquito. ', 8 201237711 In the preferred embodiment, the signal receiving and sensing unit (11) can detect the light source signal (modulated light) entering the lens (116) and the filter (115) (please cooperate with the first Figure 11 shows). Each of the signal receiving and sensing units (11) is provided with a scanning circuit (113A) (please cooperate with the sixth figure), and the optical detecting unit (112) is further connected to the amplifier (112B) with an identification unit (112C). (In the case of a filter), the filtered signals "Yes" and "None" are used as the basis for interpreting relative position information. The position calculating unit (113) is electrically connected to the position of the plurality of linear detecting units (112) in a linear arrangement, and the position calculating unit (113) is connected to the scanning circuit (113A), thereby receiving the sensing unit for the signal. (11) Scanning circuit (ιΐ3Α) Scans the acquired information for relative position calculation, and uses the calculated data to accurately determine the relative position of the measured object. The circuit operation principle of the present invention, as shown in the third figure, is a signal receiving sensing unit (11) using optical communication technology, and a fifth figure, which can form the optical detecting unit (112) into plural numbers. The collection is mainly to input a continuous clock signal to drive the scanning circuit (113A) (for example, shift register), and input Start Pulse to determine the completion of a cycle. The photoelectric element (photodiode or optoelectronic crystal) (112 A) generates a corresponding pulse current due to the photoelectric effect when receiving the incident light source signal (modulation light), and the current is made by the amplifier (112B) The current is amplified and selected by the scanning circuit (n3A), which can be generated by the input clock of the scanning circuit (113A) and transmitted through the identification unit (112C) (taking the waver as an example) to generate the signal "Yes" or "None". The ninth figure is the signal receiving end of the present invention (as shown in the fourth figure). The signal receiving end of the present invention (at least two touch signals obtain their position parameters to locate the measured object. 201237711 Solving the problem of the noise light source. Before the signal generating and transmitting unit (transmitting end) (114) on both sides of the signal receiving sensing unit (9) emits light, the specific frequency is applied by the built-in modulation circuit. The emitted light is modulated, and in the scanning circuit (10) A), the design identification unit (112C) of the present invention (for example, the New H) is used to receive the light source signal of a specific frequency by generating the interpretation position. _ rate _ source of dry Another object of the present invention. It is worth mentioning that the identification unit (1) 2〇 (using a chopper as an example) provided by the present invention has a characteristic curve, as shown in the tenth figure, the gain of a specific frequency is very obvious, and the specific frequency is not specific. It is attenuated. In summary, the present invention is indeed in line with the industrial applicability, and has not been applied for publication or public use, nor has it been known to the public, and has been sexually 'in compliance with the requirements of patentability, and has been cherished by the mountain.' And easy to know * earning the elements 'Wei Fati $ special wealth please (8) red saying that the invention is red - the actual reward, the equal change of the job tree, (four) the scope of the case appeal. __201265311 BRIEF DESCRIPTION OF THE DRAWINGS The first diagram is a schematic diagram of a prior art image sensor. The second diagram is a schematic diagram of a prior art image sensor device. The second diagram is a schematic diagram of a single light detection unit of the present invention. The fourth diagram is the principle of the interpretation position of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5 is a schematic diagram of an optical frequency sensor composed of a plurality of optical detecting units of the present invention. FIG. 6 is a schematic diagram showing the structure of a single optical detecting unit. The seventh drawing is the optical frequency after receiving the optical frequency. FIG. 8 is a schematic diagram of a touch device for sensing the relative position of a measured object by an optical frequency sensor. FIG. 9 is a flow chart of obtaining a position parameter by the present invention to locate a measured object. Figure 10 is a perspective view showing the effect of the gain of the band pass filter of the present invention. Fig. 10 is a perspective view showing the correspondence between the lens and the filter of the present invention. FIG. 12 is a block diagram of the signal generating and transmitting unit of the present invention 201237711 [Mainly (1). Signal receiving and sensing unit (112). Optical detection unit (112A). Photoelectric element (112B). Amplifier (112C). Identification unit (113). Position operation unit (113A). Scanning Circuit (114). Signal generation and transmission unit (114A). Modulation circuit (114B). Light-emitting element (115). Filter (116). Lens (20). Array of pixel columns pi). Image sensor (22). Quartz oscillator (23). Frame buffer (24). Memory 12 201237711 (25). Programmable logic component (26) · Signal processor (27). Lens (29). Image processing unit (A). Quadrilateral working area (B). Touch block