1356289 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種動態光源標準方法與裝置，尤指 一種利用光源回授補償及即時比對光電轉換校正參數， 以修正標準光源強度’且此校正參數可追溯至國家標準實 驗室；藉此’可透過標準光源真實模擬受測光源，^供量 測儀器量測動態光源響應時間之參考標準方法與農置:1 【先前技術】 就各類顯示器面板而言，當應用於數位電視時， 響應時間（Response Time)直接影響電視視訊之動全== 表現，各生產廠家對面板品質要求也更為重視，其=品質 液晶面板為最甚；然目前一般業者針對應答時間^淠=以 性仍存在某些差異，除了各家業者所認定之量測^ 致 算基礎不同外，雖然已有產業標準，由於量测技術笋5十 臻成熟，使得量測標準並不完善，業界實際運用;y展未 在許多爭議；再由於目前各動態參數標準追溯鏈並仍2 整，或缺乏具有公信之標準參考物質，使得現有量咧< 疋 皆無法執行標準追溯，造成量測數據不一，往往造成^備 商與中下游廠商或消費者間產生各種糾紛。 乂、氣造 習知一般業者所採用之響應時間量測架構，主 建一電壓波形，透過一穩定動態光源控制電路， 係内 "7^ ^/j 發光二極體光源，以作為動態光源輸出之標準；惟，二 境或遲滯、元件老化及飄移等因素影響，常導致發光因= 1356289 體無法維持一定亮度’若以前述該傳統開放式迴路量測架 構而言’僅單純偵測發光二極體明暗狀況，無即時回授光 源控制功能，無法對發光二極體輸出亮度進行即時修正， 自然導致量測結果出現誤差。 據此可知，習知動態光源儀器由於無法修正發光二極 體光源輸出党度，亦無法對發光一極體光源驅動進行溫度 補償或恆溫控制，當長時間量測後，發光二極體光源因為 溫度或元件衰竭等原因造成亮度不足時，則會影響量測精 確度·，業界對於面板響應時間量測方法與設備即使相同， .但數據差異仍大’急需一應答標準件作為量測標準的依據。 至於針對偵測或監控光源亮度所提出之習知專利中， 例如中華民國發明專利申請第94101733號「自動調節照明 設備光度之方法及裝置」，該案利用光度感測器偵測取得照 明設備之光源光度，與使用者設定之目標光度值進行比 對，以對應調節該照明設備之輸出電壓，藉此提供照明設 備不致因為老化或電壓變化而影響照明設備光度及壽命。 如中華民國發明專利公開第200502508號「光源裝置 及其所用之光量監控器」，該專利使用光感測器檢測照射光 量變化，於發生光量所造成之照射光量變化，或發生光量 分布形態變化所造成之照射光量變化時，仍可對光源裝置 正確檢測，以維持照射光量恒定，其目的在於精確量測光 源亮度而已。 如美國發明專利第6788011號「Multicolored發光二 極體lighting method and apparatus」，其係利用電腦程 式監控發光二極體亮度或顏色，以適用於不同環境。 1356289 而美國發明專利第6038021號「Optically based on-line fiber monitoring system with drift compensation」’則係利用光偵測器（PD，Photodetector) 及時監控發光二極體特性。 據此可知，習知專利前案均係單純監測光源物理特 性，並未能見針對液晶顯示器動態光源儀器量測誤差所提 出之改善技術手段。 【發明内容】 有鑑於習知技術之缺失，本發明之目的在於提出一種 動態光源標準方法與裝置，利用光源回授補償及即時比對 光電轉換校正參數，用以修正標準光源強度，且此校正參 數可追溯至國家標準實驗室；藉此，可透過標準光源真實 模擬受測光源，提供量測儀器量測動態光源響應時間之參 考標準方法與裝置。 為達到上述目的，本發明提出一種動態光源標準方 法，首先備置一内建動態電壓波形單元，用以提供驅動一 標準光源所需之電壓波形，該標準光源係電性連接一光源 輸出單元；再由一穩定動態光源回授控制單元將電壓波形 轉成電流形式；並由該穩定動態光源回授控制單元驅動該 標準光源發光；再由一光訊號接收單元偵測該標準光源亮 度，並回授一光源訊號至一光電轉換校正參數單元；由該 光電轉換校正參數單元將該光源訊號與一校正參數進行比 對，並產生電壓偏移補償修正值，將該電壓偏移補償修正 值傳送至該穩定動態光源回授控制單元，以修正該標準光 «9 源之亮度。 為達到上述目的，本發明更提出一種動態光源標準裝 ，，其包含一標準光源'一内建動態電壓波形單元、一穩 疋動態光择回授控制單元、一光訊號接收單元以及一光電 轉換枝正參數單元；該標準光源係電性連接一光源輸出單 兀兩。亥内建動態電壓波形單元係用以提供驅動該標準光源 所需之電壓波形；該穩定動態光源回授控制單元係用以將 電壓波形轉成電流形式，並驅動該標準光源發光；該光訊 號接收單元係用以偵測該標準光源亮度，並回授一光源訊 號，該光電轉換校正參數單元係用以接收該光源訊號，將 $先源訊號與-校正參數進行比對，並產生電壓偏移補償 ’正值⑯該電塵偏移補償修正值傳送至該穩定動態光源 回授控制單元，以修正該標準光源之亮度。 、為使貝審查委員對於本發明之結構目的和功效有更 進-步之了解與認同，兹配合圖示詳細說明如后。 【實施方式】 、下將>’、、、&附之圖式來描述本發明 用的技術手段與功效’而以丁闯斗、a h咬双曰刃尸/η史 助說明，以利貴i杳委員=圖” r之實施例僅為辅 於所列舉圖式委貝瞭解，但本案之技術手段並不限 請參閱第-圖所示，本發明所提供 置1〇’其包含-内建動瞻波形單元11、：; = 源回授控制單元12、進n 1Q 杈疋動恶光 H號接m 光源輪出單元14、 先號接收早疋15以及一光電轉換校正參數單元16。 1356289 該内建動態電壓波形單元11係用以提供驅動該標準 光源13所需之電壓波形，於該内建動態電壓波形單元11 内建多種電壓波形，可依測試需求組合輸出各種動態光源 波形；由該穩定動態光源回授控制單元12將電壓波形轉成 電流形式後傳送至該標準光源13,即可驅動該標準光源13 發光，並由該光源輸出單元14輸出；該標準光源13可採 用發光二極體，該内建動態電壓波形單元11所提供之電壓 波形包括亮度波形及時間波形，用以控制該標準光源13之 • 亮度或達到所需亮度之時間。 至於該光訊號接收單元15,係用以偵測該標準光源13 亮度，並可回授一光源訊號至該光電轉換校正參數單元 16 ;該光訊號接收單元15可採用光偵測器（Photo Detector 5 PD) ° 該光電轉換校正參數單元16具有至少一校正參數，將 光源訊號與校正參數進行比對後，可產生一電壓偏移補償 修正值，再將該電壓偏移補償修正值傳送至該穩定動態光 ® 源回授控制單元12，即可修正該標準光源13之亮度。同 樣地，該電壓偏移補償修正值包括亮度補償修正值及時間 .補償修正值。 再者，視實際情形所需，該光源輸出單元14可為動態 光源輸出單元或定點光源輸出單元，於本實施例中，該光 源輸出單元14電性連接一標準光訊號接收單元17，該標 準光訊號接收單元17又電性連接一運算處理單元18,由 該標準光訊號接收單元17偵測該光源輸出單元14之亮 度，並可回授一光源訊號至該運算處理單元18 ;該運算處 1.356289 理單元18對所接收之光源訊號進行運算處理，且可將運算 結果傳送至該光電轉換校正參數單元16進行校正參數比 對；其目的在於可針對該光源輸出單元14之實際輸出進行 監控；同樣地，該標準光訊號接收單元17可採用光偵測器 (Photo Detector ， PD)。 請參閱第二圖所示，其顯示本發明裝置另一實施例架 構20，同時用以說明本發明進行亮度及時脈自行校正之流 程；本實施例係基於第一圖所示架構，其包含一内建動態 電壓波形單元21、一穩定動態光源回授控制單元22、一標 準光源23、一定點光源輸出單元24、一光訊號接收單元 25以及一光電轉換校正參數單元26。 本實施例特點在於，該穩定動態光源回授控制單元22 包含一數位類比轉換器221以及一電壓電流轉換器222, 用以將電壓波形轉換為電流形式；再者，由於係進行亮度 及時脈校正，因此該標準光源23接續該定點光源輸出單元 24即可，同時，該定點光源輸出單元24連接一標準光源 接收單元29，該標準光源接收單元29可為國家實驗室或 具有公正性之實驗機構，可提供一標準光源接收值作為校 正基準，用以與該標準光源23之亮度進行比對；此外，該 光訊號接收單元25係電性連接一電流電壓轉換放大器251 以及一類比數位取樣模組252，用以將電流轉換為電壓波 形，以得到一實際輸出光源波形253 ;其次，該光電轉換 校正參數單元26包括一微電腦控制模組261、一時脈 (Clock)產生器262以及一計算單元263，藉由該時脈產生 器262可設定該微電腦控制模組261之校正參數基準時間 11 單位，例如10uS或且 261可接收該訾心所而時間早位；該微電腦控制模組 參數對比，Ίη/、輸出光源波形253’用以進行及控制校正 夕·，再將訊號傳送至該計算單元263進行+ 接該内建動離時:該微電腦控制模組261係電性連 離電壓、皮0电/皮形早凡21，可用以直接控制該内建動 二波形早兀21所輸出之電壓波形。 勒1356289 IX. Description of the Invention: [Technical Field] The present invention relates to a dynamic light source standard method and apparatus, and more particularly to a method for correcting a standard light source intensity by using a light source feedback compensation and an instantaneous comparison photoelectric conversion correction parameter. This calibration parameter can be traced back to the national standard laboratory; this can be used to simulate the measured light source through a standard light source, and the reference standard method for measuring the response time of the dynamic light source for the measuring instrument and the farm: 1 [Prior technology] For the display panel, when applied to digital TV, the response time directly affects the performance of TV video == performance. Manufacturers pay more attention to panel quality requirements. The quality LCD panel is the most However, there are still some differences between the general practitioners in response time and the nature of the response. In addition to the different measures determined by various industry players, although the basis of calculation is different, although there are industry standards, due to the measurement technology, the bamboo shoots are mature. So that the measurement standards are not perfect, the actual use of the industry; y exhibition is not in many disputes; and because of the current dynamic parameter standards And still two, or lack of standard reference materials with credibility, so that the existing quantity 咧 < 疋 can not perform standard traceability, resulting in different measurement data, often resulting in various disputes between the supplier and the middle and downstream manufacturers or consumers . The response time measurement architecture adopted by the general practitioners, the main construction of a voltage waveform, through a stable dynamic light source control circuit, the internal "quote" The standard of output; however, the influence of factors such as the second environment or hysteresis, component aging and drift often leads to the illuminance factor = 1356289. The body can't maintain a certain brightness. 'If the traditional open loop measurement architecture is used, it only detects the illuminance. The brightness and darkness of the diode, without the instant feedback of the light source control function, can not immediately correct the output brightness of the LED, which naturally leads to errors in the measurement results. According to this, it can be known that the conventional dynamic light source instrument cannot correct the output level of the light-emitting diode light source, nor can it perform temperature compensation or constant temperature control on the light-emitting one-pole light source driving. After a long time measurement, the light-emitting diode light source is When the brightness is insufficient due to temperature or component failure, the measurement accuracy will be affected. The industry's panel response time measurement method is the same as the device, but the data difference is still large. An urgent response standard is required as the measurement standard. in accordance with. As for the conventional patents for detecting or monitoring the brightness of a light source, for example, the Republic of China Patent Application No. 94101733 "Method and Apparatus for Automatically Adjusting the Illuminance of Lighting Equipment", the case uses a photometric sensor to detect and obtain a lighting device. The illuminance of the light source is compared with the target luminosity value set by the user to adjust the output voltage of the illuminating device accordingly, thereby providing the illuminating device without affecting the luminosity and life of the illuminating device due to aging or voltage changes. For example, in the Republic of China Patent Publication No. 200502508, "Light source device and light quantity monitor used therefor", the patent uses a light sensor to detect a change in the amount of illumination light, a change in the amount of illumination caused by the amount of light generated, or a change in the form of light quantity distribution. When the amount of illumination light is changed, the light source device can still be correctly detected to maintain a constant amount of illumination light, and the purpose is to accurately measure the brightness of the light source. For example, U.S. Patent No. 6,880,011, "Multicolored Light-emitting Diode Lighting Method and Apparatus", uses a computer program to monitor the brightness or color of a light-emitting diode to suit different environments. 1356289 and the US Patent No. 603801 "Optically based on-line fiber monitoring system with drift compensation" uses a photodetector (PD, Photodetector) to monitor the characteristics of the light-emitting diode in time. According to this, it can be seen that the prior patents of the prior patents simply monitor the physical characteristics of the light source, and fail to see the improvement techniques proposed for the measurement error of the liquid crystal display dynamic light source instrument. SUMMARY OF THE INVENTION In view of the absence of the prior art, the object of the present invention is to provide a dynamic light source standard method and apparatus for correcting the intensity of a standard light source by using a light source feedback compensation and an instantaneous comparison photoelectric conversion correction parameter, and the correction The parameters can be traced back to the national standard laboratory; thereby, the standard light source can be used to simulate the measured light source, and the reference standard method and device for measuring the dynamic light source response time by the measuring instrument are provided. In order to achieve the above object, the present invention provides a dynamic light source standard method, which firstly provides a built-in dynamic voltage waveform unit for providing a voltage waveform required to drive a standard light source, which is electrically connected to a light source output unit; The steady-state dynamic light source feedback control unit converts the voltage waveform into a current form; and the stable dynamic light source feedback control unit drives the standard light source to emit light; and the optical signal receiving unit detects the brightness of the standard light source, and feedbacks a light source signal to a photoelectric conversion correction parameter unit; the photoelectric conversion correction parameter unit compares the light source signal with a correction parameter, and generates a voltage offset compensation correction value, and transmits the voltage offset compensation correction value to the Stabilize the dynamic light source feedback control unit to correct the brightness of the standard light «9 source. In order to achieve the above object, the present invention further provides a dynamic light source standard package, which comprises a standard light source 'a built-in dynamic voltage waveform unit, a steady dynamic optical selective feedback control unit, an optical signal receiving unit and a photoelectric conversion The positive parameter unit; the standard light source is electrically connected to a light source output unit. The built-in dynamic voltage waveform unit is configured to provide a voltage waveform required to drive the standard light source; the stable dynamic light source feedback control unit is configured to convert the voltage waveform into a current form and drive the standard light source to emit light; the optical signal The receiving unit is configured to detect the brightness of the standard light source and feedback a light source signal, wherein the photoelectric conversion correction parameter unit is configured to receive the light source signal, compare the $ source signal with the correction parameter, and generate a voltage offset. The shift compensation 'positive value 16' is transmitted to the stable dynamic light source feedback control unit to correct the brightness of the standard light source. In order to make the Beck Review Committee have a better understanding and recognition of the structural purpose and efficacy of the present invention, the detailed description of the figure is as follows. [Embodiment] The following is a description of the technical means and functions used in the present invention with the accompanying drawings, and the descriptions of Ding Yudou, ah, and the ah 曰 / / η η , , , , , , , The embodiment of the i杳 member=图” r is only understood by the listed figure, but the technical means of the present invention are not limited to the one shown in the figure, and the present invention provides a The oscillating waveform unit 11::; = source feedback control unit 12, the input n 1Q 恶 恶 H H H m m m m m 光源 光源 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及1356289 The built-in dynamic voltage waveform unit 11 is configured to provide a voltage waveform required for driving the standard light source 13. The built-in dynamic voltage waveform unit 11 has a plurality of built-in voltage waveforms, and can output various dynamic light source waveforms according to test requirements. The steady dynamic light source feedback control unit 12 converts the voltage waveform into a current form and transmits it to the standard light source 13 to drive the standard light source 13 to emit light, and is output by the light source output unit 14; the standard light source 13 can be illuminated. Diode, the built-in The voltage waveform provided by the state voltage waveform unit 11 includes a brightness waveform and a time waveform for controlling the brightness of the standard light source 13 or the time required to reach the desired brightness. The optical signal receiving unit 15 is configured to detect the standard. The light source 13 is bright, and a light source signal can be fed back to the photoelectric conversion correction parameter unit 16; the optical signal receiving unit 15 can adopt a photo detector (Photo Detector 5 PD). The photoelectric conversion correction parameter unit 16 has at least one correction. After the parameter is compared with the calibration parameter, a voltage offset compensation correction value is generated, and the voltage offset compensation correction value is transmitted to the stable dynamic light source feedback control unit 12, thereby correcting the correction The brightness of the standard light source 13. Similarly, the voltage offset compensation correction value includes a brightness compensation correction value and a time compensation correction value. Further, the light source output unit 14 may be a dynamic light source output unit or a fixed point as required by the actual situation. In the embodiment, the light source output unit 14 is electrically connected to a standard optical signal receiving unit 17, the standard optical signal. The receiving unit 17 is electrically connected to an arithmetic processing unit 18, and the standard optical signal receiving unit 17 detects the brightness of the light source output unit 14, and can feedback a light source signal to the arithmetic processing unit 18; the computing unit 1.356289 The unit 18 performs arithmetic processing on the received light source signal, and can transmit the operation result to the photoelectric conversion correction parameter unit 16 for calibration parameter comparison; the purpose is to monitor the actual output of the light source output unit 14; The standard optical signal receiving unit 17 can use a photo Detector (PD). Please refer to the second figure, which shows another embodiment of the device 20 of the device, and is used to illustrate the brightness of the present invention. The pulse self-correcting process; the embodiment is based on the architecture shown in the first figure, which comprises a built-in dynamic voltage waveform unit 21, a stable dynamic light source feedback control unit 22, a standard light source 23, and a fixed point light source output unit 24. An optical signal receiving unit 25 and a photoelectric conversion correction parameter unit 26. The embodiment is characterized in that the stable dynamic light source feedback control unit 22 comprises a digital analog converter 221 and a voltage current converter 222 for converting the voltage waveform into a current form; furthermore, the brightness and time pulse correction are performed. Therefore, the standard light source 23 is connected to the fixed point light source output unit 24. At the same time, the fixed point light source output unit 24 is connected to a standard light source receiving unit 29, which can be a national laboratory or an experimental institution with impartiality. The standard light source receiving value is used as a calibration reference for comparing with the brightness of the standard light source 23; the optical signal receiving unit 25 is electrically connected to a current voltage converting amplifier 251 and an analog digital sampling module. 252, used to convert the current into a voltage waveform to obtain an actual output source waveform 253. Second, the photoelectric conversion correction parameter unit 26 includes a microcomputer control module 261, a clock generator 262, and a calculation unit 263. The clock generator 262 can set the calibration parameter reference of the microcomputer control module 261. 11 units, for example, 10uS or 261 can receive the heart and the time is early; the microcomputer control module parameter comparison, Ίη/, output source waveform 253' is used to perform and control the correction eve, and then the signal is transmitted to the The computing unit 263 performs + connection to the built-in dynamic separation: the microcomputer control module 261 is electrically connected to the voltage, and the skin is electrically/skinned. 21 can be used to directly control the built-in dynamic waveform. The voltage waveform of the output. Le
發明—圖所示架構配合以下計算實例，可說明本 發明進仃党歧時脈校正之方法主要可包含·· 二…，、、機fe、定，確認系統處於所需溫度紐境、物理 專八他相關條件之穩定狀態，方才開始進行量測。 2.。又疋時間單位及亮度解析，例如時間單位可為i〇uS，亮 度解析可為0. 〇llux ; 化Invention - The architecture shown in the figure is combined with the following calculation examples, which can explain that the method of correcting the clock correction of the present invention can mainly include the second..., the machine, the machine, the confirmation system is in the required temperature, the physical specialization Eight of his stable conditions before the conditions began to measure. 2.. In addition, time unit and brightness analysis, for example, the time unit can be i〇uS, and the brightness analysis can be 0. 〇llux;
疋義該内建動態電壓波形單元21 _之目標波形表對 應碼（Wave Table)Td ’由〇〜255亮度等級，依該波形表 對應碼Td依序每時間單位（例如1QuS)輸μ亮度對庫 碼，經數位類比轉換器22卜電流轉換器222、標J 光源23’由該定點光源輸出單元24輸出定點變化光源， 並記錄成實際輸出光源校正波形值表Tr ; 4. 經由该光訊號接收單元25回授光源訊號接收、電流電壓 轉換放大益251以及類比數位取樣模組252取樣，同時 量測並定義該實際輸出光源波形253為波形值表Tm ; 5. 比對罝測該實際輪出之波形值表Tm與該校正波形值表 Tr之差異，即可計算出補償修正值σ：=Τιη_ΤΓ ; 6. 改變波形表對應碼Td+補償修正值α，使得σ趨近於〇 ; 12 1356289 正標準光源強度，達到光源輸出精準，克服元件老化及漂 移等問題，且此校正參數可追溯至國家標準實驗室；藉此， 可透過標準光源真實模擬受測光源，提供不同型式面板製 造相關技術領域業者量測儀器量測動態光源響應時間之參 考標準。 惟以上所述者，僅為本發明之範例實施例而已，當不 能以之限定本發明所實施之範圍。即大凡依本發明申請專 利範圍所作之均等變化與修飾，皆應仍屬於本發明專利涵 • 蓋之範圍内，謹請貴審查委員明鑑，並祈惠准，是所至 禱0 【圖式簡單說明】 第一圖本發明裝置之架構示意圖。 第二圖係本發明裝置另一實施例架構以及執行亮度及 時脈自行校正之流程示意圖。 第三圖係第二圖實施例架構執行動態光源輸出校正之 流程示意圖。 【主要元件符號說明】 10、20、30-動態光源標準裝置 1卜21、31-内建動態電壓波形單元 12、22、32-穩定動態光源回授控制單元 221、 321-數位類比轉換器 222、 322-電壓電流轉換器 1356289 13、 23、33-標準光源 14、 24、34-光源輸出單元 15、 25、35-光訊號接收單元 251、 351-電流電壓轉換放大器 252、 352-類比數位取樣模組 253、 353-實際輸出光源波形 16、 26、36-光電轉換校正參數單元 261、 361-微電腦控制模組 262、 362-時脈（Clock)產生器 邡3、363-計算單元 17- 標準光訊號接收單元 18- 運算處理單元 29-標準光源接收單元 16内 该 The built-in dynamic voltage waveform unit 21 _ the target waveform table corresponding code (Wave Table) Td 'from 〇 ~ 255 brightness level, according to the waveform table corresponding code Td sequentially per time unit (for example, 1QuS) input μ brightness pair The library code, through the digital analog converter 22, the current converter 222, the standard J light source 23', the fixed point light source output unit 24 outputs a fixed point change light source, and is recorded as the actual output light source correction waveform value table Tr; 4. via the optical signal The receiving unit 25 feeds back the light source signal receiving, the current voltage conversion amplification benefit 251, and the analog digital sampling module 252 to sample, and simultaneously measures and defines the actual output light source waveform 253 as the waveform value table Tm; 5. Aligning the actual wheel The difference between the waveform value table Tm and the corrected waveform value table Tr can be calculated to calculate the compensation correction value σ:=Τιη_ΤΓ; 6. Change the waveform table corresponding code Td+compensation correction value α so that σ approaches 〇; 12 1356289 Positive standard light source intensity, accurate output of the light source, overcoming component aging and drift, etc., and the calibration parameters can be traced back to the national standard laboratory; thereby, real simulation through standard light source Light source which provide different types of panels made of the amount of measuring instruments industry manufacturing the related art light source in response to the measured dynamic time reference standards. However, the above description is only exemplary embodiments of the present invention, and the scope of the invention is not limited thereto. That is to say, the equivalent changes and modifications made by the applicants in accordance with the scope of the patent application of the present invention should still fall within the scope of the patents and covers of the present invention. Please ask the reviewing committee for the examination, and pray for the right, it is the prayer to the zero. Description] The first figure shows the structure of the device of the present invention. The second figure is a schematic diagram of another embodiment of the apparatus of the present invention and a flow chart for performing brightness and clock self-correction. The third figure is a schematic diagram of the flow of the dynamic light source output correction performed by the architecture of the second embodiment. [Description of main component symbols] 10, 20, 30-dynamic light source standard device 1b 21, 31- built-in dynamic voltage waveform unit 12, 22, 32 - stable dynamic light source feedback control unit 221, 321 - digital analog converter 222 , 322-voltage to current converter 1356289 13, 23, 33 - standard light source 14, 24, 34 - light source output unit 15, 25, 35 - optical signal receiving unit 251, 351 - current voltage conversion amplifier 252, 352 - analog digital sampling Module 253, 353 - actual output light source waveform 16, 26, 36 - photoelectric conversion correction parameter unit 261, 361 - microcomputer control module 262, 362 - clock generator 邡 3, 363 - calculation unit 17 - standard Optical signal receiving unit 18 - arithmetic processing unit 29 - standard light source receiving unit 16