1364975 六、發明說明： [ϊ〇1年.03月0歹日修正替&頁 【發明所屬之技術領域】 _]本發明係有關—種可攜式電子裝置，尤指_種自動· 可揭式電子裝置之自動化控制螢幕背光源開或關之方法 [0002] [0003] 【先前技術】背光模組（Back 1 ight mrwd，、& dule)為液晶顯示器面板（LCD 咖⑴不可或缺的零級件之—，由於液晶本身不發光， 背光模組之功能即在於供應充足的亮度與分佈均句的光 源’使其能正常顯示影像。目前常見的背光㈣可分為 前光式…加Hght )與背光式（Back nght)兩種， 而背光式可依其規模的要求，以燈管的位置做分類發 展出的結構包括：側光式（Edge lighting)結構、直下 型（B〇U0m lighting)結構及中空型結構。其中以側 光式（Edge Ughting)結構的運用範圍最廣，因為發光 源為擺在侧邊之單支光源，導光板採射出成型無印刷式設計，—般常用於18对以下的中小尺寸的背光模板，其 側邊入射的光源設計，擁有輕量、薄型、窄框化、低耗 電的特色’亦為行動電話—咖）、個人數位助 理⑽）、智慧型行動電話（咖仙咖）、筆記型電 腦所採用的光源。 由於近年來行㈣訊及多媒體«之進步，許多可機帶 式電子裝置無不朝著更加便利、功能更加強大的方向發 展，且於該裝置上增加數位相機模組，以用於照相錄 影 娱樂、保存及視訊電話等用途更是_大趨勢。由於 0%14649户單編號 A0101 第3頁/共19頁 1013085651-0 1364975 101年.03月0·7日修正替換頁 可攜帶式電子裝置的發展，除了搭配單或雙鏡頭外，裝 置的尺寸也會越來越小，在功能越來越多，而體積越來 越小的情形下，勢必壓縮到電池的體積，因此為提昇電 池的使用時間，令該裝置減少不必要之電量消耗也就成 為一個很重要的課題。1364975 VI. Description of the invention: [ϊ〇1年.03月0日日改&Page [Technical field of invention] _] The present invention relates to a portable electronic device, especially _ kind of automatic Method for automatically controlling screen backlight on or off of electronic device [0002] [0003] [Background] Backlight module (Back 1 ight mrwd, & dule) is a liquid crystal display panel (LCD coffee (1) is indispensable The zero-order piece—because the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and the light source of the distributed sentence to make it display images normally. The common backlight (4) can be divided into front-light type... Plush and Back nght, and the backlight can be classified according to the size of the lamp. The structure is divided into: Edge lighting structure and direct type (B〇) U0m lighting) structure and hollow structure. Among them, the Edge Ughting structure has the widest application range, because the light source is a single light source placed on the side, and the light guide plate is formed into a non-printing design, which is commonly used for small to medium size of 18 pairs or less. Backlight template, the light source design of the side incident, has the characteristics of lightweight, thin, narrow frame, low power consumption 'also known as mobile phone-coffee, personal digital assistant (10)), smart mobile phone (Cai Xian coffee) The light source used in the notebook computer. Due to the advancement of the (four) news and multimedia in recent years, many of the tape-type electronic devices have been developed in a more convenient and more powerful manner, and digital camera modules have been added to the device for use in photo-recording entertainment. The use of, storage and video calls is a big trend. Since the 0%14649 household order number A0101 page 3 / 19 pages 1013085651-0 1364975 101. March 0. 7 modified replacement page portable electronic device development, in addition to single or double lens, the size of the device It will become smaller and smaller. In the case of more and more functions, and the volume is getting smaller and smaller, it is bound to be compressed to the volume of the battery. Therefore, in order to increase the battery life, the device can reduce unnecessary power consumption. Become a very important topic.
[0004] 因此針對可攜式電子裝置中使用率最高的零組件之液晶 顯示器面板進行省電模式設定。該傳統液晶顯示器面板 的省電模式，如第一圖所示，當電子裝置内系統啟動時 ，進入步驟slOO，判斷是否觸碰任意鍵。若是判斷未觸 碰任意鍵，進入步驟si 02，使電子裝置内部系統進入省 電模式，而關閉螢幕背光單元。若判斷觸碰任意鍵，則 進入步驟sl04，為操作模式，該螢幕背光單元持續點亮 。接著進入步驟si06，以判斷電子裝置的間置時間是否 超過門檻值；若是判斷未超過門檻值時，則回至步驟 si04中，該螢幕背光單元持續被點亮；若是判斷間置時 間超過門檻值時，則進入步驟si 02，令電子裝置内部系 統進入省電模式，以達到省電之目的。當傳統的電子裝 置進入關閉螢幕背光之省電模式後，使用者必須按任意 鍵或是觸控螢幕方能再開啟螢幕背光燈泡，這時使用者 所按的鍵或是觸控的點均可能會導致一錯誤的誤輸入， 造成使用上非常大的困擾。 [0005] 另，本國專利案之證書號1273818中揭露出一種自動調整 背光源亮度的方法，此方法利用數位相機模組偵測外界 環境的亮度，以取得周遭照明度值，並依據該值自動調 整顯示模組之背光源亮度，以達到節省行動裝置電力之 09614649#單编號 A〇101 第4頁/共19頁 1013085651-0 1364975 1101:年03月〇y日 目的。該專利之重點在於當使用者操作一行動裝置時， 此裝置之數位相機模組會不斷地偵測外界環境的亮度-， 以取得照明度值來自動調整背光源亮度。然而當使用者 專心閱讀裝置上之資訊，且超過關閉螢幕背光燈泡之時 間而無任何動作時，背光燈泡就會自行關閉，此時使用 者必須按任意鍵或觸控螢幕才能再將背光燈泡打開，這 樣一來就會干擾到使用者的閱讀行為；而持續地開啟相 機模組以探測外界環境亮度亦會造成相機模組耗電之缺 點。[0004] Therefore, the power saving mode setting is performed for the liquid crystal display panel of the component that has the highest usage rate in the portable electronic device. The power saving mode of the conventional liquid crystal display panel, as shown in the first figure, when the system in the electronic device is activated, proceeds to step s100 to determine whether to touch any key. If it is judged that the arbitrary key is not touched, the process proceeds to step si 02 to cause the internal system of the electronic device to enter the power saving mode, and the screen backlight unit is turned off. If it is judged that any key is touched, the process proceeds to step sl04, and in the operation mode, the screen backlight unit is continuously lit. Then, the process proceeds to step si06 to determine whether the interim time of the electronic device exceeds the threshold value; if it is determined that the threshold value is not exceeded, then the process returns to step si04, the backlight unit of the screen is continuously illuminated; if the intervening time exceeds the threshold value Then, the process proceeds to step si 02, and the internal system of the electronic device enters the power saving mode to achieve the purpose of power saving. When the traditional electronic device enters the power-saving mode of turning off the backlight, the user must press any key or touch screen to turn on the backlight of the screen. At this time, the button or the touch point of the user may be Leading to a wrong input, causing a very large problem. [0005] In addition, a method for automatically adjusting the brightness of a backlight is disclosed in the national patent certificate No. 1273818. The method uses a digital camera module to detect the brightness of the external environment to obtain the ambient illumination value, and automatically according to the value. Adjust the brightness of the backlight of the display module to save the power of the mobile device. 09614649# Single No. A〇101 Page 4/19 pages 1013085651-0 1364975 1101: The purpose of the year of March 〇y. The focus of this patent is that when a user operates a mobile device, the digital camera module of the device continuously detects the brightness of the external environment - to obtain the illumination value to automatically adjust the brightness of the backlight. However, when the user concentrates on reading the information on the device and does not have any action beyond the time when the backlight is turned off, the backlight will turn off by itself, and the user must press any key or touch screen to turn the backlight on again. This will interfere with the user's reading behavior. Continuously turning on the camera module to detect the brightness of the external environment will also cause the camera module to consume power.
[0006] 由此可知為達到省電目的’目前市面上可攜式電子裝置 幾乎都會設定超過間置時間門檻值，而蹯閉榮幕背光燈 泡之時間，這對於正在使用該裝置的使用者來說是一種 缺點，如何解決此問.題乃是本發明之主要課題。 【發明内容】 [0007] 本發明有鑑於傳統缺失，提出一種新技術在電子裝置的 間置時間若是超過了該門檻值’使用者仍無回應，則啟 動電子裝置上的影像擷取單元’以捕捉位於影像擷取單 元前方的一個影像’透過影像來判斷螢幕之榮幕背光單 元是否持續點亮或關閉。 [0008] 為達到上述之目的’本發明提供一應用於可攜式電子穿 置之自動化控制螢幕背光源開關裝置及方法，當電子裝 置的系統啟動時，若該微處理單元判斷未觸碰任意鍵， 則該裝置進入省電模式，且關閉螢幕背光單元。若是該 微處理單元判斷觸碰任意鍵，則進入操作模式，使該榮 幕背光單元點亮。隨後系統再次判斷該裝置的閒置時間 1013085651-0 09_户單煸號A〇101 1364975[0006] It can be seen that in order to achieve the purpose of power saving, the current portable electronic devices on the market almost always set the threshold value of the intervening time, and the time of closing the backlight to the backlight, which is for the user who is using the device. It is said that it is a shortcoming, and how to solve this problem is the main subject of the present invention. SUMMARY OF THE INVENTION [0007] In view of the conventional deficiencies, the present invention proposes a new technology that if the interim time of the electronic device exceeds the threshold value, the user still does not respond, then activates the image capturing unit on the electronic device. Capture an image located in front of the image capture unit to determine whether the screen backlight unit of the screen is continuously lit or turned off. [0008] In order to achieve the above object, the present invention provides an automatic control screen backlight switching device and method for portable electronic insertion. When the system of the electronic device is activated, if the micro processing unit determines that the touch is not touched arbitrarily The button, the device enters the power saving mode, and the screen backlight unit is turned off. If the microprocessor unit determines that any of the keys are touched, the operation mode is entered to cause the backlight backlight unit to illuminate. Then the system judges the idle time of the device again. 1013085651-0 09_单单煸号号 A〇101 1364975
[0009] [0010] [0011] [0012] 09614649^^^^ 101年.03月07日梭正替换頁 是否超過門檻值；若是判斷未超過門檻值時，該螢幕背 光單元持續被點亮，若是判斷閒置時間超過門檻值時， 則啟動影像擷取單元，進行捕捉位於該影像擷取單元前 方的一個影像。接著再將捕捉到之影像送至電子裝置内 部的微處理單元後，再送至臉部偵測技術單元中，以判 斷是否有使用者的臉部存在，若判斷該影像有臉部存在 ，該電子裝置的螢幕之螢幕背光單元將持續點亮。若判 斷影像中無臉部存在時，該系統便可以進入省電模式中 將螢幕的螢幕背光單元關閉，以減少耗電。 【實施方式】 茲有關本發明之技術内容及詳細說明，現配合圖式說明 如下： 請參閱第二圖，係本發明之電子裝置的螢幕之背光源開 或關切換控制電路方塊示意圖。如圖所示：本發明之電 子裝置的螢幕之背光源開或關切換控制電路，包括：一 微處理單元24、一影像擷取單元23、一臉部偵測技術單 元25及一螢幕背光單元26。其中， · 該微處理單元24，係與該影像擷取單元23、臉部偵測技 術單元25及螢幕背光單元26電性連結，用以運算影像擷 取單元23所送來之影像信號，由臉部偵測技術單元25作 比較後，以判斷是否持續驅動螢幕背光單元26，以及透 過微處理單元24内部之計數器（圖中未示）計數電子裝置（ 圖中未示）之間置時間。 該影像擷取單元23，係與該微處理單元24電性連結，用 以擷取使用。者臉部的影像信號。在本圖式中，該影像擷 A0101 第6頁/共19頁 1013085651-0 1364975 [F〇l-年 03 月 取單元23為一相機模組、相機或一網路攝影機之任一種 [0013]該臉部偵測技術單元25，為一唯讀記憶體（R〇M)、隨機存 取記憶體（RAM)、擴充式記憶體（Extended Memory)。 該臉部偵測技術單元25與該微處理單元24電性連結，該 臉部偵測技術單元25用以儲存臉部特徵演算法。該臉部 特徵演算法可分為下列四種：類神經網路（Neura 1 network)、色彩基礎（Color-based )、規則基礎 (Rul e-based approach)以及糖圓邊緣（El 1 ipticai edge)。其中，該類神經網路演算法必須先提供資料加以 訓練’而偵測能力高低亦與訓練資料好壞及多寡高度相 關。該色彩基礎演算法是以人類膚色在色彩空間中會群 聚於一定的範圍區域中，對膚色做統計則可建立一膚色 分佈的model供辨識使用，其優點是處理速度快，且偵測 的結果不受人臉姿勢變化影響。該規則基礎演算法是利 用'人臉部的一些特徵來判斷臉部的存在，比如假設人臉 部的顏色會比臉上面的顏色亮一些，這傭規則對於有頭 髮且膚色較淡的人臉偵測是快速而有效的，然而卻較難 判斷出光頭及膚色很黑的人臉，故此方法的優點是可以 自訂規則、較有彈性，然而規則外的狀況則難以判別。 該橢圓邊緣演算法則是假設人臉都是近似橢圓的形狀， 並且假設人臉與背景之間有一條明顯的邊緣線，此方法 簡單快速。 [〇〇14]該螢幕背光單元26，係與該微處理單元24電性連結，且 位於該電子裝置之榮幕〆側。受微處理單元運算輸出結 1013085651-0 09614649#單編號 A〇1〇1 1364975 _. . 101年.03月07日梭正替換頁 果驅動呈開或關閉。 [0015] 在微處理單元24内部計數器計數螢幕背光單元26啟動時 間超過一閒置時間門檻值時，啟動該影像擷取單元23擷 取一影像信號，該影像信號傳送至微處理單元24後，再 傳送至臉部偵測技術單元25中，經臉部偵測技術單元25 内部所儲存的演算法演算判斷擷取影像信號中包含一使 用者臉部特徵，則輸出一信號至微處理單元24，該微處 理單元24則繼續啟動螢幕背光單元26點亮螢幕。[0012] [0012] [0012] [0012] [0012] 09614649^^^^ 101. March 07, the shuttle is replacing the page whether the threshold value is exceeded; if it is judged that the threshold value is not exceeded, the backlight unit of the screen is continuously illuminated. If it is determined that the idle time exceeds the threshold value, the image capturing unit is activated to capture an image located in front of the image capturing unit. Then, the captured image is sent to the micro processing unit inside the electronic device, and then sent to the face detection technology unit to determine whether there is a user's face. If it is determined that the image has a face, the electronic The screen backlight unit of the device's screen will remain lit. If it is determined that no face is present in the image, the system can enter the power saving mode to turn off the screen backlight unit of the screen to reduce power consumption. [Embodiment] The technical content and detailed description of the present invention will now be described with reference to the following drawings: Please refer to the second figure, which is a block diagram of a backlight on or off switching control circuit of the screen of the electronic device of the present invention. As shown in the figure, the backlight on/off switching control circuit of the screen of the electronic device of the present invention comprises: a micro processing unit 24, an image capturing unit 23, a face detecting technology unit 25 and a screen backlight unit. 26. The micro-processing unit 24 is electrically connected to the image capturing unit 23, the face detecting technology unit 25, and the screen backlight unit 26, and is used to calculate the image signal sent by the image capturing unit 23. After the face detection technology unit 25 compares, it is determined whether to continuously drive the screen backlight unit 26, and the time between the electronic devices (not shown) is counted through a counter (not shown) inside the micro processing unit 24. The image capturing unit 23 is electrically connected to the micro processing unit 24 for use. The image signal of the face. In the figure, the image 撷A0101 is 6th/19 pages 1013085651-0 1364975 [F〇l-Year 03 is a camera module, a camera or a network camera [0013] The face detection technology unit 25 is a read only memory (R〇M), a random access memory (RAM), and an extended memory. The face detection technology unit 25 is electrically coupled to the micro processing unit 24, and the face detection technology unit 25 is configured to store a facial feature algorithm. The facial feature algorithm can be divided into the following four types: Neura 1 network, Color-based, Rul e-based approach, and El 1 ipticai edge. . Among them, this kind of neural network algorithm must first provide information for training', and the detection ability is also related to the quality and quantity of training materials. The color basic algorithm is to collect human skin color in a certain range of regions in the color space, and to calculate the skin color to establish a skin color distribution model for identification, which has the advantages of fast processing speed and detection. The result is not affected by changes in face posture. The rule-based algorithm uses some features of the human face to judge the presence of the face, for example, assuming that the color of the face is brighter than the color above the face, which is for a face with a lighter and lighter skin tone. Detection is fast and effective, but it is difficult to judge the face with dark head and dark skin. Therefore, the advantage of this method is that it can customize the rules and be more flexible. However, the situation outside the rules is difficult to discriminate. The elliptical edge algorithm assumes that the faces are all approximately elliptical, and that there is a distinct edge line between the face and the background. This method is simple and fast. [14] The screen backlight unit 26 is electrically connected to the micro processing unit 24 and is located on the side of the screen of the electronic device. By micro-processing unit operation output knot 1013085651-0 09614649# single number A〇1〇1 1364975 _. . 101 years. March 07th shuttle replacement page drive is on or off. [0015] When the internal counter of the micro-processing unit 24 counts the screen backlight unit 26 to exceed the idle time threshold, the image capturing unit 23 is activated to capture an image signal, and the image signal is transmitted to the micro processing unit 24, and then The signal is sent to the face detection technology unit 25, and the algorithm calculus stored in the face detection technology unit 25 determines that the captured image signal includes a user facial feature, and outputs a signal to the micro processing unit 24, The microprocessor unit 24 continues to activate the screen backlight unit 26 to illuminate the screen.
[0016] 請參閱第三圖，係本發明之電子裝置的螢幕之背光源開 或關切換控制流程示意圖。如圖所示：當電子裝置（圖中 未示）内系統啟動時，首先進入步驟100，判斷是否觸碰 任意鍵。若是判斷未觸碰任意鍵，進入步驟102，使電子 裝置内部系統進入省電模式，而關閉螢幕背光單元。若 是判斷觸碰任意鍵，則進入步驟104，為操作模式，該螢 幕背光單元持續點亮。則再進入步驟106，以判斷電子裝 置的間置時間是否超過門檻值；若是判斷未超過門檻值 時，則回至步驟104之操作模式，使該螢幕背光單元持續 被點亮；若是判斷閒置時間超過門檻值時，則進入步驟 108，以啟動影像擷取單元，進行捕捉位於該影像擷取單 元前方的一個影像。接著再將捕捉到之影像（圖像資料） 送至電子裝置内部的微處理單元後，再送至臉部偵測技 術單元中，如步驟110。再進入步驟112,判斷是否有使 用者（圖中未示）的臉部特徵存在，若判斷該影像有臉部 特徵存在，則回至步驟104之操作模式中，使該電子裝置 的螢幕之螢幕背光單元將持續點亮。反之，若判斷影像 09614649严编請01 第8頁/共19頁 1013085651-0 [ιοί年03与〇〉日俊正_頁 無臉部特徵存在時’則回至步驟102中，該系統便可以進 入省電模式中將螢幕的螢幕背光單元關閉，以減少耗電 4錢第四®，係本發明之使用者正在使用可携式電子 裝置不意圖。如圖所示：本發明之可攜式電子裝置之螢 幕背光開關，當使用者1在可擴式電子裝置（為行動電話 ’個人數位助理，或是筆記型電腦）2的操作按鍵21上輸 入個人（一週行程表）相關資料時，在資料輪入過程中， 使用者1突然記不起某一天的行程内容’造成電子裝置2 處於閒置狀態’此時該電子裝置2内部系統會不斯地累計 系統之間置時間，並判斷該間置時間是否超過了預先設 &關閉榮幕22的螢幕背光單元（圖中未示）時間。當尚未 達到門植值時使用者1就已有回應，則會回到操作模式中 6亥營幕背光單元將持續點亮（開啟）；相反地，若是超過[0016] Please refer to the third figure, which is a schematic diagram of a backlight on/off switching control flow of the screen of the electronic device of the present invention. As shown in the figure: When the system is started in the electronic device (not shown), first proceed to step 100 to determine whether to touch any key. If it is determined that the arbitrary key is not touched, the process proceeds to step 102 where the internal system of the electronic device enters the power saving mode and the backlight unit is turned off. If it is judged that any key is touched, the process proceeds to step 104 where the backlight unit of the screen is continuously lit. Then, the process proceeds to step 106 to determine whether the interleaving time of the electronic device exceeds the threshold value; if it is determined that the threshold value is not exceeded, then return to the operation mode of step 104, so that the backlight unit of the screen is continuously illuminated; if the idle time is determined When the threshold value is exceeded, the process proceeds to step 108 to activate the image capturing unit to capture an image located in front of the image capturing unit. Then, the captured image (image data) is sent to the micro processing unit inside the electronic device, and then sent to the face detection technology unit, as shown in step 110. Then, in step 112, it is determined whether there is a facial feature of the user (not shown). If it is determined that the image has a facial feature, return to the operation mode of step 104 to make the screen of the electronic device screen. The backlight unit will illuminate continuously. On the other hand, if it is judged that the image 09614649 is strictly edited, please refer to page 8 of 19 pages, 10,310,565,651,0, [much of the year, and if there is no face feature], then the process returns to step 102, and the system can enter In the power saving mode, the screen backlight unit of the screen is turned off to reduce the power consumption of the fourth meter, and the user of the present invention is not using the portable electronic device. As shown in the figure, the screen backlight switch of the portable electronic device of the present invention is input when the user 1 inputs the operation button 21 of the expandable electronic device (for the mobile phone 'personal digital assistant or notebook computer') 2 When the individual (one-week schedule) related information, during the data round-in process, the user 1 suddenly cannot remember the content of the trip of one day 'cause the electronic device 2 is idle'. At this time, the internal system of the electronic device 2 will not Accumulate the time between the systems, and determine whether the intervening time exceeds the time of the screen backlight unit (not shown) of the pre-set & When the user 1 has already responded to the threshold value, it will return to the operation mode. The 6-camera backlight unit will continue to light up (on); conversely, if it exceeds
了該門檀值使用者1仍無回應，則啟動電子裝置2上與螢 幕22相鄰或同方向之影像擷取單元23 ，且進行捕捉位於 景々像操取單元23前方的一個影像，接著再將捕捉到之影 像（圖像資料）送至電子裝置2内部系統運算。若是判斷該 I像有臉部特徵11存在’則電子裝置2的螢幕22之螢幕背 光單元將持續點亮。反之系統運算後，判斷影像無臉部 特徵11存在時，則系統便可以進入省電模式中將螢幕22 的營幕背光單元關閉，以減少耗電。 [0018] [0019] 〇%U649产單編號 進—步，在於該臉部偵測技術單元25，可被儲存在微處 理單tl24内部的記憶體的軟體單元所取代。 上述僅為本發明之較佳實施例而已，旅非用來限定本發 A0101 第 9 頁 / 共 19 頁 1013085651-0 1364975 101年.03月of日梭正替換頁 明實施之範圍。即凡依本發明申請專利範圍所做的均等 變化與修飾，皆為本發明專利範圍所涵蓋。 【圖式簡單說明】 [0020] 第一圖，係傳統可攜式電子裝置省電模式控制流程示意 圖。 [0021] 第二圖，係本發明之電子裝置的螢幕之背光源開或關切 換控制電路方塊示意圖。 [0022] 第三圖，係本發明之電子裝置的螢幕之背光源開或關切 換控制流程示意圖。 [0023] 第四圖，係本發明之使用者正在使用可攜式電子裝置示 意圖。 【主要元件符號說明】After the door user 1 still has no response, the image capturing unit 23 adjacent to or in the same direction of the screen 22 is activated on the electronic device 2, and an image captured in front of the image capturing unit 23 is captured, and then The captured image (image data) is sent to the internal system operation of the electronic device 2. If it is judged that the face image 11 is present, the screen backlight unit of the screen 22 of the electronic device 2 will continue to light. On the contrary, after the system operation determines that the image has no face feature 11, the system can enter the power saving mode to turn off the camping backlight unit of the screen 22 to reduce power consumption. [0019] The U%U649 production number is advanced in that the face detection technology unit 25 can be replaced by a software unit of the memory stored in the micro processing unit tl24. The above is only a preferred embodiment of the present invention, and the travel is not intended to limit the scope of the implementation. A0101 Page 9 of 19 1013085651-0 1364975 101.03. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0020] The first figure is a schematic diagram of a power saving mode control flow of a conventional portable electronic device. [0021] The second figure is a block diagram of a backlight on or off control circuit of the screen of the electronic device of the present invention. [0022] The third figure is a schematic diagram of a backlight on or off control circuit of the screen of the electronic device of the present invention. [0023] In the fourth diagram, the user of the present invention is using a portable electronic device for illustration. [Main component symbol description]
[0024] 習知 [0025] 步驟si 00〜sl 06 [0026] 本發明： [0027] 步驟100〜112 [0028] 使用者1 [0029] 臉部特徵11 [0030] 電子裝置2 [0031] 操作按鍵21 [0032] 螢幕22 09614649户單編號 A0101 第10頁/共19頁 1013085651-0 1364975 [0033] 影像擷取單元23 [0034] 微處理單元24 [0035] 臉部偵測技術單元25 [0036] 螢幕背光單元26 .101年03月的日核正_頁[0025] Steps [0025] Steps si 00~sl 06 [0026] The present invention: [0027] Steps 100 to 112 [0028] User 1 [0029] Facial Features 11 [0030] Electronic Device 2 [0031] Operation Button 21 [0032] Screen 22 09614649 Order No. A0101 Page 10 / Total 19 Page 1013085651-0 1364975 [0033] Image Capture Unit 23 [0034] Micro Processing Unit 24 [0035] Face Detection Technology Unit 25 [0036] ] Screen backlight unit 26 .101 March, the Japanese nuclear positive _ page
09614649^^^^ A〇101 第11頁/共19頁 1013085651-009614649^^^^ A〇101 Page 11 of 19 1013085651-0