201250366 六、發明說明： 【發明所屬之技術領域】 本發明細有關於一種電子裝置與其控制方法，尤指一種可藉由 偵測光線的特徵來調整輸出光源之電子裝置與其控制方法。 【先前技術】 隨著科技的進步，微型投影機（piC〇pr〇ject〇r)的發展也日益 興盛，而最主要的光機系統都採取紅、綠、藍（RGB)等3個發光 二極體（light emitting diode ’ LED)發光並混色的機制，進而投射 出我們所想要的晝面。然而為了投影機的攜帶方便，在微型投影機 的設計中通常將轉接器（adaptor)與視頻圖像陣列（VGA)介面都 移除，完全只透過電腦的通用序列匯排流（USB)介面來傳輸晝面 與供電，因此又稱為USB投影機。 因此’大多數的USB投影機的亮度與色度的表現皆受限於輸入 功率的大小，然而，由於各家廠商USB接頭的供電電壓不盡相同， 因此會同一台微型投影機在不同的機器上會投影出不同的亮度與色 度，造成晝面有掉色或色偏的情況，嚴重一點甚至晝面會產生閃爍 抖動（flick)。 因此，如何最佳化電源設定與顏色校正，實是本設計領域的重要 課題之一。 201250366 【發明内容】 本發明的主要目的之一在於提出一種電子裝置與其控制方法，以 解決上述之問題。 根據本發明一實施例，揭露一種電子裝置包含有一發光單元、一 光感測器以及一控制單元。該發光單元係用來產生一光線。該光感 測器係用來偵測該光線之一特徵值。該控制單元耦接於該光感測 器’用來根據該特徵值來驅動該發光單元發出光線。 根據本發明一實施例，揭露一種控制一電子裝置的方法包含有： 產生一光線，偵測該光線之一特徵值；以及根據該特徵值來驅動該 電子裝置之一發光單元發出光線。 相較於習知技術，本發明之電子裝置利職測光線的特徵來調整 輸出光源。如此-來可以最佳化電源設定與顏色校正。 【實施方式】 一在說明書及後續的申請專利範圍當中使用了某些詞囊來指稱特 ^的几件所屬賴巾具有通常知識者應可轉，硬體製造商可能 =不=名贿射同樣的元件。本咖書及後續的帽專利範 ==異來作為區分元件的方式，而是以元件在功能上 異來作賴物1 °蝴輯賴輯輸中所提 201250366 及的「包含」係為一開放式的用語，故應解釋成「包含但不限定於」。 另外，「耦接」一詞在此係包含任何直接及間接的電氣連接手段。因 此，若文中描述一第一裝置耦接於一第二裝置，則代表該第—裝置 可直接電氣連接於該第二裝置，或透過其他裝置或連接手段間接地 電氣連接至該第二裝置。 請參考第1圖，第1圖係為本發明電子裝置1〇〇之一第一實施 例之功能方塊圖。如第1圖所示，電子裝置1〇〇係包含有一發光單 元120、一光感測器130以及一控制單元11〇。發光單元12〇，可以 是-或多個（例如紅、綠、藍等3個）發光二極體（lightemitting diode ’ LED)，用來魅―光線，細發光單元12()亦可以是其他 種類的光源，本發日股不以此為關條件。光感測器m係用來偵 測=線之-特徵值，簡徵值可以為該級之波形、鮮、振幅、 能量密度等，然而並不以此為限制條件。控制單元11〇_接於光 感測器130 ’用來根據該特徵值來驅動發光單元l2Q發出光線。 電子裝置100之詳細操作說明如下，請參考第2圖，第2圖係 為本心月電子裝置200之-第-實施例之功能方塊圖。如第2圖所 示，第2圖之電子裝置的架構與第丨圖之電子裝置觸類似， ，者不同之處在於電子裝置中之控制單元⑽另包含有一記憶 單元211比較單元212、一決定單元213以及-驅動單元η4。 記憶單元211係用來儲存一白色光模板，亦即在沒有色偏的情況下 (正常供電時）白色光之一標準值，在本實施例中，該標準值係為 201250366 在正常供電的情況下由發光單元220所發出之一白光樣板（對於8 位元色階之紅'綠、藍發光二極體混色之光線來說，該白色光模板 係為255，255，255)經光感測器220所感測到之一未經衰減的方 波波形。比較單元212耦接於光感測器220與記憶單元211，用來 比較該白色光模板（未經衰減的方波波形，如第3A圖所示）與該 特徵值（所量測到的白光波形，如第3B圖所示），以產生一比較結 果RST。從第3B圖可看出，目前的設定使藍光發光二極體無法正 常發光，因此整體投影效果會產生色偏現象。決定單元213轉接於 比較單元212’用來根據比較結自儲存於記憶單元211中 之複數個顏色校正設定組態CONFIG一1〜N中選取一校正設定組 態’顏色％c正設定組態CONPIG—1〜N係為依據不同的輪入電壓所 預先優化之輸丨電壓設定，亦即娜該輸$龍設定可以在所對應 的輸入電壓下達到最佳_色校正結果。驅鱗元214雛於決定 单τ〇213 ’用來根據該所選取之校正設定組態來驅動發光單元22〇 發出光線。 值得主思的疋’本發明之精神在於利用情測光線的特徵來調整 輸出光源，_波形_倾為本發明之—難實關，並不以此 為本發明之限制條件，本領域具有通達技藝者當可據以實施或變 化，皆應>1本發明之鱗，舉例來說，在本發明之另_實施例中， 亦可透過侧光線之能餘度來實縣發明，只要光㈣器之種類 能配合即可》 201250366 電子裝置100的運作方式可進一步歸納為一控制流程4〇。姓泉 考第4圖，第4圖為本發明電子裝置100之一控制方法流程圖:/ 包含（但不侷限於）以下的步驟(請注意，假若可獲得實質上相同的 結果，則這些步驟並不一定要遵照第4圖所示的執行次序來執行广 步驟S400 ·開始。 步驟S410 :產生一光線。 步驟S420 :偵測該光線之一特徵值。 步驟S·:根據雜徵絲鶴發光單元⑽發出光線 步驟S440:結束。 X 、’、 —私40係為電子裝置1〇〇的運作方式，第*圖 驟搭配第丨_示之各元件即可了解其相關運作 可參考前述，為簡潔起見，於此不再贅述。^。兄月及邊 相似的，電子裝置2〇〇的運 程5。。請參考第5圖，第5圖 圃弟5圖為本發明電子聚置 法流程圖，其包含（但礙於）町的 之另；^ 實質上相同的結果’則這些步驟並不-定要遵:第：： 次序來執行）： ，、弟5圖所不的執. 步驟S500 :開始。 步驟S510··產生一光線。 201250366 步驟S520 :偵測該光線之一特徵值。 步驟S530 :儲存一白色光模板。 步驟S54G·比較該白色光模板與該特徵值，以產生—比較結果。 步驟S55G .若該比較結果指示該特徵值正確，執行步驟§58〇， 否則執行步驟S560。 步驟S560 :根據該比較結果而_存於記憶單元2ιι中之複數 個校正设疋組態中選取一校正設定組態。 步驟S57_據該校正設定組態來驅動發光單元创發出光線。 步驟S580 .投影。 控制流程5〇係為電子裝置2〇〇的運作方式，第5圖所示之各步 驟搭配第2騎示之各元件即可了解其相_作，詳細說明及變^匕 可參考前述’為簡潔起見，於此不再贅述。 此外，電子裝置200 #包含有-重置單元24〇，搞接於控制單 21 〇，用來產生-重置訊號·ΕΤ來啟動―重置流程6()。嗜 6圖’第6圖為本發明電子裝置⑽之-重置方法流程圖，=心 (但不侷限於）以下的步驟(請注意，假若可獲得實質上、匕、 果，則這些步驟並不-定要遵照第6圖所示的執行次序來 =^結 步驟S600 :產生一重置訊號。 步驟S610 :產生·一光線。 步驟S620 :偵測該光線之一特徵值。 I； 201250366 步驟S630 :儲存一白色光模板β 步驟S640 :比較該白色光模板與該特徵值，以產生一比較社果 步驟S650 :若概較細旨補彳_正確，執行步驟遞 否則執行步驟S660。 步驟S_ :根據該比較結果來自儲存於記憶單元叫中之複彰 個校正設定組態中選取一校正設定組態。 步驟漏:根據職正設雜絲驅動發光單元22 步驟S680:投影。 重置流程60係為電子裝置的重置方式，第6圖所示之各步 驟搭配第2圖所示之各元件盥第5圖 谷兀件與第5圖所述之步驟即可了·_運 作，抽及變化可參考前述，觸麵見，於此不再資述。 上述錢程之步驟僅為本發騎舉可行的實施例，麟限制本發 月的限制條件’且林違縣發明之鱗的航下，馳方法可另 匕含其他种辭驟或者可職個步驟合併成單—步驟，以做· 綜上職’本發明提供―種可最她錢奴與校正的電子 、置與其控制方法’利用伽光線的特徵來調整輸出光源，以避免 不同的輸人輕而造成晝面掉色或色偏。由於現今各家廠商咖 $的供電電壓不盡相同，因此會翻投影機在不同的機器上會投 不同的&度與色度’為了能提供—種通用的調校機制，如此一 201250366 來，不但可以避免晝面產生閃爍抖動，還可以對使用者提供最佳化 電源設定與顏色校正。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍 所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖為本發明實施例電子裝置之一第一實施例之功能方塊 圖。 第2圖為本發明實施例電子裝置之一第一實施例之功能方塊 圖。 第3圖為一光感測器所偵測到的光波形之一示意圖。 第4圖為本發明電子裝置之一控制方法流程圖。 第5圖為本發明電子裝置之另一控制方法流程圖。 第6圖為本發明電子裝置之一重置方法流程圖。 【主要元件符號說明】 100、200 電子裝置 110 、 210 控制單元 120、220 發光單元 130 > 230 光感測器 211 記憶單元 212 比較單元 201250366 213 決定單元 214 驅動單元 240 重置單元201250366 VI. Description of the Invention: [Technical Field] The present invention relates to an electronic device and a control method thereof, and more particularly to an electronic device and a control method thereof for adjusting an output light source by detecting characteristics of light. [Prior Art] With the advancement of technology, the development of pico projectors (piC〇pr〇ject〇r) is also growing, and the most important optomechanical systems adopt red, green, blue (RGB) and other three illuminations. The mechanism by which the light emitting diode 'LED' illuminates and mixes colors, which in turn projects the surface we want. However, in order to facilitate the carrying of the projector, the adapter (adaptor) and the video image array (VGA) interface are usually removed in the design of the micro projector, and only through the computer's universal serial bus (USB) interface. It is used to transfer the surface and power, so it is also called USB projector. Therefore, the brightness and chromaticity of most USB projectors are limited by the input power. However, since the power supply voltage of each manufacturer's USB connector is not the same, the same micro projector will be on different machines. Different brightness and chromaticity will be projected on the surface, causing the surface to be discolored or color-shifted. Seriously, even the surface will produce flickering (flick). Therefore, how to optimize power supply setting and color correction is one of the important topics in this design field. 201250366 SUMMARY OF THE INVENTION One of the main objects of the present invention is to provide an electronic device and a control method thereof to solve the above problems. According to an embodiment of the invention, an electronic device includes a light emitting unit, a light sensor, and a control unit. The illumination unit is used to generate a light. The light sensor is used to detect a characteristic value of the light. The control unit is coupled to the photo sensor </ RTI> for driving the illuminating unit to emit light according to the characteristic value. According to an embodiment of the invention, a method for controlling an electronic device includes: generating a light, detecting a characteristic value of the light; and driving the light emitting unit of the electronic device to emit light according to the characteristic value. Compared to the prior art, the electronic device of the present invention utilizes the characteristics of the light to adjust the output light source. This way - you can optimize power settings and color correction. [Embodiment] In the specification and the subsequent patent application scope, some words are used to refer to a number of pieces of the belongings that have the usual knowledge, and the hardware manufacturer may = not = the name of the bribe Components. This coffee book and the subsequent cap patent model == different as the way to distinguish the components, but the components in the function of the difference in the 1 ° butterfly series of the collection of 201250366 and the "include" system is one Open-ended terms should be interpreted as "including but not limited to". In addition, the term "coupled" is used herein to include any direct and indirect electrical connection. Therefore, if a first device is coupled to a second device, it is meant that the first device can be directly electrically connected to the second device or indirectly electrically connected to the second device through other devices or connection means. Please refer to Fig. 1, which is a functional block diagram of a first embodiment of an electronic device 1 of the present invention. As shown in Fig. 1, the electronic device 1 includes a light emitting unit 120, a light sensor 130, and a control unit 11A. The light-emitting unit 12A may be - or a plurality of (for example, three of red, green, and blue) light emitting diodes (LEDs) for enchanting light, and the fine light emitting unit 12 () may be other types. The source of the light, the Japanese stocks are not the conditions. The photo sensor m is used to detect the characteristic value of the line, and the simplification value may be the waveform, freshness, amplitude, energy density, etc. of the level, but is not limited thereto. The control unit 11A is connected to the photo sensor 130' for driving the light emitting unit 12Q to emit light according to the characteristic value. The detailed operation of the electronic device 100 is as follows. Please refer to FIG. 2, which is a functional block diagram of the first embodiment of the present invention. As shown in FIG. 2, the architecture of the electronic device of FIG. 2 is similar to that of the electronic device of FIG. 2, except that the control unit (10) in the electronic device further includes a memory unit 211 comparison unit 212, a decision Unit 213 and - drive unit η4. The memory unit 211 is used to store a white light template, that is, a standard value of white light in the case of no color shift (normal power supply). In the present embodiment, the standard value is 201250366 in the case of normal power supply. A white light template emitted by the light-emitting unit 220 (the white light template is 255, 255, 255 for the 8-bit color gradation red 'green, blue light-emitting diode mixed light ray) One of the un-attenuated square wave waveforms is sensed by the device 220. The comparison unit 212 is coupled to the photo sensor 220 and the memory unit 211 for comparing the white light template (the un-attenuated square wave waveform, as shown in FIG. 3A) with the characteristic value (the measured white light) The waveform, as shown in Figure 3B, is used to produce a comparison result RST. As can be seen from Fig. 3B, the current setting makes the blue light-emitting diodes unable to emit light normally, so the overall projection effect produces a color shift phenomenon. The determining unit 213 is connected to the comparing unit 212' for selecting a calibration setting configuration from the plurality of color correction setting configurations CONFIG-1 to N stored in the memory unit 211 according to the comparison node. The CONPIG-1~N series is a pre-optimized input voltage setting according to different wheeling voltages, that is, the input of the $ dragon setting can achieve the best _ color correction result under the corresponding input voltage. The squaring element 214 is used to determine that the single τ 〇 213 ' is used to drive the illumination unit 22 发出 to emit light according to the selected calibration setting configuration. The spirit of the present invention is to use the characteristics of the emotional light to adjust the output light source, and the waveform is a difficult condition for the present invention, and is not a limitation of the present invention. The skilled person should implement the invention according to the scale of the present invention. For example, in another embodiment of the present invention, the invention can be invented through the energy balance of the side light, as long as the light is (4) The type of device can be matched. 201250366 The operation mode of the electronic device 100 can be further summarized into a control flow. 4, FIG. 4 is a flow chart of a control method of one of the electronic devices 100 of the present invention: / including (but not limited to) the following steps (note that if substantially the same result is obtained, these steps It is not necessary to perform the wide step S400. Start in accordance with the execution order shown in Fig. 4. Step S410: Generate a light ray. Step S420: Detect one of the eigenvalues of the light. Step S:: illuminate according to the miscellaneous The unit (10) emits light step S440: the end. X, ', - private 40 series is the operation mode of the electronic device 1 ,, the first figure is matched with the components of the first __ can be understood that the relevant operation can refer to the foregoing, For the sake of brevity, I won't go into details here. ^. Brother and moon are similar, the electronic device 2〇〇's fortune 5. Please refer to Figure 5, Figure 5, Figure 5 is the electronic assembly process of the present invention. Figure, which contains (but hinders) the other of the town; ^ substantially the same result 'these steps are not - must be followed: the:: order to execute): ,, brother 5, the implementation of the steps. S500: Start. Step S510·· generates a light. 201250366 Step S520: Detect one of the characteristic values of the light. Step S530: Store a white light template. Step S54G: Compare the white light template with the feature value to generate a comparison result. Step S55G. If the comparison result indicates that the feature value is correct, step §58〇 is performed, otherwise step S560 is performed. Step S560: Select a calibration setting configuration from the plurality of calibration settings stored in the memory unit 2 ι according to the comparison result. Step S57_ according to the calibration setting configuration, the illumination unit is driven to emit light. Step S580. Projection. The control flow 5 is the operation mode of the electronic device 2,, and the steps shown in FIG. 5 can be used together with the components of the second riding display to understand the phase, and the detailed description and the change can be referred to the above. For the sake of brevity, it will not be repeated here. In addition, the electronic device 200 # includes a reset unit 24A, which is connected to the control unit 21 〇 to generate a reset signal ΕΤ to start the reset process 6 (). Figure 6 is a flow chart of the resetting method of the electronic device (10) of the present invention, = (but not limited to) the following steps (note that if substantial, 匕, fruit are available, then these steps are It is not necessary to follow the execution order shown in Fig. 6 = step S600: generating a reset signal. Step S610: generating a light. Step S620: detecting a characteristic value of the light. I; 201250366 S630: storing a white light template β. Step S640: Comparing the white light template with the feature value to generate a comparison step S650: if the summary is correct, the step is executed, otherwise step S660 is performed. Step S_ According to the comparison result, a calibration setting configuration is selected from the reconfirmed calibration setting configuration stored in the memory unit. Step Leak: According to the job, the moiré driving illumination unit 22 is performed. Step S680: Projection. It is a reset mode of the electronic device, and the steps shown in Fig. 6 are matched with the components shown in Fig. 2, the steps described in Fig. 5 and the figure shown in Fig. 5. Change can refer to the above, see the contact, here is not The above-mentioned steps of the money course are only feasible examples of the riding of the hair, and Lin limits the restrictions of the month of the month, and the method of the forest invented by Lin Bianxian can be carried out with other kinds of words or A step-by-step process can be combined into a single-step to do the above-mentioned work. The present invention provides a technique for adjusting the output light source by using the characteristics of the gamma ray to avoid the difference. The input is light and the surface is faded or the color is biased. Since the supply voltages of the manufacturers are not the same, the projectors will be cast differently on different machines. Providing a general adjustment mechanism, such as 201250366, not only can avoid flickering of the facet, but also can provide optimal power setting and color correction for the user. The above is only the preferred embodiment of the present invention. The average variation and modification of the scope of the present invention should be within the scope of the present invention. [FIG. 1] FIG. 1 is a first embodiment of an electronic device according to an embodiment of the present invention. Figure 2 is a functional block diagram of a first embodiment of an electronic device according to an embodiment of the present invention. Figure 3 is a schematic diagram of a light waveform detected by a light sensor. FIG. 5 is a flow chart of another control method of an electronic device according to the present invention. FIG. 6 is a flow chart of a reset method of an electronic device according to the present invention. 200 electronic device 110, 210 control unit 120, 220 illumination unit 130 > 230 photo sensor 211 memory unit 212 comparison unit 201250366 213 decision unit 214 drive unit 240 reset unit