1273818 1647Itwf doc/g 九、發明說明： 【發明所屬之技術領域】 本發明是錢於—種輕背先》亮㈣妓，且特別 進 相機模組感測周遭環境之亮度 向凋整月光源焭度的方法。 【先前技術】1273818 1647Itwf doc/g Nine, the invention description: [Technical field of the invention] The invention is a kind of light-backed "light" (four) 妓, and particularly into the camera module to sense the brightness of the surrounding environment to the full moon light source 焭Degree method. [Prior Art]
隨^媒體產業的曰益發達，行動電話(_bile =one)、數位相機(dlgltal camera)、智慧型行動電話（s_ one )、口袋電細（p〇cket pc )、個人數位助理（pda )、 及手機等數位化行動裝置無不朝著更加便利、更多功能、、 更力:美觀的方向發展。其中，顯示模組可以說是上述品 中最為重要的輸出設備，產品中的各種資訊可以透 呈現在使用者眼前。 因此，近年來，新興的顯示模組以液晶顯示器為其主 流。液晶顯示器具有高晝質、空間利用效率佳、低消耗功 率、無輻射等優越特性。在液晶顯示器中的液態晶體分子 本身並無發光特性，所以在液晶顯示器下方通常需要提供 一背光源。藉由背光源提供液晶顯示器面板所需之光源， 使得液晶顯示器面板獲得足夠之亮度，達到高晝質的顯示 效果。 現今有越來越多的行動裝置為了更吸引消費者的注 意’強調多功能性及娛樂性，都會加裝數位相機模組，用 於娛樂、照相、保存以及其他用途，並且搭配彩色的液晶 顯示器成為標準配備。但是，此彩色的液晶顯示器中的背 光源所消耗掉的電力卻佔了總耗電力極大的成分。因此， 5 1273818 16471twf.doc/g 造成行動裝置的待機 【發明内容】 縮知'及耗電量提高的缺點。 本發明的目的就日 的方法，其係使用疋提供一種自動調整背光源亮度 環境的亮度，可裝置中的數位相機模組來感測所在 率。 名黾力並使得背光源亮度的調整更有效 為達到上述目的，太 度的方法，適用於行動出一種自動調整背光源亮 及數位相機模組。而本^明^行動裝置具有顯示模組以 M m ^ ^ 本务月之方法包括了下列步驟，首先， 牙J用數位相機模組偵測上 度值。接著，行動壯^界f兄的党度’以取得周遭照明 依知、本發明的較佳實施例所述，上述之行動裝置依據 =明^動調整顯示模組之背光:= h匕括百先取件顯示模組所輸出之背光調整訊號，而背 1 周整訊號可例如是_脈寬調變值（PWMValue)。另外， =稭由上述之周遭照明度值，可求得對應之感測協定訊 k，且感測協定訊號之格式與背光調整訊號之格式兩者相 同。此時，依據前述之感測協定訊號與背光調整訊號來求 得亮度調節值，行動裝置就依據此亮度調節值，自動調整 該顯示模組之背光源亮度。 依知本發明的較佳實施例所述之自動調整背光源亮 度的方法更包括當環境的亮度變暗時，將顯示模組之背光 源亮度調暗。或當環境的亮度變亮時，將顯示模組之背光 6 1273818 16471twf.doc/g 源冗度调免。 依照本發明的較佳實施例所述，上述之數位相機模組 包括影像感測單元，且此影像感測單元為電荷耦合元件 (CCD)以及互補式金氧半導體（CMOS)兩者其中之一。 在較佳情形下，本發明所適用的行動裝置為行動電話 或是個人數位助理。 本發明因採用行動裝置中的數位相機模組來感測所 φ 在環境的亮度，進而調整背光源亮度。因此能更有效率的 節省行動裝置的電力損耗，加長使用電池的時間，同時也 可獲得良好的視覺效果。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 、^ 【實施方式】 圖1係繪示依照本發明之一較佳實施例之背光源亮度 Φ 之控制裝置方塊圖。本發明所提供的控制裝置，可應用於 行動裝置，尤其是行動電話以及個人數位助理。 在本實施例中，中央處理單元110係分別耦接顯示模 組120、數位相機模組13〇和儲存模組14〇。其中顯示模組 120使用的是液晶顯示器，並且包括一背光源16〇,可提供With the development of the media industry, mobile phones (_bile = one), digital cameras (dlgltal camera), smart mobile phones (s_one), pockets (p〇cket pc), personal digital assistants (pda), And digital mobile devices such as mobile phones are all moving toward more convenient, more functional, and more powerful: beautiful directions. Among them, the display module can be said to be the most important output device in the above products, and various information in the product can be presented in front of the user. Therefore, in recent years, emerging display modules have been dominated by liquid crystal displays. The liquid crystal display has superior characteristics such as high enamel quality, good space utilization efficiency, low power consumption, and no radiation. The liquid crystal molecules in the liquid crystal display have no luminescent properties per se, so it is usually necessary to provide a backlight under the liquid crystal display. By providing a light source required for the liquid crystal display panel by the backlight, the liquid crystal display panel can obtain sufficient brightness to achieve a high-quality display effect. Nowadays, more and more mobile devices are designed to attract more consumers' attention. To emphasize versatility and entertainment, digital camera modules will be installed for entertainment, photography, storage and other purposes, and with color LCD monitors. Become a standard equipment. However, the power consumed by the backlight in this color liquid crystal display accounts for a large amount of power. Therefore, 5 1273818 16471twf.doc/g causes the standby of the mobile device. [Disclosed] The shortcomings of 'reduction' and power consumption increase. The object of the present invention is to provide a method for automatically adjusting the brightness of a backlight brightness environment, and a digital camera module in the device to sense the rate. The name and power of the backlight are more effective. To achieve the above objectives, the method is too versatile and suitable for action to automatically adjust the backlight and digital camera module. The method of the present invention has a display module that includes the following steps in the method of M m ^ ^. The first step is to detect the upper value by the digital camera module. Then, in accordance with the preferred embodiment of the present invention, the mobile device is configured to adjust the backlight of the display module according to the preferred embodiment of the present invention: = h The backlight adjustment signal outputted by the module is displayed first, and the back 1 week signal can be, for example, a pulse width modulation value (PWMValue). In addition, = straw can be obtained from the above-mentioned ambient illumination value, and the corresponding sensing protocol signal is obtained, and the format of the sensing protocol signal is the same as the format of the backlight adjustment signal. At this time, the brightness adjustment value is obtained according to the sensing protocol signal and the backlight adjustment signal, and the mobile device automatically adjusts the backlight brightness of the display module according to the brightness adjustment value. The method for automatically adjusting the brightness of a backlight according to a preferred embodiment of the present invention further includes dimming the brightness of the backlight of the display module when the brightness of the environment is dimmed. Or when the brightness of the environment is bright, the backlight of the module will be displayed. 6 1273818 16471twf.doc/g Source redundancy is removed. According to a preferred embodiment of the present invention, the digital camera module includes an image sensing unit, and the image sensing unit is one of a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS). . In a preferred situation, the mobile device to which the present invention is applied is a mobile phone or a personal digital assistant. The invention uses the digital camera module in the mobile device to sense the brightness of the environment in the φ, thereby adjusting the brightness of the backlight. Therefore, it is possible to more effectively save power loss of the mobile device, lengthen the time of using the battery, and at the same time obtain good visual effects. The above and other objects, features and advantages of the present invention will become more <RTIgt; [Embodiment] FIG. 1 is a block diagram showing a control device for backlight luminance Φ according to a preferred embodiment of the present invention. The control device provided by the present invention can be applied to mobile devices, especially mobile phones and personal digital assistants. In this embodiment, the central processing unit 110 is coupled to the display module 120, the digital camera module 13A, and the storage module 14A, respectively. The display module 120 uses a liquid crystal display and includes a backlight 16 〇
液晶顯示器之面板所需之光源。 A 數位相機模組130包括一影像感測單元15〇。值得一 提的是，本發明係利用影像感測單it 150來擷取外界的麥 像。在較佳的情況中，此擷秘術包括調整鏡頭的焦距、侧 1273818 16471 twf.doc/g 外界的亮度以小及曝光的 經過轉換和處理後可麵示额12G|妹。的影像 15〇為可卿為電荷私元件或却式半^感料元 為目前經常使用的影像感測單元15G。飞+¥體’此兩種 中央處理單元11〇功能包括了接收The light source required for the panel of the liquid crystal display. A digital camera module 130 includes an image sensing unit 15A. It is worth mentioning that the present invention utilizes the image sensing unit it 150 to capture the outside image. In the preferred case, this trick involves adjusting the focal length of the lens, side 1273818 16471 twf.doc/g. The brightness of the outside is small and the exposure is converted and processed to face the 12G|sister. The image 15 is a chargeable private component or a half-sensing element. It is an image sensing unit 15G that is currently used frequently. Fly + ¥ body 'The two central processing units 11 〇 function includes receiving
度值’並且依據此周遭照明度值來調整顯示模組⑽的北 光源160之亮度。在本實施射，周遭㈣度值可以利^ 例如是儲存在儲存模組14〇中的轉換公式或對照表，而 換成感測協定訊號。 當周遭照明度值轉換成感測協定訊號後，中央處理單 元110再依據此感測協定訊號和顯示模組120中的J光二 整訊號，產生一控制訊號以調整背光源160亮度，1整個 行動裝置可達到省電的效果，而本發明詳細的工作原理， 在後面會作詳細的闡述。 圖2係繪示依照本發明之一較佳實施例之自動調整背 光源7C度的方法流程圖。清合併參照圖1及圖2，首先， 中央處理單元110會如步驟S210所示，利用數位相機模 組130中的影像感測單元150來偵測外界環境的亮度，進 而獲得周遭照明度值。接著，依據此周遭照明度值自動調 整此顯示模組120之背光源160亮度(步驟S220),即可達 成本發明的目的。下面將針對步驟S220作更進一步解說。 中央處理單元110可依步驟S222所示，先取出顯示 8 1273818 16471twf.doc/g 模組120中控制背光源i6〇亮度所輸出之背光調整訊號， 來作為一個參考的基準值。 接著，中央處理單元11〇將周遭照明度值轉換成與背 光調整訊號格式相同之感測協定訊號（步驟S224)，^步 驟可依據事先儲存在儲存模組14〇中周遭照明度值的轉換 公式或是對照表進行轉換而求得。 ' 上述中所提到的背光調整訊號與感測協定訊號兩者 #可例如是脈寬調變值，藉由脈寬的長短來控制背光的明 暗，即寬度越寬則亮度越亮，寬度越窄則亮度越暗。 假設，當環境變亮時，所债測到的周遭照明度值相對 較大，因此感測協定訊號也會轉換成較大的值。同理，當 環境變暗時’所债測到的周遭照明度值相對較小，因此^ 測協定訊號也會轉換成較小的值。 然後，中央處理單s 110進行步驟S226,依據感測協 定訊號與背光調整訊號，進而求得亮度調節值。此步驟即 鲁利用背光調整訊號作為-個參考的基準值，將感測協定訊 號轉換而求得對應的亮度調節值。最後，中央處理單元110 會進行步驟S228,依據此亮度調節值，自動調整顯示模組 120之背光源160亮度。 回到上述中當環境變亮所得到較大的感測協定訊 號’可依步··驟S226得到較大的亮度調節值，將背光源16〇 的亮度調亮，使得顯賴組12〇在較亮崎境下也可清楚 的顯示。同理，當環境變亮所得到較小的感測協定訊號， 9 1273818 1647 ltwf.doc/g 可依步驟S226得到較小的亮度調節值。 綜上所述，在本發明其係使用行動裝置中的數位相機 =、、且130 ’來對背光源16〇的亮度作調整，如此可節省· 力並使得背光源160亮度的調整更有效率。 兒 、/ …白此技藝者，在不脫離本發明之精神 =圍内’當可作些許之更動與潤飾，因 ，圍當視後社”專鄕_界定者解。保又 【圖式簡單說明】 圖1係繪示依照本發明之一較佳 之控制裝置方塊圖。 、J之月先源冗度 圖2係緣示依照本發 光源亮度的方法流程圖。 之自動調整背 【主要元件符號說明】 120 130 140 150 160 110 :中央處理單元 顯示模組 數位相機模組 儲存模組 影像感測模組 背光源 S210:利用數位相機 得周遭照明度值 貝外界環境的亮度，以取 S220:依據周遭照明度值 光源亮度 ㈢動调整此顯示模組之背 1273818 16471twf.doc/g S222 :取得顯示模組所輸出之背光調整訊號 S224 :依據周遭照明度值，求得對應之感測協定訊 號，且感測協定訊號與背光調整訊號格式相同 S226 :依據感測協定訊號與背光調整訊號，求得亮度 調節值 S228:依據此亮度調節值，自動調整顯示模組之背光The degree value' and adjusts the brightness of the north light source 160 of the display module (10) based on the ambient illumination value. In the present embodiment, the surrounding (four) degree value can be converted, for example, into a conversion formula or a comparison table stored in the storage module 14A, and replaced with a sensing protocol signal. After the ambient illumination value is converted into the sensing protocol signal, the central processing unit 110 generates a control signal to adjust the brightness of the backlight 160 according to the sensing protocol signal and the J-light signal in the display module 120. The device can achieve the effect of power saving, and the detailed working principle of the present invention will be described in detail later. 2 is a flow chart showing a method of automatically adjusting the 7C degree of the backlight according to a preferred embodiment of the present invention. Referring to FIG. 1 and FIG. 2, first, the central processing unit 110 uses the image sensing unit 150 in the digital camera module 130 to detect the brightness of the external environment as shown in step S210, thereby obtaining the ambient illumination value. Then, the brightness of the backlight 160 of the display module 120 is automatically adjusted according to the ambient illumination value (step S220), thereby achieving the purpose of the invention. The step S220 will be further explained below. The central processing unit 110 may first take out the backlight adjustment signal outputted by the brightness of the backlight i6 模组 in the display module 8 1273818 16471 twf.doc/g as shown in step S222 as a reference value. Then, the central processing unit 11 converts the ambient illumination value into the same sensing protocol signal as the backlight adjustment signal format (step S224), and the step can be based on the conversion formula of the ambient illumination value stored in the storage module 14〇 in advance. Or find the conversion table to find. The backlight adjustment signal and the sensing protocol signal # mentioned above may be, for example, a pulse width modulation value, and the brightness of the backlight is controlled by the length of the pulse width, that is, the wider the width, the brighter the brightness, and the wider the width The narrower the brightness, the darker the brightness. It is assumed that when the environment is brighter, the measured ambient illumination value is relatively large, so the sensing protocol signal is also converted to a larger value. In the same way, when the environment is darkened, the surrounding illumination value measured by the debt is relatively small, so the test protocol signal is also converted into a smaller value. Then, the central processing unit s 110 performs step S226 to adjust the signal according to the sensing agreement signal and the backlight, thereby obtaining the brightness adjustment value. In this step, the backlight adjustment signal is used as a reference value of the reference, and the sensing protocol signal is converted to obtain a corresponding brightness adjustment value. Finally, the central processing unit 110 proceeds to step S228 to automatically adjust the brightness of the backlight 160 of the display module 120 according to the brightness adjustment value. Going back to the above, when the environment is brightened, a larger sensing protocol signal is obtained, which can be adjusted according to step S226 to obtain a larger brightness adjustment value, and the brightness of the backlight 16〇 is brightened, so that the group 12 is present. It can also be clearly displayed under brighter conditions. Similarly, when the environment is brightened, a smaller sensing protocol signal is obtained, and 9 1273818 1647 ltwf.doc/g can obtain a smaller brightness adjustment value according to step S226. In summary, in the present invention, the brightness of the backlight 16〇 is adjusted by using the digital camera=, and 130′ in the mobile device, thereby saving the force and making the adjustment of the brightness of the backlight 160 more efficient. . Children, / ... white this artist, without departing from the spirit of the invention = inside the room can be made a little more change and retouching, because, after the inspection of the post-Society" _ define the solution. Bao and [simple figure 1 is a block diagram of a preferred control device according to the present invention. Description] 120 130 140 150 160 110 : Central processing unit display module digital camera module storage module image sensing module backlight S210: using the digital camera to obtain the ambient illumination value of the external environment brightness, to take S220: Ambient illumination value source brightness (3) Dynamic adjustment of the back of the display module 1273818 16471twf.doc/g S222: Obtain the backlight adjustment signal S224 output by the display module: according to the ambient illumination value, obtain the corresponding sensing agreement signal, The sensing protocol signal is the same as the backlight adjustment signal format. S226: According to the sensing agreement signal and the backlight adjustment signal, the brightness adjustment value S228 is obtained: the display module is automatically adjusted according to the brightness adjustment value. Backlight