1352539 100年07月21¾梭正番換頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一磕數位攝像設備，尤其涉及一種具有白平 衡調整功能之數位攝像電子設備及白平衡調整方法。 【先前技術】 [0002] 目前自動白平衡調整中，係根據現場光源亮度及光源中 紅、綠、藍成分之比重來進行白平衡模式之選擇。此類 方法存在一定誤判情況。如將室外傍晚或陰天等低色溫 場景誤判為室内，從而對照片進行藍色補償，造成無法 還原真實之室外場景，無法達到預想之效果。 【發明内容】 [0003] 鑒於此，有必要提供一種白平衡調整系統及其白平衡調 整方法。 [0004] 一種用於數碼攝像裝置之白平衡調整系統，該系統包括 :一個全球定位系統模塊、一個處理器及一個白平衡調 整模塊。所述全球定位系統模塊用於獲取衛星發出之載 有位置資訊及時間資訊之訊號，並輸出所述位置資訊、 所述時間資訊及當前位置之訊號強度；所述處理器内部 預設有一個訊號強度閾值，該處理器接收所述全球定位 系統模塊輸出之訊號強度並將該訊號強度與所述訊號強 度閾值進行比較，根據比較結果判斷當前環境係室内還 是室外，所述處理器還用於判斷全球定位系統之可用狀 態；所述白平衡調整模塊用於根據處理器之判斷結果， 進行白平衡調整。本發明還提供一種白平衡調整方法。 [0005] 一種用於數碼攝像裝置之白平衡調整方法，該方法包括 096138140 表單編號A0101 第4頁/共13頁 1003266225-0 1352539 . » [0006] [0007] [0008] [0009] 100年07月21日修正替换頁 如下步驟：首先判斷GPS是否可用；當全球定位系統可用 時，接收衛星發出之載有位置資訊及時間資訊之訊號， 並輸出所述位置資訊、所述時間資訊及當前位置之訊號 強度；根據GPS之訊號強度與預設之訊號強度閾值比較， 判斷當前環境係室内還是室外；最後根據判斷出之室内 或室外結果，進行白平衡調整。 上述白平衡調整系統及方法，可以通過GPS訊號之強度及 其輸出位置資訊與時間資訊來協助數碼攝像裝置判斷拍 照場景，可以彌補傳統白平衡室内外誤判之情形。 【實施方式】 請參閱圖1，其為一較佳實施方式之白平衡调整系统之功 能模块图。本實施方式中以數位相機為例進行說明。 所述處理器11，該處理器11内部預設有一個訊號強度閾 值，一個第一緯度閾值、一個第二緯度閾值，於本實施 例中，為提高處理速度，採用兩個緯度閾值，來劃分三 個緯度帶，即高、中、低三個緯度帶。如果需要，可以 設置更多個緯度閾值，劃分更細之緯度帶。於本實施例 中，第一緯度閾值係30度，第二緯度閾值係60度。高緯 度係指大於60度之緯度，中緯度係指大於等於30度且小 於等於60度之緯度，低緯度係指小於30度之緯度。 所述記憶體14用於保存一個内建表。該内建表列出高、 中、低緯度每段時間對應之白平衡補償值。 所述處理器11判斷GPS模塊12是否於可用狀態，即是否可 以接收到衛星發出之資料。當GPS模塊12可以接收到衛星 096138140 表單編號A0101 第5頁/共13頁 1003266225-0 [0010] 1352539 卩㈤年η日修正雜頁1 發出之資料時，貝I丨GPS模塊12處於可用狀態，如果GPS模 塊12不能接收到衛星發出之資料時，則GPS模塊丨2不可用 ’此時’白平衡調整模塊13採用傳統白平衡調整，即根 據現場光源亮度及光源中紅、綠' 藍成分之比重來進行 白平衡模式之選擇。 [0011] 當GPS模塊12處於可用狀態時，處理器11根據從GPS模塊 12中接收之訊號強度與處理器11本身預設之訊號強度閾 值進行比較，判斷當前係於室内還是室外，當訊號強度 大於所述強度閾值時，則判斷當前環境為室外；當訊號 強度小於等於所述強度閾值時，則判斷當前環境為室内 。例如’ 一般於室内之訊號強度係小於等於-145dbm(毫 瓦分貝），如果於此範圍内，就判斷當前環境為室内，而 於室外一般係大於-145dbm，於此範圍内，則判斷當前環 境為室外。 [0012] 當所述處理器11判斷出當前處於室外環境時，處理器11 根據從GPS模塊12中接收之衛星之個數與處理器11本身預 設之衛星數目進行比較，判斷是否可以成功定位。例如 ，如果衛星數目不小於四顆，則認為可以成功定位。因 為於室外不同緯度’承受可見光之輻射強度不同，而且 室外不同時間段’日光強度不同，所以於室外定位成功 後，還需要瞭解室外當時之日照強度° [0013] GPS模塊12可以輸出當前之經緯度及格林威治時間，所以 可以利用GPS模塊12判斷當前位置之經緯度’處理器11根 據當前位置之經度，計算出當前位置與格林威治時間之 時差，得到當地時間。處理器11根據當前緯度之高低及 096138140 表單编號A0101 第6頁/共13頁 1003266225-0 1352539 * · 100年07月21日梭正替换頁 當時之時間於記憶體14中之内建表中查找與之相對應之 室外白平衡調整補償值，處理器11將白平衡補償值輸出 至白平衡調整模塊13，進行白平衡調整。例如，於室外 白天之情況下，正午時段處於低緯度之非洲，因為室外 亮度很高，可能輸出抑制亮度之白平衡補償值，但如果 係同時段之處於高緯度之極圈附近，就可以輸出提高亮 度之白平衡補償值。 [0014] 當GPS模塊12無法定位時。例如，當拍攝者於峽谷一線天 ，或係位於高樓林立處，由於有遮蔽，雖然訊號很強， 但仅能接收到數量較少之衛星，不足以定位時，則採用 第一室外白平衡模式進行調整，該第一室外白平衡模式 調整係白平衡調整模塊13内部預設之一種室外白平衡模 式調整方式。 [0015] 請參閱圓2，其為一較佳實施方式之白平衡調整方法之流 程圖。 [0016] 一種白平衡調整方法，包括如下步驟： [0017] 步驟S101，處理器11判斷GPS模塊12是否於可用狀態； [0018] 步驟S201，當GPS模塊12於不可用狀態，利用白平衡調 整模塊13根據現場光源亮度及光源中紅、綠、藍成分之 比重來進行白平衡模式之選擇，即採用傳統之白平衡調 整； [0019] 步驟S102，當步驟S101判斷出GPS模塊12於可用狀態時 ，將GPS模塊12輸出之訊號強度與處理器11内預設之訊號 強度閾值進行比較，判斷是否超過該閾值，本實施例中 096138140 表單編號A0101 第7頁/共13頁 1003266225-0 ，所述閾值為-145dbm ; [0020] 步驟S103，當GPS模塊12輸出之訊號強度超過處理器11 内預設之訊號強度之閾值時，則認為攝像裝置所處環境 為室外，根據從GPS模塊12中接收之衛星數目是否超過處 理器11預設之數目，判斷是否可以成功定位，本實施例 中，所述閾值為-145dbm，預設之數目為四顆； [0021] 步驟S1 04，當定位成功後，根據GPS模塊12輸出資料中 之緯度與處理器11内預設之緯度閾值進行比較，判斷當 前所處緯度之高低，且處理器11根據GPS模塊12輸出資料 中之經度及格林威治時間，計算出當地時間，讀取記憶 體14中之内建表，確定當前緯度、當前時間之白平衡補 償值’根據白平衡補償值進行第二室外白平衡調整，所 述第二室外白平衡調整係白平衡調整模塊13根據内建表 中之白平衡補償值，直接對攝取之圊像進行白平衡調整 。本實施例中，所述第一緯度閾值為3〇度，第二緯度閾 值為60度； [0022] 步驟S301 ’當步騾S102中〇1^模塊12之訊號強度小於等 於強度之閾值時，則認為攝像裝置所處環境為室内，白 平衡調整模塊13利用室内白平衡模式進行白平衡調整， 本實施例中，所述閾值為_l45dbm; [0023] 步驟S401 ’當步騾S103中判斷無法定位時’白平衡調整 模塊13進行第一室外白平衡模式調整，該第一室外白平 衡模式調整係白平衡調整模塊13内部預設之一種室外白 平衡模式調整方式。 096138140 表單编號A0101 第8頁/共13頁 1003266225-0 1352539 . * 100年07月21日按正替換頁 [0024] 利用本發明可根據GPS訊號強度，其輸出之位置參數及時 間參數協助數碼攝像裝置判斷拍照所處環境係室内還是 室外，進而彌補傳統白平衡室内外誤判之情形。 [0025] 綜上所述，本發明符合發明專利要件，爰依法提出專利 申請。惟，以上所述者僅為本發明之較佳實施方式，本 發明之範圍並不以上述實施方式為限，舉凡熟悉本案技 藝之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0026] 圖1為一較佳實施方式之一種白平衡調整系統之功能模塊 TSI · 園， [0027] 圖2為一較佳實施方式之一種白平衡調整方法之流程圖。 【主要元件符號說明】 [0028] 處理器：11 [0029] GPS模塊：12 [0030] 白平衡模塊：13 [0031] 存儲器：14 096138140 表單編號A0101 第9頁/共13頁 1003266225-01352539 100 July 2007 213⁄4 Shuttle Zhengchang Page 6 Description of Invention: [Technical Field] [0001] The present invention relates to a digital camera device, and more particularly to a digital camera electronic device with white balance adjustment function and white balance Adjustment method. [Prior Art] [0002] In the current automatic white balance adjustment, the white balance mode is selected according to the brightness of the field light source and the specific gravity of the red, green, and blue components in the light source. There are certain misjudgments in such methods. If the low color temperature scene such as outdoor evening or cloudy is misjudged indoors, the blue compensation of the photos will result in the inability to restore the real outdoor scene and the desired effect cannot be achieved. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide a white balance adjustment system and a white balance adjustment method thereof. [0004] A white balance adjustment system for a digital camera, the system comprising: a global positioning system module, a processor, and a white balance adjustment module. The global positioning system module is configured to acquire a signal sent by the satellite and carry the location information and the time information, and output the location information, the time information, and the signal strength of the current location; the processor is internally provided with a signal The intensity threshold, the processor receives the signal strength output by the global positioning system module and compares the signal strength with the signal strength threshold, and determines whether the current environment is indoor or outdoor according to the comparison result, and the processor is further used for determining The available state of the global positioning system; the white balance adjustment module is configured to perform white balance adjustment according to the judgment result of the processor. The invention also provides a white balance adjustment method. [0005] A white balance adjustment method for a digital camera device, the method comprising 096138140 Form No. A0101 Page 4 / Total 13 Page 1003266225-0 1352539 . » [0006] [0007] [0008] [0009] 100 years 07 Correction of the replacement page on the 21st of the following steps: first determine whether the GPS is available; when the global positioning system is available, receive the signal from the satellite carrying the location information and time information, and output the location information, the time information and the current location The signal strength is determined according to the signal strength of the GPS and the preset signal strength threshold to determine whether the current environment is indoor or outdoor; finally, the white balance is adjusted according to the determined indoor or outdoor result. The white balance adjustment system and method can assist the digital camera to judge the shooting scene by the intensity of the GPS signal and its output position information and time information, which can compensate for the misjudgment of the traditional white balance indoors and outdoors. [Embodiment] Please refer to FIG. 1, which is a functional block diagram of a white balance adjustment system according to a preferred embodiment. In the present embodiment, a digital camera will be described as an example. The processor 11 is internally provided with a signal strength threshold, a first latitude threshold, and a second latitude threshold. In this embodiment, to improve the processing speed, two latitude thresholds are used to divide Three latitude bands, namely three high, medium and low latitude bands. If needed, you can set more latitude thresholds to divide the finer latitude bands. In this embodiment, the first latitude threshold is 30 degrees and the second latitude threshold is 60 degrees. High latitude refers to latitude greater than 60 degrees, mid latitude refers to latitude greater than or equal to 30 degrees and less than or equal to 60 degrees, and low latitude refers to latitude less than 30 degrees. The memory 14 is used to store a built-in table. The built-in table lists the white balance compensation values for each period of time at high, medium, and low latitudes. The processor 11 determines if the GPS module 12 is in an available state, i.e., whether it can receive the data sent by the satellite. When the GPS module 12 can receive the satellite 096138140 form number A0101 page 5 / 13 pages 1003266225-0 [0010] 1352539 卩 (five) year η day correction page 1 issued information, the Bay I 丨 GPS module 12 is available, If the GPS module 12 cannot receive the data sent by the satellite, the GPS module 丨2 is not available. At this time, the white balance adjustment module 13 adopts the traditional white balance adjustment, that is, according to the brightness of the field light source and the red and green 'blue components in the light source. The specific gravity is used to select the white balance mode. [0011] When the GPS module 12 is in the available state, the processor 11 compares the signal strength received from the GPS module 12 with the signal strength threshold preset by the processor 11 to determine whether the current system is indoors or outdoors, when the signal strength is When the intensity threshold is greater than the intensity threshold, the current environment is determined to be outdoor; when the signal strength is less than or equal to the intensity threshold, the current environment is determined to be indoor. For example, 'the signal intensity in the room is less than or equal to -145dbm (milliwatts decibel). If it is within this range, it is judged that the current environment is indoor, and the outdoor is generally greater than -145dbm. In this range, the current environment is judged. For outdoor. [0012] When the processor 11 determines that it is currently in the outdoor environment, the processor 11 compares the number of satellites received from the GPS module 12 with the number of satellites preset by the processor 11 to determine whether the positioning can be successfully performed. . For example, if the number of satellites is not less than four, it is considered that the positioning can be successful. Because the radiant intensity of the visible light at different latitudes is different, and the sunlight intensity is different at different outdoor time periods, after the outdoor positioning is successful, it is necessary to know the outdoor sunshine intensity at the time. [0013] The GPS module 12 can output the current latitude and longitude. And Greenwich Mean Time, so the GPS module 12 can be used to determine the latitude and longitude of the current position. The processor 11 calculates the time difference between the current position and the Greenwich time according to the longitude of the current position, and obtains the local time. The processor 11 is based on the current latitude and 096138140 Form No. A0101 Page 6 / Total 13 pages 1003266225-0 1352539 * · July 21, 2001, the page is replacing the current time in the built-in table in the memory 14 Looking up the corresponding outdoor white balance adjustment compensation value, the processor 11 outputs the white balance compensation value to the white balance adjustment module 13 to perform white balance adjustment. For example, in the case of outdoor daytime, in the low latitude Africa at noon, because the outdoor brightness is very high, it may output a white balance compensation value that suppresses the brightness, but if the simultaneous segment is near the high latitude pole, the output can be increased. White balance compensation value for brightness. [0014] When the GPS module 12 is unable to locate. For example, when the photographer is in the canyon for a long time, or is located in a high-rise building, because of the shielding, although the signal is very strong, but only a small number of satellites can be received, when not enough to locate, the first outdoor white balance is adopted. The mode is adjusted, and the first outdoor white balance mode adjustment is an outdoor white balance mode adjustment mode preset by the white balance adjustment module 13 . [0015] Please refer to circle 2, which is a flow chart of a white balance adjustment method of a preferred embodiment. [0016] A white balance adjustment method includes the following steps: [0017] Step S101, the processor 11 determines whether the GPS module 12 is in an available state; [0018] Step S201, when the GPS module 12 is in an unavailable state, utilizes white balance adjustment The module 13 selects the white balance mode according to the brightness of the field light source and the proportion of the red, green and blue components in the light source, that is, adopts the traditional white balance adjustment; [0019] Step S102, when the step S101 determines that the GPS module 12 is available. The signal strength outputted by the GPS module 12 is compared with the preset signal strength threshold in the processor 11 to determine whether the threshold is exceeded. In this embodiment, 096138140 form number A0101 page 7/13 pages 1003266225-0, The threshold value is -145dbm; [0020] Step S103, when the signal strength output by the GPS module 12 exceeds the threshold value of the preset signal strength in the processor 11, the environment of the camera device is considered to be outdoor, according to the slave GPS module 12 Whether the number of received satellites exceeds the preset number of the processor 11 and determines whether the positioning can be successfully performed. In this embodiment, the threshold is -145dbm, and the preset number is [0021] Step S1 04, after the positioning is successful, according to the latitude in the output data of the GPS module 12 and the preset latitude threshold in the processor 11, the current latitude is determined, and the processor 11 is based on the GPS. The module 12 outputs the longitude and the Greenwich time in the data, calculates the local time, reads the built-in table in the memory 14, and determines the white balance compensation value of the current latitude and current time' to perform the second outdoor according to the white balance compensation value. The white balance adjustment, the second outdoor white balance adjustment system white balance adjustment module 13 directly adjusts the white balance of the captured artifacts according to the white balance compensation value in the built-in table. In this embodiment, the first latitude threshold is 3 degrees, and the second latitude threshold is 60 degrees. [0022] Step S301 'When the signal strength of the module 12 in step S102 is less than or equal to the intensity threshold, The white balance adjustment module 13 uses the indoor white balance mode to perform white balance adjustment. In this embodiment, the threshold is _l45dbm; [0023] step S401 'in step S103, it is determined that During the positioning, the white balance adjustment module 13 performs a first outdoor white balance mode adjustment, and the first outdoor white balance mode adjustment is an outdoor white balance mode adjustment mode preset by the white balance adjustment module 13 . 096138140 Form No. A0101 Page 8 of 13 1003266225-0 1352539 . * Replacement page by July 21, 2001 [0024] With the invention, the digital position can be assisted according to the GPS signal strength, its output position parameters and time parameters. The camera device determines whether the environment in which the photograph is taken is indoor or outdoor, thereby making up for the misjudgment of the traditional white balance indoors and outdoors. [0025] In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0026] FIG. 1 is a functional block diagram of a white balance adjustment system according to a preferred embodiment of the present invention. [0027] FIG. 2 is a flow chart of a white balance adjustment method according to a preferred embodiment. . [Main component symbol description] [0028] Processor: 11 [0029] GPS module: 12 [0030] White balance module: 13 [0031] Memory: 14 096138140 Form number A0101 Page 9 of 13 1003266225-0