TWI390396B - Image saving method of image capture device - Google Patents
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Description
本發明係關於一種省電方法，特別是一種影像擷取裝置的省電方法。The invention relates to a power saving method, in particular to a power saving method of an image capturing device.
影像擷取裝置(例如，數位相機)係結合光學、精密機械及電子科技的新興產品，它藉由電荷耦合元件(charge-coupled device，CCD)將相機鏡頭所取得的影像轉換成數位影像訊號，透過電子線路的處理將數位影像訊號儲存在儲存媒體中，如磁碟片、光碟片或是IC記憶卡。另一方面，影像也可立即在各種顯示器上顯現(如電視或監視器)，以做各種影像的編輯、修改等再利用功能，相當方便且省時省錢。Image capture devices (eg, digital cameras) are an emerging combination of optical, precision mechanical and electronic technology that converts images captured by camera lenses into digital image signals by charge-coupled devices (CCDs). Digital image signals are stored in a storage medium such as a magnetic disk, a compact disc or an IC memory card through electronic processing. On the other hand, images can be immediately displayed on various displays (such as TVs or monitors), so that various image editing, modification and other re-use functions are quite convenient and save time and money.
隨著數位相機近年來逐漸成為主流消費電子產品後，消費者對數位相機功能的要求亦不斷提升，例如高畫素、短片拍攝功能、大LCD顯示螢幕、大容量記憶體、小體積和輕重量等。在這種情況下，延長電池使用及備用時間成為了數位相機設計工程師面臨的重要挑戰。With the increasing popularity of digital cameras in mainstream consumer electronics in recent years, consumer demand for digital camera functions has increased, such as high-resolution, short-film shooting, large LCD display screens, large-capacity memory, small size and light weight. Wait. In this case, extending battery usage and standby time has become an important challenge for digital camera design engineers.
在一般的數位相機中，閃光燈是常用的元件，用以在擷取影像時補強所需的光源。然而，當需要使用閃光燈時，係以固定之激發強度來激發閃光燈，而無法因應當時拍攝條件來作調整，因此，容易消耗數位相機的電力，進而縮短數位相機可使用的時間，雖然可透過省電機制來節省數位相機的電力，但在目前數位相機的省電機制中，一般來說，有螢幕背光源的亮暗調整和數位相機進入省電模式的時間設定兩種，然而上述兩種省電機制所能節省的電力幅度依然有限。In a typical digital camera, the flash is a commonly used component to reinforce the desired light source when capturing images. However, when a flash is required, the flash is activated with a fixed excitation intensity, and cannot be adjusted due to the shooting conditions at the time, so that it is easy to consume the power of the digital camera, thereby shortening the time available for the digital camera, although it is possible to save The electric mechanism saves the power of the digital camera, but in the current power saving mechanism of the digital camera, generally, there are two kinds of brightness adjustment of the backlight of the screen and the time setting of the digital camera to enter the power saving mode, but the above two provinces The power saved by the electrical mechanism is still limited.
因此，如何能提供一種影像擷取裝置的省電方法，成為研究人員待解決的問題之一。Therefore, how to provide a power saving method for an image capturing device has become one of the problems to be solved by researchers.
鑒於以上的問題，本發明提供一種影像擷取裝置的省電方法，係根據影像擷取裝置的運作模式，對應調整影像擷取裝置的曝光行程表，以讓閃光燈在當第二快門速度快於或等於安全快門時才觸發閃光，進而節省影像擷取裝置的電力。In view of the above problems, the present invention provides a power saving method for an image capturing device, which adjusts an exposure schedule of the image capturing device according to an operation mode of the image capturing device, so that the flash is faster when the second shutter speed is faster than The flash is triggered when the safety shutter is equal to or equal to the power of the image capture device.
因此，本發明所揭露之影像擷取裝置的省電方法，係應用於具有閃光燈的影像擷取裝置上，其影像擷取裝置的省電方法包含有下列步驟：儲存第一曝光行程表與第二曝光行程表於影像擷取裝置中；於正常模式下，影像擷取裝置以第一曝光行程表進行拍攝；及於省電模式下，影像擷取裝置以第二曝光行程表進行拍攝；其中第一曝光行程表具有對應開啟閃光燈的第一快門速度，第二曝光行程表具有對應開啟閃光燈的第二快門速度，且第一快門速度快於第二快門速度。Therefore, the power saving method of the image capturing device disclosed in the present invention is applied to an image capturing device having a flash, and the power saving method of the image capturing device includes the following steps: storing the first exposure schedule and the first The second exposure schedule is in the image capture device; in the normal mode, the image capture device is photographed by the first exposure schedule; and in the power saving mode, the image capture device is photographed by the second exposure schedule; The first exposure schedule has a first shutter speed corresponding to the opening of the flash, the second exposure schedule has a second shutter speed corresponding to the opening of the flash, and the first shutter speed is faster than the second shutter speed.
藉由這種影像擷取裝置的省電方法，係根據影像擷取裝置的運作模式，對應調整影像擷取裝置的曝光行程表，以讓閃光燈在當第二快門速度快於或等於安全快門時才觸發閃光，使閃光燈可因應當時拍攝條件來作調整，並且於省電模式下，搭配螢幕背光源調整、閃光燈強度調整、感光度調整與軟體防紅眼等方式來節省影像擷取裝置的電力，進而延長影像擷取裝置的使用時間。The power saving method of the image capturing device adjusts the exposure schedule of the image capturing device according to the operation mode of the image capturing device to make the flash when the second shutter speed is faster than or equal to the safety shutter. The flash is triggered, so that the flash can be adjusted according to the shooting conditions, and in the power saving mode, the screen backlight adjustment, the flash intensity adjustment, the sensitivity adjustment and the soft red-eye prevention are used to save the power of the image capturing device. In turn, the use time of the image capturing device is extended.
根據本發明所揭露之影像擷取裝置的省電方法，可應用於包括但不侷限於數位相機、網路攝影機、…等影像輸入設備上，並可內建於筆記型電腦、PDA、數位相框、手機…等具有視窗介面之電子裝置中，以提供使用者操作相關的功能。然而所附圖式僅提供參考與說明用，並非用以限制本發明。The power saving method of the image capturing device according to the present invention can be applied to image input devices including, but not limited to, digital cameras, network cameras, and the like, and can be built in notebook computers, PDAs, and digital photo frames. , mobile phones, etc., and other electronic devices having a window interface to provide functions related to user operations. The drawings are to be considered as illustrative and not restrictive.
請參照「第1圖」，係為本發明第一實施例之步驟流程圖。如「第1圖」所示，本發明之影像擷取裝置的省電方法係應用於具有閃光燈的影像擷取裝置(例如，數位相機)上，而影像擷取裝置的省電方法包含有下列步驟：首先，儲存第一曝光行程表與第二曝光行程表於影像擷取裝置中(步驟100)，其中第一曝光行程表與第二曝光行程表可儲存於影像擷取裝置的記憶體中，另外，第一曝光行程表與第二曝光行程表亦可由使用者自行設定、調整與儲存。Please refer to FIG. 1 for a flow chart of the steps of the first embodiment of the present invention. As shown in FIG. 1, the power saving method of the image capturing device of the present invention is applied to an image capturing device (for example, a digital camera) having a flash, and the power saving method of the image capturing device includes the following Step: First, storing the first exposure schedule and the second exposure schedule in the image capture device (step 100), wherein the first exposure schedule and the second exposure schedule are stored in the memory of the image capture device In addition, the first exposure schedule and the second exposure schedule may also be set, adjusted, and stored by the user.
於正常模式下，影像擷取裝置以第一曝光行程表進行拍攝(步驟110)，其中第一曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第5圖」所示)，而影像擷取裝置根據第一曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。In the normal mode, the image capturing device performs shooting according to the first exposure schedule (step 110), wherein the correspondence between the shutter speed and the ambient brightness is recorded in the first exposure schedule (as shown in FIG. 5). The image capturing device determines the condition for triggering the flash according to the value recorded in the first exposure schedule.
接著，於省電模式下，影像擷取裝置以第二曝光行程表進行拍攝，其中第一曝光行程表具有對應開啟閃光燈的第一快門速度，第二曝光行程表具有對應開啟閃光燈的第二快門速度，且第一快門速度快於第二快門速度(步驟120)，而第二快門速度快於或等於影像擷取裝置的安全快門速度。安全快門的定義是鏡頭焦距的倒數，例如，使用50mm焦距時的安全快門為1/50秒。另外，第二曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第6圖」所示)，而影像擷取裝置根據第二曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。省電模式可根據影像擷取裝置的剩餘電池電量觸發，或者，省電模式亦可根據影像擷取裝置的使用者介面的設定值觸發。Then, in the power saving mode, the image capturing device performs shooting with the second exposure schedule, wherein the first exposure schedule has a first shutter speed corresponding to the opening of the flash, and the second exposure schedule has a second shutter corresponding to the opening of the flash. Speed, and the first shutter speed is faster than the second shutter speed (step 120), and the second shutter speed is faster than or equal to the safe shutter speed of the image capture device. The definition of a safety shutter is the reciprocal of the focal length of the lens. For example, a safety shutter with a 50mm focal length is 1/50 second. In addition, the correspondence between the shutter speed and the ambient brightness is recorded in the second exposure schedule (as shown in FIG. 6), and the image capturing device determines the trigger flash according to the value recorded in the second exposure schedule. conditions of. The power saving mode can be triggered according to the remaining battery power of the image capturing device, or the power saving mode can be triggered according to the set value of the user interface of the image capturing device.
請參照「第2圖」，係為本發明第二實施例之步驟流程圖。如「第2圖」所示，本發明之影像擷取裝置的省電方法係應用於具有閃光燈的影像擷取裝置(例如，數位相機)上，而影像擷取裝置的省電方法包含有下列步驟：首先，儲存第一曝光行程表與第二曝光行程表於影像擷取裝置中(步驟200)，其中第一曝光行程表與第二曝光行程表可儲存於影像擷取裝置的記憶體中，另外，第一曝光行程表與第二曝光行程表亦可由使用者自行設定、調整與儲存。Please refer to FIG. 2, which is a flow chart of the steps of the second embodiment of the present invention. As shown in FIG. 2, the power saving method of the image capturing device of the present invention is applied to an image capturing device (for example, a digital camera) having a flash, and the power saving method of the image capturing device includes the following Step: First, storing the first exposure schedule and the second exposure schedule in the image capture device (step 200), wherein the first exposure schedule and the second exposure schedule are stored in the memory of the image capture device In addition, the first exposure schedule and the second exposure schedule may also be set, adjusted, and stored by the user.
於正常模式下，影像擷取裝置以第一曝光行程表進行拍攝(步驟210)，其中第一曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第5圖」所示)，而影像擷取裝置根據第一曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。In the normal mode, the image capturing device performs shooting with the first exposure schedule (step 210), wherein the correspondence between the shutter speed and the ambient brightness is recorded in the first exposure schedule (as shown in FIG. 5). The image capturing device determines the condition for triggering the flash according to the value recorded in the first exposure schedule.
接著，於省電模式下，影像擷取裝置以第二曝光行程表進行拍攝，並調低閃光燈的閃光強度以及調高影像擷取裝置的感光度，其中第一曝光行程表具有對應開啟閃光燈的第一快門速度，第二曝光行程表具有對應開啟閃光燈的第二快門速度，且第一快門速度快於第二快門速度(步驟220)，而第二快門速度快於或等於影像擷取裝置的安全快門速度。安全快門的定義是鏡頭焦距的倒數，例如，使用50mm焦距時的安全快門為1/50秒。另外，第二曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第6圖」所示)，而影像擷取裝置根據第二曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。省電模式可根據影像擷取裝置的剩餘電池電量觸發，或者，省電模式亦可根據影像擷取裝置的使用者介面的設定值觸發。Then, in the power saving mode, the image capturing device performs shooting with the second exposure schedule, and reduces the flash intensity of the flash and increases the sensitivity of the image capturing device, wherein the first exposure schedule has a corresponding flash opening. a first shutter speed, the second exposure schedule has a second shutter speed corresponding to the opening of the flash, and the first shutter speed is faster than the second shutter speed (step 220), and the second shutter speed is faster than or equal to the image capturing device Safe shutter speed. The definition of a safety shutter is the reciprocal of the focal length of the lens. For example, a safety shutter with a 50mm focal length is 1/50 second. In addition, the correspondence between the shutter speed and the ambient brightness is recorded in the second exposure schedule (as shown in FIG. 6), and the image capturing device determines the trigger flash according to the value recorded in the second exposure schedule. conditions of. The power saving mode can be triggered according to the remaining battery power of the image capturing device, or the power saving mode can be triggered according to the set value of the user interface of the image capturing device.
本發明透過調低閃光燈的閃光強度，來節省閃光燈所消耗的電力，並同時調高影像擷取裝置的感光度來補強，藉以節省影像擷取裝置的電力。The invention saves the power consumed by the flash by reducing the flash intensity of the flash, and simultaneously increases the sensitivity of the image capturing device to enhance the power of the image capturing device.
請參照「第3圖」，係為本發明第三實施例之步驟流程圖。如「第3圖」所示，本發明之影像擷取裝置的省電方法係應用於具有閃光燈的影像擷取裝置(例如，數位相機)上，而影像擷取裝置的省電方法包含有下列步驟：首先，儲存第一曝光行程表與第二曝光行程表於影像擷取裝置中(步驟300)，其中第一曝光行程表與第二曝光行程表可儲存於影像擷取裝置的記憶體中，另外，第一曝光行程表與第二曝光行程表亦可由使用者自行設定、調整與儲存。Please refer to "FIG. 3", which is a flow chart of the steps of the third embodiment of the present invention. As shown in FIG. 3, the power saving method of the image capturing device of the present invention is applied to an image capturing device (for example, a digital camera) having a flash, and the power saving method of the image capturing device includes the following Step: First, storing the first exposure schedule and the second exposure schedule in the image capture device (step 300), wherein the first exposure schedule and the second exposure schedule are stored in the memory of the image capture device In addition, the first exposure schedule and the second exposure schedule may also be set, adjusted, and stored by the user.
於正常模式下，影像擷取裝置以第一曝光行程表進行拍攝(步驟310)，其中第一曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第5圖」所示)，而影像擷取裝置根據第一曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。In the normal mode, the image capturing device performs shooting according to the first exposure schedule (step 310), wherein the correspondence between the shutter speed and the ambient brightness is recorded in the first exposure schedule (as shown in FIG. 5). The image capturing device determines the condition for triggering the flash according to the value recorded in the first exposure schedule.
接著，於省電模式下，影像擷取裝置以第二曝光行程表進行拍攝，並調低影像擷取裝置的螢幕的背光源亮度，其中第一曝光行程表具有對應開啟閃光燈的第一快門速度，第二曝光行程表具有對應開啟閃光燈的第二快門速度，且第一快門速度快於第二快門速度(步驟320)，而第二快門速度快於或等於影像擷取裝置的安全快門速度。安全快門的定義是鏡頭焦距的倒數，例如，使用50mm焦距時的安全快門為1/50秒。另外，第二曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第6圖」所示)，而影像擷取裝置根據第二曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。省電模式可根據影像擷取裝置的剩餘電池電量觸發，或者，省電模式亦可根據影像擷取裝置的使用者介面的設定值觸發。Then, in the power saving mode, the image capturing device performs shooting with the second exposure schedule, and reduces the backlight brightness of the screen of the image capturing device, wherein the first exposure schedule has a first shutter speed corresponding to the opening of the flash The second exposure schedule has a second shutter speed corresponding to the opening of the flash, and the first shutter speed is faster than the second shutter speed (step 320), and the second shutter speed is faster than or equal to the safe shutter speed of the image capturing device. The definition of a safety shutter is the reciprocal of the focal length of the lens. For example, a safety shutter with a 50mm focal length is 1/50 second. In addition, the correspondence between the shutter speed and the ambient brightness is recorded in the second exposure schedule (as shown in FIG. 6), and the image capturing device determines the trigger flash according to the value recorded in the second exposure schedule. conditions of. The power saving mode can be triggered according to the remaining battery power of the image capturing device, or the power saving mode can be triggered according to the set value of the user interface of the image capturing device.
本發明透過將螢幕的背光源自動切換成弱，並且在使用者拍照、瀏覽或按功能鍵時，不作持續性的背光源投射，而是當使用者完成上述行為(拍照、瀏覽或按功能鍵)之後，偵測到使用者未有持續按壓按鍵，便將螢幕的背光源關掉，藉以節省影像擷取裝置的電力。The invention automatically switches the backlight of the screen to be weak, and does not make a continuous backlight projection when the user takes a photo, browses or presses a function key, but when the user completes the above behavior (photographing, browsing or pressing a function key) After that, it is detected that the user does not continuously press the button, the backlight of the screen is turned off, thereby saving the power of the image capturing device.
請參照「第4圖」，係為本發明第四實施例之步驟流程圖。如「第4圖」所示，本發明之影像擷取裝置的省電方法係應用於具有閃光燈的影像擷取裝置(例如，數位相機)上，而影像擷取裝置的省電方法包含有下列步驟：首先，儲存第一曝光行程表與第二曝光行程表於影像擷取裝置中(步驟400)，其中第一曝光行程表與第二曝光行程表可儲存於影像擷取裝置的記憶體中，另外，第一曝光行程表與第二曝光行程表亦可由使用者自行設定、調整與儲存。Please refer to FIG. 4, which is a flow chart of the steps of the fourth embodiment of the present invention. As shown in FIG. 4, the power saving method of the image capturing device of the present invention is applied to an image capturing device (for example, a digital camera) having a flash, and the power saving method of the image capturing device includes the following Step: First, storing the first exposure schedule and the second exposure schedule in the image capture device (step 400), wherein the first exposure schedule and the second exposure schedule are stored in the memory of the image capture device In addition, the first exposure schedule and the second exposure schedule may also be set, adjusted, and stored by the user.
於正常模式下，影像擷取裝置以第一曝光行程表進行拍攝(步驟410)，其中第一曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第5圖」所示)，而影像擷取裝置根據第一曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。In the normal mode, the image capturing device performs shooting with the first exposure schedule (step 410), wherein the correspondence between the shutter speed and the ambient brightness is recorded in the first exposure schedule (as shown in FIG. 5). The image capturing device determines the condition for triggering the flash according to the value recorded in the first exposure schedule.
接著，於省電模式下，影像擷取裝置以第二曝光行程表進行拍攝，且影像擷取裝置利用軟體方式執行防紅眼功能，其中第一曝光行程表具有對應開啟閃光燈的第一快門速度，第二曝光行程表具有對應開啟閃光燈的第二快門速度，且第一快門速度快於第二快門速度(步驟420)，而第二快門速度快於或等於影像擷取裝置的安全快門速度。安全快門的定義是鏡頭焦距的倒數，例如，使用50mm焦距時的安全快門為1/50秒。另外，第二曝光行程表中記錄有快門速度與環境亮度的對應關係(如「第6圖」所示)，而影像擷取裝置根據第二曝光行程表中所記錄的數值，以決定觸發閃光燈的條件。省電模式可根據影像擷取裝置的剩餘電池電量觸發，或者，省電模式亦可根據影像擷取裝置的使用者介面的設定值觸發。Then, in the power saving mode, the image capturing device performs shooting with the second exposure schedule, and the image capturing device performs the red-eye prevention function by using a software mode, wherein the first exposure schedule has a first shutter speed corresponding to the opening of the flash. The second exposure schedule has a second shutter speed corresponding to opening the flash, and the first shutter speed is faster than the second shutter speed (step 420), and the second shutter speed is faster than or equal to the safe shutter speed of the image capture device. The definition of a safety shutter is the reciprocal of the focal length of the lens. For example, a safety shutter with a 50mm focal length is 1/50 second. In addition, the correspondence between the shutter speed and the ambient brightness is recorded in the second exposure schedule (as shown in FIG. 6), and the image capturing device determines the trigger flash according to the value recorded in the second exposure schedule. conditions of. The power saving mode can be triggered according to the remaining battery power of the image capturing device, or the power saving mode can be triggered according to the set value of the user interface of the image capturing device.
由於原本影像擷取裝置的防紅眼功能係透過閃光燈來實現，而本發明於省電模式下透過軟體方式執行防紅眼功能，藉以節省影像擷取裝置的電力。Since the red-eye prevention function of the original image capturing device is realized by a flash, the present invention performs the red-eye preventing function through the software mode in the power saving mode, thereby saving power of the image capturing device.
請參照「第5圖」，係為本發明之第一曝光行程表的示意圖。如「第5圖」所示，本發明之第一曝光行程表10的橫軸代表為環境亮度，第一曝光行程表10的縱軸代表為快門速度。Please refer to "figure 5", which is a schematic diagram of the first exposure schedule of the present invention. As shown in "Fig. 5", the horizontal axis of the first exposure stroke table 10 of the present invention represents ambient brightness, and the vertical axis of the first exposure stroke table 10 represents shutter speed.
舉例來說，當影像擷取裝置在正常模式下，影像擷取裝置的光圈為3.1、快門速度為1/60秒、感光度為80時，根據第一曝光行程表10所記錄的數值，環境亮度9.49為閃光燈的臨界值，換言之，若環境亮度低於或等於9.49時，影像擷取裝置會於拍攝過程中觸發閃光燈。For example, when the image capturing device is in the normal mode, the aperture of the image capturing device is 3.1, the shutter speed is 1/60 second, and the sensitivity is 80, according to the value recorded in the first exposure schedule 10, the environment The brightness of 9.49 is the threshold value of the flash. In other words, if the ambient brightness is lower than or equal to 9.49, the image capture device will trigger the flash during shooting.
當影像擷取裝置在正常模式下，影像擷取裝置的光圈為3.1、快門速度為1/60秒、感光度為200時，根據第一曝光行程表10所記錄的數值，環境亮度8.17為閃光燈的臨界值，換言之，若環境亮度低於或等於8.17時，影像擷取裝置會於拍攝過程中觸發閃光燈。When the image capturing device is in the normal mode, the aperture of the image capturing device is 3.1, the shutter speed is 1/60 second, and the sensitivity is 200. According to the value recorded in the first exposure schedule 10, the ambient brightness is 8.17. The threshold value, in other words, if the ambient brightness is lower than or equal to 8.17, the image capture device will trigger the flash during shooting.
請參照「第6圖」，係為本發明之第二曝光行程表的示意圖。如「第6圖」所示，本發明之第二曝光行程表20的橫軸代表為環境亮度，第二曝光行程表20的縱軸代表為快門速度。Please refer to "figure 6", which is a schematic diagram of the second exposure schedule of the present invention. As shown in "Fig. 6", the horizontal axis of the second exposure stroke table 20 of the present invention represents ambient brightness, and the vertical axis of the second exposure stroke table 20 represents shutter speed.
舉例來說，當影像擷取裝置在省電模式下，影像擷取裝置的光圈為3.1、快門速度為1/35秒(以鏡頭之焦距為35mm為例，故此快門速度等於影像擷取裝置的安全快門速度)、感光度為200時，根據第二曝光行程表20所記錄的數值，環境亮度7.39為閃光燈的臨界值，換言之，若環境亮度低於或等於7.39時，影像擷取裝置會於拍攝過程中觸發閃光燈，若環境亮度高於7.39時，影像擷取裝置不會於拍攝過程中觸發閃光燈。如此，可讓影像擷取裝置在省電模式下，不致在亮的環境下觸發閃光燈而消耗過多的能量，藉以節省影像擷取裝置的電力。For example, when the image capturing device is in the power saving mode, the image capturing device has an aperture of 3.1 and a shutter speed of 1/35 second (for example, the focal length of the lens is 35 mm, so the shutter speed is equal to that of the image capturing device. When the shutter speed is 200 and the sensitivity is 200, according to the value recorded in the second exposure schedule 20, the ambient brightness is 7.39 as the threshold value of the flash. In other words, if the ambient brightness is lower than or equal to 7.39, the image capturing device will The flash is triggered during shooting. If the ambient brightness is higher than 7.39, the image capture device will not trigger the flash during shooting. In this way, the image capturing device can save excessive power by triggering the flash in a bright environment in the power saving mode, thereby saving power of the image capturing device.
綜合以上所述，本發明之影像擷取裝置的省電方法，係根據影像擷取裝置的運作模式，對應調整影像擷取裝置的曝光行程表，以讓閃光燈在第二快門速度快於或等於安全快門時才觸發閃光，使閃光燈可因應當時拍攝條件來作調整，並且於省電模式下，搭配螢幕背光源調整、閃光燈強度調整、感光度調整與軟體防紅眼等方式來節省影像擷取裝置的電力，進而延長影像擷取裝置的使用時間。In summary, the power saving method of the image capturing device of the present invention adjusts the exposure schedule of the image capturing device according to the operation mode of the image capturing device to make the flash faster or equal to the second shutter speed. The flash is triggered when the shutter is safe, so that the flash can be adjusted according to the shooting conditions, and in the power saving mode, the screen capture device can be saved with the screen backlight adjustment, the flash intensity adjustment, the sensitivity adjustment and the software anti-red-eye reduction. The power, which in turn extends the use of the image capture device.
雖然本發明以前述之較佳實施例揭露如上，然其並非用以限定本發明，任何熟習相像技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.
10．．．第一曝光行程表10. . . First exposure schedule
20．．．第二曝光行程表20. . . Second exposure schedule
第1圖係為本發明第一實施例之步驟流程圖。Figure 1 is a flow chart showing the steps of the first embodiment of the present invention.
第2圖係為本發明第二實施例之步驟流程圖。Figure 2 is a flow chart showing the steps of the second embodiment of the present invention.
第3圖係為本發明第三實施例之步驟流程圖。Figure 3 is a flow chart showing the steps of the third embodiment of the present invention.
第4圖係為本發明第四實施例之步驟流程圖。Figure 4 is a flow chart showing the steps of the fourth embodiment of the present invention.
第5圖係為本發明之第一曝光行程表的示意圖。Figure 5 is a schematic view of the first exposure schedule of the present invention.
第6圖係為本發明之第二曝光行程表的示意圖。Figure 6 is a schematic view of the second exposure schedule of the present invention.
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