TWI227995B

TWI227995B - Strobe intensity adjustable system and method

Info

Publication number: TWI227995B
Application number: TW92133397A
Authority: TW
Inventors: Jin-Kae Jang
Original assignee: Primax Electronics Ltd
Priority date: 2003-11-27
Filing date: 2003-11-27
Publication date: 2005-02-11
Also published as: TW200518589A

Abstract

The present invention provides a strobe intensity adjustable system applying in an image capture apparatus. The image capture apparatus comprises a strobe, an image sensitization device and a focus module. The strobe is used to flash at a plurality of intensity. The image sensitization device is used to sense an outer image having a focusing target. The focus module is used to focus the focusing target. The strobe intensity adjustable system comprises a control module and a flash intensity estimating module. The control module is used to, firstly, after focusing, provide a first image sense signal to trigger the image sensitization device to sense the outer image to generate a first exposure data. Secondly, the control module produces a preflash signal to trigger the strobe to flash by a specific first power. As a result, the control module produces a second image sense signal to trigger the image sensitization device to sense the outer image to generate a second exposure data. The flash intensity estimating module is used to proceed a strobe intensity process based on the first exposure data and the second exposure data to get a second power. Finally, the strobe flash by the second power, and the image sensitization device capture the outer image under an optimized flash tuning exposure by the second intensity.

Description

1227995 五、發明說明α) 【發明所屬之技術領域】本發明係關於一種閃光燈強度調整系統以及方法，特別是關於一種可針對對焦主體進行閃光燈強度調整之系統以及方法。【先前技術】習知的影像擷取裝置在進行環境光源較暗的影像擷取時，會利用閃光燈來進行明亮度補強。但早期閃光燈所輸出的光強度為固定，即不論周遭光源強或弱、影像的距離遠或近，都發出一定強度的光。因此，固定強度的閃光使得擷取影像的明亮度以及對比度往往並非如使用者預期般的有良好的閃光效果。隨著技術的發展，演變出具有強度調整的閃光燈裝置。早期強度調整裝置係於影像擷取裝置的快門按下之前，先利用閃光燈進行一次預閃。接著由一光耦合器擷取預閃當時影像迴授之光強度，再配合内部之邏輯電路計算出適合的閃光燈強度。閃光燈則依照計算得出的強度發出閃光。光耦合器迴授與閃光燈預閃係在同一時間内進行，閃光燈必須持續發光直到光搞合器内累積電荷（正比於光量）達到一固定量。如此一來，閃光燈就可以配合周遭光源的強弱來發出不同強度的閃光，使得擷取影像的效果比1227995 V. Description of the invention α) [Technical field to which the invention belongs] The present invention relates to a flash intensity adjustment system and method, and particularly to a system and method that can adjust flash intensity for a focused subject. [Prior Art] When the conventional image capture device captures images with low ambient light sources, it uses flash to enhance brightness. However, the intensity of the light output by the early flash was fixed, that is, no matter whether the surrounding light source was strong or weak, and the distance of the image was far or near, the light emitted a certain intensity. Therefore, a fixed-intensity flash makes the brightness and contrast of the captured image often not as good as the user expects. With the development of technology, flash units with intensity adjustment have evolved. The early intensity adjustment device pre-flashes the flash with the flash before the shutter of the image capture device is pressed. An optical coupler then captures the light intensity of the image feedback at the time of the pre-flash, and then works with the internal logic circuit to calculate the appropriate flash intensity. The flash fires at the calculated intensity. Photocoupler feedback and flash pre-flash are performed at the same time. The flash must continue to emit light until the accumulated charge in the light coupler (which is proportional to the amount of light) reaches a fixed amount. In this way, the flash can emit flashes of different intensities in accordance with the strength of the surrounding light source, making the effect of capturing images better than

第8頁五、發明說明（2) 先前不具光耦合器的閃光燈進步強度調整裝置係配合價格昂貴二。但是上述的閃光燈昂。另外，光耦合器是針對整個取Ϊf，因此售價高分析，且分析的重點在於整體取景二=%境進行閃光強度是否正確。因此當擷取的主冑（後：：位置之閃光效果像時對於非未於整體取景的中心士 ’、、、主體）於擷取影閃光效果仍不理想。 "、寺’則對焦主體所獲之目前時代已演進至數位影像擷位影像擷取裝置内具有一感光元凌置的時代，由於數取影像的光強度的功能。因此在數即具有感測被擷Page 8 V. Description of the invention (2) The advancement of the flash without the optical coupler The intensity adjustment device is costly. But the flash above is on. In addition, the optocoupler is aimed at the whole f, so the price is high, and the focus of the analysis is whether the flash intensity is correct in the overall view II =% environment. Therefore, when capturing the main flash (post :: position of the flash effect image), the flash effect of the captured image is still not ideal for those who are not in the overall view. ", Temple 'is the time when the subject was focused on. The current era has evolved to the era of digital image capture. The image capture device has an era of photoreceptor placement, due to the function of capturing the light intensity of the image. So the number is sensed

知閃光燈強度調整裝置中的光=時代；J :影像擷取裝置中所採用的閃光燈強度 T，目前有兩件美國專利加以揭國專 6,⑴，0 73號（後續簡稱，〇73專利），盆第 6, 546, 2 0 3號（後續簡稱，2〇3專利）。八一疋美國專利第請參閱圖圖係習知閃光燈強度調整方法流程圖：n在習ΪΓ像擷取裝置的設計中，通常會包含-取像按鍵50。取像按鍵50設計有三個按壓位置，態、S1為按屋：半狀態、S2則為全虔狀態。取像按鍵5〇處在so位置時’代表影像擷取裝置為待機狀態，不進行任何動作。當取像制50被按壓至S1位置，則習知影像擷取裝置將進行對焦。當按壓至S2位置時，習知影像擷取裝置將 1227995 五、發明說明（3) __________〜發出閃光（視情況所需）並同時擷取影像。習強度調整方法，則係先利用按壓至s丨位置時將隹二光燈行對焦。對焦完畢後，則視情況重新再次取景或體進景，並於取景完成後完全按下取像按鍵至s 2位置。' 2 閃光燈開始進行閃光燈的強度調整，並於調整後發t =，的同時進行影像擷取。綜合以上所述，可將習知的=光強度調整方法整理如下所列步驟：燈步驟S1 0 :開始。步驟S12 :按壓取像按鍵5〇至81位置以進行對焦主體的焦動作。步驟S1 4 ·重新取景（或保持原景），並按壓取像按鍵5 至S 2位置。步驟S 1 8 :進行閃光燈強度調整。步驟S20:發出調整後之閃光並擷取影像。在閃光燈強度調整步驟方面，，〇 7 3專利乃先由閃光燈進行兩次閃光燈預閃。感光元件則分別在兩次預閃中感測當時的被擷取影像的光強度，並據以分析而得在預定強度上閃光燈相對應需要的發光強度。，2 〇 3專利則是將兩次預閃修改為一次預閃、一次在未閃光下直接感測被榻取影像。上述兩件專利所揭露之技術改善了不具閃光燈強度調 t糸統以及光搞合為昂貴等問題，但由於仍疋在掘取影像前才針對整個被擷取影像進行閃光強度調整，因此當取景Know the light in the flash intensity adjustment device = era; J: the flash intensity T used in the image capture device. Currently, there are two US patents published by National Patent No. 6, ⑴, 0 73 (hereinafter referred to as the 073 patent). , Basin No. 6,546,203 (hereinafter referred to as the 203 patent). Bayi's US Patent No. Please refer to the figure. Figure is the flow chart of the conventional flash intensity adjustment method. Figure: In the design of the image capture device, the image capture button 50 is usually included. The image capturing button 50 is designed with three pressing positions, the state, S1 is the house pressing state: the half state, and S2 is the godly state. When the image capturing button 50 is at the so position, it means that the image capturing device is in a standby state and does not perform any action. When the image capturing system 50 is pressed to the S1 position, the conventional image capturing device will focus. When pressed to the S2 position, the conventional image capture device will be 1227995 V. Description of the invention (3) __________ ~ Flashing (if necessary) and capture images at the same time. To learn the intensity adjustment method, first focus on the second light when pressing to the s 丨 position. After the focusing is completed, recompose the viewfinder or volume adjustment again as appropriate, and after the framing is completed, press the imaging button completely to the s 2 position. '2 The flash starts to adjust the intensity of the flash, and sends t = after the adjustment to perform image capture. Based on the above, the conventional method of adjusting the light intensity can be arranged as follows: Lamp Step S1 0: Start. Step S12: Press the image acquisition button 50 to 81 to perform the focusing action of the focusing subject. Step S1 4 · Recompose the view (or keep the original view), and press the imaging buttons 5 to S 2. Step S 1 8: Perform flash intensity adjustment. Step S20: Send out the adjusted flash and capture the image. Regarding the steps of adjusting the flash intensity, the 073 patent first pre-flashes the flash twice. The light sensing element senses the light intensity of the captured image at that time in two pre-flashes, and then analyzes to obtain the corresponding light intensity required by the flash at a predetermined intensity. The 2003 patent is to modify two pre-flashes to one pre-flash, and once to directly sense the captured image without flash. The technologies disclosed in the above two patents have improved the problems of no flash intensity adjustment system and expensive light integration. However, since the flash intensity adjustment is still performed for the entire captured image before digging the image, it is useful for framing.

第10頁 1227995Page 10 1227995

五時仍、發明說明（4) 對焦主體並非位於中心位置時，主體所 θ ^ ^ β獲传的閃光效果 ·、、、'不佳。舉例來說，當欲拍攝一人像時，觀移強體，因此會先對人體進行對焦。但為了整扣:體為 ’可能會將人體並非擺放於對焦時的對隹科音秀此時，由於習知閃光燈強度調整是 =汀偏度调整，因此，調整後的閃光強度可能1^仃不物’而人體所獲得的閃光效果並非最佳。發明内容】因此本發明之一目的係提供一種閃光燈強度調整系 $ ’可以適當的針對被擷取影像以及周遭光源調整間光燈、5度’改善習知技術僅具有固定閃光強度的問題。本發明之另一目的係提供一種閃光燈強度調整系統，應用在數位影像擷取裝置中，以取代應用光耦合器的習知技術，有效降低成本。本$明之另一目的係提供一種閃光燈強度調整系統，可以適當的針對被擷取影像的對焦主體以及周遭光源調整閃^燈的強度’改善習知技術僅針對整體擷取影像進行強度凋整的問題’使對焦主體的閃光效果最佳化。一種應用於一影像擷取裝置中之閃光燈強度調整系 1227995 五、發明說明（5) 統。該影像擷取裝置包含一閃光燈、一感光元件以及一對焦模組。該閃光燈用以發出複數種強度的閃光，該感光元件用以感測一外部影像，該外部影像包含一對焦主體，該對焦模組用以對該對焦主體進行焦距調整。該閃光燈強度調整系統包含一控制模組以及一強度計算模組。控制模組係用以在該對焦模組完成焦距調整後，產生一第一影像感測信號至該感光元件以觸發該感光元件感測該外部影像而產生一第一感光資料；之後產生一預閃信號至該閃光燈，使該閃光燈以一固定之第一功率發出閃光；最後產生一第二影像感測信號至該感光元件以觸發該感光元件感測在該第一功率所造成之閃光下之該外部影像而產生一第二感光資料。強度計算模組係用以根據該第一感光資料以及該第二感光資料，進行一閃光燈強度計算程序而獲得一第二功率。其中當影像擷取裝置於擷取該外部影像時，該閃光燈乃根據該第二功率發出閃光，以使該感光元件擷取在該第二功率所造成之閃光下之該外部影像。藉此，本發明係針對在對焦時進行閃光燈強度的控制，因此閃光燈的強度可以調整至最適合對焦主體狀態，相較於習知技術係於擷取影像時進行閃光燈強度控制，明顯具有較佳的閃光效果。關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。At 5 o'clock, description of the invention (4) When the focusing subject is not located at the center position, the flash effect obtained by the subject θ ^ ^ β is not good. For example, when you want to take a portrait, focus on the strong body, so focus on the human body first. But for the whole buckle: the body is' may not place the human body in the confrontation Keyingxiu when focusing. At this time, because the conventional flash intensity adjustment is equal to the tilt adjustment, the adjusted flash intensity may be 1 ^ Nothing 'and the human body's flash effect is not the best. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a flash intensity adjustment system, which can appropriately adjust an inter-light lamp for a captured image and a surrounding light source, and the 5 degree improvement conventional technology has only a problem of fixed flash intensity. Another object of the present invention is to provide a flash intensity adjustment system, which is applied to a digital image capture device to replace the conventional technique of applying an optical coupler, and effectively reduces the cost. Another purpose of the present invention is to provide a flash intensity adjustment system that can appropriately adjust the intensity of the flash light for the focused subject of the captured image and the surrounding light source. Question 'Optimize the flash effect of the focused subject. A flash intensity adjustment system used in an image capture device 1227995 V. Description of the invention (5) system. The image capture device includes a flash, a photosensitive element, and a pair of focus modules. The flash is used to emit flashes of multiple intensities. The photosensitive element is used to sense an external image. The external image includes a focusing subject. The focusing module is used to adjust the focus of the focusing subject. The flash intensity adjustment system includes a control module and an intensity calculation module. The control module is used to generate a first image sensing signal to the photosensitive element after the focus module completes the adjustment of the focal length to trigger the photosensitive element to sense the external image to generate a first photosensitive data; and then generate a pre- A flash signal to the flash, so that the flash fires at a fixed first power; and finally a second image sensing signal is generated to the photo sensor to trigger the photo sensor to detect the flash under the first power. The external image generates a second photosensitive data. The intensity calculation module is configured to perform a flash intensity calculation procedure to obtain a second power based on the first light sensitive data and the second light sensitive data. When the image capturing device captures the external image, the flash fires a flash according to the second power, so that the photosensitive element captures the external image under the flash caused by the second power. Therefore, the present invention is directed to controlling the intensity of the flash when focusing, so the intensity of the flash can be adjusted to the state most suitable for focusing the subject, which is obviously better than the conventional technique for controlling the intensity of the flash when capturing an image. Glitter effect. The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

第12頁 1227995 五、發明說明（6) 【實施方式】請參閱圖二’圖二係本發明影像擷取裝置1 〇及外部影像2 0之示意圖。本發明係揭露_種影像擷取裝置1 〇，用以擷取一外部影像2 0。外部影像2 〇包含一對焦主體2 1 0，影像擷取裝置1 0則包含一感光元件1 〇 2、一閃光燈1 〇 4、一對焦模組1 0 6、一取像按鍵1 〇 8 (圖二中未顯示）、以及一閃光燈強度調整系統1 1 0。感光元件102’如電_合元件（charge Couple Device， CCD)、互補金屬氧化物半導體（c〇mplementary Metal Oxide Semiconductor， CM0S)等，係具有感測外界光線的能力，因此可擷取外部影像2〇。如在傳統類比與，擷取裝置中的應用’則感光元件係採用前述的光耦合〜器。閃光燈1 04係當外界光源不足時，用以發出複數種D 度的閃光以補強外界光源。 * 對焦模組106,用以針對對焦主體21〇進行焦距 =避免外部影像應影耗取裝置_取後模糊 : =^鍵1〇8則設置有SO、S1、S2三個按壓位置，s 取 =、S1為按壓-半狀態、S2則為全壓狀取像知 =S。位置時’代表影像擷取裝置為待機狀 = 任何動作。當該取像按鍵被按壓至S1位置，匕Page 12 1227995 V. Description of the invention (6) [Embodiment] Please refer to FIG. 2 ′ FIG. 2 is a schematic diagram of the image capturing device 10 and the external image 20 of the present invention. The present invention discloses a kind of image capturing device 10 for capturing an external image 20. The external image 2 〇 includes a focusing subject 2 10, and the image capturing device 10 includes a light sensor 1 〇2, a flash 1 〇4, a focusing module 106, and an image acquisition button 1 〇8 (Figure (Not shown in 2), and a flash intensity adjustment system 1 1 0. Photosensitive element 102 ', such as a charge couple device (CCD), complementary metal oxide semiconductor (CM0S), etc., has the ability to sense external light, so it can capture external images 2 〇. For example, in the traditional analog and capture devices, the photo sensor uses the aforementioned optical coupling device. When the external light source is insufficient, the flash 10 04 is used to emit a plurality of D-degree flashes to supplement the external light source. * Focusing module 106 is used to focus on the focused subject 21〇 = to avoid the external image should be consumed by the device _ after taking the blur: = ^ key 108 is set with three pressing positions of SO, S1, S2, s to take =, S1 is the pressed-half state, and S2 is the full-pressure image acquisition = S. At the position 'means that the image capture device is in standby mode = any action. When the image capture button is pressed to the S1 position,

第13頁 1227995 五、發明說明（7) 置將進行對焦。當按壓至S2位置時，數位影像擷取裝置將發出閃光（視情況所需）並同時擷取影像。影像擷取裝置 1 0的對焦模組1 0 6所採用的對焦模式有中心點對焦以及多點對焦等多種模式。中心點對焦即是利用整體取景的中心點進行對焦；如果為多點對焦，則是在整體取景中列出許多對焦點，由使用者選擇欲對焦的點後再進行對焦。以下實施例乃採用中心點對焦方式。本發明的重點則在於閃光燈1 0 4的強度調整系統11 0，其包含了一控制模組11 2以及一強度計算模組11 4。本發明和習知技術其中一個不同之處，在於習知技術係於擷取影像時進行閃光燈的強度調整（取像按鍵係處於S2位置），而本發明則是在進行對焦時，進行閃光燈的強度調整（取像按鍵處於S1位置）。因此，本發明係在使用者利用影像擷取裝置1 0對對焦主體採取對焦動作時，也就是由對焦模組1 0 6向對焦主體21 0進行對焦（或稱焦距調整）時加以進行。控制模組1 1 2在對焦模組1 0 6完成焦距調整後，產生一第一影像感測信號至感光元件1 0 2以觸發感光元件1 0 2感測外部影像2 0而產生一第一感光資料。由於感光元件1 0 2係可進一步分為複數個晝素以感測外部影像2 0，因此便可針對每一畫素所感測之光強度資料（即第一感光資料）傳送至強度計算模組1 1 4，經過統計分析後而獲得外部影像2 0 在未閃光時的每一晝素光強度的長條圖分析 (Histogram) 〇Page 13 1227995 V. Description of the invention (7) The setting will focus. When pressed to the S2 position, the digital image capture device will flash (as needed) and capture the image at the same time. The focus modes used by the image capture device 10's focus module 1106 include center point focus and multi-point focus. Center point focusing is to use the center point of the overall framing to focus; if it is multi-point focusing, it lists a lot of focus points in the overall framing, and the user selects the point to focus before focusing. The following embodiments use the center point focusing method. The focus of the present invention is the intensity adjustment system 110 of the flash 104, which includes a control module 112 and an intensity calculation module 114. One of the differences between the present invention and the conventional technology is that the conventional technology adjusts the intensity of the flash when capturing an image (the image capture button is at the S2 position), while the present invention performs the flash when focusing. Intensity adjustment (image acquisition button is in S1 position). Therefore, the present invention is performed when the user uses the image capturing device 10 to focus on the focusing subject, that is, when the focusing module 10 6 performs focusing (or focus adjustment) on the focusing subject 21 0. The control module 1 1 2 generates a first image sensing signal to the light receiving element 1 0 2 after the focus adjustment of the focusing module 1 0 6 is completed to trigger the light receiving element 1 0 2 to sense the external image 2 0 and generate a first Sensitive data. Since the photosensitive element 102 is further divided into a plurality of day pixels to sense the external image 20, the light intensity data (ie, the first photosensitive data) sensed for each pixel can be transmitted to the intensity calculation module. 1 1 4. Obtain external image after statistical analysis 2 0 Histogram analysis of light intensity of each day when no flash

第14頁 1227995 五、發明說明（8)Page 14 1227995 V. Description of the invention (8)

接著控制模組1 1 2產生一預閃信號至閃光燈1 0 4，使閃光燈1 0 4以一第一功率發出閃光。此第一功率為預設之閃光強度，可設計為功率較低的閃光以降低數位影像擷取裝置1 0的耗電量。在產生預閃信號的同時，也產生一第二影像感測信號至感光元件1 0 2以觸發感光元件1 0 2感測在第一功率所造成之閃光下之外部影像2 0。同理，感光元件1 0 2 中每一晝素所感測之光強度資料，即一第二感光資料，將送至強度計算模組1 1 4統計分析成在預閃時每一晝素的光強度的長條圖分析。Then the control module 1 12 generates a pre-flash signal to the flash 10 104, so that the flash 10 104 emits a flash with a first power. This first power is a preset flash intensity and can be designed as a lower power flash to reduce the power consumption of the digital image capture device 10. When the pre-flash signal is generated, a second image sensing signal is also generated to the photosensitive element 102 to trigger the photosensitive element 102 to sense the external image 20 under the flash caused by the first power. In the same way, the light intensity data sensed by each day element in the photosensitive element 102, that is, a second light data, will be sent to the intensity calculation module 1 1 4 to be statistically analyzed into the light of each day element during the pre-flash. Bar graph analysis of intensity.

請參閱圖三，圖三係第一感光資料以及第二感光資料之長條圖分析示意圖。強度計算模組11 4，則根據該第一感光資料、該第二感光資料以及該第一功率，進行一閃光燈強度計算程序而獲得一第二功率。圖三中僅係舉一模擬數據以解釋本發明，其中橫軸代表晝素的感光強度，而縱軸則為具有相同感光強度的畫素數量。在長條圖分析中，由於本發明係先針對對焦主體進行對焦的同時進行預閃，因此晝素分佈最多的強度即是對焦主體所感受的光強度。本發明之強度計算程序，係預先設定閃光燈強度之一理想區域，並於該理想區域内設定一理想強度。比較第一感光資料、第二感光資料的長條圖後以及理想強度後，再根據閃光燈1 0 4發出預閃時所消耗的第一功率、預閃前的感光強度和預閃後的感光強度兩者間的比率A、以及預閃後的Please refer to Figure 3. Figure 3 is a bar graph analysis diagram of the first photosensitive data and the second photosensitive data. The intensity calculation module 114 performs a flash light intensity calculation program to obtain a second power based on the first light sensitive data, the second light sensitive data, and the first power. In Fig. 3, only one simulation data is used to explain the present invention, in which the horizontal axis represents the sensitivity of daylight and the vertical axis represents the number of pixels with the same sensitivity. In the histogram analysis, since the present invention first performs pre-flashing while focusing on the focusing subject, the intensity with the largest daylight distribution is the light intensity experienced by the focusing subject. In the intensity calculation program of the present invention, an ideal area of the flash intensity is set in advance, and an ideal intensity is set in the ideal area. After comparing the bar graphs of the first light sensitive data and the second light sensitive data, and after the ideal intensity, according to the first power consumed by the flash 104 before the pre-flash, the light intensity before the pre-flash and the light intensity after the pre-flash The ratio A between the two, and the pre-flash

第15頁校，，焦度可上影體焦對強亦有行憶對使及，具進記行，以路其到一進光組電使後加新閃模輯，焦外重出制邏裝對可未發控的改行明並前，中以。進發要取外置加能置本只擷此裝路功裝此者像。取電的取因用影果擷輯組擷，使於效像邏模像間當率光影的算影時以功閃於有計用段。二的加既度利一率第佳外中強者過功之最是置及用經二錄得以裝以使能第記獲可取組於可該此能組擷模由間錄以仍模像制取記可體算影控擷以則主計將述 1227995 五、發明說明（9) 感光強度和理想強度兩者間的比率B，即可外插得出閃光燈1 0 4發出該第二強度之閃光時所需之第二功率。閃光燈將根據該第二功率，當使用者完全按下快門後，閃光燈即發出相對應第二功率的閃光。由於此一功率所發出的閃光將使對焦主體具有理想的感光強度，因此即時對焦主體此時並非位於對焦點的位置，影像擷取裝置所擷取的影像中，對焦主體2 1 0仍能獲得理想的閃光效果。在此強調一點，上述長條圖分析為本發明之最佳具體實施例，然強度計算模組計算方式將不受此限。在本發明之其他具體實施例中，亦可應用直接感測對焦點所迴授之光強度，來進行分析，而獲得最適合對焦主體之光強度。此外，上述實施例係以中央點對焦的方式加以闡述。如果對焦模組係採用多點對焦之方式，則步驟亦相同。本發明強調的重點在於：利用對焦模組所設制之對焦點來進行對The calibration on page 15 can focus on the focus of the image, focus on the focus, but also have the ability to recall, and make a note of it. By way of it, you can add a new flash template to the power of the light group, and then re-focus the logic. Pretend to be clear about changes that may not be prosecuted before, China and Israel. To start, you need to take the external power-up device, and only capture this installation function. The power factor is captured by the video fruit capture group, so that the calculation of the rate of light and shadow between the effective logic logic and the image flashes in the useful section. The best addition of the two is the best rate. The best of the strong and the weakest is the best. The second record is used to install the second record to enable the first record to be obtained. Take note of the video control capture, the main plan will be described in 1227995 V. Description of the invention (9) The ratio B between the photosensitivity and the ideal intensity can be extrapolated to obtain the flash with the second intensity. Required second power. The flash will be based on this second power. When the user fully presses the shutter, the flash will emit a flash corresponding to the second power. Since the flash emitted by this power will make the focusing subject have ideal light intensity, the real-time focusing subject is not located at the focus point at this time. In the image captured by the image capturing device, the focusing subject 2 1 0 can still be obtained. Ideal flash effect. It is emphasized here that the above bar graph analysis is the best embodiment of the present invention, but the calculation method of the strength calculation module will not be limited to this. In other specific embodiments of the present invention, the light intensity feedback from the focus point can be directly used for analysis to obtain the light intensity most suitable for focusing the subject. In addition, the above-mentioned embodiment is described in a manner of focusing at the center point. If the focusing module uses multi-point focusing, the steps are the same. The important point emphasized by the present invention is: use the focusing point set by the focusing module to perform the alignment

第16頁 1227995 五、發明說明（ίο) 焦主體的對焦動作，於此同時，對對焦主體進行閃光燈的強度調整。因此在擷取影像時，不論對焦主體是否位於原先對焦點的位置，對焦主體都會獲得最好的閃光效果。接著詳述本發明在整個擷取影像過程中，進行對焦時同時進行閃光強度控制，以和習知技術作一明顯區隔。請參閱圖四，圖四係本發明閃光強度調整方法之流程圖。綜合以上所述，可將本發明之步驟整理如下：步驟S30 :對外部影像20之對焦主體210進行對焦（取像按鍵1 08按壓於S1位置）。步驟S3 2 :感光元件1 0 2感測外部影像2 0而產生一第一感光資料。步驟S34 ··閃光燈104以一第一強度發出閃光。步驟S3 6 :感光元件1 0 2感測在第一強度閃光下之外部影像 2 0而產生一第二感光資料。步驟S38 :強度計算模組11 4根據該第一感光資料以及該第二感光資料，進行一閃光燈強度計算程序而獲得一第二強度。步驟S39 :重新取景或保持原景，並按壓取像按鍵至S2位置。步驟S4 0 :閃光燈1 0 4根據該第二強度發出閃光，影像擷取裝置則擷取在該第二強度閃光下之外部影像 20°Page 16 1227995 V. Description of the invention (ίο) Focusing the focus of the subject, at the same time, adjust the intensity of the flash of the focus subject. Therefore, when capturing an image, the focused subject will obtain the best flash effect regardless of whether the focused subject is in the original focus position. Next, in detail, the present invention performs flash intensity control while focusing during the entire image capturing process, so as to distinguish it from the conventional technology. Please refer to FIG. 4, which is a flowchart of the flash intensity adjustment method of the present invention. In summary, the steps of the present invention can be organized as follows: Step S30: Focus on the focusing subject 210 of the external image 20 (the image capturing button 10 is pressed at the position S1). Step S3 2: The photosensitive element 102 senses the external image 20 and generates a first photosensitive data. Step S34 ... The flash 104 emits light at a first intensity. Step S36: The photosensitive element 102 senses the external image 20 under the first-intensity flash to generate a second photosensitive data. Step S38: The intensity calculation module 114 performs a flash intensity calculation procedure based on the first light sensitive data and the second light sensitive data to obtain a second light intensity. Step S39: Recompose the view or keep the original view, and press the acquisition button to the S2 position. Step S4 0: the flash 10 104 emits a flash according to the second intensity, and the image capture device captures an external image under the second intensity flash 20 °

第17頁 1227995 五、發明說明（11) 由於習知技術係在取像按鍵位於S 2位置的同時進行閃光燈的強度調整，而熟習此技藝者皆知，習知技術之感光元件擷取的乃是拍照時的整個外部影像的感光分佈，因此對應調整的將是整個外部影像。如果對焦主體（亦即拍攝主體）並非未於取景的正中央或是上述的對焦點中，則對焦主體獲得的閃光效果並非最佳。針對此一缺點，本發明乃在對焦主體進行對焦的同時，進行閃光燈的強度調整，之後再取景。因此，閃光效果針對對焦主體調整，較習知技術針對整個外部影像調整，將具有較好的閃光效果。藉由以上較佳具體實施例之詳述，係希望能更加清楚描述本發明之特徵與精神，而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地，其目的是希望能涵蓋各種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇内。Page 17 1227995 V. Description of the invention (11) Because the conventional technology is to adjust the intensity of the flash while the image capture button is located at the S 2 position, and those skilled in this art know that the photosensitive element extraction of the conventional technology is It is the light distribution of the entire external image when taking photos, so the corresponding adjustment will be the entire external image. If the subject in focus (that is, the subject) is not in the center of the frame or in the focus point described above, the flash effect obtained by the focus subject is not optimal. In view of this shortcoming, the present invention adjusts the intensity of the flash while focusing on the subject and then framing. Therefore, the flash effect is adjusted for the focused subject. Compared with the conventional technology for the entire external image adjustment, the flash effect will have a better flash effect. With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention may be more clearly described, rather than limiting the scope of the present invention with the preferred specific embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patent application for which the present invention is intended.

第18頁 1227995 圖式簡單說明【圖示簡單說明】圖一係習知閃光燈強度調整方法流程圖。圖二係本發明影像擷取裝置及外部影像之示意圖。圖三係第一感光資料以及第二感光資料之長條圖分析示意圖。圖四係本發明閃光強度調整方法之流程圖。【圖示標號說明】 10 影像擷取裝置 102 : 感光元件 104 閃光燈 106 ·· 對焦模組 108 取像按鍵 112: 控制模組 114 強度計算模組 2 0 ·· 外部影像 210 對焦主體 ❿Page 18 1227995 Simple description of the diagram [Simplified illustration of the diagram] Figure 1 is a flowchart of a conventional flash intensity adjustment method. FIG. 2 is a schematic diagram of an image capturing device and an external image of the present invention. Figure 3 is a bar graph analysis diagram of the first photosensitive data and the second photosensitive data. FIG. 4 is a flowchart of the flash intensity adjusting method of the present invention. [Illustration of label number] 10 image capturing device 102: light sensing element 104 flashing light 106 ·· focus mode group 108 image acquisition key 112: control mode group 114 intensity calculation mode group 2 0 ·· external image 210 focus main body ❿

第19頁Page 19

Claims

1227995 六、申請專利範圍 1、一種應用於一影像擷取裝置中之閃光燈強度調整系統，該影像擷取裝置包含一閃光燈、一感光元件以及一對焦模組，該閃光燈用以發出複數種強度的閃光，該感光元件用以感測一外部影像之感光強度，該對焦模組用以對該外部影像中一對焦主體進行焦距調整，該閃光燈強度調整系統包含：一控制模組，用以1227995 VI. Application Patent Scope 1. A flash intensity adjustment system applied to an image capture device. The image capture device includes a flash, a photosensitive element, and a focusing module. The flash is used to emit a plurality of intensity. Flash, the light sensing element is used to sense the light intensity of an external image, the focus module is used to adjust the focus of a focusing subject in the external image, and the flash intensity adjustment system includes: a control module for:

在該對焦模組完成焦距調整後，產生一第一影像感測信號至該感光元件以觸發該感光元件感測該外部影像而產生一第一感光資料；產生一預閃信號至該閃光燈，使該閃光燈以一第一功率發出閃光；以及產生一第二影像感測信號至該感光元件以觸發該感光元件感測在該第一功率造成之閃光下之該外部影像而產生一第二感光資料；以及一強度計算模組，用以After the focus module completes the focus adjustment, a first image sensing signal is generated to the photosensitive element to trigger the photosensitive element to sense the external image to generate a first photosensitive data; a pre-flash signal is generated to the flash, so that The flash emits light at a first power; and generates a second image sensing signal to the photosensitive element to trigger the photosensitive element to sense the external image under the flash caused by the first power to generate a second photosensitive data ; And a strength calculation module for

根據該第一感光資料、該第二感光資料以及該第一功率，進行一閃光燈強度計算程序而獲得一第二功率；其中當該影像擷取裝置擷取該外部影像時，該閃光燈乃根據該第二功率發出閃光。 2、如申請專利範圍第1項所述之閃光燈強度調整系統，其中該對焦模組係設置至少一對焦點。According to the first photosensitive data, the second photosensitive data, and the first power, a flash power calculation program is performed to obtain a second power; wherein when the image capturing device captures the external image, the flash is based on the The second power flashes. 2. The flash intensity adjustment system described in item 1 of the scope of patent application, wherein the focusing module is provided with at least one pair of focus points.

第20頁 1227995 六、申請專利範圍 3、如申請專利範圍第2項所述之閃光燈強度調整系統，其中在進行焦距調整時，該對焦主體係位於該對焦模組之該對焦點，當該影像擷取裝置擷取外部影像時，該對焦主體則非位於該對焦點。 4、如申請專利範圍第1項所述之閃光燈強度調整系統，其中該該感光元件係包含複數個晝素，以感測該外部影像所感受之光強度。 5、如申請專利範圍第4項所述之閃光燈強度調整系統，其中該第一感光資料係該對焦主體於未預閃時被該感光元件所感測之光強度，該第二感光資料係該對焦主體於預閃後被該感光元件所感測之光強度。 6、如申請專利範圍第5項所述之閃光燈強度調整系統，其中該強度計算模組係比較該第一感光資料以及該第二感光資料而獲得一比值。 7、如申請專利範圍第6項所述之閃光燈強度調整系統，其中該強度計算模組係藉由該比值推算該閃光燈發出一理想強度之閃光時所需之該第二功率。 8、如申請專利範圍第1項所述之閃光燈強度調整系統，Page 20 1227995 VI. Patent Application Range 3. The flash intensity adjustment system as described in item 2 of the patent application range, wherein the focus master system is located at the focus point of the focus module when performing focus adjustment. When the image is When the capturing device captures an external image, the focusing subject is not located at the focus point. 4. The flash intensity adjusting system as described in item 1 of the scope of the patent application, wherein the light sensing element includes a plurality of daylight elements to sense the light intensity experienced by the external image. 5. The flash intensity adjustment system as described in item 4 of the scope of the patent application, wherein the first light sensitive data is the light intensity sensed by the light sensitive element when the focusing subject is not pre-flashed, and the second light sensitive data is the focus The light intensity of the main body detected by the photosensitive element after pre-flashing. 6. The flash intensity adjustment system as described in item 5 of the scope of patent application, wherein the intensity calculation module compares the first photosensitive data with the second photosensitive data to obtain a ratio. 7. The flash intensity adjustment system as described in item 6 of the scope of patent application, wherein the intensity calculation module estimates the second power required by the flash to emit a flash of a desired intensity using the ratio. 8. The flash intensity adjustment system described in item 1 of the scope of patent application,

第21頁 1227995 六、申請專利範圍其中該感光元件係採用由一電搞合元件（Charge Couple Device， CCD)、一互補金屬氧化物半導體 (Complementary Metal Oxide Semiconductor, CMOS)以及一光搞合器（Photo Diode, PD)所組成之群組中一元件。 9、一種影像擷取裝置，用以擷取一外部影像，該外部影像包含一對焦主體，該影像擷取裝置包含：一感光元件，用以感測該外部影像之感光強度；一閃光燈，用以發出複數種強度的閃光；一對焦模組，用以針對該對焦主體進行焦距調整；一控制模組，用以在該對焦模組完成焦距調整後，產生一第一影像感測信號至該感光元件以觸發該感光元件感測該外部影像而產生一第一感光資料；產生一預閃信號至該閃光燈，使該閃光燈以一第一功率發出閃光；以及產生一第二影像感測信號至該感光元件以觸發該感光元件感測在該第一功率造成之閃光下之該外部影像，進而產生一第二感光資料；以及一強度計算模組，用以根據該第一感光資料以及該第二感光資料，進行一閃光燈強度計算程序而獲得一第二功率；其中當該影像擷取裝置擷取該外部影像時，該閃光燈Page 211227995 6. The scope of the patent application where the photosensitive element is a charge couple device (CCD), a complementary metal oxide semiconductor (CMOS) and a light coupler ( Photo Diode (PD). 9. An image capture device for capturing an external image, the external image including a focusing subject, the image capture device includes: a photosensitive element for sensing the light intensity of the external image; a flash, for A plurality of intensities of flashes are emitted; a focus module is used to adjust the focus of the focusing subject; a control module is used to generate a first image sensing signal to the focus module after the focus module has completed the focus adjustment The light-sensitive element generates a first light-sensitive data by triggering the light-sensitive element to sense the external image; generating a pre-flash signal to the flash, causing the flash to emit light at a first power; and generating a second image-sensing signal to The light-sensitive element triggers the light-sensitive element to sense the external image under the flash caused by the first power, thereby generating a second light-sensitive data; and an intensity calculation module, which is used for calculating the Two photo-sensing data to perform a flash intensity calculation procedure to obtain a second power; wherein when the image capturing device captures the external When the image of the flash

第22頁 1227995 六、申請專利範圍乃根據該第二功率發出閃光。 1 0、如申請專利範圍第9項所述之影像擷取裝置，其中該對焦模組係設置至少一對焦點。 11、如申請專利範圍第1 0項所述之影像擷取裝置，其中在進行焦距調整時，該對焦主體係位於該對焦模組之該對焦點，當該感光元件擷取外部影像時，該對焦主體則非位於該對焦點。 1 2、如申請專利範圍第9項所述之影像擷取裝置，其中該感光元件係包含複數個晝素以感測該外部影像所感受之光強度。 1 3、如申請專利範圍第1 2項所述之影像擷取裝置，其中該第一感光資料係該對焦主體於未預閃時被該感光元件所感測之光強度，該第二感光資料係該對焦主體於預閃後被該感光元件所感測之光強度。 1 4、如申請專利範圍第1 3項所述之影像擷取裝置，其中該強度計算模組係比較該第一感光資料以及該第二感光資料而獲得一比值。 1 5、如申請專利範圍第1 4項所述之影像擷取裝置，其中該Page 22 1227995 VI. Scope of patent application The flash is emitted based on the second power. 10. The image capturing device according to item 9 of the scope of patent application, wherein the focusing module is provided with at least one pair of focal points. 11. The image capture device as described in item 10 of the scope of patent application, wherein the focus master system is located at the focus point of the focus module when performing focus adjustment, and when the photosensitive element captures an external image, the The subject in focus is not in the focus point. 1 2. The image capturing device as described in item 9 of the scope of the patent application, wherein the photosensitive element comprises a plurality of daylight elements to sense the light intensity experienced by the external image. 1 3. The image capture device as described in item 12 of the scope of the patent application, wherein the first light sensitive data is the light intensity detected by the light sensitive element when the focusing subject is not pre-flashed, and the second light sensitive data is The light intensity of the focusing subject detected by the photosensitive element after pre-flashing. 14. The image capture device according to item 13 of the scope of patent application, wherein the intensity calculation module compares the first photosensitive data and the second photosensitive data to obtain a ratio. 15. The image capture device described in item 14 of the scope of patent application, wherein the

第23頁 1227995 六、申請專利範圍強度計算模組係藉由該比值推算該閃光燈發出一理想強度之閃光時所需之該第二功率。 1 6、如申請專利範圍第9項所述之影像擷取裝置，其中該感光元件係採用由一電揭合元件（Charge Couple Device， CCD)、一互補金屬氧化物半導體 (Complementary Metal Oxide Semiconductor， CMOS)以及一光搞合器（Photo Diode, PD)所組成之群組中一元件。Page 23 1227995 VI. Patent Application Range The intensity calculation module uses the ratio to estimate the second power required for the flash to emit a flash with a desired intensity. 16. The image capturing device as described in item 9 of the scope of patent application, wherein the photosensitive element is a charge couple device (CCD), a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) and a photodiode (PD).

1 7、一種應用於一影像擷取裝置中之閃光燈強度調整方法，該影像擷取裝置包含一閃光燈、一感光元件以及一對焦模組，該閃光燈用以發出複數種強度的閃光，該感光元件用以感測一外部影像之感光強度，該外部影像包含一對焦主體，該對焦模組用以對該對焦主體進行焦距調整，該閃光燈強度調整方法包含：在完成焦距調整後，感測該外部影像而產生一第一感光資料；以一第一功率發出閃光；17. A flash intensity adjustment method applied in an image capture device, the image capture device includes a flash, a photosensitive element, and a focusing module, the flash is used to emit a plurality of flashes of the intensity, the photosensitive element It is used to sense the light intensity of an external image. The external image includes a focusing subject. The focusing module is used to adjust the focus of the focusing subject. The flash intensity adjustment method includes: after the focus adjustment is completed, sensing the external The image generates a first photosensitive data; emits a flash with a first power;

感測在該第一功率造成之閃光下之該外部影像，進而產生一第二感光資料；以及根據該第一感光資料以及該第二感光資料，進行一閃光燈強度計算程序而獲得一第二功率；以及根據該第二功率發出閃光，並擷取在該第二功率造Sensing the external image under the flash caused by the first power, thereby generating a second light sensitive data; and performing a flash intensity calculation program to obtain a second power based on the first light sensitive data and the second light sensitive data And emit a flash according to the second power, and capture the light at the second power.

第24頁 1227995 六、申請專利範圍成之閃光下之該外部影像。 1 8、如申請專利範圍第1 7項所述之閃光燈強度調整方法，其中在進行焦距調整時，該對焦主體係位於該對焦模組之一對焦點，當該影像擷取裝置擷取外部影像時，該對焦主體則非位於該對焦點。，像法影方部整外調該度測強感燈以光素閃晝之個述數所複項含 1—•包第係圍件範元利光光專感之請該受中感如其所度強，感法該方被整時調閃度預強未燈於光體閃主之焦述對所該項係 9 1料第資圍光範感利一專第請該申中如其主 JUU'' 隹C 對該係。料度資強光光感之二測第感該所，件度元強光光感之該測被感後所閃件預元於光體，以法料方資整光調感度一強第燈該光較。閃比值之係比述序一所程得項算獲 ο 2 計而第度料圍強資範燈光利光感專閃二請該第申中該如其及法出方發整燈調光度閃強該。燈算率光推功閃值二之比第述該該所由之項藉需 2係所第度時圍強光範燈閃利光之專閃度青亥金 =口士一口 2IV 申中想如其理Page 24 1227995 VI. Patent Application The external image under the flash of light. 18. The flash intensity adjustment method as described in item 17 of the scope of patent application, wherein when performing focal length adjustment, the focus master system is located at a focus point of the focusing module, and when the image capturing device captures an external image When the focus subject is not in the focus point. The intensity of the intensity-measuring lamp is adjusted by the number of light elements in the light and light, including 1— • Bao Di series of enclosures. Fan Yuanli, the light and light sense, please accept the feeling as it is The degree is strong, and the method is to adjust the flashing degree at all times to pre-strengthen the light. The main focus of the light flashes is on the main focus of the subject. '隹 C to the department. It is expected that the second test of the strong light and light sense of the second place will be the first place. After the test of the strong light and light sense of the unit, the flashed parts will be pre-arranged in the light body. The light comparison. The ratio of the flash ratio is calculated by comparing the sequence of the first order and the second one, and the first degree of material is strong. The light and the light are sensed. The second is requested. The request should be in accordance with the law and the French company. . The calculation rate of light is the ratio of light pushing power and the flash value of the second. The items mentioned above should be borrowed. The time of the 2nd place. The strong light.

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