TW201916670A - 曝光方法、電子裝置與主從式系統 - Google Patents

曝光方法、電子裝置與主從式系統 Download PDF

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Publication number
TW201916670A
TW201916670A TW107126454A TW107126454A TW201916670A TW 201916670 A TW201916670 A TW 201916670A TW 107126454 A TW107126454 A TW 107126454A TW 107126454 A TW107126454 A TW 107126454A TW 201916670 A TW201916670 A TW 201916670A
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Taiwan
Prior art keywords
image
exposure
processor
circuit
images
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TW107126454A
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English (en)
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TWI719332B (zh
Inventor
張耕力
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香港商印芯科技股份有限公司
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Priority to US16/264,706 priority Critical patent/US10990781B2/en
Publication of TW201916670A publication Critical patent/TW201916670A/zh
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    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/147—Details of sensors, e.g. sensor lenses
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    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
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    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
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    • G11C7/1078—Data input circuits, e.g. write amplifiers, data input buffers, data input registers, data input level conversion circuits
    • G11C7/1096—Write circuits, e.g. I/O line write drivers
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Abstract

曝光方法、電子裝置與主從式系統。電子裝置包括影像擷取電路以及耦接至影像擷取電路的處理器。處理器取得曝光指令以及第一數量。處理器根據曝光指令，控制影像擷取電路進行曝光以擷取一影像。所述處理器判斷所述影像的數量是否達到第一數量。當所述影像的數量未達到第一數量時，所述處理器再次執行控制影像擷取電路進行曝光以擷取所述影像的運作。當所述影像的數量達到第一數量時，處理器停止控制影像擷取電路進行曝光。

Description

曝光方法、電子裝置與主從式系統
本發明是有關於一種曝光方法、電子裝置與主從式系統。
一般來說，傳統的影像感測器(或影像擷取電路)應用在相機中時，若使用者要即時觀看到相機捕捉到的影像，相機中的影像感測器需連續地曝光並維持一定的幀率(frame per second，fps)。然而在非人眼觀看的應用(例如：指紋辨識，指紋偵測等)中，持續且穩定的幀率並非必要的條件。在此情況下，若影像感測器持續地進行曝光，會造成裝置不必要的耗電。
本發明提供一種曝光方法、電子裝置與主從式系統，可以有效地控制影像擷取電路曝光的時間，藉此避免不必要的曝光而擷取過多的影像，並有效地降低裝置的耗電量。
本發明提出一種電子裝置，所述電子裝置包括影像擷取電路以及耦接至影像擷取電路的處理器。所述處理器取得曝光指令以及第一數量。所述處理器根據所述曝光指令，控制所述影像擷取電路進行曝光以擷取影像。所述處理器判斷所述影像的數量是否達到所述第一數量。當所述影像的數量未達到所述第一數量時，所述處理器再次執行控制所述影像擷取電路進行曝光以擷取所述影像的運作。當所述影像的數量達到所述第一數量時，所述處理器停止控制所述影像擷取電路進行曝光。
本發明提出一種曝光方法，用於電子裝置，所述電子裝置包括影像擷取電路以及處理器，所述方法包括：藉由所述處理器取得曝光指令以及第一數量；藉由所述處理器根據所述曝光指令，控制所述影像擷取電路進行曝光以擷取影像；藉由所述處理器判斷所述影像的數量是否達到所述第一數量；當所述影像的數量未達到所述第一數量時，藉由所述處理器再次執行控制所述影像擷取電路進行曝光以擷取所述影像的步驟；以及當所述影像的數量達到所述第一數量時，藉由所述處理器停止控制所述影像擷取電路進行曝光。
本發明提出一種主從式系統，包括：主裝置與從裝置。主裝置具有第一介面。從裝置具有第二介面以及影像擷取電路。第二介面電性連接至第一介面。所述從裝置控制所述影像擷取電路進行曝光以擷取多個影像。所述主裝置提供讀取指令以及選擇訊號至所述從裝置。所述從裝置根據所述讀取指令以及所述選擇訊號，提供所述多個影像中的至少一第一影像至所述主裝置。在提供所述多個影像中的所述第一影像至所述主裝置的運作中，當所述從裝置停止接收到所述選擇訊號時，所述從裝置停止執行控制所述影像擷取電路進行曝光以擷取所述多個影像的運作以及停止執行提供所述多個影像中的所述第一影像至所述主裝置的運作。
本發明提出一種曝光方法，用於主從式系統，所述主從式系統包括主裝置以及從裝置，所述主裝置具有第一介面，所述從裝置具有第二介面以及影像擷取電路，所述第二介面電性連接至所述第一介面，所述方法包括：藉由所述從裝置控制所述影像擷取電路進行曝光以擷取多個影像；藉由所述主裝置提供讀取指令以及選擇訊號至所述從裝置；藉由所述從裝置根據所述讀取指令以及所述選擇訊號，提供所述多個影像中的至少一第一影像至所述主裝置藉；以及在提供所述多個影像中的所述第一影像至所述主裝置的步驟中，當所述從裝置停止接收到所述選擇訊號時，藉由所述從裝置停止執行控制所述影像擷取電路進行曝光以擷取所述多個影像的步驟以及停止執行提供所述多個影像中的所述第一影像至所述主裝置的步驟。
基於上述，本發明的曝光方法、電子裝置與主從式系統，可以有效地控制影像擷取電路曝光的時間，藉此避免不必要的曝光而擷取過多的影像，並有效地降低裝置的耗電量。
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。
現將詳細參考本發明之示範性實施例，在附圖中說明所述示範性實施例之實例。另外，凡可能之處，在圖式及實施方式中使用相同標號的元件/構件代表相同或類似部分。
以下以多個實施例來描述本發明的曝光方法。
[第一實施例]
圖1是依照本發明的一實施例所繪示的電子裝置的示意圖。
請參照圖1，電子裝置100包括處理器20、影像擷取電路22、暫存器24以及輸出電路26。其中，影像擷取電路22、暫存器24以及輸出電路26分別耦接至處理器20。電子裝置100例如是手機、平板電腦、筆記型電腦等電子裝置，在此不設限。
處理器20可以是中央處理器（Central Processing Unit，CPU），或是其他可程式化之一般用途或特殊用途的微處理器（Microprocessor）、數位信號處理器（Digital Signal Processor，DSP）、可程式化控制器、特殊應用積體電路（Application Specific Integrated Circuit，ASIC）或其他類似元件或上述元件的組合。
影像擷取電路22是用以擷取一或多張影像。舉例來說，影像擷取電路22可以配備有電荷耦合元件（Charge Coupled Device，CCD）、互補性氧化金屬半導體（Complementary Metal-Oxide Semiconductor，CMOS）元件或其他種類的感光元件的攝像鏡頭，並且可以用以曝光並擷取至少一影像。
暫存器24可以是任何型態的固定或可移動隨機存取記憶體（random access memory，RAM）、唯讀記憶體（read-only memory，ROM）、快閃記憶體（flash memory）或類似元件或上述元件的組合。
輸出電路26主要用於輸出影像擷取電路22所擷取的影像。輸出電路26例如是用於將資料傳輸給其他電子裝置的傳輸介面，或者是用於顯示影像擷取電路22所擷取的影像的顯示裝置，在此並不做限制。
在本範例實施例中，電子裝置100的還包括儲存電路(未繪示)。電子裝置100的儲存電路中儲存有多個程式碼片段，在上述程式碼片段被安裝後，會由處理器20來執行。例如，電子裝置100的儲存電路中包括多個模組，藉由這些模組來分別執行電子裝置100的各個運作，其中各模組是由一或多個程式碼片段所組成。然而本發明不限於此，電子裝置100的各個運作也可以是使用其他硬體形式的方式來實現。
圖2是依照本發明的第一實施例所繪示的曝光方法的流程圖。
請同時參照圖1與圖2，在本實施例中，處理器20可以取得使用者輸入(或下達)的曝光指令以及第一數量(步驟S201)。其中，第一數量是指欲擷取的影像的數量。在一實施例中，第一數量是被包括在曝光指令中。然而在另一實施例中，暫存器24可以預先取得使用者輸入的第一數量，並且將此第一數量預先儲存在暫存器24中以供處理器20進行存取。
在處理器20接收到曝光指令後，會根據此曝光指令控制影像擷取電路22進行曝光以擷取影像(步驟S203)。接著，處理器20會暫存所擷取到的影像於暫存器24，並且停止控制影像擷取電路22進行曝光(即，停止控制影像擷取電路22擷取影像)(步驟S205)。之後，處理器20會判斷是否透過輸出電路26輸出暫存於暫存器24中的影像(步驟S207)。
當處理器20接收到使用者下達的輸出指令或從外部接收到輸出指令時，處理器20會根據此輸出指令，透過輸出電路26輸出暫存於暫存器24中的影像(步驟S209)。例如，可以透過輸出電路26輸出暫存於暫存器24中的影像以將該影像顯示在螢幕，或者是透過輸出電路26輸出暫存於暫存器24中的影像至另一裝置。此外，前述步驟S207中，當處理器20沒有接收到前述的輸出指令時，處理器20不會透過輸出電路26輸出暫存於暫存器24中的影像，並且當暫存器24剩餘可用容量不足以儲存下一張影像時會讓影像擷取電路22維持在停止曝光的狀態(即，返回步驟S205)。
而在處理器20會根據輸出指令透過輸出電路26輸出暫存於暫存器24中的影像(即，步驟S209)之後，處理器20會判斷影像擷取電路22進行曝光後所擷取到的影像的數量是否達到前述的第一數量(步驟S211)。若影像擷取電路22進行曝光後所擷取到的影像的數量尚未達到前述的第一數量，則圖2的流程會返回步驟S203以讓處理器20控制影像擷取電路22再次進行曝光以擷取影像，並且可以再執行前述的步驟S205至步驟S211。然而，在步驟S211中，若處理器20判斷影像擷取電路22進行曝光後所擷取到的影像的數量已達到前述的第一數量，則處理器20會停止控制影像擷取電路22進行曝光(步驟S213)。
藉由上述方式，本發明的第一實施例可以設定影像擷取電路22所欲取得影像的數量，避免影像擷取電路22擷取過多的影像。此外，本發明的第一實施例在影像擷取電路22擷取到影像後會直接停止曝光且不會立即地再擷取下一張影像，而是在輸出前述已擷取到的影像後，影像擷取電路22才會再擷取下一張影像，藉此可以避免影像擷取電路22一直曝光(或一直擷取影像)造成電子裝置電力的消耗。
[第二實施例]
圖3是依照本發明的一實施例所繪示的主從式系統的示意圖。
請參照圖3，主從式系統1000包括主裝置200以及從裝置300。主裝置200以及從裝置300例如可以分別包括處理器(未繪示)以及儲存電路(未繪示)。在主裝置200以及從裝置300中，儲存電路可以耦接至處理器。其中，主裝置200以及從裝置300例如是手機、平板電腦、筆記型電腦等電子裝置，在此不設限。此外，在其他實施例中，主裝置200以及從裝置300也可以包括其他更多的元件。特別是，在其他實施例中，主裝置200以及從裝置300也可以被配置在同一個裝置中。需說明的示，雖然圖3僅繪示一個主裝置200連接至一個從裝置300，但本發明不限於此。在其他實施例中，一個主裝置200可以連接至多個從裝置300。
處理器可以是與第一實施例中處理器20相類似的元件，在此不再贅述。儲存電路可以是與第一實施例中電子裝置100的儲存電路相類似的元件，在此不再贅述。此外，在本範例實施例中，從裝置300還包括耦接至從裝置300的處理器的影像擷取電路30。而影像擷取電路30可以是與第一實施例中影像擷取電路22相類似的元件，在此不再贅述。
在本實施例中，主裝置200具有介面50(亦稱為，第一介面)，從裝置300具有介面60(亦稱為，第二介面)。其中，第一介面與第二介面彼此電性連接使得主裝置200可以與從裝置300進行資料的傳輸。在本範例實施例中，介面50與介面60分別是串列週邊介面(Serial Peripheral Interface，SPI)。其中，一個串列週邊介面會具有從選擇(Select Slave，SS)接腳、串列時脈(Serial Clock，SCLK)接腳、主輸出從輸入(Master Output Slave Input，MOSI)接腳以及主輸入從輸出(Master Input Slave Output，MISO)接腳。而當介面50電性連接介面60時，主裝置200的SS接腳會電性連接至從裝置300的SS接腳，主裝置200的SCLK接腳會電性連接至從裝置300的SCLK接腳，主裝置200的MOSI接腳會電性連接至從裝置300的MOSI接腳，且主裝置200的MISO接腳會電性連接至從裝置300的MISO接腳。
在本範例實施例中，主裝置200與從裝置300的儲存電路中儲存有多個程式碼片段，在上述程式碼片段被安裝後，會由主裝置200與從裝置300的處理器來執行。例如，主裝置200與從裝置300的儲存電路中包括多個模組，藉由這些模組來分別執行主從式系統1000的各個運作，其中各模組是由一或多個程式碼片段所組成。然而本發明不限於此，上述的各個運作也可以是使用其他硬體形式的方式來實現。此外，主裝置200與從裝置300的處理器也可以用於控制主裝置200與從裝置300之間資料的傳輸。
圖4是依照本發明的第二實施例所繪示的曝光方法的流程圖。圖5是依照本發明的一實施例所繪示的SPI的訊號傳輸的示意圖。
請同時參照圖4與圖5，首先，如圖5所示，主裝置200會藉由SS接腳提供選擇訊號、藉由SCLK接腳提供時脈訊號以及藉由MOSI接腳提供曝光指令cmd1至從裝置300(步驟S401)。如圖5所示，所述選擇訊號例如是將原本SS接腳中處於高電位的訊號調整為低電位的訊號，藉此讓從裝置300得知其已被主裝置200所選擇。在圖5中，低電位訊號是位於時間點T1與時間點T2之間。此外，步驟S401的時脈訊號包括一時脈週期C1。
之後，從裝置300會根據前述步驟S401的曝光指令cmd1、選擇訊號以及時脈訊號，控制影像擷取電路30進行曝光以擷取多個影像(步驟S403)。例如，在時間點T3，從裝置300會根據前述的曝光指令cmd1、選擇訊號以及時脈訊號，將影像擷取電路30的一曝光狀態ES從低電位調整為高電位，藉此致能影像擷取電路30的曝光功能以讓影像擷取電路30開始曝光並擷取影像。而擷取到的影像可以儲存在從裝置300的一暫存器(未繪示)中。
之後，主裝置200還會再藉由SS接腳提供選擇訊號、藉由SCLK接腳提供時脈訊號以及藉由MOSI接腳提供讀取指令cmd2至從裝置300(步驟S405)。如圖5所示，所述選擇訊號例如是將原本SS接腳中處於高電位的訊號在時間點T4調整為低電位的訊號，藉此讓從裝置300得知其已被主裝置200所選擇。在圖5中，低電位訊號是位於時間點T4與時間點T5之間。此外，主裝置200會持續地提供包括時脈週期C2~C10的時脈訊號給從裝置300。
之後，從裝置300會根據讀取指令cmd2、前述的選擇訊號以及時脈訊號，藉由MISO接腳提供影像擷取單元30擷取的多個影像中的影像D1~D6(統稱為，第一影像)至主裝置200(步驟S407)。並且在提供前述的第一影像的過程中，從裝置300會判斷是否停止接收到選擇訊號(步驟S409)。換句話說，從裝置300會判斷SS接腳中處於低電位的訊號是否被恢復(或調整)為高電位。
假設從裝置300判斷SS接腳中的訊號一直處於低電位，則從裝置300會判斷從裝置300持續地接收到選擇訊號。此時，從裝置300會根據前述的曝光指令cmd1、選擇訊號以及時脈訊號，控制影像擷取電路30持續地進行曝光以擷取多個影像(步驟S411)，並將擷取到的影像持續地提供給主裝置200(即，返回步驟S407)。
然而，在提供前述的第一影像的過程中，當從裝置300判斷SS接腳中的訊號從低電位被調整為高電位時(例如，在時間點T5)，則從裝置300會判斷從裝置300停止接收到接收到選擇訊號。此時，從裝置300會停止執行控制影像擷取電路30進行曝光的步驟以及停止執行提供前述第一影像至主裝置200的步驟(步驟S413)。其中，停止執行控制影像擷取電路30進行曝光以擷取影像的步驟例如是在時間點T6將影像擷取電路30的曝光狀態ES從高電位調整為低電位，藉此關閉影像擷取電路30的曝光功能以讓影像擷取電路30停止曝光與停止擷取影像。此外，停止執行提供前述第一影像至主裝置200的步驟例如是從裝置300不藉由MISO接腳提供影像至主裝置200。
藉由上述方式，本發明的第二實施例可以讓從裝置300根據主裝置200下達的選擇訊號來判斷何時需開啟影像擷取電路30進行曝光的功能或者關閉影像擷取電路30進行曝光的功能，藉此避免從裝置300的影像擷取電路30執行無謂的曝光而造成電力的損耗。
綜上所述，本發明的曝光方法、電子裝置與主從式系統，可以有效地控制影像擷取電路曝光的時間，藉此避免不必要的曝光而擷取過多的影像，並有效地降低裝置的耗電量。
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。
100‧‧‧電子裝置
20‧‧‧處理器
22‧‧‧影像擷取電路
24‧‧‧暫存器
26‧‧‧輸出電路
S201‧‧‧處理器取得曝光指令以及第一數量的步驟
S203‧‧‧處理器根據曝光指令，控制影像擷取電路進行曝光以擷取影像的步驟
S205‧‧‧處理器暫存前述影像於暫存器並且停止控制影像擷取電路進行曝光的步驟
S207‧‧‧處理器判斷是否透過輸出電路輸出暫存於暫存器中的影像的步驟
S209‧‧‧當處理器接收到輸出指令時，處理器根據輸出指令透過輸出電路輸出暫存於暫存器中的影像的步驟
S211‧‧‧處理器判斷前述影像的數量是否達到第一數量的步驟
S213‧‧‧處理器停止控制影像擷取電路進行曝光的步驟
1000‧‧‧主從式系統
200‧‧‧主裝置
300‧‧‧從裝置
30‧‧‧影像擷取電路
50、60‧‧‧介面
SS、SCLK、MOSI、MISO‧‧‧接腳
S401‧‧‧主裝置提供曝光指令、選擇訊號以及時脈訊號至從裝置的步驟
S403‧‧‧從裝置根據曝光指令、選擇訊號以及時脈訊號，控制影像擷取電路進行曝光以擷取多個影像的步驟
S405‧‧‧主裝置提供讀取指令、選擇訊號以及時脈訊號至從裝置的步驟
S407‧‧‧從裝置根據讀取指令、選擇訊號以及時脈訊號，提供前述多個影像中的至少一第一影像至主裝置的步驟
S409‧‧‧從裝置判斷是否停止接收到選擇訊號的步驟
S411‧‧‧從裝置根據曝光指令、選擇訊號以及時脈訊號，控制影像擷取電路進行曝光以擷取多個影像的步驟
S413‧‧‧從裝置停止執行控制影像擷取電路進行曝光以擷取影像以及停止執行提供第一影像至主裝置的步驟
T1~T6‧‧‧時間點
C1~C10‧‧‧時脈週期
cmd1、cmd2‧‧‧指令
D1~D6‧‧‧影像
ES‧‧‧曝光狀態
圖1是依照本發明的一實施例所繪示的電子裝置的示意圖。 圖2是依照本發明的第一實施例所繪示的曝光方法的流程圖。 圖3是依照本發明的一實施例所繪示的主從式系統的示意圖。 圖4是依照本發明的第二實施例所繪示的曝光方法的流程圖。 圖5是依照本發明的一實施例所繪示的SPI的訊號傳輸的示意圖。

Claims (16)

  1. 一種電子裝置，包括： 一影像擷取電路；以及 一處理器，耦接至所述影像擷取電路，其中 所述處理器取得一曝光指令以及一第一數量， 所述處理器根據所述曝光指令，控制所述影像擷取電路進行曝光以擷取一影像， 所述處理器判斷所述影像的數量是否達到所述第一數量， 當所述影像的數量未達到所述第一數量時，所述處理器再次執行控制所述影像擷取電路進行曝光以擷取所述影像的運作，以及 當所述影像的數量達到所述第一數量時，所述處理器停止控制所述影像擷取電路進行曝光。
  2. 如申請專利範圍第1項所述的電子裝置，其中所述曝光指令包括所述第一數量。
  3. 如申請專利範圍第1項所述的電子裝置，其中所述電子裝置還包括： 一暫存器，耦接至所述處理器，其中在取得所述曝光指令以及所述第一數量的運作之前， 所述暫存器取得所述第一數量並且儲存所述第一數量。
  4. 如申請專利範圍第1項所述的電子裝置，其中所述電子裝置還包括： 一輸出電路，耦接至所述處理器；以及 一暫存器，耦接至所述處理器，其中在控制所述影像擷取電路進行曝光以擷取所述影像的運作之後， 所述處理器暫存所述影像於所述暫存器並且停止控制所述影像擷取電路進行曝光， 所述處理器判斷是否透過所述輸出電路輸出暫存於所述暫存器中的所述影像， 當所述處理器接收到一輸出指令且所述影像的數量未達到所述第一數量時，所述處理器根據所述輸出指令透過所述輸出電路輸出暫存於所述暫存器中的所述影像，並且再次執行控制所述影像擷取電路進行曝光以擷取所述影像的運作，以及 當所述處理器接收到所述輸出指令且所述影像的數量達到所述第一數量時，所述處理器根據所述輸出指令透過所述輸出電路輸出暫存於所述暫存器中的所述影像，並且不控制所述影像擷取電路再次進行曝光。
  5. 一種曝光方法，用於一電子裝置，所述電子裝置包括一影像擷取電路以及一處理器，所述方法包括： 藉由所述處理器取得一曝光指令以及一第一數量； 藉由所述處理器根據所述曝光指令，控制所述影像擷取電路進行曝光以擷取一影像； 藉由所述處理器判斷所述影像的數量是否達到所述第一數量； 當所述影像的數量未達到所述第一數量時，藉由所述處理器再次執行控制所述影像擷取電路進行曝光以擷取所述影像的步驟；以及 當所述影像的數量達到所述第一數量時，藉由所述處理器停止控制所述影像擷取電路進行曝光。
  6. 如申請專利範圍第5項所述的曝光方法，其中所述曝光指令包括所述第一數量。
  7. 如申請專利範圍第5項所述的曝光方法，其中所述電子裝置還包括一暫存器，其中在取得所述曝光指令以及所述第一數量的步驟之前，所述方法還包括： 藉由所述暫存器取得所述第一數量並且儲存所述第一數量。
  8. 如申請專利範圍第5項所述的曝光方法，其中所述電子裝置還包括一輸出電路以及一暫存器，其中在控制所述影像擷取電路進行曝光以擷取所述影像的步驟之後，所述方法還包括： 藉由所述處理器暫存所述影像於所述暫存器並且停止控制所述影像擷取電路進行曝光； 藉由所述處理器判斷是否透過所述輸出電路輸出暫存於所述暫存器中的所述影像； 當所述處理器接收到一輸出指令且所述影像的數量未達到所述第一數量時，藉由所述處理器根據所述輸出指令透過所述輸出電路輸出暫存於所述暫存器中的所述影像，並且再次執行控制所述影像擷取電路進行曝光以擷取所述影像的步驟；以及 當所述處理器接收到所述輸出指令且所述影像的數量達到所述第一數量時，藉由所述處理器根據所述輸出指令透過所述輸出電路輸出暫存於所述暫存器中的所述影像，並且不控制所述影像擷取電路再次進行曝光。
  9. 一種主從式系統，包括： 一主裝置，具有一第一介面；以及 一從裝置，具有一第二介面以及一影像擷取電路，所述第二介面電性連接至所述第一介面，其中 所述從裝置控制所述影像擷取電路進行曝光以擷取多個影像， 所述主裝置提供一讀取指令以及一選擇訊號至所述從裝置， 所述從裝置根據所述讀取指令以及所述選擇訊號，提供所述多個影像中的至少一第一影像至所述主裝置，以及 在提供所述多個影像中的所述第一影像至所述主裝置的運作中，當所述從裝置停止接收到所述選擇訊號時，所述從裝置停止執行控制所述影像擷取電路進行曝光以擷取所述多個影像的運作以及停止執行提供所述多個影像中的所述第一影像至所述主裝置的運作。
  10. 如申請專利範圍第9項所述的主從式系統，其中在控制所述影像擷取電路進行曝光以擷取所述多個影像的運作之前， 所述主裝置提供一曝光指令以及所述選擇訊號至所述從裝置，以及 所述從裝置根據所述曝光指令以及所述選擇訊號，執行控制所述影像擷取電路進行曝光以擷取所述多個影像的運作。
  11. 如申請專利範圍第10項所述的主從式系統，其中在提供所述曝光指令以及所述選擇訊號至所述從裝置的運作中以及在提供所述讀取指令以及所述選擇訊號至所述從裝置的運作中， 所述主裝置提供一時脈訊號至所述從裝置，所述從裝置根據所述時脈訊號執行控制所述影像擷取電路進行曝光以擷取所述多個影像的運作以及提供所述多個影像中的所述第一影像至所述主裝置的運作。
  12. 如申請專利範圍第11項所述的主從式系統，其中所述第一介面與所述第二介面是串列週邊介面(Serial Peripheral Interface，SPI)。
  13. 一種曝光方法，用於一主從式系統，所述主從式系統包括一主裝置以及一從裝置，所述主裝置具有一第一介面，所述從裝置具有一第二介面以及一影像擷取電路，所述第二介面電性連接至所述第一介面，所述方法包括： 藉由所述從裝置控制所述影像擷取電路進行曝光以擷取多個影像； 藉由所述主裝置提供一讀取指令以及一選擇訊號至所述從裝置； 藉由所述從裝置根據所述讀取指令以及所述選擇訊號，提供所述多個影像中的至少一第一影像至所述主裝置藉；以及 在提供所述多個影像中的所述第一影像至所述主裝置的步驟中，當所述從裝置停止接收到所述選擇訊號時，藉由所述從裝置停止執行控制所述影像擷取電路進行曝光以擷取所述多個影像的步驟以及停止執行提供所述多個影像中的所述第一影像至所述主裝置的步驟。
  14. 如申請專利範圍第13項所述的曝光方法，其中在控制所述影像擷取電路進行曝光以擷取所述多個影像的步驟之前，所述方法還包括： 藉由所述主裝置提供一曝光指令以及所述選擇訊號至所述從裝置；以及 藉由所述從裝置根據所述曝光指令以及所述選擇訊號，執行控制所述影像擷取電路進行曝光以擷取所述多個影像的步驟。
  15. 如申請專利範圍第14項所述的曝光方法，其中在提供所述曝光指令以及所述選擇訊號至所述從裝置的步驟中以及在提供所述讀取指令以及所述選擇訊號至所述從裝置的步驟中，所述方法還包括： 藉由所述主裝置提供一時脈訊號至所述從裝置；以及 藉由所述從裝置根據所述時脈訊號執行控制所述影像擷取電路進行曝光以擷取所述多個影像的步驟以及提供所述多個影像中的所述第一影像至所述主裝置的步驟。
  16. 如申請專利範圍第15項所述的曝光方法，其中所述第一介面與所述第二介面是串列週邊介面(Serial Peripheral Interface，SPI)。
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