TWI709920B - Circuit and information processing device for accelerating fingerprint unlocking - Google Patents
Circuit and information processing device for accelerating fingerprint unlocking Download PDFInfo
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Abstract
本發明主要揭示一種加速指紋解鎖的電路,其應用於具有應用處理器、觸控芯片、指紋辨識芯片、顯示驅動芯片、以及快閃記憶體芯片的一電子裝置之中,且包括一邏輯單元、一第一信號選擇單元、以及一第二信號選擇單元。在應用本發明之加速指紋解鎖的電路的情況下,指紋辨識芯片便可以在所述應用處理器被喚醒的過程中同時執行指紋圖像的採集,使得應用處理器被喚醒之後直接讀取指紋圖像的採集數據,藉此方式對休眠狀態的電子裝置進行快速喚醒及指紋解鎖。 The present invention mainly discloses a circuit for accelerating fingerprint unlocking, which is applied to an electronic device having an application processor, a touch chip, a fingerprint recognition chip, a display driver chip, and a flash memory chip, and includes a logic unit, A first signal selection unit and a second signal selection unit. In the case of applying the circuit for accelerating fingerprint unlocking of the present invention, the fingerprint recognition chip can simultaneously perform fingerprint image acquisition during the process of waking up the application processor, so that the application processor can directly read the fingerprint image after being awakened. Image collection data, in this way, the dormant electronic device is quickly awakened and fingerprint unlocked.
Description
本發明係關於同時具有觸控功能和指紋識別功能之電子裝置的技術領域,尤指一種加速指紋解鎖的電路以及具有該加速指紋解鎖的電路之一種資訊處理裝置。The present invention relates to the technical field of electronic devices with both touch function and fingerprint identification function, in particular to a circuit for accelerating fingerprint unlocking and an information processing device with the circuit for accelerating fingerprint unlocking.
已知,智能手機為現代人不可缺少的電子產品。除了最基本的觸控功能和顯示功能之外,一些中高階的智能手機還更進一步具有指紋辨識功能。因此,中高階的智能手機通常必須搭載應用處理器(Application processor)、顯示驅動芯片、觸控芯片、以及指紋辨識芯片,以令智能手機可以協同實現觸控功能、顯示功能和指紋辨識功能。It is known that smart phones are indispensable electronic products for modern people. In addition to the most basic touch functions and display functions, some mid-to-high-end smartphones further have fingerprint recognition functions. Therefore, mid-to-high-end smart phones usually must be equipped with an application processor, a display driver chip, a touch chip, and a fingerprint recognition chip, so that the smart phone can realize the touch function, display function and fingerprint recognition function together.
圖1為習知的一種智能手機所具有的一應用處理器、一顯示驅動芯片、一觸控芯片、及一指紋辨識芯片的電路方塊圖。如圖1所示,應用處理器1’主要是用於運行一手機操作系統並通過一IIC(Inter-integrated circuit)主控介面11’、一SPI(Serial peripheral interface)主控介面12’和一MIPI(Mobile Industry Processor Interface)主控介面13’以分別發送指令至觸控芯片2’、 指紋辨識芯片3’、和顯示驅動芯片4’。對應地,觸控芯片2’具有一IIC受控介面21’, 指紋辨識芯片3’具有一SPI受控介面31’,而顯示驅動芯片4’具有一MIPI受控介面41’。FIG. 1 is a circuit block diagram of an application processor, a display driver chip, a touch chip, and a fingerprint recognition chip included in a conventional smart phone. As shown in Figure 1, the application processor 1'is mainly used to run a mobile phone operating system and through an IIC (Inter-integrated circuit) main control interface 11', an SPI (Serial peripheral interface) main control interface 12' and a The MIPI (Mobile Industry Processor Interface) main control interface 13' sends instructions to the touch chip 2', the fingerprint recognition chip 3', and the display driver chip 4'respectively. Correspondingly, the touch chip 2'has an IIC controlled interface 21', the fingerprint identification chip 3'has an SPI controlled interface 31', and the display driver chip 4'has an MIPI controlled interface 41'.
補充說明的是,串行外設介面(SPI)是一種四線全雙工的通信總線(Bus),其具有通信速度較快的優點,因此經常用於智能手機之中,利於應用處理器1’(亦即,主控制芯片)與指紋辨識芯片3’之間的通信及數據傳輸。集成電路介面(IIC)也是一種串行通信總線(Bus),主要用於使得應用處理器1’低速連接一些受控芯片,如圖1所示的觸控芯片2’。再者,移動行業處理器介面(MIPI)則為一種應用在實現高速數據傳輸的專用接口,例如,應用在顯示驅動芯片4’和應用處理器1’之間。It is added that the Serial Peripheral Interface (SPI) is a four-wire full-duplex communication bus (Bus), which has the advantage of faster communication speed, so it is often used in smart phones to benefit the application processor. 1 '(Ie, the main control chip) and the fingerprint recognition chip 3'for communication and data transmission. The integrated circuit interface (IIC) is also a serial communication bus (Bus), which is mainly used to connect the application processor 1'to some controlled chips at low speed, such as the touch chip 2'shown in FIG. Furthermore, the Mobile Industry Processor Interface (MIPI) is a special interface used to realize high-speed data transmission, for example, between the display driver chip 4'and the application processor 1'.
於實現指紋解鎖技術的過程中,如圖1所示,應用處理器1’通過IIC協議與觸控芯片2’通信,通過SPI協議與指紋辨識芯片3’通信,通過MIPI協議與顯示驅動芯片4’通信。當觸控芯片2’檢測到手指觸摸智能手機的螢幕時,其通過IIC協議上傳手指的觸摸坐標至應用處理器1’。之後,應用處理器1’通過MIPI協議發送一指令到顯示驅動芯片4’,進而在螢幕的對應位置顯示一用於協助指紋辨識之背景圖片。繼續地,應用處理器1’通過SPI協議傳送一指紋採集座標與一指紋採集指令至指紋辨識芯片3’,且在所述指紋辨識芯片3’完成一指紋採集作業之後,讀取指紋圖像。最終,在對採集到的指紋圖像進行特徵提取(Feature extraction)與特徵匹配之後,應用處理器1’只會在指紋特徵與一預存的模板指紋特徵一致的情況下允許螢幕解鎖。In the process of implementing the fingerprint unlocking technology, as shown in Figure 1, the application processor 1'communicates with the touch chip 2'through the IIC protocol, communicates with the fingerprint recognition chip 3'through the SPI protocol, and communicates with the
更詳細地說明,如圖1所示,除了IIC受控介面21’之外,觸控芯片2’之中還包括一INT接口22’用以對該應用處理器1’執行一外部中斷喚醒。另一方面,由於觸控芯片2’主要是用於執行觸摸感測並依據感測信號判斷是否有手指觸摸以及手指觸摸位置,因此觸控芯片2’內部通常設有一顆微處理器23’以執行一觸摸檢測演算法。目前,通常是讓觸控芯片2’外接一顆快閃記憶體芯片5’;如圖1所示,觸控芯片2’也是以一SPI主控介面24’耦接該快閃記憶體芯片5’的一SPI受控介面51’。如此設置,執行所述觸摸檢測演算法時,所述微處理器23’便可自該快閃記憶體芯片5’之中載入相關可執行文件。另外,觸控芯片2’還具有幾個通用輸入輸出接口(General Purpose Input/Output, GPIO)25’。In more detail, as shown in FIG. 1, in addition to the IIC controlled interface 21', the touch chip 2'also includes an INT interface 22' for performing an external interrupt wake-up on the application processor 1'. On the other hand, since the touch chip 2'is mainly used to perform touch sensing and determine whether there is a finger touch and the position of the finger according to the sensing signal, a microprocessor 23' is usually provided inside the touch chip 2' Perform a touch detection algorithm. Currently, the touch chip 2'is usually connected to an external flash memory chip 5'; as shown in FIG. 1, the touch chip 2'is also coupled to the
然而,就具有如圖1所示之應用處理器1’、 觸控芯片2’、 指紋辨識芯片3’和顯示驅動芯片4’的智能手機而言,利用指紋辨識對其進行休眠解鎖的過程中會顯示出以下缺陷。在智能手機處於休眠狀態下,觸控芯片2’檢測到手指觸摸螢幕後,會利用其INT接口22’對應用處理器1’執行一外部中斷喚醒。值得注意的是,對於中低階的智能手機而言,其所搭載的效能相對較差的應用處理器1’的喚醒時間通常較長;因此,實務經驗顯示,由手指觸摸螢幕之後到完成螢幕解鎖需要耗時700微秒至800微秒,導致用戶體驗(User Experience, UX)不佳。However, for a smart phone with an application processor 1', a touch chip 2', a fingerprint recognition chip 3', and a display driver chip 4'as shown in FIG. 1, during the sleep unlocking process using fingerprint recognition The following defects will be displayed. When the smart phone is in the sleep state, after the touch chip 2'detects that the finger touches the screen, it will use its INT interface 22' to wake up the application processor 1'by an external interrupt. It is worth noting that for low-end smartphones, the relatively low-performance application processor 1'usually has a longer wake-up time; therefore, practical experience shows that it takes a finger to touch the screen to complete the screen unlocking It takes 700 microseconds to 800 microseconds, resulting in poor user experience (UX).
由上述說明可知,本領域亟需一種加速指紋解鎖的電路。It can be seen from the above description that a circuit for accelerating fingerprint unlocking is urgently needed in the art.
本發明之主要目的在於提供一種加速指紋解鎖的電路,用於整合在例如智能手機的一電子裝置之中,實現該電子裝置之快速喚醒並透過指紋辨識進行螢幕解鎖。在應用本發明之加速指紋解鎖的電路的情況下,指紋辨識芯片便可以在所述應用處理器被喚醒的過程中同時執行指紋圖像的採集,使得應用處理器被喚醒之後直接讀取指紋圖像的採集數據,藉此方式對休眠狀態的電子裝置進行快速喚醒及指紋解鎖。The main purpose of the present invention is to provide a circuit for accelerating fingerprint unlocking, which is integrated in an electronic device such as a smart phone to realize rapid wake-up of the electronic device and unlock the screen through fingerprint recognition. In the case of applying the circuit for accelerating fingerprint unlocking of the present invention, the fingerprint recognition chip can simultaneously perform fingerprint image acquisition during the process of waking up the application processor, so that the application processor can directly read the fingerprint image after being awakened. Image collection data, in this way, the dormant electronic device is quickly awakened and fingerprint unlocked.
為達成上述目的,本發明提出所述加速指紋解鎖的電路之一實施例,其應用於具有觸控功能和指紋辨識功能的一資訊處理裝置之中,且該資訊處理裝置具有一應用處理器、一觸控芯片、一指紋辨識芯片、一顯示驅動芯片、以及一快閃記憶體芯片;所述加速指紋解鎖的電路包括:To achieve the above objective, the present invention proposes an embodiment of the circuit for accelerating fingerprint unlocking, which is applied to an information processing device with touch function and fingerprint recognition function, and the information processing device has an application processor, A touch chip, a fingerprint recognition chip, a display driver chip, and a flash memory chip; the circuit for accelerating fingerprint unlocking includes:
一邏輯單元,用以耦接傳送自該觸控芯片的一串行控制信號以及由該觸控芯片的一第一通用輸入輸出接口所傳送的一第一串行信號,進而依據該第一串行信號輸出所述串行控制信號或者屏蔽所述串行控制信號;A logic unit for coupling a serial control signal transmitted from the touch chip and a first serial signal transmitted by a first universal input and output interface of the touch chip, and then according to the first serial Line signal outputting the serial control signal or shielding the serial control signal;
一第一信號選擇單元,用以接收由該邏輯單元所傳送的該串行控制信號,且同時耦接由該觸控芯片的一第二通用輸入輸出接口所傳送的一第二串行信號,進而依據該第二串行信號將所述串行控制信號傳送至該快閃記憶體芯片或該顯示驅動芯片;以及A first signal selection unit for receiving the serial control signal transmitted by the logic unit, and at the same time being coupled to a second serial signal transmitted by a second universal input and output interface of the touch chip, Further transmitting the serial control signal to the flash memory chip or the display driver chip according to the second serial signal; and
一第二信號選擇單元,用以耦接傳送自該觸控芯片的該串行控制信號和一第一SPI信號、由該第一通用輸入輸出接口所傳送的該第一串行信號以及傳送自該應用處理器的一第二SPI信號,進而依據該第一串行信號和該串行控制信號將所述第一SPI信號或所述第二SPI信號傳送至該指紋辨識芯片;A second signal selection unit for coupling the serial control signal and a first SPI signal transmitted from the touch chip, the first serial signal transmitted by the first universal input output interface, and A second SPI signal of the application processor, further transmitting the first SPI signal or the second SPI signal to the fingerprint recognition chip according to the first serial signal and the serial control signal;
其中,該顯示驅動芯片耦接所述第一SPI信號以及由該觸控芯片的一第三通用輸入輸出接口所傳送的一第三串行信號,且該快閃記憶體芯片耦接傳送自該觸控芯片的第三SPI信號。Wherein, the display driver chip is coupled to the first SPI signal and a third serial signal transmitted by a third universal input and output interface of the touch chip, and the flash memory chip is coupled to the third serial signal transmitted from the The third SPI signal of the touch chip.
在可能的實施例中,該邏輯單元可為一或閘(OR gate)或一及閘(AND gate)。In possible embodiments, the logic unit may be an OR gate or an AND gate.
在一實施例中,該第一信號選擇單元為一第一多工器,且該第二信號選擇單元為一第二多工器。In an embodiment, the first signal selection unit is a first multiplexer, and the second signal selection unit is a second multiplexer.
在一實施例中,於該第三串行信號上升至高準位且該第一串行信號和該第二串行信號皆下降至低準位的情況下,該第二信號選擇單元將該應用處理器的該第二SPI信號傳送至該指紋辨識芯片,且該第一信號選擇單元將該觸控芯片的該串行控制信號傳送至該顯示驅動芯片。In one embodiment, when the third serial signal rises to a high level and the first serial signal and the second serial signal both fall to a low level, the second signal selection unit applies The second SPI signal of the processor is transmitted to the fingerprint recognition chip, and the first signal selection unit transmits the serial control signal of the touch chip to the display driving chip.
在一實施例中,於該第二串行信號上升至高準位且該第一串行信號和該第三串行信號皆下降至低準位的情況下,該第二信號選擇單元將該應用處理器的該第二SPI信號傳送至該指紋辨識芯片,且該第一信號選擇單元將該觸控芯片的該串行控制信號傳送至該快閃記憶體芯片。In one embodiment, when the second serial signal rises to a high level and the first serial signal and the third serial signal both fall to a low level, the second signal selection unit applies The second SPI signal of the processor is transmitted to the fingerprint recognition chip, and the first signal selection unit transmits the serial control signal of the touch chip to the flash memory chip.
在一實施例中,於該第三串行信號下降至低準位的情況下,該顯示驅動芯片通過MIPI協議與該應用處理器進行高速數據傳輸;並且,於該第三串行信號上升至高準位的情況下,該觸控芯片控制該顯示驅動芯片於該資訊處理裝置的一螢幕上顯示一用於協助指紋辨識之背景圖片。In one embodiment, when the third serial signal drops to a low level, the display driver chip performs high-speed data transmission with the application processor through the MIPI protocol; and, when the third serial signal rises to a high level In the case of the level, the touch control chip controls the display driver chip to display a background image for assisting fingerprint recognition on a screen of the information processing device.
在一實施例中,於該第一串行信號上升至高準位且該第二串行信號和該第三串行信號皆下降至低準位的情況下,該第二信號選擇單元將該觸控芯片的該第一SPI信號傳送至該指紋辨識芯片,該邏輯單元屏蔽所述串行控制信號,且該顯示驅動芯片通過MIPI協議與該應用處理器進行高速數據傳輸。In one embodiment, when the first serial signal rises to a high level and the second serial signal and the third serial signal both fall to a low level, the second signal selection unit touches The first SPI signal of the control chip is transmitted to the fingerprint recognition chip, the logic unit shields the serial control signal, and the display driver chip performs high-speed data transmission with the application processor through the MIPI protocol.
在一實施例中,該第三串行信號、該第一串行信號和該第二串行信號係由該觸控芯片的一微處理器配置其上升至高準位或下降至低準位。In one embodiment, the third serial signal, the first serial signal, and the second serial signal are configured by a microprocessor of the touch chip to rise to a high level or fall to a low level.
本發明同時提供一種資訊處理裝置,其包含一應用處理器、一觸控芯片、一指紋辨識芯片、一顯示驅動芯片、以及一快閃記憶體芯片,且進一步包含如前所述之加速指紋解鎖的電路。The present invention also provides an information processing device, which includes an application processor, a touch chip, a fingerprint recognition chip, a display driver chip, and a flash memory chip, and further includes the accelerated fingerprint unlocking as described above Circuit.
在可能的實施例中,所述資訊處理裝置可為智慧型手機、平板電腦、具觸控螢幕的筆記型電腦、一體式電腦、智慧型手錶或具觸控螢幕的門禁裝置。In possible embodiments, the information processing device may be a smart phone, a tablet computer, a notebook computer with a touch screen, an all-in-one computer, a smart watch, or an access control device with a touch screen.
為使 貴審查委員能進一步瞭解本發明之結構、特徵、目的、與其優點,茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable your reviewer to further understand the structure, features, purpose, and advantages of the present invention, the drawings and detailed descriptions of preferred specific embodiments are attached as follows.
圖2顯示包含本發明之一種加速指紋解鎖的電路的一智能手機之電路功能方塊圖。如圖2示,智能手機包含多個重要芯片,包括:應用處理器1、觸控芯片2、指紋辨識芯片3、顯示驅動芯片4、以及快閃記憶體芯片5。其中,該應用處理器1以其一IIC主控介面11與該觸控芯片2的一IIC受控介面20通信,且其一MIPI主控介面12與該顯示驅動芯片4的一MIPI受控介面41進行高速數據傳輸。另一方面,該快閃記憶體芯片5具有一SPI受控介面51,且該指紋辨識芯片3亦具有一SPI受控介面31。再者,該顯示驅動芯片4還具有用於執行串行通信的電連接介面42。Fig. 2 shows a functional block diagram of a smart phone including a circuit for accelerating fingerprint unlocking of the present invention. As shown in FIG. 2, the smart phone includes a number of important chips, including: an
值得注意的是,除了IIC受控介面20之外,觸控芯片2還包含一微處理器21、一SPI主控介面22、一第一通用輸入輸出接口23、一第二通用輸入輸出接口24、一第三通用輸入輸出接口25、以及一INT接口26。本發明之加速指紋解鎖的電路即規劃設置在該觸控芯片2、該指紋辨識芯片3、該顯示驅動芯片4、該快閃記憶體芯片5、和該應用處理器1之間,用以透過對該觸控芯片2的該第一通用輸入輸出接口23、該第二通用輸入輸出接口24以及該第三通用輸入輸出接口25進行高準位或低準位的配置或變更,使得觸控芯片2在以其INT接口26對該應用處理器1執行一外部中斷喚醒之時,能夠同時控制該指紋辨識芯片3進行指紋採集作業,使得應用處理器1被喚醒之後可以直接讀取指紋圖像的採集數據,藉此方式利用指紋辨識技術對進入休眠狀態的電子裝置進行喚醒及螢幕解鎖。It is worth noting that, in addition to the IIC controlled
如圖2所示,本發明之加速指紋解鎖的電路包括:一邏輯單元61、一第一信號選擇單元62、以及一第二信號選擇單元63,其中該邏輯單元61用以耦接由該觸控芯片2的SPI主控介面22所傳送的一串行控制信號SPI_CS以及由該第一通用輸入輸出接口23所傳送的一第一串行信號GPIO1,進而依據該第一串行信號GPIO1而將所述串行控制信號SPI_CS予以輸出或屏蔽所述串行控制信號SPI_CS。舉例而言,該邏輯單元61可為一或閘(OR gate)或一及閘(AND gate)。As shown in FIG. 2, the circuit for accelerating fingerprint unlocking of the present invention includes: a
該第一信號選擇單元62用以接收由該邏輯單元61所傳送的該串行控制信號SPI_CS,且同時耦接由該第二通用輸入輸出接口24所傳送的一第二串行信號GPIO2,進而依據該第二串行信號GPIO2而將所述串行控制信號SPI_CS傳送至該快閃記憶體芯片5的SPI受控介面51或該顯示驅動芯片4的電連接介面42。另一方面,該第二信號選擇單元63用以耦接由該觸控芯片2的該SPI主控介面22所傳送的串行控制信號SPI_CS和一第一SPI信號、由該第一通用輸入輸出接口23所傳送的該第一串行信號GPIO1、以及由該應用處理器1的SPI主控介面13所傳送的一第二SPI信號。之後,第二信號選擇單元63依據該第一串行信號GPIO1和該串行控制信號SPI_CS而將所述第一SPI信號或所述第二SPI信號傳送至指紋辨識芯片3的SPI受控介面31。The first
補充說明的是,該第一信號選擇單元62為一第一多工器,且該第二信號選擇單元63為一第二多工器。此外,如圖2所示,該顯示驅動芯片4耦接由該觸控芯片2之SPI主控介面22所傳送的第一SPI信號以及由該第三通用輸入輸出接口25所傳送的一第三串行信號GPIO0,且該觸控芯片2之SPI主控介面22同時傳送一第三SPI信號至快閃記憶體芯片5的SPI受控介面51。It is supplemented that the first
圖3A顯示本發明之加速指紋解鎖的電路之第一電路操作圖。在智能手機操作在一正常工作模式(或稱亮屏模式)下,如圖3A所示,觸控芯片2的微處理器21令該第二串行信號GPIO2上升至高準位且令該第一串行信號GPIO1和該第三串行信號GPIO0皆下降至低準位。亦即,GPIO0=0,GPIO1=0,且GPIO2=1。在此情況下,該第二信號選擇單元63(亦即,第二多工器)將該應用處理器1的該第二SPI信號傳送至該指紋辨識芯片3,且該第一信號選擇單元62(亦即,第一多工器)將該觸控芯片2的該串行控制信號SPI_CS傳送至該快閃記憶體芯片5。同時,由於該第三串行信號GPIO0為低準位(亦即,GPIO0=0),該顯示驅動芯片4係通過MIPI協議與該應用處理器1進行高速數據傳輸。簡單地說,在觸控芯片2的微處理器21配置(GPIO0, GPIO1, GPIO2)=(0, 0, 1)之後,觸控芯片2通過該SPI主控介面22和該SPI受控介面51對快閃記憶體芯片5進行存取。同時,應用處理器1通過SPI主控介面13和SPI受控介面31控制所述指紋辨識芯片3執行指紋採集作業,且應用處理器1還通過MIPI主控介面12和MIPI受控介面41與該顯示驅動芯片4進行高速數據傳輸。3A shows the first circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention. When the smartphone operates in a normal working mode (or called bright screen mode), as shown in FIG. 3A, the
圖3B顯示本發明之加速指紋解鎖的電路之第二電路操作圖。在智能手機操作在一休眠喚醒模式下,如圖3B所示,觸控芯片2的微處理器21令該第三串行信號GPIO0上升至高準位,且令該第一串行信號GPIO1和該第二串行信號GPIO2皆下降至低準位。亦即,GPIO0=1,GPIO1=0,且GPIO2=0。在此情況下,該第二信號選擇單元63(亦即,第二多工器)將該應用處理器1的該第二SPI信號傳送至該指紋辨識芯片3,且該第一信號選擇單元62(亦即,第一多工器)將該觸控芯片2的該串行控制信號SPI_CS傳送至該顯示驅動芯片4。同時,由於該第三串行信號GPIO0為高準位(亦即,GPIO0=1),該觸控芯片2透過SPI主控介面22和電連接介面42控制顯示驅動芯片4,令該顯示驅動芯片4於電子裝置的螢幕的對應位置(即,觸摸位置)上顯示一用於協助指紋辨識之背景圖片。簡單地說,在智能手機休眠時,觸控芯片2的微處理器21配置(GPIO0, GPIO1, GPIO2)=(1, 0, 0)之後。如此設置,當電子裝置的螢幕有手指觸摸時,觸控芯片2在以其INT接口26對該應用處理器1執行一外部中斷喚醒之時,還能夠同時控制該顯示驅動芯片4顯示用於協助指紋辨識之背景圖片,利於該指紋辨識芯片3進行指紋採集作業。3B shows the second circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention. When the smart phone operates in a sleep wake-up mode, as shown in FIG. 3B, the
圖3C顯示本發明之加速指紋解鎖的電路之第三電路操作圖。在該顯示驅動芯片4驅動電子裝置的螢幕顯示一幀影像(亦即,用於協助指紋辨識之背景圖片)之後,如圖3C所示,觸控芯片2的微處理器21令該第一串行信號GPIO1上升至高準位,且令該第二串行信號GPIO2和該第三串行信號GPIO0皆下降至低準位。亦即,GPIO0=0,GPIO1=1,且GPIO2=0。在此情況下,觸控芯片2通過SPI主控介面22和SPI受控介面31控制所述指紋辨識芯片4執行一指紋採集作業。3C shows the third circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention. After the
圖3D顯示本發明之加速指紋解鎖的電路之第四電路操作圖。在該指紋辨識芯片4完成所述指紋採集作業之後,如圖3D所示,觸控芯片2的微處理器21令該第三串行信號GPIO0下降至低準位,且令該第一串行信號GPIO1和該第二串行信號GPIO2皆上升至高準位。亦即,GPIO0=0,GPIO1=1,且GPIO2=1。在此情況下,應用處理器1通過SPI主控介面13和SPI受控介面31控制所述指紋辨識芯片3。簡單地說,在該應用處理器1被成功喚醒之後,應用處理器1便可以直接讀取指紋圖像的採集數據。最終,在對採集到的指紋圖像進行特徵提取(Feature extraction)與特徵匹配之後,應用處理器1只會在指紋特徵與一預存的模板指紋特徵一致的情況下允許螢幕解鎖,藉此方式利用指紋辨識技術對進入休眠狀態的電子裝置進行喚醒及螢幕解鎖。3D shows the fourth circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention. After the
如此,上述已完整且清楚地說明本發明之一種加速指紋解鎖的電路;並且,經由上述可得知本發明具有下列之優點:In this way, the above has completely and clearly explained a circuit for accelerating fingerprint unlocking of the present invention; and from the above, it can be seen that the present invention has the following advantages:
本發明揭示一種加速指紋解鎖的電路,其應用於具有應用處理器、觸控芯片、指紋辨識芯片、顯示驅動芯片、以及快閃記憶體芯片的一電子裝置之中。在應用本發明之加速指紋解鎖的電路的情況下,指紋辨識芯片便可以在所述應用處理器被喚醒的過程中同時執行指紋圖像的採集,使得應用處理器被喚醒之後直接讀取指紋圖像的採集數據,藉此方式對休眠狀態的電子裝置進行快速喚醒及指紋解鎖。The present invention discloses a circuit for accelerating fingerprint unlocking, which is applied to an electronic device having an application processor, a touch chip, a fingerprint recognition chip, a display driver chip, and a flash memory chip. In the case of applying the circuit for accelerating fingerprint unlocking of the present invention, the fingerprint recognition chip can simultaneously perform fingerprint image acquisition during the process of waking up the application processor, so that the application processor can directly read the fingerprint image after being awakened. Image collection data, in this way, the dormant electronic device is quickly awakened and fingerprint unlocked.
必須加以強調的是,前述本案所揭示者乃為較佳實施例,舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者,俱不脫本案之專利權範疇。It must be emphasized that the foregoing disclosures in this case are preferred embodiments, and any partial changes or modifications that are derived from the technical ideas of this case and are easily inferred by those who are familiar with the art will not deviate from the patent of this case. Right category.
綜上所陳,本案無論目的、手段與功效,皆顯示其迥異於習知技術,且其首先發明合於實用,確實符合發明之專利要件,懇請 貴審查委員明察,並早日賜予專利俾嘉惠社會,是為至禱。In summary, regardless of the purpose, means and effects of this case, it is shown that it is very different from the conventional technology, and its first invention is suitable for practicality, and it does meet the patent requirements of the invention. Please check it out and grant the patent as soon as possible. Society is for the best prayer.
<本發明><The present invention>
1:應用處理器1: Application processor
11:IIC主控介面11: IIC main control interface
12:MIPI主控介面12: MIPI main control interface
2:觸控芯片2: Touch chip
20:IIC受控介面20: IIC controlled interface
21:微處理器21: Microprocessor
13、22:SPI主控介面13, 22: SPI master interface
23:第一通用輸入輸出接口23: The first universal input and output interface
24:第二通用輸入輸出接口24: The second universal input and output interface
25:第三通用輸入輸出接口25: The third universal input and output interface
26:INT接口26: INT interface
3:指紋辨識芯片3: Fingerprint recognition chip
4:顯示驅動芯片4: Display driver chip
41:MIPI受控介面41: MIPI controlled interface
42:電連接介面42: Electrical connection interface
5:快閃記憶體芯片5: Flash memory chip
31、51:SPI受控介面31, 51: SPI controlled interface
61:邏輯單元61: Logic Unit
62:第一信號選擇單元62: The first signal selection unit
63:第二信號選擇單元63: The second signal selection unit
<習知><Actually knowledge>
1’:應用處理器1’: Application processor
11’:IIC主控介面11’: IIC main control interface
12’、24’:SPI主控介面12’, 24’: SPI master interface
13’:MIPI主控介面13’: MIPI main control interface
2’:觸控芯片2’: Touch chip
21’:IIC受控介面21’: IIC controlled interface
22’:INT接口22’: INT interface
23’:微處理器23’: Microprocessor
25’:通用輸入輸出接口25’: Universal input and output interface
3’:指紋辨識芯片3’: Fingerprint recognition chip
31’、51’:SPI受控介面31’, 51’: SPI controlled interface
4’:顯示驅動芯片4’: Display driver chip
41’:MIPI受控介面41’: MIPI controlled interface
5’:快閃記憶體芯片5’: Flash memory chip
圖1為習知的一種智能手機所具有的一應用處理器、一顯示驅動芯片、一觸控芯片、及一指紋辨識芯片的電路方塊圖; 圖2為包含本發明之一種加速指紋解鎖的電路的一智能手機之電路功能方塊圖; 圖3A為本發明之加速指紋解鎖的電路之第一電路操作圖; 圖3B為本發明之加速指紋解鎖的電路之第二電路操作圖; 圖3C為本發明之加速指紋解鎖的電路之第三電路操作圖;以及 圖3D為本發明之加速指紋解鎖的電路之第四電路操作圖。 Fig. 1 is a circuit block diagram of an application processor, a display driver chip, a touch chip, and a fingerprint recognition chip included in a conventional smart phone; 2 is a functional block diagram of a smart phone circuit including a circuit for accelerating fingerprint unlocking of the present invention; 3A is a first circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention; 3B is a second circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention; 3C is a third circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention; and 3D is a fourth circuit operation diagram of the circuit for accelerating fingerprint unlocking of the present invention.
1:應用處理器 1: Application processor
11:IIC主控介面 11: IIC main control interface
12:MIPI主控介面 12: MIPI main control interface
13、22:SPI主控介面 13, 22: SPI master interface
2:觸控芯片 2: Touch chip
20:IIC受控介面 20: IIC controlled interface
21:微處理器 21: Microprocessor
23:第一通用輸入輸出接口 23: The first universal input and output interface
24:第二通用輸入輸出接口 24: The second universal input and output interface
25:第三通用輸入輸出接口 25: The third universal input and output interface
26:INT接口 26: INT interface
3:指紋辨識芯片 3: Fingerprint recognition chip
31、51:SPI受控介面 31, 51: SPI controlled interface
4:顯示驅動芯片 4: Display driver chip
41:MIPI受控介面 41: MIPI controlled interface
42:電連接介面 42: Electrical connection interface
5:快閃記憶體芯片 5: Flash memory chip
61:邏輯單元 61: Logic Unit
62:第一信號選擇單元 62: The first signal selection unit
63:第二信號選擇單元 63: The second signal selection unit
Claims (10)
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Citations (4)
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CN104008319A (en) * | 2014-05-14 | 2014-08-27 | 深圳市汇顶科技股份有限公司 | Terminal based on fingerprint recognition and method and system for logging into same in stand-by state |
CN105740690A (en) * | 2016-03-14 | 2016-07-06 | 广东欧珀移动通信有限公司 | Unlocking method and mobile terminal |
TW201715436A (en) * | 2015-10-23 | 2017-05-01 | 曦威科技股份有限公司 | Fingerprint detector with touch control, fingerprint detector with integrated indication light and mobile device using the same |
US20190228207A1 (en) * | 2016-04-27 | 2019-07-25 | Samsung Electronics Co., Ltd. | Fingerprint verification method and electronic device for performing the same |
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CN104008319A (en) * | 2014-05-14 | 2014-08-27 | 深圳市汇顶科技股份有限公司 | Terminal based on fingerprint recognition and method and system for logging into same in stand-by state |
TW201715436A (en) * | 2015-10-23 | 2017-05-01 | 曦威科技股份有限公司 | Fingerprint detector with touch control, fingerprint detector with integrated indication light and mobile device using the same |
CN105740690A (en) * | 2016-03-14 | 2016-07-06 | 广东欧珀移动通信有限公司 | Unlocking method and mobile terminal |
US20190228207A1 (en) * | 2016-04-27 | 2019-07-25 | Samsung Electronics Co., Ltd. | Fingerprint verification method and electronic device for performing the same |
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