WO2020061759A1 - 基于多传感器的屏下指纹采集方法、系统和电子设备 - Google Patents

基于多传感器的屏下指纹采集方法、系统和电子设备 Download PDF

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Publication number
WO2020061759A1
WO2020061759A1 PCT/CN2018/107382 CN2018107382W WO2020061759A1 WO 2020061759 A1 WO2020061759 A1 WO 2020061759A1 CN 2018107382 W CN2018107382 W CN 2018107382W WO 2020061759 A1 WO2020061759 A1 WO 2020061759A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
area
sensors
effectively pressed
sensor
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Application number
PCT/CN2018/107382
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English (en)
French (fr)
Inventor
武丹
胡荣英
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to CN201880001636.4A priority Critical patent/CN109313522B/zh
Priority to PCT/CN2018/107382 priority patent/WO2020061759A1/zh
Priority to EP18933733.0A priority patent/EP3674856B1/en
Priority to US16/833,494 priority patent/US11275960B2/en
Publication of WO2020061759A1 publication Critical patent/WO2020061759A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/17—Image acquisition using hand-held instruments

Definitions

  • the present application relates to the field of fingerprint technology, and more particularly, to a multi-sensor-based fingerprint acquisition method, system, and electronic device.
  • the under-screen fingerprint recognition device can be built into the display screen of the mobile phone, without having to stick to a specific size, and can realize large-area fingerprint recognition, which is equivalent to increasing the length of the password and improving the security of fingerprint recognition.
  • large-area fingerprint recognition requires longer fingerprint matching time, resulting in larger power consumption of the terminal and affecting user experience.
  • Embodiments of the present application provide a multi-sensor-based fingerprint collection method, system, and electronic device, which can reduce power consumption of a terminal.
  • a multi-sensor-based under-screen fingerprint collection method which is applied to an under-screen fingerprint collection system including multiple fingerprint sensors, and the method includes:
  • a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors is determined according to a user's pressing area on the display screen, wherein each fingerprint sensor corresponds to a sensing area, and the sensing areas corresponding to the multiple fingerprint sensors form the screen Fingerprint acquisition area of the fingerprint acquisition system;
  • the fingerprint information of the user is collected through the fingerprint sensor that is effectively pressed.
  • the determining a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of a user on a display screen includes:
  • the determining the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to an area of an overlapping area of the pressing area and a sensing area of each fingerprint sensor includes: :
  • a fingerprint sensor corresponding to an overlapping area having an area larger than the first threshold is determined as the fingerprint sensor that is effectively pressed.
  • the method further includes:
  • the threshold of the number of fingerprint sensors that are effectively pressed is determined according to the security level of the first operation that triggers fingerprint collection and the first correspondence relationship, wherein the first correspondence relationship is the security level and the number of fingerprint sensors that are effectively pressed. Correspondence between quantity thresholds.
  • the determining the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to an area of an overlapping area of the pressing area and a sensing area of each fingerprint sensor includes: :
  • the determining, according to an area of an overlapping area of the pressing area and a sensing area of each fingerprint sensor, in combination with a threshold number of fingerprint sensors that are effectively pressed includes:
  • a fingerprint sensor corresponding to the target overlapping area is determined as the fingerprint sensor that is effectively pressed.
  • a first security level corresponds to N fingerprint sensors
  • a second security level corresponds to M fingerprint sensors
  • the first security level is higher than the second security level.
  • the security level wherein the N and M are positive integers, and the N is greater than M.
  • M is the number of fingerprint sensors that can be pressed by a single finger
  • N is the number of fingerprint sensors that can be pressed by at least two fingers.
  • the method further includes:
  • the method further includes:
  • Fingerprint recognition is performed according to the fingerprint information of the user collected by the effectively pressed fingerprint sensor.
  • the other fingerprint sensor is in an inoperative state, and the other fingerprint sensor is in a sleep state or a shutdown state.
  • a multi-sensor-based under-screen fingerprint collection system including:
  • each fingerprint sensor corresponds to a sensing area, and the sensing areas corresponding to the multiple fingerprint sensors form a fingerprint collection area of the under-screen fingerprint collection system;
  • a processing unit configured to determine a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of the user on the display screen, and control the fingerprint sensor that is effectively pressed to be in a working state, except for the effectively pressed Fingerprint sensors other than the fingerprint sensor are in a non-working state, and fingerprint information of the user is collected through the fingerprint sensor that is effectively pressed.
  • the processing unit is further configured to determine an overlapping area of the pressing area and a sensing area of each of the plurality of fingerprint sensors;
  • the processing unit is specifically configured to determine a fingerprint sensor corresponding to an overlapped area having an area larger than the first threshold as a fingerprint sensor that is effectively pressed.
  • the processing unit is further configured to determine a threshold value of the number of fingerprint sensors that are effectively pressed according to a security level of a first operation that triggers fingerprint collection and a first correspondence relationship, where the first correspondence relationship is Correspondence between the security level and the threshold of the number of fingerprint sensors that are effectively pressed.
  • the processing unit is further configured to determine the plurality of fingerprints according to an area of an overlapping area of the pressing area and a sensing area of each fingerprint sensor in combination with a threshold number of fingerprint sensors that are effectively pressed.
  • the fingerprint sensor is effectively pressed in the sensor.
  • the processing unit is specifically configured to determine K overlapping areas having the largest area among overlapping areas of the pressing area and the sensing area of each fingerprint sensor, where K is the first operation
  • K is the first operation
  • a fingerprint sensor corresponding to the target overlapping area is determined as the fingerprint sensor that is effectively pressed.
  • the first security level corresponds to N fingerprint sensors
  • the second security level corresponds to M fingerprint sensors
  • the first security level is higher than the second security level
  • the N and M are positive integers, and the N is greater than M.
  • M is the number of fingerprint sensors that can be pressed by a single finger
  • N is the number of fingerprint sensors that can be pressed by at least two fingers.
  • the processing unit is further configured to control lighting of a sensing area of the effectively pressed fingerprint sensor on the display screen.
  • the processing unit is further configured to perform fingerprint recognition according to fingerprint information of the user collected by the fingerprint sensor that was effectively pressed.
  • the processing unit is provided in a fingerprint module or an electronic device, wherein the fingerprint module includes the plurality of fingerprint sensors.
  • the processing unit is a microcontroller MCU in a fingerprint module or a processor in an electronic device.
  • the processing unit includes:
  • a touch control module configured to determine the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of the user on the display screen;
  • a fingerprint control module is used to control the opening and closing of the plurality of fingerprint sensors.
  • processing unit further includes:
  • a fingerprint recognition module is configured to perform fingerprint recognition according to the fingerprint information of the user collected by the fingerprint sensor that was effectively pressed.
  • the touch control module is provided in an electronic device
  • the fingerprint control module is provided in an electronic device or a fingerprint module
  • the fingerprint identification module is provided in an electronic device or a fingerprint module.
  • a chip includes an input-output interface, at least one processor, at least one memory, and a bus.
  • the at least one memory is used to store instructions, and the at least one processor is used to call the Instructions to perform the method in the first aspect or any possible implementation of the first aspect.
  • an electronic device including the under-screen fingerprint collection system as in the second aspect or any possible implementation manner of the second aspect.
  • an electronic device including a chip as in the third aspect.
  • a computer-readable medium for storing a computer program, where the computer program includes instructions for executing the foregoing first aspect or any possible implementation manner of the first aspect.
  • a computer program product including instructions is provided.
  • the computer runs the fingers of the computer program product, the computer executes the first aspect or any possible implementation manner of the first aspect.
  • the fingerprint collection method under the screen is provided.
  • the computer program product can be run on the electronic device in the fourth aspect.
  • a fingerprint sensor that is effectively pressed among a plurality of fingerprint sensors may be determined according to a pressing area of the user on the display screen, and then only the fingerprint sensor that is effectively pressed is turned on, so that only the Effectively pressing the fingerprint sensor for fingerprint collection is beneficial to reducing the power consumption of the terminal. Further, when performing fingerprint recognition, only fingerprint matching needs to be performed on the fingerprint information collected by the effectively pressed fingerprint sensor, instead of all fingerprints. The fingerprint information collected by the sensor for fingerprint matching is beneficial to reduce the matching time and improve the user experience.
  • FIG. 1A is a directional view of an electronic device according to an embodiment of the present application.
  • Fig. 1B is a schematic cross-sectional structure view of the electronic device shown in Fig. 1A along A-A '.
  • FIG. 2 is a schematic flowchart of a multi-sensor-based on-screen fingerprint collection method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an example of determining a pressing area.
  • FIG. 4 is a schematic diagram of an example of a fingerprint sensor that is determined to be effectively pressed.
  • FIG. 5 is a diagram showing an example of determining a threshold value of the number of fingerprint sensors that are effectively pressed.
  • FIG. 6 is a flowchart of a method for collecting fingerprints under the screen according to another embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a multi-sensor-based under-screen fingerprint collection system according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of an electronic device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to fingerprint systems, including but not limited to optical, ultrasonic, or other fingerprint recognition systems and medical diagnostic products based on optical, ultrasonic, or other fingerprint imaging.
  • the embodiments of this application only take optical fingerprint systems as examples. The description is provided, but the embodiments of the present application should not be construed in any way.
  • the embodiments of the present application are also applicable to other systems using optical, ultrasonic, or other imaging technologies.
  • biometric recognition in addition to fingerprint recognition, the technical solutions of the embodiments of the present application can also perform other biometric recognition, such as palm print recognition, iris recognition, face recognition, etc., which are not limited in the embodiments of the present application.
  • the under-screen fingerprint recognition technology refers to installing a fingerprint recognition module (such as a fingerprint recognition module) under the display screen, thereby implementing fingerprint recognition operations in the display area of the display screen.
  • Area Set the fingerprint collection area As electronic devices enter the era of full-screens, the fingerprint collection area on the front of electronic devices is squeezed by full-screens. Therefore, under-display or under-screen fingerprint recognition technology is receiving more and more attention.
  • the under-screen fingerprint recognition technology refers to installing a fingerprint recognition module (such as a fingerprint recognition module) under the display screen, thereby implementing fingerprint recognition operations in the display area of the display screen. Area Set the fingerprint collection area.
  • Under-screen fingerprint recognition technology uses light returned from the top surface of the device's display assembly for fingerprint sensing and other sensing operations.
  • the returned light carries information of an object (such as a finger) that is in contact with the top surface, and a specific optical sensor module located below the display screen is realized by collecting and detecting the returned light.
  • the optical sensor module can be designed to achieve the desired optical imaging by properly configuring the optical elements for collecting and detecting the returned light.
  • FIG. 1 shows a schematic diagram of an electronic device 100 to which a fingerprint identification device can be applied, wherein FIG. 1A is a schematic front view of the electronic device 100, and FIG. 1B is a schematic cross-sectional structure view of the electronic device 100 along A-A 'shown in FIG. 1A.
  • the electronic device 100 may include a display screen 120 and a fingerprint recognition module 140, wherein the display screen 120 has a display area 102, and the fingerprint recognition module 140 is disposed below the display screen 120.
  • the display screen 120 may be a self-luminous display screen, which uses a display unit with self-luminescence as a display pixel.
  • the display 120 may be an organic light-emitting diode (OLED) display or a micro-LED display.
  • the display screen 120 may also be a liquid crystal display (Liquid Crystal Display, LCD) or other passive light-emitting display, which is not limited in this embodiment of the present application.
  • the display screen 120 may be, for example, a touch display screen, which can not only perform screen display, but also detect a user's touch or press operation, thereby providing the user with a human-machine interaction interface.
  • the electronic device 100 may include a touch sensor, and the touch sensor may specifically be a touch panel (TP), which may be disposed on the surface of the display screen 120 or partially Integrated or integrated into the display screen 120 to form the touch display screen.
  • TP touch panel
  • the fingerprint identification module 140 may be specifically an optical fingerprint identification module, which is mainly used to collect fingerprint information (such as fingerprint image information) of a user.
  • the fingerprint recognition module 140 may be disposed at least in a partial area below the display screen 120, so that the fingerprint collection area (or sensing area) 130 of the fingerprint recognition module 140 is located at least partially.
  • the area of the fingerprint collection area 130 may be different from the area of the fingerprint recognition module 140, for example, by designing a light path for lens imaging, a reflective folding light path design, or other light convergence or reflection, etc.
  • the light path design can make the area of the fingerprint collection area 130 of the fingerprint identification module 140 larger than the area of the fingerprint identification module 140.
  • the fingerprint collection area 130 of the fingerprint recognition module 140 may also be designed to be consistent with the area of the fingerprint recognition module 140.
  • the fingerprint recognition module 140 may specifically include a plurality of optical fingerprint sensors 142 (hereinafter also referred to as sensor chips) having an optical sensing array; the plurality of optical fingerprint sensors 142 may be disposed side by side on the Below the display 120.
  • Each optical sensing array 142 includes a plurality of optical sensing units, and the area where the optical sensing array is located corresponds to the sensing area 103 of the optical fingerprint sensor.
  • the sensing areas of the plurality of optical fingerprint sensors are collectively formed.
  • the fingerprint collection area 130 of the fingerprint identification module 140 That is, the fingerprint collection area 130 of the fingerprint recognition module 140 may include multiple sub-areas, each of which corresponds to a sensing area of one of the optical fingerprint sensor or the optical sensing array. As shown in FIG.
  • the fingerprint collection area 130 is located in the display area 102 of the display screen 120. Since multiple optical fingerprint sensors are arranged side by side, the fingerprint collection area 130 of the fingerprint recognition module 140 can be Extending to the main area of the lower half of the display area 102, that is, extending to the area where the finger is usually pressed, thereby implementing a blind-type fingerprint input operation. In other alternative embodiments, when the number of the optical fingerprint sensors is sufficient, the fingerprint collection area 130 may also be extended to a half display area or even the entire display area, thereby realizing half-screen or full-screen fingerprint detection.
  • the electronic device 100 when the user needs to unlock the electronic device 100 or perform other fingerprint verification, the user only needs to press his / her finger on the fingerprint collection area 130 located on the display screen 120 to implement a fingerprint input operation. Since fingerprint collection and detection can be implemented inside the display area 102 of the display screen 120, the electronic device 100 adopting the above structure does not need a special reserved space on the front side to set fingerprint keys (such as the Home key), so a full-screen solution can be adopted. Therefore, the display area 102 of the display screen 120 can extend substantially to the entire front of the electronic device 100.
  • the plurality of optical fingerprint sensors 142 of the fingerprint recognition module 140 may be individually packaged sensor chips, or may be fabricated into multiple chips (Die) and packaged in the same chip package. It can also be fabricated in different regions of the same chip (Die) through semiconductor processes.
  • the optical fingerprint sensor 142 may include a reading circuit and / or other auxiliary circuits that are electrically connected to the sensing array in addition to the optical sensing array described above.
  • an optical path modulator 144 may be further disposed above the optical fingerprint sensor 142.
  • the optical path modulator 144 can be attached as an independent optical component above the sensing array of the optical fingerprint sensor 142, or it can be integrated inside the chip of the optical fingerprint sensor 142 through a semiconductor process to achieve Ultra-thin fingerprint recognition module 140.
  • the optical path modulator 144 may be a light collimator using a through-hole array with a high aspect ratio, and is mainly used for collimating, modulating, and imaging the fingerprint detection light traveling downward to realize the slave finger The reflected light reflected from the surface is guided to the sensing array for optical detection to obtain fingerprint image information.
  • each optical path modulator 144 corresponds to an optical fingerprint sensor and is attached respectively. It is disposed above the corresponding optical fingerprint sensor 142.
  • the multiple optical fingerprint sensors 142 may also share a whole optical path modulator 144, that is, the optical path modulator 144 has a sufficiently large area to cover the sensing array of the multiple optical fingerprint sensors 142.
  • other optical elements such as a filter or a filter, may also be provided.
  • Other optical films are mainly used to isolate the influence of external interference light on optical fingerprint detection.
  • the filter can be used to filter out ambient light that penetrates a finger and enters the image recognition sensor 130 through the display screen 120. Similar to the optical path modulator 144, the filter can be used at Each optical fingerprint sensor 142 is separately set to filter out interference light, or a large area filter may be used to cover the multiple optical fingerprint sensors 142 at the same time.
  • the optical path modulator 144 may also be replaced by an optical lens (Lens).
  • a small hole may be formed by a light-shielding material above the optical lens to cooperate with the optical lens to converge fingerprint detection light to the optical fingerprint sensor 142 below.
  • each optical fingerprint sensor 142 may be configured with an optical lens for fingerprint imaging, or the multiple optical fingerprint sensors 142 may also use the same optical lens to implement light convergence and fingerprint imaging.
  • each optical fingerprint sensor 142 may even have two inductive arrays (Dual array) or multiple inductive arrays (Multi-Array), and two or more optical lenses may be configured to cooperate with the two One or more sensing arrays perform optical imaging, thereby reducing the imaging distance and enhancing the imaging effect.
  • the light-emitting layer of the display 120 has an array of OLED display units arranged in an array.
  • the fingerprint recognition module 140 can use the OLED display.
  • the OLED display unit (ie, the OLED light source) of the screen 120 located in the fingerprint collection area 130 is used as an excitation light source for fingerprint detection and identification.
  • the fingerprint identification module 140 may also use a built-in light source or an external light source to provide a light signal for fingerprint detection and identification.
  • the under-screen fingerprint recognition device can be applied not only to self-luminous displays such as OLED displays, but also to non-self-luminous displays, such as liquid crystal displays or other passive light-emitting displays.
  • the pair may further include an excitation light source for optical fingerprint detection.
  • the excitation light source may be an infrared light source. Or a light source with a specific wavelength of invisible light.
  • an infrared light source it can be disposed below the backlight module of the liquid crystal display or an edge area below the protective cover of the electronic device 100, and the fingerprint recognition module 140 is disposed on the backlight.
  • the backlight module through openings or other optical design of film layers such as diffusion sheet, brightness enhancement sheet, reflection sheet to allow fingerprint detection light to pass through the liquid crystal panel and the backlight module and reach the fingerprint identification module Group 140 of optical fingerprint sensors.
  • the optical sensing array of the fingerprint identification module 140 is specifically a photodetector array (also called a photodetector array), which includes a plurality of photodetectors distributed in an array.
  • the device can be used as an optical sensing unit as described above, and a micro lens can be formed above the light detector to improve the imaging effect of the fingerprint image.
  • the display unit of the fingerprint collection area 130 or an additional configured fingerprint detection excitation light source emits light.
  • the finger reflects and forms reflected light, where the reflected light can carry fingerprint information of the user's finger. For example, after the light is reflected by the fingerprint on the surface of the finger of the user, the reflected light of the ridges and valleys of the fingerprint of the finger is different, so the reflected light may carry the user's fingerprint information.
  • the reflected light is returned to the display screen 120 and received by the photodetector array of the fingerprint recognition module 140 below it and converted into a corresponding electrical signal, that is, a fingerprint detection signal.
  • the electronic device 100 can obtain the user's fingerprint information based on the fingerprint detection signal, and can further perform fingerprint matching verification to complete the identity verification of the current user in order to confirm whether he has the authority to perform corresponding operations on the electronic device 100. operating.
  • the electronic device 100 further includes a protective cover 110, which may be specifically a transparent cover, such as a glass cover or a sapphire cover, which is located on the display screen 120 Above and covers the front surface of the electronic device 100, and a surface of the protective cover 110 may further be provided with a protective layer. Therefore, in the embodiment of the present application, the so-called finger pressing on the display screen 120 may actually mean that the finger presses the cover 110 above the display screen 120 or the surface of the protective layer covering the cover 110.
  • a protective cover 110 which may be specifically a transparent cover, such as a glass cover or a sapphire cover, which is located on the display screen 120 Above and covers the front surface of the electronic device 100, and a surface of the protective cover 110 may further be provided with a protective layer. Therefore, in the embodiment of the present application, the so-called finger pressing on the display screen 120 may actually mean that the finger presses the cover 110 above the display screen 120 or the surface of the protective layer covering the cover 110.
  • a circuit board 150 such as a flexible printed circuit (FPC) may be further provided below the fingerprint recognition module 140, and the fingerprint recognition module 140 may be soldered to the circuit through a pad.
  • the board 150 is used for electrical interconnection and signal transmission with other peripheral circuits or other components of the electronic device 100 through the circuit board 150.
  • the fingerprint recognition module 140 may receive a control signal of a processing unit of the electronic device 100 through the circuit board 150, and may further output the fingerprint detection signal to the electronic device through the circuit board 150. 100 processing unit or control unit.
  • FIG. 2 is a schematic flowchart of a multi-sensor-based screen fingerprint collection method 200 according to an embodiment of the present application.
  • the method 200 can be applied to a multi-sensor-based screen fingerprint collection system. As shown in FIG. 2, the method 200 include:
  • S210 Determine a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a user's pressing area on the display screen, wherein each fingerprint sensor corresponds to a sensing area, and the sensing areas corresponding to the plurality of fingerprint sensors constitute a fingerprint sensor. Describe the fingerprint collection area of the fingerprint collection system under the screen;
  • the fingerprint sensor in the embodiment of the present application may correspond to the light detection section 734 in FIG. 1, where each fingerprint sensor corresponds to a sensing area, and the sensing area of each fingerprint sensor may be understood as each fingerprint sensor used for fingerprints A detection (or fingerprint collection) area, and the sensing areas of each of the multiple fingerprint sensors are combined to form the fingerprint detection area of the fingerprint collection system, which can be used to implement large-area fingerprint collection. Fingerprint collection.
  • the plurality of fingerprint sensors may be disposed in a fingerprint module, and the fingerprint module may correspond to the optical fingerprint device 730 in FIG. 1, and the fingerprint module may be disposed on a display screen.
  • the fingerprint module may correspond to the optical fingerprint device 730 in FIG. 1, and the fingerprint module may be disposed on a display screen.
  • the under-screen fingerprint collection system may be provided in a fingerprint module, or the fingerprint collection system may be the fingerprint module, or the fingerprint collection system may include the fingerprint module.
  • the under-screen fingerprint collection system may also be set in an electronic device, or the fingerprint collection system may also be the electronic device.
  • the method 200 may be performed by a processing unit in an under-screen fingerprint collection system.
  • the functions performed by the processing unit may be performed by a microcontroller (Micro Control) in the fingerprint module.
  • MCU microcontroller
  • the processor of the electronic device or jointly executed by the MCU of the fingerprint module and the processor of the electronic device.
  • the fingerprint collection system may determine a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of the user on the display screen; and may further control the fingerprint sensor that is effectively pressed.
  • the working state other fingerprint sensors except the effectively pressed fingerprint sensor are in a non-working state, that is, only the effectively pressed fingerprint sensor is turned on, so that the user's fingerprint can be collected only through the effectively pressed fingerprint sensor.
  • Information is conducive to reducing the power consumption of the terminal.
  • the fingerprint collection system can control all the fingerprint sensors to be in an inoperative state, that is, can control the multiple fingerprint sensors to not perform fingerprints.
  • the collection is helpful to avoid fingerprint collection caused by the user's misoperation.
  • the fingerprint collection system can obtain the contact information of the user pressing the display screen, and further determine that the user is on the display screen according to the coordinate information of the touch point.
  • the pressing area is shown in Figure 3.
  • the fingerprint collection system may determine the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to the pressing area of the user. Further, it may control that the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors is in a working state. Other fingerprint sensors are in a non-working state, that is, only the fingerprint sensor that is effectively pressed is turned on, so that the fingerprint information input by the user is collected only through the fingerprint sensor that is effectively pressed. Further, the fingerprint recognition unit only needs to perform fingerprint authentication or fingerprint registration based on the fingerprint information of the user collected by the fingerprint sensor that is effectively pressed, which is beneficial to improving the fingerprint recognition efficiency.
  • the fingerprint recognition unit only needs to perform fingerprint matching according to the fingerprint information collected by the fingerprint sensor that is effectively pressed, and does not need to perform fingerprint matching based on the fingerprint information collected by all fingerprint sensors, which can reduce the matching time. , Improve the matching speed, which can improve the user experience.
  • the fingerprint collection system may include the fingerprint identification unit, or may not include the fingerprint identification unit. If the fingerprint collection system does not include the fingerprint identification unit, the fingerprint collection system may only The fingerprint information of the user collected by the effectively pressed fingerprint sensor is sent to the fingerprint recognition unit, so that the fingerprint recognition unit can perform subsequent fingerprint recognition operations.
  • the functions performed by the processing units in the fingerprint collection system may be performed by the same functional module, for example, a host module of an electronic device, or may be performed by multiple hosts.
  • the processing unit of the fingerprint collection system may include multiple function modules, such as a main control module, a touch control (Touch Panel) (TP) module, and a fingerprint control module.
  • the touch control module can be used For detecting a user's pressing area on the display screen, the fingerprint control module controls turning on at least one sensor that is effectively pressed.
  • the main control module may be used to determine which sensors are effectively pressed according to the pressing area, which is not limited in the embodiment of the present application. .
  • the touch control module may be integrated in a display screen, or may be a function module independent of the display screen.
  • the touch control module may be integrated in a processor of an electronic device.
  • the fingerprint control module may be integrated in the fingerprint module, or may be a functional module independent of the fingerprint module.
  • the fingerprint control module may be integrated in the processor of an electronic device. This is not limited.
  • the fingerprint sensor in a non-working state may include a sleep state and a power-off state.
  • the power supply is still turned on, but the fingerprint sensor is not woken up and fingerprint collection cannot be performed.
  • the power supply of the fingerprint sensor is turned off, so fingerprint collection cannot be performed in a power-off state.
  • the S210 specifically includes:
  • the fingerprint collection system can determine the area of the overlapping area of the pressing area and the sensing area of each fingerprint sensor, that is, the size of the pressing area of the user on the sensing area of each fingerprint sensor. Further, according to the overlapping area, Area, determine which fingerprint sensors are pressed, or which fingerprint sensors are effectively pressed.
  • the fingerprint collection system may determine that the fingerprint sensor whose area of the overlapping area is larger than a first threshold (for example, 50% of the area of the sensing area of the fingerprint sensor) is effectively pressed, or the fingerprint collection system may also determine that the area is the largest
  • a first threshold for example, 50% of the area of the sensing area of the fingerprint sensor
  • the K fingerprint sensors corresponding to the K overlapping regions are the fingerprint sensors that were effectively pressed.
  • the plurality of fingerprint sensors may include six fingerprint sensors, denoted as S1 to S6, and the fingerprint sensor S3 may be determined according to the area of the overlapping area of the pressing area and the sensing area of the six fingerprint sensors. And S6 are effectively pressed.
  • the method 200 further includes:
  • the threshold value of the number of fingerprint sensors that are effectively pressed is determined according to the security level of the first operation that triggers fingerprint collection and the first correspondence relationship, where the first correspondence relationship is the security level and the threshold value of the number of fingerprint sensors that are effectively pressed Corresponding relationship.
  • the first operation for triggering fingerprint collection may be a screen unlock operation of the terminal, or an access operation to an application program, or a payment operation, or the like.
  • the fingerprint authentication operation is required, which is not limited in the embodiment of the present application.
  • the fingerprint collection system may set a security level corresponding to the operation.
  • the screen unlock operation may be set to a low security level
  • the payment operation is set to a high security level
  • the access of non-payment application is Medium security level.
  • the fingerprint collection system can configure different thresholds of the number of validly pressed sensors for different security levels, that is, determine the first correspondence relationship.
  • the thresholds of the number of validly pressed fingerprint sensors corresponding to each security level can be used for Configure the maximum number of fingerprint sensors that can be turned on under this security level.
  • the fingerprint collection system can be configured with a lower number threshold for a low security level and a higher number threshold for a high security level. Then, for fingerprint acquisition triggered by a low security level operation (for example, a screen unlock operation), The fingerprint collection system can control only a small number of fingerprint sensors to be used for fingerprint collection, and only a small number of fingerprint sensors are used for fingerprint collection, which is beneficial to reducing the power consumption of the terminal. At the same time, fingerprint matching only needs to match short-length fingerprint information. It can increase the speed of fingerprint recognition; for fingerprint collection triggered by high security level operations (for example, payment operations), the fingerprint collection system can control a larger number of fingerprint sensors for fingerprint collection, which can increase the length of fingerprint information, and can Improve the security of fingerprint recognition.
  • a low security level operation for example, a screen unlock operation
  • the fingerprint collection system can control only a small number of fingerprint sensors to be used for fingerprint collection, and only a small number of fingerprint sensors are used for fingerprint collection, which is beneficial to reducing the power consumption of the terminal.
  • different security levels may correspond to different thresholds of the number of fingerprint sensors that are effectively pressed.
  • the fingerprint collection system may determine the number of fingerprint sensors that are effectively pressed according to the security level of the current operation. Threshold value. Further, the fingerprint collection system may determine the fingerprint sensor that is effectively pressed according to the area of the overlap area of the pressing area and each fingerprint sensor, and the number threshold value.
  • the threshold of the number of fingerprint sensors that are effectively pressed corresponding to the security level of the first operation that triggers fingerprint collection is K, where K is a positive integer
  • the The fingerprint acquisition system can first determine the K overlapping areas with the largest area among the multiple overlapping areas, and then determine the overlapping areas with an area larger than the second threshold (for example, 30% of the area of the sensing area of the fingerprint sensor) in the K overlapping areas. It is assumed that there are L, where L is a positive integer, and further, the fingerprint collection system may determine the L fingerprint sensors corresponding to the L overlapping areas as the fingerprint sensors that are effectively pressed.
  • the fingerprint collection system may first determine overlapping areas with an area larger than a second threshold (for example, 30% of the area of the sensing area of the fingerprint sensor) among the multiple overlapping areas, assuming P, and P is positive Integer, if P is greater than K, the fingerprint collection system can determine the K overlapping areas with the largest area among the P overlapping areas. Further, the fingerprint collecting system can determine the K fingerprint sensors corresponding to the K overlapping areas as The fingerprint sensor that was effectively pressed; or if P is less than or equal to K, the fingerprint collection system may directly determine the P fingerprint sensors corresponding to the P overlapping areas as the fingerprint sensors that were effectively pressed.
  • a second threshold for example, 30% of the area of the sensing area of the fingerprint sensor
  • the security level corresponding to each operation may be set by the system or may be set by the user, for example, the user may set the security level by operating the setting interface of the electronic device or the setting interface of the application; similarly The user can also set the threshold of the number of sensors that are effectively pressed corresponding to each security level by operating the setting interface of the electronic device or the setting interface of the application.
  • the threshold number of fingerprint sensors that are effectively pressed corresponding to a low security level may be determined according to the number of fingerprint sensors that can be pressed by a single finger, and the fingerprint sensors that are effectively pressed corresponding to a high security level
  • the number threshold may be determined according to the number of fingerprint sensors to which at least two fingers can be pressed.
  • fingerprints can be collected for a single finger, so fingerprint recognition can be performed based on the fingerprint information of a single finger, which is helpful to increase the speed of fingerprint recognition and reduce the power consumption of the terminal; for high security
  • fingerprints can be collected for at least two fingers, so that fingerprint recognition can be performed based on the fingerprint information of at least two fingers, which is beneficial to improving the security of fingerprint recognition. Therefore, according to the specific application scenario, determining the fingerprint recognition strategy is beneficial to consider both the power consumption of the terminal and the security of fingerprint recognition.
  • the threshold of the number of fingerprint sensors that are effectively pressed corresponding to each security level can be determined as follows:
  • the fingerprint collection system may determine a threshold value of the number of fingerprint sensors that are effectively pressed corresponding to a low security level, or P + 1, P-1, and a threshold value of the number of fingerprint sensors that are effectively pressed corresponding to a high security level. It is 2P, 2P-1 or 3P, 3P-1, etc., that is, the number of fingerprint sensors that can be turned on is different for different security levels. The higher the security level, the more fingerprint sensors can be turned on, which is conducive to taking into account the power consumption of the terminal. And fingerprint recognition security.
  • the method further includes:
  • the terminal after determining which fingerprint sensors are effectively pressed, it can be controlled to light only the sensing areas of the fingerprint sensors that are effectively pressed, rather than lighting the sensing areas of all fingerprint sensors, which is beneficial to reducing the power consumption of the terminal.
  • it can be controlled to light only the sensing areas of the fingerprint sensors S3 and S6.
  • the method 200 further includes:
  • Fingerprint identification is performed based on the user's fingerprint information collected by the effectively pressed fingerprint sensor.
  • the fingerprint recognition unit only needs to perform fingerprint matching on the fingerprint information collected by the effectively pressed fingerprint sensor instead of fingerprint matching on the fingerprint information collected by all fingerprint sensors, which can increase the matching speed and reduce the load on the terminal.
  • the method for fingerprint collection may include the following steps:
  • the effectively pressed fingerprint sensor collects the user's fingerprint information, and uploads the collected fingerprint information to the processor of the electronic device.
  • the processor of the terminal device performs operations such as fingerprint identification or fingerprint registration according to the fingerprint information collected by the fingerprint sensor that is effectively pressed.
  • the S42, S43, S44, S45, and S47 may all be executed by a main control module of the electronic device.
  • the S42 and S44 may be executed by a touch control module of a display screen
  • the S45 may be executed by a fingerprint control module of a fingerprint device
  • the S43 and S47 may be executed by a main control module of an electronic device, wherein the fingerprint
  • the control module may be integrated in the processor of the electronic device or in the fingerprint device.
  • the touch control module may be integrated in the processor of the electronic device or in the display screen, which is not limited in the embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a multi-sensor-based under-screen fingerprint collection system according to an embodiment of the present application. As shown in FIG. 7, the system 300 includes:
  • Multiple fingerprint sensors 331 for collecting fingerprint information of a user
  • a processing unit 320 is configured to determine a fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of the user on the display screen, and control the fingerprint sensor that is effectively pressed to be in a working state, except that the fingerprint sensor is effectively pressed.
  • the fingerprint sensors other than the fingerprint sensor are in a non-working state, and the fingerprint information of the user is collected through the effectively pressed fingerprint sensor, wherein each fingerprint sensor corresponds to a sensing area, and the plurality of fingerprint sensors correspond to The sensing area constitutes a fingerprint collection area of the under-screen fingerprint collection system.
  • the processing unit 320 is further configured to:
  • the processing unit 320 is specifically configured to:
  • the fingerprint sensor corresponding to the overlapping area having an area larger than the first threshold is determined as the fingerprint sensor that is effectively pressed.
  • the processing unit 320 is further configured to:
  • the threshold value of the number of fingerprint sensors that are effectively pressed is determined according to the security level of the first operation that triggers fingerprint collection and the first correspondence relationship, where the first correspondence relationship is the security level and the threshold value of the number of fingerprint sensors that are effectively pressed Corresponding relationship.
  • the processing unit 320 is further configured to:
  • the effectively pressed fingerprint sensor among the plurality of fingerprint sensors is determined.
  • the processing unit 320 is specifically configured to:
  • a fingerprint sensor corresponding to the target overlapping area is determined as the fingerprint sensor that is effectively pressed.
  • the first security level corresponds to N fingerprint sensors
  • the second security level corresponds to M fingerprint sensors
  • the first security level is higher than the first security level.
  • Two security levels wherein N and M are positive integers, and N is greater than M.
  • M is the number of fingerprint sensors that can be pressed by a single finger
  • N is the number of fingerprint sensors that can be pressed by at least two fingers.
  • the processing unit 320 is further configured to:
  • the processing unit 320 is further configured to:
  • the processing unit 320 may be disposed in a fingerprint module or an electronic device, wherein the fingerprint module includes a plurality of fingerprint sensors.
  • the processing unit 320 is a microcontroller MCU in a fingerprint module or a processor in an electronic device.
  • the processing unit 320 includes:
  • a touch control module configured to determine the fingerprint sensor that is effectively pressed among the plurality of fingerprint sensors according to a pressing area of the user on the display screen;
  • a fingerprint control module is used to control the opening and closing of the plurality of fingerprint sensors.
  • the processing unit 320 further includes:
  • a fingerprint recognition module is configured to perform fingerprint recognition according to the fingerprint information of the user collected by the fingerprint sensor that was effectively pressed.
  • the touch control module is provided in an electronic device
  • the fingerprint control module is provided in an electronic device or a fingerprint module
  • the fingerprint identification module is provided in an electronic device or a fingerprint module .
  • the on-screen fingerprint collection system 300 may correspond to the fingerprint collection system in the foregoing embodiment, which may be used to perform related operations of the foregoing method embodiments, and for the sake of brevity, details are not repeated here.
  • FIG. 8 is a schematic block diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 8, the electronic device 50 includes:
  • the under-screen fingerprint collection system 53 includes multiple fingerprint sensors 531 and a processing unit 532.
  • the under-screen fingerprint collection system 53 may correspond to the under-screen fingerprint collection system 300 in FIG. Operation, for brevity, will not repeat them here.
  • the number, size, and arrangement of the fingerprint sensors shown in the embodiments of the present application are merely examples, and can be adjusted according to actual needs, which is not particularly limited in the embodiments of the present application.
  • the number of the plurality of fingerprint sensors may be two, three, four, or five, and the like, and the plurality of fingerprint sensors may be rectangularly distributed or circularly distributed.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FieldProgrammable Gate Array, FPGA), or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • FPGA fieldProgrammable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the terminal or the electronic device in the embodiment of the present application may further include a memory
  • the memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores one or more programs, the one or more programs include instructions, and the instructions should be a portable electronic device including multiple application programs When executed, the portable electronic device can be caused to execute the method in the embodiment shown in FIG. 2 and FIG. 6.
  • the embodiment of the present application also provides a computer program, the computer program includes instructions, and when the computer program is executed by a computer, the computer can execute the method in the embodiments shown in FIG. 2 and FIG. 6.
  • An embodiment of the present application further provides a chip.
  • the chip includes an input-output interface, at least one processor, at least one memory, and a bus.
  • the at least one memory is used to store instructions, and the at least one processor is used to call the at least one memory. Instructions to execute the method of the embodiment shown in FIG. 2 and FIG. 6.
  • the size of the sequence numbers of the above processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or a part of the technical solution may be embodied in the form of a software product, where the computer software product is stored in a storage medium , Including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks or compact discs, and other media that can store program codes .

Abstract

一种基于多传感器的屏下指纹采集方法、系统和电子设备，应用于包括多个指纹传感器的屏下指纹采集系统，所述方法包括：根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态；通过所述被有效按压的指纹传感器采集所述用户的指纹信息。

Description

基于多传感器的屏下指纹采集方法、系统和电子设备 技术领域
本申请涉及指纹技术领域，并且更具体地，涉及一种基于多传感器的屏下指纹采集方法、系统和电子设备。
背景技术
屏下指纹识别装置可以内置于手机的显示屏内，不必拘泥于特定的尺寸，可实现大面积的指纹识别，相当于增加了密码的长度，提高了指纹识别的安全性。但是大面积的指纹识别需要更长的指纹匹配时间，导致终端的功耗较大，影响用户体验。
发明内容
本申请实施例提供一种基于多传感器的屏下指纹采集方法、系统和电子设备，能够降低终端的功耗。
第一方面，提供了一种基于多传感器的屏下指纹采集方法，应用于包括多个指纹传感器的屏下指纹采集系统，所述方法包括：
根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；
控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态；
通过所述被有效按压的指纹传感器采集所述用户的指纹信息。
在一种可能的实现方式中，所述根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，包括：
确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
在一种可能的实现方式中，所述根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按 压的指纹传感器，包括：
将面积大于第一阈值的重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
在一种可能的实现方式中，所述方法还包括：
根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定所述被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
在一种可能的实现方式中，所述根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器，包括：
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合所述被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
在一种可能的实现方式中，所述根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合所述被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器，包括：
确定所述按压区域与所述每个指纹传感器的感应区域的重叠区域中面积最大的K个重叠区域，其中，所述K为所述第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值；
确定所述K个重叠区域中面积大于第二阈值的目标重叠区域；
将所述目标重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
在一种可能的实现方式中，在所述第一对应关系中，第一安全等级对应N个指纹传感器，第二安全等级对应M个指纹传感器，所述第一安全等级高于所述第二安全等级，其中，所述N，M为正整数，且所述N大于M。
在一种可能的实现方式中，所述M为单个手指能够按压到的指纹传感器的数量，所述N为至少两个手指能够按压到的指纹传感器的数量。
在一种可能的实现方式中，所述方法还包括：
控制点亮所述显示屏上所述被有效按压的指纹传感器对应的区域。
在一种可能的实现方式中，所述方法还包括：
根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指 纹识别。
在一种可能的实现方式中，所述其他指纹传感器处于不工作状态为所述其他指纹传感器处于休眠状态或关机状态。
第二方面，提供了一种基于多传感器的屏下指纹采集系统，包括：
多个指纹传感器，用于采集用户的指纹信息，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；
处理单元，用于根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态，通过所述被有效按压的指纹传感器采集所述用户的指纹信息。
可选地，所述处理单元还用于：确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
可选地，所述处理单元具体用于：将面积大于第一阈值的重叠区域对应的指纹传感器确定为被有效按压的指纹传感器。
可选地，所述处理单元还用于：根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
可选地，所述处理单元还用于：根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
可选地，所述处理单元具体用于：确定所述按压区域与所述每个指纹传感器的感应区域的重叠区域中面积最大的K个重叠区域，其中，所述K为所述第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值；
确定所述K个重叠区域中面积大于第二阈值的目标重叠区域；
将所述目标重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
可选地，在所述第一对应关系中，第一安全等级对应N个指纹传感器， 第二安全等级对应M个指纹传感器，所述第一安全等级高于所述第二安全等级，其中，所述N，M为正整数，且所述N大于M。
可选地，所述M为单个手指能够按压到的指纹传感器的数量，所述N为至少两个手指能够按压到的指纹传感器的数量。
可选地，所述处理单元还用于：控制点亮所述显示屏上所述被有效按压的指纹传感器的感应区域。
可选地，所述处理单元还用于：根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
可选地，所述处理单元设置在指纹模组或电子设备中，其中，所述指纹模组包括所述多个指纹传感器。
可选地，所述处理单元为指纹模组中的微控制器MCU或电子设备中的处理器。
可选地，所述处理单元包括：
触摸控制模块，用于根据所述用户在显示屏上的按压区域，确定所述多个指纹传感器中所述被有效按压的指纹传感器；
指纹控制模块，用于控制所述多个指纹传感器的开启和关闭。
可选地，所述处理单元还包括：
指纹识别模块，用于根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
可选地，所述触摸控制模块设置于电子设备中，所述指纹控制模块设置于电子设备或指纹模组中，所述指纹识别模块设置于电子设备或指纹模组中。
第三方面，提供了一种芯片，该芯片包括输入输出接口、至少一个处理器、至少一个存储器和总线，该至少一个存储器用于存储指令，该至少一个处理器用于调用该至少一个存储器中的指令，以执行第一方面或第一方面的任一可能的实现方式中的方法。
第四方面，提供了一种电子设备，包括如第二方面或第二方面的任一可能的实现方式中的屏下指纹采集系统。
第五方面，提供了一种电子设备，包括如第三方面中的芯片。
第六方面，提供了一种计算机可读介质，用于存储计算机程序，所述计算机程序包括用于执行上述第一方面或第一方面的任一可能的实现方式中 的指令。
第七方面，提供了一种包括指令的计算机程序产品，当计算机运行所述计算机程序产品的所述指时，所述计算机执行上述第一方面或第一方面的任一可能的实现方式中的屏下指纹采集方法。
具体地，该计算机程序产品可以运行于上述第四方面中的电子设备上。
因此，本申请实施例的指纹采集方案，可以根据用户在显示屏上的按压区域，确定多个指纹传感器中被有效按压的指纹传感器，然后控制只开启被有效按压的指纹传感器，从而只通过被有效按压的指纹传感器进行指纹采集，有利于降低终端的功耗，进一步地，在进行指纹识别时，只需要对被有效按压的指纹传感器采集的指纹信息进行指纹匹配，而不需要对所有的指纹传感器采集的指纹信息进行指纹匹配，有利于降低匹配时间，提升用户体验。
附图说明
图1A是根据本申请一实施例的电子设备的定向视图。
图1B是图1A所示的电子设备沿A-A’的部分剖面结构示意图。
图2是根据本申请实施例的基于多传感器的屏下指纹采集方法的示意性流程图。
图3是确定按压区域的一例示意图。
图4是确定被有效按压的指纹传感器的一例示意图。
图5是确定被有效按压的指纹传感器的数量阈值的一例示意图。
图6是根据本申请另一实施例的屏下指纹采集方法的流程图。
图7是根据本申请实施例的基于多传感器的屏下指纹采集系统的示意性框图。
图8是根据本申请实施例的电子设备的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
应理解，本申请实施例可以应用于指纹系统，包括但不限于光学、超声波或其他指纹识别系统和基于光学、超声波或其他指纹成像的医疗诊断产品，本申请实施例仅以光学指纹系统为例进行说明，但不应对本申请实施例构成任何限定，本申请实施例同样适用于其他采用光学、超声波或其他成像 技术的系统等。
还应理解，本申请实施例的技术方案除了可以进行指纹识别外，还可以进行其他生物特征识别，例如，掌纹识别、虹膜识别、人脸识别等，本申请实施例对此也不限定。
随着电子设备步入全面屏时代，电子设备正面指纹采集区域受到全面屏的挤压，因此屏下(Under-display或者Under-screen)指纹识别技术越来越受到关注。屏下指纹识别技术是指将指纹识别模组(比如指纹识别模组)安装在显示屏下方，从而实现在显示屏的显示区域内进行指纹识别操作，不需要在电子设备正面除显示区域外的区域设置指纹采集区域。
光学屏下指纹识别技术使用从设备显示组件的顶面返回的光来进行指纹感应和其他感应操作。该返回的光携带与该顶面接触的物体(例如手指)的信息，通过采集和检测该返回的光，实现位于显示屏下方的特定光学传感器模块。光学传感器模块的设计可以为通过恰当地配置用于采集和检测返回的光的光学元件来实现期望的光学成像。
应理解，本申请实施例的技术方案可以应用于各种电子设备，例如智能手机、笔记本电脑、平板电脑、游戏设备等便携式或移动计算设备，以及电子数据库、汽车、银行自动柜员机(Automated Teller Machine，ATM)等其他电子设备，但本申请实施例对此并不限定。
图1示出了指纹识别装置可以适用的电子设备100的示意图，其中图1A为电子设备100的正面示意图，图1B为图1A所示的电子设备100沿A-A’的部分剖面结构示意图。
如图1所示，电子设备100可以包括显示屏120和指纹识别模组140，其中，所述显示屏120具有显示区域102，所述指纹识别模组140设置在所述显示屏120的下方。
所述显示屏120可以为自发光显示屏，其采用具有自发光的显示单元作为显示像素。比如显示屏120可以为有机发光二极管(Organic Light-EmittingDiode，OLED)显示屏或者微型发光二极管(Micro-LED)显示屏。在其他替代实施例中，所述显示屏120也可以为液晶显示屏(Liquid Crystal Display，LCD)或者其他被动发光显示屏，本申请实施例对此不做限制。
另一方面，所述显示屏120例如可以为触控显示屏，其不仅可以进行画面显示，还可以检测用户的触摸或者按压操作，从而为用户提供一个人机交 互界面。比如，在一种实施例中，所述电子设备100可以包括触摸传感器，所述触摸传感器可以具体为触控面板(Touch Panel，TP)，其可以设置在所述显示屏120表面，也可以部分集成或者整体集成到所述显示屏120内部，从而形成所述触控显示屏。
所述指纹识别模组140可以具体为光学指纹识别模组，其主要用于采集用户的指纹信息(比如指纹图像信息)。在本申请实施例中，所述指纹识别模组140可以至少设置在所述显示屏120下方的局部区域，从而使得所述指纹识别模组140的指纹采集区域(或感应区域)130至少部分位于所述显示屏120的显示区域102，这里，指纹采集区域130的面积可以与指纹识别模组140的面积不同，例如通过例如透镜成像的光路设计、反射式折叠光路设计或者其他光线汇聚或者反射等光路设计，可以使得所述指纹识别模组140的指纹采集区域130的面积大于指纹识别模组140的面积。在其他替代实现方式中，如果采用例如光线准直方式进行光路引导，所述指纹识别模组140的指纹采集区域130也可以设计成与所述指纹识别模组140的面积相一致。
作为一种实施例，所述指纹识别模组140可以具体包括多个具有光学感应阵列的光学指纹传感器142(后面也称为传感器芯片)；所述多个光学指纹传感器142可以并排设置在所述显示屏120的下方。其中，每一个光学感应阵列142分别包括多个光学感应单元，且所述光学感应阵列的所在区域对应于其所在的光学指纹传感器的感应区域103，所述多个光学指纹传感器的感应区域共同构成所述指纹识别模组140的指纹采集区域130。也即是说，所述指纹识别模组140的指纹采集区域130可以包括多个子区域，每个子区域分别对应于其中一个光学指纹传感器或光学感应阵列的感应区域。如图1A所示，所述指纹采集区域130位于所述显示屏120的显示区域102之中，由于采用多个光学指纹传感器并排设置的方式，所述指纹识别模组140的指纹采集区域130可以扩展到所述显示区域102的下半部分的主要区域，即扩展到手指惯常按压区域，从而实现盲按式指纹输入操作。在其他替代实施例中，当所述光学指纹传感器数量足够时，所述指纹采集区域130还可以扩展到半个显示区域甚至整个显示区域，从而实现半屏或者全屏指纹检测。因此，用户在需要对所述电子设备100进行解锁或者其他指纹验证的时候，只需要将手指按压在位于所述显示屏120的指纹采集区域130，便可以实现指纹输入操作。由于指纹采集和检测可以在所述显示屏120的显示区域102内部实现， 采用上述结构的电子设备100无需其正面专门预留空间来设置指纹按键(比如Home键)，因而可以采用全面屏方案。因此，所述显示屏120的显示区域102可以基本扩展到所述电子设备100的整个正面。
在具体实施例中，所述指纹识别模组140的多个光学指纹传感器142可以分别是独立封装的传感器芯片，也可以是制作为多个芯片(Die)之后封装在同一个芯片封装体之内，还可以是通过半导体工艺制作在同一个芯片(Die)的不同区域。另一方面，所述光学指纹传感器142除了包括如上所述的光学感应阵列以外，还可以与所述感应阵列电性连接的读取电路和/或其他辅助电路。作为一种可选的实现方式，如图1B所示，所述光学指纹传感器142上方还可以设置有光路调制器144。以所述光路调制器144为例，其可以作为独立的光学部件贴合在所述光学指纹传感器142的感应阵列上方，也可以通过半导体工艺集成在所述光学指纹传感器142的芯片内部，从而实现超薄的指纹识别模组140。具体地，所述光路调制器144可以是采用具有高深宽比的通孔阵列的光准直器，主要用于对向下传播的指纹检测光进行准直、调制和成像等，实现将从手指表面反射回来的反射光导引至所述感应阵列进行光学检测以获取指纹图像信息。
可选地，与所述指纹识别模组140的多个光学指纹传感器142相对应，所述光路调制器144可以有多个，每一个光路调制器144分别对应一个光学指纹传感器，并分别贴合设置在其对应的光学指纹传感器142的上方。或者，所述多个光学指纹传感器142也可以共享一个整体的光路调制器144，即所述光路调制器144具有一个足够大的面积以覆盖所述多个光学指纹传感器142的感应阵列。另外，在所述光路调制器144和所述光学指纹传感器142之间或者所述显示屏120与所述光路调制器144之间，还可以设置有其他光学元件，比如滤光片(Filter)或者其他光学膜片，其主要用于隔离外界干扰光对光学指纹检测的影响。其中，所述滤光片可以用于滤除穿透手指并进过所述显示屏120进入所述图像识别传感器130的环境光，与所述光路调制器144相类似，所述滤光片可以在每个光学指纹传感器142分别设置进行干扰光滤除，或者也可以采用一个大面积滤光片同时覆盖所述多个光学指纹传感器142。
可替代地，所述光路调制器144也可以采用光学镜头(Lens)来代替，所述光学镜头上方可以通过遮光材料形成小孔配合所述光学镜头将指纹检测 光汇聚到下方的光学指纹传感器142以实现指纹成像。相类似地，每一个光学指纹传感器142可以分别配置一个光学镜头进行指纹成像，或者，所述多个光学指纹传感器142也可以利用同一个光学镜头来实现光线汇聚和指纹成像。在其他替代实施例中，每一个光学指纹传感器142甚至还可以具有两个感应阵列(Dual Array)或者多个感应阵列(Multi-Array)，且同时配置两个或多个光学镜头配合所述两个或多个感应阵列进行光学成像，从而减小成像距离并增强成像效果。
本申请实施例以所述显示屏120采用OLED显示屏为例，所述显示屏120的发光层具有呈阵列式排布的OLED显示单元阵列，所述指纹识别模组140可以利用所述OLED显示屏120位于所述指纹采集区域130的OLED显示单元(即OLED光源)作为指纹检测识别的激励光源。当然，应当理解，在其他替代实现方案中，该指纹识别模组140也可以采用内置光源或者外置光源来提供用于进行指纹检测识别的光信号。在这种情况下，屏下指纹识别装置不仅可以适用于如OLED显示屏等自发光显示屏，还可以适用于非自发光显示屏，比如液晶显示屏或者其他的被动发光显示屏。以应用在具有背光模组和液晶面板的液晶显示屏为例，为支持液晶显示屏的屏下指纹检测，对还可以包括用于光学指纹检测的激励光源，所述激励光源可以具体为红外光源或者特定波长非可见光的光源。以红外光源为例，其可以设置在所述液晶显示屏的背光模组下方或者设置在所述电子设备100的保护盖板下方的边缘区域，而所述指纹识别模组140设置在所述背光模组下方，且所述背光模组通过对扩散片、增亮片、反射片等膜层进行开孔或者其他光学设计以允许指纹检测光穿过液晶面板和背光模组并到达所述指纹识别模组140的光学指纹传感器。
并且，所述指纹识别模组140的光学感应阵列具体为光探测器(Photo detector)阵列(或称为光电探测器阵列)，其包括多个呈阵列式分布的光探测器，所述光探测器可以作为如上所述的光学感应单元，所述光探测器上方还可以形成有微透镜来提高指纹图像的成像效果。
当手指触摸、按压或者接近(为便于描述，在本申请中统称为按压)在所述指纹采集区域130时，所述指纹采集区域130的显示单元或者额外配置的指纹检测激励光源发出的光线在手指发生反射并形成反射光，其中所述反射光可以携带有用户手指的指纹信息。比如，所述光线被用户手指表面的指 纹发生反射之后，由于手指指纹的纹脊和纹谷的反射光是不同的，因此反射光便携带有用户的指纹信息。所述反射光返回所述显示屏120并被其下方的指纹识别模组140的光探测器阵列所接收并且转换为相应的电信号，即指纹检测信号。所述电子设备100基于所述指纹检测信号便可以获得用户的指纹信息，并且可以进一步进行指纹匹配验证，从而完成当前用户的身份验证以便于确认其是否有权限对所述电子设备100进行相应的操作。
应当理解的是，在具体实现上，所述电子设备100还包括保护盖板110，所述盖板110可以具体为透明盖板，比如玻璃盖板或者蓝宝石盖板，其位于所述显示屏120的上方并覆盖所述电子设备100的正面，且所述保护盖板110表面还可以设置有保护层。因此，本申请实施例中，所谓的手指按压所述显示屏120实际上可以是指手指按压在所述显示屏120上方的盖板110或者覆盖所述盖板110的保护层表面。
另一方面，所述指纹识别模组140的下方还可以设置有电路板150，比如软性电路板(Flexible Printed Circuit，FPC)，所述指纹识别模组140可以通过焊盘焊接到所述电路板150，并通过所述电路板150实现与其他外围电路或者所述电子设备100的其他元件的电性互连和信号传输。比如，所述指纹识别模组140可以通过所述电路板150接收所述电子设备100的处理单元的控制信号，并且还可以通过所述电路板150将所述指纹检测信号输出给所述电子设备100的处理单元或者控制单元等。
图2是根据本申请实施例的基于多传感器的屏下指纹采集方法200的示意性流程图，该方法200可以应用于基于多传感器的屏下指纹采集系统，如图2所示，该方法200包括：
S210，根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；
S220，控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态；
S230，通过所述被有效按压的指纹传感器采集所述用户的指纹信息。
应理解，本申请实施例的指纹传感器可以对应于图1中的光检测部分734，其中，每个指纹传感器对应一个感应区域，每个指纹传感器的感应区域可以理解为每个指纹传感器用于指纹检测(或者说，指纹采集)的区域， 该多个指纹传感器中的每个指纹传感器的感应区域组合起来构成该指纹采集系统的指纹检测区域，可以用于实现大面积的指纹采集，例如，多个手指的指纹采集。
可选地，在本申请实施例中，该多个指纹传感器可以设置在指纹模组中，该指纹模组可以对应于图1中的光学指纹装置730，该指纹模组可以设置于显示屏的下方。
可选地，在一些实施例中，该屏下指纹采集系统可以设置于指纹模组中，或者，该指纹采集系统可以为该指纹模组，或者，该指纹采集系统可以包括该指纹模组。
可选地，在另一些实施例中，该屏下指纹采集系统也可以设置在电子设备中，或者，该指纹采集系统也可以为该电子设备。
可选地，在本申请实施例中，该方法200可以由屏下指纹采集系统中的处理单元执行，具体地，该处理单元所执行的功能可以由指纹模组中的微控制器(Micro Control Unit，MCU)执行，或者也可以由电子设备的处理器执行，或者由该指纹模组的MCU和电子设备的处理器共同执行。
以下，以指纹采集系统为执行主体来描述本申请实施例的指纹采集方法。
在本申请实施例中，该指纹采集系统可以根据用户在所述显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器；进一步可以控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态，即只开启被有效按压的指纹传感器，从而可以只通过被有效按压的指纹传感器采集所述用户的指纹信息，有利于降低终端的功耗。
可选地，在本申请实施例中，若被有效按压的指纹传感器的数量等于零，该指纹采集系统可以控制所有的指纹传感器都处于不工作状态，即可以控制该多个指纹传感器都不进行指纹采集，有利于避免用户的误操作导致的指纹采集。
具体地，当用户的手指按压该多个指纹传感器上方的显示屏时，该指纹采集系统可以获取用户按压该显示屏的触点信息，进一步可以根据该触点的坐标信息确定用户在显示屏上的按压区域，如图3所示。然后，该指纹采集系统可以根据该用户的按压区域，确定该多个指纹传感器中被有效按压的指 纹传感器，进一步地，可以控制该多个指纹传感器中被有效按压的指纹传感器处于工作状态，控制其他指纹传感器处于不工作状态，即只开启被有效按压的指纹传感器，从而只通过被有效按压的指纹传感器采集用户输入的指纹信息。进一步地，指纹识别单元只需根据被有效按压的指纹传感器采集的用户的指纹信息进行指纹认证或指纹注册等操作，有利于提升指纹识别效率。
也就是说，在本申请实施例中，该指纹识别单元只需根据被有效按压的指纹传感器采集的指纹信息进行指纹匹配，而不必根据所有指纹传感器采集的指纹信息进行指纹匹配，能够降低匹配时间，提升匹配速度，从而能够提升用户体验。
可选地，在本申请实施例中，该指纹采集系统可以包括该指纹识别单元，或者也可以不包括该指纹识别单元，若该指纹采集系统不包括该指纹识别单元，该指纹采集系统可以只将被有效按压的指纹传感器采集到的用户的指纹信息发送给该指纹识别单元，以便于该指纹识别单元进行后续的指纹识别操作。
需要说明的是，本申请实施例中，该指纹采集系统中的处理单元所执行的功能可以是由同一功能模块来执行的，例如，电子设备的主控(host)模块，或者也可以由多个功能模块来执行，例如，该指纹采集系统的处理单元可以包括多个功能模块，例如，主控模块，触摸控制(Touch Panel，TP)模块和指纹控制模块，其中，该触摸控制模块可以用于检测用户在显示屏上的按压区域，该指纹控制模块控制开启被有效按压的至少一个传感器，主控模块可以用于根据按压区域确定哪些传感器被有效按压等，本申请实施例对此不作限定。
可选地，在本申请实施例中，该触摸控制模块可以是集成在显示屏中的，或者也可以是独立于显示屏的功能模块，例如，该触摸控制模块可以集成在电子设备的处理器中；该指纹控制模块可以是集成在指纹模组中的，或者也可以是独立于指纹模组的功能模块，例如，该指纹控制模块可以集成在电子设备的处理器中，本申请实施例对此不作限定。
应理解，在本申请实施例中，指纹传感器处于不工作状态可以包括休眠状态和断电状态，当指纹传感器处于休眠状态时，供电电源依然开启，但是指纹传感器未被唤醒，不能进行指纹采集，当指纹传感器处于断电状态时，指纹传感器的供电电源关闭，因此，断电状态也不能进行指纹采集。
可选地，在一些实施例中，所述S210具体包括：
确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
具体而言，该指纹采集系统可以确定按压区域与每个指纹传感器的感应区域的重叠区域的面积，即用户在每个指纹传感器的感应区域上的按压面积的大小，进一步地，根据该重叠区域的面积，确定哪些指纹传感器有按压，或者说，哪些指纹传感器被有效按压。
可选地，该指纹采集系统可以确定重叠区域的面积大于第一阈值(例如，该指纹传感器的感应区域的面积的50％)的指纹传感器被有效按压，或者该指纹采集系统也可以确定面积最大的K个重叠区域对应的K个指纹传感器为被有效按压的指纹传感器。例如，如图4所示，该多个指纹传感器可以包括6个指纹传感器，记为S1～S6，根据该按压区域与该6个指纹传感器的感应区域的重叠区域的面积，可以确定指纹传感器S3和S6被有效按压。
可选地，在一些实施例中，所述方法200还包括：
根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
应理解，在本申请实施例中，触发指纹采集的第一操作可以是终端的熄屏解锁操作，或者也可以是对应用程序的访问操作，或者也可以是支付类操作等，或者也可以其他需要进行指纹认证的操作，本申请实施例对此不作限定。
在本申请实施例中，该指纹采集系统可以设置操作对应的安全等级，例如，可以设置熄屏解锁操作为低安全等级，设置支付类操作为高安全等级，非支付类的应用程序的访问为中安全等级。该指纹采集系统可以为不同的安全等级配置不同的被有效按压的传感器的数量阈值，即确定该第一对应关系，这里，每个安全等级对应的被有效按压的指纹传感器的数量阈值可以用于配置此安全等级下可以开启的指纹传感器的最大数量，通过为不同的安全等级配置不同的数量阈值，有利于灵活调整不同的安全等级下采集的指纹信息的长度，即密码长度，从而能够兼顾指纹识别的速度和安全性。
例如，该指纹采集系统可以为低安全等级配置较低的数量阈值，为高安全等级配置较高的数量阈值，那么，对于低安全等级的操作(例如，熄屏解锁操作)触发的指纹采集，该指纹采集系统可以控制只开启少量的指纹传感器执行指纹采集，只通过少量的指纹传感器进行指纹采集，有利于降低终端的功耗，同时，进行指纹匹配时只需匹配较短长度的指纹信息，能够提升指纹识别速度；对于高安全等级的操作(例如，支付类操作)触发的指纹采集，该指纹采集系统可以控制开启数量较多的指纹传感器进行指纹采集，能够提升指纹信息的长度，进而能够提升指纹识别的安全性。
也就是说，在本申请实施例中，不同的安全等级可以对应不同的被有效按压的指纹传感器的数量阈值，该指纹采集系统可以根据当前操作的安全等级，确定被有效按压的指纹传感器的数量阈值，进一步地，该指纹采集系统可以根据按压区域与每个指纹传感器上的重叠区域的面积，结合该数量阈值，确定被有效按压的指纹传感器。
可选地，若在第一对应关系中，触发指纹采集的第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值为K，其中，K为正整数，在一实施例中，该指纹采集系统可以首先在多个重叠区域中确定面积最大的K个重叠区域，然后在该K个重叠区域中确定面积大于第二阈值(例如，指纹传感器的感应区域面积的30％)的重叠区域，假设有L个，其中，L为正整数，进一步该指纹采集系统可以将该L个重叠区域对应的L个指纹传感器确定为被有效按压的指纹传感器。
在另一实施例中，该指纹采集系统可以首先在多个重叠区域中确定面积大于第二阈值(例如，指纹传感器的感应区域面积的30％)的重叠区域，假设有P个，P为正整数，若该P大于K，则该指纹采集系统可以在该P个重叠区域中确定面积最大的K个重叠区域，进一步该指纹采集系统可以将该K个重叠区域对应的K个指纹传感器确定为被有效按压的指纹传感器；或若该P小于或等于K，则该指纹采集系统可以直接将该P个重叠区域对应的P个指纹传感器确定为被有效按压的指纹传感器。
应理解，每个操作对应的安全等级，可以是系统设置的，或者也可以是由用户设置的，例如，用户可以通过操作电子设备的设置界面或应用程序的设置界面进行安全等级设置；类似地，用户也可以通过操作电子设备的设置界面或应用程序的设置界面设置每个安全等级对应的被有效按压的传感器 的数量阈值。
在一些可选的实现方式中，低安全等级对应的被有效按压的指纹传感器的数量阈值可以是根据单个手指能够按压到的指纹传感器的数量确定的，高安全等级对应的被有效按压的指纹传感器的数量阈值可以是根据至少两个手指能够按压到的指纹传感器的数量确定的。
也就是说，对于低安全等级的操作而言，可以对单个手指进行指纹采集，从而可以根据单个手指的指纹信息进行指纹识别，有利于提升指纹识别的速度，降低终端的功耗；对于高安全等级的操作而言，可以对至少两个手指进行指纹采集，从而可以根据至少两个手指的指纹信息进行指纹识别，有利于提升指纹识别的安全性。因此，根据具体的应用场景，确定指纹识别策略，有利于兼顾终端的功耗和指纹识别的安全性。
在一种具体实现中，可以按照如下方式确定每个安全等级对应的被有效按压的指纹传感器的数量阈值：
如图5所示，假设单个指纹传感器的感应区域的尺寸为W*H，用户在显示屏上的按压区域通常为圆形或椭圆形，假设按压区域的长轴为R1，短轴为R2，其中，该R1和R2可以是对大量手指在显示屏上的按压区域的尺寸进行训练得到的，则单个手指能够按压到的指纹传感器的数量近似为P＝[(R1*R2)/(W*H)]，其中，[]表示取整。可选地，该指纹采集系统可以确定低安全等级对应的被有效按压的指纹传感器的数量阈值为P，或者P+1，P-1，高安全等级对应的被有效按压的指纹传感器的数量阈值为2P，2P-1或3P，3P-1等，即不同的安全等级所能开启的指纹传感器的数量不同，安全等级越高能够开启的指纹传感器的数量越多，有利于兼顾终端的功耗和指纹识别的安全性。
可选地，在一些实施例中，所述方法还包括：
控制点亮所述显示屏上所述被有效按压的指纹传感器的感应区域。
具体地，在确定哪些指纹传感器被有效按压后，可以控制只点亮被有效按压的指纹传感器的感应区域，而非点亮所有指纹传感器的感应区域，有利于降低终端的功耗，例如，对于图3所示的示例，可以控制只点亮指纹传感器S3和S6的感应区域。
可选地，在一些实施例中，该方法200还包括：
根据所述被有效按压的指纹传感器采集的用户的指纹信息进行指纹识 别。
即该指纹识别单元只需对被有效按压的指纹传感器采集的指纹信息进行指纹匹配，而不是对所有指纹传感器采集的指纹信息都进行指纹匹配，能够提升匹配速度，同时能够降低终端的负荷。
以下，结合图6所示的具体实现，说明根据本申请一具体实施例的指纹采集的方法。如图6所示，该指纹采集的方法可以包括如下步骤：
S41，用户按压显示屏上指纹传感器的感应区域；
S42，获取用户在显示屏上的按压区域；
S43，根据按压区域，确定多个指纹传感器中被有效按压的指纹传感器。
S44，控制点亮被有效按压的指纹传感器的感应区域。
S45，控制开启被有效按压的指纹传感器，即控制该被有效按压的指纹传感器处于工作状态，其他指纹传感器处于不工作状态。
S46，被有效按压的指纹传感器采集用户的指纹信息，并将采集的指纹信息上传给电子设备的处理器。
S47，终端设备的处理器根据被有效按压的指纹传感器采集的指纹信息进行指纹识别或指纹注册等操作。
可选地，在一些实施例中，该S42、S43、S44、S45和S47都可以由电子设备的主控模块来执行。
可选地，该S42和S44可以由显示屏的触摸控制模块来执行，该S45可以由指纹装置的指纹控制模块来执行，S43和S47可以由电子设备的主控模块来执行，其中，该指纹控制模块可以集成在电子设备的处理器中，也可以集成在指纹装置中，该触摸控制模块可以集成在电子设备的处理器中，也可以集成在显示屏中，本申请实施例不作限定。
上文结合图2至图6，详细描述了本申请的方法实施例，下文结合图7，详细描述本申请的装置实施例，应理解，装置实施例与方法实施例相互对应，类似的描述可以参照装置实施例。
图7是根据本申请实施例的基于多传感器的屏下指纹采集系统的示意性框图，如图7所示，该系统300包括：
多个指纹传感器331，用于采集用户的指纹信息；
处理单元320，用于根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，控制所述被有效按压的指纹传感器处 于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态，通过所述被有效按压的指纹传感器采集所述用户的指纹信息，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域。
可选地，在一些实施例中，所述处理单元320还用于：
确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
可选地，在一些实施例中，所述处理单元320具体用于：
将面积大于第一阈值的重叠区域对应的指纹传感器确定为被有效按压的指纹传感器。
可选地，在一些实施例中，所述处理单元320还用于：
根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
可选地，在一些实施例中，所述处理单元320还用于：
根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
可选地，在一些实施例中，所述处理单元320具体用于：
确定所述按压区域与所述每个指纹传感器的感应区域的重叠区域中面积最大的K个重叠区域，其中，所述K为所述第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值；
确定所述K个重叠区域中面积大于第二阈值的目标重叠区域；
将所述目标重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
可选地，在一些实施例中，在所述第一对应关系中，第一安全等级对应N个指纹传感器，第二安全等级对应M个指纹传感器，所述第一安全等级高于所述第二安全等级，其中，所述N，M为正整数，且所述N大于M。
可选地，在一些实施例中，所述M为单个手指能够按压到的指纹传感 器的数量，所述N为至少两个手指能够按压到的指纹传感器的数量。
可选地，在一些实施例中，所述处理单元320还用于：
控制点亮所述显示屏上所述被有效按压的指纹传感器的感应区域。
可选地，在一些实施例中，所述处理单元320还用于：
根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
可选地，在一些实施例中，该处理单元320可以设置在指纹模组或电子设备中，其中，该指纹模组包括多个指纹传感器。
可选地，在一些实施例中，所述处理单元320为指纹模组中的微控制器MCU或电子设备中的处理器。
可选地，在一些实施例中，所述处理单元320包括：
触摸控制模块，用于根据所述用户在显示屏上的按压区域，确定所述多个指纹传感器中所述被有效按压的指纹传感器；
指纹控制模块，用于控制所述多个指纹传感器的开启和关闭。
可选地，在一些实施例中，所述处理单元320还包括：
指纹识别模块，用于根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
可选地，在一些实施例中，所述触摸控制模块设置于电子设备中，所述指纹控制模块设置于电子设备或指纹模组中，所述指纹识别模块设置于电子设备或指纹模组中。
应理解，具体地，该屏下指纹采集系统300可以对应于前述实施例中的指纹采集系统，其可以用于执行前述方法实施例的相关操作，为了简洁，这里不再赘述。
图8是根据本申请实施例的电子设备的示意性框图，如图8所示，该电子设备50包括：
显示屏51；
屏下指纹采集系统53，包括多个指纹传感器531和处理单元532，其中，该屏下指纹采集系统53可以对应于图7中的屏下指纹采集系统300，其可以执行前述方法实施例的相关操作，为了简洁，这里不再赘述。
应理解，本申请实施例所示的指纹传感器的数量、尺寸和排布情况仅为示例,可以根据实际需求进行调整，本申请实施例对此并不特别限定。例如， 该多个指纹传感器的个数可以为2个，3个，4个或5个等，该多个指纹传感器可以呈矩形分布，或者呈圆形分布等
应理解，本申请实施例的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(FieldProgrammable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例的终端或电子设备还可以包括存储器，存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提出了一种计算机可读存储介质，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图2和图6所示实施例的方法。
本申请实施例还提出了一种计算机程序，该计算机程序包括指令，当该计算机程序被计算机执行时，使得计算机可以执行图2和图6所示实施例的方法。
本申请实施例还提供了一种芯片，该芯片包括输入输出接口、至少一个处理器、至少一个存储器和总线，该至少一个存储器用于存储指令，该至少一个处理器用于调用该至少一个存储器中的指令，以执行图2和图6所示实施例的方法。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应所述理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方， 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者所述技术方案的部分可以以软件产品的形式体现出来，所述计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (25)

  1. 一种基于多传感器的屏下指纹采集方法，其特征在于，应用于包括多个指纹传感器的屏下指纹采集系统，所述方法包括：
    根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；
    控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态；
    通过所述被有效按压的指纹传感器采集所述用户的指纹信息。
  2. 根据权利要求1所述的方法，其特征在于，所述根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，包括：
    确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
    根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器，包括：
    将面积大于第一阈值的重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
  4. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定所述被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
  5. 根据权利要求4所述的方法，其特征在于，所述根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器，包括：
    根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合所述被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述按压区域 与所述每个指纹传感器的感应区域的重叠区域的面积，结合所述被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器，包括：
    确定所述按压区域与所述每个指纹传感器的感应区域的重叠区域中面积最大的K个重叠区域，其中，所述K为所述第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值；
    确定所述K个重叠区域中面积大于第二阈值的目标重叠区域；
    将所述目标重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
  7. 根据权利要求4至6中任一项所述的方法，其特征在于，在所述第一对应关系中，第一安全等级对应N个指纹传感器，第二安全等级对应M个指纹传感器，所述第一安全等级高于所述第二安全等级，其中，所述N，M为正整数，且所述N大于M。
  8. 根据权利要求7所述的方法，其特征在于，所述M为单个手指能够按压到的指纹传感器的数量，所述N为至少两个手指能够按压到的指纹传感器的数量。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    控制点亮所述显示屏上所述被有效按压的指纹传感器对应的区域。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述方法还包括：
    根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
  11. 一种基于多传感器的屏下指纹采集系统，其特征在于，包括：
    多个指纹传感器，用于采集用户的指纹信息，其中，每个指纹传感器对应一个感应区域，所述多个指纹传感器对应的感应区域组成所述屏下指纹采集系统的指纹采集区域；
    处理单元，用于根据用户在显示屏上的按压区域，确定所述多个指纹传感器中被有效按压的指纹传感器，控制所述被有效按压的指纹传感器处于工作状态，除所述被有效按压的指纹传感器之外的其他指纹传感器处于不工作状态，通过所述被有效按压的指纹传感器采集所述用户的指纹信息。
  12. 根据权利要求11所述的屏下指纹采集系统，其特征在于，所述处理单元还用于：
    确定所述按压区域与所述多个指纹传感器中的每个指纹传感器的感应区域的重叠区域；
    根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
  13. 根据权利要求12所述的屏下指纹采集系统，其特征在于，所述处理单元具体用于：
    将面积大于第一阈值的重叠区域对应的指纹传感器确定为被有效按压的指纹传感器。
  14. 根据权利要求12所述的屏下指纹采集系统，其特征在于，所述处理单元还用于：
    根据触发指纹采集的第一操作的安全等级，以及第一对应关系，确定被有效按压的指纹传感器的数量阈值，其中，所述第一对应关系为安全等级和被有效按压的指纹传感器的数量阈值的对应关系。
  15. 根据权利要求14所述的屏下指纹采集系统，其特征在于，所述处理单元还用于：
    根据所述按压区域与所述每个指纹传感器的感应区域的重叠区域的面积，结合被有效按压的指纹传感器的数量阈值，确定所述多个指纹传感器中所述被有效按压的指纹传感器。
  16. 根据权利要求15所述的屏下指纹采集系统，其特征在于，所述处理单元具体用于：
    确定所述按压区域与所述每个指纹传感器的感应区域的重叠区域中面积最大的K个重叠区域，其中，所述K为所述第一操作的安全等级对应的被有效按压的指纹传感器的数量阈值；
    确定所述K个重叠区域中面积大于第二阈值的目标重叠区域；
    将所述目标重叠区域对应的指纹传感器确定为所述被有效按压的指纹传感器。
  17. 根据权利要求14至16中任一项所述的屏下指纹采集系统，其特征在于，在所述第一对应关系中，第一安全等级对应N个指纹传感器，第二安全等级对应M个指纹传感器，所述第一安全等级高于所述第二安全等级， 其中，所述N，M为正整数，且所述N大于M。
  18. 根据权利要求17所述的屏下指纹采集系统，其特征在于，所述M为单个手指能够按压到的指纹传感器的数量，所述N为至少两个手指能够按压到的指纹传感器的数量。
  19. 根据权利要求11至18中任一项所述的屏下指纹采集系统，其特征在于，所述处理单元还用于：
    控制点亮所述显示屏上所述被有效按压的指纹传感器的感应区域。
  20. 根据权利要求11至19中任一项所述的屏下指纹采集系统，其特征在于，所述处理单元还用于：
    根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
  21. 根据权利要求11至20中任一项所述的屏下指纹采集系统，其特征在于，所述处理单元为指纹模组中的微控制器MCU或电子设备中的处理器，其中，所述指纹模组包括所述多个指纹传感器。
  22. 根据权利要求11至21中任一项所述的屏下指纹采集系统，所述处理单元包括：
    触摸控制模块，用于根据所述用户在显示屏上的按压区域，确定所述多个指纹传感器中所述被有效按压的指纹传感器；
    指纹控制模块，用于控制所述多个指纹传感器的开启和关闭。
  23. 根据权利要求22所述的屏下指纹采集系统，其特征在于，所述处理单元还包括：
    指纹识别模块，用于根据所述被有效按压的指纹传感器采集的所述用户的指纹信息进行指纹识别。
  24. 根据权利要求23所述的屏下指纹采集系统，其特征在于，所述触摸控制模块设置于电子设备中，所述指纹控制模块设置于电子设备或指纹模组中，所述指纹识别模块设置于电子设备或指纹模组中。
  25. 一种电子设备，其特征在于，包括如权利要求11至24中任一项所述的屏下指纹采集系统。
PCT/CN2018/107382 2018-09-25 2018-09-25 基于多传感器的屏下指纹采集方法、系统和电子设备 WO2020061759A1 (zh)

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