WO2020061754A1 - 基于多传感器的屏下指纹认证方法、系统和电子设备 - Google Patents

基于多传感器的屏下指纹认证方法、系统和电子设备 Download PDF

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Publication number
WO2020061754A1
WO2020061754A1 PCT/CN2018/107368 CN2018107368W WO2020061754A1 WO 2020061754 A1 WO2020061754 A1 WO 2020061754A1 CN 2018107368 W CN2018107368 W CN 2018107368W WO 2020061754 A1 WO2020061754 A1 WO 2020061754A1
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WIPO (PCT)
Prior art keywords
fingerprint
template
target
information
correspondence relationship
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Application number
PCT/CN2018/107368
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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.)
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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 CN201880001633.0A priority Critical patent/CN109416738A/zh
Priority to PCT/CN2018/107368 priority patent/WO2020061754A1/zh
Publication of WO2020061754A1 publication Critical patent/WO2020061754A1/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
    • G06V10/751—Comparing pixel values or logical combinations thereof, or feature values having positional relevance, e.g. template matching
    • 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
    • G06V40/1365—Matching; Classification

Definitions

  • the present application relates to the field of fingerprint technology, and more specifically, to a multi-sensor-based fingerprint authentication method, system, and electronic device.
  • the fingerprint recognition device under the screen can be built into the display screen of the mobile phone without having to stick to a specific size. It can realize large-scale fingerprint recognition, which is equivalent to increasing the length of the password and improving the security of the fingerprint recognition, but the longer the password length , The longer it takes for fingerprint matching to increase the power consumption of the terminal device and affect the user experience. Therefore, how to carry out fingerprint recognition to take into account the user experience and the security of fingerprint recognition is an urgent problem to be solved.
  • Embodiments of the present application provide a multi-sensor-based fingerprint authentication method, system, and electronic device, which are beneficial to balance user experience and security of fingerprint recognition.
  • a multi-sensor-based under-screen fingerprint authentication method which is applied to an under-screen fingerprint authentication system including multiple fingerprint sensors, and the method includes:
  • 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 authentication system;
  • determining the fingerprint authentication result according to the target fingerprint information and / or the target fingerprint template includes: according to the quantity of the target fingerprint information and / or the target fingerprint template. The number determines the fingerprint authentication result.
  • the determining the fingerprint authentication result according to the quantity of the target fingerprint information and / or the quantity of the target fingerprint template includes:
  • the number of target fingerprint information is greater than or equal to a specific sample number threshold, and / or the number of target fingerprint templates is greater than or equal to a specific template number threshold, it is determined that fingerprint authentication is successful.
  • the method further includes:
  • the determining the specific sample quantity threshold and / or the specific template quantity threshold according to a security level of an operation that triggers fingerprint authentication includes:
  • the first security level corresponds to a first sample number threshold and a first template number threshold
  • the second security level corresponds to a second sample number threshold and a second template.
  • a number threshold the first security level is higher than the second security level
  • the first sample number threshold is greater than the second sample number threshold
  • the first template number threshold is greater than the second template number Threshold.
  • the first sample number threshold is determined according to the number of fingerprint sensors that can be pressed by at least two fingers, and the second sample number threshold is based on the fingerprint that can be pressed by a single finger. The number of sensors is determined.
  • the first template number threshold is greater than or equal to 2
  • the second template number threshold is 1.
  • determining the fingerprint authentication result according to the target fingerprint information and / or the target fingerprint template includes:
  • the fingerprint authentication result is determined according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the fingerprint sensor and the fingerprint template.
  • the determining the fingerprint authentication result according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence includes: if the target fingerprint information corresponds to And the fingerprint template successfully matched with the target fingerprint information satisfy the second correspondence relationship, and it is determined that the fingerprint authentication is successful.
  • the first fingerprint template corresponds to at least one first fingerprint sensor
  • the second fingerprint template corresponds to at least one second fingerprint sensor
  • the target fingerprint information includes the first Fingerprint information and second fingerprint information
  • the target fingerprint template includes a first fingerprint template and a second fingerprint template, wherein the first fingerprint information is from a first fingerprint sensor and the second fingerprint information is from a second fingerprint sensor;
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint template successfully matched with the target fingerprint information satisfy the second correspondence relationship, including:
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint sensor The fingerprint template whose target fingerprint information matches successfully satisfies the second correspondence relationship.
  • determining the fingerprint authentication result according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship includes:
  • determining the fingerprint authentication result according to the target fingerprint information and / or the target fingerprint template includes:
  • the fingerprint authentication result is determined according to the security level of the operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship, wherein the third correspondence relationship is a correspondence relationship between the security level and the fingerprint template.
  • the first security level corresponds to a specific fingerprint template
  • the second security level corresponds to an arbitrary fingerprint template
  • the first security level is higher than the second security level.
  • the specific fingerprint template is a fingerprint template corresponding to a right index finger and / or a left middle finger.
  • determining the fingerprint authentication result according to a security level of an operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship includes:
  • a third correspondence relationship determines the fingerprint authentication result.
  • the method further includes:
  • multiple fingerprint information of the user collected by the multiple fingerprint sensors is acquired; and the registered fingerprint template is determined according to the fingerprint information of the user collected by the multiple fingerprint sensors.
  • an under-screen fingerprint authentication system based on multiple sensors including:
  • a processing unit configured to obtain multiple fingerprint information of a user collected by multiple fingerprint sensors; sequentially matching the multiple fingerprint information and at least one registered fingerprint template to determine target fingerprint information that is successfully matched and / or with the target fingerprint information A target fingerprint template matched by the target fingerprint information; and determining a fingerprint authentication result according to the target fingerprint information and / or the target fingerprint template, wherein each fingerprint sensor corresponds to a sensing area, and the plurality of fingerprint sensors correspond to sensing The area constitutes the fingerprint collection area of the under-screen fingerprint authentication system.
  • the processing unit is specifically configured to determine the fingerprint authentication result according to the quantity of the target fingerprint information and / or the quantity of the target fingerprint template.
  • the processing unit is specifically configured to:
  • the number of target fingerprint information is greater than or equal to a specific sample number threshold, and / or the number of target fingerprint templates is greater than or equal to a specific template number threshold, it is determined that fingerprint authentication is successful.
  • the processing unit is further configured to:
  • the processing unit is specifically configured to:
  • the first security level corresponds to a first sample number threshold and a first template number threshold
  • the second security level corresponds to a second sample number threshold and a second template.
  • a number threshold the first security level is higher than the second security level
  • the first sample number threshold is greater than the second sample number threshold
  • the first template number threshold is greater than the second template number Threshold.
  • the first sample number threshold is determined according to the number of fingerprint sensors that can be pressed by at least two fingers, and the second sample number threshold is based on the fingerprint that can be pressed by a single finger. The number of sensors is determined.
  • the first template number threshold is greater than or equal to 2
  • the second template number threshold is 1.
  • the processing unit is further configured to:
  • the fingerprint authentication result is determined according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the fingerprint sensor and the fingerprint template.
  • the processing unit is specifically configured to:
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint template that successfully matches the target fingerprint information satisfy the second correspondence relationship, it is determined that the fingerprint authentication is successful.
  • the first fingerprint template corresponds to at least one first fingerprint sensor
  • the second fingerprint template corresponds to at least one second fingerprint sensor
  • the target fingerprint information includes the first Fingerprint information and second fingerprint information
  • the target fingerprint template includes a first fingerprint template and a second fingerprint template, wherein the first fingerprint information comes from the first fingerprint sensor and the second fingerprint information comes from the first Two fingerprint sensors;
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint template successfully matched with the target fingerprint information satisfy the second correspondence relationship, including:
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint sensor The fingerprint template whose target fingerprint information matches successfully satisfies the second correspondence relationship.
  • the processing unit is specifically configured to:
  • the fingerprint sensor corresponding to the target fingerprint information determines the fingerprint authentication result.
  • the processing unit is further configured to:
  • the fingerprint authentication result is determined according to the security level of the operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship, wherein the third correspondence relationship is a correspondence relationship between the security level and the fingerprint template.
  • the first security level corresponds to a specific fingerprint template
  • the second security level corresponds to an arbitrary fingerprint template
  • the first security level is higher than the second security level.
  • the specific fingerprint template is a fingerprint template corresponding to a right index finger and / or a left middle finger.
  • the processing unit is specifically configured to:
  • a third correspondence relationship determines the fingerprint authentication result.
  • the multiple fingerprint sensors are further configured to: collect multiple fingerprint information of the user when the user performs fingerprint registration;
  • the processing unit is further configured to determine the registered fingerprint template according to the fingerprint information of the user collected by the multiple fingerprint sensors.
  • the processing unit is a microcontroller MCU in a fingerprint module or a processor in an electronic device, wherein the fingerprint module includes the plurality of fingerprint sensors.
  • 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 authentication system as in the second aspect or any possible implementation manner of the second 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 instructions of the computer program product, the computer executes the first aspect or any possible implementation manner of the first aspect.
  • Method of fingerprint authentication is provided.
  • the computer program product can be run on the electronic device in the fourth aspect.
  • the fingerprint authentication solution in the embodiment of the present application can sequentially match multiple fingerprint information collected by multiple fingerprint sensors with registered fingerprint templates, and determine the target fingerprint information and the fingerprint information that have been successfully matched among the multiple fingerprint information.
  • the target fingerprint information matches the successful target fingerprint template.
  • the fingerprint authentication result can be determined according to the target fingerprint information or the target fingerprint template, which is beneficial to take into account the user experience and the security of fingerprint recognition.
  • 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 an under-screen fingerprint authentication method according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a correspondence relationship between a fingerprint sensor and a fingerprint template.
  • FIG. 4 is a schematic flowchart of an off-screen fingerprint authentication method according to another embodiment of the present application.
  • FIG. 5 is a schematic flowchart of an off-screen fingerprint authentication method according to still another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an off-screen fingerprint authentication system according to an embodiment of the present application.
  • FIG. 7 is a schematic structural 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 use the optical fingerprint system as an example. However, 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. It should be understood that, in addition to fingerprint recognition, the technical solutions of the embodiments of the present application may 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 a human-computer interaction interface for the user.
  • 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.
  • 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 the control signal of the 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.
  • the inductive array in the optical fingerprint device may also be referred to as an image sensor (Sensor) or a photoelectric sensor, and may be made into a DIE after being processed by a semiconductor process, that is, the DIE includes an image sensor.
  • an image sensor Sensor
  • a photoelectric sensor a photoelectric sensor
  • optical fingerprint device in the embodiments of the present application may also be referred to as an optical fingerprint identification module, a fingerprint device, a fingerprint identification device, a fingerprint identification module, a fingerprint module, a fingerprint collection device, and the like.
  • FIG. 2 is a schematic flowchart of a multi-sensor-based fingerprint collection method 200 according to an embodiment of the present application.
  • the method 200 may be applied to a multi-sensor-based fingerprint authentication system under the screen. As shown in FIG. 2, the method 200 includes :
  • S210 Acquire multiple fingerprint information of a user collected by multiple fingerprint sensors, wherein 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 authentication system;
  • S220 Match the plurality of fingerprint information with at least one registered fingerprint template in order to determine target fingerprint information that is successfully matched and / or a target fingerprint template that matches the target fingerprint information;
  • the fingerprint sensor in the embodiment of the present application may correspond to the light detection section 734 in FIG. 1, each fingerprint sensor corresponds to a sensing area, and the sensing area of each fingerprint sensor may be understood as each fingerprint sensor is used for fingerprint detection ( (In other words, fingerprint collection), the sensing areas of each of the multiple fingerprint sensors are combined to form the fingerprint detection area of the fingerprint authentication system, which can be used to achieve large-scale fingerprint collection, for example, multiple fingers 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. Up.
  • the multiple fingerprint information may be the fingerprint information of a single finger, or may also be the fingerprint information of multiple fingers, and the fingerprint template in the at least one fingerprint template may be the fingerprint of one finger.
  • the template or the fingerprint template of multiple fingers may not be limited in the embodiment of the present application.
  • the plurality of fingerprint information may correspond to the plurality of fingerprint sensors 111 one by one, that is, the plurality of fingerprint information may include a fingerprint collected by each fingerprint sensor of the plurality of fingerprint sensors. Information, or the plurality of fingerprint information may only include fingerprint information collected by a part of the plurality of fingerprint sensors, for example, the plurality of fingerprint information may include only the fingerprint sensor collected by the plurality of fingerprint sensors that are effectively pressed.
  • the fingerprint information is not limited in the embodiment of the present application.
  • the on-screen fingerprint authentication system may be provided in a fingerprint module, or the fingerprint authentication system may be the fingerprint module, or the fingerprint authentication system may include the fingerprint module.
  • the under-screen fingerprint authentication system may also be provided in an electronic device, or the fingerprint authentication system may also be the electronic device.
  • the method 200 may be executed by a processing unit in an under-screen fingerprint authentication system, and the functions performed by the processing unit may be performed by a microcontroller (Micro Control Unit, MCU) in the fingerprint module. ), Or may be executed by the processor of the electronic device, or jointly performed by the MCU of the fingerprint module and the processor of the electronic device.
  • MCU Micro Control Unit
  • a fingerprint authentication system is used as an execution subject to describe the fingerprint collection method in the embodiment of the present application.
  • the user when performing fingerprint authentication (or fingerprint identification, fingerprint matching), the user can press the multiple fingerprint sensors (specifically, the user presses the display screen above the multiple fingerprint sensors), and the multiple fingerprint sensors can Collect the user's fingerprint information, and record the user's fingerprint information collected by a fingerprint sensor as a fingerprint information or a fingerprint sample, the fingerprint authentication system can obtain multiple fingerprint information collected by the multiple fingerprint sensors, and then can Fingerprint information is sequentially matched with at least one registered fingerprint template to determine target fingerprint information that successfully matches the at least one fingerprint template among the plurality of fingerprint information, wherein the target fingerprint information may include one or more fingerprint information, Alternatively, the fingerprint authentication system may also determine a target fingerprint template that successfully matches the target fingerprint information.
  • the target fingerprint template may include one or more fingerprint templates, so that the fingerprint authentication system may use the target fingerprint information or the target fingerprint template. Determine if fingerprint authentication is successful.
  • the fingerprint authentication is successful when the number of target fingerprint information is greater than a specific sample number threshold, or to determine that the fingerprint authentication is successful when the number of target fingerprint templates is greater than a specific template number threshold, or when the number of target fingerprint information and the When the number of target fingerprint templates is greater than a certain number threshold, it is determined that the fingerprint authentication is successful.
  • the process of fingerprint matching between the plurality of fingerprint information and the at least one fingerprint template if the number of successfully matched target fingerprint information is greater than the specific sample number threshold, or the target When the number of fingerprint templates is greater than the threshold of the specific template number, subsequent fingerprint matching can be stopped, and fingerprint authentication can be directly determined to be successful, which can shorten fingerprint matching time and improve user experience.
  • the method 200 further includes:
  • the operation for triggering fingerprint authentication may be a screen unlock operation of the terminal, or an application access operation, or a payment operation, or other fingerprints may be required.
  • the authentication operation is not limited in this embodiment of the present application.
  • the security level corresponding to the operation can be set.
  • the screen-off unlock operation can be set to a low security level
  • the payment operation is set to a high security level
  • the access operation of a non-payment application is a medium security level.
  • the sample number threshold corresponding to each security level can be understood as the need for successful matching under this security level.
  • the minimum number of fingerprint samples and the threshold of the number of templates corresponding to each security level can be understood as the minimum number of fingerprint templates that need to be successfully matched under this security level.
  • a lower sample number threshold or template number threshold may be configured for a low security level, and a higher sample number threshold or template number threshold may be configured for a high security level.
  • the fingerprint authentication triggered by the operation (for example, unlocking the screen is turned off) can determine that the fingerprint authentication is successful when a small number of fingerprint samples are successfully matched, which can improve the user experience; for high security levels (for example, payment operations)
  • the fingerprint authentication triggered by the operation can determine that the fingerprint authentication is successful when a large number of fingerprint samples are successfully matched, which can improve the security of fingerprint identification.
  • the security level corresponding to each operation may be set by the system, or may be set by the user.
  • the user may perform the operation through the setting interface of the electronic device or the setting interface of the application.
  • Security level setting similarly, the user can also set the sample number threshold or template number threshold corresponding to each security level by operating the setting interface of the electronic device or the setting interface of the application.
  • Unlock operations correspond to low security levels.
  • Access operations of non-payment applications correspond to medium security levels.
  • Payment operations correspond to high security levels.
  • the threshold for the number of samples corresponding to the low security level is 1, the threshold for the number of samples corresponding to the middle security level is 2, and the threshold for the number of samples corresponding to the high security level is 3, for operations with low security levels, at least one fingerprint needs to be successfully matched Only samples can be used to determine fingerprint authentication success. For operations with medium security levels, at least two fingerprint samples must be successfully matched to determine fingerprint authentication success. For operations with high security levels, at least three fingerprint samples must be successfully matched to be determined. Fingerprint authentication succeeded.
  • the threshold for the number of samples 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 threshold for the number of samples corresponding to a high security level may be based on that at least two fingers can press The number of fingerprint sensors is determined.
  • fingerprint authentication can be determined to be successful, which can improve the user experience.
  • high-level security operations it can be performed at least two times.
  • determining the fingerprint authentication strategy is beneficial to achieve both the user experience and the security of fingerprint recognition, and improve the overall performance of fingerprint recognition.
  • the threshold for the number of templates corresponding to a high security level may be greater than or equal to 2, and the threshold for the number of first templates corresponding to a low security level may be 1, that is, for fingerprint authentication with a high security level, the matching needs to be successful at least
  • the fingerprint template of two fingers can determine the success of fingerprint authentication.
  • the fingerprint template of one finger can be matched to determine the success of fingerprint authentication, which is beneficial to achieve both the user experience and the security of fingerprint recognition and improve fingerprint recognition. Overall performance.
  • S230 may further include:
  • the fingerprint authentication result is determined according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the fingerprint sensor and the fingerprint template.
  • the fingerprint sensor and the fingerprint template may have a corresponding relationship
  • the fingerprint authentication system may also be based on whether the target fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template successfully matched with the target fingerprint information satisfy Correspondence, determine the fingerprint authentication result. For example, the fingerprint authentication system may determine that the fingerprint authentication is successful when the fingerprint sensor and the target fingerprint template satisfy the second correspondence relationship, otherwise, determine that the fingerprint authentication has failed.
  • the fingerprint authentication system may determine that the fingerprint authentication succeeds when each target fingerprint sensor and the target fingerprint template that successfully matches the target fingerprint information satisfy the second relationship, or may also determine at least one target fingerprint sensor and the target fingerprint. When the template satisfies the second correspondence relationship, it is determined that the fingerprint authentication is successful.
  • the embodiment of the present application does not specifically limit the number of fingerprint sensors and fingerprint templates that need to satisfy the second correspondence relationship.
  • the fingerprint authentication system may also determine the number of fingerprint sensors and fingerprint templates that need to satisfy the second correspondence relationship according to the security level of the operation that triggers fingerprint authentication. For example, the fingerprint authentication system may Setting a low security level requires a small number of fingerprint sensors that satisfy the second correspondence relationship, and a high security level requires a large number of fingerprint sensors that satisfy the second correspondence relationship, so that the speed and security of fingerprint recognition can be taken into account.
  • the first fingerprint template corresponds to at least one first fingerprint sensor
  • the second fingerprint template corresponds to at least one second fingerprint sensor
  • the target fingerprint information includes first fingerprint information and second fingerprint information
  • the target fingerprint template includes a first fingerprint template and a second fingerprint template, wherein the first fingerprint information is from a first fingerprint sensor and the second fingerprint information is from a second fingerprint sensor.
  • the fingerprint authentication system may determine a fingerprint when the first fingerprint information is successfully matched with the first fingerprint template, and / or the second fingerprint information is successfully matched with the second fingerprint template. The authentication is successful, otherwise it can be determined that the fingerprint authentication has failed.
  • a correspondence relationship between a fingerprint sensor and a fingerprint template may be set based on a user's pressing habits.
  • one or more fingerprints to the left of a plurality of fingerprint sensors may be set.
  • the sensor corresponds to the fingerprint template of the index finger
  • one or more fingerprint sensors in the middle are set to correspond to the fingerprint template of the middle finger
  • the one or more fingerprint sensors to the right correspond to the fingerprint template of the ring finger.
  • the multiple fingerprint sensors include fingerprint sensors S1 to S6.
  • fingerprint templates S1 and S4 may be set as fingerprint templates of the index finger
  • fingerprint sensors S2 and S5 may be set as fingerprint templates of the middle finger.
  • the fingerprint sensors S3 and S6 correspond to the fingerprint template of the ring finger. If the successfully matched fingerprint samples come from the fingerprint sensors S1 and S2, and the successfully matched fingerprint templates are the fingerprint templates of the index finger and the middle finger, respectively, it can be determined that the second correspondence relationship is satisfied, and then the fingerprint authentication can be determined to be successful. Therefore, in the embodiment of the present application, by setting a correspondence relationship between a fingerprint sensor and a fingerprint template, and further combining the correspondence relationship for fingerprint authentication, the security of fingerprint recognition can be further improved.
  • determining the fingerprint authentication result according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship includes:
  • the fingerprint authentication system may determine whether the target fingerprint sensor and the target fingerprint template corresponding to the target fingerprint information meet the second correspondence when it is determined that the number of the target fingerprint information and the number of the target fingerprint templates meet a certain condition. Further, when the second correspondence relationship is satisfied, it is determined that the fingerprint authentication is successful, otherwise it is determined that the fingerprint authentication has failed, which further improves the security of fingerprint identification.
  • the S230 may further include:
  • the fingerprint authentication result is determined according to the security level of the operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship, wherein the third correspondence relationship is a correspondence relationship between the security level and the fingerprint template.
  • the security level may also have a corresponding relationship with the fingerprint template. Therefore, the fingerprint authentication system may also be based on the security level of the operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship. Determine the fingerprint authentication result. For example, the fingerprint authentication system may determine that the fingerprint authentication is successful when the security level and the target fingerprint template satisfy a third correspondence relationship, otherwise, determine that the fingerprint authentication has failed.
  • a low security level corresponds to an arbitrary fingerprint template
  • a high security level corresponds to a specific fingerprint template. Then, at a low security level, the fingerprint authentication system can determine that any fingerprint template is successfully matched. The fingerprint authentication is successful, otherwise it is determined that the fingerprint authentication has failed; or at a high security level, the fingerprint authentication system determines that the fingerprint authentication is successful only if it successfully matches a specific fingerprint template, otherwise it determines that the fingerprint authentication has failed.
  • a specific fingerprint template corresponding to a high security level may be set based on a user's pressing habits.
  • the specific fingerprint template corresponding to the high security level may be set to the right index finger and / or the left middle finger. Fingerprint template.
  • determining the fingerprint authentication result according to a security level of an operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship includes:
  • the third correspondence relationship determines the fingerprint authentication result.
  • the fingerprint authentication system may determine the security level of the current operation that triggers fingerprint authentication and whether the target fingerprint template satisfies the condition that the number of the target fingerprint information and the number of the target fingerprint templates meet certain conditions.
  • the third correspondence relationship further, when the third correspondence relationship is satisfied, it is determined that the fingerprint authentication is successful, otherwise it is determined that the fingerprint authentication fails, which further improves the security of fingerprint identification.
  • the second correspondence relationship and the third correspondence relationship may be set by a system or may be set by a user.
  • the user may operate a setting interface or an application program of an electronic device.
  • the setting interface of the setting the second correspondence relationship and the third correspondence relationship may be set by a system or may be set by a user.
  • the method further includes:
  • a user can press multiple fingerprint sensors, and the multiple fingerprint sensors can collect user fingerprint information. Assuming that there are K fingerprint sensors, K fingerprint information can be collected. Further, the fingerprint authentication The system can determine the fingerprint template according to the K fingerprint information. For example, the K fingerprint information can be determined as a fingerprint template; or, the K fingerprint information can be used to determine the fingerprint sensor to be pressed, and the fingerprint sensor can be The fingerprint information collected by the pressed fingerprint sensor is determined as a fingerprint template; or, if the K fingerprint information is fingerprint information of multiple fingers, the multiple fingerprint information may also be divided and registered as multiple fingerprint templates. This embodiment of the present application does not limit this.
  • the fingerprint authentication system may determine a pressing area on each fingerprint sensor according to the plurality of fingerprint information, and further, determine a plurality of fingerprint sensors according to the pressing area on each fingerprint sensor. Fingerprint sensor that was effectively pressed.
  • the fingerprint authentication system compares the size of the sampled value of each pixel in each fingerprint information, and determines the pressing area on each fingerprint sensor according to the size of the sampled value of each pixel.
  • An area composed of pixels with a value greater than the first sampling threshold is determined as the pressing area on each fingerprint sensor.
  • the pressed fingerprint sensor may be determined according to the size of the pressed area on each fingerprint sensor. For example, it may be determined that a fingerprint sensor whose area is larger than a first threshold (for example, 50% of the area of the sensing area of the fingerprint sensor) is pressed, or that L fingerprint sensors corresponding to the L pressed areas with the largest area may be determined. Is a fingerprint sensor that is effectively pressed.
  • the fingerprint authentication method according to the number of target fingerprint samples and the number of target fingerprint templates is taken as an example to describe the method of fingerprint verification under the screen in the embodiment of the present application.
  • sample number threshold and the template number threshold that the target fingerprint sample needs to meet can be determined according to the method described in the previous embodiment, which is not repeated here. Let the sample number threshold be P and the template number threshold be Q.
  • the fingerprint authentication method may include the following steps:
  • S48 it is determined whether the number of successfully matched fingerprint samples is greater than or equal to the sample number threshold P. If it is determined that the fingerprint authentication is successful, otherwise, it is determined that the fingerprint authentication has failed.
  • step S46 it can be determined whether the number of samples i is greater than or equal to P, and if it is greater than or equal to P, it can be directly determined that the fingerprint authentication is successful without having to perform a subsequent matching process.
  • the fingerprint authentication method may include the following steps:
  • S58 it is determined whether the number of successfully matched fingerprint templates is greater than the template number threshold Q. If it is determined that the fingerprint authentication is successful, otherwise, it is determined that the fingerprint authentication has failed.
  • S56 it can be determined whether the number of successfully matched fingerprint templates is greater than or equal to Q. If it is greater than or equal to Q, the fingerprint authentication can be directly determined without having to perform the subsequent matching process.
  • FIG. 6 is a schematic block diagram of an on-screen fingerprint authentication system according to an embodiment of the present application. As shown in FIG. 6, the on-screen fingerprint authentication system 10 includes:
  • a processing unit 11 is configured to obtain multiple fingerprint information of a user collected by multiple fingerprint sensors, and sequentially match the multiple fingerprint information with at least one registered fingerprint template to determine the target fingerprint information that is successfully matched and / or match the target fingerprint information.
  • the target fingerprint template matched by the target fingerprint information; and determining a fingerprint authentication result according to the target fingerprint information and / or the target fingerprint template, 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 authentication system.
  • the processing unit 11 is specifically configured to:
  • the processing unit 11 is specifically configured to:
  • the number of target fingerprint information is greater than or equal to a specific sample number threshold, and / or the number of target fingerprint templates is greater than or equal to a specific template number threshold, it is determined that fingerprint authentication is successful.
  • the processing unit 11 is further configured to:
  • the processing unit 11 is specifically configured to:
  • the first security level corresponds to a first sample number threshold and a first template number threshold
  • the second security level corresponds to a second sample number threshold and a second Template number threshold
  • the first security level is higher than the second security level
  • the first sample number threshold is greater than the second sample number threshold
  • the first template number threshold is greater than the second template Quantity threshold
  • the first sample number threshold is determined according to the number of fingerprint sensors that can be pressed by at least two fingers, and the second sample number threshold is according to a single finger that can be pressed The number of fingerprint sensors is determined.
  • the first template number threshold is greater than or equal to 2, and the second template number threshold is 1.
  • the processing unit 11 is further configured to:
  • the fingerprint authentication result is determined according to whether a fingerprint sensor corresponding to the target fingerprint information and the target fingerprint template satisfy a second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the fingerprint sensor and the fingerprint template.
  • the processing unit 11 is specifically configured to:
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint template that successfully matches the target fingerprint information satisfy the second correspondence relationship, it is determined that the fingerprint authentication is successful.
  • the first fingerprint template corresponds to at least one first fingerprint sensor
  • the second fingerprint template corresponds to at least one second fingerprint sensor
  • the target fingerprint information includes a first A fingerprint information and a second fingerprint information
  • the target fingerprint template includes a first fingerprint template and a second fingerprint template, wherein the first fingerprint information comes from the first fingerprint sensor and the second fingerprint information comes from the A second fingerprint sensor;
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint template successfully matched with the target fingerprint information satisfy the second correspondence relationship, including:
  • the fingerprint sensor corresponding to the target fingerprint information and the fingerprint sensor The fingerprint template whose target fingerprint information matches successfully satisfies the second correspondence relationship.
  • the processing unit 11 is specifically configured to:
  • the processing unit 11 is further configured to:
  • the fingerprint authentication result is determined according to the security level of the operation that triggers fingerprint authentication and whether the target fingerprint template satisfies a third correspondence relationship, wherein the third correspondence relationship is a correspondence relationship between the security level and the fingerprint template.
  • the first security level corresponds to a specific fingerprint template
  • the second security level corresponds to any fingerprint template
  • the first security level is higher than the second security level. grade.
  • the specific fingerprint template is a fingerprint template corresponding to a right index finger and / or a left middle finger.
  • the processing unit 11 is specifically configured to:
  • a third correspondence relationship determines the fingerprint authentication result.
  • the multiple fingerprint sensors are further configured to collect multiple fingerprint information of the user when the user performs fingerprint registration;
  • the processing unit 11 is further configured to determine the registered fingerprint template according to the fingerprint information of the user collected by the multiple fingerprint sensors.
  • the processing unit 11 is a microcontroller MCU in a fingerprint module or a processor in an electronic device, wherein the fingerprint module includes the plurality of fingerprint sensors.
  • the number, size, and arrangement of the fingerprint sensors shown in the embodiments of the present application are merely examples, and the parameters such as the number, size, and arrangement of the multiple fingerprint sensors can be adjusted according to actual needs. This is not particularly limited.
  • the number of the plurality of fingerprint sensors may be two, three, four, or five, etc., 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 (Field, Programmable Gate Array, FPGA), or other Programming 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
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • 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 to FIG. 5.
  • An embodiment of the present application further provides a computer program, where the computer program includes instructions.
  • the computer program When the computer program is executed by a computer, the computer can execute the methods in the embodiments shown in FIG. 2 to FIG. 5.
  • 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. To execute the method in the embodiment shown in FIG. 2 to FIG. 5.
  • 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 .

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Abstract

一种基于多传感器的屏下指纹认证方法、系统和电子设备，该屏下指纹认证方法应用于包括多个指纹传感器的屏下指纹认证系统，包括：获取多个指纹传感器采集的用户的多个指纹信息，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认证系统的指纹采集区域；将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果。。

Description

基于多传感器的屏下指纹认证方法、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，涉及基于多传感器的屏下指纹认证方法、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，可以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，但是密码长度越长，指纹匹配所花费的时间也就越长，增加了终端设备的功耗，影响用户体验。因此，如何进行指纹识别，以兼顾用户体验和指纹识别的安全性是一项急需解决的问题。
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认证方法、系统和电子设备，有利于兼顾用户体验和指纹识别的安全性。
第一方面，提供了一种基于多传感器的屏下指纹认证方法，应用于包括多个指纹传感器的屏下指纹认证系统，所述方法包括：
获取多个指纹传感器采集的用户的多个指纹信息，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认证系统的指纹采集区域；
将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；
根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果。
在一种可能的实现方式中，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果。
在一种可能的实现方式中，所述根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果，包括：
若所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限，确定指纹认证成功。
在一种可能的实现方式中，所述方法还包括：
根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限。
在一种可能的实现方式中，所述根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限，包括：
根据所述操作的安全等级和第一对应关系，确定所述特定样本数量门限和/或所述特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
在一种可能的实现方式中，在所述第一对应关系中，第一安全等级对应第一样本数量门限和第一模板数量门限，第二安全等级对应第二样本数量门限和第二模板数量门限，所述第一安全等级高于所述第二安全等级，所述第一样本数量门限大于所述第二样本数量门限，所述第一模板数量门限大于所所述第二模板数量门限。
在一种可能的实现方式中，所述第一样本数量门限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，所述第二样本数量门限是根据单个手指能够按压到的指纹传感器的数量确定的。
在一种可能的实现方式中，所述第一模板数量门限大于等于2，所述第二模板数量门限为1。
在一种可能的实现方式中，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：
根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹传感器与指纹模板的对应关系。
在一种可能的实现方式中，所述根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，包括：若所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，确定指纹认证成功。
在一种可能的实现方式中，在所述第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自第一指纹传感 器，所述第二指纹信息来自第二指纹传感器；
所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，包括：
若所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功，则所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系。
在一种可能的实现方式中，所述根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，包括：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系，确定所述指纹认证结果。
在一种可能的实现方式中，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：
根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
在一种可能的实现方式中，在所述第三对应关系中，第一安全等级对应特定指纹模板，第二安全等级对应任意指纹模板，所述第一安全等级高于所述第二安全等级。
在一种可能的实现方式中，所述特定指纹模板为右手食指和/或左手中指对应的指纹模板。
在一种可能的实现方式中，所述根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，包括：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果。
在一种可能的实现方式中，所述方法还包括：
在用户进行指纹注册时，获取所述多个指纹传感器采集的所述用户的多个指纹信息；根据所述多个指纹传感器采集的所述用户的指纹信息，确定注 册的所述指纹模板。
第二方面，提供了一种基于多传感器的屏下指纹认证系统，包括：
处理单元，用于获取多个指纹传感器采集的用户的多个指纹信息；将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；并根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，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认证系统的指纹采集区域。
在一种可能的实现方式中，所述处理单元具体用于：根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果。
在一种可能的实现方式中，所述处理单元具体用于：
若所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限，确定指纹认证成功。
在一种可能的实现方式中，所述处理单元还用于：
根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限。
在一种可能的实现方式中，所述处理单元具体用于：
根据所述操作的安全等级和第一对应关系，确定所述特定样本数量门限和/或所述特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
在一种可能的实现方式中，在所述第一对应关系中，第一安全等级对应第一样本数量门限和第一模板数量门限，第二安全等级对应第二样本数量门限和第二模板数量门限，所述第一安全等级高于所述第二安全等级，所述第一样本数量门限大于所述第二样本数量门限，所述第一模板数量门限大于所所述第二模板数量门限。
在一种可能的实现方式中，所述第一样本数量门限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，所述第二样本数量门限是根据单个手指能够按压到的指纹传感器的数量确定的。
在一种可能的实现方式中，所述第一模板数量门限大于等于2，所述第二模板数量门限为1。
在一种可能的实现方式中，所述处理单元还用于：
根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹传感器与指纹模板的对应关系。
在一种可能的实现方式中，所述处理单元具体用于：
若所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，确定指纹认证成功。
在一种可能的实现方式中，在所述第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自所述第一指纹传感器，所述第二指纹信息来自所述第二指纹传感器；
所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，包括：
若所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功，则所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系。
在一种可能的实现方式中，所述处理单元具体用于：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系，确定所述指纹认证结果。
在一种可能的实现方式中，所述处理单元还用于：
根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
在一种可能的实现方式中，在所述第三对应关系中，第一安全等级对应特定指纹模板，第二安全等级对应任意指纹模板，所述第一安全等级高于所述第二安全等级。
在一种可能的实现方式中，所述特定指纹模板为右手食指和/或左手中指对应的指纹模板。
在一种可能的实现方式中，所述处理单元具体用于：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果。
在一种可能的实现方式中，所述多个指纹传感器还用于：在用户进行指纹注册时，采集所述用户的多个指纹信息；
所述处理单元还用于：根据所述多个指纹传感器采集的所述用户的指纹信息，确定注册的所述指纹模板。
在一种可能的实现方式中，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。
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认证系统。
第五方面，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。
第六方面，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令时，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指纹认证的方法。
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。
基于上述技术方案，本申请实施例的指纹认证方案，可以将多个指纹传感器采集的多个指纹信息与注册的指纹模板依次进行匹配，确定该多个指纹信息中匹配成功的目标指纹信息和与该目标指纹信息匹配成功的目标指纹模板，进一步地，可以根据该目标指纹信息或该目标指纹模板，确定指纹认证结果，有利于兼顾用户体验和指纹识别的安全性。
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屏下指纹认证方法的示意性流程图
图3是指纹传感器和指纹模板的对应关系的示意图。
图4是根据本申请另一实施例的屏下指纹认证方法的示意性流程图。
图5是根据本申请再一实施例的屏下指纹认证方法的示意性流程图。
图6是根据本申请实施例的屏下指纹认证系统的示意性结构图。
图7是根据本申请实施例的电子设备的示意性结构图。
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。
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。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-Emitting Diode，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接受所述电子设备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。
应理解，在本申请实施例中，该光学指纹装置中的感应阵列也可以称为图像传感器(Sensor)，或光电传感器，经半导体工艺加工处理可以制作成一个DIE，即DIE包括图像传感器。
还应理解，本申请实施例中的光学指纹装置也可以称为光学指纹识别模组、指纹装置、指纹识别装置、指纹识别模组、指纹模组、指纹采集装置等。
图2是根据本申请实施例的基于多传感器的指纹采集的方法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认证系统，如图2所示，该方法200包括：
S210，获取多个指纹传感器采集的用户的多个指纹信息，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认证系统的指纹采集区域；
S220，将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；
S230，根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果。
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，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认证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上方。
可选地，在本申请实施例中，该多个指纹信息可以为单个手指的指纹信息，或者也可以是多个手指的指纹信息，该至少一个指纹模板中的指纹模板可以是一个手指的指纹模板，或者也可以是多个手指的指纹模板，本申请实施例对此不作限定。
可选地，在本申请实施例中，该多个指纹信息可以与该多个指纹传感器 111一一对应，即该多个指纹信息可以包括该多个指纹传感器中的每个指纹传感器采集的指纹信息，或者该多个指纹信息也可以只包括该多个指纹传感器中的部分指纹传感器采集的指纹信息，例如，该多个指纹信息可以只包括该多个指纹传感器中被有效按压的指纹传感器采集的指纹信息，本申请实施例对此不作限定。
可选地，在一些实施例中，该屏下指纹认证系统可以设置于指纹模组中，或者该指纹认证系统可以为该指纹模组，或者，该指纹认证系统可以包括该指纹模组。
可选地，在另一些实施例中，该屏下指纹认证系统也可以设置在电子设备中，或者，该指纹认证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可以由屏下指纹认证系统中的处理单元执行，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，以指纹认证系统为执行主体来描述本申请实施例的指纹采集方法。
具体而言，在进行指纹认证(或称指纹识别，指纹匹配)时，用户可以按压该多个指纹传感器(具体为该用户按压该多个指纹传感器上方的显示屏)，该多个指纹传感器可以采集用户的指纹信息，将一个指纹传感器采集的该用户的指纹信息记为一个指纹信息或一个指纹样本，该指纹认证系统可以获取该多个指纹传感器采集的多个指纹信息，然后可以将该多个指纹信息与注册的至少一个指纹模板依次进行指纹匹配，确定该多个指纹信息中与该至少一个指纹模板匹配成功的目标指纹信息，其中，该目标指纹信息可以包括一个或多个指纹信息，或者该指纹认证系统也可以确定与该目标指纹信息匹配成功的目标指纹模板，该目标指纹模板可以包括一个或多个指纹模板，从而该指纹认证系统可以根据该目标指纹信息或该目标指纹模板，确定指纹认证是否成功。
例如，可以在目标指纹信息的数量大于特定样本数量门限时，确定指纹认证成功，或者在目标指纹模板的数量大于特定模板数量门限时，确定指纹认证成功，或者在该目标指纹信息的数量和该目标指纹模板的数量都大于某个特定数量门限时，确定指纹认证成功。
可选地，在本申请实施例中，在将该多个指纹信息和该至少一个指纹模板进行指纹匹配的过程中，若匹配成功的目标指纹信息的数量大于该特定样本数量门限，或该目标指纹模板的数量大于该特定模板数量门限时，可以停止进行后续的指纹匹配，直接确定指纹认证成功，能够缩短指纹匹配时间，提升用户体验。
可选地，在一些实施例中，所述方法200还包括：
根据触发指纹认证的操作的安全等级和第一对应关系，确定该特定样本数量门限和/或该特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
应理解，在本申请实施例中，触发指纹认证的操作可以是终端的熄屏解锁操作，或者也可以是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，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操作为中安全等级。进一步地，可以为不同的安全等级配置不同的样本数量门限或模板数量门限，即确定该第一对应关系，这里，每个安全等级对应的样本数量门限可以理解为此安全等级下需要匹配成功的指纹样本的数量的最小值，每个安全等级对应的模板数量门限可以理解为此安全等级下需要匹配成功的指纹模板的数量的最小值。
可选地，在本申请实施例中，可以为低安全等级配置较低的样本数量门限或模板数量门限，为高安全等级配置较高的样本数量门限或模板数量门限，这样，对于低安全等级(例如，熄屏解锁操作)的操作触发的指纹认证，可以在较少数量的指纹样本匹配成功的情况下，确定指纹认证成功，能够提升用户体验；对于高安全等级(例如，支付类操作)的操作触发的指纹认证，可以在较多数量的指纹样本匹配成功的情况下，确定指纹认证成功，能够提升指纹识别的安全性。
应理解，在本申请实施例中，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样本数量门限或模板数量门限。
例如，可以设置三种安全等级，低安全等级、中安全等级和高安全等级，解锁操作对应低安全等级，非支付类的应用程序的访问操作对应中安全等级，支付类的操作对应高安全等级，低安全等级对应的样本数量门限为1，中安全等级对应的样本数量门限为2，高安全等级对应的样本数量门限为3，则对于低安全等级的操作而言，需要匹配成功至少一个指纹样本才能确定指纹认证成功，对于中安全等级的操作而言，需要匹配成功至少两个指纹样本才能确定指纹认证成功，而对于高安全等级的操作而言，需要匹配成功至少三个指纹样本才能确定指纹认证成功。
在一些可选的实现方式中，低安全等级对应的样本数量门限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，高安全等级对应的样本数量门限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，可以在单个手指的指纹信息匹配成功的情况下，确定指纹认证成功，能够提升用户体验；对于高安全等级的操作而言，可以在至少两个手指的指纹信息匹配成功的情况下，确定指纹认证成功，能够提升指纹识别的安全性。因此，根据具体的应用场景，确定指纹认证策略，有利于实现兼顾用户体验和指纹识别的安全性，提升指纹识别的整体性能。
可选地，在一些实施例中，高安全等级对应的模板数量门限可以大于等于2，低安全等级对应的第一模板数量门限可以为1，即对于高安全等级的指纹认证，需要匹配成功至少两个手指的指纹模板才能确定指纹认证成功，对于低安全等级的指纹认证，匹配成功一个手指的指纹模板即可确定指纹认证成功，有利于实现兼顾用户体验和指纹识别的安全性，提升指纹识别的整体性能。
可选地，在一些实施例中，S230还可以包括：
根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹传感器与指纹模板的对应关系。
具体地，在本申请实施例中，指纹传感器和指纹模板可以具有对应关系，该指纹认证系统也可以根据该目标指纹信息对应的目标指纹传感器和与该目标指纹信息匹配成功的目标指纹模板是否满足对应关系，确定指纹认证结果。例如，该指纹认证系统可以在该指纹传感器和该目标指纹模板满足所述 第二对应关系时，确定指纹认证成功，否则，确定指纹认证失败。
可选地，该指纹认证系统可以在每个目标指纹传感器和与目标指纹信息匹配成功的目标指纹模板都满足该第二关系时确定指纹认证成功，或者也可以在至少一个目标指纹传感器和目标指纹模板满足第二对应关系时，确定指纹认证成功，本申请实施例并不特别限定需要满足第二对应关系的指纹传感器和指纹模板的个数。
可选地，在一些实施例中，该指纹认证系统也可以根据触发指纹认证的操作的安全等级，确定需要满足第二对应关系的指纹传感器和指纹模板的个数，例如，该指纹认证系统可以设置低安全等级需要满足第二对应关系的指纹传感器的个数较少，高安全等级需要满足该第二对应关系的指纹传感器的个数较多，从而能够兼顾指纹识别的速度和安全性。
例如，在该第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自第一指纹传感器，所述第二指纹信息来自第二指纹传感器。可选地，该指纹认证系统可以在所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功的情况下，确定指纹认证成功，否则可以确定指纹认证失败。
可选地，在本申请实施例中，可以基于用户的按压习惯，设置指纹传感器和指纹模板的对应关系，在一具体实施例中，可以设置多个指纹传感器中靠左的一个或多个指纹传感器对应食指的指纹模板，设置中间的一个或多个指纹传感器对应中指的指纹模板，靠右的一个或多个指纹传感器对应无名指的指纹模板。例如，如图3所示，该多个指纹传感器包括指纹传感器S1～S6，作为示例而非限定，可以设置指纹传感器S1和S4对应食指的指纹模板，指纹传感器S2和S5对应中指的指纹模板，指纹传感器S3和S6对应无名指的指纹模板。若匹配成功的指纹样本来自指纹传感器S1和S2，匹配成功的指纹模板分别为食指和中指的指纹模板，则可以确定满足该第二对应关系，进而可以确定指纹认证成功。因此，本申请实施例通过设置指纹传感器和指纹模板的对应关系，进一步结合该对应关系进行指纹认证，能够进一步提升指纹识别的安全性。
可选地，在一些实施例中，所述根据所述目标指纹信息对应的指纹传感 器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，包括：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系，确定所述指纹认证结果。
即，该指纹认证系统可以在确定所述目标指纹信息的数量和所述目标指纹模板的数量满足一定条件的情况下，再确定目标指纹信息对应的目标指纹传感器和目标指纹模板是否满足第二对应关系，进一步地，在满足第二对应关系时，确定指纹认证成功，否则确定指纹认证失败，进一步提升了指纹识别的安全性。
可选地，在一些实施例中，所述S230还可以包括：
根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
具体地，在本申请实施例中，安全等级也可以和指纹模板具有对应关系，从而，该指纹认证系统也可以根据触发指纹认证的操作的安全等级和该目标指纹模板是否满足第三对应关系，确定指纹认证结果。例如，该指纹认证系统可以在该安全等级和该目标指纹模板满足第三对应关系时，确定指纹认证成功，否则，确定指纹认证失败。
例如，在该第三对应关系中，低安全等级对应任意指纹模板，高安全等级对应特定指纹模板，则，在低安全等级下，该指纹认证系统可以在匹配成功任意指纹模板的情况下，确定指纹认证成功，否则确定指纹认证失败；或者在高安全等级下，该指纹认证系统只在匹配成功特定的指纹模板的情况下，才确定指纹认证成功，否则确定指纹认证失败。
可选地，在本申请实施例中，可以基于用户的按压习惯，设置高安全等级对应的特定指纹模板，例如，可以设置该高安全等级对应的特定指纹模板为右手食指和/或左手中指的指纹模板。
可选地，在一些实施例中，所述根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，包括：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目 标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足所述第三对应关系，确定所述指纹认证结果。
即，该指纹认证系统可以在确定所述目标指纹信息的数量和所述目标指纹模板的数量满足一定条件的情况下，再确定触发进行指纹认证的当前操作的安全等级和该目标指纹模板是否满足第三对应关系，进一步地，在满足第三对应关系时，确定指纹认证成功，否则确定指纹认证失败，进一步提升了指纹识别的安全性。
应理解，在本申请实施例中，该第二对应关系和该第三对应关系可以是系统设置的，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设置该第二对应关系和该第三对应关系。
可选地，在一些实施例中，所述方法还包括：
在用户进行指纹注册时，通过该多个指纹传感器采集所述用户的多个指纹信息；
根据所述多个指纹传感器采集的所述用户的指纹信息，确定注册的所述指纹模板。
具体而言，在指纹注册时，用户可以按压多个指纹传感器，该多个指纹传感器可以采集用户的指纹信息，假设有K个指纹传感器，则可以采集K个指纹信息，进一步地，该指纹认证系统可以根据该K个指纹信息，确定指纹模板，例如，可以将该K个指纹信息确定为一个指纹模板；或者，也可以根据该K个指纹信息，确定被按压的指纹传感器，进而可以将被按压的指纹传感器采集的指纹信息确定为一个指纹模板；或者，若该K个指纹信息是多个手指的指纹信息，也可以将该多个指纹信息进行划分，将其注册为多个指纹模板，本申请实施例对此不作限定。
可选地，在一些实施例中，该指纹认证系统可以根据该多个指纹信息确定每个指纹传感器上的按压区域，进一步地，根据每个指纹传感器上的按压区域，确定多个指纹传感器中的被有效按压的指纹传感器。
例如，该指纹认证系统比较每个指纹信息中每个像素点的采样值的大小，根据所述每个像素点的采样值的大小，确定每个指纹传感器上的按压区域，例如，可以将采样值大于第一采样阈值的像素点组成的区域确定为该每 个指纹传感器上的按压区域。进一步地，可以根据该每个指纹传感器上的按压区域的大小，确定被按压的指纹传感器。例如，可以确定按压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％)的指纹传感器被按压，或者也可以确定面积最大的L个按压区域对应的L个指纹传感器为被有效按压的指纹传感器。
以下，结合图4和图5，分别以根据目标指纹样本的数量和目标指纹模板的数量进行指纹认证为例，说明本申请实施例的屏下指纹认证方法。
应理解，目标指纹样本需要满足的样本数量门限和模板数量门限，可以根据前述实施例所述的方法确定，这里不再赘述，将样本数量门限记为P，模板数量门限记为Q。
如图4所示，该指纹认证的方法可以包括如下步骤：
S41，将匹配成功的指纹样本个数i清零，即i＝0；
S42，从多个指纹样本中选择一个未匹配过的指纹样本；
S43，判断注册的指纹模板中是否有未与该指纹样本匹配过的指纹模板；
若是，执行S44，否则，执行S47；
在S44中，选择一个未与该指纹样本匹配的指纹模板进行指纹匹配；
S45，判断是否匹配成功；
若匹配成功，执行S46，否则执行S43；
在S46中，将匹配成功指纹样本的数量加1，即i＝i+1；
进一步地，在S47中，确定所有的指纹样本是否匹配完成，即所有的指纹样本是否与所有的指纹模板都一一匹配过；
若是，则执行S48，否则执行S42；
在S48中，确定匹配成功的指纹样本的数量是否大于或等于样本数量门限P，若是确定指纹认证成功，否则，确定指纹认证失败。
应理解，在该S46中，可以判断该样本数量i是否大于或等于P，若大于或等于P，可以直接确定指纹认证成功，而不必执行之后的匹配过程。
如图5所示，该指纹认证的方法可以包括如下步骤：
S51，将匹配成功的指纹模板个数清零；
S52，从多个指纹样本中选择一个未匹配过的指纹样本；
S53，判断注册的指纹模板中是否有未与该指纹样本匹配过的指纹模板；
若是，执行S54，否则，执行S57；
在S54中，选择一个未与该指纹样本匹配过的指纹模板进行指纹匹配；
S55，判断是否匹配成功；
若匹配成功，执行S56，否则执行S53；
在S56中，记录匹配成功的指纹模板的编号；
进一步地，S57中，确定所有的指纹样本是否匹配完成，即所有的指纹样本是否与所有的指纹模板都一一匹配过；
若是，则执行S58，否则执行S52；
在S58中，确定匹配成功的指纹模板的数量是否大于模板数量门限Q，若是确定指纹认证成功，否则，确定指纹认证失败。
应理解，在该S56中，可以判断该匹配成功的指纹模板数量是否大于或等于Q，若大于或等于Q，可以直接确定指纹认证成功，而不必执行之后的匹配过程。
上文结合图2至图5，详细描述了本申请的方法实施例，下文结合图6至图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方法实施例。
图6是根据本申请实施例的屏下指纹认证系统的示意性框图，如图6所示，该屏下指纹认证系统10包括：
处理单元11，用于获取多个指纹传感器采集的用户的多个指纹信息；将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；并根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，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认证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11具体用于：
根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果。
可选地，在一些实施例中，所述处理单元11具体用于：
若所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限，确定指纹认证成功。
可选地，在一些实施例中，所述处理单元11还用于：
根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/ 或所述特定模板数量门限。
可选地，在一些实施例中，所述处理单元11具体用于：
根据所述操作的安全等级和第一对应关系，确定所述特定样本数量门限和/或所述特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
可选地，在一些实施例中，在所述第一对应关系中，第一安全等级对应第一样本数量门限和第一模板数量门限，第二安全等级对应第二样本数量门限和第二模板数量门限，所述第一安全等级高于所述第二安全等级，所述第一样本数量门限大于所述第二样本数量门限，所述第一模板数量门限大于所所述第二模板数量门限。
可选地，在一些实施例中，所述第一样本数量门限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，所述第二样本数量门限是根据单个手指能够按压到的指纹传感器的数量确定的。
可选地，在一些实施例中，所述第一模板数量门限大于等于2，所述第二模板数量门限为1。
可选地，在一些实施例中，所述处理单元11还用于：
根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹传感器与指纹模板的对应关系。
可选地，在一些实施例中，所述处理单元11具体用于：
若所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，确定指纹认证成功。
可选地，在一些实施例中，在所述第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自所述第一指纹传感器，所述第二指纹信息来自所述第二指纹传感器；
所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，包括：
若所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功，则所述目标指纹信息对应的指纹传感器 和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系。
可选地，在一些实施例中，所述处理单元11具体用于：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系，确定所述指纹认证结果。
可选地，在一些实施例中，所述处理单元11还用于：
根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
可选地，在一些实施例中，在所述第三对应关系中，第一安全等级对应特定指纹模板，第二安全等级对应任意指纹模板，所述第一安全等级高于所述第二安全等级。
可选地，在一些实施例中，所述特定指纹模板为右手食指和/或左手中指对应的指纹模板。
可选地，在一些实施例中，所述处理单元11具体用于：
在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果。
可选地，在一些实施例中，所述多个指纹传感器还用于：在用户进行指纹注册时，采集所述用户的多个指纹信息；
所述处理单元11还用于：根据所述多个指纹传感器采集的所述用户的指纹信息，确定注册的所述指纹模板。
可选地，在一些实施例中，所述处理单元11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。
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，该多个指纹传感器的数量、尺寸和排布情况等参数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(Field Programmable 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至图5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至图5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至图5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 (36)

  1. 一种基于多传感器的屏下指纹认证方法，其特征在于，应用于包括多个指纹传感器的屏下指纹认证系统，所述方法包括：
    获取多个指纹传感器采集的用户的多个指纹信息，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认证系统的指纹采集区域；
    将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；
    根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：
    根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果，包括：
    若所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限，确定指纹认证成功。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限。
  5. 根据权利要求4所述的方法，其特征在于，所述根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限，包括：
    根据所述操作的安全等级和第一对应关系，确定所述特定样本数量门限和/或所述特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
  6. 根据权利要求5所述的方法，其特征在于，在所述第一对应关系中，第一安全等级对应第一样本数量门限和第一模板数量门限，第二安全等级对应第二样本数量门限和第二模板数量门限，所述第一安全等级高于所述第二安全等级，所述第一样本数量门限大于所述第二样本数量门限，所述第一模板数量门限大于所所述第二模板数量门限。
  7. 根据权利要求6所述的方法，其特征在于，所述第一样本数量门限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，所述第二样本数量门限是根据单个手指能够按压到的指纹传感器的数量确定的。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一模板数量门限大于等于2，所述第二模板数量门限为1。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：
    根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹传感器与指纹模板的对应关系。
  10. 根据权利要求9所述的方法，其特征在于，所述根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，包括：
    若所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，确定指纹认证成功。
  11. 根据权利要求10所述的方法，其特征在于，在所述第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自第一指纹传感器，所述第二指纹信息来自第二指纹传感器；
    所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，包括：
    若所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功，则所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系。
  12. 根据权利要求9至11中任一项所述的方法，其特征在于，所述根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，包括：
    在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系， 确定所述指纹认证结果。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，包括：
    根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
  14. 根据权利要求13所述的方法，其特征在于，在所述第三对应关系中，第一安全等级对应特定指纹模板，第二安全等级对应任意指纹模板，所述第一安全等级高于所述第二安全等级。
  15. 根据权利要求14所述的方法，其特征在于，所述特定指纹模板为右手食指和/或左手中指对应的指纹模板。
  16. 根据权利要求13至15中任一项所述的方法，其特征在于，所述根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，包括：
    在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果。
  17. 根据权利要求1至16中任一项所述的方法，其特征在于，所述方法还包括：
    在用户进行指纹注册时，获取所述多个指纹传感器采集的所述用户的多个指纹信息；
    根据所述多个指纹传感器采集的所述用户的指纹信息，确定注册的所述指纹模板。
  18. 一种基于多传感器的屏下指纹认证系统，其特征在于，包括：
    处理单元，用于获取多个指纹传感器采集的用户的多个指纹信息；将所述多个指纹信息和注册的至少一个指纹模板依次进行匹配，确定匹配成功的目标指纹信息和/或与所述目标指纹信息匹配的目标指纹模板；并根据所述目标指纹信息和/或所述目标指纹模板，确定指纹认证结果，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认证系统的指纹采集区域。
  19. 根据权利要求18所述的屏下指纹认证系统，其特征在于，所述处 理单元具体用于：
    根据所述目标指纹信息的数量和/或所述目标指纹模板的数量，确定所述指纹认证结果。
  20. 根据权利要求19所述的屏下指纹认证系统，其特征在于，所述处理单元具体用于：
    若所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限，确定指纹认证成功。
  21. 根据权利要求20所述的屏下指纹认证系统，其特征在于，所述处理单元还用于：
    根据触发指纹认证的操作的安全等级，确定所述特定样本数量门限和/或所述特定模板数量门限。
  22. 根据权利要求21所述的屏下指纹认证系统，其特征在于，所述处理单元具体用于：
    根据所述操作的安全等级和第一对应关系，确定所述特定样本数量门限和/或所述特定模板数量门限，所述第一对应关系为安全等级与样本数量门限和/或模板数量门限的对应关系。
  23. 根据权利要求22所述的屏下指纹认证系统，其特征在于，在所述第一对应关系中，第一安全等级对应第一样本数量门限和第一模板数量门限，第二安全等级对应第二样本数量门限和第二模板数量门限，所述第一安全等级高于所述第二安全等级，所述第一样本数量门限大于所述第二样本数量门限，所述第一模板数量门限大于所所述第二模板数量门限。
  24. 根据权利要求23所述的屏下指纹认证系统，其特征在于，所述第一样本数量门限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，所述第二样本数量门限是根据单个手指能够按压到的指纹传感器的数量确定的。
  25. 根据权利要求23或24所述的屏下指纹认证系统，其特征在于，所述第一模板数量门限大于等于2，所述第二模板数量门限为1。
  26. 根据权利要求18至25中任一项所述的屏下指纹认证系统，其特征在于，所述处理单元还用于：
    根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足第二对应关系，确定所述指纹认证结果，其中，所述第二对应关系为指纹 传感器与指纹模板的对应关系。
  27. 根据权利要求26所述的屏下指纹认证系统，其特征在于，所述处理单元具体用于：
    若所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，确定指纹认证成功。
  28. 根据权利要求27所述的屏下指纹认证系统，其特征在于，在所述第二对应关系中，第一指纹模板对应至少一个第一指纹传感器，第二指纹模板对应至少一个第二指纹传感器，所述目标指纹信息包括第一指纹信息和第二指纹信息，所述目标指纹模板包括第一指纹模板和第二指纹模板，其中，所述第一指纹信息来自所述第一指纹传感器，所述第二指纹信息来自所述第二指纹传感器；
    所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系，包括：
    若所述第一指纹信息与所述第一指纹模板匹配成功，和/或所述第二指纹信息与所述第二指纹模板匹配成功，则所述目标指纹信息对应的指纹传感器和与所述目标指纹信息匹配成功的指纹模板满足所述第二对应关系。
  29. 根据权利要求26至28中任一项所述的屏下指纹认证系统，其特征在于，所述处理单元具体用于：
    在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述目标指纹信息对应的指纹传感器和所述目标指纹模板是否满足所述第二对应关系，确定所述指纹认证结果。
  30. 根据权利要求18至29中任一项所述的屏下指纹认证系统，其特征在于，所述处理单元还用于：
    根据触发指纹认证的操作的安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果，其中，所述第三对应关系为安全等级与指纹模板的对应关系。
  31. 根据权利要求30所述的屏下指纹认证系统，其特征在于，在所述第三对应关系中，第一安全等级对应特定指纹模板，第二安全等级对应任意指纹模板，所述第一安全等级高于所述第二安全等级。
  32. 根据权利要求31所述的屏下指纹认证系统，其特征在于，所述特 定指纹模板为右手食指和/或左手中指对应的指纹模板。
  33. 根据权利要求30至32中任一项所述的屏下指纹认证系统，其特征在于，所述处理单元具体用于：
    在所述目标指纹信息的数量大于或等于特定样本数量门限，和/或所述目标指纹模板的数量大于或等于特定模板数量门限的情况下，根据所述安全等级和所述目标指纹模板是否满足第三对应关系，确定所述指纹认证结果。
  34. 根据权利要求18至33中任一项所述的屏下指纹认证系统，其特征在于，所述多个指纹传感器还用于：在用户进行指纹注册时，采集所述用户的多个指纹信息；
    所述处理单元还用于：根据所述多个指纹传感器采集的所述用户的指纹信息，确定注册的所述指纹模板。
  35. 根据权利要求18至34中任一项所述的屏下指纹认证系统，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。
  36. 一种电子设备，其特征在于，包括如权利要求18至35中任一项所述的屏下指纹认证系统。
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