WO2019232756A1

WO2019232756A1 - Method, device, and electronic device for fingerprint recognition

Info

Publication number: WO2019232756A1
Application number: PCT/CN2018/090308
Authority: WO
Inventors: 汤辉
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2018-06-07
Filing date: 2018-06-07
Publication date: 2019-12-12
Also published as: CN108713202A

Abstract

A method, a device, and an electronic device for fingerprint recognition are provided. The method comprises: determining a triggering threshold; if a pressing force value generated when a target user presses a part of a display screen in a fingerprint acquisition region is greater than or equal to the triggering threshold, acquiring target fingerprint data; and performing fingerprint registration or fingerprint recognition according to the target fingerprint data. The method for fingerprint recognition in an embodiment of the present application avoids acquiring fingerprint data on the basis of a fixed triggering threshold; instead, before target fingerprint data is acquired, a triggering threshold is determined first, and an acquisition operation of the target fingerprint data is then performed on the basis of the determined triggering threshold. Thus, the quality of target fingerprint data can be improved, and user experience can be effectively improved.

Description

Method, device and electronic equipment for fingerprint identification

Technical field

Embodiments of the present application relate to the field of fingerprint identification, and more particularly, to a method, device, and electronic device for fingerprint identification.

Background technique

Currently, under-screen fingerprint recognition technology is in the ascendant. Under-screen fingerprint recognition technology collects fingerprint data by pressing the display screen of the fingerprint collection area, and then processes the fingerprint data for fingerprint registration and fingerprint recognition. However, when the user taps the display screen, the quality of the fingerprint data obtained through the above technical solution is likely to be very poor and cannot meet the requirements for fingerprint registration or fingerprint recognition.

In order to solve the above technical problems, in the prior art, the problem of poor data caused by a user's light tap is solved by increasing the user's pressing pressure. Specifically, a trigger threshold is introduced, that is, whether to trigger the collection operation of fingerprint data is controlled by the trigger threshold. More specifically, the user generates a pressure value by pressing the display screen of the fingerprint collection area. When the pressure value is greater than or equal to the trigger threshold, the fingerprint data collection operation is triggered. On the contrary, when the pressure value is less than the trigger threshold, the fingerprint data is not triggered Collection operation. The trigger threshold is a threshold configured in advance for a device for fingerprint identification. That is, when fingerprint registration or fingerprint recognition is performed by different users, whether or not the fingerprint data collection operation is triggered is controlled by the same trigger threshold.

However, because different users have different fingerprint patterns, different users have different requirements on the trigger threshold. If the same trigger threshold is used to control whether to trigger fingerprint data collection for different users, the user experience is likely to be poor.

For example, for users with deeper fingerprints, the pre-configured triggering threshold is likely to be too large, which makes it difficult to collect fingerprint data, thereby reducing the user experience.

For another example, for users with lighter fingerprints, the pre-configured trigger threshold is likely to be too small, which may cause the quality of the collected fingerprint data to be too poor. Multiple fingerprint data collections are required, reducing fingerprint recognition or fingerprint registration Operating efficiency, which in turn reduces the user experience.

Summary of the Invention

Provided are a method, an apparatus, and an electronic device for fingerprint recognition. The method, the apparatus, and the electronic device for fingerprint recognition can improve a user experience by adjusting a trigger threshold for triggering a collection operation of fingerprint data.

In a first aspect, a method for fingerprint identification is provided, including:

Determine the trigger threshold;

Collecting target fingerprint data when the pressure value generated by the target user pressing the display screen in the fingerprint collection area is greater than or equal to the trigger threshold;

Perform fingerprint registration or fingerprint recognition according to the target fingerprint data.

The method for fingerprint recognition in the embodiment of the present application avoids collecting fingerprint data based on a fixed trigger threshold, but determines a trigger threshold before collecting target fingerprint data, and performs target fingerprint data based on the determined trigger threshold. The collection operation can not only improve the quality of the target fingerprint data, but also effectively improve the user experience.

In some possible implementation manners, the determining the trigger threshold includes:

Obtaining a first threshold;

Collecting the first fingerprint data when the pressure value is greater than or equal to the first threshold;

Determining the trigger threshold according to the quality of the first fingerprint data and the first threshold.

In some possible implementation manners, the determining the trigger threshold according to the quality of the first fingerprint data and the first threshold includes:

When the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is increased to a second threshold, wherein the second fingerprint data collected based on the second threshold is the first time that fingerprint registration is satisfied. Or fingerprint data required for the quality of fingerprint recognition;

Determining the second threshold as the trigger threshold.

When the quality of the first fingerprint data meets the quality requirements of fingerprint registration or fingerprint recognition, the first threshold is reduced to a third threshold, wherein the third fingerprint data collected based on the third threshold is the first time that the fingerprint is not satisfied. Fingerprint data required for registration or fingerprint identification;

The threshold value before and recently used to collect the third fingerprint data is determined as the trigger threshold value.

In some possible implementation manners, the first threshold value is a pre-configured threshold value, or the first threshold value is a pressure value generated when the target user presses the display screen for the first time during fingerprint registration.

Determining the trigger threshold specific to the target user.

Determining multiple thresholds corresponding to multiple temperature ranges;

Determine the target temperature;

A threshold corresponding to a temperature range to which the target temperature belongs is determined as the trigger threshold.

In some possible implementation manners, the determining the target temperature includes:

The target temperature is determined by a temperature sensor.

In some possible implementation manners, the performing fingerprint registration or fingerprint recognition according to the target fingerprint data includes:

Increasing the trigger threshold when the quality of the target fingerprint data does not meet the quality requirements for fingerprint fingerprint recognition;

Re-collecting fingerprint data based on the increased trigger threshold;

Fingerprint registration or fingerprint recognition based on the re-acquired fingerprint data.

In some possible implementation manners, the method further includes:

The target fingerprint data is displayed through a display interface, and the target fingerprint data displayed on the display interface is used to prompt a user to adjust the degree of pressing force pressed on the display screen.

In a second aspect, a device for fingerprint identification is provided, including:

In some possible implementation manners, the apparatus includes:

A functional module or unit for executing the method in the first aspect or the method in any one of the foregoing possible implementation manners.

In a third aspect, an electronic device is provided, including:

In some possible implementation manners, the electronic device includes:

A functional module or unit for executing the method in the first aspect or the method in any one of the foregoing possible implementation manners, or the device for fingerprint identification in the second aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic plan view of a mobile terminal to which embodiments of the present application can be applied.

FIG. 2 is a partial cross-sectional view of the mobile terminal shown in FIG. 1 along A-A.

FIG. 3 is a schematic flowchart of a method for fingerprint recognition according to an embodiment of the present application.

FIG. 4 is a schematic block diagram of a principle of a capacitive pressure sensor according to an embodiment of the present application.

FIG. 5 is a schematic block diagram of a principle of a resistive pressure sensor according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a bridge-type resistance pressure sensor according to an embodiment of the present application.

FIG. 7 is a schematic flowchart of a method for fingerprint recognition according to an embodiment of the present application.

FIG. 8 is another schematic flowchart of a method for fingerprint recognition according to an embodiment of the present application.

FIG. 9 is another schematic flowchart of a method for fingerprint recognition according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of an apparatus for fingerprint recognition according to an embodiment of the present application.

FIG. 11 is another schematic block diagram of an apparatus for fingerprint recognition according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of an electronic device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

As the smart terminal enters the era of full screen, the space of the fingerprint keys on the front of the smart terminal is squeezed by the full screen, so the under-display or under-screen fingerprint recognition technology is receiving more and more attention. The so-called Under-display fingerprint recognition device refers to a fingerprint recognition module for fingerprint recognition is installed below the display screen, thereby implementing fingerprint registration or fingerprint recognition operations inside the display area of the display screen.

Optionally, the fingerprint identification module is a module for completing fingerprint collection and fingerprint identification. The fingerprint identification module can be composed of a fingerprint collection module, a fingerprint identification module, and an extended function module (such as a lock or an application driver module). Among them, the fingerprint collection module includes, but is not limited to, optical, pressure-sensitive, capacitive, inductive, thermal, and ultrasonic. In other words, the fingerprint recognition module can be used for optical fingerprint recognition, ultrasonic fingerprint recognition, or other types of fingerprint recognition.

Optionally, the under-display fingerprint recognition device provided in the embodiment of the present application can be applied to any terminal device configured with a display screen and a fingerprint recognition module. For example, smart mobile phones, tablet computers, and other small personal portable devices, such as personal digital assistants (PDAs), electronic books (e-books), and the like.

Optionally, in the above-mentioned terminal device, the fingerprint recognition module may be disposed below the display screen, which can detect and recognize the user's fingerprint when the user operates through the display screen.

In order to facilitate understanding, as an example and not by way of limitation, the terminal device is a smart phone, and the fingerprint recognition module is used for optical fingerprint recognition as an application scenario. Be explained.

Please refer to FIG. 1 and FIG. 2, wherein FIG. 1 is a schematic front view of a terminal device 100 to which an under-screen fingerprint recognition device can be applied, and FIG. 2 is a schematic cross-sectional structure view of the terminal device 100 along A-A shown in FIG. 1. The terminal device 100 may be a smart phone, which includes 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.

Optionally, the display screen 120 may be a self-luminous display screen. For example, the display screen 120 may be an organic light-emitting diode (OLED) display or a micro-LED display; in other alternative embodiments, the display 120 may also be a liquid crystal display. (Liquid Crystal Display, LCD) or other passive light-emitting display, this application does not limit this.

Further, the display screen 120 may also be a touch display screen, which can not only perform screen display, but also detect a user's touch or press operation, thereby providing a user with a human-computer interaction interface. For example, in one embodiment, the terminal device 100 may include a touch sensor. The touch sensor may be a touch panel (TP), which may be disposed on the surface of the display screen 120, or may be partially integrated or integrated. Integrated into the display 120 to form a touch display.

Optionally, the fingerprint recognition module 140 may be specifically a fingerprint recognition module for optical fingerprint recognition, which is mainly used to collect user fingerprint data information. In this embodiment, the fingerprint recognition module 140 may be at least A partial area is disposed below the display screen 120, so that the fingerprint collection area (or sensing area) 130 of the fingerprint identification module 140 is at least partially located in the display area 102 of the display screen 120.

Optionally, the fingerprint recognition module 140 may specifically include an optical fingerprint sensor having an optical sensing array, such as an optical fingerprint sensor; the optical sensing array includes a plurality of optical sensing units, and the area where the optical sensing array is located is the fingerprint recognition The fingerprint collection area 130 of the module 140. As shown in FIG. 1, the fingerprint collection area 130 is located in the display area 102 of the display screen 120. Therefore, when the user needs to unlock the terminal device or perform other fingerprint verification, he only needs to press his finger on the display area. The fingerprint collection area 130 of the screen 120 can implement the fingerprint data collection operation.

Taking a scenario where a user needs to perform fingerprint verification as an example, when a finger touches, presses, or approaches (for ease of description, this application is collectively referred to as pressing) in the fingerprint collection area 130, the light emitted by the display unit of the fingerprint collection area 130 is on the finger Reflected and formed reflected light, where the reflected light can carry fingerprint information of a user's finger. For example, after the light is reflected on the fingerprint on the surface of the user's finger, the reflected light corresponding to the ridges and valleys of the finger fingerprint is different, so the reflected light can carry the user's fingerprint information. The reflected light is returned to the display screen 120 and received by the photodetector array of the fingerprint recognition module 140 below it and converted into a corresponding electrical signal, that is, a fingerprint detection signal. The terminal 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 or she has the authority to perform corresponding operations on the terminal device 100.

Since fingerprint collection detection can be implemented inside the display area 102 of the display screen 120, the terminal 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 terminal device 100.

It should be understood that although the fingerprint recognition module is taken as an in-screen fingerprint recognition module in the embodiments shown in FIG. 1 and FIG. 2 as an example, in other embodiments, the fingerprint recognition module of the terminal device 100 may also be used. When an ultrasonic or other type of fingerprint recognition module is used in a fingerprint recognition scene, correspondingly, the optical fingerprint sensor may be replaced by an ultrasonic fingerprint sensor or another type of fingerprint sensor. The application does not specifically limit the type and specific structure of the fingerprint sensor, as long as the above-mentioned fingerprint sensor can meet the performance requirements for fingerprint recognition inside the display screen of the terminal device.

This embodiment uses an OLED display as an example for the display 120. The display 120 has an array of OLED display units arranged in an array. The fingerprint recognition module 140 can use the OLED display 120 in the fingerprint collection area. The 130 OLED display unit (ie, the OLED light source) is used as the excitation light source for fingerprint detection and identification.

Of course, it should be understood that in other alternative implementations, the fingerprint recognition 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. In this case, the Under-display fingerprint The identification device can be applied not only to a self-luminous display such as an OLED display, but also to a non-self-luminous display, such as a liquid crystal display or other passive light-emitting displays. In addition, the optical sensing array of the fingerprint identification module 140 is specifically a photodetector array, which includes a plurality of photodetectors distributed in an array. The photodetector can be used as the optical sensing unit described above.

In other alternative embodiments, the fingerprint recognition module 140 may also be disposed in the entire area below the display screen 120, thereby extending the fingerprint collection area 130 to the entire display area 102 of the display screen 120 to achieve full-screen fingerprint recognition. .

It should also be understood that, in specific implementation, the terminal device 100 may further include a protective cover 110, which may be specifically a transparent cover, such as a glass cover or a sapphire cover, which is located above the display screen 120 The front surface of the terminal device 100 is covered, 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.

Further, a circuit board 150 such as a flexible printed circuit board (FPC) may be further provided below the fingerprint recognition module 140, and the fingerprint recognition module 140 may be soldered to the circuit board 150 through a pad, The circuit board 150 is used for electrical interconnection and signal transmission with other peripheral circuits or other components of the terminal device 100. For example, the fingerprint recognition module 140 can receive the control signal from the processing order of the terminal device 100 through the circuit board 150, and can also output the fingerprint detection signal to the processing unit of the terminal device 100 through the circuit board 150 or Control unit, etc.

It should be noted that in actual applications, when the user needs to unlock the terminal device 100 or perform other fingerprint verification, in order to ensure the quality of the fingerprint data obtained, a trigger threshold is required to control whether the fingerprint data is triggered. Acquisition operation. Specifically, the user generates a pressure value by pressing the display screen of the fingerprint collection area 130. When the pressure value is greater than or equal to the trigger threshold, the fingerprint data collection operation is triggered. Conversely, when the pressure value is less than the trigger threshold, the fingerprint data is not triggered. Collection operation.

This application proposes a method for fingerprint registration or fingerprint identification. Before collecting fingerprint data, a reasonable trigger threshold is determined, or the trigger threshold is dynamically adjusted in the process of collecting fingerprint data multiple times, and fingerprints are collected in this way. Data can not only improve the quality of fingerprint data collected, but also effectively improve the user experience.

FIG. 3 is a schematic flowchart of a fingerprint registration or fingerprint recognition method 200 of the present application. The method 200 may be executed by a fingerprint identification device, for example, the terminal device 100 shown in FIG. 1. The method 200 includes part or all of the following:

As shown in FIG. 3, the method 200 includes:

S210: Determine a trigger threshold.

S220. Collect target fingerprint data when the target user presses the display screen in the fingerprint collection area when the pressure value is greater than or equal to the trigger threshold.

S230. Perform fingerprint registration or fingerprint recognition according to the target fingerprint data.

The fingerprint recognition device in the embodiment of the present application avoids collecting fingerprint data based on a fixed trigger threshold, but determines a trigger threshold before collecting target fingerprint data, and performs target fingerprint data collection operations based on the determined trigger threshold. Not only can improve the quality of the target fingerprint data, but also can effectively improve the user experience.

It should be understood that the fingerprint data used in the embodiments of the present application and the appended claims is only for the purpose of describing specific embodiments, and is not intended to limit the embodiments of the present application. In other alternative embodiments, the fingerprint data in the embodiments of the present application may also be understood as fingerprint images or data obtained based on fingerprint image analysis.

Optionally, the fingerprint recognition device in this application may determine the pressure value generated by the target user pressing the display screen in the fingerprint collection area through the pressure sensor.

The pressure sensor includes, but is not limited to, a capacitive pressure sensor or a resistive pressure sensor.

Capacitive pressure sensors can also be called "pressure-capacitive" sensors. The principle is shown in Figure 4. When pressure is applied to the electrode plate 312, the pressure changes the distance between the capacitors 321 between the two

electrode plates

311 and 312 Thereby changing the magnitude of the capacitance. Different pressure values produce different capacitance value changes. The change in the capacitance value is converted into an electrical signal. The corresponding pressure can be detected by detecting the change in the signal by the detection chip.

A resistive pressure sensor can also be called a “piezoresistive” sensor. The principle is shown in FIG. 5. The resistive pressure sensor 422 is arranged on a force-bearing surface to be detected. The force-bearing body 413 is deformed by force. As a result, the resistive pressure sensor 422 is squeezed or stretched, so that its resistance value changes accordingly. Different pressure values produce different resistance value changes, and the corresponding strength can be detected through the detection chip to detect the resistance value change.

As shown in FIG. 6, the combination of four independent resistance pressure sensors into a bridge topology forms a bridge resistance pressure sensor, which can suppress temperature drift at the hardware level. Among them, IN + represents the positive input of the data signal, IN- represents the negative input of the data signal, and VDD represents the input voltage.

In practical applications, because a single pressure sensor is usually relatively small, in order to accurately sense the pressure from various positions on the touch display screen, it is usually necessary to place multiple pressure sensors in an array. These multiple pressure sensors form a pressure sensor array .

The following describes the implementation manner of determining the trigger threshold in the embodiments of the present application by way of example:

Optionally, the trigger threshold may also be a threshold determined by the fingerprint recognition device through adaptive learning.

Optionally, the fingerprint recognition device may determine a reasonable trigger threshold value by analyzing fingerprint data collected based on different threshold values.

Optionally, the fingerprint recognition device may first obtain a first threshold value; when the pressure value is greater than or equal to the first threshold value, the fingerprint recognition device collects first fingerprint data; and then according to the quality of the first fingerprint data and the first Threshold, which determines the trigger threshold.

In one embodiment, when the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is increased to a second threshold, wherein the second fingerprint data collected based on the second threshold is the first Fingerprint data that meets the quality requirements for fingerprint registration or fingerprint recognition; determine the second threshold as the trigger threshold.

In another embodiment, when the quality of the first fingerprint data meets the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is reduced to a third threshold, wherein the third fingerprint data collected based on the third threshold It is the fingerprint data that does not meet the quality requirements for fingerprint registration or fingerprint recognition for the first time; the threshold value before and recently used to collect the third fingerprint data is determined as the trigger threshold value.

Optionally, the first threshold is a pre-configured threshold.

Optionally, the first threshold value is a pressure value generated when the target user presses the display screen for the first time during fingerprint registration.

Optionally, the quality of the first fingerprint data may be represented by at least one of the following parameters:

Clarity, Saturated Signal-to-Noise Ratio (SSNR), and noise parameter requirements.

Taking the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, and the quality of the first fingerprint data is clarity, for example, in practical applications, the clarity of the first fingerprint data does not meet the requirements for When fingerprint definition or fingerprint identification is required, the first threshold is increased to the second threshold above.

Optionally, the fingerprint recognition device may further determine or adjust the trigger threshold according to a pressure value generated by a user's habitual operation.

Here, the user's habitual operation can be understood as the pressing pressure with which the user is accustomed to use when pressing the display screen (for example, for fingerprint registration or fingerprint recognition).

Take the fingerprint recognition device for adjusting the trigger threshold according to a pressure value generated by a user's habitual operation as an example. In one embodiment, for users with deeper fingerprints, if the pressure value generated by the user's habitual operation is greater than the trigger threshold, the trigger threshold can be increased, or even equal to the pressure value generated by the user's habitual operation, thereby increasing the user Experience.

Optionally, before the fingerprint recognition device determines or adjusts the trigger threshold according to the pressure value generated by the user's habitual operation, it is necessary to determine the pressure value generated by the user's habitual operation.

In one embodiment, when the user performs fingerprint registration, the pressure value generated when the user presses the display screen for the first time may be determined as the pressure value generated by the user's habitual operation.

In another embodiment, the fingerprint recognition device may determine the pressure value generated by the user's habitual operation by analyzing multiple pressure values generated by the user pressing the display screen during fingerprint unlocking or other fingerprint verification processes.

For example, the fingerprint recognition device may determine an average value of the plurality of pressure values as a pressure value generated by the user's habitual operation.

It should be understood that the method for fingerprint recognition in the embodiment of the present application is intended to avoid collecting fingerprint data based on a fixed trigger threshold, but to determine a trigger threshold before collecting target fingerprint data, and perform the determination based on the determined trigger threshold. For the operation of collecting target fingerprint data, the embodiment of the present application does not limit the specific implementation manner of determining the trigger threshold. In other alternative embodiments, the fingerprint identification device may store correspondences between a plurality of types of fingerprint data and a plurality of thresholds. The depths of the fingerprint lines of the plurality of fingerprint data are different from each other. The fingerprint identification device may By searching among the plurality of fingerprint data for fingerprint data that is similar to or the same as the depth of the fingerprint pattern of the target user, and determine the threshold corresponding to the fingerprint data that is similar to or the same as the depth of the fingerprint pattern of the target user as the Trigger threshold. Further, before determining the trigger threshold, the fingerprint recognition device needs to obtain the depth information of the fingerprint texture of the target user.

For example, for users with deeper fingerprints, a lower trigger threshold can be determined, so that the user can achieve fingerprint data collection by tapping the fingerprint collection area in the display screen, reducing the difficulty of collecting fingerprint data.

For another example, for a user with a lighter fingerprint, a larger trigger threshold can be determined, so that the user can start the fingerprint data collection operation by pressing with a greater force, which can reduce the number of times that fingerprint data that does not meet the quality requirements is collected. Therefore, the operation efficiency of fingerprint identification or fingerprint registration is effectively improved, and the user experience is improved.

Optionally, the method shown in FIG. 3 may further include:

The fingerprint identification device displays the target fingerprint data through a display interface, and the target fingerprint data displayed on this display interface is used to prompt a user to adjust the pressing pressure pressed on the display screen. In one embodiment, when the pressure value generated by the user pressing the display screen is less than or much greater than the trigger threshold, the fingerprint recognition device may display target fingerprint data through a font of a specific color to remind the user to use the fingerprint next time. During function, decrease or increase the pressing force of pressing the display.

Therefore, the target fingerprint data displayed on the display interface can not only guide the user to adjust the pressing pressure pressed on the display screen, so that the user presses the display screen force closer to the current threshold for triggering the fingerprint data. This design makes the fingerprint During the identification process, the user experience can be maximized.

The method for determining the triggering threshold in the present application is described in detail below with reference to FIG. 7 by taking the method of determining the triggering threshold by adding the first threshold to the second threshold as an example.

FIG. 7 is a schematic flowchart of a method 500 for determining the trigger threshold by adding the first threshold to the second threshold according to an embodiment of the present application. The method 500 may be executed by a fingerprint identification device, for example, the terminal device 100 shown in FIG. 1. The method 500 may also be executed by a device installed with an application for determining the trigger threshold. Optionally, the device is triggered to execute the method 500 in a scenario where a target user uses a fingerprint function (such as fingerprint registration) for the first time. The method 500 Including some or all of the following:

S510: The target user's finger presses the display screen to generate a pressure value.

S520. The fingerprint recognition device determines whether the pressure value is greater than or equal to a first threshold value. The first threshold value may be a pre-configured threshold value or a pressure value generated when the target user presses the display screen for the first time during fingerprint registration.

S531. When the fingerprint recognition device determines that the pressure value is less than the first threshold, the first fingerprint data is not collected, and the first fingerprint data is fingerprint data collected based on the first threshold.

S532. The fingerprint recognition device displays information for prompting the target user to increase the pressing pressure through the display screen.

S541. When the fingerprint recognition device determines that the pressure value is greater than or equal to the first threshold value, it collects the first fingerprint data.

S542. The fingerprint recognition device pre-analyzes the first fingerprint data. Specifically, the pre-analysis of the first fingerprint data can remove the background area and the useless area in the fingerprint image, and at the same time adopt a better filtering method based on the ridge line structure characteristics of the target area in the fingerprint image to improve the ridge line. Sharpness, smoothing burrs and holes at the edges of the ridgeline, suppressing image noise, ensuring reliable extraction of fingerprint features, and converting grayscale images into black-and-white binary images, resulting in a single-pixel-wide binary image with clear ridgeline structure For fingerprint registration or fingerprint identification.

S543. The fingerprint identification device determines whether the quality of the first fingerprint data meets the requirements of fingerprint identification or fingerprint registration by pre-analyzing the first fingerprint data.

S544. When the fingerprint recognition device pre-analyzes the first fingerprint data and determines that the quality of the first fingerprint data does not meet the requirements of fingerprint recognition or fingerprint registration, the first threshold is increased. Specifically, the first threshold may be increased according to a specific step size to form an increased threshold, and then step S520 is performed based on the increased threshold. To avoid repetition, the operation of collecting fingerprint data based on the increased threshold is not described in detail.

S545. When the fingerprint recognition device pre-analyzes the first fingerprint data and determines that the quality of the first fingerprint data meets the requirements of fingerprint recognition or fingerprint registration, determines the first threshold value as the trigger threshold value.

It should be understood that the method for fingerprint recognition in the embodiment of the present application is intended to avoid collecting fingerprint data based on a fixed trigger threshold, but to determine a trigger threshold before collecting target fingerprint data, and perform the determination based on the determined trigger threshold. The target fingerprint data collection operation does not specifically limit the application scenario of the fingerprint data in the embodiment of the present application. In other words, the method 200 shown in FIG. 3 may be used in a fingerprint registration scenario or a fingerprint recognition scenario (for example, a screen unlocking, application login, and identity verification scenarios). Specifically, in a scenario for fingerprint registration, the fingerprint recognition device may perform fingerprint registration based on the first threshold value until the fingerprint registration is successful and the trigger threshold value is determined. In the scenario for fingerprint recognition, the fingerprint recognition device can directly perform fingerprint recognition based on the trigger threshold, or can re-determine the trigger threshold, and then perform fingerprint recognition based on the re-determined trigger threshold.

Optionally, the fingerprint recognition device may save the trigger threshold after determining the trigger threshold.

Optionally, the fingerprint recognition device may determine the trigger threshold as a dedicated threshold for the target user.

In the embodiment of the present application, the fingerprint recognition device may fix the second threshold value above or the previously used and recently used threshold value of the third fingerprint data as the triggering threshold value, that is, the fingerprint recognition device is determining the After the trigger threshold, when the user subsequently needs to use the fingerprint function, the fingerprint recognition device directly uses the trigger threshold to determine whether the pressure value generated by the user pressing the display screen is sufficient to trigger the fingerprint data collection operation. This application is not limited to this.

For example, in one embodiment, when the quality of the target fingerprint data meets the quality requirements for fingerprint fingerprint recognition, the fingerprint recognition device may directly perform fingerprint registration or fingerprint recognition based on the target fingerprint data.

For another example, in another embodiment, the fingerprint recognition device may further dynamically adjust the trigger threshold according to the quality of the target fingerprint data.

Specifically, when the quality of the target fingerprint data does not meet the quality requirements of fingerprint fingerprint recognition, the fingerprint recognition device may also increase the trigger threshold; and re-acquire fingerprint data based on the increased trigger threshold; and then based on the re-acquired fingerprint data Perform fingerprint registration or fingerprint recognition.

The specific implementation of the method for dynamically adjusting the triggering threshold according to the embodiment of the present application is described below with reference to FIG. 8 by way of example:

FIG. 8 is a schematic flowchart of a method 600 for determining the trigger threshold according to an embodiment of the present application. The method 600 may be executed by a fingerprint identification device, for example, the terminal device 100 shown in FIG. 1. It may also be executed by a device installed with an application for determining the triggering threshold. Optionally, in a scenario where a target user uses a fingerprint function (such as fingerprint registration) for the first time, the device is triggered to execute the method 600, and the method 600 includes the following parts Or all:

S610: The target user's finger presses the display screen to generate a pressure value.

S620. The fingerprint recognition device determines whether the pressure value is greater than or equal to a trigger threshold. The trigger threshold may be a predetermined threshold. For example, the trigger threshold may be a trigger threshold determined by the method 500 described in FIG. 7.

S631. When the fingerprint recognition device determines that the pressure value is less than the trigger threshold, the target fingerprint data is not collected, and the target fingerprint data is fingerprint data collected based on the trigger threshold.

S632. The fingerprint recognition device displays information for prompting the target user to increase the pressing pressure through the display screen.

S641. When the fingerprint recognition device determines that the pressure value is greater than or equal to the trigger threshold, it collects the target fingerprint data.

S642. The fingerprint recognition device pre-analyzes the target fingerprint data.

S643. The fingerprint identification device determines whether the quality of the target fingerprint data meets the requirements of fingerprint identification or fingerprint registration by pre-analyzing the target fingerprint data.

S644. When the fingerprint recognition device pre-analyzes the target fingerprint data and determines that the quality of the target fingerprint data does not meet the requirements of fingerprint recognition or fingerprint registration, the trigger threshold is increased. Specifically, the trigger threshold may be increased according to a specific step to form an increased threshold, and then step S620 is performed based on the increased threshold. To avoid repetition, the operation of collecting fingerprint data based on the increased threshold is not described in detail.

S645. When the fingerprint recognition device pre-analyzes the first fingerprint data and determines that the quality of the first fingerprint data meets the requirements of fingerprint recognition or fingerprint registration, determines the first threshold as the trigger threshold.

It should be understood that the trigger threshold in the method 600 shown in FIG. 8 is a trigger threshold determined by the method 500 described in FIG. 7 and is merely an example, and the embodiment of the present application is not limited thereto. For example, in other alternative embodiments, the fingerprint recognition device may also perform dynamic adjustment based on a preset fixed threshold during each fingerprint registration or fingerprint recognition process.

It should be noted that in the above process of dynamically adjusting the trigger threshold, if data that does not meet the requirements has been collected and the trigger threshold has increased to an unreasonable range, at this time, the trigger threshold can be cleared and recalled to the original value. For example, callback or restore to a trigger threshold as determined in method 300.

Since the depth of the fingerprint texture is related to the temperature of the human body and / or the ambient temperature, in order to further improve the accuracy of the trigger threshold.

Optionally, the fingerprint recognition device may first determine multiple thresholds corresponding to multiple temperature ranges; further determine a target temperature; and then determine the threshold corresponding to the temperature range to which the target temperature belongs as the trigger threshold.

Optionally, the fingerprint identification device may determine the target temperature through a temperature sensor.

The temperature sensor includes, but is not limited to, a contact temperature sensor and a non-contact temperature sensor. The detection part of the contact temperature sensor has good contact with the measured object. The non-contact temperature sensor's sensitive components are not in contact with the measured object.

The method 700 for determining a trigger threshold according to an embodiment of the present application is described below with reference to FIG. 9. The method 700 may be performed by a fingerprint recognition device, for example, the terminal device 100 shown in FIG. 1. It may also be executed by a device installed with an application for determining the trigger threshold. Optionally, in a scenario where a target user uses a fingerprint function for the first time (for example, fingerprint registration), the device is triggered to execute the method 700, and the method 700 includes the following parts Or all:

S710: The temperature sensor determines a target temperature.

S720: The target user's finger presses the display screen to generate a pressure value.

S731. When the target temperature is a low temperature, the fingerprint recognition device determines whether the pressure value is greater than or equal to a low temperature threshold, and the low temperature threshold may be a pre-configured threshold.

S732. When the fingerprint recognition device determines that the pressure value is greater than or equal to the low temperature threshold, it collects fingerprint data.

S733. The fingerprint identification device determines whether the quality of the fingerprint data meets the requirements of fingerprint identification or fingerprint registration by pre-analyzing the fingerprint data.

S734. When the fingerprint recognition device pre-analyzes the fingerprint data and determines that the quality of the fingerprint data meets the requirements for fingerprint recognition or fingerprint registration, the fingerprint identification device determines the low temperature threshold as a low temperature trigger threshold.

S750. The fingerprint identification device determines the target fingerprint data by pre-analyzing the target fingerprint data to determine that the quality of the target fingerprint data does not meet the requirements of fingerprint identification or fingerprint registration, and increases the low temperature threshold. Specifically, the low temperature threshold may be increased by a specific step to form an increased threshold, and then step S731 is performed based on the increased threshold. To avoid repetition, the operation of collecting fingerprint data based on the increased threshold is not described in detail.

S741. When the target temperature is normal temperature, the fingerprint recognition device determines whether the pressure value is greater than or equal to a normal temperature threshold, and the normal temperature threshold may be a pre-configured threshold.

S742. When the fingerprint recognition device determines that the pressure value is greater than or equal to the normal temperature threshold, it collects fingerprint data.

S743. The fingerprint identification device determines whether the quality of the fingerprint data meets the requirements of fingerprint identification or fingerprint registration by pre-analyzing the fingerprint data.

S744. When the fingerprint recognition device pre-analyzes the fingerprint data and determines that the quality of the fingerprint data meets the requirements of fingerprint recognition or fingerprint registration, the normal temperature threshold is determined as the normal temperature trigger threshold.

S750. When the fingerprint identification device determines the quality of the target fingerprint data by pre-analyzing the target fingerprint data, the normal temperature threshold is increased when it is determined that the quality of the target fingerprint data does not meet the fingerprint identification or fingerprint registration requirements. Specifically, the normal temperature threshold may be increased according to a specific step size to form an increased threshold, and then step S741 and subsequent steps are performed based on the increased threshold. To avoid repetition, the operation of collecting fingerprint data based on the increased threshold is not described in detail.

S760. The fingerprint recognition device performs fingerprint registration or fingerprint recognition based on the low temperature trigger threshold and the normal temperature trigger threshold.

It should be understood that the low temperature trigger threshold and the normal temperature trigger threshold shown in FIG. 9 are only examples of the foregoing multiple thresholds, and the present application is not limited thereto. For example, the plurality of thresholds may further include a high temperature trigger threshold.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solution of the present application. These simple variations belong to the protection scope of the present application.

For example, the various specific technical features described in the above specific implementations can be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, this application no longer refers to various possible combinations. Explained separately.

For another example, various combinations of the embodiments of the present application can also be arbitrarily combined, as long as it does not violate the idea of the present application, it should also be regarded as the content disclosed in the present application. As an example, the fingerprint recognition device may determine multiple thresholds for a target user according to the method 500 shown in FIG. 7, and in actual applications, based on the method 700 shown in FIG. 9 and the target temperature among the multiple thresholds, determine The trigger threshold of the target user in the current environment. Further, after the trigger threshold is determined, the trigger threshold may be dynamically adjusted in combination with the method 600 shown in FIG. 8.

It should also be understood that, in the various method embodiments of the present application, 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 be applied to this application. The implementation process of the examples constitutes any limitation.

The method embodiments of the present application are described in detail above with reference to FIGS. 7 to 9, and the device embodiments of the present application are described in detail below with reference to FIGS. 10 to 12.

FIG. 10 is a schematic block diagram of a device 800 for fingerprint recognition according to an embodiment of the present application. As shown in FIG. 10, the apparatus 800 may include:

A determining unit 810 is configured to determine a trigger threshold; a collection unit 820 is configured to collect target fingerprint data when a target user presses a display screen in a fingerprint collection area when a pressure value is greater than or equal to the trigger threshold; a processing unit 830 is configured to Fingerprint registration or fingerprint recognition is performed according to the target fingerprint data.

Optionally, the foregoing determining unit 810 is specifically configured to:

Acquire a first threshold; collect the first fingerprint data when the pressure value is greater than or equal to the first threshold; determine the trigger threshold according to the quality of the first fingerprint data and the first threshold.

Optionally, the foregoing determining unit 810 is more specifically configured to:

When the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is increased up to a second threshold, wherein the second fingerprint data collected based on the second threshold is the first time that fingerprint registration or fingerprint recognition is satisfied. The fingerprint data of the required quality; determine the second threshold as the trigger threshold.

When the quality of the first fingerprint data meets the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is reduced to a third threshold, wherein the third fingerprint data collected based on the third threshold is the first time that the fingerprint registration or fingerprint is not satisfied. Fingerprint data required for the quality of the recognition; a threshold value before and recently used to collect the third fingerprint data is determined as the trigger threshold value.

Optionally, the first threshold value is a pre-configured threshold value, or the first threshold value is a pressure value generated when the target user presses the display screen for the first time during fingerprint registration.

Optionally, the foregoing determining unit 810 is specifically configured to:

Determine the trigger threshold specific to the target user.

Optionally, the foregoing determining unit 810 is specifically configured to:

Determining multiple thresholds corresponding to multiple temperature ranges; determining a target temperature; and determining the threshold corresponding to the temperature range to which the target temperature belongs as the trigger threshold.

The temperature sensor determines the target temperature.

Optionally, the processing unit 830 is specifically configured to:

When the quality of the target fingerprint data does not meet the quality requirements of fingerprint fingerprint recognition, increase the trigger threshold; re-acquire fingerprint data based on the increased trigger threshold; perform fingerprint registration or fingerprint recognition based on the re-acquired fingerprint data.

Optionally, the apparatus 800 further includes:

The display unit is configured to display the target fingerprint data through a display interface, and the target fingerprint data displayed on the display interface is used to prompt a user to adjust a pressing pressure pressed on the display screen.

It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, the device 800 for fingerprint identification shown in FIG. 10 may correspond to a corresponding subject in executing the method in the embodiment of the present application, and the foregoing and other operations and / or functions of each unit in the device 800 are respectively implemented to implement the diagram. 3. The corresponding processes in the methods in FIG. 7 to FIG. 9 are not repeated here for brevity.

The device for fingerprint identification in the embodiment of the present application is described above with reference to FIG. 10 from the perspective of a functional module. It should be understood that the functional module may be implemented by hardware, or by instructions in software, or by a combination of hardware and software modules.

Specifically, each step of the method embodiments in the embodiments of the present application may be completed by using hardware integrated logic circuits and / or software form instructions in the processor, and the steps of the method disclosed in the embodiments of the present application may be directly embodied as hardware. The execution of the decoding processor is completed, or the combination of hardware and software modules in the decoding processor is used for execution.

Optionally, the software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, 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 in the foregoing method embodiment in combination with its hardware.

For example, in the embodiment of the present application, the determining unit 810 and the processing unit 830 shown in FIG. 10 may be implemented by a processor, and the collecting unit shown in FIG. 10 may be implemented by a fingerprint recognition module.

FIG. 11 is a schematic structural diagram of a device 900 for fingerprint recognition according to an embodiment of the present application. The apparatus 900 shown in FIG. 11 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11, the device 900 may further include a memory 920. The memory 920 may be used to store instruction information, and may also be used to store code, instructions, and the like executed by the processor 910. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

The memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

Optionally, as shown in FIG. 11, the device 900 may further include a display screen 940 for displaying information to a user.

Optionally, as shown in FIG. 11, the device 900 may further include a fingerprint recognition module 930. After the processor 910 determines a trigger threshold, the fingerprint recognition module 930 may determine a fingerprint collection area where the user presses the display screen 940 based on the trigger threshold. Whether the generated pressure value can trigger the fingerprint data collection operation.

Optionally, the device 900 may correspond to the device 800 in the embodiment of the present application, and may correspond to the corresponding subject in the method embodiment of executing each method in FIG. 3, FIG. 7 to FIG. 9 according to the present application. This is not repeated here.

It should be understood that various components in the apparatus 900 are connected by a bus system, where the bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the processor mentioned in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.

For example, the above processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a ready-made programmable gate array (FPGA), or Other programmable logic devices, transistor logic devices, discrete hardware components, and more. In addition, the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In addition, the memory mentioned in the embodiments of the present application 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), or 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.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), 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 (synch link DRAM, SLDRAM), direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on.

FIG. 12 is a schematic structural diagram of an electronic device (such as a touch screen mobile phone) 1000 to which an embodiment of the present application is applied. As shown in FIG. 12, the electronic device 1000 includes:

The processor 1110, the memory 1120, and the touch display screen 1130.

The touch display screen 1130 includes a pressure sensor 1131. The pressure sensor 1131 is configured to sense a pressure of a touch input signal on the touch display screen 1130. The processor 1110 is configured to receive a pressure signal sensed by the pressure sensor 1131 and to process the pressure signal, for example, to trigger an application program in the electronic device 100 based on the pressure signal.

Optionally, as shown in FIG. 12, the device 1000 may further include a fingerprint recognition module 1180. After the processor 1110 determines the trigger threshold, the fingerprint recognition module 1180 may determine the fingerprint collection by the user pressing the touch display 1130 based on the trigger threshold. Whether the pressure value generated by the area can trigger the collection operation of fingerprint data.

Optionally, the electronic device may further include other components, such as an audio circuit 1140, a power supply 1150, a WiFi module 1160, and a radio frequency circuit 1170, as shown in FIG.

It should be noted that the terms used in the embodiments of the present application and the appended claims are merely for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application.

For example, the singular forms "a", "the", "the above", and "the" used in the examples of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise meaning.

Those skilled in the art may realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

If it is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments 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, which is stored in a storage medium. , Including a number of instructions to enable 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 foregoing storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the devices, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed electronic device, device, and method may be implemented in other ways.

For example, the division of units or modules or components in the device embodiments described above is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or modules or components may be combined or integrated. To another system, or some units or modules or components can be ignored or not implemented.

As another example, the units / modules / components described above as separate / display components may or may not be physically separated, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units / modules / components may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms .

The above content is only a specific implementation of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited to this. Any person skilled in the technical field can easily think of the technical scope disclosed in the embodiments of the present application. Changes or replacements should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method for fingerprint identification, comprising:

Determine the trigger threshold;

Collecting target fingerprint data when the pressure value generated by the target user pressing the display screen in the fingerprint collection area is greater than or equal to the trigger threshold;

Perform fingerprint registration or fingerprint recognition according to the target fingerprint data.
The method according to claim 1, wherein the determining a trigger threshold comprises:

Obtaining a first threshold;

Collecting the first fingerprint data when the pressure value is greater than or equal to the first threshold;

Determining the trigger threshold according to the quality of the first fingerprint data and the first threshold.
The method according to claim 2, wherein the determining the trigger threshold based on the quality of the first fingerprint data and the first threshold comprises:

When the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is increased to a second threshold, wherein the second fingerprint data collected based on the second threshold is the first time that fingerprint registration is satisfied. Or fingerprint data required for the quality of fingerprint recognition;

Determining the second threshold as the trigger threshold.
The method according to claim 2, wherein the determining the trigger threshold based on the quality of the first fingerprint data and the first threshold comprises:

When the quality of the first fingerprint data meets the quality requirements of fingerprint registration or fingerprint recognition, the first threshold is reduced to a third threshold, wherein the third fingerprint data collected based on the third threshold is the first time that the fingerprint is not satisfied. Fingerprint data required for registration or fingerprint identification;

The threshold value before and recently used to collect the third fingerprint data is determined as the trigger threshold value.
The method according to any one of claims 2 to 4, wherein the first threshold value is a pre-configured threshold value, or the first threshold value is the first time the display is pressed when the target user performs fingerprint registration. The pressure value generated by the screen.
The method according to any one of claims 1 to 5, wherein the determining a trigger threshold comprises:

Determining the trigger threshold specific to the target user.
The method according to any one of claims 1 to 6, wherein the determining a trigger threshold comprises:

Determining multiple thresholds corresponding to multiple temperature ranges;

Determine the target temperature;

A threshold corresponding to a temperature range to which the target temperature belongs is determined as the trigger threshold.
The method according to claim 7, wherein the determining the target temperature comprises:

The target temperature is determined by a temperature sensor.
The method according to any one of claims 1 to 8, wherein the performing fingerprint registration or fingerprint recognition according to the target fingerprint data comprises:

Increasing the trigger threshold when the quality of the target fingerprint data does not meet the quality requirements for fingerprint fingerprint recognition;

Re-collecting fingerprint data based on the increased trigger threshold;

Fingerprint registration or fingerprint recognition based on the re-acquired fingerprint data.
The method according to any one of claims 1 to 9, further comprising:

The target fingerprint data is displayed through a display interface, and the target fingerprint data displayed on the display interface is used to prompt a user to adjust the degree of pressing force pressed on the display screen.
A device for fingerprint identification, comprising:

A determining unit for determining a triggering threshold;

A collection unit, configured to collect target fingerprint data when a target user presses a display screen in a fingerprint collection area when a pressure value is greater than or equal to the trigger threshold;

A processing unit, configured to perform fingerprint registration or fingerprint recognition according to the target fingerprint data.
The device according to claim 11, wherein the determining unit is specifically configured to:

Obtaining a first threshold;

Collecting the first fingerprint data when the pressure value is greater than or equal to the first threshold;

Determining the trigger threshold according to the quality of the first fingerprint data and the first threshold.
The apparatus according to claim 12, wherein the determining unit is more specifically configured to:

When the quality of the first fingerprint data does not meet the quality requirements for fingerprint registration or fingerprint recognition, the first threshold is increased to a second threshold, wherein the second fingerprint data collected based on the second threshold is the first time that fingerprint registration is satisfied. Or fingerprint data required for the quality of fingerprint recognition;

Determining the second threshold as the trigger threshold.
The apparatus according to claim 12, wherein the determining unit is more specifically configured to:

When the quality of the first fingerprint data meets the quality requirements of fingerprint registration or fingerprint recognition, the first threshold is reduced to a third threshold, wherein the third fingerprint data collected based on the third threshold is the first time that the fingerprint is not satisfied. Fingerprint data required for registration or fingerprint identification;

The threshold value before and recently used to collect the third fingerprint data is determined as the trigger threshold value.
The device according to any one of claims 12 to 14, wherein the first threshold is a pre-configured threshold, or the first threshold is the first time the display is pressed when the target user performs fingerprint registration. The pressure value generated by the screen.
The device according to any one of claims 11 to 15, wherein the determining unit is specifically configured to:

Determining the trigger threshold specific to the target user.
The device according to any one of claims 11 to 16, wherein the determining unit is specifically configured to:

Determining multiple thresholds corresponding to multiple temperature ranges;

Determine the target temperature;

A threshold corresponding to a temperature range to which the target temperature belongs is determined as the trigger threshold.
The apparatus according to claim 17, wherein the determining unit is more specifically configured to:

The target temperature is determined by a temperature sensor.
The device according to any one of claims 11 to 18, wherein the processing unit is specifically configured to:

Increasing the trigger threshold when the quality of the target fingerprint data does not meet the quality requirements for fingerprint fingerprint recognition;

Re-collecting fingerprint data based on the increased trigger threshold;

Fingerprint registration or fingerprint recognition based on the re-acquired fingerprint data.
The device according to any one of claims 11 to 19, wherein the device further comprises:

A display unit is configured to display the target fingerprint data through a display interface, and the target fingerprint data displayed on the display interface is used to prompt a user to adjust a pressing pressure pressed on the display screen.
An electronic device, comprising:

The device according to any one of claims 11 to 20.