CN116700802A - Fingerprint module control method and control device - Google Patents

Abstract

The application provides a control method and a control device of a fingerprint module, and the control method can be applied to terminal equipment. The control method may include: the terminal equipment reads a chip identifier of a chip where the fingerprint module is located; if the number of continuous failure times of reading the chip identification is greater than or equal to the first preset number of times, the terminal equipment performs power-down operation on the fingerprint module. According to the control method provided by the application, when the fingerprint module is abnormal, the fingerprint module can be subjected to abnormal processing, so that the control method can be suitable for various different scenes and is beneficial to reducing the risk of scalding users.

Description

Fingerprint module control method and control device

technical field

The present application relates to the technical field of terminals, in particular to a control method and a control device for a fingerprint module.

Background technique

Generally, a terminal device may include a fingerprint module to provide a user with a fingerprint unlocking function. If the fingerprint module of the terminal device is damaged when the terminal device is knocked or dropped, it will cause a short circuit on the chip where the fingerprint module is located, which will cause the temperature of the fingerprint module to rise, and there is a risk of scalding the user.

In response to the above problems, the terminal field has proposed the following method: the chip where the fingerprint module is located detects the current in the chip, and if the current is too large, it outputs an over current protection (over current protection, OCP) interrupt signal; the main control of the terminal device After the chip detects the OCP interrupt signal, it handles the abnormality of the fingerprint module and powers off the fingerprint module.

However, the above method will have the following problems: in the scenario where the chip where the fingerprint module is located is also damaged and the OCP interrupt signal cannot be generated and output, the main control chip of the terminal device cannot know the abnormality of the chip where the fingerprint module is located to perform corresponding abnormalities. handling, there is still a risk of scalding the user.

Contents of the invention

The present application provides a control method and a control device for a fingerprint module. When the location of the fingerprint module is abnormal, abnormal processing can be performed on the fingerprint module, which is beneficial to reduce the risk of scalding the user.

In the first aspect, a method for controlling a fingerprint module is provided, which can be applied to a terminal device. The method includes: the terminal device reads the chip identification of the chip where the fingerprint module is located; if the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, the terminal device performs power-off operation on the fingerprint module.

The chip identification of the chip where the fingerprint module is located can be stored in a register of the chip where the fingerprint module is located, and the terminal device can read the chip identification from the register.

The terminal device can periodically or continuously read the chip identification of the chip where the fingerprint module is located multiple times within a fixed period of time. If the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, the terminal device powers off the fingerprint module. Wherein, the number of times the terminal device reads the chip identification of the chip where the fingerprint module is located may be greater than or equal to the first preset number of times. The first preset number of times is preset in the terminal device after being calibrated by the developer. The first preset number of times may be 3 times, 4 times, 5 times or 6 times, etc., which is not limited in this application.

For example, if the number of times the terminal device reads the chip identification is the same as the first preset number of times, both equal to 3, the terminal device can read the chip identification of the chip where the fingerprint module is located every 1 second, and read continuously 3 times. Alternatively, the terminal device reads the chip identification of the chip where the fingerprint module is located at the 1st second, the 5th second and the 60th second each within one minute.

If the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, the terminal device powers off the fingerprint module.

For example, if the number of times the terminal device reads the chip identification is the same as the first preset number of times, the terminal device fails to read each time, which can indicate that the fingerprint module is abnormal, and the terminal device powers off the fingerprint module. In the examples shown in method 300, method 500, and method 700 in specific embodiments of the present application, the number of times the terminal device reads the chip identification is the same as the first preset number of times. The number of times the terminal device reads the chip identification may also be referred to as the first preset number of times.

For example, if the number of times the terminal device reads the chip ID is greater than the first preset number, and the number of times the terminal device reads the chip ID is 6, and the first preset number is 3, then there are consecutive If the reading fails for 3 times, it can indicate that the fingerprint module is abnormal, and the terminal device will power off the fingerprint module.

It should be noted that the terminal device can read the chip identification when the display screen of the terminal device is in the bright state or in the case that the display screen of the terminal device is in the off state, which is not limited in this application.

The control method of the fingerprint module provided by this application reads the chip identification of the chip where the fingerprint module is located, if the number of consecutive reading failures is greater than or equal to the first preset number of times, it is determined that the fingerprint module is abnormal, and the fingerprint module is checked. Power-off operation to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user.

With reference to the first aspect, in some implementations of the first aspect, the terminal device reads the chip identification of the chip where the fingerprint module is located, including: if the display screen of the terminal device is in the bright state and the fingerprint module is in the entry state , authentication status, cancellation status or idle status, the terminal device reads the chip identification.

The terminal device includes a display screen, and the display screen can be in a screen-on state or a screen-off state. When the display screen is off, the terminal device can detect that the display screen is in the off state.

The fingerprint module can include an entry state (Enroll), an authentication state (Authenticate), a cancellation state (Cancel), an idle state (Idle) and a sleep state (Sleep). Among them, the entry state, authentication state and cancellation state are the states when the fingerprint module enters the fingerprint for authentication. A sleep state refers to a low power state. The idle state is the default state after the fingerprint module is powered on or reset. When the fingerprint module is in the idle state, the terminal device can switch it to any other state through commands. It should be noted that, to switch between various states of the fingerprint module, it must be switched to the idle state first and then switched to other modes.

It should also be noted that the fingerprint module can be in the entry state, authentication state, cancellation state, idle state or sleep state, it can also be called the fingerprint module can be in entry mode, authentication mode, cancellation mode, idle mode or sleep mode, This application is not limited to this.

Before the terminal device reads the chip identification, it can obtain the status of the display screen and fingerprint module. When the display screen is on and the fingerprint module is in the entry state, authentication state or idle state, the terminal device can read the chip identification.

The control method of the fingerprint module provided by this application reads the chip identification when the display screen is in the bright state and the fingerprint module is in the input state, authentication state or idle state, which can be applied to different scenarios and has flexibility. stronger.

With reference to the first aspect, in some implementations of the first aspect, the terminal device reads the chip identification of the chip where the fingerprint module is located, including: if the display screen of the terminal device is in a bright state and the fingerprint module is in a dormant state , the terminal device wakes up the fingerprint module first, and then reads the chip identification.

When the fingerprint module is in a dormant state, it enters a low power consumption state, and the terminal device can wake up the fingerprint module by commanding or resetting the chip where the fingerprint module is located. After the fingerprint module wakes up, it enters the idle state. At this time, the display screen of the terminal device is in a bright state and the fingerprint module is in an idle state, and the terminal device can read the chip identification.

The fingerprint module control method provided by this application can wake up the fingerprint module if the fingerprint module is in the dormant state when the display screen is in the bright state, and read the chip identification after entering the idle state, which can be applied to the fingerprint module sleep scene.

With reference to the first aspect, in some implementations of the first aspect, the terminal device reads the chip identification of the chip where the fingerprint module is located, including: if the display screen of the terminal device is in the off-screen state and the fingerprint module stores fingerprint information , the terminal device reads the chip identification.

The terminal device includes a display screen, and the display screen can be in a screen-on state or a screen-off state. When the display screen is off, the terminal device can detect that the display screen is in the off state.

The fingerprint module can collect fingerprint information, and the fingerprint module can include two situations of recording fingerprint information and not recording fingerprint information. If the fingerprint module records the user's fingerprint, the terminal device can detect that the fingerprint module records fingerprint information.

If the display screen of the terminal device is off and the fingerprint module stores fingerprint information, the terminal device can read the chip identification. At this time, the state of the fingerprint module may be an authentication state, a cancel state, an idle state or a dormant state, which is not limited in this application.

The control method of the fingerprint module provided by the present application reads the chip identification when the display screen is off and the fingerprint module is in the scene where fingerprint information is recorded.

In combination with the first aspect, in some implementations of the first aspect, the above-mentioned terminal device reads the chip identification of the chip where the fingerprint module is located, including: if the display screen of the terminal device is in the off-screen state, and the fingerprint module does not store fingerprints information and the fingerprint module is in an idle state, the terminal device reads the chip identification.

When the display screen is off and the fingerprint module records fingerprint information, the fingerprint module can include an idle state and a dormant state. If the fingerprint module is in an idle state, the terminal device reads the chip identification of the chip where the fingerprint module is located.

The method for controlling the fingerprint module provided by the present application reads the chip identification when the display screen is off, no fingerprint information is stored in the fingerprint module, and the fingerprint module is in an idle state.

In combination with the first aspect, in some implementations of the first aspect, the above-mentioned terminal device reads the chip identification of the chip where the fingerprint module is located, including: if the display screen of the terminal device is in the off-screen state, and the fingerprint module does not store fingerprints information and the fingerprint module is in a dormant state, the terminal device wakes up the fingerprint module first, and then reads the chip identification.

When the display screen is off and the fingerprint module records fingerprint information, the fingerprint module can include an idle state and a dormant state. If the fingerprint module is in a dormant state, the terminal device can wake up the fingerprint module first, and then read the chip identification.

The fingerprint module control method provided by this application can wake up the fingerprint module if the fingerprint module is in a dormant state when the display screen is in the off-screen state and the fingerprint module records fingerprint information. Read the chip identification, which can be applied to the dormancy scene of the fingerprint module.

In combination with the first aspect, in some implementations of the first aspect, the above method further includes: the terminal device powers on the fingerprint module; the terminal device re-reads the chip identification; if the number of consecutive failures to read the chip identification is greater than or equal to the second preset number of times, the terminal device powers off the fingerprint module, and the second preset number of times is greater than or equal to the first preset number of times.

If the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, the terminal device may perform power-on operation after power-off operation of the fingerprint module. The terminal device can power on the fingerprint module immediately after powering off the fingerprint module, or it can power on the fingerprint module after powering off the fingerprint module and then power on the fingerprint module. There is no limit to this.

After the fingerprint module is powered on, the terminal device can read the chip identification periodically or multiple times in a row at a fixed time. Wherein, the time at which the terminal device re-reads the chip identification may be greater than or equal to the second preset number of times. The second preset number of times may be 3 times, 4 times, 5 times or 6 times, etc., which is not limited in this application. The second preset number of times may be the same as or different from the above-mentioned first preset number of times, which is not limited in this application.

For example, if the number of times the terminal device reads the chip identification is the same as the second preset number of times, both equal to 6, the terminal device can read the chip identification of the chip where the fingerprint module is located every 1 second, and read continuously 6 times.

If the number of consecutive failures to read the chip identification is greater than or equal to the second preset number of times, the terminal device performs a power-off operation on the fingerprint module, and the second preset number of times is greater than or equal to the first preset number of times.

For example, if the number of times the terminal device re-reads the chip identification is the same as the second preset number of times, the terminal device fails to read each time, which can indicate that the fingerprint module is abnormal, and the terminal device performs power-off operation on the fingerprint module . In the examples shown in method 300, method 500, and method 700 in specific embodiments of the present application, the number of times the terminal device re-reads the chip identification is the same as the second preset number of times. The number of times the terminal device re-reads the chip identification may also be referred to as the second preset number of times.

For example, if the number of times the terminal device re-reads the chip identification is greater than the second preset number of times, and the number of times the terminal device reads the chip identification is 10, and the second preset number of times is 6, then there are Six consecutive read failures indicate that the fingerprint module is abnormal, and the terminal device powers off the fingerprint module.

The control method of the fingerprint module provided by this application is to power off the fingerprint module and then power it on again to judge whether the chip identification of the chip where the fingerprint module is located can be read again. If the number of consecutive reading failures is greater than or equal to the second The preset number of times determines that the fingerprint module is abnormal, which can improve the recognition accuracy and help reduce the risk of misjudgment.

In a second aspect, a control device for a fingerprint module is provided, and the device includes: a reading module and a processing module. Wherein, the reading module is used to: read the chip identification of the chip where the fingerprint module is located; the processing module is used to: if the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, power off the fingerprint module operate.

With reference to the second aspect, in some implementations of the second aspect, the above-mentioned reading module is also used: if the display screen of the above-mentioned control device is in the bright screen state, and the fingerprint module is in the entry state, authentication state, cancel state or In the idle state, read the chip identification.

In conjunction with the second aspect, in some implementations of the second aspect, if the display screen of the control device is in a bright state and the fingerprint module is in a dormant state, wake up the fingerprint module; the reading module is also used for: Read chip ID.

With reference to the second aspect, in some implementation manners of the second aspect, the reading module is further configured to read the chip identification if the display screen of the control device is off and the fingerprint module stores fingerprint information.

In conjunction with the second aspect, in some implementations of the second aspect, the above-mentioned reading module is also used for: if the display screen of the above-mentioned control device is in the off-screen state, the fingerprint module does not store fingerprint information and the fingerprint module is idle status, read the chip ID of the chip where the fingerprint module is located.

With reference to the second aspect, in some implementations of the second aspect, the processing module is further configured to: if the display screen of the control device is off, the fingerprint module does not store fingerprint information, and the fingerprint module is in a dormant state , wake up the fingerprint module; the above-mentioned reading module is also used for: reading the chip identification.

In combination with the second aspect, in some implementations of the second aspect, the above-mentioned processing module is also used to: perform power-on operation on the fingerprint module; the above-mentioned reading module is also used to: re-read the chip identification; the processing module is also used to In: if the number of consecutive failures to read the chip identification is greater than or equal to the second preset number of times, power off the fingerprint module, and the second preset number of times is greater than or equal to the first preset number of times.

In a third aspect, the present application provides a control device for a fingerprint module, the control device includes: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the control device executes as described in the first aspect Methods.

In a fourth aspect, the present application provides a terminal device, which may also be referred to as a terminal (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc. . The terminal device can be mobile phone, smart TV, wearable device, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal device, augmented reality (augmented reality, AR) terminal device , wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety Wireless terminals in (transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, etc.

The terminal device includes: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method according to the first aspect.

In a fifth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method in the first aspect is implemented.

In a sixth aspect, the present application provides a computer program product, the computer program product includes a computer program, and when the computer program is executed, the computer is made to execute the method in the first aspect.

In a seventh aspect, the present application provides a chip, the chip includes a processor, and the processor is used to call a computer program in a memory to execute the method as described in the first aspect.

It should be understood that the second aspect to the seventh aspect of the present application correspond to the technical solution of the first aspect of the present application, and the beneficial effects obtained by each aspect and the corresponding feasible implementation manners are similar, so details are not repeated here.

Description of drawings

Fig. 1 is a schematic diagram of detecting abnormality of a fingerprint module;

FIG. 2 is a software structural block diagram of a terminal device applicable to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a fingerprint module control method provided by an embodiment of the present application;

Fig. 4 is a schematic diagram of a state of a fingerprint module;

Fig. 5 is a schematic flowchart of another fingerprint module control method provided by the embodiment of the present application;

Fig. 6 is a schematic diagram of another fingerprint module state;

Fig. 7 is a schematic flowchart of another fingerprint module control method provided by the embodiment of the present application;

Fig. 8 is a schematic flowchart of another fingerprint module control method provided by the embodiment of the present application;

Fig. 9 is a schematic flowchart of another fingerprint module control method provided by the embodiment of the present application;

Fig. 10 is a schematic block diagram of a control device for a fingerprint module provided by an embodiment of the present application;

Fig. 11 is a schematic block diagram of another fingerprint module control device provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

A terminal device may also be called a terminal (terminal), a user equipment (user equipment, UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT) and so on. The terminal device can be mobile phone, smart TV, wearable device, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal device, augmented reality (augmented reality, AR) terminal device , wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety Wireless terminals in (transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, etc.

Generally, a terminal device may include a fingerprint module to provide a user with a fingerprint unlocking function. If the fingerprint module of the terminal device is damaged when the terminal device is knocked or dropped, it will cause a short circuit on the chip where the fingerprint module is located, which will cause the temperature of the fingerprint module to rise, and there is a risk of scalding the user.

Exemplarily, the terminal device may be a mobile phone. When the fingerprint module is embedded in the power button and located on the side edge of the mobile phone, there is a high probability of damage when the terminal device is bumped or dropped. If the fingerprint module is damaged and the chip where the fingerprint module is located is short-circuited, the temperature of the fingerprint module will rise. When the user touches the position of the power button to unlock the fingerprint or press the power button, the probability of scalding the user is high.

In response to the above problems, the terminal field has proposed the following method: the chip where the fingerprint module is located detects the current in the chip, and if the current is too large, it outputs an over current protection (over current protection, OCP) interrupt signal; the main control of the terminal device After the chip detects the OCP interrupt signal, it handles the abnormality of the fingerprint module and powers off the fingerprint module.

Exemplarily, FIG. 1 shows a schematic diagram of detecting an abnormality of a fingerprint module. The chip where the fingerprint module is located may include a domain current selector, which can detect the current in the chip. The regional current selector may also be called an overcurrent protection device, which is not limited in this embodiment of the present application. The fingerprint module can include registers, which can be used to store data.

When the area current selector detects that the current of the chip is too large, it can generate an OCP interrupt signal and write the over-current interrupt flag into the register. The main control chip of the terminal device detects the OCP interrupt signal, can read the overcurrent interrupt flag in the register, and power off the fingerprint module.

However, in the implementation shown in Figure 1, when the chip where the fingerprint module is located is severely damaged, the regional current selector cannot generate the OCP interrupt signal, or the terminal device cannot read and write the register, which will cause the terminal The device cannot power off the fingerprint module, and there is still a risk of scalding the user.

In view of this, the embodiment of the present application provides a control method and a control device for a fingerprint module, which reads the identification of the chip where the fingerprint module is located multiple times. The group is powered off to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user.

The method provided in the embodiment of the present application can be applied to any terminal device including a fingerprint module. For example, mobile phones, tablet computers, personal computers (personal computers, PCs), and smart watches and other wearable terminal devices can also be various teaching aids (such as learning machines, early education machines), smart toys, portable robots, personal digital Assistant (personal digital assistant, PDA), augmented reality (augmented reality, AR) equipment, virtual reality (virtual reality, VR) equipment, etc., can also be a device with mobile office function, a device with smart home function, a device with audio-visual Devices with entertainment functions, devices supporting smart travel, etc. It should be understood that the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

The software system of the terminal device may adopt a layered architecture, an event-driven architecture, a micro-kernel architecture, a micro-service architecture, or a cloud architecture. The embodiment of the present application takes the Android system with a layered architecture as an example to illustrate the software structure of the terminal device.

FIG. 2 is a software structural block diagram of a terminal device applicable to an embodiment of the present application. The layered architecture divides the software system of the terminal device into several layers, and each layer has a clear role and division of labor. Layers communicate through software interfaces. In some embodiments, the Android system can be divided into five layers, which are applications, application framework, Android runtime, system library, and hardware abstraction layer. layer, HAL) and the kernel layer (kernel).

The application program layer may include a series of application program packages, and the application program layer runs the application program by calling an application program interface (application programming interface, API) provided by the application program framework layer. As shown in Figure 2, the application package may include applications such as a camera, a gallery, a calendar, a call, and a map.

The application framework layer provides API and programming framework for applications in the application layer. The application framework layer includes some predefined functions. As shown in Figure 2, the application framework layer may include window managers, content providers, and view systems.

A window manager is used to manage window programs. The window manager can get the size of the display screen, determine whether there is a status bar, lock the screen, capture the screen, etc. Content providers are used to store and retrieve data and make it accessible to applications. Data can include videos, images, audio, calls made and received, browsing history and bookmarks, phonebook, etc. The view system includes visual controls, such as controls for displaying text, controls for displaying pictures, and so on. The view system can be used to build applications. A display interface can consist of one or more views. For example, a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.

The Android runtime includes core libraries and a virtual machine. The Android runtime is responsible for the scheduling and management of the Android system. The core library consists of two parts: one part is the function function that the java language needs to call, and the other part is the core library of Android. The application layer and the application framework layer run in virtual machines. The virtual machine executes the java files of the application program layer and the application program framework layer as binary files. The virtual machine is used to perform functions such as object life cycle management, stack management, thread management, security and exception management, and garbage collection. A system library can include multiple function modules. For example: surface manager (surface manager), media library (Media Libraries), and three-dimensional graphics processing library (eg: OpenGL ES), etc.

The surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications. The media library supports playback and recording of various commonly used audio and video formats, as well as still image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc. The 3D graphics processing library is used to implement 3D graphics drawing, image rendering, compositing and layer processing, etc.

The hardware abstraction layer can contain multiple library modules, for example, the library module can be a camera library module, etc. The Android system can load corresponding library modules for the device hardware, and then realize the purpose of the application framework layer accessing the device hardware. Device hardware may include, for example, a camera in a terminal device. The hardware abstraction layer may also include a fingerprint module abnormal identification module, which is used to read the chip identification of the chip where the fingerprint module is located to determine whether the fingerprint module is abnormal. The abnormal identification module of the fingerprint module can also receive the interrupt signal generated by the fingerprint module due to the collection of fingerprints, so as to notify the fingerprint processing module in the kernel layer to process the collected fingerprints. The abnormal identification module of the fingerprint module may also be called the fingerprint HAL layer module, which is not limited in this embodiment of the present application.

The kernel layer is the layer between hardware and software. The kernel layer is used to drive the hardware and make the hardware work. The kernel layer includes at least a display driver and a fingerprint driver, which are not limited in this embodiment of the present application. The kernel layer also includes a power management module and a fingerprint processing module. Wherein, the display driver may be used to detect the on-off state of the display screen of the terminal device. The fingerprint driver can be used to receive the power-off command of the abnormal identification module of the fingerprint module, and based on the power-off command, notify the power management module to power off the fingerprint module, and can also be used to receive the power-on command of the abnormal identification module of the fingerprint module. power-on instruction, and based on the power-on instruction, notify the power management module to perform power-on operation on the fingerprint module. The notification power management module can be used to perform power-on or power-off operations on the fingerprint module based on fingerprint-driven instructions. The fingerprint processing module is used to receive the fingerprints collected by the fingerprint module, and record or authenticate the fingerprints. The fingerprint processing module may also be called a fingerprint trusted application (trusted application, TA) module, which is not limited in this embodiment of the present application.

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "for example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .

The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments may be implemented independently, or may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 3 shows a schematic flowchart of a fingerprint module control method 300 . The method 300 can be executed by a terminal device, for example, a mobile phone. The terminal device may include a display screen and a fingerprint module. The software structure of the terminal device may be as shown in FIG. 2 above, but this embodiment of the present application is not limited thereto.

As shown in FIG. 3, the method 300 may include the following steps:

S301. It is detected that the display screen is in a bright screen state.

A display screen may also be called a screen, which is not limited in this embodiment of the present application. The terminal device includes a display screen, and the display screen can be in a screen-on state or a screen-off state. When the display screen is on, the terminal device can detect that the display screen is on.

Exemplarily, the on-off state of the display screen may be represented by binary symbols. The bright screen can be represented by a binary 0, and the off screen can be represented by a binary 1. When the terminal device detects a binary 0, the terminal device can detect that the display screen is in a bright state.

S302. Determine whether the fingerprint module is in a dormant state.

The fingerprint module can collect fingerprint information, and the fingerprint module can include two situations of recording fingerprint information and not recording fingerprint information. The fingerprint module can be in different states in these two cases respectively.

Exemplarily, FIG. 4 shows a schematic diagram of a status of a fingerprint module. As shown in Figure 4, when the display screen is in the bright screen state, if the fingerprint module records fingerprint information, the fingerprint module can include the entry status (Enroll), authentication status (Authenticate), cancellation status (Cancel), Idle state (Idle) and sleep state (Sleep). Among them, the entry state, authentication state and cancellation state are the states when the fingerprint module enters the fingerprint for authentication. If the fingerprint module does not record fingerprint information, the fingerprint module may include an idle state (Idle) and a sleep state (Sleep).

The terminal device can determine whether the fingerprint module is in a dormant state. The dormant state can be the dormant state when the fingerprint module records fingerprint information, or the dormant state when the fingerprint module does not record fingerprint information. This is not limited.

If the fingerprint module is in the sleep state, the terminal device can wake it up, that is, execute S303; if the fingerprint module is not in the sleep state, the terminal device can directly read the chip identification of the chip where the fingerprint module is located, that is, execute S304. It can be understood that, if the fingerprint module is not in the dormant state, the fingerprint module can be in the entry state, authentication state, cancellation state or idle state.

S303. If the fingerprint module is in a dormant state, wake up the fingerprint module.

When the fingerprint module is in a dormant state, it enters a low power consumption state, and the terminal device can wake up the fingerprint module by commanding or resetting the chip where the fingerprint module is located. After the fingerprint module wakes up, it enters the idle state.

The idle state is the default state after the fingerprint module is powered on or reset. When the fingerprint module is in the idle state, the terminal device can switch it to any other state through commands. It should be noted that, to switch between various states of the fingerprint module, it must be switched to the idle state first and then switched to other modes.

It should also be noted that the fingerprint module can be in the entry state, authentication state, cancellation state, idle state or sleep state, it can also be called the fingerprint module can be in entry mode, authentication mode, cancellation mode, idle mode or sleep mode, This embodiment of the present application does not limit it.

S304. Read the chip identification (chip identity, chip ID) of the chip where the fingerprint module is located multiple times consecutively.

The terminal device can periodically or continuously read the chip identification of the chip where the fingerprint module is located multiple times within a fixed period of time. The number of times the terminal device reads the chip identification of the chip where the fingerprint module is located can be called the first preset number of times, which is preset in the terminal device after being calibrated by the developer. The first preset number of times may be 3 times, 4 times, 5 times, or 6 times, etc., which is not limited in this embodiment of the present application.

Exemplarily, the terminal device can read the chip identification of the chip where the fingerprint module is located every 1 second, and read 3 times continuously. Alternatively, the terminal device reads the chip identification of the chip where the fingerprint module is located at the 1st second, the 5th second and the 60th second within one minute.

S305 , judging whether all readings fail.

The terminal device judges whether reading fails every time.

Exemplarily, if the terminal device reads the chip identification of the chip where the fingerprint module is located three consecutive times, the terminal device can determine whether the three readings fail.

If the terminal device fails to read every time, the terminal device may execute S307. If the terminal device does not fail to read every time, that is, there is at least one successful read, the terminal device may execute S306.

S306. If none of them fail to be read, the terminal device may determine that the fingerprint module is normal.

If the terminal device does not fail to read every time, it can indicate that the fingerprint module is normal, and the terminal device can determine that the fingerprint module is normal.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located three times consecutively, and fails to read all three times, the terminal device can determine that the fingerprint module is normal.

S307. If all readings fail, the terminal device may determine that the fingerprint module is abnormal.

If the terminal device fails to read every time, it can indicate that the fingerprint module is abnormal, and the terminal device can determine that the fingerprint module is abnormal, and can power off the fingerprint module.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located three times consecutively, and fails to read all three times, the terminal device can determine that the fingerprint module is abnormal.

The control method of the fingerprint module provided in the embodiment of the present application reads the chip identification of the chip where the fingerprint module is located multiple times when the display screen is bright. If the multiple readings fail, it is determined that the fingerprint module is abnormal. The module is powered off to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user.

FIG. 5 shows a schematic flowchart of another fingerprint module control method 500 . The method 500 can be executed by a terminal device, for example, a mobile phone. The terminal device may include a display screen and a fingerprint module. The software structure of the terminal device may be as shown in FIG. 2 above, but this embodiment of the present application is not limited thereto.

As shown in FIG. 5, the method 500 may include the following steps:

S501. It is detected that the display screen is in a screen-off state.

The terminal device includes a display screen, and the display screen can be in a screen-on state or a screen-off state. When the display screen is off, the terminal device can detect that the display screen is in the off state.

Exemplarily, the on-off state of the display screen may be represented by binary symbols. The bright screen can be represented by a binary 0, and the off screen can be represented by a binary 1. When the terminal device detects binary 1, the terminal device can detect that the display screen is in an off state.

S502. Determine whether the fingerprint module records fingerprint information.

The fingerprint module can collect fingerprint information, and the fingerprint module can include two situations of recording fingerprint information and not recording fingerprint information. If the fingerprint module does not record the user's fingerprint, the terminal device may detect that the fingerprint module does not record fingerprint information, and may continue to execute S503. If the fingerprint module records the user's fingerprint, the terminal device can detect that the fingerprint module records fingerprint information, and can continue to execute S505.

S503. If the fingerprint module does not record fingerprint information, determine whether the fingerprint module is in a dormant state.

In the case that the fingerprint module records fingerprint information, the fingerprint module may include an idle state and a dormant state.

Exemplarily, FIG. 6 shows a schematic diagram of a status of a fingerprint module. As shown in Figure 6, when the display screen is in the off-screen state, if the fingerprint module records fingerprint information, the fingerprint module can include authentication status (Authenticate), cancellation status (Cancel), idle status (Idle) and Dormant state (Sleep). If the fingerprint module does not record fingerprint information, the fingerprint module may include an idle state (Idle) and a sleep state (Sleep).

The terminal device can determine whether the fingerprint module is in a dormant state. If the fingerprint module is in the sleep state, the terminal device can wake it up, that is, execute S504; if the fingerprint module is not in the sleep state, the terminal device can directly read the chip identification of the chip where the fingerprint module is located, that is, execute S505. It can be understood that, if the fingerprint module is not in the sleep state, the fingerprint module can be in the idle state.

S504. If the fingerprint module does not record fingerprint information and is in a dormant state, wake up the fingerprint module.

When the fingerprint module is in a dormant state, it enters a low power consumption state, and the terminal device can wake up the fingerprint module by commanding or resetting the chip where the fingerprint module is located. After the fingerprint module wakes up, it enters the idle state.

The idle state is the default state after the fingerprint module is powered on or reset. When the fingerprint module is in the idle state, the terminal device can switch it to any other state through commands. It should be noted that, to switch between various states of the fingerprint module, it must be switched to the idle state first and then switched to other modes.

It should also be noted that the fingerprint module can be in the entry state, authentication state, cancellation state, idle state or sleep state, it can also be called the fingerprint module can be in entry mode, authentication mode, cancellation mode, idle mode or sleep mode, This embodiment of the present application does not limit it.

S505. Read the chip identification of the chip where the fingerprint module is located multiple times consecutively.

The terminal device can periodically or continuously read the chip identification of the chip where the fingerprint module is located multiple times within a fixed period of time. The number of times the terminal device reads the chip identification of the chip where the fingerprint module is located can be called the first preset number of times, which is preset in the terminal device after being calibrated by the developer. The first preset number of times may be 3 times, 4 times, 5 times, or 6 times, etc., which is not limited in this embodiment of the present application.

Exemplarily, the terminal device can read the chip identification of the chip where the fingerprint module is located every 1 second, and read 3 times continuously. Alternatively, the terminal device reads the chip identification of the chip where the fingerprint module is located at the 1st second, the 5th second and the 60th second within one minute.

S506 , judging whether all reading fails.

The terminal device judges whether reading fails every time.

Exemplarily, if the terminal device reads the chip identification of the chip where the fingerprint module is located three consecutive times, the terminal device can determine whether the three readings fail.

If the terminal device fails to read every time, the terminal device may execute S508. If the terminal device does not fail to read every time, that is, there is at least one successful read, the terminal device may execute S507.

S507. If none of them fail to be read, the terminal device may determine that the fingerprint module is normal.

If the terminal device does not fail to read every time, it can indicate that the fingerprint module is normal, and the terminal device can determine that the fingerprint module is normal.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located three times consecutively, and the three readings do not all fail, the terminal device can determine that the fingerprint module is normal.

S508. If all readings fail, the terminal device may determine that the fingerprint module is abnormal.

If the terminal device fails to read every time, it can indicate that the fingerprint module is abnormal, and the terminal device can determine that the fingerprint module is abnormal, and can power off the fingerprint module.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located three times consecutively, and fails to read all three times, the terminal device can determine that the fingerprint module is abnormal.

In the control method of the fingerprint module provided in the embodiment of the present application, when the display screen is off, the identification of the chip where the fingerprint module is located is read multiple times. If multiple readings fail, it is determined that the fingerprint module is abnormal. The group is powered off to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user.

In an off-screen scenario, the embodiment of the present application also provides a method for controlling a fingerprint module.

Exemplarily, FIG. 7 shows a schematic flowchart of another fingerprint module control method 700 . As shown in FIG. 7 , the method 700 may include the above S501-S506.

After S506, the method 700 also includes the following steps:

S701. It is detected that the chip identification of the chip where the fingerprint module is located has failed to be read multiple times.

S702. Perform power-off operation on the fingerprint module and then power-on operation.

The terminal device can power on the fingerprint module immediately after powering off the fingerprint module, or it can power on the fingerprint module after powering off the fingerprint module and then power on the fingerprint module. The embodiment does not limit this.

S703. Read the chip identification of the chip where the fingerprint module is located for multiple consecutive times again.

The terminal device can re-read the chip identification of the chip where the fingerprint module is located repeatedly periodically or continuously within a fixed time. The number of times the terminal device re-reads the chip identification of the chip where the fingerprint module is located can be called the second preset number of times, which is preset in the terminal device after being calibrated by the developer. The second preset number of times may be 3 times, 4 times, 5 times or 6 times, etc., which is not limited in this embodiment of the present application. The second preset number of times may be the same as or different from the first preset number of times, which is not limited in this embodiment of the present application.

S704, judging whether all of the readings fail.

The terminal device judges whether reading fails every time.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located six times consecutively, the terminal device can determine whether all the six reads fail.

If the terminal device fails to read every time, the terminal device may execute S706. If the terminal device does not fail to read every time, that is, there is at least one successful read, the terminal device may execute S705.

S705. If none of them fail to be read, the terminal device may determine that the fingerprint module is normal.

If the terminal device does not fail to read every time, it can indicate that the fingerprint module is normal, and the terminal device can determine that the fingerprint module is normal.

For example, if the terminal device reads the chip identification of the chip where the fingerprint module is located six times consecutively, and not all of the six reads fail, the terminal device can determine that the fingerprint module is normal.

S706. If all readings fail, the terminal device may determine that the fingerprint module is abnormal.

If the terminal device fails to read every time, it can indicate that the fingerprint module is abnormal, and the terminal device can determine that the fingerprint module is abnormal, and can power off the fingerprint module.

Exemplarily, if the terminal device reads the chip identification of the chip where the fingerprint module is located six times consecutively, and fails to read all six times, the terminal device may determine that the fingerprint module is abnormal.

In the control method of the fingerprint module provided by the embodiment of the present application, when the display screen is off, if reading fails for many times, the fingerprint module can be powered off and then powered on to judge whether it can be read again. Get the chip ID of the chip where the fingerprint module is located, and when re-reading fails, it is determined that the fingerprint module is abnormal, which helps reduce the risk of misjudgment.

In the above method 300, method 500 and method 700, the terminal device reads the chip identification of the chip where the fingerprint module is located multiple times consecutively, and judges whether the fingerprint module is abnormal based on the results of these multiple times. This is only a possible realization Way. The embodiment of the present application also provides another possible implementation mode. After the terminal device reads the chip identification of the chip where the fingerprint module is located, it judges whether the reading fails; if the reading fails, the terminal device judges whether the number of consecutive reading failures exceeds The first preset number of times; if the number of consecutive reading failures does not exceed the first preset number of times, the terminal device can re-read the chip identification of the chip where the fingerprint module is located, and re-judge whether the reading is successful. If the number of consecutive reading failures exceeds the first preset number, the terminal device may determine that the fingerprint module is abnormal. It can be understood that if the terminal device can read successfully, the terminal device determines that the fingerprint module is normal.

As an optional embodiment, the above-mentioned method 300, method 500 or method 700 may also include: if the terminal device reads the overcurrent protection interruption flag, the terminal device determines that the fingerprint module is damaged at the first level; or, if the terminal device If the overcurrent protection interrupt flag is not read, the terminal device determines that the fingerprint module is damaged at the second level, and the damage level of the second level damage is higher than that of the first level damage.

In the existing hardware detection scheme, as shown in FIG. 1 above, when the input current of the fingerprint module is too large, the terminal device can generate an overcurrent protection interrupt flag and write it into the register. In the method provided in the embodiment of the present application, the terminal device determines that the fingerprint module is abnormal, and if the terminal device also reads the overcurrent protection interrupt flag in the register, the terminal device can determine that the fingerprint module is damaged at the first level. The terminal device determines that the fingerprint module is abnormal, and if the terminal device does not read the overcurrent protection interrupt flag in the register, the terminal device can determine that the fingerprint module is damaged at the second level.

The control method of the fingerprint module provided by the embodiment of the present application can determine the damage degree of the fingerprint module by whether the over-current protection interruption mark is read on the basis of not reading the chip identification to determine the abnormality of the fingerprint module, Information can be provided for follow-up maintenance, which is conducive to improving the efficiency of follow-up maintenance.

The method provided by the embodiment of the present application may be executed by a power management module, a display driver, a fingerprint driver, an abnormal identification module of a fingerprint module, and a fingerprint processing module in a terminal device.

Exemplarily, FIG. 8 shows a schematic flowchart of a fingerprint module control method 800 . As shown in FIG. 8, the method 800 may include the following steps:

S801. The display driver detects that the display screen is in a bright screen state.

When the display screen is on, the user can enter fingerprint information, that is, save the fingerprint information.

S802. The abnormal identification module of the fingerprint module obtains the fingerprint information of the user through the fingerprint module.

When there is no abnormality in the fingerprint module, the user's fingerprint information can be collected. After the fingerprint information is collected by the fingerprint module, it can be sent to the abnormal identification module of the fingerprint module. Correspondingly, the abnormal identification module of the fingerprint module can receive the fingerprint information of the user.

S803. The abnormal identification module of the fingerprint module sends the fingerprint information of the user to the fingerprint processing module, and correspondingly, the fingerprint processing module receives the fingerprint information of the user.

The fingerprint processing module is used to process the fingerprint information, and the abnormal identification module of the fingerprint module sends the user's fingerprint information to the fingerprint processing module to process the user's fingerprint information.

S804. The fingerprint processing module records the fingerprint information based on the fingerprint information.

The fingerprint processing module can record the received fingerprint information based on the user's input operation, that is, save the user's fingerprint information in response to the operation.

S805. The fingerprint processing module returns the entry result to the abnormal identification module of the fingerprint module.

The entry result is entry success or entry failure. The fingerprint processing module returns the input result to the abnormal identification module of the fingerprint module, so that the result can be fed back to the user, and the user can understand the progress of the input and improve the user experience.

S806. The display driver detects that the fingerprint module is in a dormant state.

S807. The display driver sends wake-up indication information to the fingerprint module abnormal identification module, and correspondingly, the fingerprint module abnormal identification module receives the wake-up indication information, and the wake-up indication information is used to instruct the fingerprint module abnormal identification module to wake up the fingerprint module .

S808. The fingerprint module abnormal identification module wakes up the fingerprint module based on the wakeup indication information.

S809. The display driver sends the indication information for reading the chip identification to the abnormal identification module of the fingerprint module. Correspondingly, the abnormal identification module of the fingerprint module receives the indication information for reading the chip identification, and the indication information for reading the chip identification is used to indicate The fingerprint module abnormal identification module reads the chip identification of the chip where the fingerprint module is located.

S810. The abnormal identification module of the fingerprint module creates a thread for reading the chip ID based on the indication information for reading the chip ID.

The abnormal recognition module of the fingerprint module can independently create a thread based on the indication information of reading the chip identification, which is specially used to read the chip identification of the chip where the fingerprint module is located.

In this implementation mode, a separate thread is created for reading the chip identification, and other running threads of the terminal device in the bright screen state may not be changed, which is beneficial to the normal operation of the terminal device.

S811. The abnormal identification module of the fingerprint module runs a thread for reading the chip identification, and obtains an operation result.

The abnormal identification module of the fingerprint module reads the chip identification of the chip where the fingerprint module is located by running the thread for reading the chip identification. If the chip identification is read, the operation result may be reading success; if the chip identification is not read, the operation result may be reading failure.

If the reading is successful, it can indicate that the fingerprint module is normal. If the reading fails, it may indicate that there may be an abnormality in the fingerprint module.

S812. If the operation result is reading failure, the abnormal identification module of the fingerprint module determines whether the number of consecutive reading failures is greater than or equal to the first preset number.

The first preset number of times may be 3 times, but this embodiment of the present application is not limited thereto.

If the operation result is read failure, the fingerprint module abnormal identification module judges that the number of read failures is greater than or equal to the first preset number of times, if the number of read failures is less than the first preset number of times, the fingerprint module abnormal identification module can continue Run the thread used to read the chip identification and get the running result. If the running result is reading failure, the abnormal identification module of the fingerprint module continues to judge whether the number of consecutive reading failures is greater than or equal to the first preset number of times until the continuous reading fails. The number of fetch failures is greater than or equal to the first preset number of times.

If the operation result is that the reading is successful, the abnormal identification module of the fingerprint module can determine that the fingerprint module has no abnormality.

S813. If the number of consecutive reading failures is greater than or equal to the first preset number of times, the abnormal identification module of the fingerprint module sends power-off instruction information to the fingerprint driver module. Correspondingly, the fingerprint driver module receives the power-off instruction information, and the power-off instruction information is The power indication module is used to instruct the power management module to power off the fingerprint module.

If the number of consecutive reading failures is greater than or equal to the first preset number of times, the fingerprint module abnormal identification module may determine that the fingerprint module is abnormal, and send power-off instruction information to the fingerprint driver module.

S814. The fingerprint driver module sends the power-off instruction information to the power management module. Correspondingly, the power management module receives the power-off instruction information, and performs a power-off operation on the fingerprint module based on the power-off instruction information.

In the control method of the fingerprint module provided by the embodiment of the present application, when the display screen is bright, a new thread is created to read the identification of the chip where the fingerprint module is located. If the number of consecutive reading failures is greater than or equal to the first preset number of times, then Determine that the fingerprint module is abnormal, and power off the fingerprint module to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user.

FIG. 9 shows a schematic flowchart of another fingerprint module control method 900 . As shown in FIG. 9, the method 900 may include the following steps:

S901. The display driver detects that the display screen is in an off-screen state.

When the display screen is in an off state, the terminal device is in a state of low power consumption.

S902. The abnormal identification module of the fingerprint module acquires the fingerprint information of the user through the fingerprint module.

When there is no abnormality in the fingerprint module, the user's fingerprint information can be collected. After the fingerprint information is collected by the fingerprint module, it can be sent to the abnormal identification module of the fingerprint module. Correspondingly, the abnormal identification module of the fingerprint module can receive the fingerprint information of the user.

S903. The abnormal identification module of the fingerprint module sends the fingerprint information of the user to the fingerprint processing module, and correspondingly, the fingerprint processing module receives the fingerprint information of the user.

The fingerprint processing module is used to process the fingerprint information, and the abnormal identification module of the fingerprint module sends the user's fingerprint information to the fingerprint processing module to process the user's fingerprint information.

S904. The fingerprint processing module verifies the fingerprint information based on the fingerprint information.

When the display screen is in the off-screen state, the user can unlock the display screen with a fingerprint to use the terminal device.

The fingerprint processing module can verify the received fingerprint information based on the user's unlocking operation in response to the operation, so as to determine whether to unlock.

Exemplarily, the fingerprint processing module may perform operations such as preprocessing fingerprint information, extracting features, and performing matching based on features.

S905. The fingerprint processing module returns a verification result to the abnormal identification module of the fingerprint module.

The verification result is verification success or verification failure. The fingerprint processing module returns the verification result to the abnormal identification module of the fingerprint module, so as to feed back the result to the user, and understand the verification progress with the user, so as to improve user experience.

S906. The display driver detects that the fingerprint module does not record fingerprint information and is in a dormant state.

The display driver can detect whether the fingerprint module has recorded fingerprint information, and can also detect the state of the fingerprint module. If the fingerprint module has no fingerprint information recorded and is in a dormant state, the display driver can detect that the fingerprint module has no fingerprint information recorded and is in a dormant state.

S907. The display driver sends wake-up indication information to the fingerprint module abnormal identification module, and correspondingly, the fingerprint module abnormal identification module receives the wake-up indication information, and the wake-up indication information is used to instruct the fingerprint module abnormal identification module to wake up the fingerprint module .

S908. The fingerprint module abnormal identification module wakes up the fingerprint module based on the wakeup indication information.

S909. The display driver sends the indication information for reading the chip identification to the abnormal identification module of the fingerprint module. Correspondingly, the abnormal identification module of the fingerprint module receives the indication information for reading the chip identification, and the indication information for reading the chip identification is used to indicate The fingerprint module abnormal identification module reads the chip identification of the chip where the fingerprint module is located.

S910. The abnormal identification module of the fingerprint module reads the chip identification based on the indication information for reading the chip identification.

In the off-screen state, the abnormal identification module of the fingerprint module does not need to create a new thread to read the chip identification. Developers can add the code to read the chip identification in the existing thread, and preset it with the terminal device. When the abnormality identification module of the fingerprint module receives the instruction information for reading the chip identification, it runs the code for reading the chip identification based on the instruction information for reading the chip identification. power consumption mode.

S911. If the reading fails, the abnormal identification module of the fingerprint module judges whether the number of consecutive reading failures is greater than or equal to a first preset number of times.

The first preset number of times may be 3 times, but this embodiment of the present application is not limited thereto.

If the operation result is read failure, the fingerprint module abnormal identification module judges that the number of read failures is greater than or equal to the first preset number of times, if the number of read failures is less than the first preset number of times, the fingerprint module abnormal identification module can continue Read chip ID. If the reading fails, the abnormal identification module of the fingerprint module judges whether the number of consecutive reading failures is greater than or equal to the first preset number of times until the number of consecutive reading failures is greater than or equal to the first preset number of times.

If the operation result is that the reading is successful, the abnormal identification module of the fingerprint module can determine that the fingerprint module has no abnormality.

S912. If the number of reading failures is greater than or equal to the first preset number of times, the fingerprint module abnormal identification module sends power-off instruction information to the fingerprint driver module, and correspondingly, the fingerprint driver module receives the power-off instruction information, and the power-off instruction information is The indication module is used to instruct the power management module to power off the fingerprint module.

If the number of consecutive reading failures is greater than or equal to the first preset number of times, the fingerprint module abnormal identification module can roughly determine that the fingerprint module is abnormal, and send a power-off instruction message to the fingerprint driver module.

S913. The fingerprint driver module sends the power-off instruction information to the power management module. Correspondingly, the power management module receives the power-off instruction information, and performs a power-off operation on the fingerprint module based on the power-off instruction information.

S914. The fingerprint module abnormal identification module sends power-on instruction information to the fingerprint driver module, and correspondingly, the fingerprint driver module receives the power-on instruction information, and the power-on instruction module is used to instruct the power management module to power on the fingerprint module operate.

In order to ensure that the fingerprint module is indeed abnormal, the abnormal identification module of the fingerprint module can send a power-on instruction message to instruct the power management module to perform power-on operation on the fingerprint module, and can judge whether it can be successfully read again, so as to improve the recognition accuracy .

S915. The fingerprint driver module sends the power-on instruction information to the power management module. Correspondingly, the power management module receives the power-on instruction information, and performs a power-on operation on the fingerprint module based on the power-on instruction information.

S916. The abnormal identification module of the fingerprint module reads the chip identification again.

S917. If the reading fails, the abnormal identification module of the fingerprint module judges whether the number of consecutive reading failures is greater than or equal to the second preset number of times.

The first preset number of times may be 6 times, but this embodiment of the present application is not limited thereto.

If the operation result is read failure, the fingerprint module abnormal identification module judges that the number of read failures is greater than or equal to the second preset number of times, if the number of read failures is less than the second preset number of times, the fingerprint module abnormal identification module can continue Read chip ID. If the reading fails, the abnormal identification module of the fingerprint module judges whether the number of consecutive reading failures is greater than or equal to the second preset number of times until the number of consecutive reading failures is greater than or equal to the second preset number of times.

S918. If the number of consecutive reading failures is greater than or equal to the second preset number of times, the abnormal identification module of the fingerprint module sends power-off instruction information to the fingerprint driver module, and correspondingly, the fingerprint driver module receives the power-off instruction information, and the power-off instruction information is The power indication module is used to instruct the power management module to power off the fingerprint module.

If the number of consecutive reading failures is greater than or equal to the second preset number of times, the fingerprint module abnormal identification module may determine that the fingerprint module is abnormal, and send power-off instruction information to the fingerprint driver module.

S919. The fingerprint driver module sends the power-off instruction information to the power management module. Correspondingly, the power management module receives the power-off instruction information, and performs a power-off operation on the fingerprint module based on the power-off instruction information.

The fingerprint module control method provided by the embodiment of the present application reads the identification of the chip where the fingerprint module is located when the display screen is off, and if the number of consecutive reading failures is greater than or equal to the first preset number of times, the fingerprint is determined. If the module is abnormal, power off the fingerprint module to prevent the temperature of the fingerprint module from rising and reduce the risk of scalding the user. In addition, in the embodiment of the present application, after the fingerprint module is powered off and then powered on again, it can be judged again whether the chip identification of the chip where the fingerprint module is located can be read. If the number of consecutive reading failures is greater than or equal to the second preset The number of times determines that the fingerprint module is abnormal, which can improve the recognition accuracy and help reduce the risk of misjudgment.

The sequence numbers of the processes in the above embodiments do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method provided by the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 9 , and the device provided by the embodiment of the present application will be described in detail below in conjunction with FIG. 10 and FIG. 11 .

Fig. 10 shows a schematic block diagram of a fingerprint module control device 1000 provided by an embodiment of the present application. The control device 1000 of the fingerprint module includes: a reading module 1010 and a processing module 1020 . Among them, the reading module 1010 is used to: read the chip identification of the chip where the fingerprint module is located; the processing module 1020 is used to: if the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, then perform Power off operation.

Optionally, the reading module 1010 is further configured to read the chip identification if the display screen of the control device 1000 is in the bright state and the fingerprint module is in the entry state, authentication state, cancellation state or idle state.

Optionally, if the display screen of the control device 1000 is in a bright state and the fingerprint module is in a dormant state, wake up the fingerprint module; the reading module 1010 is also used for: reading the chip identification.

Optionally, the reading module 1010 is further configured to read the chip identification if the display screen of the control device 1000 is off and the fingerprint module stores fingerprint information.

Optionally, the above-mentioned reading module 1010 is also used to: if the display screen of the above-mentioned control device 1000 is off, the fingerprint module does not store fingerprint information, and the fingerprint module is in an idle state, read the chip where the fingerprint module is located. chip ID.

Optionally, the processing module 1020 is further configured to wake up the fingerprint module if the display screen of the control device 1000 is off, the fingerprint module does not store fingerprint information, and the fingerprint module is in a dormant state; Module 1010 is also used for: reading chip identification.

Optionally, the above-mentioned processing module 1020 is also used for: powering on the fingerprint module; the above-mentioned reading module 1010 is also used for: re-reading the chip identification; the processing module 1020 is also used for: if reading the chip identification fails continuously If the number of times is greater than or equal to the second preset number of times, the fingerprint module is powered off, and the second preset number of times is greater than or equal to the first preset number of times.

It should be understood that the control device 1000 here is embodied in the form of functional modules. The term "module" herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group of processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the control device 1000 may specifically be the terminal device in the above method embodiment, or the functions of the terminal device in the above method embodiment may be integrated in the control device 1000 to control Apparatus 1000 may be configured to execute various processes and/or steps corresponding to the terminal device in the foregoing method embodiments, and details are not repeated here to avoid repetition.

The above-mentioned control device 1000 has the function of realizing the corresponding steps executed by the terminal device in the above-mentioned method embodiment; the above-mentioned functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the control device 1000 in FIG. 10 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).

Fig. 11 is a schematic block diagram of another fingerprint module control device 1100 provided by an embodiment of the present application. The control device 1100 includes: a processor 1110 , a transceiver 1120 and a memory 1130 . Wherein, the processor 1110, the transceiver 1120 and the memory 1130 communicate with each other through an internal connection path, the memory 1130 is used to store instructions, and the processor 1110 is used to execute the instructions stored in the memory 1130 to control the transceiver 1120 to send signals and /or to receive a signal.

It should be understood that the control device 1100 may specifically be the terminal device in the above method embodiment, or the functions of the terminal device in the above method embodiment may be integrated in the control device 1100, and the control device 1100 may be used to execute the above method embodiment and Each step and/or process corresponding to the terminal device. Optionally, the memory 1130 may include a read-only memory and a random access memory, and provides instructions and data to the control device 1100 . A portion of memory 1130 may also include non-volatile random access memory. For example, memory 1130 may also store device type information. The processor 1110 may be configured to execute instructions stored in the memory 1130, and when the processor 1110 executes the instructions, the processor 1110 may execute various steps and/or processes corresponding to the terminal device in the foregoing method embodiments.

It should be understood that, in the embodiment of the present application, the processor 1110 may be a central processing unit (central processing unit, CPU), and the processor 1110 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits ( ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

The present application also provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program is used to implement the method corresponding to the terminal device in the foregoing method embodiments.

The present application also provides a chip system, which is used to support the terminal device in the foregoing method embodiment to realize the functions shown in the embodiment of the present application.

The present application also provides a computer program product, which includes a computer program (also referred to as code, or instruction). When the computer program is run on a computer, the computer can execute the method shown in the above method embodiments. The method corresponding to the terminal device.

Those skilled in the art can appreciate that the modules and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device, and module can refer to the corresponding process in the foregoing method embodiment, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

The above is only the specific implementation of the application, but the protection scope of the embodiment of the application is not limited thereto, and any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed in the embodiment of the application Or replacement, should be covered within the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims (10)

1. A control method for a fingerprint module, characterized in that it is applied to a terminal device, and the method comprises: The terminal device reads the chip identification of the chip where the fingerprint module is located; If the number of consecutive failures to read the chip identification is greater than or equal to the first preset number of times, the terminal device powers off the fingerprint module. 2. The method according to claim 1, wherein the terminal device reads the chip identification of the chip where the fingerprint module is located, comprising: If the display screen of the terminal device is in a bright screen state, and the fingerprint module is in an entry state, an authentication state, a cancellation state or an idle state, then the terminal device reads the chip identification. 3. The method according to claim 1 or 2, wherein the terminal device reads the chip identification of the chip where the fingerprint module is located, comprising: If the display screen of the terminal device is in a bright state and the fingerprint module is in a dormant state, the terminal device first wakes up the fingerprint module, and then reads the chip identification. 4. The method according to any one of claims 1 to 3, wherein the terminal device reads the chip identification of the chip where the fingerprint module is located, comprising: If the display screen of the terminal device is in an off-screen state and the fingerprint module stores fingerprint information, the terminal device reads the chip identification. 5. The method according to any one of claims 1 to 4, wherein the terminal device reads the chip identification of the chip where the fingerprint module is located, comprising: If the display screen of the terminal device is in an off-screen state, the fingerprint module does not store fingerprint information, and the fingerprint module is in an idle state, the terminal device reads the chip identification. 6. The method according to any one of claims 1 to 5, wherein the terminal device reads the chip identification of the chip where the fingerprint module is located, comprising: If the display screen of the terminal device is in the off-screen state, the fingerprint module does not store fingerprint information and the fingerprint module is in a dormant state, the terminal device first wakes up the fingerprint module, and then reads the The above chip ID. 7. The method according to any one of claims 4 to 6, wherein the method further comprises: The terminal device performs power-on operation on the fingerprint module; The terminal device re-reads the chip identification; If the number of consecutive failures to read the chip identification is greater than or equal to the second preset number of times, the terminal device will power off the fingerprint module, and the second preset number of times is greater than or equal to the first preset number of times. frequency. 8. A control device for a fingerprint module, comprising: a processor and a memory; the memory stores computer-executable instructions; The processor executes the computer-implemented instructions stored in the memory, causing the control device to perform the method according to any one of claims 1-7. 9. A computer-readable storage medium, the computer-readable storage medium stores a computer program, characterized in that, when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented . 10. A computer program product, characterized in that it comprises a computer program, and when the computer program is run, causes the computer to execute the method according to any one of claims 1 to 7.