CN111476071B - Fingerprint identification method and device - Google Patents
Fingerprint identification method and device Download PDFInfo
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- CN111476071B CN111476071B CN201910069074.3A CN201910069074A CN111476071B CN 111476071 B CN111476071 B CN 111476071B CN 201910069074 A CN201910069074 A CN 201910069074A CN 111476071 B CN111476071 B CN 111476071B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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Abstract
The disclosure relates to fingerprint identification method and device. The method comprises the following steps: when a pressing operation on a screen of the terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is located; determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness; the control screen displays the fingerprint bright spots by using the fingerprint bright spot brightness; the user fingerprint corresponding to the pressing operation is identified by calling an on-screen fingerprint sensor. According to the technical scheme, the ambient light brightness of the environment where the terminal is located is obtained, the fingerprint bright spot brightness of the screen is dynamically determined according to the ambient light brightness, the problems of high light leakage and low fingerprint identification efficiency caused by the adoption of a fixed brightness value in the related art can be avoided, the user comfort level can be improved, the user can use the device conveniently, and the user experience is improved.
Description
Technical Field
The disclosure relates to the technical field of terminals, and in particular relates to a fingerprint identification method and device.
Background
The under-screen optical fingerprint identification refers to a principle that an Organic Light-Emitting Diode (OLED) screen can emit Light, a fingerprint sensor is arranged below the OLED screen of the terminal, the fingerprint is irradiated by utilizing Light of the OLED screen, and then a fingerprint image with high contrast and clear black and white is formed by utilizing the principle of total reflection and diffuse reflection, so that information acquisition and matching identification on the user fingerprint are realized through the screen. Compared with the traditional fingerprint identification technology, the under-screen optical fingerprint identification has the greatest advantage that the under-screen optical fingerprint identification does not occupy the screen space and does not influence the appearance of the terminal.
In the related art, a user's finger presses an effective area of a fingerprint under a screen of a terminal, so that a fingerprint identification process can be awakened.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a fingerprint identification method and apparatus. The technical scheme is as follows:
according to a first aspect of an embodiment of the present disclosure, there is provided a fingerprint identification method, including:
when a pressing operation on a screen of a terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is positioned;
determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness;
controlling the screen to display fingerprint bright spots by using the fingerprint bright spot brightness;
and calling the off-screen fingerprint sensor to identify the user fingerprint corresponding to the pressing operation.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: according to the technical scheme, the ambient light brightness of the environment where the terminal is located is obtained, and the fingerprint bright spot brightness of the screen is dynamically determined according to the ambient light brightness, so that the fingerprint bright spot brightness can be dynamically adapted to the diversity of the environment where the terminal is located, the problems of high bright light leakage and low fingerprint identification efficiency caused by the adoption of a fixed brightness value in the related technology are avoided, the user comfort level can be improved, the user can conveniently use the device, and the user experience is improved.
In one embodiment, in the first mapping relationship, the greater the ambient light level, the greater the brightness of the mapped fingerprint speckle.
In one embodiment, the method further comprises:
determining the exposure time length of the under-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation of the ambient light brightness and the exposure time length, which is obtained in advance;
and controlling the under-screen fingerprint sensor to expose by using the exposure time.
In one embodiment, when a pressing operation on a screen of a terminal is detected, acquiring the ambient light level of the environment in which the terminal is located includes:
when a pressing operation for a screen of a terminal is detected, acquiring a pressure value of the pressing operation;
when the pressure value is larger than a preset pressure threshold value, acquiring the ambient light brightness of the environment where the terminal is positioned; the preset pressure threshold is a preset critical value used for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
In one embodiment, the acquiring the environmental light brightness of the environment where the terminal is located includes:
and calling an ambient light sensor of the terminal to measure and obtain the ambient light brightness of the environment where the terminal is positioned.
According to a second aspect of embodiments of the present disclosure, there is provided a fingerprint identification device, comprising:
an acquisition module, configured to acquire an ambient light level of an environment in which a terminal is located when a pressing operation on a screen of the terminal is detected;
the first determining module is used for determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness;
the first control module is used for controlling the screen to display fingerprint bright spots by using the fingerprint bright spot brightness;
and the identification module is used for calling the under-screen fingerprint sensor to identify the user fingerprint corresponding to the pressing operation.
In one embodiment, in the first mapping relationship, the greater the ambient light level, the greater the brightness of the mapped fingerprint speckle.
In one embodiment, the apparatus further comprises:
the second determining module is used for determining the exposure time length of the under-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation between the ambient light brightness and the exposure time length, which is obtained in advance;
and the second control module is used for controlling the under-screen fingerprint sensor to expose by using the exposure time length.
In one embodiment, the acquisition module includes:
a first acquisition sub-module for acquiring a pressure value of a pressing operation for a screen of a terminal when the pressing operation is detected;
the second obtaining submodule is used for obtaining the ambient light brightness of the environment where the terminal is located when the pressure value is larger than a preset pressure threshold value; the preset pressure threshold is a preset critical value used for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
In one embodiment, the obtaining module invokes an ambient light sensor of the terminal to measure the ambient light level of the environment in which the terminal is located.
According to a third aspect of embodiments of the present disclosure, there is provided a fingerprint identification device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the method according to any of the embodiments of the first aspect described above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method of any of the embodiments of the first aspect described above.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a fingerprint recognition method according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a fingerprint recognition method according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating a fingerprint recognition method according to an exemplary embodiment.
Fig. 4 is a block diagram of a fingerprint recognition device, according to an exemplary embodiment.
Fig. 5 is a block diagram of a fingerprint recognition device, according to an exemplary embodiment.
Fig. 6 is a block diagram of a fingerprint recognition device, according to an exemplary embodiment.
Fig. 7 is a block diagram of an apparatus according to an example embodiment.
Fig. 8 is a block diagram of an apparatus according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
In the related art, when a finger of a user presses an effective area of the fingerprint under the screen, a fingerprint identification process can be awakened; however, in the related art, the screen displays the fingerprint bright spots based on the default brightness value, however, due to the diversity of environments in which the terminal is located, the fixed brightness value is not suitable for all fingerprint identification scenes, for example, when the terminal is in a dark environment, a finger cannot accurately press the effective area of the fingerprint under the screen, so that the finger cannot completely shade the bright spots, and the bright light leakage is caused, and the bright light leakage can have short-term influence on the eyesight of a user, such as eye pricking feeling or vision residual bright spots, and the comfort level of the user is reduced; for another example, when the terminal is in a strong light environment, the user may not see the pressing area prompted by the terminal clearly, so that the fingerprint recognition efficiency is low, great inconvenience is brought to the user, and the user experience is affected.
In order to solve the above-mentioned problems, an embodiment of the present disclosure provides a fingerprint identification method that can be applied to a terminal provided with an off-screen fingerprint sensor below a screen, the method including the steps of: when a pressing operation on a screen of the terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is located; determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness; the control screen displays the fingerprint bright spots by using the fingerprint bright spot brightness; the user fingerprint corresponding to the pressing operation is identified by calling an on-screen fingerprint sensor. According to the technical scheme, the environment light brightness of the environment where the terminal is located is obtained, and the fingerprint bright spot brightness of the screen is dynamically determined according to the environment light brightness, so that the fingerprint bright spot brightness can dynamically adapt to the diversity of the environment where the terminal is located, the problems of high light leakage and low fingerprint identification efficiency caused by the adoption of fixed brightness values in related technologies are avoided, the user comfort level can be improved, the user can conveniently use the device, and the user experience is improved.
It should be noted that, the terminal related to the technical scheme may include, for example, an electronic device such as a smart phone, a tablet computer, a notebook computer, or a wearable device (such as a bracelet).
Fig. 1 is a flowchart illustrating a fingerprint recognition method, an execution subject of which may be a terminal, applied to a terminal that sets an under-screen fingerprint sensor under a screen, according to an exemplary embodiment, as shown in fig. 1, the method includes the following steps 101 to 104:
in step 101, when a pressing operation for a screen of a terminal is detected, the ambient light level of the environment in which the terminal is located is acquired.
For example, when the user needs to use the terminal and the terminal is in a locked state, the user presses a preset fingerprint area of the screen with a finger. When the terminal detects a pressing operation on a screen of the terminal, the terminal acquires the ambient light brightness of the environment in which the terminal is located. For example, when the terminal detects a pressing operation of a user on a preset fingerprint area of the screen by means of the screen and/or the pressure sensor, the terminal invokes an ambient light sensor of the terminal to measure and obtain the ambient light brightness of the environment where the terminal is located; for example, the screen and/or pressure sensor determines whether the finger is pressed within a preset fingerprint area: if the finger is pressed in the preset fingerprint area, the ambient light sensor of the terminal is called to measure ambient light, and a host, a screen and an under-screen fingerprint sensor of the terminal are awakened; if the fact that the finger is not pressed in the preset fingerprint area is judged, the terminal is in the screen locking state continuously, and the fingerprint identification process is not triggered.
In step 102, the fingerprint brightness of the screen is determined according to the ambient light level and the first mapping relationship between the ambient light level and the fingerprint brightness obtained in advance.
For example, when the fingerprint identification process is awakened, the screen will light a lighting area located in a preset fingerprint area, the lighting area is a fingerprint bright spot, and the fingerprint bright spot brightness refers to the brightness of the lighting area of the screen.
The terminal obtains a first mapping relation between the ambient light brightness and the fingerprint bright spot brightness in advance, wherein in the first mapping relation, different fingerprint bright spot brightness corresponding to different ambient light brightness respectively is recorded. After the terminal obtains the ambient light level of the environment, the fingerprint brightness spot brightness corresponding to the ambient light level can be determined by inquiring the first mapping relation.
Optionally, in the first mapping relation, the greater the ambient light brightness is, the greater the brightness of the mapped fingerprint bright spots is, so that when the ambient light is stronger, the exposure time is reduced, the brightness of the bright spots is improved, the pressing position is prompted, and the user can conveniently perform fingerprint resolution; when the ambient light brightness is reduced, the mapped exposure time is increased, and the fingerprint brightness is reduced, so that the exposure time is prolonged, the brightness of the brightness spots is reduced, the short-term influence of light leakage on the vision is reduced, and the comfort level of a user is improved.
For example, when a pressing operation for a screen of a terminal is detected, a pressure value of the pressing operation is acquired; when the pressure value is larger than a preset pressure threshold value, acquiring the ambient light brightness of the environment where the terminal is positioned; the preset pressure threshold is a preset critical value for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located. By setting the preset pressure threshold and judging the relation between the pressure value and the preset pressure threshold, the ambient light brightness of the environment where the terminal is positioned can be measured and fingerprint identification can be carried out only when the pressure value is larger than the preset pressure threshold, so that misoperation of a user is avoided.
In step 103, the control screen displays the fingerprint bright spots using the fingerprint bright spot brightness.
For example, after determining the fingerprint brightness of the screen according to the ambient light level, the terminal controls the screen to display the fingerprint brightness using the fingerprint brightness.
In step 104, an on-screen fingerprint sensor is invoked to identify a user fingerprint corresponding to the press operation.
According to the technical scheme provided by the embodiment of the disclosure, the environment light brightness of the environment where the terminal is located is obtained, and the fingerprint bright spot brightness of the screen is dynamically determined according to the environment light brightness, so that the fingerprint bright spot brightness can dynamically adapt to the diversity of the environment where the terminal is located, the problems of high light leakage and low fingerprint identification efficiency caused by adopting a fixed brightness value in the related technology are avoided, the user comfort level can be improved, the user can conveniently use the device, and the user experience is improved.
Fig. 2 is a flowchart of a fingerprint identification method according to an exemplary embodiment, in which the execution subject of the fingerprint identification method may be a terminal, and the fingerprint identification method shown in fig. 2 may include the following steps 201 to 205, where a portion of the embodiment that is not described in detail may refer to a corresponding description of the embodiment of fig. 1:
in step 201, when a pressing operation for a screen of the terminal is detected, the ambient light level of the environment in which the terminal is located is acquired.
In step 202, the fingerprint brightness of the screen is determined according to the ambient light level and the first mapping relationship between the ambient light level and the fingerprint brightness obtained in advance.
Optionally, in the first mapping relationship, the greater the ambient light intensity, the greater the mapped fingerprint speckle brightness.
In step 203, the exposure time of the fingerprint sensor under the screen of the terminal is determined according to the ambient light level and the second mapping relationship between the ambient light level and the exposure time obtained in advance.
For example, table 1 shows a table implementation based on the first mapping relationship and the second mapping relationship, see table 1:
TABLE 1
| Ambient brightness (optical Unit nit) | Exposure time (ms) | Screen brightness (optical unit n)it) |
| 600 | 40 | 600 |
| 500 | 70 | 500 |
| 400 | 100 | 400 |
| 300 | 130 | 300 |
| 200 | 170 | 200 |
| 100 | 220 | 100 |
Table 1 shows the mapping relationship between the ambient light brightness and the fingerprint speckle brightness, and the mapping relationship between the ambient light brightness and the exposure time period. For example, if the terminal is in a dim environment, such as 200nit of ambient light, the exposure time of the fingerprint sensor under the screen is adjusted to 170ms, the brightness of the fingerprint bright spots is adjusted to 200nit, and by prolonging the exposure time, the brightness of the bright spots is reduced, the short-term influence of light leakage on the vision is reduced, and the comfort level of the user is improved; if the terminal is in an outdoor strong light environment, such as the environment brightness is 600nit, the exposure time of the under-screen fingerprint sensor is adjusted to 40ms, the fingerprint bright spot brightness is adjusted to 600nit, at the moment, the screen highlights the fingerprint bright spot, the bright spot brightness is improved by reducing the exposure time, so that the pressing position is prompted, and a user can conveniently carry out fingerprint resolution.
In step 204, the control screen displays the fingerprint highlight using the fingerprint highlight luminance.
In step 205, the control on-screen fingerprint sensor uses the exposure time to expose, and invokes the on-screen fingerprint sensor to identify the user fingerprint corresponding to the pressing operation.
According to the technical scheme provided by the embodiment of the disclosure, the first mapping relation between the ambient light brightness and the fingerprint bright spot brightness and the second mapping relation between the ambient light brightness and the exposure time length are obtained in advance, and after the ambient light brightness of the environment is obtained, the terminal can determine the exposure time length and the fingerprint bright spot brightness corresponding to the ambient light brightness by inquiring the mapping relation, so that the exposure time length and the fingerprint bright spot brightness can be dynamically adapted to the diversity of the environment of the terminal, and the implementation is simple.
Fig. 3 is a flowchart of a fingerprint identification method according to an exemplary embodiment, in which the execution subject of the fingerprint identification method may be a terminal, and the fingerprint identification method shown in fig. 3 may include the following steps 301 to 306, where a portion of the embodiment that is not described in detail may refer to a corresponding description of the embodiment of fig. 1:
in step 301, when a pressing operation for a screen of a terminal is detected, a pressure value of the pressing operation is acquired.
In step 302, it is determined whether the pressure value is greater than a preset pressure threshold: when the pressure value is greater than the preset pressure threshold, go to step 303; and when the pressure value is not greater than the preset pressure threshold value, ending the flow.
In step 303, the ambient light level of the environment in which the terminal is located is obtained; the preset pressure threshold is a preset critical value for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
For example, the ambient light sensor of the terminal is invoked to measure the ambient light level of the environment in which the terminal is located.
In step 304, the exposure time of the under-screen fingerprint sensor of the terminal and the fingerprint speckle brightness of the screen are determined according to the ambient light level.
In step 305, the control screen displays the fingerprint bright spots using the fingerprint bright spot brightness.
In step 306, the on-screen fingerprint sensor is called to expose by using the exposure time length, and the user fingerprint corresponding to the pressing operation is identified.
According to the technical scheme provided by the embodiment of the disclosure, through setting the preset pressure threshold and judging the magnitude relation between the pressure value and the preset pressure threshold, the ambient light brightness of the environment where the terminal is located can be measured and fingerprint identification can be carried out only when the pressure value is larger than the preset pressure threshold, so that misoperation of a user is avoided.
The following are device embodiments of the present disclosure, which may be used to perform method embodiments of the present disclosure, and reference may be made to the method embodiments for those portions of the device embodiments that are not described in detail.
FIG. 4 is a block diagram of a fingerprint recognition device, according to an exemplary embodiment; the apparatus may be implemented in various ways, for example, implementing all components of the apparatus in a terminal, or implementing components of the apparatus in a coupled manner on the terminal side; the device may implement the method related to the disclosure by software, hardware or a combination of the two, as shown in fig. 4, where the fingerprint identification device includes: an acquisition module 401, a first determination module 402, a first control module 403, and an identification module 404, wherein:
the acquisition module 401 is configured to acquire the ambient light level of the environment in which the terminal is located when a pressing operation for a preset fingerprint area of a screen of the terminal is detected;
the first determining module 402 is configured to determine, according to the ambient light level, an exposure time period of an on-screen fingerprint sensor of the terminal and a fingerprint speckle brightness of the screen;
the first control module 403 is configured to control the screen to display the fingerprint bright spots using the fingerprint bright spot brightness;
the identification module 404 is configured to invoke the on-screen fingerprint sensor to perform exposure using the exposure time period, and identify the user fingerprint corresponding to the pressing operation.
The device provided in the embodiment of the present disclosure can be used to execute the technical solution of the embodiment shown in fig. 1, and the execution mode and the beneficial effects thereof are similar, and are not repeated here.
In one possible implementation, in the first mapping relationship, the greater the ambient light intensity, the greater the mapped fingerprint speckle brightness.
In one possible embodiment, as shown in fig. 5, the fingerprint recognition device shown in fig. 4 may further include: a second determination module 501 and a second control module 502, wherein:
the second determining module 501 is configured to determine an exposure time period of the under-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relationship between the ambient light brightness and the exposure time period, which is obtained in advance;
the second control module 502 is configured to control the on-screen fingerprint sensor to be exposed using the exposure time period.
In a possible embodiment, as shown in fig. 6, the fingerprint recognition device shown in fig. 4 may further include configuring the acquisition module 401 to include: a first acquisition sub-module 601 and a second acquisition sub-module 602, wherein:
the first acquisition sub-module 601 is configured to acquire a pressure value of a pressing operation when the pressing operation for a screen of the terminal is detected;
the second obtaining sub-module 602 is configured to obtain the ambient light brightness of the environment where the terminal is located when the pressure value is greater than a preset pressure threshold; the preset pressure threshold is a preset critical value for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
In one possible implementation, the obtaining module 401 invokes an ambient light sensor of the terminal to measure the ambient light level of the environment in which the terminal is located.
In one possible embodiment, a fingerprint recognition device is provided, which can be implemented in various ways, for example by implementing all components of the device in the terminal, or by implementing the components of the device in a coupled manner on the terminal side; the fingerprint recognition device includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when a pressing operation on a screen of the terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is located;
determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness;
the control screen displays the fingerprint bright spots by using the fingerprint bright spot brightness;
the user fingerprint corresponding to the pressing operation is identified by calling an on-screen fingerprint sensor.
In one embodiment, the processor may be further configured to: in the first mapping relationship, the higher the ambient light intensity, the higher the brightness of the mapped fingerprint bright spots.
In one embodiment, the processor may be further configured to:
determining the exposure time of an on-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation between the ambient light brightness and the exposure time, which is obtained in advance;
the under-screen fingerprint sensor is controlled to be exposed by using the exposure time.
In one embodiment, the processor may be further configured to:
when a pressing operation for a screen of the terminal is detected, acquiring a pressure value of the pressing operation;
when the pressure value is larger than a preset pressure threshold value, acquiring the ambient light brightness of the environment where the terminal is positioned; the preset pressure threshold is a preset critical value for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
In one embodiment, the processor may be further configured to: and calling an ambient light sensor of the terminal to measure and obtain the ambient light brightness of the environment where the terminal is positioned.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 7 is a block diagram of an apparatus according to an example embodiment. For example, the apparatus 700 may be a terminal, an electronic device such as a smart phone, a tablet computer, or a wearable device.
Referring to fig. 7, an apparatus 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.
The processing component 702 generally controls overall operation of the apparatus 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 720 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 702 can include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.
The memory 704 is configured to store various types of data to support operations at the apparatus 700. Examples of such data include instructions for any application or method operating on the apparatus 700, contact data, phonebook data, messages, pictures, videos, and the like. The memory 704 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 706 provides power to the various components of the device 700. The power components 706 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 700.
The multimedia component 708 includes a screen between the device 700 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 708 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the apparatus 700 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 further includes a speaker for outputting audio signals.
The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 714 includes one or more sensors for providing status assessment of various aspects of the apparatus 700. For example, the sensor assembly 714 may detect an on/off state of the device 700, a relative positioning of the assemblies, such as a display and keypad of the device 700, a change in position of the device 700 or one of the assemblies of the device 700, the presence or absence of user contact with the device 700, an orientation or acceleration/deceleration of the device 700, and a change in temperature of the device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 716 is configured to facilitate communication between the apparatus 700 and other devices in a wired or wireless manner. The apparatus 700 may access a wireless network based on a communication standard, such as WiFi,2G, 3G, 4G, or 5G, or a combination thereof. In one exemplary embodiment, the communication component 716 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 704, including instructions executable by processor 720 of apparatus 700 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
Fig. 8 is a block diagram of an apparatus according to an example embodiment. For example, the apparatus 800 may be provided as a server. The apparatus 800 includes a processing component 802 that further includes one or more processors, and memory resources represented by a memory 803 for storing instructions, such as application programs, executable by the processing component 802. The application program stored in the memory 803 may include one or more modules each corresponding to a set of instructions. Further, the processing component 802 is configured to execute instructions to perform the above-described methods.
The apparatus 800 may further comprise a power component 806 configured to perform power management of the apparatus 800, a wired or wireless network interface 805 configured to connect the apparatus 800 to a network, and an input output (I/O) interface 808. The device 800 may operate based on an operating system stored in the memory 803, such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.
A non-transitory computer readable storage medium, which when executed by a processor of apparatus 700 or apparatus 800, enables 700 or apparatus 800 to perform a method comprising:
when a pressing operation on a screen of the terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is located;
determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness;
the control screen displays the fingerprint bright spots by using the fingerprint bright spot brightness;
the user fingerprint corresponding to the pressing operation is identified by calling an on-screen fingerprint sensor.
In one embodiment, in the first mapping relationship, the greater the ambient light level, the greater the mapped fingerprint speckle brightness.
In one embodiment, the method further comprises:
determining the exposure time of an on-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation between the ambient light brightness and the exposure time, which is obtained in advance;
the under-screen fingerprint sensor is controlled to be exposed by using the exposure time.
In one embodiment, when a pressing operation on a screen of a terminal is detected, acquiring an ambient light level of an environment in which the terminal is located, includes:
when a pressing operation for a screen of the terminal is detected, acquiring a pressure value of the pressing operation;
when the pressure value is larger than a preset pressure threshold value, acquiring the ambient light brightness of the environment where the terminal is positioned; the preset pressure threshold is a preset critical value for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
In one embodiment, obtaining the ambient light level of the environment in which the terminal is located includes:
and calling an ambient light sensor of the terminal to measure and obtain the ambient light brightness of the environment where the terminal is positioned.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (6)
1. A method of fingerprint identification, comprising:
when a pressing operation on a screen of a terminal is detected, acquiring the ambient light brightness of the environment in which the terminal is positioned;
determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness; determining the exposure time length of the under-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation of the ambient light brightness and the exposure time length, which is obtained in advance; the fingerprint bright spots are used for prompting the pressing position, the higher the ambient light brightness is, the higher the fingerprint bright spots are, so that the pressing position is prompted, the shorter the exposure time is, the lower the ambient light brightness is, the bright spots are reduced, and the short-term influence of light leakage on the vision is reduced;
controlling the screen to display fingerprint bright spots by using the fingerprint bright spot brightness; controlling the under-screen fingerprint sensor to expose by using the exposure time length;
invoking the off-screen fingerprint sensor to identify the user fingerprint corresponding to the pressing operation;
when the pressing operation of the screen of the terminal is detected, the method for acquiring the ambient light brightness of the environment where the terminal is located comprises the following steps:
when a pressing operation for a screen of a terminal is detected, acquiring a pressure value of the pressing operation;
when the pressure value is larger than a preset pressure threshold value, acquiring the ambient light brightness of the environment where the terminal is positioned; the preset pressure threshold is a preset critical value used for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
2. The method of claim 1, wherein the obtaining the ambient light level of the environment in which the terminal is located comprises:
and calling an ambient light sensor of the terminal to measure and obtain the ambient light brightness of the environment where the terminal is positioned.
3. A fingerprint recognition device, comprising:
an acquisition module, configured to acquire an ambient light level of an environment in which a terminal is located when a pressing operation on a screen of the terminal is detected;
the first determining module is used for determining the fingerprint brightness of the screen according to the ambient light brightness and a first mapping relation between the ambient light brightness and the fingerprint brightness;
the first control module is used for controlling the screen to display fingerprint bright spots by using the fingerprint bright spot brightness; the fingerprint bright spots are used for prompting the pressing position, the higher the ambient light brightness is, the higher the fingerprint bright spots are, so that the pressing position is prompted, the shorter the exposure time is, the lower the ambient light brightness is, the bright spots are reduced, and the short-term influence of light leakage on the vision is reduced;
the second determining module is used for determining the exposure time length of the under-screen fingerprint sensor of the terminal according to the ambient light brightness and a second mapping relation between the ambient light brightness and the exposure time length, which is obtained in advance;
the second control module is used for controlling the under-screen fingerprint sensor to expose by using the exposure time length;
the identification module is used for calling the fingerprint sensor under the screen to identify the user fingerprint corresponding to the pressing operation;
the acquisition module comprises:
a first acquisition sub-module for acquiring a pressure value of a pressing operation for a screen of a terminal when the pressing operation is detected;
the second obtaining submodule is used for obtaining the ambient light brightness of the environment where the terminal is located when the pressure value is larger than a preset pressure threshold value; the preset pressure threshold is a preset critical value used for triggering the terminal to acquire the ambient light brightness of the environment where the terminal is located.
4. The apparatus of claim 3, wherein the acquisition module invokes an ambient light sensor of the terminal to measure an ambient light level of an environment in which the terminal is located.
5. A fingerprint recognition device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the method of any one of claims 1 to 2.
6. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the steps of the method of any of claims 1-2.
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| CN114863494A (en) * | 2021-01-20 | 2022-08-05 | 华为技术有限公司 | Screen brightness adjusting method and device and terminal equipment |
| CN113191198B (en) * | 2021-04-02 | 2024-04-26 | 北京小米移动软件有限公司 | Fingerprint identification method, fingerprint identification device, mobile terminal and storage medium |
| CN112949600A (en) * | 2021-04-07 | 2021-06-11 | Oppo广东移动通信有限公司 | Method, device, terminal and storage medium for collecting fingerprint under screen |
| CN117075791A (en) * | 2023-09-29 | 2023-11-17 | 荣耀终端有限公司 | Fingerprint light spot display method, terminal equipment and storage medium |
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