CN109558804B - Fingerprint acquisition method and related product - Google Patents
Fingerprint acquisition method and related product Download PDFInfo
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- CN109558804B CN109558804B CN201811308988.2A CN201811308988A CN109558804B CN 109558804 B CN109558804 B CN 109558804B CN 201811308988 A CN201811308988 A CN 201811308988A CN 109558804 B CN109558804 B CN 109558804B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the application discloses a fingerprint acquisition method and a related product, which are applied to electronic equipment, wherein the electronic equipment comprises an optical fingerprint identification module and a display screen, the optical fingerprint identification module is integrated below the display screen, and the method comprises the following steps: when it is detected that a user presses a display screen of the electronic equipment, controlling the display screen to refresh at a first scanning frequency, and recording a first moment when the display screen starts to refresh; calculating a second moment when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first moment; and controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range. By adopting the method and the device, the fingerprint acquisition quality can be improved.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a fingerprint acquisition method and a related product.
Background
With the widespread use of electronic devices (such as mobile phones, tablet computers, and the like), the electronic devices have more and more applications and more powerful functions, and the electronic devices are developed towards diversification and personalization, and become indispensable electronic products in the life of users.
Fingerprint identification technique also becomes electronic equipment's standard and joins in marriage the technique, along with fingerprint identification technique's development, it is the optics fingerprint identification module that is comparatively popular at present, and this optics fingerprint identification module can integrate well in the screen below, and its leading theory of operation is: utilize the display screen self to give out light, when the finger was put on the screen, the self-luminous reflection takes place when reacing the finger, the optical fingerprint identification module received the light signal of reflection, because fingerprint unevenness's line, the light absorption range is different, thereby obtain the fingerprint image of light and shade difference, however, the finger is every point, the source of its light of receiving and reflecting away is more than a pixel, probably be originated from a plurality of pixels, if 3 pixels, because the optical path is poor, thereby form the phase difference, so when three reverberation reachd the optical fingerprint identification module, not the signal stack, but the effect is opposite, bring the signal attenuation, interference has been formed, therefore, the fingerprint collection quality has been reduced.
Disclosure of Invention
The embodiment of the application provides a fingerprint acquisition method and a related product, and the fingerprint acquisition quality can be improved.
In a first aspect, an embodiment of the present application provides an electronic device, which includes a processing circuit, and an optical fingerprint identification module and a display screen connected to the processing circuit, and the optical fingerprint identification module is integrated below the display screen, wherein,
the display screen is used for refreshing at a first scanning frequency and recording a first moment when the display screen of the electronic equipment is started to be refreshed when a user is detected to press the display screen;
the processing circuit is used for calculating a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment;
the optical fingerprint identification module is used for collecting fingerprints at a second scanning frequency at the second moment to obtain a fingerprint image, and the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
In a second aspect, the present application provides a fingerprint acquisition method applied to an electronic device, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen,
the method comprises the following steps:
when the fact that a user presses a display screen of the electronic equipment is detected, controlling the display screen to refresh at a first scanning frequency, and recording a first moment when the display screen starts to refresh;
calculating a second moment when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first moment;
and controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
In a third aspect, an embodiment of the present application provides a fingerprint acquisition device, which is applied to an electronic device, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, and the device includes: a refreshing unit, a calculating unit and an acquisition unit, wherein,
the refreshing unit is used for controlling the display screen to refresh at a first scanning frequency and recording a first moment when the display screen starts to refresh when the fact that a user presses the display screen of the electronic equipment is detected;
the computing unit is used for computing a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment;
the acquisition unit is used for controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at a second moment to obtain a fingerprint image, and the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
In a fourth aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the second aspect of the embodiment of the present application.
In a fifth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the second aspect of the present application.
In a sixth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the second aspect of embodiments of the present application. The computer program product may be a software installation package.
It can be seen that the fingerprint collection method and related product described in the embodiments of the present application are applied to an electronic device, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, when it is detected that a user presses the display screen of the electronic device, the display screen is controlled to refresh at a first scanning frequency, and a first time when the display screen starts to refresh is recorded, and a second time when the display screen refreshes to an area where the optical fingerprint identification module is located is calculated according to the first time, the optical fingerprint identification module is controlled to start to collect fingerprints at a second scanning frequency at the second time, so as to obtain a fingerprint image, and a difference between the first scanning frequency and the second scanning frequency is within a preset range, so that a synchronous refresh speed of the optical fingerprint identification module and the display screen is ensured, the screen refreshes a certain pixel, and the optical fingerprint identification module reads a corresponding pixel, and thus it is ensured that a value of each optical fingerprint identification module read is a result generated by a light corresponding to other pixels, thereby avoiding light interference caused by other pixels, and improving quality of the fingerprint image.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1A is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 1B is a schematic flowchart of a fingerprint acquisition method according to an embodiment of the present application;
FIG. 1C is a schematic illustration of a region of a display screen provided in an embodiment of the present application;
FIG. 1D is a schematic illustration of an example of determining a second time provided by the present application;
FIG. 1E is a schematic diagram illustrating fingerprint image acquisition provided by an embodiment of the present application;
FIG. 1F is another schematic illustration of a fingerprint image capture provided by an embodiment of the present application;
FIG. 2 is a schematic flowchart of another fingerprint acquisition method provided in the embodiments of the present application;
FIG. 3 is a schematic flowchart of another fingerprint acquisition method provided in the embodiments of the present application;
fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;
fig. 5A is a block diagram illustrating functional units of a fingerprint acquisition apparatus according to an embodiment of the present disclosure;
FIG. 5B is a block diagram illustrating functional units of another fingerprint acquisition device according to an embodiment of the present disclosure;
FIG. 5C is a block diagram of functional units of another fingerprint acquisition device according to an embodiment of the present disclosure;
fig. 5D is a block diagram illustrating functional units of another fingerprint acquisition device according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
The electronic device related to the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices (smart watches, smart bracelets, wireless headsets, augmented reality/virtual reality devices, smart glasses), computing devices or other processing devices connected to wireless modems, and various forms of User Equipment (UE), mobile Stations (MS), terminal devices (terminal device), and the like, which have wireless communication functions. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.
The following describes embodiments of the present application in detail.
Referring to fig. 1A, fig. 1A is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device 100 includes a storage and processing circuit 110, and a sensor 170 connected to the storage and processing circuit 110, where the sensor 170 includes a camera, where:
the electronic device 100 may include control circuitry that may include storage and processing circuitry 110. The storage and processing circuit 110 may be a memory, such as a hard disk drive memory, a non-volatile memory (e.g., a flash memory or other electronically programmable read only memory used to form a solid state drive, etc.), a volatile memory (e.g., a static or dynamic random access memory, etc.), etc., and the embodiments of the present application are not limited thereto. Processing circuitry in storage and processing circuitry 110 may be used to control the operation of electronic device 100. The processing circuitry may be implemented based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, display driver integrated circuits, and the like.
The storage and processing circuitry 110 may be used to run software in the electronic device 100, such as an Internet browsing application, a Voice Over Internet Protocol (VOIP) telephone call application, an email application, a media playing application, operating system functions, and so forth. The software may be used to perform control operations such as, for example, camera-based image capture, ambient light measurement based on an ambient light sensor, proximity sensor measurement based on a proximity sensor, information display functions implemented based on status indicators such as status indicator lights of light emitting diodes, touch event detection based on a touch sensor, functions associated with displaying information on multiple (e.g., layered) display screens, operations associated with performing wireless communication functions, operations associated with collecting and generating audio signals, control operations associated with collecting and processing button press event data, and other functions in the electronic device 100, without limitation.
The electronic device 100 may include input-output circuitry 150. The input-output circuit 150 may be used to enable the electronic device 100 to input and output data, i.e., to allow the electronic device 100 to receive data from an external device and also to allow the electronic device 100 to output data from the electronic device 100 to the external device. The input-output circuit 150 may further include a sensor 170. Sensor 170 may include an ambient light sensor, a proximity sensor based on light and capacitance, an optical fingerprint recognition module, a touch sensor (e.g., based on an optical touch sensor and/or a capacitive touch sensor, where the touch sensor may be part of a touch display screen, or may be used independently as a touch sensor structure), an acceleration sensor, a camera, and other sensors, etc., the camera may be a front-facing camera or a rear-facing camera, and the optical fingerprint recognition module may be integrated below the display screen for collecting fingerprint images.
Input-output circuit 150 may also include one or more display screens, such as display screen 130. The display 130 may include one or a combination of liquid crystal display, organic light emitting diode display, electronic ink display, plasma display, display using other display technologies. The display screen 130 may include an array of touch sensors (i.e., the display screen 130 may be a touch display screen). The touch sensor may be a capacitive touch sensor formed by a transparent touch sensor electrode (e.g., an Indium Tin Oxide (ITO) electrode) array, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, and the like, and the embodiments of the present application are not limited thereto.
The electronic device 100 may also include an audio component 140. The audio component 140 may be used to provide audio input and output functionality for the electronic device 100. The audio components 140 in the electronic device 100 may include a speaker, a microphone, a buzzer, a tone generator, and other components for generating and detecting sound.
The communication circuit 120 may be used to provide the electronic device 100 with the capability to communicate with external devices. The communication circuit 120 may include analog and digital input-output interface circuits, and wireless communication circuits based on radio frequency signals and/or optical signals. The wireless communication circuitry in communication circuitry 120 may include radio-frequency transceiver circuitry, power amplifier circuitry, low noise amplifiers, switches, filters, and antennas. For example, the wireless Communication circuitry in Communication circuitry 120 may include circuitry to support Near Field Communication (NFC) by transmitting and receiving Near Field coupled electromagnetic signals. For example, the communication circuit 120 may include a near field communication antenna and a near field communication transceiver. The communications circuitry 120 may also include a cellular telephone transceiver and antenna, a wireless local area network transceiver circuitry and antenna, and so forth.
The electronic device 100 may further include a battery, power management circuitry, and other input-output units 160. The input-output unit 160 may include buttons, joysticks, click wheels, scroll wheels, touch pads, keypads, keyboards, cameras, light emitting diodes and other status indicators, and the like.
A user may input commands through input-output circuitry 150 to control the operation of electronic device 100, and may use output data of input-output circuitry 150 to enable receipt of status information and other outputs from electronic device 100.
The electronic device described above with reference to fig. 1A may be configured to implement the following functions:
the display screen is used for refreshing at a first scanning frequency and recording a first moment when the display screen of the electronic equipment is started to be refreshed when a user is detected to press the display screen;
the processing circuit is used for calculating a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment;
the optical fingerprint identification module is used for collecting fingerprints at a second scanning frequency at the second moment to obtain a fingerprint image, and the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
In one possible example, the display screen is further specifically configured to:
acquiring a pressing parameter of a user for pressing the electronic equipment;
the processing circuit is further specifically configured to:
comparing the pressing parameters with preset pressing parameters;
and confirming that the user presses the display screen of the electronic equipment when the pressing parameter is successfully compared with the preset pressing parameter.
In one possible example, the compression parameters include a degree of compression, a compression area, and a compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
in the aspect of comparing the pressing parameter with a preset pressing parameter, the processing circuit is specifically configured to:
when the pressing force degree is greater than the preset pressing force degree, determining a target pressing area located in the fingerprint acquisition area in the pressing area;
and when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
In one possible example, the processing circuit is further specifically configured to:
and determining the first scanning frequency corresponding to the pressing force according to a mapping relation between preset force and scanning frequency.
In one possible example, the ambient light sensor is configured to obtain a target ambient light brightness value;
the processing circuit is further specifically configured to:
determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters;
in the aspect of controlling the display screen to refresh at the first scanning frequency, the display screen is specifically configured to:
and refreshing according to the target display parameters and the first scanning frequency.
In one possible example, the first scanning frequency is equal to the second scanning frequency.
Referring to fig. 1B, fig. 1B is a schematic flowchart of a fingerprint acquisition method provided in an embodiment of the present application, and as shown in the drawing, the fingerprint acquisition method is applied to the electronic device shown in fig. 1A, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, and the fingerprint acquisition method includes:
101. when it is detected that a user presses a display screen of the electronic device, the display screen is controlled to be refreshed at a first scanning frequency, and a first moment when the display screen starts to be refreshed is recorded.
Wherein, in this application embodiment, electronic equipment includes optics fingerprint identification module and display screen, and optics fingerprint identification module can be integrated in the display screen below, and the display screen can be for full screen or bang screen. When the user pressed electronic equipment's display screen, the display screen can sense the specific moment that the user pressed electronic equipment's display screen, at this time, can control the display screen and refresh with first scanning frequency, and then, light electronic equipment's display screen, the first moment that the record display screen begins to refresh, concrete realization in-process, the display screen is line by line scanning, from beginning to scan until scanning optics fingerprint identification module place region, fingerprint collection is regional promptly, then need experience a period of time, though this a period of time is very brief.
102. And calculating a second moment when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first moment.
The display screen is scanned line by line, and the time for scanning each line is also fixed under the condition that the scanning frequency of the display screen is fixed, so that it is only necessary to determine which line of pixels corresponds to the start of scanning, which line of pixels corresponds to the fingerprint acquisition region, calculate the number of lines corresponding to how many lines of pixels are spaced between the two lines of pixels, and the second time = the first time + the number of lines per line of scanning time, as shown in fig. 1C, the pixels corresponding to the first time and the pixels corresponding to the second time are shown in fig. 1C, and thus, the specific time point of the second time can be calculated by using the above formula.
103. And controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
Wherein, above-mentioned preset range all can be set up by the user oneself or the system defaults, for example, preset range is (-0.00001 Hz, 0.00001 Hz), and first scanning frequency can be equal to the second scanning frequency, so, has realized that display screen and optics fingerprint identification module group synchronous scan. In the concrete realization, electronic equipment can control optics fingerprint identification module and begin to carry out fingerprint acquisition with second scanning frequency at the second moment, obtains fingerprint image, and this fingerprint image can be used to type in fingerprint template, perhaps, is used for the fingerprint unblock, does not limit here. The difference between the first scanning frequency and the second scanning frequency can approach 0.
Optionally, before the step 101, the following steps may be further included:
a1, obtaining a pressing parameter of a user for pressing the electronic equipment;
a2, comparing the pressing parameters with preset pressing parameters;
and A3, confirming that the user presses the display screen of the electronic equipment when the pressing parameter is successfully compared with the preset pressing parameter.
In this embodiment, the pressing parameter may be at least one of the following: pressing time, pressing area, pressing force degree, and the like, which are not limited herein. The pressing time is the duration of pressing the display screen, the pressing area is the pressing area of pressing the display screen, the pressing area is the specific position of pressing the display screen, and the pressing strength is the average pressing strength of pressing the display screen. In specific implementation, preset pressing parameters may be pre-stored in the electronic device, and the preset pressing parameters may be at least one of the following: pressing time, pressing area, pressing force degree, and the like, which are not limited herein. The pressing time is the duration of pressing the display screen, the pressing area is the pressing area of pressing the display screen, the pressing area is the specific position of pressing the display screen, the average pressing force electronic equipment for pressing the display screen can obtain the pressing parameters of pressing the electronic equipment by the user after the user contacts the display screen, the pressing parameters are compared with the preset pressing parameters, when the pressing parameters are compared with the preset pressing parameters successfully, the display screen of the electronic equipment is pressed by the user, therefore, the error touch prevention can be realized to a certain extent, and under the condition that the comparison of the pressing parameters and the preset pressing parameters fails, the display screen of the electronic equipment which is not pressed by the user can be confirmed.
Further optionally, the compression parameters include compression force, compression area, and compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
in the step A2, comparing the pressing parameter with a preset pressing parameter may include the following steps:
a21, when the pressing force degree is larger than the preset pressing force degree, determining a target pressing area located in the fingerprint collection area in the pressing area;
and A22, when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
Wherein, press the parameter and can include according to pressure degree, press area and press the region, correspondingly, predetermine and press the parameter and can include predetermine according to the pressure degree, predetermine press area and fingerprint collection area, and the fingerprint collection area is optics fingerprint identification module place region. Firstly, the pressing force degree can be compared with the preset pressing force degree, if the pressing force degree is greater than the preset pressing force degree, the user can be considered to press the display screen intentionally to a certain extent, the display screen is not touched by mistake, in addition, when the pressing force degree is greater than a certain threshold value, the texture details of the fingerprint can be highlighted, and further, the target pressing area located in the fingerprint collection area in the pressing area is determined, in the pressing process, because the fingerprint collection area is limited, the user is not in the pressing process, all finger parts are located in the fingerprint collection area, and possibly located in a non-fingerprint collection area, as shown in fig. 1D, fig. 1D shows that in the pressing process, a part of the pressing area can be located in the fingerprint collection area, and a part of the pressing area can be located in the non-fingerprint collection area, the display area of the display screen can include the fingerprint collection area and the non-fingerprint collection area, and has a touch detection function, and only if the pressing area is located in the fingerprint collection area, the fingerprint image can be collected. Because in practical application, sufficient fingerprint feature needs to be gathered to fingerprint identification, consequently, has certain requirement to the target area of pressing, and the target area of pressing needs to be greater than predetermineeing the area of pressing promptly, like this, can think that the parameter of pressing compares successfully with predetermineeing the parameter of pressing, so, can guarantee to possess sufficient line and detail feature in the fingerprint image of follow-up gathering.
Further optionally, the method may further include the steps of:
and determining the first scanning frequency corresponding to the pressing force according to a mapping relation between preset force and scanning frequency.
The mapping relation between preset force and scanning frequency can be prestored in the electronic device, and then the first scanning frequency corresponding to the pressing force is determined according to the mapping relation. Different according to the pressure degree, then can correspond different scanning frequency, for example, pressing the pressure degree for a short time, then the detail of fingerprint is prominent inadequately, can scan this time with lower scanning frequency, if pressing the pressure degree for a long time, then the detail of fingerprint is comparatively prominent, can scan this time with faster scanning frequency, so, to a certain extent, guaranteed fingerprint image collection quality, be favorable to the follow-up fingerprint identification that carries on.
Optionally, when it is detected that the user presses the display screen of the electronic device, the method may further include the following steps:
b1, obtaining a brightness value of target environment light;
b2, determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters;
the step of controlling the display screen to refresh at the first scanning frequency may include performing as follows:
and controlling the display screen to refresh according to the target display parameters and the first scanning frequency.
The electronic device may include an ambient light sensor, the ambient light sensor may acquire a target ambient light brightness value, a mapping relationship between a preset ambient light brightness value and a display parameter may be pre-stored in the electronic device, and then the target display parameter corresponding to the target ambient light brightness value may be determined according to the mapping relationship. The display parameter may include at least one of: display brightness, display color temperature, etc., and are not limited herein. Furthermore, can control the display screen and refresh with target display parameter and first scanning frequency, so, can be under the environment of difference, carry out the light filling for optics fingerprint identification module through the screen, help promoting fingerprint image's collection quality.
For example, in the related art, each contact point of a finger contacting a display screen may receive and reflect more than one pixel of light, and may be multiple pixels, as shown in fig. 1E, fig. 1E shows the display screen, a calibration mirror (lenses) is included below the display screen, an optical fingerprint recognition module is below the calibration mirror, and the calibration mirror can pass through direct light and absorb non-direct light, taking 3 pixels as an example, 3 pixels can emit a characteristic point of the finger, but due to an optical path difference, a phase difference is formed, so that when three reflected lights reach the optical fingerprint recognition module, signal superposition is not performed, and on the contrary, signal attenuation is caused, and signal interference is formed.
It can be seen that the fingerprint collection method described in the embodiment of the present application is applied to an electronic device, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, when it is detected that a user presses the display screen of the electronic device, the display screen is controlled to refresh at a first scanning frequency, a first time when the display screen starts to refresh is recorded, a second time when the display screen refreshes to an area where the optical fingerprint identification module is located is calculated according to the first time, the optical fingerprint identification module is controlled to start to collect a fingerprint at a second scanning frequency at the second time, so as to obtain a fingerprint image, a difference between the first scanning frequency and the second scanning frequency is within a preset range, thereby ensuring a synchronous refresh speed of the optical fingerprint identification module and the display screen, the screen refreshes a certain pixel, and the optical fingerprint identification module reads the corresponding pixel, and thus ensuring that a value of each read optical fingerprint identification module is a result generated by light corresponding to one pixel, thereby light interference caused by light emission of other pixels is improved fingerprint image quality.
Referring to fig. 2 in a manner consistent with the embodiment shown in fig. 1B, fig. 2 is a schematic flowchart of a fingerprint acquisition method provided in an embodiment of the present application, and as shown in the figure, the fingerprint acquisition method is applied to the electronic device shown in fig. 1A, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, and the fingerprint acquisition method includes:
201. and acquiring the pressing parameters of the user for pressing the electronic equipment.
202. And comparing the pressing parameters with preset pressing parameters.
203. And when the comparison between the pressing parameters and the preset pressing parameters is successful, controlling the display screen to refresh at a first scanning frequency, and recording a first moment when the display screen starts to refresh.
204. And calculating a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment.
205. And controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
For the detailed description of the steps 201 to 205, reference may be made to the corresponding steps of the fingerprint acquisition method described in the foregoing fig. 1B, which are not described herein again.
It can be seen that the fingerprint collection method described in the embodiment of the present application is applied to an electronic device, the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, obtains a pressing parameter of a user pressing the electronic device, compares the pressing parameter with a preset pressing parameter, when the pressing parameter is successfully compared with the preset pressing parameter, controls the display screen to refresh at a first scanning frequency, records a first moment when the display screen starts to refresh, calculates a second moment when the display screen refreshes to an area where the optical fingerprint identification module is located according to the first moment, controls the optical fingerprint identification module to start to collect a fingerprint at a second scanning frequency at the second moment, obtains a fingerprint image, and ensures that a difference between the first scanning frequency and the second scanning frequency is within a preset range, thereby ensuring that the optical fingerprint identification module and the display screen refresh synchronously, refreshing a certain pixel on the screen, and the optical fingerprint identification module reads a corresponding pixel, and thus ensuring that a value of each read optical fingerprint identification module is a result generated by light rays corresponding to one pixel, thereby avoiding light interference of other pixels and improving the quality of the fingerprint image.
Referring to fig. 3, fig. 3 is a schematic flow chart of a fingerprint acquisition method according to an embodiment of the present application, and as shown in the figure, the fingerprint acquisition method is applied to the electronic device shown in fig. 1A, where the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, and the fingerprint acquisition method includes:
301. and when the fact that the user presses the display screen of the electronic equipment is detected, acquiring a target environment light brightness value.
302. And determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters.
303. And controlling the display screen to refresh according to the target display parameters and the first scanning frequency, and recording the first moment when the display screen starts to refresh.
304. And calculating a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment.
305. And controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
For the detailed description of steps 301 to 305, reference may be made to the corresponding steps of the fingerprint acquisition method described in fig. 1B, which are not described herein again.
It can be seen that, in the fingerprint collecting method described in the embodiment of the present application, when it is detected that a user presses a display screen of an electronic device, when it is detected that the user presses the display screen of the electronic device, a target ambient light brightness value is obtained, a target display parameter corresponding to the target ambient light brightness value is determined according to a mapping relationship between a preset ambient light brightness value and the display parameter, the display screen is controlled to refresh at the target display parameter and a first scanning frequency, a first time when the display screen starts to refresh is recorded, a second time when the display screen refreshes to an area where an optical fingerprint identification module is located is calculated according to the first time, the optical fingerprint identification module is controlled to start fingerprint collection at the second scanning frequency at the second time, so as to obtain a fingerprint image, a difference between the first scanning frequency and the second scanning frequency is within a preset range, thereby ensuring a synchronous refreshing speed of the optical fingerprint identification module and the display screen, the screen refreshes a certain pixel, the optical fingerprint identification module reads the corresponding pixel, and thus ensuring that each value of the optical fingerprint identification module is a result generated by a corresponding pixel, thereby avoiding light interference of other pixels, and improving the screen brightness in the refreshing process, and improving the quality of the screen.
Referring to fig. 4 in accordance with the above embodiments, fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and as shown in the drawing, the electronic device includes a processor, a memory, a communication interface, and one or more programs, the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, where the one or more programs are stored in the memory and configured to be executed by the processor, and in an embodiment of the present disclosure, the program includes instructions for performing the following steps:
when the fact that a user presses a display screen of the electronic equipment is detected, controlling the display screen to refresh at a first scanning frequency, and recording a first moment when the display screen starts to refresh;
calculating a second moment when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first moment;
and controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference value between the first scanning frequency and the second scanning frequency is within a preset range.
It can be seen that, the electronic device described in the embodiment of the present application, the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, when it is detected that a user presses the display screen of the electronic device, the display screen is controlled to refresh at a first scanning frequency, a first time when the display screen starts to refresh is recorded, a second time when the display screen refreshes to an area where the optical fingerprint identification module is located is calculated according to the first time, the optical fingerprint identification module is controlled to start to perform fingerprint acquisition at a second scanning frequency at the second time, so as to obtain a fingerprint image, a difference between the first scanning frequency and the second scanning frequency is within a preset range, thereby ensuring a synchronous refresh speed of the optical fingerprint identification module and the display screen, the screen refreshes a certain pixel, the optical fingerprint identification module reads a corresponding pixel, and thus ensuring that a value of each read optical fingerprint identification module is a result generated by light corresponding to one pixel, thereby ensuring light interference caused by light emission of other pixels, and improving quality of the fingerprint image.
In one possible example, the program further includes instructions for performing the steps of:
acquiring a pressing parameter of a user for pressing the electronic equipment;
comparing the pressing parameters with preset pressing parameters;
and when the pressing parameter is successfully compared with the preset pressing parameter, confirming that the user presses the display screen of the electronic equipment.
In one possible example, the compression parameters include a degree of compression, a compression area, and a compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
in the aspect of comparing the pressing parameter with a preset pressing parameter, the program includes instructions for executing the following steps:
when the pressing force degree is larger than the preset pressing force degree, determining a target pressing area located in the fingerprint acquisition area in the pressing area;
and when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
In one possible example, the program further includes instructions for performing the steps of:
and determining the first scanning frequency corresponding to the pressing force according to a mapping relation between preset force and scanning frequency.
In one possible example, the program further includes instructions for performing the steps of:
acquiring a target environment light brightness value;
determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters;
the controlling the display screen to refresh at a first scanning frequency comprises:
and controlling the display screen to refresh according to the target display parameters and the first scanning frequency.
In one possible example, the first scanning frequency is equal to the second scanning frequency.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments provided herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 5A is a block diagram of functional units of a fingerprint acquisition apparatus 500 according to an embodiment of the present application. This fingerprint collection device 500 is applied to electronic equipment, electronic equipment includes optics fingerprint identification module and display screen, just optics fingerprint identification module integrate in the display screen below, device 500 includes: a refresh unit 501, a calculation unit 502 and an acquisition unit 503, wherein,
the refreshing unit 501 is configured to, when it is detected that a user presses a display screen of the electronic device, control the display screen to refresh at a first scanning frequency, and record a first time when the display screen starts to refresh;
the calculating unit 502 is configured to calculate a second time when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first time;
the collecting unit 503 is configured to control the optical fingerprint identification module to start fingerprint collection at the second time with a second scanning frequency to obtain a fingerprint image, where a difference between the first scanning frequency and the second scanning frequency is within a preset range.
It can be seen that, the fingerprint collecting device described in the embodiment of the present application is applied to an electronic device, the electronic device includes an optical fingerprint identification module and a display screen, and the optical fingerprint identification module is integrated below the display screen, when it is detected that a user presses the display screen of the electronic device, the display screen is controlled to refresh at a first scanning frequency, and a first time when the display screen starts to refresh is recorded, according to the first time, a second time when the display screen refreshes to an area where the optical fingerprint identification module is located is calculated, the optical fingerprint identification module is controlled to start to perform fingerprint collection at a second scanning frequency at the second time, so as to obtain a fingerprint image, a difference between the first scanning frequency and the second scanning frequency is within a preset range, thereby ensuring a synchronous refresh speed of the optical fingerprint identification module and the display screen, the screen refreshes a certain pixel, and the optical fingerprint identification module reads a corresponding pixel, and thus ensuring that a value of each read optical fingerprint identification module is a result generated by light corresponding to one pixel, thereby optical interference caused by light emission of other pixels is improved fingerprint image quality.
In one possible example, as shown in fig. 5B, fig. 5B is a further modified structure of the fingerprint acquisition device shown in fig. 5A, which may further include, compared with fig. 5A: the first obtaining unit 504 and the comparing unit 505 are specifically as follows:
a first obtaining unit 504, configured to obtain a pressing parameter when a user presses the electronic device;
a comparison unit 505, configured to compare the pressing parameter with a preset pressing parameter;
when the comparison between the pressing parameters and the preset pressing parameters is successful, the refreshing unit 501 controls the display screen to refresh at a first scanning frequency when detecting that the user presses the display screen of the electronic device
In one possible example, the compression parameters include a degree of compression, a compression area, and a compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
in the aspect of comparing the pressing parameter with a preset pressing parameter, the comparing unit 505 is specifically configured to:
when the pressing force degree is greater than the preset pressing force degree, determining a target pressing area located in the fingerprint acquisition area in the pressing area;
and when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
In one possible example, as shown in fig. 5C, fig. 5C is a further modified structure of the fingerprint acquisition device shown in fig. 5B, which may further include, compared with fig. 5B: the first determining unit 506 is specifically as follows:
the first determining unit 506 is configured to determine the first scanning frequency corresponding to the pressing force according to a preset mapping relationship between the force and the scanning frequency.
In one possible example, as shown in fig. 5D, fig. 5D is a further modified structure of the fingerprint acquisition device shown in fig. 5A, which may further include, compared with fig. 5A: the second obtaining unit 507 and the second determining unit 508 are specifically as follows:
a second obtaining unit 507, configured to obtain a target ambient light brightness value;
a second determining unit 508, configured to determine, according to a mapping relationship between a preset ambient light brightness value and a display parameter, a target display parameter corresponding to the target ambient light brightness value;
in the aspect of controlling the display screen to refresh at the first scanning frequency, the refresh unit 501 is specifically configured to:
and controlling the display screen to refresh according to the target display parameters and the first scanning frequency.
In one possible example, the first scanning frequency is equal to the second scanning frequency.
Embodiments of the present application also provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes an electronic device.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.
It should be noted that for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing embodiments have been described in detail, and specific examples are used herein to explain the principles and implementations of the present application, where the above description of the embodiments is only intended to help understand the method and its core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (15)
1. An electronic device, comprising a processing circuit, and an optical fingerprint recognition module and a display screen connected to the processing circuit, wherein the optical fingerprint recognition module is integrated under the display screen,
the display screen is used for refreshing at a first scanning frequency and recording a first moment when the display screen of the electronic equipment is started to be refreshed when a user is detected to press the display screen;
the processing circuit is used for calculating a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment;
the optical fingerprint identification module is configured to start fingerprint acquisition at the second time with a second scanning frequency to obtain a fingerprint image, where a difference between the first scanning frequency and the second scanning frequency is within a preset range, and the difference between the first scanning frequency and the second scanning frequency is close to 0.
2. The electronic device of claim 1, wherein the display screen is further specifically configured to:
acquiring a pressing parameter of a user for pressing the electronic equipment;
the processing circuit is further specifically configured to:
comparing the pressing parameters with preset pressing parameters;
and confirming that the user presses the display screen of the electronic equipment when the pressing parameter is successfully compared with the preset pressing parameter.
3. The electronic device of claim 2, wherein the compression parameters include a degree of compression, a compression area, and a compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
in the aspect of comparing the pressing parameter with a preset pressing parameter, the processing circuit is specifically configured to:
when the pressing force degree is greater than the preset pressing force degree, determining a target pressing area located in the fingerprint acquisition area in the pressing area;
and when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
4. The electronic device of claim 3, wherein the processing circuit is further specifically configured to:
and determining the first scanning frequency corresponding to the pressing force according to a mapping relation between preset force and scanning frequency.
5. The electronic device of any of claims 1-4, further comprising: an ambient light sensor;
the environment light sensor is used for acquiring a target environment light brightness value;
the processing circuit is further specifically configured to:
determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters;
in the aspect of controlling the display screen to refresh at the first scanning frequency, the display screen is specifically configured to:
and refreshing according to the target display parameters and the first scanning frequency.
6. The electronic device of any of claims 1-5, wherein the first scanning frequency is equal to the second scanning frequency.
7. The fingerprint collection method is applied to electronic equipment, the electronic equipment comprises an optical fingerprint identification module and a display screen, the optical fingerprint identification module is integrated below the display screen, and the method comprises the following steps:
when the fact that a user presses a display screen of the electronic equipment is detected, controlling the display screen to refresh at a first scanning frequency, and recording a first moment when the display screen starts to refresh;
calculating a second moment when the display screen is refreshed to the area where the optical fingerprint identification module is located according to the first moment;
and controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference between the first scanning frequency and the second scanning frequency is within a preset range, and the difference between the first scanning frequency and the second scanning frequency is close to 0.
8. The method of claim 7, further comprising:
acquiring a pressing parameter of a user for pressing the electronic equipment;
comparing the pressing parameters with preset pressing parameters;
and when the comparison of the pressing parameters and the preset pressing parameters is successful, confirming that the user presses the display screen of the electronic equipment.
9. The method of claim 8, wherein the compression parameters include a degree of compression, a compression area, and a compression area; the preset pressing parameters comprise a preset pressing intensity, a preset pressing area and a fingerprint acquisition area, and the fingerprint acquisition area is an area where the optical fingerprint identification module is located;
the comparing the pressing parameters with preset pressing parameters comprises:
when the pressing force degree is greater than the preset pressing force degree, determining a target pressing area located in the fingerprint acquisition area in the pressing area;
and when the target pressing area is larger than the preset pressing area, confirming that the pressing parameter is successfully compared with the preset pressing parameter.
10. The method of claim 9, further comprising:
and determining the first scanning frequency corresponding to the pressing force according to a mapping relation between preset force and scanning frequency.
11. The method according to any one of claims 7-10, further comprising:
acquiring a target environment light brightness value;
determining target display parameters corresponding to the target ambient light brightness values according to a preset mapping relation between the ambient light brightness values and the display parameters;
the controlling the display screen to refresh at a first scanning frequency comprises:
and controlling the display screen to refresh according to the target display parameters and the first scanning frequency.
12. The method of any of claims 7-11, wherein the first scanning frequency is equal to the second scanning frequency.
13. The utility model provides a fingerprint collection device, its characterized in that is applied to electronic equipment, electronic equipment includes optics fingerprint identification module and display screen, just optics fingerprint identification module is integrated in the display screen below, the device includes: a refreshing unit, a calculating unit and an acquisition unit, wherein,
the refreshing unit is used for controlling the display screen to refresh at a first scanning frequency and recording a first moment when the display screen of the electronic equipment is refreshed when a user is detected to press the display screen;
the computing unit is used for computing a second moment when the display screen refreshes to the area where the optical fingerprint identification module is located according to the first moment;
the acquisition unit is used for controlling the optical fingerprint identification module to start fingerprint acquisition at a second scanning frequency at the second moment to obtain a fingerprint image, wherein the difference between the first scanning frequency and the second scanning frequency is within a preset range, and the difference between the first scanning frequency and the second scanning frequency is close to 0.
14. An electronic device comprising a processor, a memory for storing one or more programs and configured for execution by the processor, the programs comprising instructions for performing the steps of the method of any of claims 7-12.
15. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any of the claims 7-12.
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| CN110188698B (en) * | 2019-05-31 | 2021-05-14 | Oppo广东移动通信有限公司 | Fingerprint identification control method and device and computer readable storage medium |
| CN110287842B (en) * | 2019-06-17 | 2021-08-10 | Oppo广东移动通信有限公司 | Fingerprint scanning method and related product |
| CN110287922B (en) * | 2019-06-29 | 2021-05-07 | Oppo广东移动通信有限公司 | Fingerprint identification method and related product |
| CN111163548A (en) * | 2019-12-31 | 2020-05-15 | 维沃移动通信有限公司 | Lamplight display control method and device |
| CN112434572B (en) * | 2020-11-09 | 2022-05-06 | 北京极豪科技有限公司 | Fingerprint image calibration method and device, electronic equipment and storage medium |
| WO2022126653A1 (en) * | 2020-12-18 | 2022-06-23 | 深圳市汇顶科技股份有限公司 | Heart rate measurement apparatus and method, and electronic device |
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