WO2020083014A1 - 电磁干扰控制方法及相关装置 - Google Patents

电磁干扰控制方法及相关装置 Download PDF

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Publication number
WO2020083014A1
WO2020083014A1 PCT/CN2019/109456 CN2019109456W WO2020083014A1 WO 2020083014 A1 WO2020083014 A1 WO 2020083014A1 CN 2019109456 W CN2019109456 W CN 2019109456W WO 2020083014 A1 WO2020083014 A1 WO 2020083014A1
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WO
WIPO (PCT)
Prior art keywords
frequency
screen
display screen
display
mipi
Prior art date
Application number
PCT/CN2019/109456
Other languages
English (en)
French (fr)
Inventor
唐凯
谭正鹏
陈运
王立中
杨海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP19875351.9A priority Critical patent/EP3862896A4/en
Publication of WO2020083014A1 publication Critical patent/WO2020083014A1/zh
Priority to US17/237,448 priority patent/US11690206B2/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0054—Casings specially adapted for display applications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • 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
    • G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0435—Change or adaptation of the frame rate of the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display

Definitions

  • This application relates to the technical field of electronic equipment, in particular to an electromagnetic interference control method and related devices.
  • the display industry mobile processor interface MIPI frequency may be The working frequency of the lower fingerprint module generates electromagnetic interference, which causes fingerprint identification errors and unlock failures.
  • Embodiments of the present application provide an electromagnetic interference control method and related devices, with a view to improving the accuracy and stability of off-screen fingerprint unlocking performed by an electronic device.
  • an embodiment of the present application provides an electromagnetic interference control method, which is applied to an electronic device.
  • the electronic device includes a display screen and an off-screen fingerprint module disposed in a preset area of the display screen.
  • the method includes :
  • an embodiment of the present application provides an electromagnetic interference control apparatus, which is applied to an electronic device.
  • the electronic device includes a display screen and an off-screen fingerprint module provided in a preset area of the display screen, and the processing includes Unit and communication unit, where,
  • the processing unit is configured to detect whether electromagnetic interference between the off-screen fingerprint module and the display screen occurs through the communication unit when it is detected that the under-screen fingerprint module is in the activated state.
  • the preset area is in a lighted state; and when electromagnetic interference between the off-screen fingerprint module and the display screen is detected, a frequency hopping switching operation is performed for the display screen mobile industry processor interface MIPI.
  • an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be processed by the above
  • the above program includes instructions for performing the steps in any method of the first aspect of the embodiments of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the first embodiment of the present application.
  • the computer program causes the computer to execute the first embodiment of the present application.
  • an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing the computer program, and the computer program is operable to cause the computer to execute as implemented in the present application Examples of some or all of the steps described in any method of the first aspect.
  • the computer program product may be a software installation package.
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • FIG. 1 is an exemplary architecture diagram of a wireless communication system provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 6 is a block diagram of functional units of an electromagnetic interference control device provided by an embodiment of the present application.
  • the electronic devices involved in the embodiments of the present application may be electronic devices with data transmission capabilities, and the electronic devices may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices, or devices connected to a wireless modem Other processing equipment, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal equipment (terminal device), etc.
  • UE User Equipment
  • MS Mobile Station
  • terminal device terminal device
  • Fingerprint recognition technology maps a person to his fingerprint. By comparing his fingerprint with a pre-stored fingerprint and comparing the details of different fingerprints for identification, he can verify his true identity. Fingerprint lines often have interruptions, bifurcations or turning points. These breakpoints, bifurcation points and turning points are called "feature points”.
  • fingerprint patterns are different in patterns, breakpoints and intersections, and they are unique. Only with this uniqueness and stability can we create fingerprint recognition technology.
  • Fingerprint recognition technology has the advantages of fast recognition, convenient collection and low price. It is widely used in many disciplines such as image processing, pattern recognition, computer vision and so on.
  • the light-sensitive screen fingerprint recognition technology is the off-screen fingerprint recognition technology, which is to place the recognition module under the screen panel of the mobile phone. During recognition, the RGB light emitted by the module penetrates the panel to form a fingerprint light film at the fingertip, and then The collected fingerprint information is fed back to the identification module to complete the operation through system comparison. Exemplarily, as shown in FIG.
  • the electronic device is 101
  • the display screen is 102
  • the preset area for collecting fingerprints is 103
  • 104 is a schematic diagram of a fingerprint
  • a schematic diagram of an electronic device 101 collecting fingerprints 104 when a finger touches the screen, The light emitted by the display screen penetrates the cover plate to illuminate the texture of the fingerprint, the reflected light of the fingerprint penetrates the screen and returns to the sensor, and finally forms a fingerprint image for identification.
  • FIG. 2 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to an electronic device.
  • the electronic device includes a display screen and a screen provided in a preset area of the display screen.
  • Fingerprint module as shown in the figure, this electromagnetic interference control method includes:
  • Step 201 When detecting that the under-screen fingerprint module is in the activated state, the electronic device detects whether electromagnetic interference occurs between the under-screen fingerprint module and the display screen, and the preset area of the display screen is at a point Bright state
  • the under-screen fingerprint module relies on optical principles to collect fingerprint images
  • the electronic device when the electronic device activates the under-screen fingerprint module, it will light up the preset area near the under-screen fingerprint module synchronously. Since the display is in working state, its MIPI will work according to a certain working frequency. In this case, if the MIPI frequency and the sampling frequency of the fingerprint module under the screen may affect each other, electromagnetic interference may occur.
  • the preset area may be a display area adjacent to the under-screen fingerprint module, and the specific setting position and size of the under-screen fingerprint module are not uniquely limited.
  • Step 202 When detecting that electromagnetic interference between the off-screen fingerprint module and the display screen, the electronic device performs a frequency hopping switching operation on the display screen mobile industry processor interface MIPI.
  • the display screen can support different MIPI frequencies or frequency bands according to chip capabilities, such as 514.5MHz, 512.5MHz.
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • the electronic device performing a frequency hopping switching operation on the display screen mobile industry processor interface MIPI includes: the electronic device determining a target frequency value of the MIPI frequency of the display screen; The MIPI frequency of the display screen is adjusted to the target frequency value.
  • the target frequency value is a frequency that does not cause electromagnetic interference with the sampling frequency of the fingerprint module under the screen, and specifically refers to the target frequency value itself, or frequency multiplication, or frequency division and the sampling frequency of the fingerprint module under the screen
  • the difference is greater than the preset difference.
  • the electronic device when the electronic device performs the frequency hopping operation, it first determines the target frequency value of the display MIPI frequency, and then adjusts the display MIPI frequency to the target frequency value, that is, by adjusting the display MIPI frequency to avoid the screen
  • the fingerprint module affects the accuracy and stability of fingerprint image collection due to electromagnetic interference, and improves the accuracy and stability of fingerprint images collected by electronic devices.
  • the electronic device determining the target frequency value of the MIPI frequency of the display screen includes: the electronic device acquiring the available frequency range or available frequency value of the MIPI frequency of the display screen; according to the The available frequency range or available frequency value and the first sampling frequency of the fingerprint module under the screen determine the target frequency value of the MIPI frequency of the display screen.
  • the available frequency range of the MIPI frequency of the display screen may include one or more frequency ranges.
  • the available frequency value of the MIPI frequency of the display screen includes multiple frequency values. Since the first sampling frequency of the fingerprint module under the screen is generally preset to a fixed value, the MIPI frequency needs to be adjusted to a frequency that does not cause electromagnetic interference with the first sampling frequency.
  • the electronic device can dynamically adjust the MIPI frequency of the display screen, so that the electromagnetic interference can be reduced or eliminated while keeping the first sampling frequency of the fingerprint module under the screen unchanged, and the fingerprint image is guaranteed to be collected Accuracy and stability.
  • the obtaining the available frequency range or available frequency value of the MIPI frequency of the display screen by the electronic device includes: the electronic device determining the display state of the display screen, the display state including the information screen The display state and the bright screen display state.
  • the breathing screen display state refers to a display state in which the display screen lights only the preset area
  • the bright screen display state refers to a state in which the display screen lights up in full screen;
  • the electronic device when the electronic device is in the screen display state, only the preset area is lit, so it generally does not involve the display of specific image content, that is, its function is only to provide a light source for the fingerprint module under the screen, so in this case, the electronic device
  • the frame rate and resolution of the display screen are relatively low, so that the frequency in the corresponding first frequency adjustable range can be relatively low.
  • the display screen can display the lock screen interface , Such as lock screen magazine, etc., in this state, the user may have the need to consult the content of the interface, so the electronic device has relatively high requirements on the frame rate and resolution of the display screen, so the corresponding second MIPI frequency is adjustable
  • the frequency of can be relatively high, that is, for these two states, different frequency ranges are preset to more accurately adapt to the current display state of the display screen.
  • the electronic device can preset different MIPI frequency adjustable ranges for different display states of the display screen, so that the target frequency value that is more suitable for the current display state can be determined according to the frequency range, so as to reduce or avoid At the same time of electromagnetic interference, the performance of the system is balanced. Specifically, in the state of the screen display, the energy consumption can be reduced, and in the state of the screen display, the display effect and user experience can be guaranteed.
  • the electronic device adjusting the MIPI frequency of the display screen to the target frequency value includes: the electronic device acquiring the target value of the screen parameter associated with the pre-configured target frequency value ,
  • the target value is associated with a reference value, the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the first constraint condition is the The amount of change of the frame rate of the display screen after MIPI frequency switching is less than the first preset threshold
  • the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: horizontal trailing edge HBP, horizontal leading edge HFP , The vertical trailing edge VBP, the vertical leading edge VFP, the width of the vertical synchronization signal VSA, the width of the horizontal synchronization signal HAS; adjusting the value of the screen parameter to the target value, and adjusting the MIPI frequency of the display screen to the target Frequency value.
  • the preset frame rate calculation formula is the following formula:
  • FPS CLK_rate x 2x lane_num / ((height + VBP + VSA + VFP) x (weight + HBP + HFP + HSA) x bits_perpixel)
  • FPS indicates the frame rate of the display screen
  • CLK_rate indicates the MIPI frequency
  • lane_num indicates the number of channels
  • height and weight indicate the physical size of the display screen
  • VBP vertical backporch
  • VFB vertical front porch
  • VSA vertical sync active
  • HBP horizontal backporch
  • HFP horizontal frontporth
  • bits_perpixel indicates the width of RGB display data.
  • the first preset threshold may be an empirical value, which is used to ensure the stability of the content display of the display screen before and after frequency switching, such as the maximum allowable error range of the display chip of 1%.
  • the electronic device after the frequency hopping is switched on by the electronic device, some parameters of the display screen of the electronic device will be changed, and the frame rate is an important parameter index to ensure the stability of the display after the frequency hopping switching of the display device, so the electronic device
  • the target value of the screen parameter that needs to be synchronously adjusted during the frequency hopping process can be pre-determined based on the frame rate formula, thereby improving the display stability of the display screen.
  • the screen parameters include horizontal screen parameters, and the horizontal screen parameters include at least one of the following: the HBP, the HFP, and the HAS;
  • the target value is determined by the electronic device adjusting the reference value under a second constraint condition, the second constraint condition is that the amount of change in the line scan duration of the display screen after MIPI frequency switching is less than the second Preset threshold.
  • the line scan time is measured at 7.18us, and when the MIPI frequency is switched to the auxiliary frequency of 529MHz, fine-tuning is performed according to the reference value of the screen parameter, and the line scan time is measured simultaneously to determine the line
  • the value of the screen parameter after the fine adjustment in the scan time of 7.18us is the target value.
  • the above preset frame rate calculation formula is only a theoretical calculation formula.
  • the accuracy of this reference value is not very high, and the actual MIPI transmission frequency and the value of the screen parameter are different. Large (the difference between MHz and tens or hundreds), and the horizontal screen parameters of the display screen have a greater impact on the display stability, so consider modifying the value of the horizontal screen parameters based on the actual detection results to improve stability.
  • the target value may be equal to the reference value, that is, the adjustment The vertical porch value has no effect on the line scan duration.
  • the electronic device can modify the reference value according to the constraint condition of the line scan duration and the actual detection result, thereby improving the stability of the display screen after frequency hopping.
  • the electronic device detecting whether electromagnetic interference between the off-screen fingerprint module and the display screen includes: the electronic device detecting a first sampling frequency of the off-screen fingerprint module, and Detecting the first frequency of the MIPI of the display screen; according to the first sampling frequency and the first frequency, detecting whether electromagnetic interference occurs between the under-screen fingerprint module and the display screen.
  • the sampling frequency of the fingerprint module under the screen can be directly read, and the first frequency of MIPI can be read by the control chip of the display screen.
  • the electronic device can separately obtain the sampling frequency of the fingerprint module under the screen and the MIPI frequency of the display screen, and compare the two frequencies to determine whether electromagnetic interference occurs. Since the sampling frequency and MIPI frequency information can be obtained in real time, Improve recognition efficiency.
  • the electronic device detecting whether electromagnetic interference occurs between the off-screen fingerprint module and the display screen according to the first sampling frequency and the first frequency includes: The first frequency determines a first frequency set, the first frequency set includes the first frequency and at least one frequency division and / or at least one frequency multiplication of the first frequency; the first sampling frequency is The frequencies in the first frequency set are compared to detect whether electromagnetic interference occurs between the off-screen fingerprint module and the display screen.
  • the frequency multiplication or division of the MIPI frequency of the display screen can also interfere with devices in similar frequency bands and cause electromagnetic interference. Therefore, by comparing the first sampling frequency with the frequency in the first frequency set, a comprehensive and accurate comparison Detection of electromagnetic interference to improve detection accuracy and comprehensiveness.
  • FIG. 3 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to the electronic device shown in FIG.
  • the device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the electromagnetic interference control method includes:
  • the electronic device when detecting that the off-screen fingerprint module is in an activated state, the electronic device detects whether electromagnetic interference occurs between the off-screen fingerprint module and the display screen, and the preset area of the display screen is lit status;
  • the electronic device determines the target frequency value of the MIPI frequency of the display screen when it detects electromagnetic interference between the off-screen fingerprint module and the display screen;
  • the electronic device adjusts the MIPI frequency of the display screen to the target frequency value.
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • the electronic device when it performs the frequency hopping operation, it first determines the target frequency value of the display MIPI frequency, and then adjusts the display MIPI frequency to the target frequency value, that is, by adjusting the display MIPI frequency to avoid the under-screen fingerprint module. Electromagnetic interference affects the accuracy and stability of fingerprint image collection, and improves the accuracy and stability of fingerprint images collected by electronic devices.
  • FIG. 4 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to an electronic device.
  • this electromagnetic interference control Methods include:
  • the electronic device when detecting that the off-screen fingerprint module is in an activated state, the electronic device detects whether electromagnetic interference occurs between the off-screen fingerprint module and the display screen, and the preset area of the display screen is lit status;
  • the display state of the display screen is determined, and the display state includes a display screen display state and a bright screen display state,
  • the screen display state refers to a display state in which the display screen only lights up the preset area, and the screen display state refers to a state in which the display screen lights up in full screen;
  • the electronic device queries a preset mapping relationship set to obtain the available frequency range or available frequency value of the MIPI frequency corresponding to the display state of the display screen, and the mapping relationship set includes the available frequency range of the display state and the MIPI frequency Or the correspondence between the available frequency values.
  • the electronic device determines the target frequency value of the MIPI frequency of the display screen according to the available frequency range or available frequency value and the first sampling frequency of the off-screen fingerprint module.
  • the electronic device obtains a target value of a screen parameter associated with the target frequency value that is pre-configured.
  • the target value is associated with a reference value.
  • the reference value is based on a preset condition of the electronic device under a first constraint condition. Determined by the frame rate calculation formula and the target frequency value, the first constraint condition is that the change amount of the frame rate of the display screen after MIPI frequency switching is less than a first preset threshold, and the screen parameters include the At least one of the following porch values in the preset frame rate calculation formula: horizontal trailing edge HBP, horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, width of vertical synchronization signal VSA, width of horizontal synchronization signal HAS;
  • the electronic device adjusts the value of the screen parameter to the target value, and adjusts the MIPI frequency of the display screen to the target frequency value.
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • the electronic device can preset different MIPI frequency adjustable ranges for different display states of the display screen, so that the target frequency value that is more suitable for the current display state can be determined according to the frequency range, while reducing or avoiding electromagnetic interference
  • the electronic device can preset different MIPI frequency adjustable ranges for different display states of the display screen, so that the target frequency value that is more suitable for the current display state can be determined according to the frequency range, while reducing or avoiding electromagnetic interference
  • FIG. 5 is a schematic structural diagram of an electronic device 500 provided by an embodiment of the present application.
  • the electronic device 500 includes an application processor 510, a memory 520, a communication interface 530, and one or more programs 521, wherein the one or more programs 521 are stored in the above-mentioned memory 520 and are configured to be executed by the above-mentioned application processor 510,
  • the one or more programs 521 include instructions for performing the following steps:
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • the instructions in the program are specifically used to perform the following operations: determining the MIPI frequency of the display screen A target frequency value; and adjusting the MIPI frequency of the display screen to the target frequency value.
  • the instructions in the program are specifically used to perform the following operations: obtain the available frequency range of the MIPI frequency of the display screen or An available frequency value; and determining the target frequency value of the MIPI frequency of the display screen according to the available frequency range or the available frequency value and the first sampling frequency of the fingerprint module under the screen.
  • the instructions in the program are specifically used to perform the following operations: determine the display state of the display screen,
  • the display state includes a screen display state and a bright screen display state, the screen display state refers to a display state in which the display screen only lights up the preset area, and the screen display state refers to the display The state where the screen is full on the screen; and query the preset mapping relationship set to obtain the available frequency range or available frequency value of the MIPI frequency corresponding to the display state of the display screen, the mapping relationship set includes the display state and the available MIPI frequency Correspondence between frequency ranges or available frequency values.
  • the instructions in the program are specifically used to perform the following operations: acquiring a pre-configured target frequency value A target value of the associated screen parameter, the target value being associated with a reference value, the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the The first constraint condition is that the amount of change of the frame rate of the display screen after MIPI frequency switching is less than a first preset threshold, and the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: level Trailing edge HBP, horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, vertical sync signal width VSA, horizontal sync signal width HAS; and adjusting the screen parameter value to the target value and adjusting the display
  • the MIPI frequency of the screen is the target frequency value.
  • the screen parameters include horizontal screen parameters, and the horizontal screen parameters include at least one of the following: the HBP, the HFP, and the HAS;
  • the target value is determined by the electronic device adjusting the reference value under a second constraint condition, the second constraint condition is that the amount of change in the line scan duration of the display screen after MIPI frequency switching is less than the second Preset threshold.
  • the instructions in the program are specifically used to perform the following operations: detect the off-screen fingerprint module The first sampling frequency and the first frequency for detecting the MIPI of the display screen; and according to the first sampling frequency and the first frequency, detecting whether electromagnetic interference occurs between the under-screen fingerprint module and the display screen interference.
  • the instructions in the program are specific For performing the following operations: determining a first frequency set according to the first frequency, the first frequency set including the first frequency and at least one frequency division and / or at least one frequency multiplication of the first frequency; and Comparing the first sampling frequency with the frequencies in the first frequency set, and detecting whether electromagnetic interference occurs between the off-screen fingerprint module and the display screen.
  • the electronic device includes a hardware structure and / or a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application may divide the functional unit of the electronic device according to the above 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 above integrated unit can be implemented in the form of hardware or software function unit. It should be noted that the division of units in the embodiments of the present application is schematic, and is only a division of logical functions, and there may be other division manners in actual implementation.
  • FIG. 6 is a block diagram of the functional units of the electromagnetic interference control device 600 involved in the embodiment of the present application.
  • the electromagnetic interference control device 600 is applied to electronic equipment, including a processing unit 601 and a communication unit 602, wherein,
  • the processing unit 601 is configured to detect whether electromagnetic interference between the off-screen fingerprint module and the display screen occurs through the communication unit 602 when it is detected that the off-screen fingerprint module is in an activated state, the display The preset area of the screen is in a lighted state; and when electromagnetic interference between the fingerprint module under the screen and the display screen is detected, a frequency hopping switching operation is performed for the display industry interface MIPI.
  • the electromagnetic interference control apparatus 600 may further include a storage unit 603 for storing program codes and data of electronic devices.
  • the processing unit 601 may be a processor
  • the communication unit 602 may be a touch screen or a transceiver
  • the storage unit 603 may be a memory.
  • the electronic device includes a display screen and an off-screen fingerprint module set in a preset area of the display screen.
  • the off-screen fingerprint module is first detected Whether electromagnetic interference occurs between the group and the display screen, where the preset area of the display screen is lit, and secondly, when electromagnetic interference between the fingerprint module and the display screen under the screen is detected, the jump is executed for the display industry mobile interface MIPI Frequency switching operation. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the under-screen fingerprint module, thereby improving the accuracy and stability of the off-screen fingerprint unlocking of the electronic device.
  • the processing unit 601 is specifically configured to: determine a target frequency value of the display screen MIPI frequency; And adjusting the MIPI frequency of the display screen to the target frequency value.
  • the processing unit 601 is specifically configured to: obtain an available frequency range or available frequency value of the MIPI frequency of the display screen; And determining the target frequency value of the MIPI frequency of the display screen according to the available frequency range or available frequency value and the first sampling frequency of the under-screen fingerprint module.
  • the processing unit 601 is specifically configured to: determine the display state of the display screen, the display state Including the display screen status and the bright screen display status, the display screen status means that the display screen only lights up the preset area, and the display screen status means that the display screen lights up on the whole screen State; and query the preset mapping relationship set to obtain the available frequency range or available frequency value of the MIPI frequency corresponding to the display state of the display screen, the mapping relationship set includes the available frequency range or available frequency range of the display state and the MIPI frequency Correspondence between frequency values.
  • the processing unit 601 is specifically configured to: obtain a pre-configured screen parameter associated with the target frequency value
  • the target value of the target value is associated with a reference value
  • the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the first constraint condition Is that the amount of change of the frame rate of the display screen after the MIPI frequency switching is less than the first preset threshold
  • the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: horizontal back edge HBP, Horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, vertical sync signal width VSA, horizontal sync signal width HAS; and adjusting the screen parameter value to the target value, and adjusting the display screen MIPI frequency Is the target frequency value.
  • the screen parameters include horizontal screen parameters, and the horizontal screen parameters include at least one of the following: the HBP, the HFP, and the HAS;
  • the target value is determined by the electronic device adjusting the reference value under a second constraint condition, the second constraint condition is that the amount of change in the line scan duration of the display screen after MIPI frequency switching is less than the second Preset threshold.
  • the processing unit 601 is specifically configured to: through the communication unit 602 Detecting the first sampling frequency of the off-screen fingerprint module, and detecting the first frequency of MIPI of the display screen through the communication unit 602; and detecting the location based on the first sampling frequency and the first frequency Whether electromagnetic interference occurs between the fingerprint module under the screen and the display screen.
  • the processing unit 601 is specifically used Yu: determine a first frequency set according to the first frequency, the first frequency set includes at least one frequency division and / or at least one frequency multiplication of the first frequency and the first frequency; A sampling frequency is compared with the frequencies in the first frequency set to detect whether electromagnetic interference occurs between the under-screen fingerprint module and the display screen.
  • An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, which causes the computer to perform part or all of the steps of any method described in the above method embodiments ,
  • the above computer includes electronic devices.
  • Embodiments of the present application also provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium that stores the computer program, and the computer program is operable to cause the computer to perform any of the methods described in the foregoing method embodiments Some or all steps of the method.
  • the computer program product may be a software installation package, and the computer includes an electronic device.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the above-mentioned unit division is only a logical function division.
  • there may be other division modes for example, multiple units or components may be combined or integrated To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or software function unit.
  • the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or all or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a memory, Several instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the above methods in various embodiments of the present application.
  • the aforementioned memory includes: U disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program may be stored in a computer-readable memory, and the memory may include: a flash disk , Read-Only Memory (English: Read-Only Memory, abbreviation: ROM), Random Access Device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.
  • ROM Read-Only Memory
  • RAM Random Access Device
  • magnetic disk or optical disk etc.

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Abstract

一种电磁干扰控制方法及相关装置，应用于电子设备（101），电子设备（101）包括显示屏（102）和设置于显示屏（102）的预设区域（103）的屏下指纹模组，方法包括：在检测到屏下指纹模组处于启动状态时，检测屏下指纹模组与显示屏（102）是否发生电磁干扰，显示屏（102）的预设区域（103）处于点亮状态（S201）；在检测到屏下指纹模组与显示屏（102）发生电磁干扰时，针对显示屏（102）移动行业处理器接口MIPI执行跳频切换操作（S202）。所述控制方法有利于电子设备进行屏下指纹解锁的准确度和稳定性。

Description

电磁干扰控制方法及相关装置 技术领域
本申请涉及电子设备技术领域，具体涉及一种电磁干扰控制方法及相关装置。
背景技术
随着移动通信技术的发展，手机等电子设备集成的功能越来越多，目前很多手机集成有屏下指纹模组以实现屏下指纹解锁功能，显示屏移动行业处理器接口MIPI频率可能与屏下指纹模组的工作频率产生电磁干扰，造成指纹识别出错解锁失败。
发明内容
本申请实施例提供了一种电磁干扰控制方法及相关装置，以期提高电子设备进行屏下指纹解锁的准确度和稳定性。
第一方面，本申请实施例提供一种电磁干扰控制方法，应用于电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组，所述方法包括：
在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
第二方面，本申请实施例提供一种电磁干扰控制装置，应用于电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组，所述包括处理单元和通信单元，其中，
所述处理单元，用于在检测到所述屏下指纹模组处于启动状态时，通过所述通信单元检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；以及在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
第三方面，本申请实施例提供一种电子设备，包括处理器、存储器、通信接口以及一个或多个程序，其中，上述一个或多个程序被存储在上述存储器中，并且被配置由上述处理器执行，上述程序包括用于执行本申请实施例第一方面任一方法中的步骤的指令。
第四方面，本申请实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本申请实施例第一方面任一方法中所描述的部分或全部步骤。
第五方面，本申请实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本申请实施例第一方面任一方法中所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种无线通信系统的示例架构图；
图2是本申请实施例提供的一种电磁干扰控制方法的流程示意图；
图3是本申请实施例提供的另一种电磁干扰控制方法的流程示意图；
图4是本申请实施例提供的另一种电磁干扰控制方法的流程示意图；
图5是本申请实施例提供的一种电子设备的结构示意图；
图6是本申请实施例提供的一种电磁干扰控制装置的功能单元组成框图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请实施例所涉及到的电子设备可以是具备数据传输能力的电子设备，该电子设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端设备(terminal device)等等。下面对本申请实施例进行详细介绍。下面对本申请实施例进行详细介绍。
指纹识别技术把一个人同他的指纹对应起来，通过比较他的指纹和预先保存的指纹进行比较，比较不同指纹的细节特征点来进行鉴别，就可以验证他的真实身份。指纹纹路经常出现中断、分叉或转折，这些断点、分叉点和转折点被称为"特征点"。每个人指纹纹路在图案、断点和交叉点上各不相同，是唯一的，依靠这种唯一性和稳定性，我们才能创造指纹识别技术。每个人包括指纹在内的皮肤纹路在图案、断点和交叉点上各不相同，呈现唯一性且终生不变。指纹识别技术拥有识别速度快、采集方便和价格低廉等优点，被广泛应用于图像处理、模式识别、计算机视觉等众多学科领域。光感屏幕指纹识别技术即屏下指纹识别技术，就是将识别模组放置在手机屏幕面板之下，在识别的时候通过模组发射的RGB射光穿透面板在指尖形成指纹光膜，随后将采集的指纹信息反馈回识别模组，通过系统比对完成操作。示例性的，如图1所示，电子设备为101，显示屏为102，采集指纹的预设区域为103，104为指纹示意图；一个电子设备101采集指纹104的示意图，当手指接触屏幕 时，显示屏发出的光线穿透盖板将指纹纹理照亮，指纹反射光线穿透屏幕返回传感器，最终形成指纹图像来进行识别。
请参阅图2，图2是本申请实施例提供了一种电磁干扰控制方法的流程示意图，应用于电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组；如图所示，本电磁干扰控制方法包括：
步骤201，电子设备在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
其中，由于屏下指纹模组依靠光学原理采集指纹图像，因此电子设备启用屏下指纹模组时，会同步点亮屏下指纹模组附近的预设区域。由于显示屏处于工作状态，故而其MIPI会按照一定的工作频率进行工作，此种情况下若MIPI频率和屏下指纹模组的采样频率有可能相互影响而发生电磁干扰。
具体实现中，所述预设区域可以是与屏下指纹模组相邻的显示区域，屏下指纹模组的具体设置位置和大小不做唯一限定。
步骤202，所述电子设备在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
其中，显示屏可以根据芯片能力支持不同MIPI频率或频段，如514.5MHz、512.5MHz。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
在一个可能的示例中，所述电子设备针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作，包括：所述电子设备确定所述显示屏的MIPI频率的目标频率值；将所述显示屏的MIPI频率调整为所述目标频率值。
其中，所述目标频率值为与屏下指纹模组的采样频率不会引起电磁干扰的频率，具体是指该目标频率值本身、或者倍频、或者分频与屏下指纹模组的采样频率的差值大于预设差值。
可见，本示例中，电子设备在执行跳频操作时，首先确定出显示屏MIPI频率的目标频率值，然后调整显示屏MIPI频率为该目标频率值，即通过调整显示屏MIPI频率来避免屏下指纹模组因电磁干扰而影响指纹图像采集的准确度和稳定性，提高电子设备采集指纹图像的准确度和稳定性。
在一个可能的示例中，所述电子设备确定所述显示屏的MIPI频率的目标频率值，包括：所述电子设备获取所述显示屏的MIPI频率的可用频率范围或者可用频率值；根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
其中，所述显示屏的MIPI频率的可用频率范围可以包括一个或多个频率范围，同理，所述显示屏的MIPI频率的可用频率值包括多个频率值。由于屏下指纹模组的第一采样频率一般预设为固定值，故而MIPI频率需要调整到与该第一采样频率不会发生电磁干扰的频率。
可见，本示例中，由于电子设备针对显示屏的MIPI频率可以进行动态调整，从而可以在保持屏下指纹模组的第一采样频率不变的情况下，降低或者消除电磁干扰，保证采集指纹图像的精确度和稳定性。
在一个可能的示例中，所述电子设备获取所述显示屏的MIPI频率的可用频率范围或者可用频率值，包括：所述电子设备确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；查询预设的映射关系集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
其中，电子设备在息屏显示状态下，由于只点亮预设区域，故而一般不涉及具体影像内容的显示，即其功能仅在于为屏下指纹模组提供光源，故而此种情况下电子设备对显示屏的帧率、分辨率等方面的要求相对较低，从而对应的第一频率可调范围中的频率可以相对较低，电子设备在亮屏显示状态下，显示屏可以显示锁屏界面，如锁屏杂志等，此状态下用户可能有查阅界面内容的需求，故而电子设备对显示屏的帧率、分辨率等方面的要求相对较高，从而对应的第二MIPI频率可调范围中的频率可以相对较高，即针对该2个状态，预设了不同的频率范围，以更加准确的适配显示屏当前的显示状态。
可见，本示例中，电子设备针对显示屏的不同显示状态，可以预设不同的MIPI频率可调范围，从而可以根据该频率范围确定更加适配当前显示状态的目标频率值，实现在降低或避免电磁干扰的同时，均衡系统性能，具体的，在息屏显示状态下，可以降低能耗，在亮屏显示状态下，可以保证显示效果和用户体验。
在一个可能的示例中，所述电子设备将所述显示屏的MIPI频率调整为所述目标频率值，包括：所述电子设备获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
其中，所述预设帧率计算公式为如下公式：
FPS＝CLK_rate x 2x lane_num/((height+VBP+VSA+VFP)x(weight+HBP+HFP+HSA)x bits_perpixel)
其中，FPS表示显示屏的帧率，CLK_rate表示MIPI频率，lane_num表示通道数，height和weight表示显示屏的物理尺寸，VBP(vertical back porch)表示在一帧图像开始时，垂直同步信号以后的无效的行数，VFB(vertical front porch)表示在一帧图像结束后，垂直同步信号以前的无效的行数，VSA(vertical sync active)表示垂直同步信号的宽度，HBP(horizontal back porch)表示从水平同步信号开始到一行的有效数据开始之间的时钟的个数，HFP(horizontal front porth)表示一行的有效数据结束到下一个水平同步信号开始之间的时钟的个数，HSA(horizontal sync active)：表示水平同步信号的宽度，bits_perpixel表示RGB显示数据宽度。
其中，所述第一预设阈值可以是经验值，用于保证显示屏在频率切换前后内容显示的稳定性，如可以是显示屏芯片最大允许误差范围1％。
可见，本示例中，电子设备在跳频切换后，会使得电子设备的显示屏的一些参数发生改变，帧率是保证显示屏跳频切换后的显示稳定性的一个重要参数指标，故而电子设备可以基于帧率公式，预先确定该跳频过程中需要同步调整的屏幕参数的目标值，从而提高显示屏显示稳定性。
在一个可能的示例中，所述屏幕参数包括水平屏幕参数，所述水平屏幕参数包括以下 至少一种：所述HBP、所述HFP和所述HAS；
所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的，所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
举例来说，在显示屏MIPI主频率为514.5MHz时测量到行扫描时间为7.18us，MIPI频率切换到辅助频率529MHz时，根据屏幕参数的参考值进行微调，并同步测量行扫描时间，确定行扫描时间为7.18us状态下的微调后的屏幕参数的值为目标值。这主要是由于上述预设帧率计算公式仅为理论计算公式，实际上由于器件的物理差异性，此参考值的准确度并不是很高，而MIPI传输频率和屏幕参数的数值实际又相差较大(MHz和几十、几百的差异)，同时显示屏水平屏幕参数对显示稳定性影响较大，故而考虑基于实际检测结果来修正水平屏幕参数的值，以此提高稳定性。
此外，所述屏幕参数若仅包括垂直屏幕参数，所述垂直屏幕参数包括以下至少一种：所述VBP、所述VFP和所述VAS，则所述目标值可以等于所述参考值，即调整垂直方向的porch值对行扫描时长没有影响。
可见，本示例中，在屏幕参数包括水平屏幕参数的情况下，电子设备能够根据行扫描时长约束条件结合实际检测结果对参考值进行修正，从而提高跳频后显示屏稳定性。
在一个可能的示例中，所述电子设备检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，包括：所述电子设备检测所述屏下指纹模组的第一采样频率，以及检测所述显示屏的MIPI的第一频率；根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
其中，屏下指纹模组的采样频率可以直接读取到，MIPI的第一频率可以由显示屏的控制芯片读取到。
可见，本示例中，电子设备能够分别获取屏下指纹模组的采样频率和显示屏的MIPI频率，并对比这两个频率以确定是否发生电磁干扰，由于采样频率和MIPI频率信息可以实时获取，提高识别效率。
在一个可能的示例中，所述电子设备根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，包括：所述电子设备根据所述第一频率确定第一频率集合，所述第一频率集合包括所述第一频率和所述第一频率的至少一个分频和/或至少一个倍频；将所述第一采样频率与所述第一频率集合中的频率进行比对，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
可见，本示例中，由于显示屏MIPI频率的倍频或者分频也会干扰相近频段器件而引发电磁干扰，故而通过第一采样频率和第一频率集合中的频率比对，全面、准确的对电磁干扰情况进行检测，提高检测准确度和全面性。
与上述图2所示的实施例一致的，请参阅图3，图3是本申请实施例提供的一种电磁干扰控制方法的流程示意图，应用于如图1所述的电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组，如图所示，本电磁干扰控制方法包括：
S301，电子设备在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
S302，所述电子设备在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，确定所述显示屏的MIPI频率的目标频率值；
S303，所述电子设备将所述显示屏的MIPI频率调整为所述目标频率值。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否 发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
此外，电子设备在执行跳频操作时，首先确定出显示屏MIPI频率的目标频率值，然后调整显示屏MIPI频率为该目标频率值，即通过调整显示屏MIPI频率来避免屏下指纹模组因电磁干扰而影响指纹图像采集的准确度和稳定性，提高电子设备采集指纹图像的准确度和稳定性。
与上述图2所示的实施例一致的，请参阅图4，图4是本申请实施例提供的一种电磁干扰控制方法的流程示意图，应用于电子设备，如图所示，本电磁干扰控制方法包括：
S401，电子设备在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
S402，所述电子设备在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；
S403，所述电子设备查询预设的映射关系集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
S404，所述电子设备根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
S405，所述电子设备获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；
S406，所述电子设备调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
此外，电子设备针对显示屏的不同显示状态，可以预设不同的MIPI频率可调范围，从而可以根据该频率范围确定更加适配当前显示状态的目标频率值，实现在降低或避免电磁干扰的同时，均衡系统性能，具体的，在息屏显示状态下，可以降低能耗，在亮屏显示状态下，可以保证显示效果和用户体验。
与上述图2、图3、图4所示的实施例一致的，请参阅图5，图5是本申请实施例提供的一种电子设备500的结构示意图，如图所示，所述电子设备500包括应用处理器510、 存储器520、通信接口530以及一个或多个程序521，其中，所述一个或多个程序521被存储在上述存储器520中，并且被配置由上述应用处理器510执行，所述一个或多个程序521包括用于执行以下步骤的指令：
在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
在一个可能的示例中，在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面，所述程序中的指令具体用于执行以下操作：确定所述显示屏的MIPI频率的目标频率值；以及将所述显示屏的MIPI频率调整为所述目标频率值。
在一个可能的示例中，在所述确定所述显示屏的MIPI频率的目标频率值方面，所述程序中的指令具体用于执行以下操作：获取所述显示屏的MIPI频率的可用频率范围或者可用频率值；以及根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
在一个可能的示例中，在所述获取所述显示屏的MIPI频率的可用频率范围或者可用频率值方面，所述程序中的指令具体用于执行以下操作：确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；以及查询预设的映射关系集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
在一个可能的示例中，在所述将所述显示屏的MIPI频率调整为所述目标频率值方面，所述程序中的指令具体用于执行以下操作：获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；以及调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
在一个可能的示例中，所述屏幕参数包括水平屏幕参数，所述水平屏幕参数包括以下至少一种：所述HBP、所述HFP和所述HAS；
所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的，所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
在一个可能的示例中，在所述检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述程序中的指令具体用于执行以下操作：检测所述屏下指纹模组的第一采样频率，以及检测所述显示屏的MIPI的第一频率；以及根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
在一个可能的示例中，在所述根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述程序中的指令具体用于执行以下操作：根据所述第一频率确定第一频率集合，所述第一频率集合包括所述第一频率和所述第一频率的至少一个分频和/或至少一个倍频；以及将所述第一采样频率与所述第一频率集合中的频率进行比对，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
上述主要从方法侧执行过程的角度对本申请实施例的方案进行了介绍。可以理解的是，电子设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所提供的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对电子设备进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
图6是本申请实施例中所涉及的电磁干扰控制装置600的功能单元组成框图。该电磁干扰控制装置600应用于电子设备，包括处理单元601和通信单元602，其中，
所述处理单元601，用于在检测到所述屏下指纹模组处于启动状态时，通过所述通信单元602检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；以及在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
其中，所述电磁干扰控制装置600还可以包括存储单元603，用于存储电子设备的程序代码和数据。所述处理单元601可以是处理器，所述通信单元602可以是触控显示屏或者收发器，存储单元603可以是存储器。
可以看出，本申请实施例中，电子设备包括显示屏和设置于显示屏的预设区域的屏下指纹模组，在检测到屏下指纹模组处于启动状态时，首先检测屏下指纹模组与显示屏是否发生电磁干扰，其中显示屏的预设区域处于点亮状态，其次，在检测到屏下指纹模组与显示屏发生电磁干扰时，针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频，显示屏MIPI频率可以调整至与屏下指纹模组不再发生干扰的频段，从而提高电子设备进行屏下指纹解锁的准确度和稳定性。
在一个可能的示例中，在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面，所述处理单元601具体用于：确定所述显示屏的MIPI频率的目标频率值；以及将所述显示屏的MIPI频率调整为所述目标频率值。
在一个可能的示例中，在所述确定所述显示屏的MIPI频率的目标频率值方面，所述处理单元601具体用于：获取所述显示屏的MIPI频率的可用频率范围或者可用频率值；以及根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
在一个可能的示例中，在所述获取所述显示屏的MIPI频率的可用频率范围或者可用频率值方面，所述处理单元601具体用于：确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；以及查询预设的映射关系 集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
在一个可能的示例中，在所述将所述显示屏的MIPI频率调整为所述目标频率值方面，所述处理单元601具体用于：获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；以及调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
在一个可能的示例中，所述屏幕参数包括水平屏幕参数，所述水平屏幕参数包括以下至少一种：所述HBP、所述HFP和所述HAS；
所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的，所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
在一个可能的示例中，在所述通过所述通信单元602检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述处理单元601具体用于：通过所述通信单元602检测所述屏下指纹模组的第一采样频率，以及通过所述通信单元602检测所述显示屏的MIPI的第一频率；以及根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
在一个可能的示例中，在所述根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述处理单元601具体用于：根据所述第一频率确定第一频率集合，所述第一频率集合包括所述第一频率和所述第一频率的至少一个分频和/或至少一个倍频；以及将所述第一采样频率与所述第一频率集合中的频率进行比对，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
本申请实施例还提供一种计算机存储介质，其中，该计算机存储介质存储用于电子数据交换的计算机程序，该计算机程序使得计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤，上述计算机包括电子设备。
本申请实施例还提供一种计算机程序产品，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括电子设备。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如上述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接， 可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储器中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储器中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例上述方法的全部或部分步骤。而前述的存储器包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储器中，存储器可以包括：闪存盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取器(英文：Random Access Memory，简称：RAM)、磁盘或光盘等。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种电磁干扰控制方法，其特征在于，应用于电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组，所述方法包括：
    在检测到所述屏下指纹模组处于启动状态时，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；
    在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
  2. 根据权利要求1所述的方法，其特征在于，所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作，包括：
    确定所述显示屏的MIPI频率的目标频率值；
    将所述显示屏的MIPI频率调整为所述目标频率值。
  3. 根据权利要求2所述的方法，其特征在于，所述确定所述显示屏的MIPI频率的目标频率值，包括：
    获取所述显示屏的MIPI频率的可用频率范围或者可用频率值；
    根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
  4. 根据权利要求3所述的方法，其特征在于，所述获取所述显示屏的MIPI频率的可用频率范围或者可用频率值，包括：
    确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；
    查询预设的映射关系集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
  5. 根据权利要求2-4任一项所述的方法，其特征在于，所述将所述显示屏的MIPI频率调整为所述目标频率值，包括：
    获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；
    调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
  6. 根据权利要求5所述的方法，其特征在于，所述屏幕参数包括水平屏幕参数，所述水平屏幕参数包括以下至少一种：所述HBP、所述HFP和所述HAS；
    所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的，所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，包括：
    检测所述屏下指纹模组的第一采样频率，以及检测所述显示屏的MIPI的第一频率；
    根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
  8. 根据权利要求7所述的方法，其特征在于，所述根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，包括：
    根据所述第一频率确定第一频率集合，所述第一频率集合包括所述第一频率和所述第一频率的至少一个分频和/或至少一个倍频；
    将所述第一采样频率与所述第一频率集合中的频率进行比对，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
  9. 根据权利要求8所述的方法，其特征在于，所述预设区域为与所述屏下指纹模组相邻的显示区域。
  10. 一种电磁干扰控制装置，其特征在于，应用于电子设备，所述电子设备包括显示屏和设置于所述显示屏的预设区域的屏下指纹模组，所述包括处理单元和通信单元，其中，
    所述处理单元，用于在检测到所述屏下指纹模组处于启动状态时，通过所述通信单元检测所述屏下指纹模组与所述显示屏是否发生电磁干扰，所述显示屏的所述预设区域处于点亮状态；以及在检测到所述屏下指纹模组与所述显示屏发生电磁干扰时，针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
  11. 根据权利要求10所述的装置，其特征在于，在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面，所述处理单元具体用于：确定所述显示屏的MIPI频率的目标频率值；以及将所述显示屏的MIPI频率调整为所述目标频率值。
  12. 根据权利要求11所述的装置，其特征在于，在所述确定所述显示屏的MIPI频率的目标频率值方面，所述处理单元具体用于：获取所述显示屏的MIPI频率的可用频率范围或者可用频率值；以及根据所述可用频率范围或者可用频率值，以及所述屏下指纹模组的第一采样频率，确定所述显示屏的MIPI频率的目标频率值。
  13. 根据权利要求12所述的装置，其特征在于，在所述获取所述显示屏的MIPI频率的可用频率范围或者可用频率值方面，所述处理单元具体用于：确定所述显示屏的显示状态，所述显示状态包括息屏显示状态和亮屏显示状态，所述息屏显示状态是指所述显示屏仅点亮所述预设区域的显示状态，所述亮屏显示状态是指所述显示屏全屏点亮的状态；以及查询预设的映射关系集合，获取所述显示屏的显示状态对应的MIPI频率的可用频率范围或者可用频率值，所述映射关系集合包括显示状态与MIPI频率的可用频率范围或者可用频率值之间的对应关系。
  14. 根据权利要求10所述的装置，其特征在于，在所述将所述显示屏的MIPI频率调整为所述目标频率值方面，所述处理单元具体用于：获取预配置的所述目标频率值所关联的屏幕参数的目标值，所述目标值关联参考值，所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的，所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值，所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值：水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS；以及调整所述屏幕参数的值为所述目标值，以及调整所述显示屏的MIPI频率为所述目标频率值。
  15. 根据权利要求14所述的装置，其特征在于，所述屏幕参数包括水平屏幕参数，所述水平屏幕参数包括以下至少一种：所述HBP、所述HFP和所述HAS；
    所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的，所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
  16. 根据权利要求10-15任一项所述的装置，其特征在于，在所述检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述处理单元具体用于：检测所述屏下指纹模 组的第一采样频率，以及检测所述显示屏的MIPI的第一频率；以及根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
  17. 根据权利要求16所述的装置，其特征在于，在所述根据所述第一采样频率和所述第一频率，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰方面，所述处理单元具体用于：根据所述第一频率确定第一频率集合，所述第一频率集合包括所述第一频率和所述第一频率的至少一个分频和/或至少一个倍频；以及将所述第一采样频率与所述第一频率集合中的频率进行比对，检测所述屏下指纹模组与所述显示屏是否发生电磁干扰。
  18. 根据权利要求17所述的装置，其特征在于，所述预设区域为与所述屏下指纹模组相邻的显示区域。
  19. 一种电子设备，其特征在于，包括处理器、存储器、通信接口，以及一个或多个程序，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如权利要求1-9任一项所述的方法中的步骤的指令。
  20. 一种计算机可读存储介质，其特征在于，存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如权利要求1-9任一项所述的方法。
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