CN110298316A - Fingerprint identification method and Related product - Google Patents
Fingerprint identification method and Related product Download PDFInfo
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- CN110298316A CN110298316A CN201910581178.2A CN201910581178A CN110298316A CN 110298316 A CN110298316 A CN 110298316A CN 201910581178 A CN201910581178 A CN 201910581178A CN 110298316 A CN110298316 A CN 110298316A
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- mould group
- background image
- fingerprint
- display screen
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- 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
- G06V40/1347—Preprocessing; Feature extraction
- G06V40/1359—Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop
-
- 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
- G06V40/1365—Matching; Classification
Abstract
The embodiment of the present application discloses a kind of fingerprint identification method and Related product, is applied to electronic equipment, and the electronic equipment includes ultrasonic fingerprint identification mould group and touching display screen, and the ultrasonic fingerprint identification mould group is integrated in the lower section of the touching display screen；Wherein method includes: to detect battery temperature every prefixed time interval, when the absolute value of difference is greater than preset threshold between current battery temperature and upper primary battery temperature, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object and be bonded the touching display screen；When the fingerprint collecting region is bonded the touching display screen there is no the default object, background image acquisition is carried out, target background image is obtained, using the target background image as current finger print background image.Fingerprint recognition efficiency can be promoted in temperature change using the embodiment of the present application.
Description
Technical field
This application involves technical field of electronic equipment, and in particular to a kind of fingerprint identification method and Related product.
Background technique
With a large amount of popularization and applications of electronic equipment (such as mobile phone, tablet computer), what electronic equipment can be supported is answered
With more and more, function is stronger and stronger, and electronic equipment develops towards diversification, personalized direction, becomes in user's life
Indispensable appliance and electronic.
Fingerprint identification technology also becomes the standard configuration technology of electronic equipment, with the development of fingerprint identification technology, at present,
Ultrasonic fingerprint identification technology is increasingly by the favor of supplier, still, due to ultrasonic fingerprint identification mould group to temperature compared with
It is then likely to reduce fingerprint recognition efficiency in temperature change for sensitivity.
Summary of the invention
The embodiment of the present application provides a kind of fingerprint identification method and Related product, can be in temperature change, and promotion refers to
Line recognition efficiency.
In a first aspect, the embodiment of the present application provides a kind of electronic equipment, the electronic equipment includes processing circuit, Yi Jiyu
The ultrasonic fingerprint identification mould group and temperature detection sensor of the processing circuit connection, wherein
The temperature detection sensor, for detecting battery temperature every prefixed time interval；
The ultrasonic fingerprint identifies mould group, between current battery temperature and upper primary battery temperature difference it is exhausted
When being greater than preset threshold to value, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object patch
Close the touching display screen；And there is no the default objects to be bonded the touching display screen in the fingerprint collecting region
When, background image acquisition is carried out, target background image is obtained；
The processing circuit, for using the target background image as current finger print background image.
Second aspect, the embodiment of the present application provide a kind of fingerprint identification method, are applied to electronic equipment, the electronic equipment
Identify that mould group and touching display screen, the ultrasonic fingerprint identification mould group are integrated in the touching display screen including ultrasonic fingerprint
Lower section；The described method includes:
Battery temperature, the difference between current battery temperature and upper primary battery temperature are detected every prefixed time interval
When absolute value is greater than preset threshold, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object
It is bonded the touching display screen；
When the fingerprint collecting region is bonded the touching display screen there is no the default object, background image is carried out
Acquisition, obtains target background image, using the target background image as current finger print background image.
The third aspect, the embodiment of the present application provide a kind of fingerprint identification device, are applied to electronic equipment, and the electronics is set
Standby includes ultrasonic fingerprint identification mould group and touching display screen, and the ultrasonic fingerprint identification mould group is integrated in the touch-control and shows
The lower section of screen；Described device includes: detection unit and acquisition unit, wherein
The detection unit, for detecting battery temperature every prefixed time interval, in current battery temperature and upper primary
When the absolute value of difference is greater than preset threshold between battery temperature, the fingerprint collecting area of the ultrasonic fingerprint identification mould group is detected
Domain whether there is default object and be bonded the touching display screen；
The acquisition unit is shown for being bonded the touch-control there is no the default object in the fingerprint collecting region
When screen, background image acquisition is carried out, target background image is obtained, using the target background image as current finger print Background
Picture.
Fourth aspect, the embodiment of the present application provide a kind of electronic equipment, including processor, memory, communication interface and
One or more programs, wherein said one or multiple programs are stored in above-mentioned memory, and are configured by above-mentioned
It manages device to execute, above procedure is included the steps that for executing the instruction in the embodiment of the present application second aspect.
5th aspect, the embodiment of the present application provide a kind of computer readable storage medium, wherein above-mentioned computer-readable
Storage medium storage is used for the computer program of electronic data interchange, wherein above-mentioned computer program executes computer such as
Step some or all of described in the embodiment of the present application second aspect.
6th aspect, the embodiment of the present application provide a kind of computer program product, wherein above-mentioned computer program product
Non-transient computer readable storage medium including storing computer program, above-mentioned computer program are operable to make to calculate
Machine executes the step some or all of as described in the embodiment of the present application second aspect.The computer program product can be one
A software installation packet.
Implement the embodiment of the present application, have it is following the utility model has the advantages that
As can be seen that fingerprint identification method and Related product described in the embodiment of the present application, are applied to electronic equipment,
The electronic equipment includes ultrasonic fingerprint identification mould group and touching display screen, and ultrasonic fingerprint identification mould group is integrated in touch-control and shows
Battery temperature, the difference between current battery temperature and upper primary battery temperature are detected every prefixed time interval in the lower section of screen
Absolute value when being greater than preset threshold, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether there is default object patch
Touching display screen is closed, when default object sticking touch control display screen is not present in fingerprint collecting region, background image acquisition is carried out, obtains
To target background image, using target background image as current finger print background image, so, it is possible in temperature change, in time
Background image is updated, the quality for promoting collected fingerprint image and fingerprint recognition efficiency are facilitated.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Figure 1A is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application；
Figure 1B is the structural schematic diagram of another electronic equipment provided by the embodiments of the present application；
Fig. 1 C is a kind of flow diagram of fingerprint identification method provided by the embodiments of the present application；
Fig. 1 D is a kind of demonstration schematic diagram in fingerprint collecting region provided by the embodiments of the present application；
Fig. 2 is the flow diagram of another fingerprint identification method provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application；
Fig. 4 A is a kind of functional unit composition block diagram of fingerprint identification device provided by the embodiments of the present application；
Fig. 4 B is the functional unit composition block diagram of another fingerprint identification device provided by the embodiments of the present application；
Fig. 4 C is the functional unit composition block diagram of another fingerprint identification device provided by the embodiments of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.
The description and claims of this application and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing
Different objects, are not use to describe a particular order.In addition, term " includes " and " having " and their any deformations, it is intended that
It is to cover and non-exclusive includes.Such as the process, method, system, product or equipment for containing a series of steps or units do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap
Include other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Electronic equipment involved by the embodiment of the present application may include the various handheld devices with wireless communication function,
Mobile unit, wearable device (smartwatch, Intelligent bracelet, wireless headset, augmented reality/virtual reality device, Brilliant Eyes
Mirror), calculate equipment or be connected to radio modem other processing equipments and various forms of user equipment (user
Equipment, UE), mobile station (mobile station, MS), terminal device (terminal device) etc..For convenience
Description, apparatus mentioned above are referred to as electronic equipment.
It describes in detail below to the embodiment of the present application.
Figure 1A is please referred to, Figure 1A is the structural schematic diagram of a kind of electronic equipment disclosed in the embodiment of the present application, electronic equipment
100 include storage and processing circuit 110, and the sensor 170 connecting with the storage and processing circuit 110, in which:
Electronic equipment 100 may include control circuit, which may include storage and processing circuit 110.This is deposited
Storage and processing circuit 110 can store device, such as hard drive memory, nonvolatile memory (such as flash memory or it is used for shape
At other electrically programmable read only memories etc. of solid state drive), volatile memory (such as either statically or dynamically arbitrary access
Memory etc.) etc., the embodiment of the present application is with no restriction.Processing circuit in storage and processing circuit 110 can be used for controlling electricity
The operating of sub- equipment 100.The processing circuit can microprocessor based on one or more, microcontroller, digital signal processor,
Baseband processor, power management unit, audio codec chip, specific integrated circuit, display-driver Ics etc. come
It realizes.
Storage and processing circuit 110 can be used for running the software in electronic equipment 100, such as the Internet browser application journey
Sequence, voice over internet protocol (Voice over Internet Protocol, VOIP) call application program, Email
Application program, media play-back application, operation system function etc..These softwares can be used for executing some control operations, example
Such as, based on the Image Acquisition of camera, the ambient light measurement based on ambient light sensor, based on proximity sensor close to sensing
Device measurement, the information display function that the positioning indicators such as status indicator lamp based on light emitting diode are realized, based on touch
The touch event of sensor detects, and in the associated function of multiple (such as layering) display information displayed on screen, with execution
The associated operation of wireless communication function, operation associated with collecting and generating audio signal, is pressed with collection and treatment button
Other functions etc. in the associated control operation of event data and electronic equipment 100 are pressed, the embodiment of the present application does not limit
System.
Electronic equipment 100 may include input-output circuit 150.Input-output circuit 150 can be used for making electronic equipment
100 realization data are output and input, i.e. permission electronic equipment 100 allows electronic equipment from outer equipment receiving data and also
100 export data to external equipment from electronic equipment 100.Input-output circuit 150 may further include sensor 170.
Sensor 170 may include ultrasonic fingerprint identification mould group, can also include ambient light sensor, close based on light and capacitor
Sensor, touch sensor is (for example, be based on light touch sensor and/or capacitive touch sensors, wherein touch sensor
The a part that can be touching display screen can also be used as a touch sensor arrangement and independently use), acceleration transducer,
With other sensors etc., ultrasonic fingerprint identification mould group be can integrate below screen, is not limited thereto, the ultrasonic fingerprint
Identification mould group can be used for acquiring fingerprint image.Sensor can also include temperature sensor, can be used for detecting battery temperature
Degree.
Input-output circuit 150 can also include one or more display screens, such as display screen 130.Display screen 130 can
To include liquid crystal display, organic light-emitting diode (OLED) display screen, electric ink display screen, plasma panel, using other aobvious
Show combination one or several kinds of in the display screen of technology.Display screen 130 may include touch sensor array (that is, display screen
130 can be touching display screen).Touch sensor can be by transparent touch sensor electrode (such as tin indium oxide (ITO)
Electrode) capacitive touch sensors that array is formed, or it can be the touch sensor formed using other touching techniques, example
Such as sound wave touch-control, pressure sensible touch, resistive touch, optical touch etc., the embodiment of the present application is with no restriction.
Electronic equipment 100 can also include audio component 140.Audio component 140 can be used for providing for electronic equipment 100
Audio input and output function.Audio component 140 in electronic equipment 100 may include loudspeaker, microphone, buzzer, sound
Adjust generator and other for generating and detecting the component of sound.
Telecommunication circuit 120 can be used for providing the ability with external device communication for electronic equipment 100.Telecommunication circuit 120
It may include analog- and digital- input-output interface circuit, and the radio communication circuit based on radiofrequency signal and/or optical signal.
Radio communication circuit in telecommunication circuit 120 may include radio-frequency transceiver circuitry, power amplifier circuit, low noise amplification
Device, switch, filter and antenna.For example, the radio communication circuit in telecommunication circuit 120 may include for passing through transmitting
The circuit of near-field communication (Near Field Communication, NFC) is supported with near-field coupling electromagnetic signal is received.Example
Such as, telecommunication circuit 120 may include near-field communication aerial and near-field communication transceiver.Telecommunication circuit 120 can also include honeycomb
Telephone transceiver and antenna, wireless lan transceiver circuit and antenna etc..
Electronic equipment 100 can further include battery, power management circuitry and other input-output units 160.It is defeated
Enter-output unit 160 may include button, control stick, click wheel, scroll wheel, touch tablet, keypad, keyboard, camera, hair
Optical diode and other positioning indicators etc..
User can input a command for the operation of controlling electronic devices 100 by input-output circuit 150, and can be with
Status information and other outputs from electronic equipment 100 are received using the output data of input-output circuit 150 to realize.
In a possible example, by taking ultrasonic fingerprint identification mould group is located at below screen as an example, as shown in Figure 1B, figure
1B is a kind of structural schematic diagram of electronic equipment, and electronic equipment 100 may include glass cover-plate (Cover glass) 210, display
Shield (OLED) 220, adhesive layer (Adhesive) 230, substrate (TFT Glass) 240, pixel layer (Pixel) 250, piezoelectric material
Layer (Copolymer) 260, Ag Ink layer 270, solidification glue-line (DAF) 280.Certainly, can also include above above-mentioned glass cover-plate
Film layer (film), film layer can be tempering film, be used to protect the display screen of electronic equipment.
Further, ultrasonic fingerprint identification mould group may include: Glass layer of TFT, Pixel layers, Ink layers of Ag and coagulate
Solid glue layer.Glass layers of TFT for metal wiring, material coating；Pixel layers, for the Metal electricity on TFT Glass
Piezoelectric energy-conversion material is also as ultrasonic wave transmitting/received cathode, Copolymer in pole, can " material deformation-voltage " phase
Mutually conversion；Ink layers of Ag, it is used as ultrasonic wave transmitting/received anode；DAF is freezing plastic, for protecting ultrasonic fingerprint to identify
Mould group；Adhesive layers are to identify mould group station in the viscose glue of OLED screen bottom ultrasonic fingerprint.
In the specific implementation, ultrasonic fingerprint identification mould group may include 2 states, TX state (for emitting ultrasonic wave) and
RX state (for receiving ultrasonic wave).
Under TX state, pass through electrode (Pixel negative electrode and the Ag Ink positive electricity at Copolymer (piezoelectric material) both ends
Pole) high-frequency (usually 10MHz rank) oscillator signal, such as sine wave are provided, Copolymer can generate the vibration of response frequency
And ultrasonic wave is issued, the ultrasonic wave transmitted upwards reaches the fingerprint contacted with screen surface, due to fingerprint after through OLED screen
When paddy ridge is bonded with screen, since the acoustic resistance characteristic and screen surfaces glass acoustic resistance different from those of the air in fingerprint valley are larger, refer to
The acoustic resistance characteristic of the skin histology of wrinkle ridge and screen surfaces glass acoustic resistance property difference are relatively large, and therefore, fingerprint valley ridge is to ultrasound
The reflected signal strength of wave is different.
Under RX state, ultrasonic fingerprint identification mould group is reached when reflected ultrasonic wave again passes through display screen
After (Pixel-Copolymer-Ag Ink), Copolymer vibration is caused to generate electric signal, the fingerprint valley ridge of different location is corresponding
The region pixel Copolymer oscillation intensity it is of different sizes, therefore the potential difference that receives of different location Pixel also not phase
With (Ag Ink is equipotential), potential difference is converted into two-dimensional picture signal, thus obtains ultrasonic fingerprint image.
Based on electronic equipment described in above-mentioned Figure 1A and Figure 1B, following function can be used to implement:
The temperature detection sensor, for detecting battery temperature every prefixed time interval；
The ultrasonic fingerprint identifies mould group, between current battery temperature and upper primary battery temperature difference it is exhausted
When being greater than preset threshold to value, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object patch
Close the touching display screen；And there is no the default objects to be bonded the touching display screen in the fingerprint collecting region
When, background image acquisition is carried out, target background image is obtained；
The processing circuit, for using the target background image as current finger print background image.
In a possible example, the ultrasonic fingerprint identification mould group is specifically used for:
When the fingerprint collecting region is bonded the touching display screen there are the default object, temporarily ceases and carried on the back
Scape Image Acquisition.
In a possible example, in terms of the progress background image acquisition, the ultrasonic fingerprint identifies mould group
It is specifically used for:
According to the mapping relations between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group, really
Determine the corresponding first object running parameter of the current battery temperature；
Background image acquisition is carried out with the first object running parameter.
In a possible example, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether
In terms of being bonded the touching display screen there are default object, the ultrasonic fingerprint identification mould group is specifically used for:
Determine the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen；
Institute is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
State corresponding second target operating parameters of target range；
Identify that mould group detects the fingerprint collecting region with second target operating parameters by the ultrasonic fingerprint
The touching display screen is bonded with the presence or absence of default object.
In a possible example, institute's ultrasonic fingerprint identification mould group also particularly useful for:
After described state using the target background image as current finger print background image, emit ultrasonic wave, and receive
Reflected target ultrasonic wave；
The processing circuit is also used to generate original fingerprint image according to the target ultrasonic wave；And according to the original
Beginning fingerprint image and the target background image are handled, and target fingerprint image is obtained.
As can be seen that electronic equipment described in the embodiment of the present application, which includes ultrasonic fingerprint identification
Mould group and touching display screen, ultrasonic fingerprint identification mould group are integrated in the lower section of touching display screen, examine every prefixed time interval
Battery temperature is surveyed, when the absolute value of difference is greater than preset threshold between current battery temperature and upper primary battery temperature, detection
Ultrasonic fingerprint identifies that the fingerprint collecting region of mould group whether there is default object sticking touch control display screen, in fingerprint collecting region
There is no when default object sticking touch control display screen, background image acquisition is carried out, target background image is obtained, by target background figure
As being used as current finger print background image, so, it is possible in temperature change, timely update background image, helps to promote acquisition
The quality and fingerprint recognition efficiency of the fingerprint image arrived.
Fig. 1 C is please referred to, Fig. 1 C is a kind of flow diagram of fingerprint identification method provided by the embodiments of the present application, is such as schemed
Shown, applied to electronic equipment as shown in Figure 1A, the electronic equipment includes that ultrasonic fingerprint identification mould group and touch-control are shown
Screen, the ultrasonic fingerprint identification mould group are integrated in the lower section of the touching display screen, this fingerprint identification method includes:
101, battery temperature is detected every prefixed time interval, it is poor between current battery temperature and upper primary battery temperature
When the absolute value of value is greater than preset threshold, the fingerprint collecting region of the ultrasonic fingerprint identification mould group is detected with the presence or absence of default
Object is bonded the touching display screen.
Wherein, above-mentioned prefixed time interval, preset threshold can be by user's self-setting or system defaults.Electronic equipment
Temperature sensor can be set, battery temperature can detecte by temperature sensor.Default object can be the screen of electronic equipment
Covering above curtain or protective film, default object can be following at least one: finger, clothes, books, hair, knapsack
Etc., it is not limited thereto.Ultrasonic fingerprint identification mould group can integrate below display screen, and as shown in figure iD, ultrasonic wave refers to
Line identification mould group corresponds to fingerprint collecting region, and fingerprint collecting region corresponds to the touch area of all or part of touching display screen,
Fingerprint collecting region, which can be realized, carries out fingerprint collecting to one or more finger.
In the specific implementation, electronic equipment can control ultrasonic fingerprint and identify mould when touching display screen is by finger touch
Group transmitting ultrasonic wave, and reflected target ultrasonic wave is received, original fingerprint image is generated according to target ultrasonic wave, according to original
Beginning fingerprint image, default background image are handled, and obtain preset fingerprint template, i.e. preset fingerprint template is to pass through original fingerprint
Image subtracts what default background image obtained, certainly, in subsequent fingerprint unlock, and first subtracts an original fingerprint image
Background image obtains the fingerprint image for unlocked by fingerprint.
In the specific implementation, electronic equipment can every prefixed time interval detect battery temperature, current battery temperature with
When the absolute value of difference is greater than preset threshold between last battery temperature, then it can detecte the finger of ultrasonic fingerprint identification mould group
Line pickup area whether there is default object and be fitted in touch screen display screen.
In a possible example, above-mentioned steps 101 detect the fingerprint collecting area of the ultrasonic fingerprint identification mould group
Domain whether there is default object and be bonded the touching display screen, may include steps of:
11, the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen is determined；
12, it is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
Corresponding second target operating parameters of the target range；
13, identify that mould group detects the fingerprint collecting area with second target operating parameters by the ultrasonic fingerprint
Domain whether there is default object and be bonded the touching display screen.
Wherein, the running parameter of ultrasonic fingerprint identification mould group can be following at least one: ultrasonic fingerprint identifies mould
The transmission power of group, the direction of the launch of ultrasonic fingerprint identification mould group, the working frequency of ultrasonic fingerprint identification mould group, ultrasonic wave
The work of the operating current of fingerprint recognition mould group, the operating voltage of ultrasonic fingerprint identification mould group and ultrasonic fingerprint identification mould group
Power etc. is not limited thereto.
In the specific implementation, the work of preset distance with ultrasonic fingerprint identification mould group can be stored in advance in electronic equipment
Mapping relations between parameter, electronic equipment are determining between ultrasonic fingerprint identification mould group and the surface of touching display screen
Target range can determine corresponding second target operating parameters of target range according to the mapping relations, pass through ultrasonic fingerprint
Identify that mould group whether there is default object sticking touch control display screen with the second target operating parameters detection fingerprint collecting region, such as
This, can be avoided other objects for detecting touching display screen overhead.
102, when the fingerprint collecting region is bonded the touching display screen there is no the default object, background is carried out
Image Acquisition obtains target background image, using the target background image as current finger print background image.
It, then can be in the specific implementation, when the surface of default object sticking touch control display screen is not present in fingerprint collecting region
Background image acquisition is carried out, target background image is obtained, using target background image as current finger print background image, due to not having
Default object sticking touch control display screen, target background image only reflect that screen surface is empty state.
In a possible example, after above-mentioned steps 101, it can also include the following steps:
When the fingerprint collecting region is bonded the touching display screen there are the default object, temporarily ceases and carried on the back
Scape Image Acquisition.
Wherein, if including default object due to fingerprint collecting region, then presetting object can be as one of background image
Point, since default object is not belonging to electronic equipment, default object is easily separated from, and after the disengaging of default object, background image is then
It can change, thus, when causing acquisition fingerprint image, still use the background image in the presence of default object to generate fingerprint image
Picture reduces fingerprint recognition efficiency in this way, impurity can be brought to fingerprint image, and certainly, default object itself is used as a kind of impurity,
Also it can have a certain impact to background image or fingerprint image, there are if default object, then can reduce fingerprint recognition efficiency.
In the specific implementation, carry out Background can be temporarily ceased when fingerprint collecting region has default object sticking touch control display screen
As acquisition, Non-precondition object is waited, then carries out background image acquisition.
Under illustration, electronic equipment may include application processor AP and ultrasonic fingerprint identification mould group, and ultrasonic wave refers to
Line identification mould group may include ARM control chip, and ARM control chip can periodically detect battery temperature, recognize this inspection
The battery temperature of survey and the temperature change of last detection are more than a certain range, then can detecte fingerprint collecting region whether there is
Foreign matter (default object) sticking touch control display screen resurveys background image if nothing, by its current fingerprint background image,
Current background image is obtained if so, can then suspend.
In a possible example, above-mentioned steps 102 carry out background image acquisition, may include steps of:
21, it is closed according to the mapping between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group
System, determines the corresponding first object running parameter of the current battery temperature；
22, it controls the ultrasonic fingerprint identification mould group and background image acquisition is carried out with the first object running parameter.
Wherein, the running parameter of ultrasonic fingerprint identification mould group can be following at least one: ultrasonic fingerprint identifies mould
The transmission power of group, the direction of the launch of ultrasonic fingerprint identification mould group, the working frequency of ultrasonic fingerprint identification mould group, ultrasonic wave
The work of the operating current of fingerprint recognition mould group, the operating voltage of ultrasonic fingerprint identification mould group and ultrasonic fingerprint identification mould group
Power etc. is not limited thereto.
In the specific implementation, preset battery temperature and ultrasonic fingerprint identification mould group can be stored in advance in electronic equipment
Mapping relations between running parameter, in turn, electronic equipment can determine that current battery temperature is corresponding according to the mapping relations
First object running parameter, control ultrasonic fingerprint identification mould group carry out background image acquisition with first object running parameter, such as
This, can obtain the running parameter of the ultrasonic fingerprint identification mould group suitable with battery temperature, can be promoted to a certain extent
Ultrasonic fingerprint identifies the collecting efficiency of mould group, for example, battery temperature is low, then the hair of ultrasonic fingerprint identification mould group can be turned up
Penetrate power.
In a possible example, above-mentioned steps 102, using the target background image as current finger print background image
Later, can also include the following steps
A1, the control ultrasonic fingerprint identification mould group emit ultrasonic wave, and receive reflected target ultrasonic wave；
A2, original fingerprint image is generated according to the target ultrasonic wave；
A3, it is handled according to the original fingerprint image and the target background image, obtains target fingerprint image.
Wherein, electronic equipment can control ultrasonic fingerprint identification mould group and carry out transmitting ultrasonic wave, and receive the ultrasonic wave
The target ultrasonic wave fired back.It, then can be according to mesh since the ultrasonic wave received embodies the change of divergence of fingerprint lines
It marks ultrasonic wave and generates original fingerprint image.Target background image is in the case that default object is not present in fingerprint collecting region, to adopt
The image collected, electronic equipment can be handled original fingerprint image, target background image, obtain target fingerprint image,
For example, original fingerprint image, which subtracts target background image, obtains target fingerprint image.
In a possible example, above-mentioned steps A2 generates the first fingerprint image according to the target ultrasonic wave, can be with
Include the following steps:
A21, the target ultrasonic wave is subjected to analog-to-digital conversion, obtains digital signal；
A22, the target number signal is subjected to quantification treatment, obtains quantization digital signal；
A23, the quantization digital signal is subjected to binary conversion treatment, obtains binaryzation digital signal；
A24, the binaryzation digital signal is subjected to interpolation arithmetic, obtains the original fingerprint image.
Wherein, target ultrasonic wave is due to being sound wave, initial conditions are analog signal, and electronic equipment can be by target
Ultrasonic wave carries out analog-to-digital conversion, obtains digital signal, it is generally the case that image has 0~255 grayscale value, therefore, can be to mesh
It marks digital signal and carries out quantification treatment, obtain quantization digital signal, then binary conversion treatment is carried out to quantization digital signal, obtain two
Value digital signal further can also carry out interpolation arithmetic to binaryzation digital signal, obtain original fingerprint image, interpolation fortune
Calculating can be linear interpolation arithmetic or non-linear interpolation operation, it is, of course, also possible to original fingerprint image carries out noise reduction process, or
Person, image enhancement processing.
In a possible example, above-mentioned steps 103 are carried out according to first fingerprint image, default background image
Processing, obtains preset fingerprint template, may include steps of:
31, target environment temperature is obtained；
32, according to the mapping relations between preset environment temperature and background image, selection and institute are concentrated from background image
State the corresponding default background image of target environment temperature；
33, the original fingerprint image is subtracted into the default background image, obtains the preset fingerprint template.
Wherein, Background image set can be stored in advance in electronic equipment, which includes multiple background images, often
One background image can correspond to an environment temperature, and electronic equipment can carry out background image acquisition every prefixed time interval,
Background image set is obtained, prefixed time interval can be by user's self-setting or system default.Temperature can be set in electronic equipment
Sensor is spent, can detecte environment temperature using temperature sensor, alternatively, temperature can may be implemented by weather application APP
Detection.The mapping relations between preset environment temperature and background image can be stored in advance in electronic equipment, in turn, foundation should
Mapping relations are concentrated from background image and choose default background image corresponding with target environment temperature, and original fingerprint image subtracts pre-
If background image, preset fingerprint template is obtained.
In a possible example, after above-mentioned steps A3, it can also include the following steps:
B1, the target fingerprint image is matched with preset fingerprint template；
B2, the target fingerprint image and the preset fingerprint template matching success when, execute unlock operation.
Wherein, unlock operation can be following at least one: enter homepage by screen locking or blank screen, alternatively, by screen locking
Or the default application of blank screen starting, alternatively, executing predetermined registration operation, predetermined registration operation can be following at least one: delete operation is repaired
Change operation, squeeze operation, choose operation, photographing operation, delivery operation etc., is not limited thereto.In the specific implementation, in target
When fingerprint image is with the success of preset fingerprint template matching, then unlock operation can be executed, conversely, in target fingerprint image and presetting
Fingerprint template then prompts user fingerprints recognition failures when it fails to match, alternatively, prompt user re-starts fingerprint input.
In a possible example, above-mentioned steps B1 be may include steps of:
B11, image segmentation is carried out to the target fingerprint image, obtains target fingerprint area image；
The characteristic point distribution of B12, the analysis target fingerprint area image；
B13, circular image interception is carried out to the target fingerprint area image according to a not concentric of M, obtains M circle
Finger-print region image, the M are the integer greater than 3；
B14, target circle finger-print region image is selected from described M round finger-print region image, the target is round
The quantity for the characteristic point that finger-print region image is included is greater than other round fingerprint regions in described M round finger-print region image
Area image；
B15, the target circle finger-print region image is divided to obtain N number of annulus, the ring width of N number of annulus is identical；
B16, since N number of annulus the smallest annulus of radius, by N number of annulus successively with preset fingerprint template
Carry out Feature Points Matching, and the accumulative matching value for having matched annulus；
B17, stop carrying out Feature Points Matching immediately when accumulative matching value is greater than preset matching threshold value, and export fingerprint
Identify successful prompting message.
Wherein, electronic equipment can carry out image segmentation to target fingerprint image, obtain target fingerprint area image, into
And the characteristic point distribution of the target fingerprint area image is analyzed, the target fingerprint area image is carried out according to a not concentric of M
Circular image interception obtains M round finger-print region image, and M is the integer greater than 3, selects from M round finger-print region image
Target circle finger-print region image out, the quantity for the characteristic point that target circle finger-print region image is included are greater than M circle and refer to
Other round finger-print region images in line area image, divide target circle finger-print region image to obtain N number of annulus, N number of
The ring width of annulus is identical, and since N number of annulus the smallest annulus of radius, N number of annulus is successively carried out with preset fingerprint template
Feature Points Matching, and the accumulative matching value for having matched annulus, in this way, in fingerprint identification process, can by different location or
The characteristic point of different fingerprints is equivalent to and samples to entire fingerprint image, and the sampling can cover entire finger for matching
Line region, thus, corresponding characteristic features can be found from each region to be used to match, when accumulative matching value is big
Stop carrying out Feature Points Matching immediately when preset matching threshold value, and export the successful prompting message of fingerprint recognition, so, it is possible
Quickly and precisely identify fingerprint recognition.
As can be seen that fingerprint identification method described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment
Identify that mould group and touching display screen, ultrasonic fingerprint identification mould group are integrated in the lower section of touching display screen including ultrasonic fingerprint,
Battery temperature is detected every prefixed time interval, the absolute value of difference is big between current battery temperature and upper primary battery temperature
When preset threshold, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether there is default object sticking touch control and show
Screen carries out background image acquisition, obtains target background when default object sticking touch control display screen is not present in fingerprint collecting region
Image so, it is possible using target background image as current finger print background image in temperature change, and timely update Background
Picture facilitates the quality for promoting collected fingerprint image and fingerprint recognition efficiency.
Consistently with embodiment shown in above-mentioned Fig. 1 C, referring to Fig. 2, Fig. 2 is a kind of finger provided by the embodiments of the present application
The flow diagram of line recognition methods, as shown, being applied to electronic equipment as shown in Figure 1A, the electronic equipment includes super
Sound wave fingerprint recognition mould group and touching display screen, the ultrasonic fingerprint identification mould group are integrated under the touching display screen
Side；This fingerprint identification method includes:
201, battery temperature is detected every prefixed time interval, it is poor between current battery temperature and upper primary battery temperature
When the absolute value of value is greater than preset threshold, the fingerprint collecting region of the ultrasonic fingerprint identification mould group is detected with the presence or absence of default
Object is bonded the touching display screen.
202, when the fingerprint collecting region is bonded the touching display screen there is no the default object, background is carried out
Image Acquisition obtains target background image, using the target background image as current finger print background image.
203, it controls the ultrasonic fingerprint identification mould group and emits ultrasonic wave, and receive reflected target ultrasonic wave.
204, original fingerprint image is generated according to the target ultrasonic wave.
205, it is handled according to the original fingerprint image and the target background image, obtains target fingerprint image.
Wherein, the specific descriptions of above-mentioned steps 201- step 205 are referred to fingerprint recognition side described in above-mentioned Fig. 1 C
The corresponding steps of method, details are not described herein.
As can be seen that fingerprint identification method described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment
Mould group and touching display screen are identified including ultrasonic fingerprint, can not only be in temperature change, timely update background image, and
Fingerprint image can be obtained according to the updated background image, facilitate the quality for promoting collected fingerprint image, and
Fingerprint recognition efficiency.
Consistently with above-described embodiment, referring to Fig. 3, Fig. 3 is the knot of a kind of electronic equipment provided by the embodiments of the present application
Structure schematic diagram, as shown, the electronic equipment includes processor, memory, communication interface and one or more program, it is described
Electronic equipment includes ultrasonic fingerprint identification mould group and touching display screen, and the ultrasonic fingerprint identification mould group is integrated in the touching
The lower section of display screen is controlled, said one or multiple programs are stored in above-mentioned memory, and are configured by above-mentioned processor
It executes, in the embodiment of the present application, above procedure includes the instruction for executing following steps:
Battery temperature, the difference between current battery temperature and upper primary battery temperature are detected every prefixed time interval
When absolute value is greater than preset threshold, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object
It is bonded the touching display screen；
When the fingerprint collecting region is bonded the touching display screen there is no the default object, background image is carried out
Acquisition, obtains target background image, using the target background image as current finger print background image；
As can be seen that electronic equipment described in the embodiment of the present application, which includes ultrasonic fingerprint identification
Mould group and touching display screen, ultrasonic fingerprint identification mould group are integrated in the lower section of touching display screen, examine every prefixed time interval
Battery temperature is surveyed, when the absolute value of difference is greater than preset threshold between current battery temperature and upper primary battery temperature, detection
Ultrasonic fingerprint identifies that the fingerprint collecting region of mould group whether there is default object sticking touch control display screen, in fingerprint collecting region
There is no when default object sticking touch control display screen, background image acquisition is carried out, target background image is obtained, by target background figure
As being used as current finger print background image, so, it is possible in temperature change, timely update background image, helps to promote acquisition
The quality and fingerprint recognition efficiency of the fingerprint image arrived.
In a possible example, above procedure further includes the instruction for executing following steps:
When the fingerprint collecting region is bonded the touching display screen there are the default object, temporarily ceases and carried on the back
Scape Image Acquisition.
In a possible example, in terms of the progress background image acquisition, above procedure include for execute with
The instruction of lower step:
According to the mapping relations between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group, really
Determine the corresponding first object running parameter of the current battery temperature；
It controls the ultrasonic fingerprint identification mould group and background image acquisition is carried out with the first object running parameter.
In a possible example, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether
In terms of being bonded the touching display screen there are default object, above procedure includes the instruction for executing following steps:
Determine the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen；
Institute is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
State corresponding second target operating parameters of target range；
Identify that mould group detects the fingerprint collecting region with second target operating parameters by the ultrasonic fingerprint
The touching display screen is bonded with the presence or absence of default object.
In a possible example, it is described using the target background image as current finger print background image in terms of it
Afterwards, above procedure further includes the instruction for executing following steps:
The ultrasonic fingerprint identification mould group transmitting ultrasonic wave is controlled, and receives reflected target ultrasonic wave；
Original fingerprint image is generated according to the target ultrasonic wave；
It is handled according to the original fingerprint image and the target background image, obtains target fingerprint image.
It is above-mentioned that mainly the scheme of the embodiment of the present application is described from the angle of method side implementation procedure.It is understood that
, in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or software mould for electronic equipment
Block.Those skilled in the art should be readily appreciated that, in conjunction with each exemplary unit of embodiment description presented herein
And algorithm steps, the application can be realized with the combining form of hardware or hardware and computer software.Some function actually with
Hardware or computer software drive the mode of hardware to execute, the specific application and design constraint item depending on technical solution
Part.Professional technician can specifically realize described function to each using distinct methods, but this reality
Now it is not considered that exceeding scope of the present application.
The embodiment of the present application can carry out the division of functional unit according to above method example to electronic equipment, for example, can
With each functional unit of each function division of correspondence, two or more functions can also be integrated in a processing unit
In.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.It needs
It is noted that be schematical, only a kind of logical function partition to the division of unit in the embodiment of the present application, it is practical real
It is current that there may be another division manner.
Fig. 4 A is the functional unit composition block diagram of fingerprint identification device 400 involved in the embodiment of the present application.The fingerprint
Identification device 400, is applied to electronic equipment, and the electronic equipment includes ultrasonic fingerprint identification mould group and touching display screen, institute
State the lower section that ultrasonic fingerprint identification mould group is integrated in the touching display screen；Described device 400 includes: 401 He of detection unit
Acquisition unit 402, wherein
The detection unit 401, for detecting battery temperature every prefixed time interval, in current battery temperature and upper one
When the absolute value of difference is greater than preset threshold between primary cell temperature, the fingerprint collecting of the ultrasonic fingerprint identification mould group is detected
Region whether there is default object and be bonded the touching display screen；
The acquisition unit 402, for there is no the default objects to be bonded the touch-control in the fingerprint collecting region
When display screen, background image acquisition is carried out, target background image is obtained, using the target background image as current finger print background
Image；
As can be seen that fingerprint identification device described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment
Identify that mould group and touching display screen, ultrasonic fingerprint identification mould group are integrated in the lower section of touching display screen including ultrasonic fingerprint,
Battery temperature is detected every prefixed time interval, the absolute value of difference is big between current battery temperature and upper primary battery temperature
When preset threshold, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether there is default object sticking touch control and show
Screen carries out background image acquisition, obtains target background when default object sticking touch control display screen is not present in fingerprint collecting region
Image so, it is possible using target background image as current finger print background image in temperature change, and timely update Background
Picture facilitates the quality for promoting collected fingerprint image and fingerprint recognition efficiency.
In a possible example, as shown in Figure 4 B, Fig. 4 B is the another modification of fingerprint identification device shown in Fig. 4 A
Structure can also include: pause unit 403 compared with Fig. 4 A, specific as follows:
The pause unit, for there are the default objects to be bonded the touching display screen in the fingerprint collecting region
When, it temporarily ceases and carries out background image acquisition.
In a possible example, in terms of the progress background image acquisition, the acquisition unit 402 is specifically used
In:
According to the mapping relations between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group, really
Determine the corresponding first object running parameter of the current battery temperature；
It controls the ultrasonic fingerprint identification mould group and background image acquisition is carried out with the first object running parameter.
In a possible example, the fingerprint collecting region of detection ultrasonic fingerprint identification mould group whether
In terms of being bonded the touching display screen there are default object, the detection unit 401 is specifically used for:
Determine the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen；
Institute is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
State corresponding second target operating parameters of target range；
Identify that mould group detects the fingerprint collecting region with second target operating parameters by the ultrasonic fingerprint
The touching display screen is bonded with the presence or absence of default object.
In a possible example, as shown in Figure 4 C, Fig. 4 C is the another modification of fingerprint identification device shown in Fig. 4 A
Structure, compared with Fig. 4 A, control unit 404, generation unit 405 and processing unit 406 are specific as follows:
Control unit 404 for controlling the ultrasonic fingerprint identification mould group transmitting ultrasonic wave, and receives reflected
Target ultrasonic wave；
Generation unit 405, for generating original fingerprint image according to the target ultrasonic wave；
Processing unit 406 obtains mesh for being handled according to the original fingerprint image and the target background image
Mark fingerprint image.
It is understood that the function of each program module of the fingerprint identification device of the present embodiment can be according to above method reality
The method specific implementation in example is applied, specific implementation process is referred to the associated description of above method embodiment, herein no longer
It repeats.
The embodiment of the present application also provides a kind of computer storage medium, wherein computer storage medium storage is for electricity
The computer program of subdata exchange, the computer program make computer execute any as recorded in above method embodiment
Some or all of method step, above-mentioned computer include electronic equipment.
The embodiment of the present application also provides a kind of computer program product, and above-mentioned computer program product includes storing calculating
The non-transient computer readable storage medium of machine program, above-mentioned computer program are operable to that computer is made to execute such as above-mentioned side
Some or all of either record method step in method embodiment.The computer program product can be a software installation
Packet, above-mentioned computer includes electronic equipment.
It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the application is not limited by the described action sequence because
According to the application, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily the application
It is necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed device, it can be by another way
It realizes.For example, the apparatus embodiments described above are merely exemplary, such as the division of said units, it is only a kind of
Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit,
It can be electrical or other forms.
Above-mentioned unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If above-mentioned integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer-readable access to memory.Based on this understanding, the technical solution of the application substantially or
Person says that all or part of the part that contributes to existing technology or the technical solution can body in the form of software products
Reveal and, which is stored in a memory, including some instructions are used so that a computer equipment
(can be personal computer, server or network equipment etc.) executes all or part of each embodiment above method of the application
Step.And memory above-mentioned includes: USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), mobile hard disk, magnetic or disk.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in a computer-readable memory, memory
May include: flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access device (English:
Random Access Memory, referred to as: RAM), disk or CD etc..
The embodiment of the present application is described in detail above, specific case used herein to the principle of the application and
Embodiment is expounded, the description of the example is only used to help understand the method for the present application and its core ideas；
At the same time, for those skilled in the art can in specific embodiments and applications according to the thought of the application
There is change place, in conclusion the contents of this specification should not be construed as limiting the present application.
Claims (13)
1. a kind of electronic equipment, which is characterized in that the electronic equipment includes processing circuit, and is connect with the processing circuit
Ultrasonic fingerprint identification mould group and temperature detection sensor, wherein
The temperature detection sensor, for detecting battery temperature every prefixed time interval；
The ultrasonic fingerprint identifies mould group, the absolute value for the difference between current battery temperature and upper primary battery temperature
When greater than preset threshold, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object and be bonded institute
State touching display screen；And when the fingerprint collecting region is bonded the touching display screen there is no the default object, into
The acquisition of row background image, obtains target background image；
The processing circuit, for using the target background image as current finger print background image.
2. electronic equipment according to claim 1, which is characterized in that the ultrasonic fingerprint identification mould group is specifically used for:
When the fingerprint collecting region is bonded the touching display screen there are the default object, carry out Background is temporarily ceased
As acquisition.
3. electronic equipment according to claim 1 or 2, which is characterized in that in terms of the progress background image acquisition, institute
Ultrasonic fingerprint identification mould group is stated to be specifically used for:
According to the mapping relations between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group, institute is determined
State the corresponding first object running parameter of current battery temperature；
Background image acquisition is carried out with the first object running parameter.
4. electronic equipment according to claim 1-3, which is characterized in that in the detection ultrasonic fingerprint
Identify that the fingerprint collecting region of mould group whether there is default object and be bonded the touching display screen aspect, the ultrasonic fingerprint is known
Other mould group is specifically used for:
Determine the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen；
The mesh is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
Corresponding second target operating parameters of subject distance；
Identify whether mould group detects the fingerprint collecting region with second target operating parameters by the ultrasonic fingerprint
There are default objects to be bonded the touching display screen.
5. electronic equipment according to claim 1-4, which is characterized in that institute's ultrasonic fingerprint identifies mould group
Also particularly useful for:
After described state using the target background image as current finger print background image, emit ultrasonic wave, and receive reflection
Target ultrasonic wave back；
The processing circuit is also used to generate original fingerprint image according to the target ultrasonic wave；And according to the original finger
Print image and the target background image are handled, and target fingerprint image is obtained.
6. a kind of fingerprint identification method, which is characterized in that be applied to electronic equipment, the electronic equipment includes that ultrasonic fingerprint is known
Other mould group and touching display screen, the ultrasonic fingerprint identification mould group are integrated in the lower section of the touching display screen；The method
Include:
Battery temperature is detected every prefixed time interval, difference is absolute between current battery temperature and upper primary battery temperature
When value is greater than preset threshold, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group whether there is default object fitting
The touching display screen；
When the fingerprint collecting region is bonded the touching display screen there is no the default object, carries out background image and adopt
Collection, obtains target background image, using the target background image as current finger print background image.
7. according to the method described in claim 6, it is characterized in that, the method also includes:
When the fingerprint collecting region is bonded the touching display screen there are the default object, carry out Background is temporarily ceased
As acquisition.
8. method according to claim 6 or 7, which is characterized in that the progress background image acquisition, comprising:
According to the mapping relations between preset battery temperature and the running parameter of ultrasonic fingerprint identification mould group, institute is determined
State the corresponding first object running parameter of current battery temperature；
It controls the ultrasonic fingerprint identification mould group and background image acquisition is carried out with the first object running parameter.
9. according to the described in any item methods of claim 6-8, which is characterized in that the detection ultrasonic fingerprint identifies mould
The fingerprint collecting region of group whether there is default object and be bonded the touching display screen, comprising:
Determine the target range between the ultrasonic fingerprint identification mould group and the surface of the touching display screen；
The mesh is determined according to the mapping relations between preset distance and the running parameter of ultrasonic fingerprint identification mould group
Corresponding second target operating parameters of subject distance；
Identify whether mould group detects the fingerprint collecting region with second target operating parameters by the ultrasonic fingerprint
There are default objects to be bonded the touching display screen.
10. the method according to claim 6, which is characterized in that it is described using the target background image as
After current finger print background image, the method also includes:
The ultrasonic fingerprint identification mould group transmitting ultrasonic wave is controlled, and receives reflected target ultrasonic wave；
Original fingerprint image is generated according to the target ultrasonic wave；
It is handled according to the original fingerprint image and the target background image, obtains target fingerprint image.
11. a kind of fingerprint identification device, which is characterized in that be applied to electronic equipment, the electronic equipment includes ultrasonic fingerprint
Identify mould group and touching display screen, the ultrasonic fingerprint identification mould group is integrated in the lower section of the touching display screen；The dress
Set includes: detection unit and acquisition unit, wherein
The detection unit, for detecting battery temperature every prefixed time interval, in current battery temperature and upper primary battery
When the absolute value of difference is greater than preset threshold between temperature, the fingerprint collecting region for detecting the ultrasonic fingerprint identification mould group is
It is no to there is the default object fitting touching display screen；
The acquisition unit, for there is no the default objects to be bonded the touching display screen in the fingerprint collecting region
When, background image acquisition is carried out, target background image is obtained, using the target background image as current finger print background image.
12. a kind of electronic equipment, which is characterized in that including processor, memory, the memory is for storing one or more
Program, and be configured to be executed by the processor, described program includes for executing as described in claim any one of 6-10
Method in step instruction.
13. a kind of computer readable storage medium, which is characterized in that storage is used for the computer program of electronic data interchange,
In, the computer program makes computer execute such as the described in any item methods of claim 6-10.
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| TWI734586B (en) * | 2020-03-12 | 2021-07-21 | 大陸商敦泰電子(深圳)有限公司 | Method and device for removing background of optical fingerprint image |
| CN111738227A (en) * | 2020-07-31 | 2020-10-02 | 深圳市汇顶科技股份有限公司 | Ultrasonic fingerprint identification device and electronic equipment |
| CN111738227B (en) * | 2020-07-31 | 2021-04-23 | 深圳市汇顶科技股份有限公司 | Ultrasonic fingerprint identification device and electronic equipment |
| CN111813489A (en) * | 2020-08-11 | 2020-10-23 | Oppo（重庆）智能科技有限公司 | Screen protection display method and device and computer readable storage medium |
| CN114323593A (en) * | 2021-12-31 | 2022-04-12 | 深圳市汇顶科技股份有限公司 | Testing method and testing device for fingerprint detection device |
| CN114323593B (en) * | 2021-12-31 | 2024-03-15 | 深圳市汇顶科技股份有限公司 | Testing method and testing device of fingerprint detection device |
| CN117173818A (en) * | 2023-10-16 | 2023-12-05 | 东莞市安邦德智能锁具科技有限公司 | Intelligent lock using method based on fingerprint identification |
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