CN108920080B - Fingerprint scanning method, mobile terminal and storage medium - Google Patents
Fingerprint scanning method, mobile terminal and storage medium Download PDFInfo
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- CN108920080B CN108920080B CN201810686226.XA CN201810686226A CN108920080B CN 108920080 B CN108920080 B CN 108920080B CN 201810686226 A CN201810686226 A CN 201810686226A CN 108920080 B CN108920080 B CN 108920080B
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- 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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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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
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Abstract
The invention discloses a fingerprint scanning method, a mobile terminal and a storage medium, wherein the mobile terminal comprises a plurality of fingerprint scanning modules, and the method comprises the following steps: receiving touch operation triggered by a user through a touch screen; acquiring a touch area corresponding to the touch operation; activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module; the first fingerprint image is identified. According to the invention, the first fingerprint image is acquired through the first fingerprint scanning module corresponding to the touch area, so that the problems of low full-screen fingerprint scanning speed and high power consumption are solved.
Description
Technical Field
The present invention relates to the field of fingerprint scanning technologies, and in particular, to a fingerprint scanning method, a mobile terminal, and a storage medium.
Background
At present, only a specific part of a region can be scanned in a fingerprint scanning mode used on a mobile terminal, generally, a home key of a mobile phone or a specific region on the back of a battery cover is narrow in scanning area, extra space needs to be occupied, and the increase of the screen occupation ratio of the mobile terminal is not facilitated. The method for full-screen fingerprint scanning can solve the problems that a specific area is narrow in scanning area, extra space needs to be occupied, and the increase of the screen occupation ratio of the mobile terminal is not facilitated. Full-screen fingerprint scanning can scan fingerprint images at any position, and user experience is greatly improved.
However, full-screen fingerprint scanning generally uses an over-array to scan a fingerprint image, and a full-screen fingerprint scanning area is large, so that the scanning speed is low and the power consumption is high.
Disclosure of Invention
The invention provides a fingerprint scanning method, a mobile terminal and a storage medium, and aims to solve the problems of low full-screen fingerprint scanning speed and high power consumption.
In order to achieve the above object, the present invention provides a fingerprint scanning method, which is applied to a mobile terminal including a plurality of fingerprint scanning modules, and the method includes:
receiving touch operation triggered by a user through a touch screen;
acquiring a touch area corresponding to the touch operation;
activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module;
the first fingerprint image is identified.
Optionally, before the step of acquiring the touch area corresponding to the touch operation, the method further includes:
judging whether the touch operation is effective touch operation or not;
if the touch operation is an effective touch operation, executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch operation is not the effective touch operation, no response is made to the touch operation
Optionally, the step of determining whether the touch operation is a valid touch operation includes:
acquiring touch information of the touch operation, wherein the touch information comprises: duration and touch area;
if the touch information reaches a threshold value, judging that the touch operation is effective touch operation;
otherwise, if the touch information does not reach the threshold value, the touch operation is judged not to be the effective touch operation.
Optionally, after the step of determining that the touch operation is an effective touch operation if the touch information reaches the threshold, the method further includes:
if the touch screen is in a black screen state, lightening the touch screen, and then executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch screen is in a bright screen state, directly executing the following steps: and acquiring a touch area corresponding to the touch operation.
Optionally, the touch screen is divided into a plurality of areas in advance, each area corresponds to one fingerprint scanning module, and the step of activating the first fingerprint scanning module corresponding to the touch area includes:
determining a first fingerprint scanning module according to a preset condition;
and sending an activation instruction to the first fingerprint scanning module, and activating the first fingerprint scanning module by the activation instruction.
Optionally, the activating the fingerprint scanning module corresponding to the touch position further includes, after the step of scanning a fingerprint image by the fingerprint scanning module:
judging whether the area of the first fingerprint image reaches a preset fingerprint area or not;
if the area of the first fingerprint image reaches a preset fingerprint area, executing the following steps: identifying the first fingerprint image;
if the area of the first fingerprint image does not reach the preset area, activating the fingerprint scanning modules of one or more adjacent cells according to a preset sequence, and acquiring supplementary fingerprint images of the adjacent cells by the fingerprint scanning modules of the one or more adjacent cells;
splicing the first fingerprint image and the supplementary fingerprint image into a second fingerprint image until the area of the second fingerprint image reaches a preset area;
and identifying the second fingerprint image.
Optionally, the step of activating the first fingerprint scanning module corresponding to the touch area and acquiring the first fingerprint image by the first fingerprint scanning module further includes:
after the first fingerprint image is collected, a dormancy instruction is sent to the first fingerprint scanning module, and the first fingerprint scanning module enters a low-power-consumption dormancy state after receiving the dormancy instruction.
Optionally, the step of identifying the first fingerprint image comprises:
identifying the first fingerprint image according to a preset fingerprint identification model;
if the identification is successful, executing corresponding operation according to the user instruction;
and if the identification fails, prompting the user to trigger the touch operation again through the touch screen.
Further, to achieve the above object, the present invention also provides a mobile terminal, which includes a memory, a processor and a fingerprint scanning program stored on the memory, wherein the fingerprint scanning program implements the steps of the fingerprint scanning method as described above when being executed by the processor.
Further, to achieve the above object, the present invention also provides a computer readable storage medium, characterized in that the computer readable storage medium stores thereon a fingerprint scanning program, and the fingerprint scanning program is executed by a processor to implement the steps of the fingerprint scanning method as described above.
The calling method comprises the steps that through the technical scheme, touch operation triggered by a user through a touch screen is received; acquiring a touch area corresponding to the touch operation; activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module; the first fingerprint image is identified. Therefore, the first fingerprint image is collected through the first fingerprint scanning module corresponding to the touch area, and the problems of low full-screen fingerprint scanning speed and high power consumption are solved.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention;
fig. 2 is a diagram of a communication network system architecture according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a fingerprint scanning method according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a scene of an embodiment of a fingerprint scanning method according to the present invention;
FIG. 5 is a flowchart illustrating a fingerprint scanning method according to a second embodiment of the present invention;
FIG. 6 is a flowchart illustrating a fingerprint scanning method according to a third embodiment of the present invention;
fig. 7 is a schematic view of another embodiment of a fingerprint scanning method according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert voice data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (voice data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sound into voice data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as voice data, a phonebook, etc.) created according to the use of the cellular phone, etc. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
Further, in the mobile terminal 100 shown in fig. 1, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
receiving touch operation triggered by a user through a touch screen;
acquiring a touch area corresponding to the touch operation;
activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module;
the first fingerprint image is identified.
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
judging whether the touch operation is effective touch operation or not;
if the touch operation is an effective touch operation, executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch operation is not the effective touch operation, no response is made to the touch operation
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
acquiring touch information of the touch operation, wherein the touch information comprises: duration and touch area;
if the touch information reaches a threshold value, judging that the touch operation is effective touch operation;
otherwise, if the touch information does not reach the threshold value, the touch operation is judged not to be the effective touch operation.
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
if the touch screen is in a black screen state, lightening the touch screen, and then executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch screen is in a bright screen state, directly executing the following steps: and acquiring a touch area corresponding to the touch operation.
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
determining a first fingerprint scanning module according to a preset condition;
and sending an activation instruction to the first fingerprint scanning module, and activating the first fingerprint scanning module by the activation instruction.
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
judging whether the area of the first fingerprint image reaches a preset fingerprint area or not;
if the area of the first fingerprint image reaches a preset fingerprint area, executing the following steps: identifying the first fingerprint image;
if the area of the first fingerprint image does not reach the preset area, activating the fingerprint scanning modules of one or more adjacent cells according to a preset sequence, and acquiring supplementary fingerprint images of the adjacent cells by the fingerprint scanning modules of the one or more adjacent cells;
splicing the first fingerprint image and the supplementary fingerprint image into a second fingerprint image until the area of the second fingerprint image reaches a preset area;
and identifying the second fingerprint image.
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
after the first fingerprint image is collected, a dormancy instruction is sent to the first fingerprint scanning module, and the first fingerprint scanning module enters a low-power-consumption dormancy state after receiving the dormancy instruction
Further, the processor 110 is configured to invoke the fingerprint scanning program stored in the memory 109 to perform the following operations:
identifying the first fingerprint image according to a preset fingerprint identification model;
if the identification is successful, executing corresponding operation according to the user instruction;
and if the identification fails, prompting the user to trigger the touch operation again through the touch screen.
In addition, the mobile terminal 100 may further include a power supply 111 (such as a battery) for supplying power to each component, and preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, so that functions of managing charging, discharging, and power consumption are implemented through the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the mobile terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above terminal hardware structure and communication network system, the present invention provides various embodiments of the SIM card initialization acceleration method.
Referring to fig. 3, fig. 3 is a flowchart illustrating a fingerprint scanning method according to a first embodiment of the present invention.
In this embodiment, the fingerprint scanning method includes the following steps:
step S101, receiving touch operation triggered by a user through a touch screen;
generally, a touch screen is an inductive liquid crystal display device capable of receiving input signals of a touch pen, a finger, and the like, and when the touch screen receives a touch operation, the touch screen can touch various connecting devices according to preset settings. Touch screens can be classified into resistive, capacitive, infrared, and surface acoustic wave types according to their operating principles and media for transmitting information. When different types of touch screens receive touch operation, the parameters of the touch screens are changed differently. The capacitive touch screen is mostly used at present, the capacitive touch screen works by utilizing current induction of a human body, the capacitive touch screen is a piece of four-layer composite glass, the inner surface and the interlayer of the glass screen are respectively coated with one layer of ITO (indium tin oxide), the outermost layer is a layer of silica glass protective layer, the interlayer ITO coating serves as a working surface, four electrodes are led out from four corners, and the inner layer of ITO serves as a screen layer to guarantee the working environment.
When the screen occupancy of the touch screen exceeds a threshold (e.g., 80%, 90%, or 95%), the touch screen with the screen occupancy exceeding the threshold may be referred to as a full-screen. Generally, the screen ratio is calculated by: (area of touch screen/area of front panel of mobile terminal) 100%. The full-face screen faces various design and manufacturing difficulties, such as the handset, the front camera, the home key, etc. Compared with the conventional touch screen, the full-screen fingerprint scanning method provided by the embodiment of the invention has the functions of fingerprint scanning, screen awakening and the like.
Generally, a touch screen has a touch sensor thereon for detecting a touch operation on the touch screen and transmitting the detected touch operation to a mobile terminal. In the embodiment of the invention, the mobile terminal receives the touch operation triggered by the user through the touch screen.
Step S102, acquiring a touch area corresponding to the touch operation;
for a capacitive touch screen, when a user finger touches a metal layer of the touch screen, the user finger and the touch screen form a coupling capacitor due to a human body electric field, and for high-frequency current, the capacitor is a direct conductor, so that the finger sucks partial current from a contact point. The partial current flows out of the electrodes on the four corners of the touch screen, the current flowing through the four electrodes is in direct proportion to the distance from the finger to the four corners, and the controller obtains the touch area corresponding to the touch operation through accurate calculation of the proportion of the four currents.
Step S103, activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module;
in this embodiment, the touch screen is divided into a plurality of areas in advance, and each area corresponds to one fingerprint scanning module. Specifically, referring to fig. 4, fig. 4 is a scene schematic diagram of an embodiment of the fingerprint scanning method of the present invention.
In this embodiment, the full screen of the touch screen is divided into 12 areas, and each area corresponds to a fingerprint scanning module a — a fingerprint scanning module L. In other embodiments, the fingerprint scanning modules may be distributed in the half screen, and the half screen is divided into 8 areas, and each area corresponds to a fingerprint scanning module a-a fingerprint scanning module h. Those skilled in the art will appreciate that the touch screen may be divided into more or fewer regions, corresponding to more or fewer fingerprint scanning modules. The full screen or half screen fingerprint scanning module is distributed into other realizable forms.
Further, determining a first fingerprint scanning module according to a preset condition; and sending an activation instruction to the first fingerprint scanning module, and activating the first fingerprint scanning module by the activation instruction. Specifically, according to a touch area corresponding to a touch operation, the touch area is divided into different fingerprint scanning modules based on the distribution of the fingerprint scanning modules. The preset condition may be that the fingerprint scanning module with the largest area is determined as the first fingerprint scanning module, or that the fingerprint scanning module where the touch operation center point is located is determined as the first fingerprint module.
In this embodiment, after the first fingerprint image is acquired, a sleep instruction is sent to the first fingerprint scanning module, and the first fingerprint scanning module enters a low-power-consumption sleep state after receiving the sleep instruction.
Generally, the fingerprint scanning modules are all in a sleep state with low power consumption. And the fingerprint scanning device is in the working state of scanning fingerprints only after being activated. After the first fingerprint image is collected, a dormancy instruction is sent to the first fingerprint scanning module, and the first fingerprint scanning module enters a low-power-consumption dormancy state after receiving the dormancy instruction.
And step S104, identifying the first fingerprint image.
In the embodiment, after the first fingerprint image is acquired, the first fingerprint image is identified according to a preset fingerprint identification model; if the identification is successful, executing corresponding operation according to the user instruction; and if the identification fails, prompting the user to trigger the touch operation again through the touch screen. The preset fingerprint identification model can be a fingerprint identification model trained according to a neural convolutional network and a depth algorithm. And extracting features in the first fingerprint image according to the fingerprint identification model, and identifying the first fingerprint image. And if the identification is successful, executing corresponding operation according to the user instruction.
For example, if the mobile terminal is in a screen locking state, it is considered that the user needs to use fingerprint scanning to unlock, the identified first fingerprint image is compared with a pre-stored unlocking fingerprint image, and if the comparison is successful, the mobile terminal is unlocked. And if a command for acquiring the fingerprint image sent by the mobile terminal is received, storing the identified first fingerprint image in a corresponding acquisition command directory. If mobile payment is received through fingerprint scanning, after the first fingerprint image is successfully failed, the first fingerprint image is compared with a prestored payment fingerprint image, and if the comparison is successful, mobile payment is carried out. If the identification fails, the corresponding operation is not carried out, and the user can be prompted to carry out touch operation again and scan the fingerprint of the user again.
In this embodiment, the fingerprint scanning method mainly scans a user fingerprint through the fingerprint scanning module, generally, the scanning module is in a sleep state, and only after receiving an activation instruction, the scanning function is started to perform fingerprint scanning, and the fingerprint scanning module is a low-power-consumption fingerprint scanning module.
In the embodiment, a touch operation triggered by a user through a touch screen is received; acquiring a touch area corresponding to the touch operation; activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module; the first fingerprint image is identified. Therefore, the first fingerprint image is collected through the first fingerprint scanning module corresponding to the touch area, and the problems of low full-screen fingerprint scanning speed and high power consumption are solved.
Referring to fig. 5, fig. 5 is a flowchart illustrating a fingerprint scanning method according to a second embodiment of the present invention. Based on the first embodiment described above, the present embodiment differs from the first embodiment described above in that:
the step of acquiring the touch area corresponding to the touch operation further comprises the following steps:
step S1020, judging whether the touch operation is effective touch operation;
if the touch operation is an effective touch operation, executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch operation is not a valid touch operation, step S1021 is executed, and no response is made to the touch operation.
In this embodiment, the step of determining whether the touch operation is an effective touch operation includes obtaining touch information of the touch operation, where the touch information includes: duration and touch area; if the touch information reaches a threshold value, judging that the touch operation is effective touch operation; otherwise, if the touch information does not reach the threshold value, the touch operation is judged not to be the effective touch operation. If the touch operation is an effective touch operation, executing the following steps: acquiring a touch area corresponding to the touch operation; if the touch operation is not a valid touch operation, step S1021 is executed, and no response is made to the touch operation.
Specifically, touch information of a touch operation is acquired through a sensor on a touch screen, and the touch information comprises duration and a touch area. Presetting a threshold value of touch information, for example, setting the duration to 1s, 2s, 3s and the like, and setting the threshold value of touch area to 1 cm2、1.5㎝2、2㎝2And the like. The touch information may also include the temperature of the touching party, the touch operation moving distance, and the like in other embodiments. Specifically, whether the touch party is a finger needing fingerprint scanning is judged according to the temperature of the touch party, and the type of the touch operation is judged according to the movement distance of the touch operation.
In this embodiment, if the touch information reaches the threshold, it is determined that the touch operation is an effective touch operation, and the following steps are performed: acquiring a touch area corresponding to the touch operation; otherwise, if the touch information does not reach the threshold, it is determined that the touch operation is not a valid touch operation, and step S1021 is executed: and not responding to the touch operation.
In this embodiment, after the step of determining that the touch operation is an effective touch operation if the touch information reaches the threshold, the method further includes: if the touch screen is in a black screen state, lightening the touch screen, and then executing the following steps: acquiring a touch area corresponding to the touch operation; if the touch screen is in a bright screen state, directly executing the following steps: and acquiring a touch area corresponding to the touch operation. Specifically, if the touch screen of the mobile terminal is in a black screen state, the touch screen is lightened after an effective touch operation is detected, and a touch area corresponding to the touch operation is acquired after the touch screen is lightened. Generally, the touch screen is lighted up by a power key, a home key, gravity sensing, and the like. The embodiment of the invention increases a screen lighting mode for lighting the touch screen after detecting the effective touch operation.
In this embodiment, if the touch screen is in a bright screen state, the touch area corresponding to the touch operation is directly obtained. Generally, for an LCD, when a mobile terminal is in a sleep state, a backlight module is turned off, the LCD is in a black screen state, and when an effective touch operation is detected, the backlight module is turned on to make the LCD in a bright screen state.
In this embodiment, by determining whether a touch operation is an effective operation, if the touch information reaches a threshold, it is determined that the touch operation is an effective touch operation, and the following steps are performed: acquiring a touch area corresponding to the touch operation; otherwise, if the touch information does not reach the threshold value, the touch operation is judged not to be the effective touch operation, and the touch operation is not responded. Therefore, the fingerprint scanning of the mobile terminal when the mobile terminal is in misoperation is reduced, the pertinence of the fingerprint scanning of the mobile terminal is improved, and the power consumption of the fingerprint scanning of the mobile terminal is reduced.
Referring to fig. 6, fig. 6 is a flowchart illustrating a fingerprint scanning method according to a third embodiment of the present invention. Based on the second embodiment described above, the present embodiment differs from the second embodiment described above in that:
the step of activating the fingerprint scanning module corresponding to the touch position, after the step of scanning the fingerprint image by the fingerprint scanning module, further includes:
step S1031, judging whether the area of the first fingerprint image reaches a preset fingerprint area;
specifically, a preset fingerprint area, for example, 1.5 cm is set in advance2、2㎝2. If the first fingerprint image reaches a preset fingerprint area, the first fingerprint image can be identified according to a preset fingerprint identification model, and high matching degree and accuracy are achieved; and if the first fingerprint image does not reach the preset fingerprint area, identifying the first fingerprint image according to a preset fingerprint identification model, or the accuracy of fingerprint identification is too low.
If the area of the first fingerprint image reaches a preset fingerprint area, executing step S104: identifying the first fingerprint image;
in this embodiment, if the area of the first fingerprint image reaches a preset fingerprint area, the first fingerprint image is identified according to a pre-trained identification model.
Step S1032, if the area of the first fingerprint image does not reach a preset area, activating the fingerprint scanning modules of one or more adjacent cells according to a preset sequence, and acquiring supplementary fingerprint images of the adjacent cells by the fingerprint scanning modules of the one or more adjacent cells;
step S1033, splicing the first fingerprint image and the supplementary fingerprint image into a second fingerprint image until the area of the second fingerprint image reaches a preset area;
in this embodiment, if the area of the first fingerprint image does not reach the preset area, the fingerprint scanning modules of one or more neighboring cells are activated according to the preset sequence, and the fingerprint scanning modules of the one or more neighboring cells acquire supplementary fingerprint images of the neighboring cells. Specifically, the preset sequence may be determined from a first fingerprint identification module by determining a first adjacent fingerprint scanning module in a counterclockwise or clockwise sequence, and the next adjacent fingerprint scanning module scans a fingerprint image corresponding to the adjacent fingerprint scanning module to obtain a first supplementary fingerprint image. If the sum of the areas of the fingerprint image and the first supplemental fingerprint image still does not reach the preset area, the fingerprint image and the second adjacent fingerprint scanning module … … of the first adjacent fingerprint scanning module are continuously scanned and overlapped in sequence until the sum of the areas of the first fingerprint image and the supplemental fingerprint image reaches the preset area.
Specifically, referring to fig. 7, fig. 7 is a schematic view of a scene of another embodiment of the fingerprint scanning method of the present invention. For a mobile terminal with a touch screen distributed with a fingerprint scanning module A-a fingerprint scanning module L, if a touch area of a finger of a user is located at a junction of a fingerprint scanning module E, a fingerprint scanning module F, a fingerprint scanning module H and a fingerprint scanning module I, dividing the touch area into E, F, H, I four areas, calculating the area of each area by the mobile terminal, and taking the fingerprint scanning module E corresponding to the area E with the largest area as a first fingerprint scanning module. And scanning the fingerprint image corresponding to the area E by the first fingerprint scanning module to obtain a first fingerprint image. And if the area of the first fingerprint image does not reach the preset fingerprint area, taking the fingerprint scanning module F corresponding to the area F as a first adjacent fingerprint scanning module in a clockwise direction, and acquiring a first supplementary fingerprint image of the area F by the first adjacent fingerprint scanning module. If the sum of the areas of the first fingerprint image and the first supplemental fingerprint image reaches a preset area, the fingerprint scanning module I corresponding to the area I is used as a second adjacent fingerprint scanning module … … to sequentially scan and overlap until the sum of the areas of the first fingerprint image and the supplemental fingerprint image reaches the preset area.
Step S1034, recognizing the second fingerprint image.
In the embodiment, after the second fingerprint image is acquired, the second fingerprint image is identified according to a preset fingerprint identification model; if the identification is successful, executing corresponding operation according to the user instruction; and if the identification fails, prompting the user to trigger the touch operation again through the touch screen. The preset fingerprint identification model can be a fingerprint identification model trained according to a neural convolutional network and a depth algorithm. And extracting the characteristics in the second fingerprint image according to the fingerprint identification model, and identifying the second fingerprint image. And if the identification is successful, executing corresponding operation according to the user instruction.
For example, if the mobile terminal is in a screen locking state, it is considered that the user needs to use fingerprint scanning to unlock, the identified first fingerprint image is compared with a pre-stored unlocking fingerprint image, and if the comparison is successful, the mobile terminal is unlocked. And if receiving a command of collecting the fingerprint image sent by the mobile terminal, storing the identified second fingerprint image in a corresponding collection command directory. If mobile payment is carried out through fingerprint scanning, after the second fingerprint image is successfully failed, the second fingerprint image is compared with a prestored payment fingerprint image, and if the comparison is successful, mobile payment is carried out. If the identification fails, the corresponding operation is not carried out, and the user can be prompted to carry out touch operation again and scan the fingerprint of the user again.
According to the embodiment of the invention, whether the area of the first fingerprint image reaches a preset fingerprint area is judged, if the area of the first fingerprint image does not reach the preset area, fingerprint scanning modules of one or more adjacent cells of the fingerprint scanning module are activated according to a preset sequence, and the fingerprint scanning modules of the one or more adjacent cells acquire supplementary fingerprint images of the adjacent cells; splicing the first fingerprint image and the supplementary fingerprint image into a second fingerprint image until the area of the second fingerprint image reaches a preset area; and identifying the second fingerprint image. Therefore, the problems of low full-screen fingerprint scanning speed and high power consumption are solved by activating the corresponding fingerprint scanning modules in the touch area and enabling other fingerprint scanning modules to be in a dormant state.
The embodiment of the invention also provides a computer readable storage medium.
In this embodiment, the computer readable storage medium has a fingerprint scanning program stored thereon, and the fingerprint scanning program is executed by a processor to implement the steps of the fingerprint scanning method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A fingerprint scanning method is applied to a mobile terminal, the mobile terminal comprises a plurality of fingerprint scanning modules, and the method comprises the following steps:
receiving touch operation triggered by a user through a touch screen;
acquiring a touch area corresponding to the touch operation;
activating a first fingerprint scanning module corresponding to the touch area, and acquiring a first fingerprint image by the first fingerprint scanning module;
identifying the first fingerprint image;
wherein, the step of activating the first fingerprint scanning module corresponding to the touch area and acquiring the first fingerprint image by the first fingerprint scanning module further includes:
judging whether the area of the first fingerprint image reaches a preset fingerprint area or not;
if the area of the first fingerprint image reaches a preset fingerprint area, executing the following steps: identifying the first fingerprint image;
if the area of the first fingerprint image does not reach a preset area, activating the fingerprint scanning modules of one or more adjacent cells of the first fingerprint scanning module according to a preset sequence, and acquiring supplementary fingerprint images of the adjacent cells by the fingerprint scanning modules of the one or more adjacent cells, wherein the preset sequence is that starting from the first fingerprint scanning module, the first adjacent fingerprint scanning module is determined through a counterclockwise or clockwise sequence, and the fingerprint images corresponding to the first adjacent fingerprint scanning module are scanned to obtain a first supplementary fingerprint image;
splicing the first fingerprint image and the supplementary fingerprint image into a second fingerprint image until the area of the second fingerprint image reaches a preset area;
and identifying the second fingerprint image.
2. The method according to claim 1, wherein the step of obtaining the touch area corresponding to the touch operation is further preceded by:
judging whether the touch operation is effective touch operation or not;
if the touch operation is an effective touch operation, executing the following steps: acquiring a touch area corresponding to the touch operation;
and if the touch operation is not the effective touch operation, not responding to the touch operation.
3. The method of claim 2, wherein the step of determining whether the touch operation is a valid touch operation comprises:
acquiring touch information of the touch operation, wherein the touch information comprises: duration and touch area;
if the touch information reaches a threshold value, judging that the touch operation is effective touch operation;
otherwise, if the touch information does not reach the threshold value, the touch operation is judged not to be the effective touch operation.
4. The method of claim 3, wherein the step of determining that the touch operation is a valid touch operation if the touch information reaches a threshold further comprises:
if the touch screen is in a black screen state, lightening the touch screen, and then executing the following steps: acquiring a touch area corresponding to the touch operation;
if the touch screen is in a bright screen state, directly executing the following steps: and acquiring a touch area corresponding to the touch operation.
5. The method of claim 1, wherein the touch screen is divided into a plurality of areas in advance, each area corresponds to one fingerprint scanning module, and the step of activating the first fingerprint scanning module corresponding to the touch area comprises:
determining a first fingerprint scanning module according to a preset condition;
and sending an activation instruction to the first fingerprint scanning module, and activating the first fingerprint scanning module by the activation instruction.
6. The method of claim 1, wherein activating a first fingerprint scanning module corresponding to the touch area further comprises, after the step of capturing a first fingerprint image by the first fingerprint scanning module:
after the first fingerprint image is collected, a dormancy instruction is sent to the first fingerprint scanning module, and the first fingerprint scanning module enters a low-power-consumption dormancy state after receiving the dormancy instruction.
7. The method of claim 1, wherein the step of identifying the first fingerprint image comprises:
identifying the first fingerprint image according to a preset fingerprint identification model;
if the identification is successful, executing corresponding operation according to the user instruction;
if the identification fails, prompting the user to trigger the touch operation again through the touch screen;
the step of identifying the second fingerprint image comprises:
identifying the second fingerprint image according to a preset fingerprint identification model;
if the identification is successful, executing corresponding operation according to the user instruction;
and if the identification fails, prompting the user to trigger the touch operation again through the touch screen.
8. A mobile terminal, characterized in that it comprises a memory, a processor and a fingerprint scanning program stored on said memory, which when executed by the processor implements the steps of the method according to any one of claims 1-7.
9. A computer-readable storage medium, having stored thereon a fingerprint scanning program for implementing the steps of the method according to any one of claims 1-7 when executed by a processor.
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| CN111291600A (en) * | 2018-12-07 | 2020-06-16 | 北京小米移动软件有限公司 | Fingerprint acquisition method and device |
| CN109976651B (en) * | 2019-01-29 | 2021-09-17 | 上海思立微电子科技有限公司 | Fingerprint data acquisition method and fingerprint identification equipment |
| CN109858225A (en) * | 2019-01-30 | 2019-06-07 | Oppo广东移动通信有限公司 | Unlocked by fingerprint method, apparatus, terminal and storage medium |
| CN110674691A (en) * | 2019-08-22 | 2020-01-10 | 联想图像（天津）科技有限公司 | Fingerprint identification and verification method and device and printing equipment |
| CN110532751B (en) * | 2019-09-02 | 2022-05-31 | 联想(北京)有限公司 | Information processing method, electronic device, and readable storage medium |
| CN112580398A (en) * | 2019-09-29 | 2021-03-30 | 北京小米移动软件有限公司 | Fingerprint acquisition method and device |
| CN111443823B (en) * | 2020-03-23 | 2022-06-28 | Oppo（重庆）智能科技有限公司 | Terminal control method, device, terminal and storage medium |
| TWI765704B (en) * | 2021-05-10 | 2022-05-21 | 大陸商北京集創北方科技股份有限公司 | Wake-up method for capacitive fingerprint sensing device, capacitive fingerprint sensing device, touch display panel and information processing device |
| TWI798693B (en) * | 2021-05-10 | 2023-04-11 | 大陸商北京集創北方科技股份有限公司 | Capacitive fingerprint sensing device, touch display panel and information processing device using it |
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