CN110765813B - Fingerprint identification method and device - Google Patents
Fingerprint identification method and device Download PDFInfo
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- CN110765813B CN110765813B CN201810833079.4A CN201810833079A CN110765813B CN 110765813 B CN110765813 B CN 110765813B CN 201810833079 A CN201810833079 A CN 201810833079A CN 110765813 B CN110765813 B CN 110765813B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The disclosure relates to a fingerprint identification method and device. The method comprises the following steps: when the screen is detected to be touched by a finger, acquiring position information of a touch point; if the touch point is determined to be positioned in the fingerprint acquisition area of the screen, acquiring a touch pressure value; if the touch pressure value is larger than the pressure threshold value and the brightness of the screen does not meet the brightness condition, adjusting the brightness of the screen to meet the brightness condition, stopping acquiring the touch pressure value after the brightness adjustment of the screen is completed, and acquiring a fingerprint image through a fingerprint sensor; and carrying out matching processing on the fingerprint image and the fingerprint database to obtain a matching result, and returning the matching result to the application calling the fingerprint function. According to the fingerprint collection method and device, after the fingerprint collection area in the screen is pressed by the user forcefully to trigger fingerprint collection, in the process of fingerprint collection, the user does not need to continuously press the fingerprint collection area forcefully, and fingerprint collection and recognition can be carried out only by keeping the finger in the fingerprint collection area by the user, so that the fingerprint recognition process is optimized.
Description
Technical Field
The disclosure relates to the technical field of fingerprints, and in particular relates to a fingerprint identification method and device.
Background
Total reflection refers to the phenomenon that when light is incident on the interface of an optically dense medium, the light is totally reflected back into the original medium. Among these, a medium having a smaller light velocity than the two media is called an optically dense medium, and a medium having a larger light velocity than the two media is called an optically sparse medium. The total reflection must satisfy two conditions, namely, the incident angle is larger than the critical angle, and the light is emitted from the optically dense medium into the optically sparse medium.
Diffuse reflection refers to a phenomenon in which light projected on a rough surface is reflected in various directions. When a parallel incident light beam strikes a rough surface, the surface reflects the light beam in all directions. Although the incident light rays are parallel to each other, the reflected light rays are irregularly reflected in different directions due to the non-uniform normal directions of the points.
Optical fingerprints make use of the principles of total emission and diffuse reflection. Under the condition that no finger is pressed, light rays are emitted from a light source, the surface of the fingerprint sensor is subjected to total reflection, the total reflection light rays are emitted into a convex lens, the convex lens is imaged to CMOS (Complementary Metal Oxide Semiconductor ), and at the moment, the acquired image is a blank. When a finger presses the surface of the fingerprint sensor, the convex part of the fingerprint will contact with the surface of the fingerprint sensor, thereby generating diffuse reflection phenomenon. The intensity of the light which is diffusely reflected and enters the convex lens is much lower than that of the total reflection, so that a fingerprint image with high contrast and clear black and white is finally formed. Fig. 1 is a schematic diagram of a fingerprint image.
By means of an OLED (Organic Light-Emitting Diode) screen, which can be self-luminous, a fingerprint sensor can be placed under the screen. The surface of the screen is irradiated by the light source of the OLED, and fingerprint identification can be performed by utilizing the principles of total reflection and diffuse reflection.
In the related art, when a user uses an under-screen fingerprint function, the user needs to press the screen continuously with force, and if the user has a loose hand, fingerprint collection may not be triggered.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a fingerprint identification method and apparatus.
According to a first aspect of an embodiment of the present disclosure, there is provided a fingerprint identification method, including:
when the screen is detected to be touched by a finger, acquiring position information of a touch point;
if the touch point is determined to be positioned in the fingerprint acquisition area of the screen according to the position information of the touch point, acquiring a touch pressure value through a pressure sensor;
if the touch pressure value is larger than the pressure threshold value and the brightness of the screen does not meet the brightness condition, adjusting the brightness of the screen to meet the brightness condition, and stopping acquiring the touch pressure value after the brightness adjustment of the screen is completed;
after the screen brightness is adjusted, acquiring a fingerprint image through a fingerprint sensor;
and carrying out matching processing on the fingerprint image and the fingerprint database to obtain a matching result, and returning the matching result to the application calling the fingerprint function.
In one possible implementation, after the touch pressure value is acquired by the pressure sensor, before adjusting the screen brightness to meet the brightness condition, the method further includes:
reporting a first event through the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is the touch pressure value.
In one possible implementation, if the touch pressure value is greater than a pressure threshold value and the screen brightness does not meet the brightness condition, adjusting the screen brightness to meet the brightness condition includes:
when the screen locking module detects the first event, generating a brightness adjusting instruction, wherein the brightness adjusting instruction carries the brightness condition;
and if the screen brightness does not meet the brightness condition, adjusting the screen brightness to meet the brightness condition according to the brightness adjusting instruction.
In one possible implementation, after adjusting the screen brightness to meet the brightness condition, before acquiring the fingerprint image by the fingerprint sensor, the method further includes:
and sending the brightness adjustment completion information to the fingerprint module through the screen locking module.
In one possible implementation, acquiring a fingerprint image by a fingerprint sensor includes:
and when the fingerprint module detects the first event and receives the brightness adjustment completion information, acquiring a fingerprint image through a fingerprint sensor.
According to a second aspect of the present disclosure, there is provided a fingerprint recognition device comprising:
the first acquisition module is used for acquiring the position information of a touch point when the screen is detected to be touched by a finger;
the second acquisition module is used for determining that the touch point is positioned in a fingerprint acquisition area of the screen according to the position information of the touch point, and acquiring a touch pressure value through a pressure sensor;
the adjusting module is used for adjusting the screen brightness to meet the brightness condition if the touch pressure value is larger than the pressure threshold value and the screen brightness does not meet the brightness condition, and stopping acquiring the touch pressure value after the screen brightness adjustment is completed;
the third acquisition module is used for acquiring a fingerprint image through a fingerprint sensor after the screen brightness adjustment is completed;
and the return module is used for carrying out matching processing on the fingerprint image and the fingerprint database to obtain a matching result, and returning the matching result to the application calling the fingerprint function.
In one possible implementation, the apparatus further includes:
and the reporting module is used for reporting a first event through the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is the touch pressure value.
In one possible implementation, the adjusting module includes:
the generation sub-module is used for generating a brightness adjustment instruction when the screen locking module detects the first event, wherein the brightness adjustment instruction carries the brightness condition;
and the adjusting sub-module is used for adjusting the screen brightness to meet the brightness condition according to the brightness adjusting instruction if the screen brightness does not meet the brightness condition.
In one possible implementation, the apparatus further includes:
and the sending module is used for sending the brightness adjustment completion information to the fingerprint module through the screen locking module.
In one possible implementation manner, the third obtaining module is configured to:
and when the fingerprint module detects the first event and receives the brightness adjustment completion information, acquiring a fingerprint image through a fingerprint sensor.
According to a third aspect of the embodiments of the present disclosure, there is provided a fingerprint identification device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the above method.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, which when executed by a processor, causes the processor to perform the above-described method.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: when the screen is detected to be touched by a finger, position information of the touch point is obtained, if the position information of the touch point is determined, the touch pressure value is obtained through the pressure sensor, if the touch pressure value is larger than the pressure threshold and the brightness of the screen does not meet the brightness condition, the brightness of the screen is adjusted to meet the brightness condition, after the brightness adjustment of the screen is finished, the touch pressure value is stopped, after the brightness adjustment of the screen is finished, a fingerprint image is obtained through the fingerprint sensor, the fingerprint image is matched with the fingerprint database, a matching result is obtained, and the matching result is returned to an application calling the fingerprint function, so that after the fingerprint acquisition is triggered by pressing the fingerprint acquisition area in the screen by a user, the fingerprint acquisition and identification can be carried out without continuously pressing the fingerprint acquisition area by the user, thereby optimizing the fingerprint identification process and improving the fingerprint identification flexibility.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a fingerprint image.
Fig. 2 is a flow chart illustrating a fingerprint identification method according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating an exemplary method for fingerprint recognition in step S23, in which if the touch pressure value is greater than the pressure threshold value and the brightness of the screen does not satisfy the brightness condition, the brightness of the screen is adjusted to satisfy the brightness condition.
Fig. 4 illustrates an exemplary flowchart of a fingerprint identification method, according to an exemplary embodiment.
Fig. 5 illustrates an exemplary flowchart of a fingerprint identification method, according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a fingerprint recognition device according to an exemplary embodiment.
Fig. 7 is an exemplary block diagram of a fingerprint recognition device, according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating an apparatus 800 for fingerprint identification, according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
Fig. 2 is a flow chart illustrating a fingerprint identification method according to an exemplary embodiment. The method can be applied to terminal equipment such as mobile phones, tablet computers or intelligent watches, and is not limited herein. The fingerprint identification of the method may be off-screen fingerprint identification. As shown in fig. 2, the method includes steps S21 to S25.
In step S21, when it is detected that the screen is touched by a finger, position information of the touch point is acquired.
In one possible implementation, the screen may be an OLED screen.
In this embodiment, the position information of the touch point may represent position information of a finger touching the screen. The location information of the touch point may include coordinates of the touch point in the screen. The number of touch points may be plural or one, and is not limited herein.
In step S22, if it is determined that the touch point is located in the fingerprint acquisition area of the screen according to the position information of the touch point, the touch pressure value is acquired by the pressure sensor.
In this embodiment, after detecting that the screen is touched by a finger, the position information of the touch point may be transmitted to the pressure sensor. After the pressure sensor receives the position information of the touch point, whether the touch point is located in the fingerprint acquisition area of the screen can be judged according to the position information of the touch point.
In step S23, if the touch pressure value is greater than the pressure threshold and the screen brightness does not meet the brightness condition, the screen brightness is adjusted to meet the brightness condition, and after the screen brightness adjustment is completed, the acquisition of the touch pressure value is stopped.
In the present embodiment, after the screen brightness is adjusted to satisfy the brightness condition, it is not necessary to continue to acquire the touch pressure value.
In one possible implementation, the brightness condition is system default.
In another possible implementation, the brightness condition may be set by a user.
In step S24, after the screen brightness adjustment is completed, a fingerprint image is acquired by the fingerprint sensor.
In this embodiment, during fingerprint acquisition, it is not necessary to consider whether the touch pressure value is greater than the pressure threshold.
In step S25, the fingerprint image is matched with the fingerprint database to obtain a matching result, and the matching result is returned to the application calling the fingerprint function.
In this embodiment, fingerprint features of the fingerprint image may be extracted, and the fingerprint features of the fingerprint image may be matched with the fingerprint database, so as to determine whether the fingerprint features of the fingerprint image are consistent with the fingerprint features of the fingerprint database, thereby obtaining a matching result.
The application calling the fingerprint function may be a system authentication application or a payment application, and the application is not limited herein.
The fingerprint database may be a fingerprint database in the terminal device.
According to the embodiment, when the screen is detected to be touched by a finger, the position information of the touch point is acquired, if the position information of the touch point is determined, the touch pressure value is acquired through the pressure sensor, if the touch pressure value is larger than the pressure threshold and the brightness of the screen does not meet the brightness condition, the brightness of the screen is adjusted to meet the brightness condition, after the brightness adjustment of the screen is finished, the touch pressure value is stopped, after the brightness adjustment of the screen is finished, the fingerprint image is acquired through the fingerprint sensor, the fingerprint image is matched with the fingerprint database, a matching result is obtained, and the matching result is returned to an application calling the fingerprint function, so that after the fingerprint acquisition area in the screen is pressed by a user forcefully, the fingerprint acquisition area is not required to be pressed by the user continuously, and fingerprint acquisition and recognition can be performed only by keeping the finger in the fingerprint acquisition area, thereby optimizing the fingerprint recognition process and improving the fingerprint recognition flexibility.
In one possible implementation, after the touch pressure value is acquired by the pressure sensor, before adjusting the screen brightness to meet the brightness condition, the method further includes: reporting a first event through the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is a touch pressure value. In this implementation manner, if the pressure sensor determines that the touch point is located in the fingerprint acquisition area of the screen according to the position information of the touch point, the first event may be reported according to the acquired touch pressure value.
It should be noted that "first" in the first event is only for convenience of description and reference herein, and does not mean that there is necessarily a first event corresponding thereto in the specific implementation of the present disclosure.
Fig. 3 is a flowchart illustrating an exemplary method for fingerprint recognition in step S23, in which if the touch pressure value is greater than the pressure threshold value and the brightness of the screen does not satisfy the brightness condition, the brightness of the screen is adjusted to satisfy the brightness condition. As shown in fig. 3, if the touch pressure value is greater than the pressure threshold value and the screen brightness does not satisfy the brightness condition, the screen brightness is adjusted to satisfy the brightness condition, which may include step S231 and step S232.
In step S231, when the screen locking module detects the first event, a brightness adjustment instruction is generated, where the brightness adjustment instruction carries a brightness condition.
In this embodiment, the lock screen module may poll the event node of the pressure sensor. When the screen locking module polls a first event reported by the pressure sensor, the first event can be received. If the screen locking module determines that the type of the first event is a pressure type and the value of the first event is greater than the pressure threshold, a brightness adjustment instruction may be generated and may be sent to the display module.
In one possible implementation, the brightness condition may be that the screen brightness is greater than a brightness threshold.
In another possible implementation, the brightness condition may be that the screen brightness is a maximum brightness value.
In step S232, if the screen brightness does not meet the brightness condition, the screen brightness is adjusted to meet the brightness condition according to the brightness adjustment command.
In this embodiment, after receiving the brightness adjustment instruction, the display module may determine whether the screen brightness meets the brightness condition corresponding to the brightness adjustment instruction. If the screen brightness does not meet the brightness condition, the screen brightness may be adjusted to meet the brightness condition.
Fig. 4 illustrates an exemplary flowchart of a fingerprint identification method, according to an exemplary embodiment. As shown in fig. 4, the method may include steps S41 to S47.
In step S41, when it is detected that the screen is touched by a finger, position information of the touch point is acquired.
Wherein, for step S41, see the description of step S21 above.
In step S42, if it is determined that the touch point is located in the fingerprint acquisition area of the screen according to the position information of the touch point, the touch pressure value is acquired by the pressure sensor.
Wherein, for step S42, see the description of step S22 above.
In step S43, a first event is reported by the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is a touch pressure value.
In step S44, when the screen locking module detects the first event, a brightness adjustment command is generated, where the brightness adjustment command carries a brightness condition.
Wherein, for step S44, see the description of step S231 above.
In step S45, if the screen brightness does not meet the brightness condition, the screen brightness is adjusted to meet the brightness condition according to the brightness adjustment command, and after the screen brightness adjustment is completed, the acquisition of the touch pressure value is stopped.
Wherein, for step S45, see the description of step S232 and step S23 above.
In step S46, after the screen brightness adjustment is completed, a fingerprint image is acquired by the fingerprint sensor.
In step S47, the fingerprint image is matched with the fingerprint database to obtain a matching result, and the matching result is returned to the application calling the fingerprint function.
Wherein, for step S47, see the description of step S25 above.
In one possible implementation, after adjusting the screen brightness to meet the brightness condition, before acquiring the fingerprint image by the fingerprint sensor, the method further comprises: and sending the brightness adjustment completion information to the fingerprint module through the screen locking module. In this implementation, after the brightness of the screen is adjusted to meet the brightness condition, brightness adjustment completion information is sent to the fingerprint module through the screen locking module, so that the fingerprint module is notified that brightness adjustment is completed.
Fig. 5 illustrates an exemplary flowchart of a fingerprint identification method, according to an exemplary embodiment. As shown in fig. 5, the method may include steps S51 to S59.
In step S51, when it is detected that the screen is touched by a finger, position information of the touch point is acquired.
Wherein, for step S51, see the description of step S21 above.
In step S52, if it is determined that the touch point is located in the fingerprint acquisition area of the screen according to the position information of the touch point, the touch pressure value is acquired by the pressure sensor.
Wherein, for step S52, see the description of step S22 above.
In step S53, a first event is reported by the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is a touch pressure value.
In step S54, when the screen locking module detects the first event, a brightness adjustment command is generated, where the brightness adjustment command carries a brightness condition.
Wherein, for step S54, see the description of step S231 above.
In step S55, if the screen brightness does not meet the brightness condition, the screen brightness is adjusted to meet the brightness condition according to the brightness adjustment command, and after the screen brightness adjustment is completed, the acquisition of the touch pressure value is stopped.
Wherein, for step S55, see the description of step S232 and step S23 above.
In step S56, the brightness adjustment completion information is sent to the fingerprint module through the screen locking module.
In step S57, when the fingerprint module detects the first event and receives the brightness adjustment completion information, a fingerprint image is acquired by the fingerprint sensor.
In this embodiment, when the fingerprint module detects the first event, if the type of the first event is determined to be the pressure type, the value of the first event is greater than the pressure threshold, and the brightness adjustment completion information is received, the fingerprint acquisition process may be triggered.
In step S58, the fingerprint image is matched with the fingerprint database to obtain a matching result, and the matching result is returned to the application calling the fingerprint function.
Wherein, for step S58, see the description of step S25 above.
Fig. 6 is a block diagram illustrating a fingerprint recognition device according to an exemplary embodiment. Referring to fig. 6, the apparatus includes a first acquisition module 61, a second acquisition module 62, an adjustment module 63, a third acquisition module 64, and a return module 65.
The first acquisition module 61 is configured to acquire position information of a touch point when it is detected that the screen is touched by a finger.
The second acquisition module 62 is configured to determine that the touch point is located within a fingerprint acquisition area of the screen according to the position information of the touch point, and acquire a touch pressure value through a pressure sensor.
The adjusting module 63 is configured to adjust the screen brightness to meet the brightness condition if the touch pressure value is greater than the pressure threshold and the screen brightness does not meet the brightness condition, and stop acquiring the touch pressure value after the screen brightness adjustment is completed.
The third acquisition module 64 is configured to acquire a fingerprint image by the fingerprint sensor after the screen brightness adjustment is completed.
The return module 65 is configured to match the fingerprint image with the fingerprint database to obtain a matching result, and return the matching result to the application calling the fingerprint function.
Fig. 7 is an exemplary block diagram of a fingerprint recognition device, according to an exemplary embodiment. As shown in fig. 7:
in one possible implementation, the apparatus further includes a reporting module 66.
The reporting module 66 is configured to report a first event via the pressure sensor, wherein the type of the first event is a pressure type and the value of the first event is a touch pressure value.
In one possible implementation, the adjustment module 63 includes a generation sub-module 631 and an adjustment sub-module 632.
The generating sub-module 631 is configured to generate a brightness adjustment instruction when the screen lock module detects the first event, wherein the brightness adjustment instruction carries a brightness condition.
The adjustment sub-module 632 is configured to adjust the screen brightness to satisfy the brightness condition according to the brightness adjustment instruction if the screen brightness does not satisfy the brightness condition.
In one possible implementation, the apparatus further includes a sending module 67.
The transmitting module 67 is configured to transmit the brightness adjustment completion information to the fingerprint module through the screen locking module.
In one possible implementation, the third acquisition module 64 is configured to acquire a fingerprint image by the fingerprint sensor when the fingerprint module detects the first event and receives the brightness adjustment completion information.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
According to the embodiment, when the screen is detected to be touched by a finger, the position information of the touch point is acquired, if the position information of the touch point is determined, the touch pressure value is acquired through the pressure sensor, if the touch pressure value is larger than the pressure threshold and the brightness of the screen does not meet the brightness condition, the brightness of the screen is adjusted to meet the brightness condition, after the brightness adjustment of the screen is finished, the touch pressure value is stopped, after the brightness adjustment of the screen is finished, the fingerprint image is acquired through the fingerprint sensor, the fingerprint image is matched with the fingerprint database, a matching result is obtained, and the matching result is returned to an application calling the fingerprint function, so that after the fingerprint acquisition area in the screen is pressed by a user forcefully, the fingerprint acquisition area is not required to be pressed by the user continuously, and fingerprint acquisition and recognition can be performed only by keeping the finger in the fingerprint acquisition area, thereby optimizing the fingerprint recognition process and improving the fingerprint recognition flexibility.
Fig. 8 is a block diagram illustrating an apparatus 800 for fingerprint identification, according to an example embodiment. For example, apparatus 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.
Referring to fig. 8, apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the apparatus 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 806 provides power to the various components of the device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.
The multimedia component 808 includes a screen between the device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 800 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the apparatus 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, an orientation or acceleration/deceleration of the device 800, and a change in temperature of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communication between the apparatus 800 and other devices, either in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of apparatus 800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A method of fingerprint identification, comprising:
when the screen is detected to be touched by a finger, acquiring position information of a touch point;
if the touch point is determined to be positioned in the fingerprint acquisition area of the screen according to the position information of the touch point, acquiring a touch pressure value through a pressure sensor;
if the touch pressure value is larger than the pressure threshold value and the brightness of the screen does not meet the brightness condition, adjusting the brightness of the screen to meet the brightness condition, and stopping acquiring the touch pressure value after the brightness adjustment of the screen is completed;
after the screen brightness is adjusted, acquiring a fingerprint image through a fingerprint sensor;
and carrying out matching processing on the fingerprint image and the fingerprint database to obtain a matching result, and returning the matching result to the application calling the fingerprint function.
2. The method of claim 1, wherein after the touch pressure value is obtained by the pressure sensor, before adjusting the screen brightness to meet the brightness condition, the method further comprises:
reporting a first event through the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is the touch pressure value.
3. The method of claim 2, wherein adjusting the screen brightness to meet the brightness condition if the touch pressure value is greater than a pressure threshold and the screen brightness does not meet the brightness condition comprises:
when the screen locking module detects the first event, generating a brightness adjusting instruction, wherein the brightness adjusting instruction carries the brightness condition;
and if the screen brightness does not meet the brightness condition, adjusting the screen brightness to meet the brightness condition according to the brightness adjusting instruction.
4. A method according to claim 3, wherein after adjusting the screen brightness to meet the brightness condition, before acquiring a fingerprint image by a fingerprint sensor, the method further comprises:
and sending the brightness adjustment completion information to the fingerprint module through the screen locking module.
5. The method of claim 4, wherein acquiring the fingerprint image by the fingerprint sensor comprises:
and when the fingerprint module detects the first event and receives the brightness adjustment completion information, acquiring a fingerprint image through a fingerprint sensor.
6. A fingerprint recognition device, comprising:
the first acquisition module is used for acquiring the position information of a touch point when the screen is detected to be touched by a finger;
the second acquisition module is used for determining that the touch point is positioned in a fingerprint acquisition area of the screen according to the position information of the touch point, and acquiring a touch pressure value through a pressure sensor;
the adjusting module is used for adjusting the screen brightness to meet the brightness condition if the touch pressure value is larger than the pressure threshold value and the screen brightness does not meet the brightness condition, and stopping acquiring the touch pressure value after the screen brightness adjustment is completed;
the third acquisition module is used for acquiring a fingerprint image through a fingerprint sensor after the screen brightness adjustment is completed;
and the return module is used for carrying out matching processing on the fingerprint image and the fingerprint database to obtain a matching result, and returning the matching result to the application calling the fingerprint function.
7. The apparatus of claim 6, wherein the apparatus further comprises:
and the reporting module is used for reporting a first event through the pressure sensor, wherein the type of the first event is a pressure type, and the value of the first event is the touch pressure value.
8. The apparatus of claim 7, wherein the adjustment module comprises:
the generation sub-module is used for generating a brightness adjustment instruction when the screen locking module detects the first event, wherein the brightness adjustment instruction carries the brightness condition;
and the adjusting sub-module is used for adjusting the screen brightness to meet the brightness condition according to the brightness adjusting instruction if the screen brightness does not meet the brightness condition.
9. The apparatus of claim 8, wherein the apparatus further comprises:
and the sending module is used for sending the brightness adjustment completion information to the fingerprint module through the screen locking module.
10. The apparatus of claim 9, wherein the third acquisition module is configured to:
and when the fingerprint module detects the first event and receives the brightness adjustment completion information, acquiring a fingerprint image through a fingerprint sensor.
11. A fingerprint recognition device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of any one of claims 1 to 5.
12. A non-transitory computer readable storage medium, which when executed by a processor, causes the processor to perform the method of any one of claims 1 to 5.
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| WO2023225815A1 (en) * | 2022-05-23 | 2023-11-30 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition method and apparatus, and terminal device |
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