WO2019165999A1 - 超声波指纹采集精度控制处理方法、存储介质及移动终端 - Google Patents

超声波指纹采集精度控制处理方法、存储介质及移动终端 Download PDF

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Publication number
WO2019165999A1
WO2019165999A1 PCT/CN2019/076584 CN2019076584W WO2019165999A1 WO 2019165999 A1 WO2019165999 A1 WO 2019165999A1 CN 2019076584 W CN2019076584 W CN 2019076584W WO 2019165999 A1 WO2019165999 A1 WO 2019165999A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
acoustic wave
fingerprint device
ultrasonic beam
mobile terminal
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Application number
PCT/CN2019/076584
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English (en)
French (fr)
Inventor
董星
朱建锋
Original Assignee
惠州Tcl移动通信有限公司
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Application filed by 惠州Tcl移动通信有限公司 filed Critical 惠州Tcl移动通信有限公司
Publication of WO2019165999A1 publication Critical patent/WO2019165999A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing

Definitions

  • the present invention relates to the field of mobile terminal technologies, and in particular, to an ultrasonic fingerprint acquisition precision control processing method, a storage medium, and a mobile terminal.
  • the current fingerprint unlocking adopts an ultrasonic solution.
  • the ultrasonic solution will have problems such as low accuracy, insensitivity to fingerprint recognition, high probability of unlocking failure, and invalid interference of sound wave return in the application process of fingerprint unlocking.
  • the use is inconvenient.
  • the embodiment of the invention provides an ultrasonic fingerprint acquisition precision control processing method, a storage medium and a mobile terminal, which can solve the problem that the prior art ultrasonic solution has low accuracy, inaccurate fingerprint recognition, and unlock failure in the application process of fingerprint unlocking. High probability and other issues.
  • an embodiment of the present invention provides an ultrasonic fingerprint acquisition precision control processing method, where the method includes:
  • the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave directing film;
  • the bundled orientated ultrasonic beam is received by the receiving layer in the ultrasonic fingerprint device after being reflected by the interface between the user's finger and the external screen glass of the mobile terminal, and the fingerprint information is collected.
  • the ultrasonic fingerprint acquisition precision control processing method wherein, when the ultrasonic fingerprint device on the mobile terminal is triggered, before the transmitting layer of the ultrasonic fingerprint device transmits the ultrasonic beam, the method further includes:
  • An ultrasonic fingerprint device for acquiring fingerprint information and unlocking is disposed on the mobile terminal in advance; the ultrasonic fingerprint device is provided with an acoustic wave orientation film for performing beam set orientation on the ultrasonic beam to concentrate the ultrasonic beam to propagate in a vertical direction. .
  • the ultrasonic fingerprint collection precision control processing method wherein the ultrasonic fingerprint device is further provided with: an emission layer for transmitting an ultrasonic beam, the sound wave orientation film is disposed on the emission layer; and the sound wave orientation film is disposed And a circuit layer for supplying power to the ultrasonic fingerprint device; and a receiving layer disposed on the circuit layer for receiving an ultrasonic beam to complete fingerprint collection.
  • the ultrasonic fingerprint acquisition precision control processing method wherein the acoustic wave orientation film is provided with a plurality of cylindrical acoustic wave orientation structures, and the inner wall of the cylindrical acoustic wave orientation structure is provided with a sound absorbing material.
  • the ultrasonic fingerprint acquisition precision control processing method wherein when the ultrasonic fingerprint device on the mobile terminal is triggered, the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam, including:
  • the mobile terminal When the user places a finger on the fingerprint identification area on the mobile terminal, the mobile terminal receives the user's instruction to trigger the ultrasonic fingerprint device;
  • the emission layer in the ultrasonic fingerprint device emits an ultrasonic beam.
  • the ultrasonic fingerprint acquisition precision control processing method wherein the preset acoustic wave orientation film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film, including:
  • the ultrasonic beam emitted by the emission layer propagates in various directions
  • the cylindrical acoustic wave directional structure on the acoustic wave directing film orients the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave directing film.
  • the ultrasonic fingerprint acquisition precision control processing method wherein the preset acoustic wave orientation film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, and the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave orientation film, and further includes:
  • the sound absorbing material on the inner wall of the cylindrical acoustic wave directional structure blocks and absorbs unwanted sound waves in the ultrasonic beam.
  • the ultrasonic fingerprint acquisition precision control processing method wherein the bundled orientated ultrasonic beam is received by a receiving layer in an ultrasonic fingerprint device after being reflected by an interface between a user's finger and an external screen glass of the mobile terminal, Collect fingerprint information, including:
  • the interface between the user's finger and the outer screen glass of the mobile terminal is reflected by the ultrasonic beam
  • the receiving layer in the ultrasonic fingerprint device receives the reflected ultrasonic beam and completes the collection of the fingerprint information.
  • an embodiment of the present invention provides a storage medium having a plurality of instructions stored thereon, wherein the instructions are adapted to be loaded and executed by a processor to implement the following steps:
  • the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave directing film;
  • the bundled orientated ultrasonic beam is received by the receiving layer in the ultrasonic fingerprint device after being reflected by the interface between the user's finger and the external screen glass of the mobile terminal, and the fingerprint information is collected.
  • the method further includes:
  • An ultrasonic fingerprint device for acquiring fingerprint information and unlocking is disposed on the mobile terminal in advance; the ultrasonic fingerprint device is provided with an acoustic wave orientation film for performing beam set orientation on the ultrasonic beam to concentrate the ultrasonic beam to propagate in a vertical direction. .
  • the ultrasonic fingerprint device is further provided with: an emission layer for transmitting an ultrasonic beam, the acoustic wave orientation film is disposed on the emission layer; and is disposed on the acoustic wave orientation film for implementing the ultrasonic fingerprint device a circuit layer for supplying power; and a receiving layer disposed on the circuit layer for receiving an ultrasonic beam to complete fingerprint acquisition.
  • the acoustic wave orientation film is provided with a plurality of cylindrical acoustic wave orientation structures, and the inner wall of the cylindrical acoustic wave orientation structure is provided with a sound absorbing material.
  • the transmitting layer in the ultrasonic fingerprint device transmits an ultrasonic beam, including:
  • the mobile terminal When the user places a finger on the fingerprint identification area on the mobile terminal, the mobile terminal receives the user's instruction to trigger the ultrasonic fingerprint device;
  • the emission layer in the ultrasonic fingerprint device emits an ultrasonic beam.
  • an embodiment of the present invention provides a mobile terminal, including: a processor, a storage medium communicably connected to the processor, the storage medium is adapted to store a plurality of instructions; the processor is adapted to invoke the The instructions in the storage medium are executed to perform the following steps:
  • the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave directing film;
  • the bundled orientated ultrasonic beam is reflected by the interface between the user's finger and the external screen glass of the mobile terminal, is received by the receiving layer in the ultrasonic fingerprint device, and the fingerprint information is collected;
  • An ultrasonic fingerprint device for acquiring fingerprint information and unlocking is disposed on the mobile terminal; and the ultrasonic fingerprint device is provided with an acoustic wave orientation film for performing beam set orientation on the ultrasonic beam to concentrate the ultrasonic beam to propagate in a vertical direction.
  • the ultrasonic fingerprint device is further provided with: an emission layer for transmitting an ultrasonic beam, the acoustic wave orientation film is disposed on the emission layer; and is disposed on the acoustic wave orientation film for implementing the ultrasonic fingerprint device a circuit layer for supplying power; and a receiving layer disposed on the circuit layer for receiving an ultrasonic beam to complete fingerprint acquisition.
  • the acoustic wave orientation film is provided with a plurality of cylindrical acoustic wave orientation structures, and the inner wall of the cylindrical acoustic wave orientation structure is provided with a sound absorbing material.
  • the transmitting layer in the ultrasonic fingerprint device transmits an ultrasonic beam, including:
  • the mobile terminal When the user places a finger on the fingerprint identification area on the mobile terminal, the mobile terminal receives the user's instruction to trigger the ultrasonic fingerprint device;
  • the emission layer in the ultrasonic fingerprint device emits an ultrasonic beam.
  • the preset acoustic wave orientation film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film, including:
  • the ultrasonic beam emitted by the emission layer propagates in various directions
  • the cylindrical acoustic wave directional structure on the acoustic wave directing film orients the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave directing film.
  • the preset acoustic alignment film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, and the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film, and further includes:
  • the sound absorbing material on the inner wall of the cylindrical acoustic wave directional structure blocks and absorbs unwanted sound waves in the ultrasonic beam.
  • the ultrasound beam that is directed by the beam set is received by the interface between the user's finger and the external screen glass of the mobile terminal, and then received by the receiving layer in the ultrasonic fingerprint device to collect fingerprint information, including:
  • the interface between the user's finger and the outer screen glass of the mobile terminal is reflected by the ultrasonic beam
  • the receiving layer in the ultrasonic fingerprint device receives the reflected ultrasonic beam and completes the collection of the fingerprint information.
  • the invention has the beneficial effects that the invention provides an acoustic wave directing film in the ultrasonic fingerprint device, so that most of the emitted ultrasonic beam and the reflected sound wave propagate in the vertical interface direction, which greatly reduces the receiving layer receiving in the ultrasonic fingerprint device.
  • the noise in the sound wave information is reflected, thereby significantly increasing the accuracy of the fingerprint information collection, thereby improving the unlocking accuracy.
  • FIG. 1 is a flowchart of an ultrasonic fingerprint acquisition precision control processing method according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of an ultrasonic fingerprint device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of directivity of an ultrasonic beam according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an acoustic wave directing film according to an embodiment of the present invention.
  • FIG. 5 is a functional block diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • high-screen mobile phones also known as full-screen mobile phones
  • full-screen mobile phones have become the new darling of mobile phone consumers because of their beauty and practicality, and more and more manufacturers have begun to design and produce full-screen mobile phones.
  • the development of the full screen will crowd the fingerprint sensor on the front of the smartphone and the tablet, but putting the fingerprint sensor on the back will reduce its ease of use and criticize the user. Therefore, the screen fingerprint unlocking technology is in mobile communication.
  • the field of smart devices still has great demand and practicality.
  • the current fingerprint unlocking method uses an ultrasonic solution.
  • FIG. 1 is a flowchart of an ultrasonic fingerprint acquisition precision control processing method according to an embodiment of the present invention.
  • the ultrasonic fingerprint collection precision control processing method comprises the following steps:
  • the S100 specifically includes:
  • the mobile terminal When the user places a finger on the fingerprint identification area on the mobile terminal, the mobile terminal receives the user's instruction to trigger the ultrasonic fingerprint device;
  • the emission layer in the ultrasonic fingerprint device emits an ultrasonic beam.
  • FIG. 2 is a schematic structural diagram of an ultrasonic fingerprint device according to an embodiment of the present invention.
  • the ultrasonic fingerprint device is further provided with: an emission layer 10 for transmitting an ultrasonic beam; and an acoustic wave orientation film 20 disposed on the emission layer 10 for beamforming the ultrasonic beam to concentrate the ultrasonic beam to the vertical direction.
  • a circuit layer 30 disposed on the acoustic wave directing film 20 for supplying power to the ultrasonic fingerprint device; and a receiving layer 40 disposed on the circuit layer 30 for receiving an ultrasonic beam for fingerprint acquisition.
  • the user When the user needs to perform an unlocking operation on the mobile terminal, the user places the finger 50 on the fingerprint recognition area on the mobile terminal (ie, on the outer screen glass 60 in FIG. 2). At this time, the mobile terminal receives the instruction of the user, and sends a trigger instruction to the preset ultrasonic fingerprint device to trigger the ultrasonic fingerprint device.
  • the ultrasonic fingerprint device starts transmitting an ultrasonic beam after being triggered.
  • the preset acoustic wave orientation film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film.
  • the S200 specifically includes:
  • the ultrasonic beam emitted by the emission layer propagates in various directions
  • the cylindrical acoustic wave directional structure on the acoustic wave directing film orients the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave directing film.
  • the principle of the ultrasonic fingerprint device in the mobile terminal is an ultrasonic transducer that converts electrical energy into mechanical energy, and converts mechanical energy into electrical energy through reflection.
  • the ultrasonic wave emitted by the ultrasonic transducer has a certain diffusion angle.
  • FIG. 3 is a schematic diagram of the directivity of the ultrasonic beam provided by the embodiment of the present invention. ⁇ is the semi-diffusion angle, ⁇ is the wavelength, and D is the effective area diameter of the sound source crystal.
  • the diffusion angle depends on the ratio of the wavelength to the diameter of the effective region of the source crystal: if the ratio is large, the diffusion angle is large, that is, the orientation of the ultrasonic wave is poor; when the ratio is small, the diffusion angle is small. That is, the orientation of the ultrasonic waves is good.
  • the size of the sound source crystal is limited, and thus the diffusion angle is large, resulting in a large noise in the ultrasonic wave received by the receiving layer 40.
  • the acoustic wave directing film 20 of the present invention is used for beam set orientation processing on the ultrasonic beam, reducing the semi-diffusion angle ⁇ of the ultrasonic beam, and concentrating the ultrasonic beam in a direction perpendicular to the acoustic wave directing film.
  • the acoustic wave directing film 20 in the present invention is shown in FIG. 4, and FIG. 4 is a schematic structural view of the acoustic wave directing film provided by the embodiment of the present invention.
  • the acoustic wave directing film 20 is provided with a plurality of cylindrical acoustic wave directing structures 210, and the inner wall of the cylindrical acoustic wave directing structure 210 is provided with a sound absorbing material 220.
  • the cylindrical acoustic wave directing structure 210 on the acoustic wave directing film 20 orients the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave directing film 20 (Fig. The direction of the vertical arrow in 2).
  • the sound absorbing material 220 on the inner wall of the cylindrical acoustic wave directional structure 210 blocks and absorbs unwanted sound waves in the ultrasonic beam, reduces noise in the ultrasonic beam, and improves the accuracy of the fingerprint information.
  • the ultrasonic beam is received by the receiving layer in the ultrasonic fingerprint device to collect fingerprint information.
  • the S300 specifically includes:
  • the interface between the user's finger and the outer screen glass of the mobile terminal is reflected by the ultrasonic beam
  • the receiving layer in the ultrasonic fingerprint device receives the reflected ultrasonic beam and completes the collection of the fingerprint information.
  • the ultrasonic beam passes through the bundle orientation of the acoustic wave directing film 20, and then passes between the user's finger 50 and the outer screen glass 60 of the mobile terminal.
  • the interface is reflected by the receiving layer 40, so that the fingerprint is received by the receiving layer 40 and collected on the finger 50 to achieve more accurate fingerprint information collection.
  • the present invention further discloses a mobile terminal, as shown in FIG. 5, comprising: a processor 100, a storage medium 200 connected to the processor 100; wherein the processor 100 Used to invoke program instructions in the storage medium 200 to perform the methods provided by the above embodiments, for example, to perform:
  • the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave directing film;
  • the bundled orientated ultrasonic beam is received by the receiving layer in the ultrasonic fingerprint device after being reflected by the interface between the user's finger and the external screen glass of the mobile terminal, and the fingerprint information is collected.
  • the mobile terminal in the present invention is provided with an ultrasonic fingerprint device for acquiring fingerprint information and unlocking; the ultrasonic fingerprint device is provided with an acoustic wave orientation film for beamforming the ultrasonic beam to concentrate the ultrasonic beam to the vertical direction. Therefore, the vast majority of the transmitted ultrasonic beam and the reflected sound wave propagate in the vertical interface direction, which greatly reduces the noise in the received sound wave information received by the receiving layer, thereby significantly increasing the accuracy of the fingerprint information collection, thereby improving the unlocking accuracy.
  • Embodiments of the present invention also provide a storage medium on which computer instructions are stored, the computer instructions causing a computer to perform the methods provided by the above embodiments.
  • FIG. 6 is a block diagram showing a specific structure of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal can be used to implement the ultrasonic fingerprint collection precision control processing method, the storage medium, and the mobile terminal provided in the foregoing embodiments.
  • the mobile terminal 1200 can be a smartphone or a tablet.
  • the mobile terminal 1200 may include an RF (Radio Frequency) circuit 110, a memory 120 including one or more (only one shown) computer-readable storage medium, an input unit 130, and a display unit. 140, sensor 150, audio circuit 160, transmission module 170, including processor 180 having one or more processing cores (only one shown) and power supply 190 and the like.
  • RF Radio Frequency
  • FIG. 6 the structure of the mobile terminal 1200 shown in FIG. 6 does not constitute a limitation of the mobile terminal 1200, and may include more or less components than those illustrated, or combine some components or different components. Arrangement. among them:
  • the RF circuit 110 is configured to receive and transmit electromagnetic waves, and realize mutual conversion between electromagnetic waves and electrical signals, thereby communicating with a communication network or other devices.
  • the RF circuit 110 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, a memory, and the like.
  • SIM Subscriber Identity Module
  • the RF circuit 110 can communicate with various networks such as the Internet, an intranet, a wireless network, or communicate with other devices over a wireless network.
  • the wireless network described above may include a cellular telephone network, a wireless local area network, or a metropolitan area network.
  • the above wireless networks may use various communication standards, protocols and technologies, including but not limited to global mobile communication systems (Global System for Mobile Communication, GSM), Enhanced Mobile Communication Technology (Enhanced Data GSM Environment, EDGE), Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access, WCDMA), Code Division Multiple Access (Code Division) Access, CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wireless Fidelity, Wi-Fi) (such as the Institute of Electrical and Electronics Engineers Standard IEEE 802.11a, IEEE 802.11b, IEEE 802.11g and / or IEEE 802.11n), VoIP (Voice) Over Internet Protocol, VoIP), Worldwide Interoperability for Microwave Access (Worldwide Interoperability for Microwave Access, Wi-Max, other protocols for mail, instant messaging, and short messages, as well as any other suitable communication protocol, may even include protocols that are not currently being developed.
  • GSM Global System for Mobile Communication
  • EDGE Enhanced Mobile Communication Technology
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple
  • the memory 120 can be used to store software programs and modules, such as the ultrasonic fingerprint acquisition precision control processing method, the storage medium, and the program instructions/modules corresponding to the mobile terminal in the above embodiment, and the processor 180 runs the software program and the module stored in the memory 120.
  • Memory 120 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 120 can further include memory remotely located relative to processor 180, which can be connected to mobile terminal 1200 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the input unit 130 can be configured to receive input numeric or character information and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.
  • input unit 130 can include touch-sensitive surface 131 as well as other input devices 132.
  • Touch-sensitive surface 131 also referred to as a touch display or trackpad, can collect touch operations on or near the user (such as a user using a finger, stylus, etc., on any suitable object or accessory on touch-sensitive surface 131 or The operation near the touch-sensitive surface 131) and driving the corresponding connecting device according to a preset program.
  • the touch-sensitive surface 131 can include two portions of a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 180 is provided and can receive commands from the processor 180 and execute them.
  • the touch-sensitive surface 131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 130 can also include other input devices 132.
  • other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 140 can be used to display information input by the user or information provided to the user and various graphical user interfaces of the mobile terminal 1200, which can be composed of graphics, text, icons, video, and any combination thereof.
  • the display unit 140 may include a display panel 141, and optionally, an LCD (Liquid may be used)
  • the display panel 141 is configured in the form of a Crystal Display (LCD) or an OLED (Organic Light-Emitting Diode).
  • touch-sensitive surface 131 may cover the display panel 141, and when the touch-sensitive surface 131 detects a touch operation thereon or nearby, it is transmitted to the processor 180 to determine the type of the touch event, and then the processor 180 according to the touch event The type provides a corresponding visual output on display panel 141.
  • touch-sensitive surface 131 and display panel 141 are implemented as two separate components to implement input and input functions, in some embodiments, touch-sensitive surface 131 can be integrated with display panel 141 for input. And output function.
  • Mobile terminal 1200 may also include at least one type of sensor 150, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor may close the display panel 141 when the mobile terminal 1200 moves to the ear. And / or backlight.
  • the gravity acceleration sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the mobile terminal 1200 can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, here No longer.
  • the audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the mobile terminal 1200.
  • the audio circuit 160 can transmit the converted electrical data of the received audio data to the speaker 161 for conversion to the sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal by the audio circuit 160. After receiving, it is converted into audio data, and then processed by the audio data output processor 180, transmitted to the terminal, for example, via the RF circuit 110, or outputted to the memory 120 for further processing.
  • the audio circuit 160 may also include an earbud jack to provide communication of the peripheral earphones with the mobile terminal 1200.
  • the mobile terminal 1200 can help the user to send and receive emails, browse web pages, access streaming media, etc. through the transmission module 170 (eg, Wi-Fi module), which provides wireless broadband Internet access to the user.
  • the transmission module 170 eg, Wi-Fi module
  • FIG. 6 shows the transmission module 170, it can be understood that it does not belong to the essential configuration of the mobile terminal 1200, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 180 is a control center of the mobile terminal 1200 that connects various portions of the entire handset with various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling data stored in the memory 120.
  • the various functions and processing data of the mobile terminal 1200 are executed to perform overall monitoring of the mobile phone.
  • the processor 180 may include one or more processing cores; in some embodiments, the processor 180 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and For applications, etc., the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180.
  • the mobile terminal 1200 also includes a power source 190 (such as a battery) that powers the various components.
  • the power source can be logically coupled to the processor 180 through a power management system to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • Power supply 190 may also include any one or more of a DC or AC power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
  • the mobile terminal 1200 may further include a camera (such as a front camera, a rear camera), a Bluetooth module, and the like, and details are not described herein.
  • the display unit of the mobile terminal is a touch screen display, and the mobile terminal further includes an ultrasonic fingerprint device for acquiring fingerprint information and unlocking; and the ultrasonic fingerprint device is configured to perform beam set orientation on the ultrasonic beam.
  • An acoustic wave directing film that concentrates the ultrasonic beam in a vertical direction, a memory, and one or more programs, wherein one or more programs are stored in the memory and configured to execute one or more of the one or more processors
  • the above program contains instructions for doing the following:
  • the emission layer in the ultrasonic fingerprint device transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the sound wave directing film;
  • the bundled orientated ultrasonic beam is reflected by the interface between the user's finger and the external screen glass of the mobile terminal, is received by the receiving layer in the ultrasonic fingerprint device, and the fingerprint information is collected;
  • the ultrasonic fingerprint device is further provided with: an emission layer for transmitting an ultrasonic beam, the acoustic wave orientation film is disposed on the emission layer; and is disposed on the acoustic wave orientation film for implementing the ultrasonic fingerprint device a circuit layer for supplying power; and a receiving layer disposed on the circuit layer for receiving an ultrasonic beam to complete fingerprint acquisition.
  • the acoustic wave orientation film is provided with a plurality of cylindrical acoustic wave orientation structures, and the inner wall of the cylindrical acoustic wave orientation structure is provided with a sound absorbing material.
  • the transmitting layer in the ultrasonic fingerprint device transmits an ultrasonic beam, including:
  • the mobile terminal When the user places a finger on the fingerprint identification area on the mobile terminal, the mobile terminal receives the user's instruction to trigger the ultrasonic fingerprint device;
  • the emission layer in the ultrasonic fingerprint device emits an ultrasonic beam.
  • the preset acoustic wave orientation film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film, including:
  • the ultrasonic beam emitted by the emission layer propagates in various directions
  • the cylindrical acoustic wave directional structure on the acoustic wave directing film orients the ultrasonic beam, so that the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave directing film.
  • the preset acoustic alignment film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, and the ultrasonic beam is concentrated to propagate in a direction perpendicular to the acoustic wave orientation film, and further includes:
  • the sound absorbing material on the inner wall of the cylindrical acoustic wave directional structure blocks and absorbs unwanted sound waves in the ultrasonic beam.
  • the ultrasound beam that is directed by the beam set is received by the interface between the user's finger and the external screen glass of the mobile terminal, and then received by the receiving layer in the ultrasonic fingerprint device to collect fingerprint information, including:
  • the interface between the user's finger and the outer screen glass of the mobile terminal is reflected by the ultrasonic beam
  • the receiving layer in the ultrasonic fingerprint device receives the reflected ultrasonic beam and completes the collection of the fingerprint information.
  • the present invention provides an ultrasonic fingerprint acquisition precision control processing method, a storage medium, and a mobile terminal, the method comprising: transmitting in the ultrasonic fingerprint device when an ultrasonic fingerprint device on the mobile terminal is triggered
  • the layer transmits an ultrasonic beam
  • the preset acoustic wave directing film in the ultrasonic fingerprint device performs beam set orientation on the ultrasonic beam, so that the ultrasonic beam is distributed in a direction perpendicular to the acoustic wave directing film
  • the ultrasonic beam passing through the beam set is directed
  • the invention greatly reduces the noise in the reflected sound wave information received by the receiving layer in the ultrasonic fingerprint device, thereby significantly increasing the accuracy of the fingerprint information collection, thereby improving the unlocking precision.

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Abstract

本发明公开了一种超声波指纹采集精度控制处理方法、存储介质及移动终端，包括：当超声波指纹器件被触发时，发射层发射超声波波束；预设的声波定向膜对超声波波束进行束集定向，使超声波波束集往与声波定向膜垂直的方向传播；经束集定向后的超声波波束通过用户手指与外屏玻璃之间的介面反射后，被接收层接收，采集指纹信息。

Description

超声波指纹采集精度控制处理方法、存储介质及移动终端
本申请要求于2018年2月28日提交中国专利局、申请号为201810169022.9、发明名称为“超声波指纹采集精度控制处理方法、存储介质及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及移动终端技术领域，具体涉及一种超声波指纹采集精度控制处理方法、存储介质及移动终端。
 背景技术
随着智能移动终端的快速普及，智能移动终端已经成为人们日常生活中必不可少的娱乐工具。人们在移动终端中记录并存储着越来越多重要且私密的信息，因此人们对移动终端的数据安全性也越来越重视。
目前，大多数移动终端都是使用指纹解锁技术，并且当前的指纹解锁多采用超声波方案。但是，由于超声波在传播中具有发散性，使得超声波方案在指纹解锁的应用过程中会产生准确度较低、指纹识别不灵敏、解锁失败概率较高及声波返回的无效干扰等问题，给用户的使用带来了不便。
因此，现有技术还有待于改进和发展。
 技术问题
本发明实施例提供一种超声波指纹采集精度控制处理方法、存储介质及移动终端，可以解决现有技术中超声波方案在指纹解锁的应用过程中会产生准确度较低、指纹识别不灵敏、解锁失败概率较高等问题。
 技术解决方案
第一方面，本发明实施例提供一种超声波指纹采集精度控制处理方法，其中，所述方法包括：
当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
所述的超声波指纹采集精度控制处理方法，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束之前，还包括：
预先在所述移动终端上设置用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
所述的超声波指纹采集精度控制处理方法，其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
所述的超声波指纹采集精度控制处理方法，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播，包括：
所述发射层发出的超声波波束往各个方向传播；
当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播还包括：
所述筒形声波定向结构内壁上的吸声材料将所述超声波波束中的无用声波进行阻拦与吸收。
所述的超声波指纹采集精度控制处理方法，其中，所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息，包括：
当束集定向后的超声波波束传播到用户手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
第二方面，本发明实施例提供一种存储介质，其上存储有多条指令，其中，所述指令适于由处理器加载并执行，以实现以下步骤：
当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束之前，还包括：
预先在所述移动终端上设置用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
第三方面，本发明实施例提供一种移动终端，其中，包括：处理器、与处理器通信连接的存储介质，所述存储介质适于存储多条指令；所述处理器适于调用所述存储介质中的指令，以执行实现以下步骤：
当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息；
所述移动终端上设置有用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播，包括：
所述发射层发出的超声波波束往各个方向传播；
当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播还包括：
所述筒形声波定向结构内壁上的吸声材料将所述超声波波束中的无用声波进行阻拦与吸收。
其中，所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息，包括：
当束集定向后的超声波波束传播到用户手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
 有益效果
本发明的有益效果：本发明通过在超声波指纹器件中设置声波定向膜，使绝大多数发射出的超声波波束与反射声波在垂直介面方向上传播，大大降低了超声波指纹器件中的接收层接收到反射声波信息中的噪声，从而显著增加指纹信息采集的准确率，从而提高解锁精度。
 附图说明
图1是本发明实施例提供的超声波指纹采集精度控制处理方法的流程图。
图2是本发明实施例提供的超声波指纹器件的结构示意图。
图3是本发明实施例提供的超声波波束的指向性示意图。
图4是本发明实施例提供的声波定向膜结构示意图。
图5是本发明实施例提供的移动终端的功能原理框图。
图6是本发明实施例提供的移动终端的结构示意图。
 本发明的实施方式
为使本发明的目的、技术方案及优点更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
当前，高屏占比手机（又称全面屏手机）由于其美观与实用性，成为手机消费者的新宠，而越来越多的厂家也开始设计与生产全面屏手机。但是，全面屏的发展会挤占指纹传感器在智能手机及平板正面的位置，但是将指纹传感器放至背面则会降低其易用性，为用户所诟病，因此，屏下指纹解锁技术在移动通讯、智能设备领域仍然具有极大的需求与实用性。当前的指纹解锁多采用超声波方案。但是，由于超声波在传播中具有发散性，使得超声波方案在指纹解锁的应用过程中会产生准确度较低、指纹识别不灵敏、解锁失败概率较高及声波返回的无效干扰等问题。为了解决上述问题，本发明提供一种超声波指纹采集精度控制处理方法，如图1所示，图1是本发明实施例提供的超声波指纹采集精度控制处理方法的流程图。所述超声波指纹采集精度控制处理方法包括以下步骤：
S100、当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束。
所述S100具体包括：
当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
具体实施时，本发明需要预先在移动终端中设置用于采集指纹信息并进行解锁的超声波指纹器件。具体地，如图2所示，图2是本发明实施例提供的超声波指纹器件的结构示意图。所述超声波指纹器件中还设置有：用于发射超声波波束的发射层10；设置在发射层10上，用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜20；设置在所述声波定向膜20上，用于对所述超声波指纹器件实现供电的电路层30；以及设置在所述电路层30上，用于接收超声波波束完成指纹采集的接收层40。
当用户需要对移动终端进行解锁操作时，用户将手指50放置在移动终端上的指纹识别区域（即图2中的外屏玻璃60上）。此时，移动终端接收到用户的指令，向预设的超声波指纹器件发送触发指令，将超声波指纹器件触发。所述超声波指纹器件在触发之后，开始发送超声波波束。
S200、所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
所述S200具体包括：
所述发射层发出的超声波波束往各个方向传播；
当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
具体地，移动终端中的超声波指纹器件其原理是一种超声波换能器，将电能转化为机械能，通过反射把机械能转化为电能。而超声波换能器发射的超声波都具有一定的扩散角，如图3所示，图3是本发明实施例提供的超声波波束的指向性示意图。θ为半扩散角，λ为波长，D为声源晶体有效区域直径。根据公式：θ=arcsin(1.22λ/D)可知，扩散角大小取决于波长与声源晶体有效区域直径的比值：比值大则扩散角大，即超声波的定向性差；比值小则扩散角小，即超声波的定向性好。但是在移动终端中，由于其有限的空间与高集成度，声源晶体尺寸有限，因此扩散角较大，导致接受层40接收到的超声波中有较大噪音。
因此，本发明的声波定向膜20就是用来对超声波波束进行束集定向处理，减小超声波波束的半扩散角θ，使超声波波束集中往与声波定向膜垂直的方向传播。具体地，本发明中的声波定向膜20如图4中所示，图4是本发明实施例提供的声波定向膜结构示意图。所述声波定向膜20上设置有多个筒形声波定向结构210，且所述筒形声波定向结构210的内壁上设置有吸声材料220。当所述发射层10发出的超声波波束之后，所述声波定向膜20上的筒形声波定向结构210对超声波波束进行束集定向，使超声波波束集中往与声波定向膜20垂直的方向传播（图2中的竖直箭头方向）。此外，所述筒形声波定向结构210内壁上的吸声材料220将所述超声波波束中的无用声波进行阻拦与吸收，减少超声波波束中的噪声，提高指纹信息的精确度。
S300、所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
所述S300具体包括：
当束集定向后的超声波波束传播到用户的手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
具体实施时，由于声波定向膜20使超声波波束都集中往垂直方向发射，因此超声波波束经过所述声波定向膜20的束集定向之后，会通过用户手指50与移动终端的外屏玻璃60之间的介面向接受层40反射，从而集中被接受层40接收，采集到手指50上的指纹信息，实现更加精确的指纹信息采集。
基于上述实施例，本发明还公开了一种移动终端，如图5所示，包括：处理器(processor)100、与处理器100连接的存储介质(memory)200；其中，所述处理器100用于调用所述存储介质200中的程序指令，以执行上述实施例所提供的方法，例如执行：
当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
本发明中的移动终端上设置有用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜，从而使绝大多数发射出的超声波波束与反射声波在垂直介面方向上传播，大大降低了接收层接收到反射声波信息中的噪声，从而显著增加指纹信息采集的准确率，从而提高解锁精度。
本发明实施例还提供一种存储介质，所述存储介质上存储计算机指令，所述计算机指令使计算机执行上述各实施例所提供的方法。
图6示出了本发明实施例提供的移动终端的具体结构框图，该移动终端可以用于实施上述实施例中提供的超声波指纹采集精度控制处理方法、存储介质及移动终端。该移动终端1200可以为智能手机或平板电脑。
如图6所示，移动终端1200可以包括RF（Radio Frequency，射频）电路110、包括有一个或一个以上（图中仅示出一个）计算机可读存储介质的存储器120、输入单元130、显示单元140、传感器150、音频电路160、传输模块170、包括有一个或者一个以上（图中仅示出一个）处理核心的处理器180以及电源190等部件。本领域技术人员可以理解，图6中示出的移动终端1200结构并不构成对移动终端1200的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。其中：
RF电路110用于接收以及发送电磁波，实现电磁波与电信号的相互转换，从而与通讯网络或者其他设备进行通讯。RF电路110可包括各种现有的用于执行这些功能的电路元件，例如，天线、射频收发器、数字信号处理器、加密/解密芯片、用户身份模块（SIM）卡、存储器等等。RF电路110可与各种网络如互联网、企业内部网、无线网络进行通讯或者通过无线网络与其他设备进行通讯。上述的无线网络可包括蜂窝式电话网、无线局域网或者城域网。上述的无线网络可以使用各种通信标准、协议及技术，包括但并不限于全球移动通信系统（Global System for Mobile Communication, GSM）、增强型移动通信技术（Enhanced Data GSM Environment, EDGE)，宽带码分多址技术（Wideband Code Division Multiple Access, WCDMA），码分多址技术（Code Division Access, CDMA）、时分多址技术（Time Division Multiple Access, TDMA），无线保真技术（Wireless Fidelity， Wi-Fi）（如美国电气和电子工程师协会标准 IEEE 802.11a， IEEE 802.11b, IEEE802.11g 和/或 IEEE 802.11n）、网络电话（Voice over Internet Protocol, VoIP）、全球微波互联接入（Worldwide Interoperability for Microwave Access， Wi-Max）、其他用于邮件、即时通讯及短消息的协议，以及任何其他合适的通讯协议，甚至可包括那些当前仍未被开发出来的协议。
存储器120可用于存储软件程序以及模块，如上述实施例中超声波指纹采集精度控制处理方法、存储介质及移动终端对应的程序指令/模块，处理器180通过运行存储在存储器120内的软件程序以及模块，从而执行各种功能应用以及数据处理，即实现超声波指纹采集精度控制处理的功能。存储器120可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器120可进一步包括相对于处理器180远程设置的存储器，这些远程存储器可以通过网络连接至移动终端1200。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
输入单元130可用于接收输入的数字或字符信息，以及产生与用户设置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入。具体地，输入单元130可包括触敏表面131以及其他输入设备132。触敏表面131，也称为触摸显示屏或者触控板，可收集用户在其上或附近的触摸操作（比如用户使用手指、触笔等任何适合的物体或附件在触敏表面131上或在触敏表面131附近的操作），并根据预先设定的程式驱动相应的连接装置。可选的，触敏表面131可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器180，并能接收处理器180发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触敏表面131。除了触敏表面131，输入单元130还可以包括其他输入设备132。具体地，其他输入设备132可以包括但不限于物理键盘、功能键（比如音量控制按键、开关按键等）、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元140可用于显示由用户输入的信息或提供给用户的信息以及移动终端1200的各种图形用户接口，这些图形用户接口可以由图形、文本、图标、视频和其任意组合来构成。显示单元140可包括显示面板141，可选的，可以采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode,有机发光二极管)等形式来配置显示面板141。进一步的，触敏表面131可覆盖显示面板141，当触敏表面131检测到在其上或附近的触摸操作后，传送给处理器180以确定触摸事件的类型，随后处理器180根据触摸事件的类型在显示面板141上提供相应的视觉输出。虽然在图6中，触敏表面131与显示面板141是作为两个独立的部件来实现输入和输入功能，但是在某些实施例中，可以将触敏表面131与显示面板141集成而实现输入和输出功能。
移动终端1200还可包括至少一种传感器150，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板141的亮度，接近传感器可在移动终端1200移动到耳边时，关闭显示面板141和/或背光。作为运动传感器的一种，重力加速度传感器可检测各个方向上（一般为三轴）加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用（比如横竖屏切换、相关游戏、磁力计姿态校准）、振动识别相关功能（比如计步器、敲击）等; 至于移动终端1200还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路160、扬声器161，传声器162可提供用户与移动终端1200之间的音频接口。音频电路160可将接收到的音频数据转换后的电信号，传输到扬声器161，由扬声器161转换为声音信号输出；另一方面，传声器162将收集的声音信号转换为电信号，由音频电路160接收后转换为音频数据，再将音频数据输出处理器180处理后，经RF电路110以发送给比如另一终端，或者将音频数据输出至存储器120以便进一步处理。音频电路160还可能包括耳塞插孔，以提供外设耳机与移动终端1200的通信。
移动终端1200通过传输模块170（例如Wi-Fi模块）可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图6示出了传输模块170，但是可以理解的是，其并不属于移动终端1200的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器180是移动终端1200的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器120内的软件程序和/或模块，以及调用存储在存储器120内的数据，执行移动终端1200的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器180可包括一个或多个处理核心；在一些实施例中，处理器180可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器180中。
移动终端1200还包括给各个部件供电的电源190（比如电池），在一些实施例中，电源可以通过电源管理系统与处理器180逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。电源190还可以包括一个或一个以上的直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。
尽管未示出，移动终端1200还可以包括摄像头（如前置摄像头、后置摄像头）、蓝牙模块等，在此不再赘述。具体在本实施例中，移动终端的显示单元是触摸屏显示器，移动终端还包括有用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜，存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行述一个或者一个以上程序包含用于进行以下操作的指令：
当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息；
其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播，包括：
所述发射层发出的超声波波束往各个方向传播；
当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播还包括：
所述筒形声波定向结构内壁上的吸声材料将所述超声波波束中的无用声波进行阻拦与吸收。
其中，所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息，包括：
当束集定向后的超声波波束传播到用户手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
综上所述，本发明提供的一种超声波指纹采集精度控制处理方法、存储介质及移动终端，所述方法包括：当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集往与声波定向膜垂直的方向传播；所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。本发明大大降低了超声波指纹器件中的接收层接收到反射声波信息中的噪声，从而显著增加指纹信息采集的准确率，从而提高解锁精度。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (19)

  1. 一种超声波指纹采集精度控制处理方法，其中，所述方法包括：
    当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
    所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
    所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
  2. 根据权利要求1中所述的超声波指纹采集精度控制处理方法，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束之前，还包括：
    预先在所述移动终端上设置用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
  3. 根据权利要求2中所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
  4. 根据权利要求2中所述的超声波指纹采集精度控制处理方法，其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
  5. 根据权利要求1中所述的超声波指纹采集精度控制处理方法，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
    当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
    当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
  6. 根据权利要求1中所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播，包括：
    所述发射层发出的超声波波束往各个方向传播；
    当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
  7. 根据权利要求6中所述的超声波指纹采集精度控制处理方法，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播还包括：
    所述筒形声波定向结构内壁上的吸声材料将所述超声波波束中的无用声波进行阻拦与吸收。
  8. 根据权利要求1中所述的超声波指纹采集精度控制处理方法，其中，所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息，包括：
    当束集定向后的超声波波束传播到用户手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
    超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
  9. 一种存储介质，其上存储有多条指令，其中，所述指令适于由处理器加载并执行，以实现以下步骤：
    当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
    所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
    所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息。
  10. 根据权利要求9中所述的存储介质，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束之前，还包括：
    预先在所述移动终端上设置用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
  11. 根据权利要求10中所述的存储介质，其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
    12 根据权利要求10中所述的存储介质，其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
  12. 根据权利要求9中所述的存储介质，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
    当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
    当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
  13. 一种移动终端，其中，包括：处理器、与处理器通信连接的存储介质，所述存储介质适于存储多条指令；所述处理器适于调用所述存储介质中的指令，以执行实现以下步骤：
    当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束；
    所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播；
    所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息；
    所述移动终端上设置有用于采集指纹信息并进行解锁的超声波指纹器件；所述超声波指纹器件中设置有用于对超声波波束进行束集定向，使超声波波束集中往垂直方向传播的声波定向膜。
  14. 根据权利要求14中所述的移动终端，其中，所述超声波指纹器件中还设置有：用于发射超声波波束的发射层，所述声波定向膜设置在发射层上；设置在所述声波定向膜上，用于对所述超声波指纹器件实现供电的电路层；以及设置在所述电路层上，用于接收超声波波束完成指纹采集的接收层。
  15. 根据权利要求14中所述的移动终端，其中，所述声波定向膜中设置有多个筒形声波定向结构，且所述筒形声波定向结构的内壁上设置有吸声材料。
  16. 根据权利要求14中所述的移动终端，其中，所述当移动终端上的超声波指纹器件被触发时，所述超声波指纹器件中的发射层发射超声波波束，包括：
    当用户将手指放置在移动终端上的指纹识别区域时，移动终端接收用户的指令，触发超声波指纹器件；
    当所述超声波指纹器件被触发时，所述超声波指纹器件中的发射层发出超声波波束。
  17. 根据权利要求14中所述的移动终端，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播，包括：
    所述发射层发出的超声波波束往各个方向传播；
    当超声波波束经过所述声波定向膜时，所述声波定向膜上的筒形声波定向结构对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播。
  18. 根据权利要求18中所述的移动终端，其中，所述超声波指纹器件中预设的声波定向膜对超声波波束进行束集定向，使超声波波束集中往与声波定向膜垂直的方向传播还包括：
    所述筒形声波定向结构内壁上的吸声材料将所述超声波波束中的无用声波进行阻拦与吸收。
  19. 根据权利要求14中所述的移动终端，其中，所述经束集定向后的超声波波束通过用户手指与移动终端的外屏玻璃之间的介面反射之后，被超声波指纹器件中的接收层接收，采集指纹信息，包括：
    当束集定向后的超声波波束传播到用户手指与移动终端的外屏玻璃之间的介面时，所述用户手指与外屏玻璃之间的介面对超声波波束进行反射；
    超声波指纹器件中的接收层接收反射的超声波波束，完成指纹信息的采集。
PCT/CN2019/076584 2018-02-28 2019-02-28 超声波指纹采集精度控制处理方法、存储介质及移动终端 WO2019165999A1 (zh)

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