WO2019136757A1 - Procédé et appareil de détection de pression d'un système de reconnaissance d'empreintes digitales et dispositif terminal - Google Patents

Procédé et appareil de détection de pression d'un système de reconnaissance d'empreintes digitales et dispositif terminal Download PDF

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Publication number
WO2019136757A1
WO2019136757A1 PCT/CN2018/072670 CN2018072670W WO2019136757A1 WO 2019136757 A1 WO2019136757 A1 WO 2019136757A1 CN 2018072670 W CN2018072670 W CN 2018072670W WO 2019136757 A1 WO2019136757 A1 WO 2019136757A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
pressing
area
pressing operation
floating window
Prior art date
Application number
PCT/CN2018/072670
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English (en)
Chinese (zh)
Inventor
王骐骥
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to CN201880000048.9A priority Critical patent/CN108323195B/zh
Priority to PCT/CN2018/072670 priority patent/WO2019136757A1/fr
Publication of WO2019136757A1 publication Critical patent/WO2019136757A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • 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
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms

Definitions

  • the present application relates to the field of fingerprint recognition, and in particular, to a method, device and terminal device for detecting a press of a fingerprint identification system.
  • the fingerprint device is assembled on the back of the screen.
  • the screen notifies the fingerprint device to collect the fingerprint image after the user presses the event in the fingerprint sensing area, and completes the fingerprint input. Or identify the operation.
  • the fingerprint image collected by the fingerprint device is incomplete. If the fingerprint image is used for input or identification by the user, the operation may fail and affect the user experience.
  • the embodiment of the present application provides a method, a device, and a terminal device for detecting a press of a fingerprint identification system, which are beneficial to improving user experience.
  • a method for detecting a press of a fingerprint identification system includes a screen and a fingerprint device.
  • the sensing area of the fingerprint device is at least partially located in a display area of the screen.
  • the method includes: acquiring on the screen a pressing area of the fingerprint pressing operation; determining an overlapping ratio of the pressing area of the fingerprint pressing operation and the sensing area of the fingerprint device; determining, according to the overlapping ratio, the validity of the fingerprint pressing operation, the validity of the fingerprint pressing operation including the effective fingerprint Press or invalid fingerprint press.
  • the overlapping ratio of the pressing area of the user's fingerprint pressing operation and the sensing area of the fingerprint device Obtaining the overlapping ratio of the pressing area of the user's fingerprint pressing operation and the sensing area of the fingerprint device, and determining whether the fingerprint pressing operation is a valid fingerprint pressing according to the size relationship between the overlapping ratio and the threshold value, so that the user usage process can be filtered out in advance
  • the problem that the fingerprint template collected by the fingerprint recognition system is incomplete or the fingerprint recognition fails due to incomplete pressing may be effectively avoided, and a certain anti-missing and anti-counterfeiting function may also be provided.
  • the determining the ratio of the pressing area of the fingerprint pressing operation to the sensing area of the fingerprint device comprises: dividing the sensing area of the fingerprint device into N sub-regions, where N is greater than 1 An integer; obtaining a center point coordinate of each of the N sub-regions; determining, according to a center point coordinate of each sub-region, a number M of sub-regions within the pressing region of the fingerprint pressing operation, M being an integer less than or equal to N
  • the ratio M/N between the number M of sub-regions located in the pressing region and the total number N of sub-regions of the sensing region is determined as the overlapping ratio of the pressing region to the sensing region.
  • the terminal device may acquire coordinates of other points of each sub-area as position information of the each sub-area, for example, coordinates of an upper left corner of each sub-area.
  • the method before acquiring the pressing area of the fingerprint pressing operation, the method further includes: acquiring information of the sensing area of the fingerprint device, where the information of the sensing area of the fingerprint device includes the sensing area of the fingerprint device Location and size information.
  • the terminal device may first acquire the sensing area of the fingerprint device every time the fingerprint pressing operation is detected, and the terminal device may also acquire only the sensing area of the fingerprint device once, and store the sensing area of the fingerprint device. information.
  • the sensing area can also be pre-stored inside the storage module of the terminal device, that is to say, the terminal device stores the information of the sensing area of the fingerprint device inside the terminal device.
  • the acquiring information of the sensing area of the fingerprint device includes: displaying a preview view on the screen, the preview view being an acquired view of the fingerprint device; providing an adjustable on the screen a pattern floating window; the pattern floating window is adjusted such that the preview view displays a complete pattern of the pattern floating window and the pattern of the pattern floating window spreads the entire preview view; obtaining position and size information of the pattern floating window, and The position and size information of the pattern floating window is determined as information of the sensing area of the fingerprint device.
  • the pattern floating window is operated, including: moving the pattern floating window, so that the pattern floating window is complete. Covering the sensing area of the fingerprint device.
  • the pattern floating window is operated, including: moving the pattern floating window, and adjusting the pattern floating window
  • the size of the pattern floating window is the same as the sensing area and completely covers the sensing area of the fingerprint device.
  • the acquiring a pressing area of the fingerprint pressing operation of the screen comprises: determining a pressing area of the fingerprint pressing operation according to the touch detection data reported by the screen.
  • the touch detection data includes a center point coordinate of the pressing area, a long axis direction of the pressing area, a long axis value of the pressing area, and the pressing a short axis value of the region; if the shape of the pressing region is a circle, the touch detection data includes a center point coordinate of the pressing region and a radius of the pressing region.
  • the touch detection data includes coordinates of all contacts of the fingerprint pressing operation on the screen, and the pressing area of the fingerprint pressing operation of the screen is obtained, including: according to coordinates of all the contacts The pressed area of the fingerprint pressing operation is fitted.
  • determining the validity of the fingerprint pressing operation according to the overlapping ratio including: determining that the validity of the fingerprint pressing operation is an effective fingerprint pressing if the overlapping ratio is greater than or equal to the threshold; or The overlap ratio is less than the threshold, and the validity of the fingerprint pressing operation is determined to be an invalid fingerprint press.
  • the method further includes prompting the user to perform a fingerprint pressing operation again if it is determined that the validity of the fingerprint pressing operation is an invalid fingerprint pressing.
  • the method further includes: controlling the fingerprint device to perform fingerprint image collection in a case where it is determined that the validity of the fingerprint pressing operation is an effective fingerprint pressing.
  • a press detection device for a fingerprint identification system for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the apparatus may comprise means for performing the method of the first aspect or any possible implementation of the first aspect.
  • a terminal device including a memory, a processor, a screen, and a fingerprint device for storing a computer program, the processor is configured to call and run a computer program from the memory, when the program is executed, the processor The method of any of the above first aspect or any of the possible implementations of the first aspect is performed.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the first aspect or the optional implementation of the first aspect.
  • FIG. 1 is a schematic block diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic block diagram showing a method of detecting a press of a fingerprint identification system according to an embodiment of the present application.
  • Figure 3 shows a schematic block diagram of the sensing area of the segmented fingerprint device.
  • FIG. 4 shows a schematic block diagram of a sub-region center point of a sensing area of a fingerprint device falling into a pressing area.
  • Figure 5 shows a schematic block diagram of a preview view and a pattern floating window.
  • Figure 6 shows another schematic block diagram of a preview view and a pattern floating window.
  • Fig. 7 shows a schematic block diagram of a pressing area pressed by a user.
  • Fig. 8 shows another schematic block diagram of a pressing area pressed by a user.
  • FIG. 9 is a schematic block diagram of a press detecting device of a fingerprint identification system of an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a terminal device of an embodiment of the present application.
  • the so-called on-screen or on-screen fingerprint recognition system refers to the installation of the fingerprint device under the screen or integrated into the screen to realize the fingerprint recognition operation inside the screen display area.
  • the fingerprint detection method of the fingerprint identification system can be applied to a smart phone, a tablet computer, a multimedia device, a game machine, and other mobile terminals or other terminal devices having a display screen;
  • the fingerprint identification system may be specifically an optical fingerprint system, an ultrasonic fingerprint system or other types of fingerprint identification systems, wherein the fingerprint device may be disposed in a partial or all area below the display screen of the terminal device, or directly It is integrated into the display of the terminal device to form an on-screen fingerprint recognition system or an on-screen fingerprint recognition system.
  • the terminal device 100 adopts an on-screen optical fingerprint identification scheme.
  • the terminal device 100 includes a display screen 120 and an optical fingerprint device 130 , wherein the optical fingerprint device 130 is attached or otherwise It is fixedly disposed below the display screen 120.
  • the display screen 120 can be a self-illuminating display screen, which adopts a self-luminous display unit as a display pixel, such as an Organic Light-Emitting Diode (OLED) display or a Micro-LED display.
  • the display screen 120 may also be a liquid crystal display (LCD) or other passive light-emitting display, which is not limited in this application.
  • the display screen 120 is specifically a touch display screen, which can not only display the screen but also detect the touch or pressing operation of the user, thereby providing the user with a human-computer interaction interface.
  • the terminal device 100 may include a touch sensor, and the touch sensor may be specifically a touch panel (TP), which may be disposed on the surface of the display screen 120, or may be partially Integrated or integrated into the display screen 120 to form the touch display.
  • TP touch panel
  • the optical fingerprint device 130 is mainly used to collect a fingerprint image of a user, which may be disposed at least in a partial area below the display screen 120, so that the sensing area (or the fingerprint effective detection area) 103 of the optical fingerprint device 130 is at least A portion is located in the display area 102 of the display screen 120.
  • the optical fingerprint device 130 may be an optical fingerprint sensor, which includes a sensing array having a plurality of optical sensing units, and the sensing array is located in the fingerprint identification area 103 of the optical fingerprint device 130. As shown in FIG. 1 , the fingerprint identification area 103 is located in the display area 102 of the display screen 120. Therefore, when the user needs to unlock the terminal device or other fingerprint verification, the user only needs to press the finger at The fingerprint input area 103 of the display screen 120 can realize fingerprint input.
  • the terminal device 100 Since the fingerprint detection can be implemented inside the display area 102 of the display screen 120, the terminal device 100 adopting the above structure does not need to reserve space for the front side to set a fingerprint button (such as a Home button), so that a full screen scheme can be adopted, therefore, The display area 102 of the display screen 120 can be substantially extended to the entire front side of the terminal device 100.
  • a fingerprint button such as a Home button
  • the fingerprint identification system of the terminal device 100 may also adopt an ultrasonic or other type of fingerprint recognition system, correspondingly.
  • the optical fingerprint sensor may be replaced by an ultrasonic fingerprint sensor or other type of fingerprint sensor; in addition, in other alternative embodiments, the fingerprint sensor may also be integrated into the display screen 120 or disposed at the terminal device. Any area inside 100 (such as an edge area) and directs a fingerprint detection signal to the fingerprint sensor through a guiding structure of an optical path or other signal.
  • the present application does not particularly limit the type and specific structure of the fingerprint sensor, as long as the above fingerprint sensor can meet the performance requirements for fingerprint recognition inside the display screen of the terminal device.
  • the display screen 120 is an OLED display, which has an array of OLED display units arranged in an array.
  • the optical fingerprint device 130 can be located in the fingerprint identification area 103 by using the OLED display 120.
  • the OLED display unit ie, the OLED light source
  • the sensing array of the optical fingerprint device 130 is specifically a photo detector array including a plurality of photodetectors distributed in an array, and the photodetectors can be used as the optical sensing unit as described above.
  • the light emitted by the display unit of the fingerprint recognition area 103 reflects on the fingerprint of the finger surface and forms reflected light.
  • the reflected light of the ridges and valleys of the fingerprint of the finger is different, and the reflected light is received from the display screen 120 and received by the photodetector array and converted into a corresponding electrical signal, that is, a fingerprint detection signal.
  • Fingerprint image data can be obtained based on the fingerprint detection signal, and fingerprint matching verification can be further performed, thereby implementing an optical fingerprint recognition function at the terminal device 100.
  • the optical fingerprint device 130 may also be disposed over the entire area below the display screen 120, thereby extending the fingerprint identification area 103 to the entire display area 102 of the display screen 120, Full screen fingerprint detection.
  • the terminal device 100 further includes a transparent protective cover 110, and the cover plate 110 may be a transparent cover plate, such as a glass cover or a sapphire cover, which is located on the display screen.
  • the so-called finger pressing the display screen 120 may actually refer to the cover plate 110 pressed by the finger on the display screen 120 or the surface of the protective layer covering the cover plate 110.
  • the optical fingerprint device 130 may include an optical component 132 and an optical detection unit 134; the optical component 132 may include an optical path modulator and a filter layer, wherein The optical path modulator may include an array of vias, and the filter layer may be disposed under the optical path modulator.
  • the light emitted by the display screen 120 is reflected on the surface of the finger to be detected above the display screen 120.
  • the light path modulator collimates and modulates the reflected light reflected from the surface of the finger through the array of through holes, and reflects the reflected light. Guided to the filter layer, the reflected light is filtered by the filter layer and then received by the optical detecting unit 134.
  • the optical detecting unit 134 can further detect the received reflected light to implement fingerprint recognition. It should be understood that the above optical fingerprint device 130 is merely an exemplary structure.
  • the position of the filter layer of the optical component 132 is not limited to the optical path modulator; for example, in an alternative
  • the filter layer may also be disposed between the optical path modulator and the display screen 120, that is, above the optical path modulator; or the optical component 132 may include two layers of filter layers. Both are disposed above and below the optical path modulator, respectively.
  • the filter layer can also be integrated into the optical path modulator, or even omitted. This application does not limit this.
  • the optical component 132 may be packaged in the same optical fingerprint chip as the optical detecting unit 134, or may be installed inside the optical fingerprint device as a component independent of the optical detecting unit 134.
  • the optical path modulator may be specifically a collimator layer or a lens (Lens) layer made of a semiconductor silicon wafer or a silicon oxide or a nitride, and has a plurality of collimating units or lens units.
  • the collimating unit or the lens unit may be used as a modulating unit of the optical path modulator.
  • the modulating unit may be specifically a through hole having a high aspect ratio, so that the plurality of collimating units or lens units may constitute The above-mentioned via array of the optical path modulator.
  • the light incident on the modulation unit can pass through and be received by the optical sensing unit below it, and each optical sensing unit can basically receive the through hole above it.
  • the fingerprint pattern reflects the light so that the sensing array can detect the fingerprint image of the finger.
  • each modulation unit of the optical path modulator may respectively correspond to one of the optical sensing units of the sensing array; alternatively, the modulation unit and the optical sensing unit of the sensing array A non-one-to-one correspondence may also be used to reduce the occurrence of moiré interference.
  • an optical sensing unit may correspond to a plurality of modulation units, or the modulation unit may also be implemented in an irregular arrangement. There is no specific correspondence between the optical sensing units of the array.
  • the optical fingerprint device 130 can correct the reflected light detected by each sensing unit by a post-software algorithm.
  • the fingerprint device 130 may be only disposed in the A partial area of the display screen 120, or the sensing area 103 of the fingerprint device 130, only covers a partial display area of the display screen 120. In this case, the user of the terminal device 100 itself cannot perceive the fingerprint detection effective range on the display screen 120.
  • the display screen 120 senses the user pressing event through the touch detection function when the user performs the fingerprint pressing operation, and then notifies the fingerprint device 130 to collect the fingerprint image through the operating system. And further complete the user fingerprint input or identification operation.
  • the embodiment of the present application first provides a method for detecting a fingerprint of a fingerprint identification system. Before the fingerprint device collects a fingerprint image, it is determined whether the fingerprint pressing operation of the current user is a valid fingerprint compression.
  • FIG. 2 is a schematic block diagram of a press detection method 200 of the fingerprint identification system of the embodiment of the present application.
  • the method may be performed by a terminal device, for example, by a processor in a terminal device, and the terminal device may adopt a structure as shown in FIG. 1, that is, is disposed under a screen (such as the above display screen 120).
  • the fingerprint device (such as the optical fingerprint device 130 described above) may alternatively employ a screen-down or in-screen fingerprint recognition system of other configurations.
  • the method 200 includes some or all of the following:
  • S230 Determine validity of the fingerprint pressing operation according to the overlapping ratio, and the validity of the fingerprint pressing operation includes an effective fingerprint pressing or an invalid fingerprint pressing. For example, when the overlapping ratio is greater than or equal to the threshold, it is determined that the fingerprint pressing operation is a valid fingerprint pressing, otherwise, the fingerprint pressing operation is determined to be an invalid fingerprint pressing.
  • the user may perform a fingerprint pressing operation on the screen of the terminal device.
  • the terminal device may acquire the pressing of the fingerprint pressing operation of the user on the screen.
  • the area for example, the terminal device can detect the coordinate information of the user's fingerprint pressing operation on all the contacts of the screen through the touch sensor of the screen (such as a touch screen), and fit the coordinate information of the contact to the fingerprint pressing operation. Pressing area.
  • the terminal device can obtain the sensing area of the fingerprint device in advance, for example, the terminal device can obtain the location and size of the fingerprint device in advance, and the terminal device can press the pressed area of the obtained fingerprint pressing operation and the sensing of the fingerprint device.
  • the terminal device can compare the overlapping ratio with the threshold to determine the validity of the fingerprint pressing operation, that is, determine that the fingerprint pressing operation is an effective fingerprint pressing Still invalid fingerprint press.
  • the threshold may be preset within the system of the terminal device or set according to the user experience.
  • the method for detecting the pressure of the fingerprint recognition system of the embodiment of the present invention determines the overlapping ratio of the pressing area of the fingerprint pressing operation of the user and the sensing area of the fingerprint device, and determines the fingerprint pressing according to the relationship between the overlapping ratio and the threshold value. Whether the operation is a valid fingerprint pressing, so that the invalid fingerprint pressing caused by the incomplete pressing during the user's use can be filtered out in advance, thereby effectively avoiding the problem that the fingerprint template collected by the fingerprint recognition system is incomplete or the fingerprint recognition fails due to incomplete pressing. In addition, it can also have certain anti-missing and anti-counterfeiting functions.
  • determining an overlapping ratio of the pressing area of the fingerprint pressing operation and the sensing area of the fingerprint device may specifically include:
  • N is a positive integer greater than one
  • a ratio M/N between the number M of sub-regions located in the pressing region and the total number N of sub-regions of the sensing region is determined as an overlapping ratio of the pressing region to the sensing region.
  • the terminal device may divide the sensing area of the fingerprint device into N sub-areas after acquiring the location and size of the sensing area of the fingerprint device.
  • the sensing area of the fingerprint device may be divided into N sub-regions, wherein each sub-region has an equal area; and the terminal device acquires location information of each sub-region, where the location information of each sub-region may be specifically a center point coordinate of each sub-region; and further, the terminal device may according to the fingerprint Pressing the pressed area of the operation and the position information of each of the sub-areas, calculating the number of sub-areas located in the pressing area of the fingerprint pressing operation, and assuming that the number of sub-areas falling into the pressing area of the fingerprint pressing operation is M, the terminal device may The ratio M/N of the number of pressing points in which the center point coordinates fall into the fingerprint pressing operation and the total number of sub-regions of the sensing area of the fingerprint device is determined as the overlap of the pressing area of the fingerprint pressing operation and the sensing area of the fingerprint device proportion
  • the overlap ratio M/N can be compared with a threshold to determine the validity of the fingerprint press operation.
  • location information of each sub-region may also be other point coordinates, for example, may be the coordinates of the upper left corner of each sub-region. This embodiment of the present application does not limit this.
  • the sensing area of the fingerprint device is equally divided into 4*4 sub-areas, assuming that the upper left corner coordinate of the sensing area of the fingerprint device is [0, 0], and the width and height of the sensing area are both
  • the coordinates of the center point of the first sub-area in the upper left are [50, 50]
  • the coordinates of the center point of the first sub-area in the upper right are [350, 50].
  • the coordinates of the center point of other sub-areas can also be correspondingly determine.
  • the terminal device acquires the pressing area of the fingerprint pressing operation, it may first determine that the center point coordinates fall into the sub-area of the pressing area in the sensing area of the fingerprint device as shown in FIG.
  • the validity of the fingerprint pressing operation may be determined according to the relationship between the ratio of the number M of sub-regions falling in the pressing region and the total number N of sub-regions of the sensing region to a preset threshold, for example, the threshold may be 50%, then the fingerprint pressing operation in the left diagram of FIG. 4 is an effective fingerprint pressing, and the fingerprint pressing operation in the right drawing of FIG. 4 is an invalid fingerprint pressing.
  • the method before acquiring the pressing area of the fingerprint pressing operation, the method further includes: acquiring information of the sensing area of the fingerprint device, where the information of the sensing area includes the location and size of the sensing area. .
  • the terminal device can first acquire the coordinates of the center point of each sub-area of the sensing area of the fingerprint device every time the fingerprint pressing operation is detected, that is, the terminal device can first sense the fingerprint device before determining the area ratio each time.
  • the area is divided into N sub-areas, and the coordinates of the center point of each sub-area are obtained. Since the location and size of the fingerprint device are fixed for a certain terminal device, that is, the information of the sensing region is fixed, the terminal device can store the sensing region of the fingerprint device by its internal storage module at the time of shipment.
  • the information, or the terminal device may also detect the information of the sensing area of the fingerprint device in advance, and store the information of the sensing area through its internal storage module.
  • the terminal device can obtain the information of the sensing area of the fingerprint device from the internal storage module, and divide the sensing area of the fingerprint device into N sub-regions, thereby acquiring each sub-region.
  • the coordinates of the center point of the area may equally divide the sensing area in a fixed division manner, and store coordinate information of the center point of each sub-area through its internal storage module. That is to say, each time the terminal device detects the fingerprint pressing operation, the terminal device can acquire the center point coordinates of each sub-area of the sensing area from its internal storage module.
  • the terminal device may also neither store the information of the sensing area of the fingerprint device nor the center point coordinate information of each sub-area of the sensing area, but perform the fingerprint pressing operation every time.
  • the sensing area of the fingerprint device detects and divides the sensing area into a plurality of sub-areas in real time, thereby obtaining center point coordinate information of each sub-area.
  • the terminal device may also compare the pressed area of the acquired fingerprint pressing operation with the sensing area of the fingerprint device, and further may determine an overlapping portion of the two areas, and The area is determined as the effective pressing area of the fingerprint pressing operation. Further, the terminal device may use the area ratio of the effective pressing area of the fingerprint pressing operation and the sensing area of the fingerprint device as the pressing area of the fingerprint pressing operation and the The ratio of the overlap of the sensing areas of the fingerprint device.
  • the information of the sensing area of the fingerprint device may be obtained by means of software detection.
  • the information acquisition of the sensing area of the fingerprint device may include:
  • the preview view being an acquisition view of the fingerprint device
  • An adjustable pattern floating window is provided on the screen
  • the position and size information of the pattern floating window is obtained and determined as information of the sensing area of the fingerprint device.
  • the terminal device may acquire the information of the sensing area of the fingerprint device by combining the preview view and the pattern floating window. As shown in FIG. 5, the terminal device may first generate a preview view on the screen, and the display driver module of the terminal device may drive the screen to display the captured view of the fingerprint device in real time in the preview view, that is, display the captured device by the fingerprint device. The image corresponding to the image data.
  • the terminal device can also generate a pattern floating window on the screen, and the position and size of the pattern floating window can be adjusted.
  • the pattern floating window can modify the position and size, and supports arbitrary dragging.
  • the terminal device can also display the position and size information of the pattern floating window in real time in a predetermined area of the screen, wherein the position of the pattern floating window can be represented by the center coordinate of the current location of the pattern floating window, the pattern
  • the size of the floating window can be expressed by the width and height of the floating window of the pattern (if the floating window of the pattern is square, its size can be represented by the length of the side).
  • the pattern floating window has a square shape with a center coordinate of [400, 400] and a side length of 200.
  • the pattern floating window needs to have a pattern such that when the pattern floating window is moved to the sensing area of the fingerprint device, the pattern of the pattern floating window can be displayed in the preview view.
  • the terminal device can adjust the position of the pattern floating window, such as moving the pattern floating window.
  • the user can drag the pattern floating window through the human-computer interaction interface provided by the screen, the terminal The device controls the position of the pattern floating window according to the user's drag operation, and the terminal device can also modify the size of the pattern floating window, so that the preview view can display the complete pattern of the pattern floating window and ensure the pattern suspension.
  • the pattern of the window is covered with the entire preview view, as shown in Figure 6.
  • the pattern floating window completely covers the sensing area of the fingerprint device, so the position and size of the pattern floating window represent the position and size of the sensing area of the fingerprint device, and then the pattern displayed on the screen of the terminal device
  • the center point coordinates [300, 550] and the side length (90) of the floating window are the coordinates of the center point and the side length of the sensing area of the fingerprint device. Therefore, the terminal device can acquire the position and size information of the pattern floating window and determine it as the information of the sensing area of the fingerprint device.
  • adjusting the pattern floating window specifically includes: moving the pattern floating window to make the pattern floating window The sensing area of the fingerprint device is completely covered.
  • adjusting the pattern floating window specifically includes: moving the pattern floating window, and adjusting the pattern floating
  • the size of the window is such that the pattern floating window is the same size as the sensing area and completely covers the sensing area.
  • the shape of the pattern floating window may not be limited. It may be a square as shown in Fig. 5, or may be a rectangle, or may be a circle or an ellipse.
  • the shape of the pattern floating window is the same as the shape of the sensing area of the fingerprint device.
  • the size of the pattern floating window should be the same as the size of the sensing area.
  • the terminal device can set the shape of the pattern floating window to be the same as the shape of the sensing area of the fingerprint device when the pattern floating window is initially generated. If the sizes of the two are different, the pattern floating window is adjusted, and the pattern needs to be moved.
  • Suspending the window to the sensing area of the fingerprint device also requires modifying the size of the pattern floating window.
  • the terminal device may also set the shape and size of the pattern floating window to be the same as the shape and size of the sensing area of the fingerprint device when initially generating the pattern floating window, so when the pattern floating window is adjusted, only the pattern needs to be moved.
  • the floating window can be applied to the sensing area of the fingerprint device.
  • the captured view of the fingerprint device displayed by the preview view may be an image proportional to the image data acquired by the fingerprint device, or may be the image after being enlarged or reduced.
  • the size of the preview view is not limited in this embodiment of the present application.
  • the preview view and the pattern floating window may be in a deactivated state, that is, the preview view and the pattern floating window may acquire the fingerprint device only when acquiring the terminal device.
  • the information of the sensing area is only activated.
  • the step of acquiring the pressing area of the fingerprint pressing operation of the screen may specifically include: determining the pressing area according to the touch detection data reported by the screen.
  • the pressing area of the fingerprint pressing operation is generally circular or elliptical.
  • the touch sensor such as a touch screen
  • the position and size of the pressing area of the fingerprint pressing operation are detected.
  • the touch sensor may report the touch detection data of the pressing area to the processor of the terminal device, and the processor may determine the fingerprint pressing operation according to the touch detection data of the pressing area. The position and size of the pressed area.
  • the touch detection data reported by the touch sensor to the processor may include a center point coordinate of the pressing area, a long axis direction of the pressing area, and the pressing area.
  • the long axis value and the short axis value of the pressed area may be included in other alternative embodiments, if the shape of the pressing area is circular, the touch detection data reported by the touch sensor to the processor may include a center point coordinate of the pressing area and a radius of the pressing area.
  • the touch detection data may include the coordinates of all the contacts of the fingerprint pressing operation on the screen
  • the step of acquiring the pressing area of the fingerprint pressing operation of the screen may specifically include: Acquiring the user's fingerprint to press the coordinate information of all the contacts of the screen, fitting the coordinate information of all the contacts, and determining the pressing area of the fingerprint pressing operation, for example, determining the position of the pressing area and size.
  • the method for acquiring the pressing area of the fingerprint pressing operation of the embodiment of the present application may be performed by a processor of the terminal device or by a touch sensor of the screen, that is, when the touch sensor of the screen detects the fingerprint pressing of the user.
  • the coordinates of all the contacts can be directly matched by the touch sensor, so that the pressing area of the fingerprint pressing operation can be determined, and the touch sensor can also
  • the coordinates of all the contacts are reported to the processor, and the coordinates of all the contacts are fitted by the processor, so that the pressing area of the fingerprint pressing operation can be determined by the processor.
  • the pressing area specifically fitted by the processor or the touch sensor in the embodiment of the present application is as shown in FIG. 8 .
  • each step in the press detection method of the fingerprint identification system of the embodiment of the present application may be performed by a processor of the terminal device, or may be performed by a touch sensor of the screen, or may be combined with a touch sensor of the screen.
  • the implementation of the present application is not limited thereto.
  • determining the validity of the fingerprint pressing operation according to the overlapping ratio of the pressing area and the sensing area including: if the overlapping ratio is greater than or equal to the threshold, determining that the fingerprint pressing operation is The effective fingerprint is pressed; or if the overlapping ratio is less than the threshold, it is determined that the fingerprint pressing operation is an invalid fingerprint pressing.
  • the method further includes: prompting the user to perform the fingerprint pressing operation again, if it is determined that the validity of the fingerprint pressing operation is an invalid fingerprint pressing.
  • the terminal device determines that the fingerprint pressing operation is an invalid fingerprint pressing
  • different vendors may use different interaction modes, for example, the user may directly prompt the user to perform fingerprint input through text, or prompt the user to perform the re-operation through vibration feedback.
  • Fingerprint input such as shaking twice (generally shaking twice means failure), or you can not do any feedback.
  • the terminal device can make the user clear the current fingerprint pressing operation by prompting the user to perform the fingerprint pressing operation again when determining that the current user's fingerprint pressing operation is an invalid fingerprint pressing operation. Effectiveness, so that the next press can be quickly performed when necessary to improve the user experience.
  • the method further includes: controlling the fingerprint device to perform fingerprint image collection in a case where it is determined that the validity of the fingerprint pressing operation is an effective fingerprint pressing.
  • the screen of the terminal device senses the user pressing event of the sensing area of the fingerprint device through the touch detection function, that is, the user is detected
  • the fingerprint pressing operation of the screen first determines whether the fingerprint pressing operation is a valid fingerprint pressing. If the fingerprint is pressed, the fingerprint device is triggered to perform fingerprint image capturing, thereby completing the fingerprint input or recognition operation.
  • FIG. 9 is a schematic block diagram of a press detecting device 300 of the fingerprint recognition system of the embodiment of the present application.
  • the fingerprint recognition system includes a screen and a fingerprint device, and the sensing area of the fingerprint device is at least partially located in a display area of the screen.
  • the device 300 includes:
  • a first obtaining unit 310 configured to acquire a pressing area of a fingerprint pressing operation on the screen
  • a first determining unit 320 configured to determine an overlapping ratio of a pressing area of the fingerprint pressing operation and a sensing area of the fingerprint device
  • the second determining unit 330 is configured to determine validity of the fingerprint pressing operation according to the overlapping ratio, and the validity of the fingerprint pressing operation includes an effective fingerprint pressing or an invalid fingerprint pressing.
  • the pressing detection device of the fingerprint identification system of the embodiment of the present invention determines the overlapping ratio of the pressing area of the user's fingerprint pressing operation and the sensing area of the fingerprint device, and determines the fingerprint pressing according to the size relationship between the overlapping ratio and the threshold value. Whether the operation is a valid fingerprint pressing, so that the invalid fingerprint pressing caused by the incomplete pressing during the user's use can be filtered out in advance, thereby effectively avoiding the problem that the fingerprint template collected by the fingerprint recognition system is incomplete or the fingerprint recognition fails due to incomplete pressing. In addition, it can also have certain anti-missing and anti-counterfeiting functions.
  • the first determining unit is specifically configured to: divide the sensing area of the fingerprint device into N sub-regions, where N is a positive integer greater than 1, and acquire each sub-region of the N sub-regions. Center point coordinates; determining the number M of sub-regions located in the pressing area of the fingerprint pressing operation, M is an integer less than or equal to N; the number M of sub-regions located in the pressing area and the total number of sub-regions of the sensing area The ratio M/N between N is determined as the overlapping ratio of the pressing area to the sensing area.
  • the device further includes: a second acquiring unit, configured to acquire information about a sensing area of the fingerprint device before the first acquiring unit acquires the pressing area of the fingerprint pressing operation, where The information of the sensing area of the fingerprint device includes the location and size information of the sensing area of the fingerprint device.
  • the second obtaining unit is specifically configured to display a preview view on the screen, where the preview view is an acquisition view of the fingerprint device, and an adjustable pattern suspension is provided on the screen.
  • a window adjusting the pattern floating window such that the preview view displays a complete pattern of the pattern floating window and the pattern of the pattern floating window covers the entire preview view; obtaining position and size information of the pattern floating window, and The position and size information of the pattern floating window is determined as information of the sensing area of the fingerprint device.
  • the second acquiring unit adjusts the pattern floating window, including: moving the pattern floating window The pattern floating window completely covers the sensing area of the fingerprint device.
  • the second acquiring unit adjusts the pattern floating window, including: moving the pattern floating window And adjusting the size of the pattern floating window such that the pattern floating window is the same size as the sensing area and completely covers the sensing area of the fingerprint device.
  • the first acquiring unit is specifically configured to: determine, according to the touch detection data reported by the screen, a pressing area of the fingerprint pressing operation.
  • the touch detection data includes a center point coordinate of the pressing area, a long axis direction of the pressing area, a long axis value of the pressing area, and a short axis value of the pressing region; if the shape of the pressing region is a circle, the touch detection data includes a center point coordinate of the pressing region and a radius of the pressing region.
  • the touch detection data includes coordinates of all the contacts of the fingerprint pressing operation on the screen
  • the first acquiring unit is specifically configured to: fit the coordinates according to the coordinates of all the contacts The pressing area of the fingerprint pressing operation.
  • the second determining unit is specifically configured to: if the overlapping ratio is greater than or equal to the threshold, determine that the validity of the fingerprint pressing operation is a valid fingerprint pressing; or if the overlapping ratio is less than the threshold And determining that the validity of the fingerprint pressing operation is an invalid fingerprint pressing.
  • the device further includes: a prompting unit, configured to prompt the user to perform a fingerprint pressing operation if the second determining unit determines that the validity of the fingerprint pressing operation is an invalid fingerprint pressing .
  • the device further includes: a control unit, configured to control the fingerprint device to perform fingerprint image collection if the second determining unit determines that the fingerprint pressing operation is an effective fingerprint pressing.
  • the press detecting device 300 of the fingerprint recognition system may correspond to the execution subject in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the device 300 are respectively implemented in order to implement FIG. 2 to FIG.
  • the corresponding flow of the method 200 in FIG. 8 is not repeated here for brevity.
  • the embodiment of the present application further provides a terminal device, where the terminal device includes a fingerprint identification system and a press detecting device, wherein the fingerprint identification system includes a screen and a fingerprint device, and the sensing area of the fingerprint device is at least partially located in a display area of the screen.
  • the press detecting device corresponds to the press detecting device 300 of the fingerprint recognition system provided by the embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 shown in FIG. 10 includes: a radio frequency (RF) circuit 410, a memory 420, other input devices 430, a display screen 440, a sensor 450, an audio circuit 460, an I/O subsystem 470, a processor 480, And components such as power supply 490.
  • RF radio frequency
  • the terminal device structure shown in FIG. 10 does not constitute a limitation on the terminal device, and may include more or less components than those illustrated, or combine some components or split some components. , or different parts layout.
  • the display screen 440 belongs to a User Interface (UI), and the terminal device 400 may include a user interface that is smaller than illustrated or less.
  • UI User Interface
  • terminal device 400 The components of the terminal device 400 will be specifically described below with reference to FIG. 10:
  • the RF circuit 410 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processor 480 processes the data. In addition, the uplink data is designed to be sent to the base station.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • LNA Low Noise Amplifier
  • RF circuitry 410 can also communicate with the network and other devices via wireless communication.
  • the memory 420 can be used to store software programs and modules, and the processor 480 executes various functional applications and data processing of the terminal device 400 by running software programs and modules stored in the memory 420.
  • the memory 420 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored. Data (such as audio data, phone book, etc.) created according to the use of the terminal device 400, and the like.
  • memory 420 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • Other input devices 430 can be used to receive input digital or character information, as well as to generate signal inputs related to user settings and function control of terminal device 400.
  • other input devices 430 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and light mice (the light mouse is not sensitive to display visual output)
  • function keys such as volume control buttons, switch buttons, etc.
  • trackballs mice, joysticks, and light mice (the light mouse is not sensitive to display visual output)
  • Other input devices 430 are coupled to other input device controllers 471 of I/O subsystem 470 for signal interaction with processor 480 under the control of other device input controllers 471.
  • the display screen 440 can be used to display information input by the user or information provided to the user as well as various menus of the terminal device 400, and can also accept user input.
  • the specific display screen 440 may be a touch screen, and may include a display panel 441 and a touch panel 442.
  • the touch panel 442 can cover the display panel 441, and the user can display the touch on the display panel 441 according to the content displayed by the display panel 441 (including, but not limited to, a soft keyboard, a virtual mouse, a virtual button, an icon, etc.) Operation is performed on or near the control panel 442, and after the touch panel 442 detects an operation thereon or nearby, it is transmitted to the processor 480 through the I/O subsystem 470 to determine user input, and then the processor 480 passes the I according to the user input.
  • the /O subsystem 470 provides a corresponding visual output on the display panel 441.
  • the touch panel 442 and the display panel 441 are used as two independent components to implement the input and input functions of the terminal device 400 in FIG. 8, in some embodiments, the touch panel 442 and the display panel 441 may be The input and output functions of the terminal device 400 are implemented integrated.
  • the terminal device 400 can also include at least one sensor 450.
  • the sensor 450 can be a fingerprint recognition sensor located under the display screen 440 or within the display screen 440, that is, the fingerprint device in the embodiment of the present application.
  • the audio circuit 460, the speaker 461, and the microphone 462 can provide an audio interface between the user and the terminal device 400.
  • the audio circuit 460 can transmit the converted audio data to the speaker 461 for conversion to the sound signal output by the speaker 461.
  • the microphone 462 converts the collected sound signal into a signal, which is received by the audio circuit 460.
  • the audio data is converted to audio data, which is then output to the RF circuit 410 for transmission to, for example, another mobile phone, or the audio data is output to the memory 420 for further processing.
  • the I/O subsystem 470 is used to control external devices for input and output, and may include other device input controllers 471, sensor controllers 472, and display controllers 473.
  • one or more other input control device controllers 471 receive signals from other input devices 430 and/or send signals to other input devices 430, and other input devices 430 may include physical buttons (press buttons, rocker buttons, etc.) , dial, slide switch, joystick, click wheel, light mouse (light mouse is a touch-sensitive surface that does not display visual output, or an extension of a touch-sensitive surface formed by the display). It is worth noting that other input control device controllers 471 can be connected to any one or more of the above devices.
  • Display controller 473 in I/O subsystem 470 receives signals from display 440 and/or transmits signals to display 440. After the display screen 440 detects the user input, the display controller 473 converts the detected user input into an interaction with the user interface object displayed on the display screen 440, ie, implements human-computer interaction. Sensor controller 472 can receive signals from one or more sensors 450 and/or send signals to one or more sensors 450.
  • the processor 480 is the control center of the terminal device 400, which connects various portions of the entire terminal device using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 420, and recalling stored in the memory 420.
  • the data performs various functions and processing data of the terminal device 400, thereby performing overall monitoring of the terminal device.
  • the processor 480 may include one or more processing units; preferably, the processor 480 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 480.
  • the processor 480 can be used to perform various steps in the method embodiments of the present application.
  • the terminal device 400 also includes a power source 490 (such as a battery) that supplies power to the various components.
  • a power source 490 such as a battery
  • the power source can be logically coupled to the processor 480 through a power management system to manage functions such as charging, discharging, and power consumption through the power management system.
  • the terminal device 400 may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the terminal device 400 may correspond to a terminal device in the press detecting method of the fingerprint identification and recognition system according to an embodiment of the present application, and the terminal device 400 may include a physical unit for performing the method performed by the terminal device in the above method. .
  • the physical units in the terminal device 400 and the other operations and/or functions described above are respectively used for the corresponding processes of the foregoing methods, and are not described herein again for brevity.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a central processing unit (CPU), the processor may be another general-purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (ASIC). ), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software in the decoding processor.
  • the software can be located in a random storage medium, such as a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • bus system may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • bus systems may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • various buses are labeled as bus systems in the figure.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the term "and/or” herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately while 10 is stored in A. And B, there are three cases of B alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method for transmitting an uplink signal disclosed in the embodiments of the present application may be directly implemented as hardware processor execution completion, or performed by hardware and software combination in the processor.
  • the software can be located in a random storage medium, such as a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the embodiment of the present application further provides a computer readable storage medium storing one or more programs, the one or more programs including instructions executed by a terminal device including a plurality of applications At this time, the terminal device can be caused to perform the method of the embodiment shown in FIG. 2.
  • circuits, branches, and units may be implemented in other manners.
  • the branch described above is schematic.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into A branch, or some features can be ignored, or not executed.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

L'invention concerne un procédé et un appareil de détection de pression d'un système de reconnaissance d'empreintes digitales, ainsi qu'un dispositif terminal. Le système de reconnaissance d'empreintes digitales comprend un écran et un appareil d'empreintes digitales. Une zone de détection de l'appareil d'empreinte digitale est au moins partiellement positionnée dans une zone d'affichage de l'écran. Le procédé consiste : à obtenir une zone de pression d'une opération de pression d'empreinte digitale sur l'écran (210) ; à déterminer une proportion de chevauchement de la zone de pression de l'opération de pression d'empreinte digitale et de la zone de détection de l'appareil d'empreinte digitale (220) ; et à déterminer la validité de l'opération de pression d'empreinte digitale en fonction de la proportion de chevauchement, la validité de l'opération de pression d'empreinte digitale comprenant une pression d'empreinte digitale valide ou une pression d'empreinte digitale invalide (230). Grâce au procédé, la pression d'empreinte digitale invalide provoquée par une pression incomplète dans le processus d'utilisation d'un utilisateur peut être filtrée à l'avance, de sorte que les problèmes selon lesquels un modèle d'empreinte digitale collecté par le système de reconnaissance d'empreinte digitale est incomplet ou une reconnaissance d'empreinte digitale échoue en raison d'une pression incomplète peuvent être évités.
PCT/CN2018/072670 2018-01-15 2018-01-15 Procédé et appareil de détection de pression d'un système de reconnaissance d'empreintes digitales et dispositif terminal WO2019136757A1 (fr)

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PCT/CN2018/072670 WO2019136757A1 (fr) 2018-01-15 2018-01-15 Procédé et appareil de détection de pression d'un système de reconnaissance d'empreintes digitales et dispositif terminal

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