WO2019136759A1 - 指纹识别系统的按压检测方法、装置和终端设备 - Google Patents

指纹识别系统的按压检测方法、装置和终端设备 Download PDF

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Publication number
WO2019136759A1
WO2019136759A1 PCT/CN2018/072673 CN2018072673W WO2019136759A1 WO 2019136759 A1 WO2019136759 A1 WO 2019136759A1 CN 2018072673 W CN2018072673 W CN 2018072673W WO 2019136759 A1 WO2019136759 A1 WO 2019136759A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
pressing
area
floating window
pressing operation
Prior art date
Application number
PCT/CN2018/072673
Other languages
English (en)
French (fr)
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.)
Filing date
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 PCT/CN2018/072673 priority Critical patent/WO2019136759A1/zh
Priority to CN201880000042.1A priority patent/CN108235750B/zh
Publication of WO2019136759A1 publication Critical patent/WO2019136759A1/zh

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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; detecting an effective pressing area of the fingerprint pressing operation, the effective pressing area is an area of the overlapping portion of the pressing area and the sensing area of the fingerprint device; determining the fingerprint pressing operation according to the effective pressing area Validity, the effectiveness of the fingerprint press operation includes a valid fingerprint press or an invalid fingerprint press.
  • the effective pressing area of the fingerprint pressing operation is obtained by comparing the pressing area of the fingerprint pressing operation of the user with the sensing area of the fingerprint device, and determining whether the fingerprint pressing operation is effective according to the magnitude relationship between the effective pressing area and the threshold value.
  • the fingerprint is pressed, 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, and It can have certain anti-missing and anti-counterfeiting functions.
  • 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 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 terminal device may first acquire the sensing area of the fingerprint device every time the fingerprint pressing operation occurs, and the terminal device may also acquire the sensing area of the fingerprint device only once, and store the information of the sensing area of the fingerprint device.
  • the sensing area can also be pre-stored in 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 pattern floating window is adjusted, including: moving the pattern floating window, so that the pattern floating window is complete. Covering the sensing area of the fingerprint device.
  • adjusting the pattern floating window includes: 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 the pressing area of the fingerprint pressing operation of the screen comprises: determining the position and size of the 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 determining the position and size of the pressing area of the fingerprint pressing operation according to the touch detection data reported by the screen.
  • the method includes: fitting a pressing area of the fingerprint pressing operation according to coordinates of the all contacts, and determining a position and a size of the pressing area of the fingerprint pressing operation.
  • the coordinates of all the contacts of the fingerprint pressing operation on the screen are acquired, and the pressing area is matched by the coordinates of all the contacts of the screen, and the pressing area is determined.
  • the position and size further report the position and size information of the pressing area to the processor.
  • the screen can also directly report the coordinates of all the contacts to the processor, and the coordinates of all the contacts of the processor are fitted to obtain the pressing area, and the position and size of the pressing area are determined.
  • determining the validity of the fingerprint pressing operation according to the effective pressing area including: if the effective pressing area is greater than or equal to the threshold, determining that the fingerprint pressing operation is a valid fingerprint pressing; The pressing area is less than the threshold, and the fingerprint pressing operation is determined to be an invalid fingerprint pressing.
  • the method further includes prompting the user to perform a fingerprint pressing operation again when determining that 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 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 third aspect provides a terminal device, including a memory, a processor, a touch screen, and a fingerprint module, wherein the memory is used to store a computer program, and the processor is configured to call and run the computer program from the memory, when the program is executed, the processing The method of the 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 a preview view and a pattern floating window.
  • Figure 4 shows another schematic block diagram of a preview view and a pattern floating window.
  • Fig. 5 shows a schematic block diagram of a pressing area pressed by a user.
  • Fig. 6 shows another schematic block diagram of a pressing area pressed by a user.
  • FIG. 7 is a schematic block diagram of a press detecting device of a fingerprint identification system of an embodiment of the present application.
  • FIG. 8 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 can 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 interior of 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 flow chart of a method for detecting a press of a fingerprint identification system according to an 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, according to the effective pressing area, the validity of the fingerprint pressing operation, where the validity of the fingerprint pressing operation includes a valid fingerprint pressing or an invalid fingerprint pressing; for example, when the effective pressing area is greater than or equal to a threshold, determining the The fingerprint pressing operation is an effective fingerprint pressing, otherwise, it is determined that the fingerprint pressing operation is 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 that is, the terminal device can acquire the position and size (such as the area) of the user's pressing area.
  • the terminal device can obtain the sensing area of the fingerprint device in advance, that is, the terminal device can obtain the location and size (such as the area) of the fingerprint device in advance, and the terminal device can press the pressed area of the obtained fingerprint pressing operation.
  • the sensing regions of the fingerprint device are compared, and the overlapping portions of the two regions can be further determined, and the area of the overlapping portion is determined as the effective pressing area of the fingerprint pressing operation.
  • the terminal device can compare the effective pressing area with the threshold to determine the validity of the fingerprint pressing operation, that is, whether the fingerprint pressing operation is a valid fingerprint pressing or an invalid fingerprint pressing. It should be understood that the threshold may be preset in the system 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 obtains the effective pressing area of the fingerprint pressing operation by comparing the pressing area of the fingerprint pressing operation of the user with the sensing area of the fingerprint device, and according to the effective pressing
  • the relationship between the area and the threshold determines whether the fingerprint pressing 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 fingerprint recognition system being collected due to the incomplete pressing.
  • the fingerprint template is incomplete or the fingerprint recognition fails. In addition, it can also have certain anti-missing and anti-counterfeiting functions.
  • 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 acquire information of the sensing area of the fingerprint device every time the fingerprint pressing operation is detected. Since the location and size of the sensing area of the fingerprint device are fixed for a certain terminal device, that is, the information of the sensing area is fixed, the terminal device can store the fingerprint device in its internal storage module at the time of shipment. The information of the sensing area, 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, and each time the fingerprint pressing operation is detected, the terminal device The internal storage module acquires information of the sensing area of the fingerprint device, and compares the pressing area of the fingerprint pressing operation with the sensing area of the fingerprint device to determine an effective pressing area of the fingerprint pressing operation. Alternatively, the terminal device may not store the information of the sensing area of the fingerprint device, but perform detection of the sensing area of the fingerprint device and detect the sensing of the fingerprint device in real time every time the fingerprint pressing operation is detected. Regional information.
  • 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. 3, 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 collected 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 4.
  • 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, for example, it may be a square as shown in FIG. 3, a rectangular shape, or a circular shape or an elliptical shape.
  • 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 initially generating the pattern floating window. If the sizes of the two are different, then the adjustment of the pattern floating window is required.
  • 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, and then only need to move when adjusting the pattern floating window.
  • the pattern floats the window to the sensing area of the fingerprint device.
  • the captured view of the fingerprint device displayed by the preview view may be an image that is equal to the image data acquired by the fingerprint device, or may be an image after zooming in or out.
  • 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 at 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, according to the touch detection data reported by the screen, the pressing area of the fingerprint pressing operation on the screen. Location and size.
  • the pressing area of the fingerprint pressing operation is generally circular or elliptical.
  • the touch sensor (such as a touch screen) of the screen can be detected.
  • the position and size of the pressing area of the fingerprint pressing operation Specifically, when the fingerprint pressing operation of the user is 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 the center point coordinate of the pressing area, the 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: The coordinates of all the contacts are fitted, and the position and size of the pressing area of the fingerprint pressing operation are determined.
  • 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 may be performed by a touch sensor of the screen, that is, when the touch sensor detects the fingerprint pressing operation of the user and After obtaining the fingerprint pressing operation on the coordinates of all the contacts of the screen, the coordinates of all the contacts can be directly fitted by the touch sensor, so that the pressing area of the fingerprint pressing operation can be determined; the touch sensor can also The coordinates of 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 user is determined by the processor.
  • FIG. 6 A schematic diagram of a pressing area specifically fitted by a processor or a touch sensor in this embodiment is shown in FIG. 6.
  • 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 effective pressing area including: if the effective pressing area is greater than or equal to the threshold, determining that the fingerprint pressing operation is an effective fingerprint pressing And if the effective pressing area is less than the threshold, determining that the fingerprint pressing operation is an invalid fingerprint pressing.
  • the method further includes: prompting the user to perform the fingerprint pressing operation again when determining that the fingerprint pressing operation is an invalid fingerprint pressing.
  • different vendors may use different interaction modes, for example, by prompting the user to perform fingerprint input again by displaying text on the screen, or by vibration feedback. The user is prompted to re-enter the fingerprint, such as shaking twice (generally shaking twice to indicate failure) or not making any feedback.
  • the terminal device can make the user clear that the current fingerprint pressing operation is effective by prompting the user to perform a fingerprint pressing operation when determining that the fingerprint pressing operation of the current user is an invalid fingerprint pressing. Sex, so you can quickly press the next press when necessary to improve the user experience.
  • the method further includes: controlling the fingerprint device to perform fingerprint image collection in a case where the fingerprint pressing operation is determined to be a valid 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. 7 shows 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
  • the detecting unit 320 is configured to detect an effective pressing area of the fingerprint pressing operation, where the effective pressing area is an area of an overlapping portion of the pressing area and the sensing area of the fingerprint device;
  • the determining unit 330 is configured to determine the validity of the fingerprint pressing operation according to the effective pressing area, 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 obtains the effective pressing area of the fingerprint pressing operation by comparing the pressing area of the fingerprint pressing operation of the user with the sensing area of the fingerprint device, and according to the effective pressing
  • the relationship between the area and the threshold determines whether the fingerprint pressing 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 fingerprint recognition system being collected due to the incomplete pressing.
  • the fingerprint template is incomplete or the fingerprint recognition fails. In addition, it can also have certain anti-missing and anti-counterfeiting functions.
  • 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 is completely covered to the sensing area of the fingerprint device.
  • the second acquiring unit operates the pattern floating window, including: moving the pattern floating window, and adjusting The pattern suspending window is sized 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: after detecting the pressing operation on the screen, determine, according to the touch detection data reported by the screen, a location of a pressing area of the fingerprint pressing operation and size.
  • 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 contacts of the fingerprint pressing operation on the screen
  • the first acquiring unit determines the fingerprint pressing operation according to the touch detection data reported by the screen.
  • the position and size of the pressing area include: fitting a pressing area of the fingerprint pressing operation according to coordinates of the all contacts, and determining a position and a size of the pressing area of the fingerprint pressing operation.
  • the determining unit is specifically configured to: if the effective pressing area is greater than or equal to the threshold, determine that the fingerprint pressing operation is a valid fingerprint pressing; if the effective pressing area is less than the threshold, determine the 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 again if the determining unit determines that the fingerprint pressing operation is an invalid fingerprint pressing.
  • a prompting unit configured to prompt the user to perform a fingerprint pressing operation again if the determining unit determines that 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 determining unit determines that the fingerprint pressing operation is an effective fingerprint pressing.
  • the embodiment of the present application further provides a fingerprint identification system, which may include the press detection device, the screen, and the fingerprint device of the fingerprint identification system in the various embodiments described above.
  • the fingerprint identification system may be a terminal device, including but not limited to a mobile phone, a computer, a multimedia machine, and a game machine.
  • 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. 6 is not repeated here for brevity.
  • FIG. 8 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. 8 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. 8 does not constitute a limitation on the terminal device, may include more or less components than 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 specific components of the terminal device 400 will be specifically described below with reference to FIG. 8:
  • 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) One or more of a surface, or an extension of a touch sensitive surface formed by a screen, or the like.
  • 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, which can be, for example, 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.
  • at least one sensor 450 can be, for example, 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 screen). 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 recognition system according to an embodiment of the present application, and the terminal device 400 may include a physical unit for performing a 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 by the 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 a combination of hardware and software in a 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 ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store a program code.

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Abstract

本申请实施例提供了一种指纹识别系统的按压检测方法、装置和终端设备，该指纹识别系统包括屏幕和指纹装置，该指纹装置的感应区域至少部分位于该屏幕的显示区域，该方法包括：获取在该屏幕的指纹按压操作的按压区域；检测该指纹按压操作的有效按压面积，该有效按压面积为该按压区域与该指纹装置的感应区域的重叠部分的面积；根据该有效按压面积，确定该指纹按压操作的有效性，该指纹按压操作的有效性包括有效指纹按压或无效指纹按压。本申请实施例的方法、装置和终端设备，可以提前过滤掉用户使用过程中由于按压不全引起的无效指纹按压，进而可以有效避免由于按压不全导致指纹识别系统采集到的指纹模板不完整或者出现指纹识别失败等问题。

Description

指纹识别系统的按压检测方法、装置和终端设备 技术领域
本申请涉及指纹识别领域，尤其涉及一种指纹识别系统的按压检测方法、装置和终端设备。
背景技术
对于目前采用屏下指纹识别系统的终端设备，指纹装置装配在屏幕的背面，在使用指纹识别功能时，屏幕在感知指纹感应区域的用户按压事件之后通知指纹装置采集指纹图像，并完成指纹的录入或识别操作。然而，当用户的按压区域偏离指纹装置的感应区域时，指纹装置采集到的指纹图像是不完整的，这种指纹图像如果被用户用于录入或识别，可能会导致操作失败，影响用户体验。
发明内容
有鉴于此，本申请实施例提供了一种指纹识别系统的按压检测方法、装置和终端设备，有利于提高用户体验。
第一方面，提供了一种指纹识别系统的按压检测方法，该指纹识别系统包括屏幕和指纹装置，该指纹装置的感应区域至少部分位于该屏幕的显示区域，该方法包括：获取在该屏幕的指纹按压操作的按压区域；检测该指纹按压操作的有效按压面积，该有效按压面积为该按压区域与该指纹装置的感应区域的重叠部分的面积；根据该有效按压面积，确定该指纹按压操作的有效性，该指纹按压操作的有效性包括有效指纹按压或无效指纹按压。
通过将用户的指纹按压操作的按压区域与指纹装置的感应区域进行比较，获取到该指纹按压操作的有效按压面积，并根据该有效按压面积与阈值的大小关系，确定该指纹按压操作是否为有效指纹按压，因此可以提前过滤掉用户使用过程中由于按压不全引起的无效指纹按压，进而可以有效避免由于按压不全导致指纹识别系统采集到的指纹模板不完整或者出现指纹识别失败等问题，另外，还可以具有一定的防误触以及防伪功能。
在一种可能的实现方式中，在获取该指纹按压操作的按压区域之前，该方法还包括：获取该指纹装置的感应区域的信息，该指纹装置的感应区域的 信息包括该指纹装置的感应区域的位置和大小信息。
在一种可能的实现方式中，该获取该指纹装置的感应区域的信息，包括：在该屏幕上显示预览视图，该预览视图为该指纹装置的采集视图；在该屏幕上提供一个可调整的图案悬浮窗；对该图案悬浮窗进行调整，以使该预览视图显示该图案悬浮窗的完整图案且该图案悬浮窗的图案铺满整个预览视图；获取该图案悬浮窗的位置和大小信息，并将该图案悬浮窗的位置和大小信息确定为该指纹装置的感应区域的信息。
可选地，终端设备可以在每一次发生指纹按压操作时，都先获取一下指纹装置的感应区域，终端设备也可以只获取一次该指纹装置的感应区域，并存储该指纹装置的感应区域的信息。该感应区域也可以预存在终端设备的存储模块中，也就是说终端设备出厂时其内部就存储有该指纹装置的感应区域的信息。
在一种可能的实现方式中，若该图案悬浮窗的大小与该指纹装置的感应区域的大小相同，该对该图案悬浮窗进行调整，包括：移动该图案悬浮窗，使得该图案悬浮窗完整覆盖该指纹装置的感应区域。
在一种可能的实现方式中，若该图案悬浮窗的大小与该指纹装置的感应区域的大小不同，该对该图案悬浮窗进行调整，包括：移动该图案悬浮窗，并调整该图案悬浮窗的大小，使得该图案悬浮窗与该感应区域的大小相同并完整覆盖该指纹装置的感应区域。
在一种可能的实现方式中，该获取在该屏幕的指纹按压操作的按压区域，包括：根据该屏幕上报的触摸检测数据，确定该指纹按压操作的按压区域的位置和大小。
在一种可能的实现方式中，若该按压区域的形状为椭圆形，该触摸检测数据包括该按压区域的中心点坐标，该按压区域的长轴方向，该按压区域的长轴值和该按压区域的短轴值；若该按压区域的形状为圆形，该触摸检测数据包括该按压区域的中心点坐标和该按压区域的半径。
在一种可能的实现方式中，该触摸检测数据包括该指纹按压操作在该屏幕上所有触点的坐标，该根据该屏幕上报的触摸检测数据，确定该指纹按压操作的按压区域的位置和大小，包括：根据该所有触点的坐标拟合出该指纹按压操作的按压区域，并确定该指纹按压操作的按压区域的位置和大小。
可选地，可以由屏幕检测到指纹按压操作之后，获取该指纹按压操作在 该屏幕的所有触点的坐标，并由屏幕对所有触点的坐标拟合得到按压区域，并确定该按压区域的位置和大小，进而向处理器上报该按压区域的位置和大小信息。该屏幕也可以直接将所有触点的坐标上报给处理器，由处理器对所有触点的坐标拟合得到按压区域，并确定该按压区域的位置和大小。
在一种可能的实现方式中，该根据该有效按压面积，确定该指纹按压操作的有效性，包括：若该有效按压面积大于或等于阈值，确定该指纹按压操作为有效指纹按压；若该有效按压面积小于该阈值，确定该指纹按压操作为无效指纹按压。
在一种可能的实现方式中，该方法还包括：在确定该指纹按压操作为无效指纹按压的情况下，提示用户重新进行指纹按压操作。
在一种可能的实现方式中，该方法还包括：在确定该指纹按压操作为有效指纹按压的情况下，控制该指纹装置进行指纹图像采集。
第二方面，提供一种指纹识别系统的按压检测装置，用于执行第一方面或第一方面任意可能的实现方式中的方法。具体地，该装置可以包括用于执行第一方面或第一方面任意可能的实现方式中的方法的单元。
第三方面，提供一种终端设备，包括存储器、处理器、触摸屏和指纹模组，该存储器用于存储计算机程序，处理器用于从存储器中调用并运行计算机程序，当程序被运行时，该处理器执行上述第一方面或第一方面任意可能的实现方式中的方法。
第四方面，提供一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第五方面，提供了一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任一可选的实现方式中的方法。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1示出了本申请实施例的应用场景的示意性框图。
图2示出了本申请实施例的指纹识别系统的按压检测方法的示意性框图。
图3示出了预览视图和图案悬浮窗的示意性框图。
图4示出了预览视图和图案悬浮窗的另一示意性框图。
图5示出了用户按压的按压区域的示意性框图。
图6示出了用户按压的按压区域的另一示意性框图。
图7示出了本申请实施例的指纹识别系统的按压检测装置的示意性框图。
图8示出了本申请实施例的终端设备的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
随着智能终端步入全面屏时代，屏幕正面指纹按键的空间受到挤压，因此，屏下(Under-display)或者屏内(In-display)指纹识别系统的方案就应运而生。所谓屏下或屏内指纹识别系统是指将指纹装置安装在屏幕下方或者集成到屏幕内部，从而实现在屏幕显示区域内部进行指纹识别操作。
作为一种常见的应用场景，本申请实施例涉及的指纹识别系统的按压检测方法可以应用在智能手机、平板电脑、多媒体设备、游戏机以及其他具有显示屏的移动终端或者其他终端设备；更具体地，在上述终端设备中，指纹识别系统可以具体为光学指纹系统、超声波指纹系统或者其他类型的指纹识别系统，其中，指纹装置可以设置在终端设备的显示屏下方的局部或全部区域，或者直接集成到终端设备的显示屏内部，从而形成屏下指纹识别系统或者屏内指纹识别系统。
为便利理解，以下以屏下指纹识别系统为例，介绍本申请实施例可以适用的终端设备的结构示意图。请参阅图1，所述终端设备100采用屏下光学指纹识别方案，具体地，所述终端设备100包括显示屏120和光学指纹装置130，其中，所述光学指纹装置130以贴合或者其他方式固定设置在所述显示屏120的下方。
所述显示屏120可以为自发光显示屏，其采用具有自发光显示单元的作为显示像素，比如有机发光二极管(Organic Light-Emitting Diode，OLED)显示屏或者微型发光二极管(Micro-LED)显示屏；或者，在其他替代实施例中，所述显示屏120也可以为液晶显示屏(Liquid Crystal Display,LCD) 或者其他被动发光显示屏，本申请对此不做限制。另一方面，所述显示屏120具体为触控显示屏，其不仅可以进行画面显示，还可以检测用户的触摸或者按压操作，从而为用户提供一个人机交互界面。比如，在一种实施例中，所述终端设备100可以包括触摸传感器，所述触摸传感器可以具体为触控面板(Touch Panel,TP)，其可以设置在所述显示屏120表面，也可以部分集成或者整体集成到所述显示屏120内部，从而形成所述触控显示屏。
所述光学指纹装置130主要用于采集用户的指纹图像，其可以至少设置在所述显示屏120下方的局部区域，从而使得所述光学指纹装置130的感应区域(或指纹有效检测区域)103至少部分位于所述显示屏120的显示区域102。
所述光学指纹装置130可以具体为光学指纹传感器，其包括具有多个光学感应单元的感应阵列，所述感应阵列所在区域为所述光学指纹装置130的指纹识别区域103。如图1所示，所述指纹识别区域103位于所述显示屏120的显示区域102之中，因此，用户在需要对所述终端设备进行解锁或者其他指纹验证的时候，只需要将手指按压在位于所述显示屏120的指纹识别区域103，便可以实现指纹输入。由于指纹检测可以在所述显示屏120的显示区域102内部实现，采用上述结构的终端设备100无需其正面专门预留空间来设置指纹按键(比如Home键)，因而可以采用全面屏方案，因此，所述显示屏120的显示区域102可以基本扩展到所述终端设备100的整个正面。
虽然图1所示的实施例以屏下光学指纹系统为例，应当理解，在其他实施例中，所述终端设备100的指纹识别系统也可以采用超声波或者其他类型的指纹识别系统，相对应地，所述光学指纹传感器可以采用超声波指纹传感器或者其他类型的指纹传感器代替；另外，在其他替代实施例中，所述指纹传感器也可以集成到所述显示屏120内部，或者设置在所述终端设备100内部的任意区域(比如边缘区域)并通过光路或者其他信号的导引结构来将指纹检测信号导引至所述指纹传感器。本申请对指纹传感器的类型和具体结构不作特殊限制，只要上述指纹传感器可以满足在终端设备的显示屏内部进行指纹识别的性能要求便可。
本实施例以所述显示屏120采用OLED显示屏为例，其具有呈阵列式排布的OLED显示单元阵列，所述光学指纹装置130可以利用所述OLED显示屏120位于所述指纹识别区域103的OLED显示单元(即OLED光源) 来作为光学指纹检测的激励光源。并且，所述光学指纹装置130的感应阵列具体为光探测器(Photo detector)阵列，其包括多个呈阵列式分布的光探测器，所述光探测器可以作为如上所述的光学感应单元。当手指触摸、按压或者接近(为便于描述，本申请统称为按压)在所述指纹识别区域103时，所述指纹识别区域103的显示单元发出的光线在手指表面的指纹发生反射并形成反射光，其中所述手指指纹的纹脊和纹谷的反射光是不同的，反射光从所述显示屏120并被所述光探测器阵列所接收并转换为相应的电信号，即指纹检测信号。基于所述指纹检测信号便可以获得指纹图像数据，并且可以进一步进行指纹匹配验证，从而在所述终端设备100实现光学指纹识别功能。
在其他替代实施例中，所述光学指纹装置130也可以设置在所述显示屏120下方的整个区域，从而将所述指纹识别区域103扩展到整个所述显示屏120的整个显示区域102，实现全屏指纹检测。
应当理解的是，在具体实现上，所述终端设备100还包括透明保护盖板110，所述盖板110可以具体为透明盖板，比如玻璃盖板或者蓝宝石盖板，其位于所述显示屏120的上方并覆盖所述终端设备100的正面。因此，本申请实施例中，所谓的手指按压所述显示屏120可以实际上是指手指按压在所述显示屏120上方的盖板110或者覆盖所述盖板110的保护层表面。
作为一种可选的实现方式，如图1所示，所述光学指纹装置130可以包括光学组件132和光学检测单元134；所述光学组件132可以包括光路调制器和滤光层，其中所述光路调制器可以包括通孔阵列，所述滤光层可以设置在所述光路调制器的下方。所述显示屏120发出的光线在该显示屏120上方的待检测手指表面发生反射，该光路调制器通过其通孔阵列对从手指表面反射回来的反射光进行准直和调制，并将反射光导引至滤光层，该反射光经过滤光层的滤波后被所述光学检测单元134接收，所述光学检测单元134可以进一步对接收到的该反射光进行检测，以实现指纹识别。应当理解，上述光学指纹装置130仅是一种示例性的结构，在具体实现上，该光学组件132的滤光层的位置并不局限在所述光路调制器的下方；比如，在一种替代实施例中，该滤光层也可以设置在所述光路调制器和所述显示屏120之间，即位于所述光路调制器上方；或者，所述光学组件132可以包括两层滤光层，二者分别设置在所述光路调制器的上方和下方。在其他替代实施例中，该滤光层也可以集成到所述光路调制器内部，甚至也可以省略掉，本申请对此不做限 制。
在具体实现上，所述光学组件132可以与所述光学检测单元134封装在同一个光学指纹芯片，也可以是作为与光学检测单元134相对独立的部件安装在光学指纹装置内部。其中，该光路调制器可以具体为在半导体硅片或者硅氧化物或氮化物制作而成的准直器(Collimator)层或者透镜(Lens)层，其具有多个准直单元或者透镜单元，所述准直单元或者透镜单元可以作为所述光路调制器的调制单元，具体地，所述调制单元可以具体为具有高深宽比的通孔，因此所述多个准直单元或者透镜单元可以构成所述光路调制器的上述通孔阵列。在从手指反射回来的反射光中，入射到所述调制单元的光线可以穿过并被其下方的光学感应单元接收，每一个光学感应单元基本上能够接收到其上方的通孔导引过来的指纹纹路的反射光，从而所述感应阵列便可以检测出手指的指纹图像。
在所述光学指纹装置130中，光路调制器的每一个调制单元可以分别对应所述感应阵列的其中一个光学感应单元；可替代地，所述调制单元跟所述感应阵列的光学感应单元之间也可以采用非一一对应的关系来降低产生莫尔条纹干扰，比如一个光学感应单元可以对应于多个调制单元，或者，所述调制单元也可以采用不规则排列的方式来实现跟所述感应阵列的光学感应单元之间不具有特定的对应关系。当所述光路调制器的调制单元采用不规则排列方式时，所述光学指纹装置130可以通过后期软件算法来对每一个感应单元检测到的反射光线进行校正。
应当理解，虽然上述屏下指纹识别方案使得在所述终端设备100实现在所述显示屏120内部进行指纹识别功能成为可能，但在某些应用场景下，所述指纹装置130可能仅仅是设置在所述显示屏120的局部区域，或者说所述指纹装置130的感应区域103仅仅覆盖所述显示屏120的局部显示区域。在这种情况下，所述终端设备100的用户本身并无法感知在所述显示屏120的指纹检测有效范围。在用户需要在所述终端设备100使用指纹识别功能时，所述显示屏120在用户进行指纹按压操作时通过其触控检测功能感知用户按压事件，然后通过操作系统通知指纹装置130采集指纹图像，并进一步完成用户指纹的录入或识别操作。当用户在所述显示屏120的指纹按压操作的按压区域偏离所述指纹装置130的感应区域103时，比如所述按压区域与所述感应区域103的重叠面积较小时，所述指纹装置采集到的指纹图像是不完整 的，或者说所述指纹装置130无法正常采集到用户的指纹图像。上述不完整指纹图像如果被用户用于录入或识别，可能会导致操作失败，影响用户体验。因此，作为一种解决方案，本申请实施例首先提供一种指纹识别系统的按压检测方法，在指纹装置采集指纹图像之前，判断当前用户的指纹按压操作是否是有效指纹按压。
图2示出了本申请实施例的指纹识别系统的按压检测方法200的流程示意图。如图2所示，该方法可以由终端设备执行，例如可以由终端设备中的处理器执行，该终端设备可以采用如图1所示的结构，即包括位于屏幕(比如上述显示屏120)下方的指纹装置(比如上述光学指纹装置130)，可替代地，该终端设备也可以采用其他结构的屏下或者屏内指纹识别系统。具体地，该方法200包括以下部分或全部内容：
S210，获取在屏幕的指纹按压操作的按压区域。
S220，检测所述指纹按压操作的有效按压面积，所述有效按压面积为所述按压区域与指纹装置的感应区域的重叠部分的面积。
S230，根据该有效按压面积，确定该指纹按压操作的有效性，该指纹按压操作的有效性包括有效指纹按压或无效指纹按压；比如，当所述有效按压面积大于或等于阈值时，确定所述指纹按压操作为有效指纹按压，否则，确定所述指纹按压操作为无效指纹按压。
具体而言，当用户需要进行指纹录入或识别时，用户可以在终端设备的屏幕进行指纹按压操作，当屏幕检测到用户的指纹按压操作时，终端设备可以获取用户在屏幕的指纹按压操作的按压区域，也就是说，终端设备可以获取到用户的按压区域的位置和大小(比如面积)。另一方面，终端设备可以提前获取到指纹装置的感应区域，即终端设备可以提前获取到指纹装置所在的位置和大小(比如面积)，进而终端设备可以将获取到的指纹按压操作的按压区域和指纹装置的感应区域进行比较，进一步地可以确定两个区域的重叠部分，并将该重叠部分的面积确定为该指纹按压操作的有效按压面积。终端设备可以将该有效按压面积与阈值进行比较，来判断该指纹按压操作的有效性，也就是说判断该指纹按压操作是有效指纹按压还是无效指纹按压。应理解，该阈值可以在系统内部预先设置或者根据用户体验来设置。
因此，本申请实施例的指纹识别系统的按压检测方法，通过将用户的指纹按压操作的按压区域与指纹装置的感应区域进行比较，获取到该指纹按压 操作的有效按压面积，并根据该有效按压面积与阈值的大小关系，确定该指纹按压操作是否为有效指纹按压，因此可以提前过滤掉用户使用过程中由于按压不全引起的无效指纹按压，进而可以有效避免由于按压不全导致指纹识别系统采集到的指纹模板不完整或者出现指纹识别失败等问题，另外，还可以具有一定的防误触以及防伪功能。
可选地，在本申请实施例中，在获取该指纹按压操作的按压区域之前，该方法还包括：获取该指纹装置的感应区域的信息，该感应区域的信息包括该感应区域的位置和大小。
终端设备可以在每一次检测到指纹按压操作时，都获取该指纹装置的感应区域的信息。由于对于某个终端设备而言，该指纹装置的感应区域的位置和大小的固定的，即该感应区域的信息是固定的，终端设备可以在出厂时其内部的存储模块就存储有该指纹装置的感应区域的信息，或者终端设备也可以预先检测该指纹装置的感应区域的信息，并通过其内部的存储模块存储该感应区域的信息，在每一次检测到指纹按压操作时，终端设备从其内部的存储模块获取该指纹装置的感应区域的信息，并将该指纹按压操作的按压区域与该指纹装置的感应区域进行比较，从而确定该指纹按压操作的有效按压面积。可替代地，该终端设备也可以不存储该指纹装置的感应区域的信息，而是在每一次检测到指纹按压操作时都进行该指纹装置的感应区域的检测并实时获取到该指纹装置的感应区域的信息。
可选地，在本申请实施例中，该指纹装置的感应区域的信息可以通过软件检测的方式来进行获取，比如，该指纹装置的感应区域的信息获取可以包括：
在屏幕显示预览视图，该预览视图为该指纹装置的采集视图；
在屏幕提供一个可调整的图案悬浮窗；
对该图案悬浮窗进行调整，以使该预览视图显示该图案悬浮窗的完整图案且该图案悬浮窗的图案铺满整个预览视图；
获取该图案悬浮窗的位置和大小信息，并将其确定为该指纹装置的感应区域的信息。
具体地，终端设备可以结合预览视图和图案悬浮窗来获取该指纹装置的感应区域的信息。如图3所示，终端设备可以首先在屏幕生成一个预览视图，并且，终端设备的显示驱动模块可以驱动该屏幕在该预览视图实时显示该指 纹装置的采集视图，即显示该指纹装置采集到的图像数据所对应的图像。
该终端设备还可以在该屏幕生成一个图案悬浮窗，该图案悬浮窗的位置和大小是可调整的，比如，该图案悬浮窗可以修改位置和大小，且支持任意拖动。优选地，该终端设备还可以在屏幕的预定区域实时显示该图案悬浮窗的位置及大小信息，其中，该图案悬浮窗的位置可以用该图案悬浮窗的当前所在位置的中心坐标表示，该图案悬浮窗的大小可以用该图案悬浮窗的宽度和高度表示(若该图案悬浮窗为正方形，则其大小可以用边长来表示)。例如，在图3所示的实施例中，该图案悬浮窗的形状为正方形，其中心坐标为[400，400]，边长为200。
该图案悬浮窗需要有一定的图案，以使得当该图案悬浮窗移动到该指纹装置的感应区域时，该图案悬浮窗的图案能够在该预览视图中显示出来。另一方面，该终端设备可以调整该图案悬浮窗的位置，比如移动该图案悬浮窗，作为一种实施例，用户可以通过该屏幕提供的人机交互界面来拖动该图案悬浮窗，该终端设备根据用户的拖动操作对该图案悬浮窗的位置进行控制，并且该终端设备还可以修改该图案悬浮窗的大小，最终使得该预览视图可以显示该图案悬浮窗的完整图案，并保证图案悬浮窗的图案是铺满整个预览视图，如图4所示。此时，该图案悬浮窗完全覆盖该指纹装置的感应区域，因此该图案悬浮窗的位置和大小便代表着该指纹装置的感应区域的位置和大小，那么，该终端设备的屏幕显示的该图案悬浮窗的中心点坐标[300，550]和边长(90)就是该指纹装置的感应区域的中心点坐标和边长。因此，该终端设备可以获取该图案悬浮窗的位置和大小信息，并将其确定为该指纹装置的感应区域的信息。
可选地，在本申请实施例中，如果该图案悬浮窗的大小与该指纹装置的感应区域的大小相同，对该图案悬浮窗进行调整具体包括：移动该图案悬浮窗，使得该图案悬浮窗完整覆盖该指纹装置的感应区域。
可选地，在本申请实施例中，如果该图案悬浮窗的大小与该指纹装置的感应区域的大小不同，对该图案悬浮窗进行调整具体包括：移动该图案悬浮窗，并调整该图案悬浮窗的大小，使得该图案悬浮窗与该感应区域的大小相同并完整覆盖该感应区域。
应理解，该图案悬浮窗的形状可以不受限定，比如其可以是如图3所示的正方形，也可以是长方形，或者也可以是圆形或者椭圆形。作为一种优选 的实施例，该图案悬浮窗的形状与该指纹装置的感应区域的形状相同。当该图案悬浮窗完整覆盖该指纹装置的感应区域时，该图案悬浮窗的大小应该与该感应区域的大小相同。该终端设备可以在初始生成图案悬浮窗时就将图案悬浮窗的形状设置成与该指纹装置的感应区域的形状相同，如果二者大小不同，那么在对该图案悬浮窗进行调整时，既需要移动该图案悬浮窗到该指纹装置的感应区域，也需要修改该图案悬浮窗的大小。该终端设备也可以在初始生成图案悬浮窗时将该图案悬浮窗的形状和大小设置成与该指纹装置的感应区域的形状和大小相同，那么在对该图案悬浮窗进行调整时，只需要移动该图案悬浮窗到该指纹装置的感应区域即可。
可替代地，该预览视图显示的该指纹装置的采集视图可以是与该指纹装置采集的图像数据相对应的图像是等比例的，也可以是放大或缩小之后的图像。本申请实施例对预览视图的大小不作限定。
应理解，当用户在该屏幕上进行指纹按压操作时，该预览视图和该图案悬浮窗可以处于去激活状态，也就是说该预览视图和该图案悬浮窗可以只在该终端设备获取该指纹装置的感应区域的信息时才会激活。
可选地，在本申请实施例中，该获取在屏幕的指纹按压操作的按压区域的步骤，可以具体包括：根据该屏幕上报的触摸检测数据，确定该指纹按压操作在屏幕上的按压区域的位置和大小。
由于人体手指的特性，用户在屏幕进行指纹按压操作时，该指纹按压操作的按压区域通常为圆形或者椭圆形，在本申请实施例中，可以通过该屏幕的触摸传感器(比如触摸屏)来检测该指纹按压操作的按压区域的位置和大小。具体地，当检测到用户的指纹按压操作时，触摸传感器可以将按压区域的触摸检测数据上报给该终端设备的处理器，该处理器可以根据该按压区域的触摸检测数据确定出该指纹按压操作的按压区域的位置和大小。
如图5所示，假设用户的指纹按压操作的按压区域为椭圆形，触摸传感器向处理器上报的触摸检测数据可以包括该按压区域的中心点坐标，该按压区域的长轴方向，该按压区域的长轴值和该按压区域的短轴值。在其他替代实施例中，如果该按压区域的形状为圆形，该触摸传感器向该处理器上报的触摸检测数据可以包括该按压区域的中心点坐标和该按压区域的半径。
可选地，作为一种替代的实施例，该触摸检测数据可以包括该指纹按压操作在该屏幕上所有触点的坐标，该获取在屏幕的指纹按压操作的按压区域 的步骤，可以具体包括：对该所有触点的坐标进行拟合，并确定出该指纹按压操作的按压区域的位置和大小。
应理解，本申请实施例的获取指纹按压操作的按压区域的方法可以由终端设备的处理器执行，也可以由屏幕的触摸传感器执行，也就是说，当触摸传感器检测到用户的指纹按压操作并获取到该指纹按压操作在该屏幕的所有触点的坐标之后，可以由该触摸传感器直接将所有触点的坐标进行拟合，从而可以确定该指纹按压操作的按压区域；触摸传感器也可以将所有触点的坐标向处理器上报，由处理器对所有触点的坐标进行拟合，从而由处理器确定出该用户的按压区域。本实施例通过处理器或者触摸传感器具体拟合出来的按压区域的示意图如图6所示。
还应理解，本申请实施例的指纹识别系统的按压检测方法中的各个步骤既可以由终端设备的处理器执行，也可以由屏幕的触摸传感器执行，也可以是处理器与屏幕的触摸传感器结合执行，本申请实施例对此不构成限定。
可选地，在本申请实施例中，根据该有效按压面积，确定该指纹按压操作的有效性，包括：若该有效按压面积大于或等于该阈值，确定该所述指纹按压操作为有效指纹按压；若该有效按压面积小于该阈值，确定所述指纹按压操作为无效指纹按压。
可选地，在本申请实施例中，该方法还包括：在确定该指纹按压操作为无效指纹按压的情况下，提示用户重新进行指纹按压操作。
在实际应用中，当终端设备确定该指纹按压操作为无效指纹按压时，不同的厂商可能会使用不同的交互方式，比如可以通过在该屏幕显示文字直接提示用户重新进行指纹输入，或者通过震动反馈提示用户重新进行指纹输入，比如震动两次(一般震动两次表示失败)，或者也不做任何反馈。
在本申请实施例提供的指纹识别系统的按压检测方法中，终端设备在确定当前用户的指纹按压操作为无效指纹按压时通过向用户提示重新进行指纹按压操作，可以使用户明确当前指纹按压操作有效性，从而可以在必要时快速进行下一次按压，提高用户体验。
可选地，在本申请实施例中，该方法还包括：在确定该指纹按压操作为有效指纹按压的情况下，控制该指纹装置进行指纹图像采集。
在本申请实施例提供的指纹识别系统的按压检测方法中，用户在使用指纹识别功能时，终端设备的屏幕通过其触控检测功能感知指纹装置的感应区 域的用户按压事件，即检测到用户在屏幕的指纹按压操作，首先通过判断该指纹按压操作是否为有效指纹按压，如果是有效指纹按压，才触发指纹装置进行指纹图像采集，进而可以完成指纹的录入或识别操作。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
尽管已对本申请及其优点做了详细说明，但应理解，在不脱离如所附权利要求书所界定的本申请的精神和范围的情况下，可以对本申请进行各种变化、替代和更改。
图7示出了本申请实施例的指纹识别系统的按压检测装置300的示意性框图。该指纹识别系统包括屏幕和指纹装置，该指纹装置的感应区域至少部分位于该屏幕的显示区域，如图7所示，该装置300包括：
第一获取单元310，用于获取在该屏幕的指纹按压操作的按压区域；
检测单元320，用于检测该指纹按压操作的有效按压面积，该有效按压面积为该按压区域与该指纹装置的感应区域的重叠部分的面积；
确定单元330，用于根据该有效按压面积，确定该指纹按压操作的有效性，该指纹按压操作的有效性包括有效指纹按压或无效指纹按压。
因此，本申请实施例的指纹识别系统的按压检测装置，通过将用户的指纹按压操作的按压区域与指纹装置的感应区域进行比较，获取到该指纹按压操作的有效按压面积，并根据该有效按压面积与阈值的大小关系，确定该指纹按压操作是否为有效指纹按压，因此可以提前过滤掉用户使用过程中由于按压不全引起的无效指纹按压，进而可以有效避免由于按压不全导致指纹识别系统采集到的指纹模板不完整或者出现指纹识别失败等问题，另外，还可以具有一定的防误触以及防伪功能。
可选地，在本申请实施例中，该装置还包括：第二获取单元，用于在该第一获取单元获取该指纹按压操作的按压区域之前，获取该指纹装置的感应区域的信息，该指纹装置的感应区域的信息包括该指纹装置的感应区域的位置和大小信息。
可选地，在本申请实施例中，该第二获取单元具体用于：在该屏幕上显示预览视图，该预览视图为该指纹装置的采集视图；在该屏幕上提供一个可调整的图案悬浮窗；对该图案悬浮窗进行调整，以使该预览视图显示该图案 悬浮窗的完整图案且该图案悬浮窗的图案铺满整个预览视图；获取该图案悬浮窗的位置和大小信息，并将该图案悬浮窗的位置和大小信息确定为该指纹装置的感应区域的信息。
可选地，在本申请实施例中，若该图案悬浮窗的大小与该指纹装置的感应区域的大小相同，该第二获取单元对该图案悬浮窗进行调整，包括：移动该图案悬浮窗，使得该图案悬浮窗完整覆盖该指纹装置的感应区域。
可选地，在本申请实施例中，若该图案悬浮窗的大小与该指纹装置的感应区域的大小不同，该第二获取单元操作该图案悬浮窗，包括：移动该图案悬浮窗，并调整该图案悬浮窗的大小，使得该图案悬浮窗与该感应区域的大小相同并完整覆盖该指纹装置的感应区域。
可选地，在本申请实施例中，该第一获取单元具体用于：在该屏幕检测到该按压操作后，根据该屏幕上报的触摸检测数据，确定该指纹按压操作的按压区域的位置和大小。
可选地，在本申请实施例中，若该按压区域的形状为椭圆形，该触摸检测数据包括该按压区域的中心点坐标，该按压区域的长轴方向，该按压区域的长轴值和该按压区域的短轴值；若该按压区域的形状为圆形，该触摸检测数据包括该按压区域的中心点坐标和该按压区域的半径。
可选地，在本申请实施例中，该触摸检测数据包括该指纹按压操作在该屏幕上所有触点的坐标，该第一获取单元根据该屏幕上报的触摸检测数据，确定该指纹按压操作的按压区域的位置和大小，包括：根据该所有触点的坐标拟合出该指纹按压操作的按压区域，并确定该指纹按压操作的按压区域的位置和大小。
可选地，在本申请实施例中，该确定单元具体用于：若该有效按压面积大于或等于该阈值，确定该指纹按压操作为有效指纹按压；若该有效按压面积小于该阈值，确定该指纹按压操作为无效指纹按压。
可选地，在本申请实施例中，该装置还包括：提示单元，用于在该确定单元确定该指纹按压操作为无效指纹按压的情况下，提示用户重新进行指纹按压操作。
可选地，在本申请实施例中，该装置还包括：控制单元，用于在该确定单元确定该指纹按压操作为有效指纹按压的情况下，控制该指纹装置进行指纹图像采集。
可选地，本申请实施例还提供了一种指纹识别系统，该指纹识别系统可以包括上述各种实施例中的指纹识别系统的按压检测装置、屏幕和指纹装置。
可选地，该指纹识别系统可以是终端设备，包括但不限于手机、电脑、多媒体机和游戏机。
根据本申请实施例的指纹识别系统的按压检测装置300可对应于本申请方法实施例中的执行主体，并且装置300中的各个单元的上述和其它操作和/或功能分别为了实现图2至图6中方法200的相应流程，为了简洁，在此不再赘述。
图8是根据本申请实施例提供的终端设备400的示意性框图。图8所示的终端设备400包括：射频(Radio Frequency，RF)电路410、存储器420、其他输入设备430、显示屏440、传感器450、音频电路460、I/O子系统470、处理器480、以及电源490等部件。本领域技术人员可以理解，图8中示出的终端设备结构并不构成对终端设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。本领领域技术人员可以理解显示屏440属于用户界面(User Interface，UI)，且终端设备400可以包括比图示或者更少的用户界面。
下面结合图8对终端设备400的各个构成部件进行具体的介绍：
RF电路410可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器480处理；另外，将设计上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路410还可以通过无线通信与网络和其他设备通信。
存储器420可用于存储软件程序以及模块，处理器480通过运行存储在存储器420的软件程序以及模块，从而执行终端设备400的各种功能应用以及数据处理。存储器420可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图象播放功能等)等；存储数据区可存储根据终端设备400的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器420可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
其他输入设备430可用于接收输入的数字或字符信息，以及产生与终端设备400的用户设置以及功能控制有关的信号输入。具体地，其他输入设备430可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、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由屏幕形成的触摸敏感表面的延伸)等中的一种或多种。其他输入设备430与I/O子系统470的其他输入设备控制器471相连接，在其他设备输入控制器471的控制下与处理器480进行信号交互。
显示屏440可用于显示由用户输入的信息或提供给用户的信息以及终端设备400的各种菜单，还可以接受用户输入。具体的显示屏440可以是触控屏，可包括显示面板441，以及触控面板442。触控面板442可覆盖显示面板441，用户可以根据显示面板441显示的内容(该显示内容包括但不限于，软键盘、虚拟鼠标、虚拟按键、图标等等)，在显示面板441上覆盖的触控面板442上或者附近进行操作，触控面板442检测到在其上或附近的操作后，通过I/O子系统470传送给处理器480以确定用户输入，随后处理器480根据用户输入通过I/O子系统470在显示面板441上提供相应的视觉输出。虽然在图8中，触控面板442与显示面板441是作为两个独立的部件来实现终端设备400的输入和输入功能，但是在某些实施例中，可以将触控面板442与显示面板441集成而实现终端设备400的输入和输出功能。
终端设备400还可包括至少一种传感器450，例如，该传感器450可以是位于显示屏440下或显示屏440内的指纹识别传感器，也就是本申请实施例中的指纹装置。
音频电路460、扬声器461，麦克风462可提供用户与终端设备400之间的音频接口。音频电路460可将接收到的音频数据转换后的信号，传输到扬声器461，由扬声器461转换为声音信号输出；另一方面，麦克风462将收集的声音信号转换为信号，由音频电路460接收后转换为音频数据，再将音频数据输出至RF电路410以发送给比如另一手机，或者将音频数据输出至存储器420以便进一步处理。
I/O子系统470用来控制输入输出的外部设备，可以包括其他设备输入控制器471、传感器控制器472、显示控制器473。可选的，一个或多个其他输入控制设备控制器471从其他输入设备430接收信号和/或者向其他输入设备430发送信号，其他输入设备430可以包括物理按钮(按压按钮、摇臂按 钮等)、拨号盘、滑动开关、操纵杆、点击滚轮、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由屏幕形成的触摸敏感表面的延伸)。值得说明的是，其他输入控制设备控制器471可以与任一个或者多个上述设备连接。所述I/O子系统470中的显示控制器473从显示屏440接收信号和/或者向显示屏440发送信号。显示屏440检测到用户输入后，显示控制器473将检测到的用户输入转换为与显示在显示屏440上的用户界面对象的交互，即实现人机交互。传感器控制器472可以从一个或者多个传感器450接收信号和/或者向一个或者多个传感器450发送信号。
处理器480是终端设备400的控制中心，利用各种接口和线路连接整个终端设备的各个部分，通过运行或执行存储在存储器420内的软件程序和/或模块，以及调用存储在存储器420内的数据，执行终端设备400的各种功能和处理数据，从而对终端设备进行整体监控。可选的，处理器480可包括一个或多个处理单元；优选的，处理器480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480中。该处理器480可以用来执行本申请方法实施例中的各个步骤。
终端设备400还包括给各个部件供电的电源490(比如电池)，优选的，电源可以通过电源管理系统与处理器480逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗等功能。
尽管未示出，终端设备400还可以包括摄像头、蓝牙模块等，在此不再赘述。
应理解，该终端设备400可对应于根据本申请实施例的指纹识别系统的按压检测方法中的终端设备，该终端设备400可以包括用于执行上述方法中的终端设备执行的方法的实体单元。并且，该终端设备400中的各实体单元和上述其他操作和/或功能分别为了上述方法的相应流程，为了简洁，在此不再赘述。
还应理解，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是中央处理单元(Central Processing Unit，CPU)、该处理器还可以是其他通用处理 器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件器组合执行完成。软件器可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
还应理解，该总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统。
还应理解，在本申请实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确 定B，还可以根据A和/或其它信息确定B。应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存10在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的用于传输上行信号的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件器组合执行完成。软件器可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
本申请实施例还提出了一种计算机可读存储介质，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的终端设备执行时，能够使该终端设备执行图2所示实施例的方法。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及电路，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的电路、支路和单元，可以通过其它的方式实现。例如，以上所描述的支路是示意性的，例如，该单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到一个支路，或一些特征可以忽略，或不执行。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等 各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以该权利要求的保护范围为准。

Claims (23)

  1. 一种指纹识别系统的按压检测方法，其特征在于，所述指纹识别系统包括屏幕和指纹装置，所述指纹装置的感应区域至少部分位于所述屏幕的显示区域，所述方法包括：
    获取在所述屏幕的指纹按压操作的按压区域；
    检测所述指纹按压操作的有效按压面积，所述有效按压面积为所述按压区域与所述指纹装置的感应区域的重叠部分的面积；
    根据所述有效按压面积，确定所述指纹按压操作的有效性，所述指纹按压操作的有效性包括有效指纹按压或无效指纹按压。
  2. 根据权利要求1所述的方法，其特征在于，在获取所述指纹按压操作的按压区域之前，所述方法还包括：
    获取所述指纹装置的感应区域的信息，所述指纹装置的感应区域的信息包括所述指纹装置的感应区域的位置和大小信息。
  3. 根据权利要求2所述的方法，其特征在于，所述获取所述指纹装置的感应区域的信息，包括：
    在所述屏幕上显示预览视图，所述预览视图为所述指纹装置的采集视图；
    在所述屏幕上提供一个可调整的图案悬浮窗；
    对所述图案悬浮窗进行调整，以使所述预览视图显示所述图案悬浮窗的完整图案且所述图案悬浮窗的图案铺满整个预览视图；
    获取所述图案悬浮窗的位置和大小信息，并将所述图案悬浮窗的位置和大小信息确定为所述指纹装置的感应区域的信息。
  4. 根据权利要求3所述的方法，其特征在于，若所述图案悬浮窗的大小与所述指纹装置的感应区域的大小相同，所述对所述图案悬浮窗进行调整，包括：
    移动所述图案悬浮窗，使得所述图案悬浮窗完整覆盖所述指纹装置的感应区域。
  5. 根据权利要求3所述的方法，其特征在于，若所述图案悬浮窗的大小与所述指纹装置的感应区域的大小不同，所述对所述图案悬浮窗进行调整，包括：
    移动所述图案悬浮窗，并调整所述图案悬浮窗的大小，使得所述图案悬 浮窗与所述感应区域的大小相同并完整覆盖所述指纹装置的感应区域。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述获取在所述屏幕的指纹按压操作的按压区域，包括：
    根据所述屏幕上报的触摸检测数据，确定所述指纹按压操作的按压区域的位置和大小。
  7. 根据权利要求6所述的方法，其特征在于，若所述按压区域的形状为椭圆形，所述触摸检测数据包括所述按压区域的中心点坐标，所述按压区域的长轴方向，所述按压区域的长轴值和所述按压区域的短轴值；若所述按压区域的形状为圆形，所述触摸检测数据包括所述按压区域的中心点坐标和所述按压区域的半径。
  8. 根据权利要求6所述的方法，其特征在于，所述触摸检测数据包括所述指纹按压操作在所述屏幕上所有触点的坐标，所述根据所述屏幕上报的触摸检测数据，确定所述指纹按压操作的按压区域的位置和大小，包括：
    根据所述所有触点的坐标拟合出所述指纹按压操作的按压区域，并确定所述指纹按压操作的按压区域的位置和大小。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述根据所述有效按压面积，确定所述指纹按压操作的有效性，包括：
    若所述有效按压面积大于或等于阈值，确定所述指纹按压操作为有效指纹按压；
    若所述有效按压面积小于所述阈值，确定所述指纹按压操作为无效指纹按压。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述方法还包括：
    在确定所述指纹按压操作为无效指纹按压的情况下，提示用户重新进行指纹按压操作。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述方法还包括：
    在确定所述指纹按压操作为有效指纹按压的情况下，控制所述指纹装置进行指纹图像采集。
  12. 一种指纹识别系统的按压检测装置，其特征在于，所述指纹识别系统包括屏幕和指纹装置，所述指纹装置的感应区域至少部分位于所述屏幕的 显示区域，所述装置包括：
    第一获取单元，用于获取在所述屏幕的指纹按压操作的按压区域；
    检测单元，用于检测所述指纹按压操作的有效按压面积，所述有效按压面积为所述按压区域与所述指纹装置的感应区域的重叠部分的面积；
    确定单元，用于根据所述有效按压面积，确定所述指纹按压操作的有效性，所述指纹按压操作的有效性包括有效指纹按压或无效指纹按压。
  13. 根据权利要求12所述的装置，其特征在于，所述装置还包括：
    第二获取单元，用于在所述第一获取单元获取所述指纹按压操作的按压区域之前，获取所述指纹装置的感应区域的信息，所述指纹装置的感应区域的信息包括所述指纹装置的感应区域的位置和大小信息。
  14. 根据权利要求13所述的装置，其特征在于，所述第二获取单元具体用于：
    在所述屏幕上显示预览视图，所述预览视图为所述指纹装置的采集视图；
    在所述屏幕上提供一个可调整的图案悬浮窗；
    对所述图案悬浮窗进行调整，以使所述预览视图显示所述图案悬浮窗的完整图案且所述图案悬浮窗的图案铺满整个预览视图；
    获取所述图案悬浮窗的位置和大小信息，并将所述图案悬浮窗的位置和大小信息确定为所述指纹装置的感应区域的信息。
  15. 根据权利要求14所述的装置，其特征在于，若所述图案悬浮窗的大小与所述指纹装置的感应区域的大小相同，所述第二获取单元对所述图案悬浮窗进行调整，包括：
    移动所述图案悬浮窗，使得所述图案悬浮窗完整覆盖所述指纹装置的感应区域。
  16. 根据权利要求14所述的装置，其特征在于，若所述图案悬浮窗的大小与所述指纹装置的感应区域的大小不同，所述第二获取单元操作所述图案悬浮窗，包括：
    移动所述图案悬浮窗，并调整所述图案悬浮窗的大小，使得所述图案悬浮窗与所述感应区域的大小相同并完整覆盖所述指纹装置的感应区域。
  17. 根据权利要求12至16中任一项所述的装置，其特征在于，
    所述第一获取单元具体用于：
    根据所述屏幕上报的触摸检测数据，确定所述指纹按压操作的按压区域的位置和大小。
  18. 根据权利要求17所述的装置，其特征在于，若所述按压区域的形状为椭圆形，所述触摸检测数据包括所述按压区域的中心点坐标，所述按压区域的长轴方向，所述按压区域的长轴值和所述按压区域的短轴值；若所述按压区域的形状为圆形，所述触摸检测数据包括所述按压区域的中心点坐标和所述按压区域的半径。
  19. 根据权利要求17所述的装置，其特征在于，所述触摸检测数据包括所述指纹按压操作在所述屏幕上所有触点的坐标，所述第一获取单元根据所述屏幕上报的触摸检测数据，确定所述指纹按压操作的按压区域的位置和大小，包括：
    根据所述所有触点的坐标拟合出所述指纹按压操作的按压区域，并确定所述指纹按压操作的按压区域的位置和大小。
  20. 根据权利要求12至19中任一项所述的装置，其特征在于，所述确定单元具体用于：
    若所述有效按压面积大于或等于阈值，确定所述指纹按压操作为有效指纹按压；
    若所述有效按压面积小于所述阈值，确定所述指纹按压操作为无效指纹按压。
  21. 根据权利要求12至20中任一项所述的装置，其特征在于，所述装置还包括：
    提示单元，用于在所述确定单元确定所述指纹按压操作为无效指纹按压的情况下，提示用户重新进行指纹按压操作。
  22. 根据权利要求12至21中任一项所述的装置，其特征在于，所述装置还包括：
    控制单元，用于在所述确定单元确定所述指纹按压操作为有效指纹按压的情况下，控制所述指纹装置进行指纹图像采集。
  23. 一种终端设备，其特征在于，所述终端设备包括指纹识别系统和按压检测装置，其中所述指纹识别系统包括屏幕和指纹装置，所述指纹装置的感应区域至少部分位于所述屏幕的显示区域，并且，所述按压检测装置为如权利要求12至22中任一项所述的指纹识别系统的按压检测装置。
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