WO2017067280A1 - Procédé de réveil d'écran d'affichage basé sur un capteur d'empreintes digitales, appareil et terminal mobile - Google Patents

Procédé de réveil d'écran d'affichage basé sur un capteur d'empreintes digitales, appareil et terminal mobile Download PDF

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Publication number
WO2017067280A1
WO2017067280A1 PCT/CN2016/093738 CN2016093738W WO2017067280A1 WO 2017067280 A1 WO2017067280 A1 WO 2017067280A1 CN 2016093738 W CN2016093738 W CN 2016093738W WO 2017067280 A1 WO2017067280 A1 WO 2017067280A1
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WIPO (PCT)
Prior art keywords
object image
image
pressed object
fingerprint
preset
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Application number
PCT/CN2016/093738
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English (en)
Chinese (zh)
Inventor
张强
王立中
周海涛
蒋奎
贺威
Original Assignee
广东欧珀移动通信有限公司
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Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Publication of WO2017067280A1 publication Critical patent/WO2017067280A1/fr

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Classifications

    • 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]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of mobile terminal technologies, and in particular, to a fingerprint sensor-based display screen wake-up method, device, and mobile terminal.
  • the display screen size of the mobile terminal is getting larger and larger, and the user spends a lot of time every day to use the mobile terminal, so the power consumption problem of the mobile terminal has become the most concerned issue for the user.
  • the current mobile terminal usually integrates a fingerprint sensor for a scene that requires fingerprint authentication, such as a scene black-screen wake-up or unlock, application unlocking, and fingerprint payment.
  • the fingerprint sensors configured in the mobile terminal are mostly capacitive fingerprint sensors.
  • the fingerprint sensor When the user unlocks the mobile terminal in the sleep state (the display screen is also in the sleep state), the fingerprint sensor is usually pressed with a finger, and the skin on the finger is The fingerprint sensor forms a capacitance, and the fingerprint sensor can detect the capacitance value, thereby determining that the finger is pressed on the fingerprint sensor, the display screen of the mobile terminal is awakened, and the fingerprint sensor acquires the fingerprint image, if the fingerprint image and the fingerprint stored in the mobile terminal If the template matches, the mobile terminal is unlocked.
  • the display screen of the mobile terminal may be woken up because the body part such as the palm or other object that can form a capacitance with the fingerprint sensor is pressed to the fingerprint sensor.
  • the body part such as the palm or other object that can form a capacitance with the fingerprint sensor is pressed to the fingerprint sensor.
  • the display screen is awakened. After the display screen is woken up, it will increase the unnecessary power consumption of the mobile terminal and shorten the standby time, thereby affecting the user's use.
  • An object of the embodiments of the present invention is to provide a method, a device, and a mobile terminal for awakening a display screen based on a fingerprint sensor, so as to solve the problem that the display device is awakened by the false triggering of the fingerprint sensor in the prior art, resulting in an increase in power consumption of the mobile terminal.
  • an embodiment of the present invention provides a method for waking up a display screen based on a fingerprint sensor, including:
  • the display screen of the mobile terminal When the display screen of the mobile terminal is in a sleep state, if it is detected that the fingerprint sensor configured in the mobile terminal is pressed, the pressed object image is acquired by the fingerprint sensor;
  • an embodiment of the present invention provides a fingerprint sensor-based display wake-up device, including:
  • Pressing an object image obtaining module configured to acquire a pressed object image by the fingerprint sensor if the fingerprint sensor configured in the mobile terminal is pressed when the display screen of the mobile terminal is in a sleep state;
  • a fingerprint image determining module configured to determine whether the pressed object image is a fingerprint image
  • the display wake-up module is configured to determine whether to wake up the display screen according to the judgment result of the fingerprint image determination module.
  • an embodiment of the present invention provides a mobile terminal, including a fingerprint sensor-based display wake-up device according to an embodiment of the present invention.
  • the fingerprint sensor-based display wake-up solution provided in the embodiment of the present invention, when the display screen of the mobile terminal is in a sleep state, if the fingerprint sensor configured in the mobile terminal is detected to be pressed, the pressed object image is acquired by the fingerprint sensor; Whether the pressed object image is a fingerprint image determines whether to wake up the display screen according to the judgment result.
  • the body part such as the palm or other object that can form a capacitance with the fingerprint sensor may be pressed to the fingerprint sensor. At this time, the image of the pressed object is acquired by the fingerprint sensor, and the pressing is judged.
  • Whether the image of the object is a fingerprint image, and determining whether to wake up the display according to the judgment result can effectively prevent the display screen from being woken up due to false triggering, thereby saving system power consumption, thereby extending standby time and improving user experience.
  • FIG. 1 is a schematic flowchart of a method for waking up a display screen based on a fingerprint sensor according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of a method for waking up a display screen based on a fingerprint sensor according to Embodiment 2 of the present invention
  • FIG. 3 is a structural block diagram of a wake-up device for a display screen based on a fingerprint sensor according to Embodiment 3 of the present invention.
  • an embodiment of the present invention provides a method for waking up a display screen based on a fingerprint sensor, including:
  • the display screen of the mobile terminal When the display screen of the mobile terminal is in a sleep state, if it is detected that the fingerprint sensor configured in the mobile terminal is pressed, the pressed object image is acquired by the fingerprint sensor;
  • the determining whether the pressed object image is a fingerprint image includes:
  • the determining whether the contrast of the pressed object image reaches a preset standard includes:
  • the determining whether the contrast of the pressed object image reaches a preset standard includes:
  • the average value is greater than the preset average value and the variance value is less than the preset variance value, it is determined that the contrast of the pressed object image does not reach the preset criterion.
  • the determining whether the pressed object image is a fingerprint image includes:
  • the effective area of the pressed object image is within a preset area, determining that the pressed object image is a fingerprint image; otherwise, determining that the pressed object image is not a fingerprint image.
  • the method further includes:
  • the determining, according to the determining result, whether to wake up the display screen includes:
  • the display screen is kept in a sleep state.
  • the method further includes:
  • determining whether to wake up the display screen according to the determination result includes:
  • the fingerprint image is matched with the preset fingerprint template
  • the display is woken up.
  • the matching the fingerprint image with the preset fingerprint template includes:
  • the display screen is woken up and the reason for the matching failure is displayed;
  • the display screen is awakened and a password input interface is displayed.
  • an embodiment of the present invention provides a fingerprint sensor-based display wake-up device, including:
  • Pressing an object image obtaining module configured to acquire a pressed object image by the fingerprint sensor if the fingerprint sensor configured in the mobile terminal is pressed when the display screen of the mobile terminal is in a sleep state;
  • a fingerprint image determining module configured to determine whether the pressed object image is a fingerprint image
  • the display wake-up module is configured to determine whether to wake up the display screen according to the judgment result of the fingerprint image determination module.
  • the fingerprint image determining module includes:
  • the contrast determination unit is configured to determine whether the contrast of the pressed object image reaches a preset standard, and if yes, determine that the pressed object image is a fingerprint image, and if not, determine that the pressed object image is not a fingerprint image.
  • the contrast determining unit is specifically configured to:
  • the contrast determining unit is specifically configured to:
  • the average value is greater than the preset average value and the variance value is less than the preset variance value, it is determined that the contrast of the pressed object image does not reach the preset criterion.
  • the fingerprint image determining module includes:
  • the effective area determining unit is configured to determine that the pressed object image is a fingerprint image if the effective area of the pressed object image is within a preset area, and otherwise determine that the pressed object image is not a fingerprint image.
  • the effective area determining unit is specifically configured to:
  • the display wake-up module is specifically configured to:
  • the display screen is kept in a sleep state.
  • the display wake-up module includes:
  • a matching unit configured to: when determining that the pressed object image is a fingerprint image according to the determination result, matching the fingerprint image with the preset fingerprint template;
  • the wake-up unit is configured to wake up the display if the matching is successful.
  • the matching unit is specifically configured to:
  • the display screen is woken up and the reason for the matching failure is displayed;
  • the display screen is awakened and a password input interface is displayed.
  • an embodiment of the present invention provides a mobile terminal, including a fingerprint sensor, and a fingerprint sensor-based display according to any one of the foregoing possible implementation manners of the second aspect or the second aspect of the embodiments of the present invention.
  • FIG. 1 is a schematic flowchart diagram of a method for waking up a display screen based on a fingerprint sensor according to Embodiment 1 of the present invention.
  • the method can be performed by a fingerprint sensor based display wake-up device, wherein the device can be implemented by software and/or hardware, and can generally be integrated in a mobile terminal.
  • the method includes:
  • Step 101 When the display screen of the mobile terminal is in a sleep state, if it is detected that the fingerprint sensor configured in the mobile terminal is pressed, the pressed object image is acquired by the fingerprint sensor.
  • the mobile terminal in this embodiment may be a device such as a mobile phone, a smart watch, a tablet computer, and a notebook computer configured with a fingerprint sensor. It is preferably a smartphone.
  • the system and the display screen are in a sleep state, and the fingerprint sensor is in an active state, and it can be monitored in real time whether it is pressed.
  • Common fingerprint sensors mainly include optical fingerprint sensors and semiconductor fingerprint sensors. This embodiment does not limit the type of the fingerprint sensor.
  • the following describes the working mode of the fingerprint sensor by taking the capacitive fingerprint sensor in the semiconductor fingerprint sensor as an example.
  • the capacitive fingerprint sensor in the semiconductor fingerprint sensor as an example.
  • the skin on the surface of the finger and the fingerprint sensor form a capacitance. Since the surface of the finger surface is uneven, the actual distance between the bump and the concave point and the fingerprint sensor is different, and the capacitance value formed is different.
  • the collected capacitance value is processed to obtain a fingerprint image.
  • the existing mobile terminal when the fingerprint sensor detects the capacitance value, it is considered that the finger has pressed the fingerprint sensor, and the display screen is awakened.
  • the fingerprint sensor when the user's palm or other body part or other object that can form a capacitance with the fingerprint sensor is pressed to the fingerprint sensor, the fingerprint sensor also detects the capacitance value, thus causing a false positive, thereby awakening the display screen and increasing unnecessary System power consumption.
  • the fingerprint sensor when it detects the capacitance value, it can be regarded as monitoring that the fingerprint sensor configured in the mobile terminal is pressed, and then the pressed object image is acquired by the fingerprint sensor.
  • the pressed object image may specifically be an image of a surface on which the pressing object contacts the fingerprint sensor.
  • the pressed object image is a surface image of a portion of the skin in which the palm is in contact with the fingerprint sensor.
  • Step 102 Determine whether the pressed object image is a fingerprint image, and determine whether to wake up the display screen according to the determination result.
  • the image obtained by the common fingerprint sensor is a grayscale image.
  • the following is a list of several methods for determining the image of the pressed object as a grayscale image.
  • an average value of gray values of all pixel points in the pressed object image may be calculated; when the average value is less than the preset average value, it is determined that the contrast of the pressed object image does not reach a preset standard, and the preset average value may refer to normal
  • the fingerprint image is determined; the variance value of the gray value of all the pixels in the pressed object image may also be calculated; when the variance value is less than the preset variance value, it is determined that the contrast of the pressed object image does not reach the preset standard, because the square The smaller the difference is, the smaller the difference between the gray values of different pixel points is, so the pressed object image does not exhibit the same texture as the fingerprint image.
  • the average value and the variance value of the gray values of all the pixels in the pressed object image may be simultaneously calculated; when the average value is less than the preset average value and the variance value is smaller than Determining the contrast of the pressed object image does not reach a preset criterion when the variance value is preset; determining the pressed object when the average value is greater than a preset average value and the variance value is less than a preset variance value The contrast of the image does not reach the preset standard.
  • the pressed object image is not a fingerprint image; for example, when the average value is large, the variance is small, indicating that the image is nearly black, and the contrast is If the preset standard is not reached, the pressed object image is not a fingerprint image; for example, when the average value is large, the variance is large, indicating that the image at this time contains the same texture as the fingerprint image, and the contrast can be considered to have reached the preset standard.
  • the pressed object image is a fingerprint image.
  • the effective area of the pressed object image is within the preset area, it is determined that the pressed object image is a fingerprint image; otherwise, it is determined that the pressed object image is not a fingerprint image.
  • the effective area containing the fingerprint information in the collected fingerprint image is close to an elliptical or semi-elliptical shape, and the area thereof is in a certain area.
  • the area can be determined as a preset area range; and the shape of the palm or other objects that are likely to cause false triggering is different, so when the fingerprint sensor is in contact with the fingerprint sensor, the collected surface image information includes the surface texture information of the object.
  • the area of the effective area ie, the effective area
  • Whether the pressed object image is a fingerprint image can be determined by determining whether the effective area of the pressed object image is within a preset area. Further, in order to improve the accuracy of the determination, it is further possible to detect whether the effective area shape corresponding to the effective area matches the shape of the effective area of the fingerprint image. For example, the sum of the gray values of the pixels of each column in the image of the pressed object can be calculated, and whether the change trend of the sum of the gray values corresponding to all the columns meets a preset criterion (for example, whether it is changed from small to large, and then from large to small), If it is met, the pressed object image is considered to be a fingerprint image.
  • a preset criterion for example, whether it is changed from small to large, and then from large to small
  • the above two determination methods may be combined, and when the object image is pressed while satisfying the determination conditions of the two determination methods,
  • the pressed object image is considered to be a fingerprint image. For example, if the contrast of the pressed object image reaches a preset standard and the effective area of the pressed object image is within the preset area, it is determined that the pressed object image is a fingerprint image.
  • the display screen when it is determined that the pressed object image is a fingerprint image, the display screen can be woken up, that is, the display screen is illuminated.
  • the fingerprint sensor-based display screen wake-up method provided by the first embodiment of the present invention, when the display screen of the mobile terminal is in a sleep state, if the fingerprint sensor configured in the mobile terminal is detected to be pressed, the pressed object image is acquired by the fingerprint sensor; Whether the pressed object image is a fingerprint image determines whether to wake up the display screen according to the judgment result.
  • the body part such as the palm or other object that can form a capacitance with the fingerprint sensor may be pressed to the fingerprint sensor. At this time, the image of the pressed object is acquired by the fingerprint sensor, and the pressing is judged.
  • Whether the image of the object is a fingerprint image, and determining whether to wake up the display according to the judgment result can effectively prevent the display screen from being woken up due to false triggering, thereby saving system power consumption, thereby extending standby time and improving user experience.
  • FIG. 2 is a schematic flowchart diagram of a method for waking up a display screen based on a fingerprint sensor according to Embodiment 2 of the present invention.
  • the embodiment optimizes "determining whether to wake up the display according to the determination result": when the judgment result is that the pressed object image is not a fingerprint image, the display screen is kept in a sleep state; when the determination is made according to the determination result When the object image is a fingerprint image, the fingerprint image is matched with the preset fingerprint template, and if the matching is successful, the display screen is awakened.
  • the method in this embodiment includes the following steps:
  • Step 201 When the display screen of the mobile terminal is in a sleep state, if it is detected that the fingerprint sensor configured in the mobile terminal is pressed, the pressed object image is acquired by the fingerprint sensor.
  • the system and the display screen are in a sleep state, and the fingerprint sensor is in an active state, and it can be monitored in real time whether it is pressed.
  • an interrupt signal can be generated to wake up the system of the mobile terminal, but does not wake up the display.
  • the system acquires an image of the pressed object through the fingerprint sensor.
  • Step 202 Determine whether the contrast of the pressed object image reaches a preset standard. If yes, go to step 203; otherwise, go to step 207.
  • Step 203 Determine whether the effective area of the pressed object image is within a preset area. If yes, go to step 204; otherwise, go to step 207.
  • Step 204 Determine that the pressed object image is a fingerprint image, and match the fingerprint image with the preset fingerprint template.
  • Step 205 Determine whether the matching is successful. If yes, go to step 206; otherwise, go to step 207.
  • Step 206 wake up the display.
  • Step 207 Keep the display screen in a sleep state.
  • the system of the mobile terminal can be returned to the sleep state while keeping the display screen in a sleep state.
  • the first matching failure may also be that the acquired fingerprint image is inaccurate.
  • the vibrating prompt may be issued while keeping the display screen in a sleep state, reminding the user to continue using the finger to press the fingerprint sensor, and acquiring the fingerprint image again. match.
  • the first threshold of the number of matching times may be set; if the number of matching times of the matching failure reaches the first threshold, the display screen is woken up and the reason for the matching failure is displayed. For example, 3 times, when the matching fails for 3 consecutive times, the display screen can be awakened, and the reason for the user's fingerprint matching failure is prompted in text form, such as the user's finger posture is incorrect or there is dirt on the finger surface, please adjust the user, etc.; While keeping the display in hibernation, an audible alert is sounded.
  • a second threshold of the number of matches may also be set; if the number of matches for which the match fails reaches the second threshold, the display screen is awakened and a password input interface is displayed.
  • the display screen can be woken up, and a password input interface is displayed, prompting the user to unlock the mobile terminal by inputting a password.
  • the first threshold of the number of matching times and the second threshold of the number of matching times may be set only one of them, or may be set, which may be set by the system by default, or set by the user according to personal habits.
  • the method for waking up the display screen based on the fingerprint sensor provided by the second embodiment of the present invention when determining that the pressed object image is not a fingerprint image, keeping the display screen in a sleep state; when determining that the pressed object image is a fingerprint image, temporarily not waking up the display screen Instead, the fingerprint image is matched with the preset fingerprint template, and if the matching is successful, the display screen is awakened.
  • keeping the display screen to sleep can further save the power consumption of the mobile terminal.
  • FIG. 3 is a structural block diagram of a wake-up device for a display screen based on a fingerprint sensor according to Embodiment 3 of the present invention.
  • the apparatus may be implemented by software and/or hardware, generally integrated in a mobile terminal, and may wake up the mobile terminal by performing a fingerprint sensor based display wake-up method.
  • the device includes: a pressed object image acquiring module 301, a fingerprint image determining module 302, and a display wake-up module 303.
  • the pressed object image obtaining module 301 is configured to acquire a pressed object image by using the fingerprint sensor if the fingerprint sensor configured in the mobile terminal is detected to be pressed when the display screen of the mobile terminal is in a sleep state.
  • the fingerprint image determining module 302 is configured to determine whether the pressed object image is a fingerprint image.
  • the display wake-up module 303 is configured to determine whether to wake up the display screen according to the determination result of the fingerprint image determination module.
  • the fingerprint image determining module 302 may include a contrast determining unit, configured to determine whether the contrast of the pressed object image reaches a preset standard, and if yes, determine that the pressed object image is a fingerprint image, If not, it is determined that the pressed object image is not a fingerprint image.
  • the contrast determining unit may be specifically configured to: calculate an average value of gray values of all pixel points in the pressed object image, and determine when the average value is less than a preset average value.
  • the contrast of the image of the pressed object does not reach a preset standard; or, the variance value of the gray value of all the pixels in the pressed object image is calculated, and when the variance value is less than the preset variance value, The contrast of the pressed object image does not reach the preset standard.
  • the contrast determining unit may be specifically configured to: calculate an average value and a variance value of gray values of all pixel points in the pressed object image, when the average value is less than a preset average Determining that the contrast of the pressed object image does not reach a preset criterion when the value and the variance value are less than a preset variance value; or when the average value is greater than a preset average value and the variance value is less than a preset square When the difference is made, it is determined that the contrast of the pressed object image does not reach the preset standard.
  • the fingerprint image determining module 302 includes an effective area determining unit, configured to determine that the pressed object image is a fingerprint image if the effective area of the pressed object image is within a preset area. Otherwise, it is determined that the pressed object image is not a fingerprint image.
  • the effective area determining unit may be specifically configured to: detect whether an effective area shape corresponding to an effective area of the pressed object image matches a valid area shape of the fingerprint image, and if yes, determine the The pressed object image is a fingerprint image, otherwise, it is determined that the pressed object image is not a fingerprint image.
  • the display wake-up module 303 may be specifically configured to: when the result of the determination is that the pressed object image is not a fingerprint image, keep the display screen in a sleep state.
  • the display wake-up module 303 includes a matching unit and a wake-up unit.
  • the matching unit is configured to: when determining that the pressed object image is a fingerprint image according to the determination result, matching the fingerprint image with a preset fingerprint template; and the waking unit is configured to wake up if the matching is successful The display screen.
  • the matching unit may be specifically configured to: if the matching number of matching failures reaches the first threshold, wake up the display screen and display the reason for the matching failure; or if the matching fails the matching When the number of times reaches the second threshold, the display screen is awakened and a password input interface is displayed.
  • the fourth embodiment provides a mobile terminal, which includes the fingerprint sensor-based display wake-up device described in the embodiment of the present invention, and can wake up the display screen by performing a fingerprint sensor-based display wake-up method.
  • the mobile terminal in this embodiment may be a device such as a mobile phone, a smart watch, a tablet computer, and a notebook computer configured with a fingerprint sensor. It is preferably a smartphone.
  • the fingerprint sensor is coupled to the fingerprint sensor-based display wake-up device.
  • the mobile terminal can obtain the image of the pressed object through the fingerprint sensor, and determine Whether the image of the pressed object is a fingerprint image, and determining whether to wake up the display according to the judgment result can effectively prevent the display screen from being woken up due to false triggering, thereby saving system power consumption, thereby extending standby time and improving user experience.
  • the above product can perform the method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention concerne un procédé de réveil d'écran d'affichage basé sur un capteur d'empreintes digitales, le procédé comprenant les étapes consistant à : lorsque l'écran d'affichage d'un terminal mobile est dans un état dormant, si l'on détecte qu'un capteur d'empreintes digitales configuré dans le terminal mobile a été pressé, alors acquérir une image de l'objet appuyant au moyen du capteur d'empreintes digitales ; évaluer si l'image d'objet appuyant est une image d'empreinte digitale, et sur la base des résultats d'évaluation, déterminer s'il convient de réveiller l'écran d'affichage ; en outre, la présente invention concerne également un appareil de réveil d'écran d'affichage basé sur un capteur d'empreintes digitales et un terminal mobile.
PCT/CN2016/093738 2015-10-19 2016-08-05 Procédé de réveil d'écran d'affichage basé sur un capteur d'empreintes digitales, appareil et terminal mobile WO2017067280A1 (fr)

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CN201510680020.2A CN105260105B (zh) 2015-10-19 2015-10-19 基于指纹传感器的显示屏唤醒方法、装置及移动终端
CN201510680020.2 2015-10-19

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CN105759941A (zh) * 2016-02-25 2016-07-13 上海斐讯数据通信技术有限公司 一种移动终端休眠控制系统、方法及移动终端
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