WO2017067280A1 - Fingerprint sensor-based display screen wake-up method, apparatus, and mobile terminal - Google Patents

Fingerprint sensor-based display screen wake-up method, apparatus, and mobile terminal 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
Other languages
French (fr)
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/en

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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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Abstract

A fingerprint sensor-based display screen wake-up method, the method comprising: when the display screen of a mobile terminal is in a dormant state, if detecting that a fingerprint sensor configured in the mobile terminal has been pressed, then acquiring an image of the pressing object by means of the fingerprint sensor; judging whether the pressing object image is a fingerprint image, and on the basis of the judging results, determining whether to wake up the display screen; in addition, also provided in the present invention are a corresponding fingerprint sensor-based display screen wake-up apparatus and mobile terminal.

Description

基于指纹传感器的显示屏唤醒方法、装置及移动终端 Fingerprint sensor-based display wake-up method, device and mobile terminal
本申请要求于2015年10月19日提交中国专利局、申请号为2015106800202、发明名称为“基于指纹传感器的显示屏唤醒方法、装置及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed on October 19, 2015, the Chinese Patent Office, the application number 2015106800202, and the invention titled "Fingerprint-based display screen wake-up method, device and mobile terminal", the entire contents of which are The citations are incorporated herein by reference.
技术领域Technical field
本发明涉及移动终端技术领域，尤其涉及一种基于指纹传感器的显示屏唤醒方法、装置及移动终端。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.
背景技术Background technique
目前，移动终端的显示屏幕尺寸越来越大，且用户每天会花费大量的时间来使用移动终端，所以移动终端的功耗问题已成为用户最关心的问题。此外，为了保护用户的信息安全，现在的移动终端中通常集成有指纹传感器，用于需要指纹鉴权的场景，如终端黑屏唤醒或解锁、应用程序解锁以及指纹支付等场景。At present, 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. In addition, in order to protect the information security of 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.
移动终端中配置的指纹传感器大多为电容式指纹传感器，用户在对休眠状态下的移动终端（显示屏也处于休眠状态）进行解锁时，通常需要使用手指按压指纹传感器，此时手指上的皮肤与指纹传感器会形成电容，指纹传感器能够检测到电容值，从而确定手指按压在指纹传感器上，移动终端的显示屏会被唤醒，同时指纹传感器获取指纹图像，若该指纹图像与移动终端中存储的指纹模板匹配，则解锁移动终端。然而，当用户并不想唤醒移动终端时，可能由于手掌等身体部位或其他可与指纹传感器形成电容的物体按压到指纹传感器，移动终端的显示屏幕也会被唤醒。例如，用户用手掌握持移动终端，或移动终端被放到布料比较薄的裤兜中并接触到导电物体等情况下，都容易误触发而导致显示屏幕被唤醒。显示屏幕被唤醒后，会增加移动终端不必要的功耗，缩短待机时间，从而影响用户使用。The fingerprint sensors configured in the mobile terminal are mostly capacitive fingerprint sensors. 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. However, when the user does not want to wake up the mobile terminal, 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. For example, if the user grasps the mobile terminal by hand, or the mobile terminal is placed in a thin trouser pocket of the cloth and contacts a conductive object, etc., it is easy to be triggered by mistake and 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.
技术问题technical problem
本发明实施例的目的是提供一种基于指纹传感器的显示屏唤醒方法、装置及移动终端，以解决现有技术中因误触发指纹传感器而唤醒显示屏幕，导致移动终端功耗增加的问题。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.
技术解决方案Technical solution
第一方面，本发明实施例提供了一种基于指纹传感器的显示屏唤醒方法，包括：In a first aspect, an embodiment of the present invention provides a method for waking up a display screen based on a fingerprint sensor, including:
当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
判断所述按压物体图像是否为指纹图像，根据判断结果确定是否唤醒所述显示屏。Determining whether the pressed object image is a fingerprint image, and determining whether to wake up the display screen according to the determination result.
第二方面，本发明实施例提供了一种基于指纹传感器的显示屏唤醒装置，包括：In a second aspect, an embodiment of the present invention provides a fingerprint sensor-based display wake-up device, including:
按压物体图像获取模块，用于当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
指纹图像判断模块，用于判断所述按压物体图像是否为指纹图像；a fingerprint image determining module, configured to determine whether the pressed object image is a fingerprint image;
显示屏唤醒模块，用于根据指纹图像判断模块的判断结果确定是否唤醒所述显示屏。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.
第三方面，本发明实施例提供了一种移动终端，包括本发明实施例中的基于指纹传感器的显示屏唤醒装置。In a third aspect, 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.
有益效果 Beneficial effect
本发明实施例中提供的基于指纹传感器的显示屏唤醒方案，当移动终端的显示屏处于休眠状态时，若监测到移动终端中配置的指纹传感器被按压，则通过指纹传感器获取按压物体图像；判断按压物体图像是否为指纹图像，根据判断结果确定是否唤醒显示屏。通过采用上述技术方案，当用户并非主动唤醒显示屏时，手掌等身体部位或其他可与指纹传感器形成电容的物体可能会按压到指纹传感器，此时，通过指纹传感器获取按压物体图像，并判断按压物体图像是否为指纹图像，再根据判断结果确定是否唤醒显示屏，可有效防止显示屏因误触发而被唤醒，可节省***功耗，从而延长待机时间，提升用户使用体验。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. By adopting the above technical solution, when the user does not actively wake up the display screen, 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.
附图说明DRAWINGS
图1为本发明实施例一提供的一种基于指纹传感器的显示屏唤醒方法的流程示意图；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;
图2为本发明实施例二提供的一种基于指纹传感器的显示屏唤醒方法的流程示意图；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;
图3为本发明实施例三提供的一种基于指纹传感器的显示屏唤醒装置的结构框图。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.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。可以理解的是，此处所描述的具体实施例仅仅用于解释本发明，而非对本发明的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本发明相关的部分而非全部结构。The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should also be noted that, for ease of description, only some, but not all, of the structures related to the present invention are shown in the drawings.
在更加详细地讨论示例性实施例之前应当提到的是，一些示例性实施例被描述成作为流程图描绘的处理或方法。虽然流程图将各步骤描述成顺序的处理，但是其中的许多步骤可以被并行地、并发地或者同时实施。此外，各步骤的顺序可以被重新安排。当其操作完成时所述处理可以被终止，但是还可以具有未包括在附图中的附加步骤。所述处理可以对应于方法、函数、规程、子例程、子程序等等。Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as a process or method depicted as a flowchart. Although the flowcharts describe the various steps as a sequential process, many of the steps can be implemented in parallel, concurrently, or concurrently. In addition, the order of the steps can be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the figures. The processing may correspond to methods, functions, procedures, subroutines, subroutines, and the like.
第一方面，本发明实施例提供了一种基于指纹传感器的显示屏唤醒方法，包括： In a first aspect, an embodiment of the present invention provides a method for waking up a display screen based on a fingerprint sensor, including:
当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
判断所述按压物体图像是否为指纹图像，根据判断结果确定是否唤醒所述显示屏。Determining whether the pressed object image is a fingerprint image, and determining whether to wake up the display screen according to the determination result.
结合第一方面，在第一方面的第一种可能的实施方式中，所述判断所述按压物体图像是否为指纹图像，包括：In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the determining whether the pressed object image is a fingerprint image includes:
判断所述按压物体图像的对比度是否达到预设标准，若是，则确定所述按压物体图像为指纹图像，若否，则确定所述按压物体图像不为指纹图像。Determining whether the contrast of the pressed object image reaches a preset standard, and if yes, determining that the pressed object image is a fingerprint image, and if not, determining that the pressed object image is not a fingerprint image.
结合第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，所述判断所述按压物体图像的对比度是否达到预设标准，包括：With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining whether the contrast of the pressed object image reaches a preset standard includes:
计算所述按压物体图像中所有像素点的灰度值的平均值，当所述平均值小于预设平均值时，确定所述按压物体图像的对比度未达到预设标准；或者，Calculating an average value of gray values of all pixel points in the pressed object image, and determining that a contrast of the pressed object image does not reach a preset standard when the average value is less than a preset average value; or
计算所述按压物体图像中所有像素点的灰度值的方差值，当所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。Calculating a variance value of the gray value of all the pixels in the pressed object image, and when the variance value is less than the preset variance value, determining that the contrast of the pressed object image does not reach a preset criterion.
结合第一方面的第一种可能的实施方式，在第一方面的第三种可能的实施方式中，所述判断所述按压物体图像的对比度是否达到预设标准，包括：With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the determining whether the contrast of the pressed object image reaches a preset standard includes:
计算所述按压物体图像中所有像素点的灰度值的平均值和方差值；当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；或者Calculating an average value and a variance value of gray values of all pixel points in the pressed object image; determining the pressing when the average value is less than a preset average value and the variance value is less than a preset variance value The contrast of the object image does not reach the preset standard; or
当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。When 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.
结合第一方面，在第一方面的第四种可能的实施方式中，所述判断所述按压物体图像是否为指纹图像，包括：With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the determining whether the pressed object image is a fingerprint image includes:
若所述按压物体图像的有效面积处于预设面积范围内，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。If 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.
结合第一方面的第四种可能的实施方式，在第一方面的第五种可能的实施方式中，若所述按压物体图像的有效面积处于预设面积范围内时，还包括：In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, if the effective area of the pressed object image is within a preset area, the method further includes:
检测所述按压物体图像的有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符，若是，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。And detecting whether the effective area shape corresponding to the effective area of the pressed object image matches the effective area shape of the fingerprint image, and if yes, determining that the pressed object image is a fingerprint image; otherwise, determining that the pressed object image is not a fingerprint image.
结合第一方面，在第一方面的第六种可能的实施方式中，所述根据判断结果确定是否唤醒所述显示屏，包括：With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the determining, according to the determining result, whether to wake up the display screen includes:
当判断结果为所述按压物体图像不为指纹图像时，保持所述显示屏处于休眠状态。When the result of the determination is that the pressed object image is not a fingerprint image, the display screen is kept in a sleep state.
结合第一方面的第六种可能的实施方式，在第一方面的第七种可能的实施方式中，所述保持所述显示屏处于休眠状态的同时，还包括：In conjunction with the sixth possible implementation of the first aspect, in a seventh possible implementation manner of the first aspect, the maintaining the display screen in a dormant state, the method further includes:
发出振动提示。Give a vibrating alert.
结合第一方面，在第一方面的第八种可能的实施方式中，述根据判断结果确定是否唤醒显示屏，包括：With reference to the first aspect, in an eighth possible implementation manner of the first aspect, determining whether to wake up the display screen according to the determination result includes:
当根据判断结果确定所述按压物体图像为指纹图像时，将所述指纹图像与预设指纹模板进行匹配；When it is determined that the pressed object image is a fingerprint image according to the determination result, the fingerprint image is matched with the preset fingerprint template;
若匹配成功，则唤醒所述显示屏。If the match is successful, the display is woken up.
结合第一方面的第八种可能的实施方式，在第一方面的第九种可能的实施方式中，所述将所述指纹图像与预设指纹模板进行匹配，包括：In conjunction with the eighth possible implementation of the first aspect, in the ninth possible implementation manner of the first aspect, the matching the fingerprint image with the preset fingerprint template includes:
若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因；或者If the number of matching failures reaches the first threshold, the display screen is woken up and the reason for the matching failure is displayed; or
若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。If the number of matching failures reaches the second threshold, the display screen is awakened and a password input interface is displayed.
第二方面，本发明实施例提供了一种基于指纹传感器的显示屏唤醒装置，包括： In a second aspect, an embodiment of the present invention provides a fingerprint sensor-based display wake-up device, including:
按压物体图像获取模块，用于当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
指纹图像判断模块，用于判断所述按压物体图像是否为指纹图像；a fingerprint image determining module, configured to determine whether the pressed object image is a fingerprint image;
显示屏唤醒模块，用于根据指纹图像判断模块的判断结果确定是否唤醒所述显示屏。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.
结合第二方面，在第二方面的第一种可能的实施方式中，所述指纹图像判断模块包括：In conjunction with the second aspect, in a first possible implementation manner of the second aspect, the fingerprint image determining module includes:
对比度判断单元，用于判断所述按压物体图像的对比度是否达到预设标准，若是，则确定所述按压物体图像为指纹图像，若否，则确定所述按压物体图像不为指纹图像。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.
结合第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述对比度判断单元，具体用于：In conjunction with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the contrast determining unit is specifically configured to:
计算所述按压物体图像中所有像素点的灰度值的平均值，当所述平均值小于预设平均值时，确定所述按压物体图像的对比度未达到预设标准；或者，Calculating an average value of gray values of all pixel points in the pressed object image, and determining that a contrast of the pressed object image does not reach a preset standard when the average value is less than a preset average value; or
计算所述按压物体图像中所有像素点的灰度值的方差值，当所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。Calculating a variance value of the gray value of all the pixels in the pressed object image, and when the variance value is less than the preset variance value, determining that the contrast of the pressed object image does not reach a preset criterion.
结合第二方面的第一种可能的实施方式，在第二方面的第三种可能的实施方式中，所述对比度判断单元，具体用于：In conjunction with the first possible implementation of the second aspect, in a third possible implementation of the second aspect, the contrast determining unit is specifically configured to:
计算所述按压物体图像中所有像素点的灰度值的平均值和方差值，当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；或者Calculating an average value and a variance value of the gray values of all the pixels in the pressed object image, and determining the pressing when the average value is less than a preset average value and the variance value is less than a preset variance value The contrast of the object image does not reach the preset standard; or
当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。When 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.
结合第二方面，在第二方面的第四种可能的实施方式中，所述指纹图像判断模块包括：In conjunction with the second aspect, in a fourth possible implementation manner of the second aspect, the fingerprint image determining module includes:
有效面积判断单元，用于若所述按压物体图像的有效面积处于预设面积范围内，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。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.
结合第二方面的第四种可能的实施方式，在第二方面的第五种可能的实施方式中，所述有效面积判断单元，具体用于：With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the effective area determining unit is specifically configured to:
检测所述按压物体图像的有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符，若是，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。And detecting whether the effective area shape corresponding to the effective area of the pressed object image matches the effective area shape of the fingerprint image, and if yes, determining that the pressed object image is a fingerprint image; otherwise, determining that the pressed object image is not a fingerprint image.
结合第二方面，在第二方面的第六种可能的实施方式中，所述显示屏唤醒模块，具体用于：With reference to the second aspect, in a sixth possible implementation manner of the second aspect, the display wake-up module is specifically configured to:
当判断结果为所述按压物体图像不为指纹图像时，保持所述显示屏处于休眠状态。When the result of the determination is that the pressed object image is not a fingerprint image, the display screen is kept in a sleep state.
结合第二方面，在第二方面的第七种可能的实施方式中，所述显示屏唤醒模块，包括：In conjunction with the second aspect, in a seventh possible implementation manner of the second aspect, the display wake-up module includes:
匹配单元，用于当根据判断结果确定所述按压物体图像为指纹图像时，将所述指纹图像与预设指纹模板进行匹配；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;
唤醒单元，用于若匹配成功，则唤醒所述显示屏。The wake-up unit is configured to wake up the display if the matching is successful.
结合第二方面的第七种可能的实施方式，在第二方面的第八种可能的实施方式中，所述匹配单元，具体用于：With reference to the seventh possible implementation of the second aspect, in the eighth possible implementation manner of the second aspect, the matching unit is specifically configured to:
若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因；或者If the number of matching failures reaches the first threshold, the display screen is woken up and the reason for the matching failure is displayed; or
若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。If the number of matching failures reaches the second threshold, the display screen is awakened and a password input interface is displayed.
第三方面，本发明实施例提供了一种移动终端，包括指纹传感器，以及本发明实施例中第二方面或第二方面的上述任意一种可能的实施方式中所述的基于指纹传感器的显示屏唤醒装置，其中，所述指纹传感器与所述基于指纹传感器的显示屏唤醒装置耦合。In a third aspect, 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. A screen wake-up device, wherein the fingerprint sensor is coupled to the fingerprint sensor-based display wake-up device.
实施例一Embodiment 1
图1为本发明实施例一提供的一种基于指纹传感器的显示屏唤醒方法的流程示意图。该方法可以由基于指纹传感器的显示屏唤醒装置执行，其中该装置可由软件和/或硬件实现，一般可集成在移动终端中。如图1所示，该方法包括：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. As shown in Figure 1, the method includes:
步骤101、当移动终端的显示屏处于休眠状态时，若监测到移动终端中配置的指纹传感器被按压，则通过指纹传感器获取按压物体图像。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.
示例性的，本实施例中的移动终端具体可为配置有指纹传感器的手机、智能手表、平板电脑和笔记本电脑等设备。优选为智能手机。Exemplarily, 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.
示例性的，通常情况下，移动终端处于休眠状态时，***和显示屏均处于休眠状态，而指纹传感器处于工作状态，可实时监测其是否被按压。Exemplarily, when the mobile terminal is in a sleep state, 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.
常见的指纹传感器主要包括光学指纹传感器和半导体指纹传感器。本实施例对指纹传感器的类型不作限定。下面以半导体指纹传感器中的电容式指纹传感器为例对指纹传感器的工作方式进行说明，当用户使用手指按压指纹传感器时，手指表面上的皮肤与指纹传感器会形成电容。由于手指表面纹路凸凹不平，凸点处和凹点处与指纹传感器的实际距离大小就不一样，形成的电容值也就不一样，对采集到的电容值进行处理后得到指纹图像。在现有的移动终端中，当指纹传感器检测到电容值时，就认为手指已按压指纹传感器，便会唤醒显示屏。但是，当用户的手掌等身体部位或其他可与指纹传感器形成电容的物体按压到指纹传感器时，指纹传感器也会检测到电容值，所以就造成了误判，从而唤醒显示屏，增加了不必要的***功耗。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. When the user presses the fingerprint sensor with a finger, 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. In 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. However, 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.
示例性的，当指纹传感器检测到电容值时，可视为监测到移动终端中配置的指纹传感器被按压，则通过指纹传感器获取按压物体图像。所述按压物体图像具体可为按压物体与指纹传感器接触的表面的图像。例如，手掌按压到指纹传感器时，按压物体图像为手掌与指纹传感器接触的部分皮肤的表面图像。Exemplarily, when the fingerprint sensor 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. For example, when the palm is pressed to 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.
步骤102、判断按压物体图像是否为指纹图像，根据判断结果确定是否唤醒所述显示屏。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.
判断按压物体图像是否为指纹图像的方式可以有很多种，本实施例并不做具体限定，下面给出两种方式作为示意性说明。There are many ways to determine whether the image of the pressed object is a fingerprint image. This embodiment is not specifically limited. Two modes are given below as a schematic description.
1、判断按压物体图像的对比度是否达到预设标准，若是，则确定按压物体图像为指纹图像，若否，则确定按压物体图像不为指纹图像。1. 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.
具体的，判断按压物体图像的对比度是否达到预设标准的方式也可以有很多种。常见的指纹传感器获取到的图像为灰度图，下面以按压物体图像是灰度图为例列举几种判断方式。例如，可计算按压物体图像中所有像素点的灰度值的平均值；当平均值小于预设平均值时，确定按压物体图像的对比度未达到预设标准，所述预设平均值可参照正常的指纹图像来确定；还可计算按压物体图像中所有像素点的灰度值的方差值；当方差值小于预设方差值时，确定按压物体图像的对比度未达到预设标准，因为方差值越小，说明不同像素点的灰度值之间的差异越小，所以该按压物体图像不会呈现如指纹图像一样的纹路。进一步的，为了提高判断的准确性，还可同时计算按压物体图像中所有像素点的灰度值的平均值和方差值；当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。比如当平均值很小，方差很小，说明图像接近全白，对比度未达到预设标准，该按压物体图像不是指纹图像；比如当平均值很大，方差很小，说明图像接近全黑，对比度未达到预设标准，该按压物体图像不是指纹图像；比如当平均值很大，方差很大，说明这个时候的图像中包含了如指纹图像一样的纹路，可认为对比度已达到预设标准，该按压物体图像是指纹图像。Specifically, there are many ways to determine whether the contrast of the pressed object image reaches a preset standard. 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. For example, 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. Further, in order to improve the accuracy of the judgment, 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. For example, when the average value is small and the variance is small, the image is nearly white, the contrast does not reach the preset standard, and 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.
2、若按压物体图像的有效面积处于预设面积范围内，则确定按压物体图像为指纹图像，否则，确定按压物体图像不为指纹图像。2. If 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.
示例性的，手指在与指纹传感器接触时，由于手指的特殊形状，所采集到的指纹图像中，包含指纹信息的有效区域会接近于椭圆形或半椭圆形，其面积会处于一定的面积范围内，可将该面积范围确定为预设面积范围；而手掌或者其他容易引起误触发的物体形状各异，所以在与指纹传感器接触时，所采集到的指纹图像中，包含物体表面纹理信息的有效区域的面积（即有效面积）不确定，且很难形成接近于椭圆形或半椭圆形。可通过判断按压物体图像的有效面积是否处于预设面积范围内，来确定按压物体图像是否为指纹图像。进一步的，为了提高判定的准确度，还可进一步检测有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符。例如，可计算按压物体图像中每列的像素点的灰度值总和，判断所有列对应的灰度值总和的变化趋势是否符合预设标准（如是否从小变大，再从大变小），如果符合，那么认为该按压物体图像为指纹图像。Illustratively, when the finger is in contact with the fingerprint sensor, due to the special shape of the finger, 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) is uncertain and is difficult to form close to an elliptical or semi-elliptical shape. 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.
需要说明的是，为了进一步提高判断的准确性，防止误将掌纹图像判定为指纹图像，可将上述两种判断方法进行结合，当按压物体图像同时满足两种判断方法的判定条件时，则认为按压物体图像为指纹图像。例如，若按压物体图像的对比度达到预设标准，且按压物体图像的有效面积处于预设面积范围内时，确定按压物体图像为指纹图像。It should be noted that, in order to further improve the accuracy of the judgment and prevent the palmprint image from being mistakenly determined as a fingerprint image, 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.
示例性的，当判断按压物体图像为指纹图像时，可唤醒显示屏，即点亮显示屏。Exemplarily, 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.
本发明实施例一提供的基于指纹传感器的显示屏唤醒方法，当移动终端的显示屏处于休眠状态时，若监测到移动终端中配置的指纹传感器被按压，则通过指纹传感器获取按压物体图像；判断按压物体图像是否为指纹图像，根据判断结果确定是否唤醒显示屏。通过采用上述技术方案，当用户并非主动唤醒显示屏时，手掌等身体部位或其他可与指纹传感器形成电容的物体可能会按压到指纹传感器，此时，通过指纹传感器获取按压物体图像，并判断按压物体图像是否为指纹图像，再根据判断结果确定是否唤醒显示屏，可有效防止显示屏因误触发而被唤醒，可节省***功耗，从而延长待机时间，提升用户使用体验。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. By adopting the above technical solution, when the user does not actively wake up the display screen, 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.
实施例二Embodiment 2
图2为本发明实施例二提供的一种基于指纹传感器的显示屏唤醒方法的流程示意图。本实施例以上述实施例为基础，将“根据判断结果确定是否唤醒显示屏”进行优化：当判断结果为按压物体图像不为指纹图像时，保持显示屏处于休眠状态；当根据判断结果确定按压物体图像为指纹图像时，将指纹图像与预设指纹模板进行匹配，若匹配成功，则唤醒显示屏。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. Based on the above embodiment, 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.
具体的，本实施例的方法包括如下步骤：Specifically, the method in this embodiment includes the following steps:
步骤201、当移动终端的显示屏处于休眠状态时，若监测到移动终端中配置的指纹传感器被按压，则通过指纹传感器获取按压物体图像。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.
示例性的，通常情况下，移动终端处于休眠状态时，***和显示屏均处于休眠状态，而指纹传感器处于工作状态，可实时监测其是否被按压。当监测到指纹传感器被按压时，可产生中断信号，唤醒移动终端的***，但是不唤醒显示屏。***通过指纹传感器获取按压物体图像。Exemplarily, when the mobile terminal is in a sleep state, 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. When it is detected that the fingerprint sensor 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.
步骤202、判断按压物体图像的对比度是否达到预设标准。若是，则执行步骤203；否则，执行步骤207。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.
步骤203、判断按压物体图像的有效面积是否处于预设面积范围内。若是，则执行步骤204；否则，执行步骤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.
步骤204、确定按压物体图像为指纹图像，并将指纹图像与预设指纹模板进行匹配。Step 204: Determine that the pressed object image is a fingerprint image, and match the fingerprint image with the preset fingerprint template.
步骤205、判断匹配是否成功。若是，则执行步骤206；否则执行步骤207。Step 205: Determine whether the matching is successful. If yes, go to step 206; otherwise, go to step 207.
步骤206、唤醒显示屏。Step 206, wake up the display.
步骤207、保持显示屏处于休眠状态。Step 207: Keep the display screen in a sleep state.
示例性的，若指纹图像匹配失败，说明当前用户不具备使用该移动终端的权限，可在保持显示屏处于休眠状态的同时，使移动终端的***再次回到休眠状态。Exemplarily, if the fingerprint image fails to match, the current user does not have the right to use the mobile terminal, and the system of the mobile terminal can be returned to the sleep state while keeping the display screen in a sleep state.
示例性的，首次匹配失败还有可能是获取的指纹图像不准确，此时可在保持显示屏处于休眠状态的同时，发出振动提示，提醒用户继续使用手指按压指纹传感器，并再次获取指纹图像进行匹配。Exemplarily, the first matching failure may also be that the acquired fingerprint image is inaccurate. At this time, 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.
优选的，可设置匹配次数的第一阈值；若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因。例如3次，当连续3次匹配失败时，可唤醒显示屏，采用文字形式提示用户指纹匹配失败的原因，如用户手指姿势不正确或手指表面存在污物，请用户进行调整等；也可在保持显示屏处于休眠状态的同时，发出声音提示。还可设置匹配次数的第二阈值；若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。例如5次，当连续5次匹配失败时，可唤醒显示屏，并显示密码输入界面，提示用户通过输入密码来解锁移动终端。上述匹配次数的第一阈值和匹配次数的第二阈值可仅设置其中一个，也可均进行设置，具体可由***默认设置，或由用户根据个人习惯进行设置。Preferably, 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. For example, 5 times, when 5 consecutive matches fail, 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.
本发明实施例二提供的基于指纹传感器的显示屏唤醒方法，当判断出按压物体图像不是指纹图像时，保持显示屏处于休眠状态；当判断出按压物体图像为指纹图像时，暂时不唤醒显示屏，而是将指纹图像与预设指纹模板进行匹配，若匹配成功，再唤醒显示屏。在进行指纹匹配过程中，保持显示屏休眠，可进一步节省移动终端功耗。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. In the fingerprint matching process, keeping the display screen to sleep can further save the power consumption of the mobile terminal.
实施例三Embodiment 3
图3为本发明实施例三提供的一种基于指纹传感器的显示屏唤醒装置的结构框图。该装置可由软件和/或硬件实现，一般集成在移动终端中，可通过执行基于指纹传感器的显示屏唤醒方法来唤醒移动终端。如图3所示，该装置包括：按压物体图像获取模块301、指纹图像判断模块302和显示屏唤醒模块303。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. As shown in FIG. 3, the device includes: a pressed object image acquiring module 301, a fingerprint image determining module 302, and a display wake-up module 303.
其中，所述按压物体图像获取模块301，用于当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像。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.
所述指纹图像判断模块302，用于判断所述按压物体图像是否为指纹图像。The fingerprint image determining module 302 is configured to determine whether the pressed object image is a fingerprint image.
所述显示屏唤醒模块303，用于根据指纹图像判断模块的判断结果确定是否唤醒所述显示屏。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.
在上述实施例的基础上，所述指纹图像判断模块302可包括对比度判断单元，用于判断所述按压物体图像的对比度是否达到预设标准，若是，则确定所述按压物体图像为指纹图像，若否，则确定所述按压物体图像不为指纹图像。On the basis of the foregoing embodiment, 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.
在上述实施例的基础上，所述对比度判断单元，可具体用于：计算所述按压物体图像中所有像素点的灰度值的平均值，当所述平均值小于预设平均值时，确定所述按压物体图像的对比度未达到预设标准；或者，计算所述按压物体图像中所有像素点的灰度值的方差值，当所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。On the basis of the above embodiment, 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.
在上述实施例的基础上，所述对比度判断单元，可具体用于：计算所述按压物体图像中所有像素点的灰度值的平均值和方差值，当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；或者当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。On the basis of the above embodiment, 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.
在上述实施例的基础上，所述指纹图像判断模块302包括有效面积判断单元，用于若所述按压物体图像的有效面积处于预设面积范围内，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。On the basis of the above embodiment, 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.
在上述实施例的基础上，所述有效面积判断单元，可具体用于：检测所述按压物体图像的有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符，若是，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。On the basis of the above embodiment, 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.
在上述实施例的基础上，所述显示屏唤醒模块303，可具体用于：当判断结果为所述按压物体图像不是指纹图像时，保持所述显示屏处于休眠状态。On the basis of the foregoing embodiment, 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.
在上述实施例的基础上，所述显示屏唤醒模块303，包括匹配单元和唤醒单元。其中，所述匹配单元，用于当根据判断结果确定所述按压物体图像为指纹图像时，将所述指纹图像与预设指纹模板进行匹配；所述唤醒单元，用于若匹配成功，则唤醒所述显示屏。Based on the foregoing embodiment, 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.
在上述实施例的基础上，所述匹配单元，可具体用于：若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因；或者若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。On the basis of the foregoing embodiment, 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.
实施例四Embodiment 4
本实施例四提供了一种移动终端，该移动终端包括本发明实施例中所述的基于指纹传感器的显示屏唤醒装置，可通过执行基于指纹传感器的显示屏唤醒方法来唤醒显示屏。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.
示例性的，本实施例中的移动终端具体可为配置有指纹传感器的手机、智能手表、平板电脑和笔记本电脑等设备。优选为智能手机。其中，所述指纹传感器与所述基于指纹传感器的显示屏唤醒装置耦合。Exemplarily, 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.
用户在使用本实施例中的移动终端过程中，若不小心使手掌等身体部位或其他可与指纹传感器形成电容的物体按压到指纹传感器，该移动终端可通过指纹传感器获取按压物体图像，并判断按压物体图像是否为指纹图像，再根据判断结果确定是否唤醒显示屏，可有效防止显示屏因误触发而被唤醒，可节省***功耗，从而延长待机时间，提升用户使用体验。When the user uses the mobile terminal in this embodiment, if the body part such as the palm or other object capable of forming a capacitance with the fingerprint sensor is inadvertently pressed to the fingerprint sensor, 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.
上述产品可执行本发明任意实施例所提供的方法，具备执行方法相应的功能模块和有益效果。未在本实施例中详尽描述的技术细节，可参见本发明任意实施例所提供的方法。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. For technical details not fully described in this embodiment, reference may be made to the method provided by any embodiment of the present invention.
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。Note that the above are only the preferred embodiments of the present invention and the technical principles applied thereto. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various modifications, changes and substitutions may be made without departing from the scope of the invention. Therefore, the present invention has been described in detail by the above embodiments, but the present invention is not limited to the above embodiments, and other equivalent embodiments may be included without departing from the inventive concept. The scope is determined by the scope of the appended claims.

Claims (20)

  1. 一种基于指纹传感器的显示屏唤醒方法，其包括： A fingerprint sensor based display wake-up method includes:
    当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
    判断所述按压物体图像是否为指纹图像，根据判断结果确定是否唤醒所述显示屏。Determining whether the pressed object image is a fingerprint image, and determining whether to wake up the display screen according to the determination result.
  2. 根据权利要求1所述的方法，其中所述判断所述按压物体图像是否为指纹图像，包括：The method according to claim 1, wherein the determining whether the pressed object image is a fingerprint image comprises:
    判断所述按压物体图像的对比度是否达到预设标准，若是，则确定所述按压物体图像为指纹图像，若否，则确定所述按压物体图像不为指纹图像。Determining whether the contrast of the pressed object image reaches a preset standard, and if yes, determining that the pressed object image is a fingerprint image, and if not, determining that the pressed object image is not a fingerprint image.
  3. 根据权利要求2所述的方法，其中所述判断所述按压物体图像的对比度是否达到预设标准，包括：The method of claim 2, wherein the determining whether the contrast of the pressed object image reaches a preset criterion comprises:
    计算所述按压物体图像中所有像素点的灰度值的平均值，当所述平均值小于预设平均值时，确定所述按压物体图像的对比度未达到预设标准；或者，Calculating an average value of gray values of all pixel points in the pressed object image, and determining that a contrast of the pressed object image does not reach a preset standard when the average value is less than a preset average value; or
    计算所述按压物体图像中所有像素点的灰度值的方差值，当所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。Calculating a variance value of the gray value of all the pixels in the pressed object image, and when the variance value is less than the preset variance value, determining that the contrast of the pressed object image does not reach a preset criterion.
  4. 根据权利要求2所述的方法，其中所述判断所述按压物体图像的对比度是否达到预设标准，包括：The method of claim 2, wherein the determining whether the contrast of the pressed object image reaches a preset criterion comprises:
    计算所述按压物体图像中所有像素点的灰度值的平均值和方差值；当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；或者Calculating an average value and a variance value of gray values of all pixel points in the pressed object image; determining the pressing when the average value is less than a preset average value and the variance value is less than a preset variance value The contrast of the object image does not reach the preset standard; or
    当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。When 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.
  5. 根据权利要求1所述的方法，其中所述判断所述按压物体图像是否为指纹图像，包括：The method according to claim 1, wherein the determining whether the pressed object image is a fingerprint image comprises:
    若所述按压物体图像的有效面积处于预设面积范围内，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。If 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.
  6. 根据权利要求5所述的方法，其中若所述按压物体图像的有效面积处于预设面积范围内时，还包括：The method according to claim 5, wherein if the effective area of the pressed object image is within a preset area, the method further comprises:
    检测所述按压物体图像的有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符，若是，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。And detecting whether the effective area shape corresponding to the effective area of the pressed object image matches the effective area shape of the fingerprint image, and if yes, determining that the pressed object image is a fingerprint image; otherwise, determining that the pressed object image is not a fingerprint image.
  7. 根据权利要求1所述的方法，其中所述根据判断结果确定是否唤醒所述显示屏，包括：The method of claim 1, wherein the determining whether to wake up the display screen based on the result of the determination comprises:
    当判断结果为所述按压物体图像不为指纹图像时，保持所述显示屏处于休眠状态。When the result of the determination is that the pressed object image is not a fingerprint image, the display screen is kept in a sleep state.
  8. 根据权利要求7所述的方法，其中所述保持所述显示屏处于休眠状态的同时，还包括：The method of claim 7, wherein the maintaining the display screen while in a sleep state further comprises:
    发出振动提示。Give a vibrating alert.
  9. 根据权利要求1所述的方法，其中所述根据判断结果确定是否唤醒显示屏，包括：The method according to claim 1, wherein said determining whether to wake up the display according to the result of the judgment comprises:
    当根据判断结果确定所述按压物体图像为指纹图像时，将所述指纹图像与预设指纹模板进行匹配；When it is determined that the pressed object image is a fingerprint image according to the determination result, the fingerprint image is matched with the preset fingerprint template;
    若匹配成功，则唤醒所述显示屏。If the match is successful, the display is woken up.
  10. 根据权利要求9所述的方法，其中所述将所述指纹图像与预设指纹模板进行匹配，包括：The method of claim 9, wherein the matching the fingerprint image with a preset fingerprint template comprises:
    若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因；或者If the number of matching failures reaches the first threshold, the display screen is woken up and the reason for the matching failure is displayed; or
    若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。If the number of matching failures reaches the second threshold, the display screen is awakened and a password input interface is displayed.
  11. 一种基于指纹传感器的显示屏唤醒装置，其包括： A fingerprint sensor-based display wake-up device includes:
    按压物体图像获取模块，用于当移动终端的显示屏处于休眠状态时，若监测到所述移动终端中配置的指纹传感器被按压，则通过所述指纹传感器获取按压物体图像；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;
    指纹图像判断模块，用于判断所述按压物体图像是否为指纹图像；a fingerprint image determining module, configured to determine whether the pressed object image is a fingerprint image;
    显示屏唤醒模块，用于根据指纹图像判断模块的判断结果确定是否唤醒所述显示屏。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.
  12. 根据权利要求11所述的装置，其中所述指纹图像判断模块包括：The apparatus according to claim 11, wherein said fingerprint image determining module comprises:
    对比度判断单元，用于判断所述按压物体图像的对比度是否达到预设标准，若是，则确定所述按压物体图像为指纹图像，若否，则确定所述按压物体图像不为指纹图像。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.
  13. 根据权利要求12所述的装置，其中所述对比度判断单元，具体用于：The apparatus according to claim 12, wherein said contrast determining unit is specifically configured to:
    计算所述按压物体图像中所有像素点的灰度值的平均值，当所述平均值小于预设平均值时，确定所述按压物体图像的对比度未达到预设标准；或者，Calculating an average value of gray values of all pixel points in the pressed object image, and determining that a contrast of the pressed object image does not reach a preset standard when the average value is less than a preset average value; or
    计算所述按压物体图像中所有像素点的灰度值的方差值，当所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。Calculating a variance value of the gray value of all the pixels in the pressed object image, and when the variance value is less than the preset variance value, determining that the contrast of the pressed object image does not reach a preset criterion.
  14. 根据权利要求12所述的装置，其中所述对比度判断单元，具体用于：The apparatus according to claim 12, wherein said contrast determining unit is specifically configured to:
    计算所述按压物体图像中所有像素点的灰度值的平均值和方差值，当所述平均值小于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准；或者Calculating an average value and a variance value of the gray values of all the pixels in the pressed object image, and determining the pressing when the average value is less than a preset average value and the variance value is less than a preset variance value The contrast of the object image does not reach the preset standard; or
    当所述平均值大于预设平均值以及所述方差值小于预设方差值时，确定所述按压物体图像的对比度未达到预设标准。When 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.
  15. 根据权利要求11所述的装置，其中所述指纹图像判断模块包括：The apparatus according to claim 11, wherein said fingerprint image determining module comprises:
    有效面积判断单元，用于若所述按压物体图像的有效面积处于预设面积范围内，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。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.
  16. 根据权利要求15所述的装置，其中所述有效面积判断单元，具体用于：The apparatus according to claim 15, wherein said effective area determining unit is specifically configured to:
    检测所述按压物体图像的有效面积对应的有效区域形状是否与指纹图像的有效区域形状相符，若是，则确定所述按压物体图像为指纹图像，否则，确定所述按压物体图像不为指纹图像。And detecting whether the effective area shape corresponding to the effective area of the pressed object image matches the effective area shape of the fingerprint image, and if yes, determining that the pressed object image is a fingerprint image; otherwise, determining that the pressed object image is not a fingerprint image.
  17. 根据权利要求11所述的装置，其中所述显示屏唤醒模块，具体用于：The device according to claim 11, wherein the display wake-up module is specifically configured to:
    当判断结果为所述按压物体图像不为指纹图像时，保持所述显示屏处于休眠状态。When the result of the determination is that the pressed object image is not a fingerprint image, the display screen is kept in a sleep state.
  18. 根据权利要求11所述的装置，其中所述显示屏唤醒模块，包括：The device of claim 11, wherein the display wake-up module comprises:
    匹配单元，用于当根据判断结果确定所述按压物体图像为指纹图像时，将所述指纹图像与预设指纹模板进行匹配；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;
    唤醒单元，用于若匹配成功，则唤醒所述显示屏。The wake-up unit is configured to wake up the display if the matching is successful.
  19. 根据权利要求18所述的装置，其中所述匹配单元，具体用于：The device according to claim 18, wherein the matching unit is specifically configured to:
    若匹配失败的匹配次数达到第一阈值时，则唤醒所述显示屏，并显示匹配失败的原因；或者If the number of matching failures reaches the first threshold, the display screen is woken up and the reason for the matching failure is displayed; or
    若匹配失败的匹配次数达到第二阈值时，则唤醒所述显示屏，并显示密码输入界面。If the number of matching failures reaches the second threshold, the display screen is awakened and a password input interface is displayed.
  20. 一种移动终端，其包括指纹传感器，以及权利要求11-19任一项所述的基于指纹传感器的显示屏唤醒装置，其中，所述指纹传感器与所述基于指纹传感器的显示屏唤醒装置耦合。A mobile terminal comprising a fingerprint sensor, and the fingerprint sensor based display wake-up device of any of claims 11-19, wherein the fingerprint sensor is coupled to the fingerprint sensor based display wake-up device.
PCT/CN2016/093738 2015-10-19 2016-08-05 Fingerprint sensor-based display screen wake-up method, apparatus, and mobile terminal WO2017067280A1 (en)

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