CN107229544B - Screen detection method and related product - Google Patents

Screen detection method and related product Download PDF

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Publication number
CN107229544B
CN107229544B CN201710343004.3A CN201710343004A CN107229544B CN 107229544 B CN107229544 B CN 107229544B CN 201710343004 A CN201710343004 A CN 201710343004A CN 107229544 B CN107229544 B CN 107229544B
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display screen
fingerprint image
fingerprint
touch display
mobile terminal
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CN107229544A (en
Inventor
周意保
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2221Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test input/output devices or peripheral units

Abstract

The embodiment of the invention relates to the technical field of mobile terminals, and discloses a screen detection method and a related product. The method comprises the steps that a fingerprint identification area of a fingerprint identification device of the mobile terminal is located in a first area of a touch display screen, an AP of the mobile terminal constructs a fingerprint image according to fingerprint data acquired by the fingerprint identification device, and if interference noise exists in the fingerprint image, the interference noise can be presumed to be caused by damage of the touch display screen due to the fact that the fingerprint identification area is located in the area of the touch display screen; in this case, the AP notifies the flaw detection sensor to detect the touch display screen to determine whether the touch display screen is damaged. Therefore, the mobile terminal can find the damage of the touch display screen as soon as possible through the analysis of the fingerprint image, and then can optimize the fingerprint image according to the damage condition of the touch display screen.

Description

Screen detection method and related product
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a screen detection method and a related product.
Background
With the development of mobile terminal technology, mobile terminals having touch display screens have become increasingly popular. Compared with a mobile terminal only provided with a keyboard, the mobile terminal with the touch display screen enables a user to operate contents displayed on the screen more freely, and improves the interactivity and the convenience of use of the mobile terminal.
However, the user often holds the mobile terminal and the key in a pocket at the same time, or carelessly drops the mobile terminal during use, and in such a case, the touch display screen of the mobile terminal is often damaged, for example, cracks, holes, scratches and the like are generated on the surface glass of the touch display screen.
The damage of the touch display screen not only influences a user to check the content displayed on the touch display screen, but also can cause accidental injuries such as scratches. Therefore, how to detect the damage of the screen in time becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention provides a screen detection method and a related product, and aims to provide a screen detection method of a mobile terminal with a fingerprint identification area located in a touch display screen.
In a first aspect, an embodiment of the present invention provides a mobile terminal, including an application processor AP, a touch display screen, a fingerprint identification device, and a flaw detection sensor, where a fingerprint identification area of the fingerprint identification device is located in a first area of the touch display screen, where,
the AP is used for: constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device; analyzing the fingerprint image to determine whether interference noise is present on the fingerprint image; under the condition that the interference noise exists on the fingerprint image, informing the flaw detection sensor to detect the touch display screen;
the flaw detection sensor is used for detecting the touch display screen so as to determine whether the touch display screen is damaged.
In a second aspect, an embodiment of the present invention provides a screen detection method, which is applied to a mobile terminal including an application processor AP, a touch display screen, a fingerprint identification device and a flaw detection sensor, where a fingerprint identification area of the fingerprint identification device is located in a first area of the touch display screen, and the method includes:
the mobile terminal constructs a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
the mobile terminal analyzes the fingerprint image through the AP to determine whether interference noise exists on the fingerprint image;
the mobile terminal informs the flaw detection sensor to detect the touch display screen under the condition that the interference noise exists on the fingerprint image through the AP;
the mobile terminal detects the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
In a third aspect, an embodiment of the present invention provides a mobile terminal, including: the system comprises an application processor AP, a touch display screen, a fingerprint identification device, a flaw detection sensor and a memory; the fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen;
the one or more programs are stored in the memory and configured to be executed by the AP, the programs including instructions for performing the following steps;
constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
analyzing, by the AP, the fingerprint image to determine whether interference noise is present on the fingerprint image;
under the condition that the interference noise exists on the fingerprint image through the AP, the flaw detection sensor is informed to detect the touch display screen;
and detecting the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
In a fourth aspect, an embodiment of the present invention provides a screen detection apparatus, where the apparatus has a function of implementing a behavior of a mobile terminal in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In a fifth aspect, the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer execute some or all of the steps described in any one of the methods in the second aspect.
In a sixth aspect, the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in any one of the methods according to the second aspect of the present invention. The computer program product may be a software installation package.
In the embodiment of the invention, the fingerprint identification area of the fingerprint identification device of the mobile terminal is positioned in the first area of the touch display screen, the AP of the mobile terminal constructs a fingerprint image according to the fingerprint data acquired by the fingerprint identification device, and if interference noise exists in the fingerprint image, the interference noise can be presumed to be from the damage of the touch display screen because the fingerprint identification area is positioned in the area of the touch display screen; in this case, the AP notifies the flaw detection sensor to detect the touch display screen to determine whether the touch display screen is damaged. Therefore, the mobile terminal can find the damage of the touch display screen as soon as possible through the analysis of the fingerprint image, and then can optimize the fingerprint image according to the damage condition of the touch display screen.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1A is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 1B is a schematic diagram of a first area and a second area according to an embodiment of the disclosure;
FIG. 1C is a schematic diagram of a pixel array of a fingerprint chip according to an embodiment of the present invention;
FIG. 1D is a schematic diagram of an interference noise on a fingerprint image according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another mobile terminal disclosed in the embodiment of the present invention;
FIG. 3 is a flowchart illustrating a screen detection method according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating another screen inspection method according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a screen detecting device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another mobile terminal disclosed in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, or apparatus.
The embodiment of the invention provides a screen detection method and a related product, and aims to provide a screen detection method of a mobile terminal with a fingerprint identification area located in a touch display screen.
The Mobile terminal according to the embodiment of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), a Mobile terminal (terminal), and the like, which have wireless communication functions. For convenience of description, the above-mentioned devices are collectively referred to as a mobile terminal. The following describes embodiments of the present invention in detail.
Referring to fig. 1A, fig. 1A is a schematic structural diagram of a mobile terminal 100 according to an embodiment of the present invention, where the mobile terminal 100 includes: the system comprises an application processor AP110, a touch display screen 120, a fingerprint identification device 130 and a flaw detection sensor 160, wherein the fingerprint identification device 130 is combined to the touch display screen 120, a fingerprint identification area of the fingerprint identification device 130 is located in a first area of the touch display screen 120, and the AP110 is connected with the touch display screen 120, the fingerprint identification device 130 and the flaw detection sensor 160 through a bus 150.
Referring to fig. 1B, fig. 1B is a schematic position diagram of a first region and a second region according to an embodiment of the disclosure. The first area is an area where the fingerprint identification area of the fingerprint identification device 130 is located. The first area may be any preset area of the touch display screen 120, and the preset area may be located on the upper left side (as shown in fig. 1B), the upper side, the lower side, the left side, and the right side of the touch display screen 120, which is not limited in the embodiment of the present invention.
And a second area may be an area where inspection sensor 160 is located, the second area not coinciding with the first area. The flaw detection sensor 160 may be used to detect whether the surface of the touch display screen 120 is flat, and whether cracks, scratches, holes, and the like exist. To facilitate detecting the entire touch display screen 120, the second area may be close to the edge area of the touch display screen 120 (as shown in fig. 1B, close to the lower edge of the touch display screen 120), so that the flaw detection sensor 160 may scan the entire touch display screen 120 through infrared light, ultrasonic waves, and the like.
The AP110 is configured to construct a fingerprint image according to the fingerprint data acquired by the fingerprint identification device 130.
As an alternative embodiment, the fingerprint recognition device 130 includes a fingerprint sensor, and the fingerprint sensor includes at least one of the following: optical fingerprint sensors, capacitive fingerprint sensors, ultrasonic fingerprint sensors, and the like.
When the fingerprint sensor is a capacitive fingerprint sensor, the principle of fingerprint image acquisition is that the interior of a fingerprint chip is composed of m x n arrayed pixel points. Referring to fig. 1C, fig. 1C is a schematic diagram of a pixel array of a fingerprint chip according to an embodiment of the present invention. Assume in fig. 1C that the array has 56 x 192, for a total of 10752 pixel values;
when a finger presses down the surface of the fingerprint module, a capacitance value is formed between each pixel point and the surface of the finger, the capacitance value can be different according to the difference of peaks and valleys of the fingerprint, and the finger peaks are close to the pixel points, and the finger valleys are far away. The fingerprint module can form an unevenness's three-dimensional face according to the capacitance value size of 10752 pixel points, through this three-dimensional face simulation fingerprint image.
If the fingerprint sensor is an optical fingerprint sensor, the specific representation form of the fingerprint identification device combined to the touch display screen may be, for example: the fingerprint identification device is integrated to in the touch-control display screen, user's fingerprint data is gathered to mobile terminal's fingerprint identification device based on aperture imaging principle, the wall between touch-control display screen's the touch-control screen and the display screen is provided with first aperture array layer, the drive circuit layer of display screen forms evenly distributed's aperture array when the printing, evenly distributed's aperture array on this drive circuit layer is as second aperture array layer, just the light trap in the first aperture array layer with the light trap one-to-one in the second aperture array layer, optics fingerprint Sensor includes charge-coupled device CCD array layer, CCD array layer is used for detecting and sees through the light on first aperture array layer with second aperture array layer.
If the fingerprint sensor is an ultrasonic fingerprint sensor, the specific representation form of the fingerprint identification device combined with the touch display screen may be, for example: the touch-control display screen's medial surface is provided with the vacuum detection cavity, a plurality of ultrasonic sensor of evenly having arranged in the vacuum detection cavity, ultrasonic sensor includes ultrasonic signal transmitter and ultrasonic signal receiver, and ultrasonic signal transmitter is used for launching specific frequency's signal and surveys user's fingerprint, and ultrasonic signal receiver is used for receiving the echo signal that reflects back. The working principle of the ultrasonic sensor is that the ultrasonic wave has the capacity of penetrating through materials, and echoes with different sizes are generated along with different materials (when the ultrasonic wave reaches the surfaces of different materials, the ultrasonic wave is absorbed, penetrated and reflected to different degrees), so that the positions of ridges and valleys of a fingerprint surface of a user can be distinguished.
The AP110 is further configured to analyze the fingerprint image to determine whether interference noise is present on the fingerprint image.
In the embodiment of the invention, interference noise may exist on the fingerprint image, and the interference noise can influence the identification speed and the accuracy of the fingerprint image. However, since the fingerprint recognition area of the fingerprint recognition device 130 is located in the area of the touch display screen 120 in the embodiment of the present invention, if the touch display screen is damaged, the interference noise may be caused by the damage (e.g., scratch, crack, hole, etc.) of the touch display screen.
As an alternative embodiment, it may be determined whether the interference trace exists in the same position relative to the fingerprint identification area in more than one fingerprint image acquired by the fingerprint identification device 130, so as to primarily determine whether the interference trace is caused by the damage of the touch display screen. Referring to fig. 1D, fig. 1D lists 3 fingerprint images, and in the 3 fingerprint images, the same interference traces exist at the same positions relative to the edge of the fingerprint identification area (in the figure, circles represent the edge of the fingerprint identification area), so it can be presumed that the interference traces are caused by the damage of the touch display screen.
On the other hand, if the interference traces are located at the same position with respect to the fingerprint images in the acquired plurality of fingerprint images, it should be inferred that the interference traces are caused by stains, damage, and the like on the user's finger, and are not caused by damage for the touch display screen.
The AP110 is further configured to notify the flaw detection sensor 160 to detect the touch display screen 120 when the interference noise exists in the fingerprint image.
The flaw detection sensor 160 is configured to detect the touch display screen 120, so as to determine whether the touch display screen 120 is damaged.
As an alternative implementation manner, the flaw detection sensor 160 may be an ultrasonic flaw detection sensor, an infrared flaw detection sensor, and the like, and specifically, what kind of sensor is used is not limited in the embodiment of the present invention.
When the flaw detection sensor 160 is an ultrasonic flaw detection sensor, the ultrasonic flaw detection sensor is disposed in the second area shown in fig. 1B, and thus, the ultrasonic waves emitted by the ultrasonic flaw detection sensor can scan the entire touch display screen 120, thereby determining whether the touch display screen 120 is damaged.
When the flaw detection sensor 160 is an ultrasonic flaw detection sensor, the ultrasonic flaw detection sensor can detect whether there is damage such as cracks, scratches, holes, etc. on the touch display screen 120 by using the characteristics of short ultrasonic wave, good directivity, and being not easy to diffract and generate obvious reflection when encountering impurities or interfaces.
As an alternative embodiment, the ultrasonic flaw detection sensor is disposed in the second area shown in fig. 1B, which is located below the touch display screen 120 and has an angle with the plane of the touch display screen 120, so that the ultrasonic waves emitted by the ultrasonic flaw detection sensor can scan the whole area of the touch display screen 120.
The ultrasonic flaw detection sensor has a probe in which a transmitter and a receiver are arranged. The transmitter transmits ultrasonic waves (transmitted waves T), the ultrasonic waves are transmitted inside the touch display screen 120 at a certain speed, one part of the ultrasonic waves are reflected (obtaining the notch F) when encountering the damaged part of the touch display screen 120, the other part of the ultrasonic waves are continuously transmitted to the topmost sub-interface of the touch display screen 120 and are also reflected (obtaining the bottom wave B), the receiver receives the notch F and the bottom wave B, and the characteristics of the damaged part can be obtained by analyzing the waveforms of the transmitted waves T, the notch F and the bottom wave B.
For example, the position of the damaged portion can be determined by analyzing the positions of the peaks of the emission wave T, the defect wave F, and the bottom wave B; analyzing the amplitude of the defect wave F to judge the size of the damaged part; from the shape of the defect wave F, the nature of the damaged portion can be judged. In combination with the position, size, and nature of the damaged portion, the damaged shape information of the touch display screen 120 may be obtained, and the shape information may be subsequently used to perform denoising processing on the fingerprint image.
When the flaw detection sensor 160 is an infrared flaw detection sensor, the infrared flaw detection sensor detects and determines the damage of the touch display screen 120 by using the principle that the thermal conductivity of the damaged portion and the undamaged portion of the touch display screen is different and the infrared radiation intensity is different.
As an alternative embodiment, the infrared flaw detection sensor has an infrared thermal imaging section, and the temperature field distribution (infrared thermal image) of the touch display screen 120 is monitored by the infrared thermal imaging section to determine whether the touch display screen 120 is damaged or not, and to determine the shape information of the damage.
It should be noted that the damage of the touch display screen also includes the damage of the screen protection film covering the surface of the touch display screen. In the case of damage to the screen protective film, the above-described interference trace may also be caused to the fingerprint image.
Therefore, the mobile terminal described in fig. 1A can find the damage of the touch display screen early through the analysis of the fingerprint image, and further can optimize the fingerprint image according to the damage condition of the touch display screen.
Referring to fig. 2, fig. 2 is a diagram of another mobile terminal 200 according to an embodiment of the present invention, including: the application processor AP110, the touch display screen 120, the fingerprint recognition device 130, the flaw detection sensor 160, and the memory 140; and one or more programs, wherein the fingerprint identification area of the fingerprint identification device is located in the first area of the touch display screen, and the AP110 is connected to the touch display screen 120, the fingerprint identification device 130 and the flaw detection sensor 160 through a bus 150.
The one or more programs are stored in the memory and configured to be executed by the AP, the programs including instructions for performing the following steps;
constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
analyzing, by the AP, the fingerprint image to determine whether interference noise is present on the fingerprint image;
under the condition that the interference noise exists on the fingerprint image through the AP, the flaw detection sensor is informed to detect the touch display screen;
as an alternative embodiment, it may be determined whether the interference trace exists in the same position relative to the fingerprint identification area in more than one fingerprint image acquired by the fingerprint identification device 130, so as to primarily determine whether the interference trace is caused by the damage of the touch display screen. Referring to fig. 1D, fig. 1D lists 3 fingerprint images, and in the 3 fingerprint images, the same interference traces exist at the same positions relative to the edge of the fingerprint identification area (in the figure, circles represent the edge of the fingerprint identification area), so it can be presumed that the interference traces are caused by the damage of the touch display screen.
And detecting the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
In one possible example, the program further comprises instructions for performing the following steps;
controlling the flaw detection sensor to inform the AP to perform denoising processing on the fingerprint image under the condition that the damage of the touch display screen is determined;
and denoising the fingerprint image through the AP.
In one possible example, the instructions in the program are specifically configured to perform, in respect of said notifying the AP to denoise the fingerprint image, the steps of:
controlling the flaw detection sensor to acquire damaged shape information of the touch display screen and sending the shape information to the AP;
in the aspect of denoising the fingerprint image, the instructions in the program are specifically configured to perform the following steps:
performing pattern recognition on interference noise on the fingerprint image through the AP according to the shape information to determine the edge of the interference noise; and deleting the pixel points in the area surrounded by the edge of the interference noise through the AP, and filling the area surrounded by the edge with the pixel points at the corresponding positions in the prestored fingerprint image.
In one possible example, in the analyzing the fingerprint image to determine whether there is interference noise on the fingerprint image, the instructions in the program are specifically for performing the steps of:
and comparing the fingerprint image acquired this time with more than one historical fingerprint image through the AP to determine whether interference noise exists in the same position of at least two images relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image.
In one possible example, the program further comprises instructions for performing the following steps;
and controlling the touch display screen to inform the fingerprint identification device to collect the fingerprint data of the user when detecting the touch operation of the finger of the user on the first area before the fingerprint identification device collects the fingerprint data.
Therefore, the mobile terminal depicted in fig. 2 can find the damage of the touch display screen early through the analysis of the fingerprint image; in addition, the fingerprint image can be subjected to noise removal processing according to the damaged shape information of the touch display screen (such as the shape of a crack of the surface glass of the touch display screen), so that the fingerprint image noise can be removed purposefully, and the identification speed and accuracy of the fingerprint image are improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a screen detection method according to an embodiment of the present invention. The method can be applied to a mobile terminal comprising an application processor AP, a touch display screen, a fingerprint identification device and a flaw detection sensor, wherein a fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen. As shown in fig. 3, the method may include the steps of:
301. and the mobile terminal constructs a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP.
302. And the mobile terminal analyzes the fingerprint image through the AP to determine whether interference noise exists on the fingerprint image.
303. And the mobile terminal informs the flaw detection sensor to detect the touch display screen under the condition that the interference noise exists on the fingerprint image through the AP.
304. The mobile terminal detects the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
As an alternative implementation manner, the flaw detection sensor may be an ultrasonic flaw detection sensor, an infrared flaw detection sensor, and the like, and specifically, which sensor is adopted is not limited in the embodiment of the present invention.
When the flaw detection sensor is an ultrasonic flaw detection sensor, the ultrasonic flaw detection sensor can detect whether the touch display screen has cracks, scratches, holes and other damages by utilizing the characteristics that ultrasonic wave is short in wavelength, good in directivity, not easy to diffract and capable of generating obvious reflection when encountering impurities or interfaces.
As an alternative embodiment, the ultrasonic flaw detection sensor is disposed in the second area shown in fig. 1B, and is located below the touch display screen and has an angle with the plane of the touch display screen, so that the ultrasonic waves emitted by the ultrasonic flaw detection sensor can scan the whole area of the touch display screen.
The ultrasonic flaw detection sensor has a probe in which a transmitter and a receiver are arranged. The transmitter transmits ultrasonic waves (transmitting waves T), the ultrasonic waves are transmitted in the touch display screen at a certain speed, one part of the ultrasonic waves are reflected (obtaining the defect wave F) when encountering the damaged part of the touch display screen, the other part of the ultrasonic waves are continuously transmitted to the interface at the topmost end of the touch display screen and are also reflected (obtaining the bottom wave B), the receiver receives the defect wave F and the bottom wave B, and the characteristics of the damaged part can be obtained by analyzing the waveforms of the transmitting waves T, the defect wave F and the bottom wave B.
For example, the position of the damaged portion can be determined by analyzing the positions of the peaks of the emission wave T, the defect wave F, and the bottom wave B; analyzing the amplitude of the defect wave F to judge the size of the damaged part; from the shape of the defect wave F, the nature of the damaged portion can be judged. And by combining the position, the size and the property of the damage part, damaged shape information of the touch display screen can be obtained, and the shape information can be subsequently used for denoising the fingerprint image.
When the flaw detection sensor is an infrared flaw detection sensor, the infrared flaw detection sensor finds and determines the damage of the touch display screen by utilizing the principle that the thermal conductivity of the damaged part and the thermal conductivity of the undamaged part of the touch display screen are different, so that the infrared radiation intensity of the damaged part and the undamaged part of the touch display screen are different.
As an alternative embodiment, the infrared flaw detection sensor has an infrared thermal imaging section, and the temperature field distribution (infrared thermal image) of the touch display screen is monitored by the infrared thermal imaging section to determine whether the touch display screen is damaged or not, and to determine the damaged shape information.
Therefore, by using the screen detection method described in fig. 3, the damage of the touch display screen can be discovered early through the analysis of the fingerprint image, and then the fingerprint image can be optimized according to the damage condition of the touch display screen.
Referring to fig. 4, fig. 4 is a schematic flow chart illustrating another screen inspection method according to an embodiment of the present invention. The method can be applied to a mobile terminal comprising an application processor AP, a touch display screen, a fingerprint identification device and a flaw detection sensor, wherein a fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen. As shown in fig. 4, the method may include the steps of:
401. and the mobile terminal constructs a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP.
As an optional implementation manner, before the fingerprint identification device collects the fingerprint data, the mobile terminal may control the touch display screen to notify the fingerprint identification device to collect the fingerprint data of the user when the touch operation of the finger of the user on the first area is detected.
402. And the mobile terminal analyzes the fingerprint image through the AP to determine whether interference noise exists on the fingerprint image.
As an optional implementation manner, the mobile terminal compares the fingerprint image acquired this time with more than one historical fingerprint image through the AP to determine whether there is interference noise in at least two images at the same position relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image.
403. And the mobile terminal informs the flaw detection sensor to detect the touch display screen under the condition that the interference noise exists on the fingerprint image through the AP.
As an optional implementation manner, it may be determined whether the interference trace exists in the same position relative to the fingerprint identification area in more than one fingerprint image acquired by the fingerprint identification device, so as to primarily determine whether the interference trace is caused by the damage of the touch display screen. Referring to fig. 1D, fig. 1D lists 3 fingerprint images, and in the 3 fingerprint images, the same interference traces exist at the same positions relative to the edge of the fingerprint identification area (in the figure, circles represent the edge of the fingerprint identification area), so it can be presumed that the interference traces are caused by the damage of the touch display screen.
404. The mobile terminal detects the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
405. And the mobile terminal controls the flaw detection sensor to inform the AP to perform denoising processing on the fingerprint image under the condition that the damage of the touch display screen is determined.
406. And the mobile terminal performs denoising processing on the fingerprint image through the AP.
As an optional implementation manner, when the flaw detection sensor notifies the AP to perform denoising processing on the fingerprint image, the shape information of the damaged touch display screen may be acquired, and the shape information is sent to the AP.
The AP may remove the interference noise of the fingerprint image by: performing pattern recognition on interference noise on the fingerprint image according to shape information sent by a flaw detection sensor to determine the edge of the interference noise; and then deleting the pixel points in the area surrounded by the edge of the interference noise, and filling the area surrounded by the edge with the pixel points at the corresponding positions in the prestored fingerprint image.
Therefore, by using the screen detection method described in fig. 4, the damage of the touch display screen can be discovered early through the analysis of the fingerprint image; in addition, the fingerprint image can be subjected to noise removal processing according to the damaged shape information of the touch display screen (such as the shape of a crack of the surface glass of the touch display screen), so that the fingerprint image noise can be removed purposefully, and the identification speed and accuracy of the fingerprint image are improved.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a screen detecting device 500 according to an embodiment of the present invention. The screen detecting apparatus 500 may be applied to a mobile terminal including an application processor AP, a touch display screen, a fingerprint recognition apparatus having a fingerprint recognition area located in a first area of the touch display screen, and a flaw detection sensor. The screen detecting apparatus 500 may include, among other things, a construction unit 510, a first determination unit 520, a notification unit 530, and a second determination unit 540, wherein,
the constructing unit 510 is configured to construct a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
the first determining unit 520, configured to analyze the fingerprint image through the AP to determine whether interference noise exists on the fingerprint image;
the notifying unit 530 is configured to notify, through the AP, the flaw detection sensor to detect the touch display screen when the interference noise exists in the fingerprint image;
the second determining unit 540 is configured to detect the touch display screen through the flaw detection sensor to determine whether the touch display screen is damaged.
Therefore, by using the screen detection device described in fig. 5, the damage of the touch display screen can be discovered early through the analysis of the fingerprint image, and then the fingerprint image can be optimized according to the damage condition of the touch display screen.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another mobile terminal 600 according to an embodiment of the disclosure. As shown in fig. 6, for convenience of illustration, only the portion related to the embodiment of the present invention is shown, and details of the technique are not disclosed, please refer to the method portion of the embodiment of the present invention. The terminal may be any mobile terminal including a mobile phone, a tablet computer, a PDA (Personal digital assistant), a POS (Point of Sales), a vehicle-mounted computer, etc., taking the mobile terminal as a mobile phone as an example:
fig. 6 is a block diagram illustrating a partial structure of a mobile phone related to a mobile terminal according to an embodiment of the present invention. Referring to fig. 6, the handset includes: a Radio Frequency (RF) circuit 601, a memory 602, an input unit 603, a display unit 604, a sensor 605, an audio circuit 606, a wireless fidelity (WiFi) module 607, a processor 608, and a power supply 609. Those skilled in the art will appreciate that the handset configuration shown in fig. 6 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile phone in detail with reference to fig. 6:
the RF circuit 601 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 608; in addition, the data for designing uplink is transmitted to the base station. In general, the RF circuit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 601 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.
The memory 602 may be used to store software programs and modules, and the processor 608 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 602. The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 603 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 603 may include a touch panel 6031 and other input devices 6032. The touch panel 6031, also referred to as a touch screen, may collect touch operations of a user on or near the touch panel 6031 (e.g., operations of a user on or near the touch panel 6031 using any suitable object or accessory such as a finger, a stylus, etc.) and drive corresponding connection devices according to a preset program. Alternatively, the touch panel 6031 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 608, and can receive and execute commands sent by the processor 608. In addition, the touch panel 6031 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 603 may include other input devices 6032 in addition to the touch panel 6031. In particular, other input devices 6032 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 604 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The display unit 604 may include a display panel 6041, and the display panel 6041 may be configured by using a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 6031 can cover the display panel 6041, and when the touch panel 6031 detects a touch operation on or near the touch panel 6031, the touch operation can be transmitted to the processor 608 to determine the type of the touch event, and then the processor 608 can provide a corresponding visual output on the display panel 6041 according to the type of the touch event. Although in fig. 6, the touch panel 6031 and the display panel 6041 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 6031 and the display panel 6041 may be integrated to implement the input and output functions of the mobile phone.
The handset may also include at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 6041 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 6041 and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
Audio circuitry 606, speaker 6061, and microphone 6062 may provide an audio interface between the user and the handset. The audio circuit 606 may transmit the electrical signal converted from the received audio data to the speaker 6061, and convert the electrical signal into a sound signal by the speaker 6061 and output the sound signal; on the other hand, the microphone 6062 converts a collected sound signal into an electric signal, receives the electric signal by the audio circuit 606, converts the electric signal into audio data, and outputs the audio data to the processor 608 for processing, and then transmits the audio data to, for example, another cellular phone via the RF circuit 601, or outputs the audio data to the memory 602 for further processing.
WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 607, and provides wireless broadband internet access for the user. Although fig. 6 shows the WiFi module 607, it is understood that it does not belong to the essential constitution of the handset, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 608 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 602 and calling data stored in the memory 602, thereby performing overall monitoring of the mobile phone. Alternatively, processor 608 may include one or more processing units; preferably, the processor 608 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 608. In an embodiment of the invention, the processor 608 may serve as the application processor AP.
The handset also includes a power supply 609 (e.g., a battery) for powering the various components, which may preferably be logically connected to the processor 608 via a power management system, such that the power management system may be used to manage charging, discharging, and power consumption.
Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.
In the foregoing embodiment, the method flows of the steps may be implemented based on the structure of the mobile terminal. Where both the application layer and the operating system kernel can be viewed as components of the abstract structure of processor 608. An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the unlocking control methods described in the above method embodiments.
Embodiments of the present invention also provide a computer program product including a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform part or all of the steps of any one of the unlock control methods as recited in the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments shown in fig. 3 to fig. 4, the method flows of the steps may be implemented based on the structure of the mobile phone.
In the embodiment shown in fig. 5, the functions of the units can be implemented based on the structure of the mobile phone.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.
The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (15)

1. A mobile terminal comprises an application processor AP, a touch display screen and a fingerprint identification device, and is characterized in that the mobile terminal also comprises a flaw detection sensor, a fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen, wherein,
the AP is used for: constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device; analyzing the fingerprint image to determine whether interference noise is present on the fingerprint image; and under the condition that the interference noise exists in the fingerprint image, informing the flaw detection sensor to detect the touch display screen, wherein the AP is specifically used for: comparing the fingerprint image acquired this time with more than one historical fingerprint image to determine whether interference noise exists in the same position of at least two images relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image; when interference noise exists in the same position of at least two images relative to the fingerprint identification area, informing the flaw detection sensor to detect the touch display screen;
the flaw detection sensor is used for detecting the touch display screen so as to determine whether the touch display screen is damaged.
2. The mobile terminal of claim 1,
the flaw detection sensor is further used for informing the AP to perform denoising processing on the fingerprint image under the condition that the damage of the touch display screen is determined;
and the AP is also used for denoising the fingerprint image.
3. The mobile terminal according to claim 2, wherein said AP is informed of a denoising aspect of said fingerprint image, and wherein said flaw detection sensor is specifically configured to:
acquiring damaged shape information of the touch display screen, and sending the shape information to the AP;
in the aspect of denoising the fingerprint image, the AP is specifically configured to:
performing pattern recognition on interference noise on the fingerprint image according to the shape information to determine the edge of the interference noise;
and deleting the pixel points in the area surrounded by the edge of the interference noise, and filling the area surrounded by the edge with the pixel points at the corresponding positions in the prestored fingerprint image.
4. The mobile terminal of claim 1,
the touch display screen is used for informing the fingerprint identification device to collect the fingerprint data of the user when detecting the touch operation of the finger of the user on the first area before the fingerprint identification device collects the fingerprint data.
5. A screen detection method is applied to a mobile terminal comprising an application processor AP, a touch display screen, a fingerprint identification device and a flaw detection sensor, wherein a fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen, and the method comprises the following steps:
the mobile terminal constructs a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
the mobile terminal analyzes the fingerprint image through the AP to determine whether interference noise exists on the fingerprint image, wherein the analyzing the fingerprint image to determine whether interference noise exists on the fingerprint image includes:
the mobile terminal compares the fingerprint image acquired this time with more than one historical fingerprint image through the AP to determine whether interference noise exists in the same position of at least two images relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image; when interference noise exists in the same position of at least two images relative to the fingerprint identification area, informing the flaw detection sensor to detect the touch display screen;
the mobile terminal informs the flaw detection sensor to detect the touch display screen under the condition that the interference noise exists on the fingerprint image through the AP;
the mobile terminal detects the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
6. The method of claim 5, further comprising:
the mobile terminal controls the flaw detection sensor to inform the AP to perform denoising processing on the fingerprint image under the condition that the damage of the touch display screen is determined;
and the mobile terminal performs denoising processing on the fingerprint image through the AP.
7. The method of claim 6, wherein the notifying the AP to denoise the fingerprint image comprises:
the mobile terminal controls the flaw detection sensor to acquire damaged shape information of the touch display screen and sends the shape information to the AP;
the denoising processing of the fingerprint image includes:
the mobile terminal carries out mode identification on the interference noise on the fingerprint image through the AP according to the shape information so as to determine the edge of the interference noise;
and the mobile terminal deletes the pixel points in the area surrounded by the edge of the interference noise through the AP, and fills the area surrounded by the edge by utilizing the pixel points at the corresponding positions in the prestored fingerprint image.
8. The method of claim 5, further comprising:
the mobile terminal controls the touch display screen to inform the fingerprint identification device of collecting the fingerprint data of the user when detecting the touch operation of the finger of the user aiming at the first area before the fingerprint identification device collects the fingerprint data.
9. A mobile terminal, comprising: the system comprises an application processor AP, a touch display screen, a fingerprint identification device, a flaw detection sensor and a memory; the fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen;
the one or more programs are stored in the memory and configured to be executed by the AP, the programs including instructions for performing the following steps;
constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
analyzing, by the AP, the fingerprint image to determine whether interference noise is present on the fingerprint image, in terms of analyzing the fingerprint image to determine whether interference noise is present on the fingerprint image, the instructions in the program being specifically configured to perform the steps of:
comparing the fingerprint image acquired this time with more than one historical fingerprint image through the AP to determine whether interference noise exists in the same position of at least two images relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image; when interference noise exists in the same position of at least two images relative to the fingerprint identification area, informing the flaw detection sensor to detect the touch display screen;
under the condition that the interference noise exists on the fingerprint image through the AP, the flaw detection sensor is informed to detect the touch display screen;
and detecting the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
10. The mobile terminal of claim 9, wherein the program further comprises instructions for performing the following steps;
controlling the flaw detection sensor to inform the AP to perform denoising processing on the fingerprint image under the condition that the damage of the touch display screen is determined;
and denoising the fingerprint image through the AP.
11. The mobile terminal of claim 10, wherein in notifying the AP of denoising the fingerprint image, the instructions in the program are specifically configured to perform the following steps:
controlling the flaw detection sensor to acquire damaged shape information of the touch display screen and sending the shape information to the AP;
in the aspect of denoising the fingerprint image, the instructions in the program are specifically configured to perform the following steps: performing pattern recognition on interference noise on the fingerprint image through the AP according to the shape information to determine the edge of the interference noise; and deleting the pixel points in the area surrounded by the edge of the interference noise through the AP, and filling the area surrounded by the edge with the pixel points at the corresponding positions in the prestored fingerprint image.
12. The mobile terminal of claim 9, wherein the program further comprises instructions for performing the following steps;
and controlling the touch display screen to inform the fingerprint identification device to collect the fingerprint data of the user when detecting the touch operation of the finger of the user on the first area before the fingerprint identification device collects the fingerprint data.
13. A screen detection device is applied to a mobile terminal comprising an application processor AP, a touch display screen, a fingerprint identification device and a flaw detection sensor, wherein a fingerprint identification area of the fingerprint identification device is positioned in a first area of the touch display screen, the screen detection device comprises a construction unit, a first determination unit, a notification unit and a second determination unit, wherein,
the construction unit is used for constructing a fingerprint image according to the fingerprint data acquired by the fingerprint identification device through the AP;
the first determining unit is configured to analyze the fingerprint image through the AP to determine whether interference noise exists in the fingerprint image, and the first determining unit is specifically configured to: comparing the fingerprint image acquired this time with more than one historical fingerprint image to determine whether interference noise exists in the same position of at least two images relative to the fingerprint identification area in the fingerprint image and the more than one historical fingerprint image; when interference noise exists in the same position of at least two images relative to the fingerprint identification area, informing the flaw detection sensor to detect the touch display screen;
the notification unit is used for notifying the flaw detection sensor to detect the touch display screen through the AP under the condition that the interference noise exists on the fingerprint image;
the second determination unit is used for detecting the touch display screen through the flaw detection sensor so as to determine whether the touch display screen is damaged.
14. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to claims 5-8.
15. A computer program product, characterized in that the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform the method according to any of claims 5-8.
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