Fingerprint collection method, electronic device and storage medium

Abstract

The embodiment of the present application provides a fingerprint collection method, an electronic device and a storage medium, the method comprising: obtaining a trigger signal; responding to the trigger signal, clearing the accumulated charge of a fingerprint collector and executing a fingerprint collection process at the same time, the fingerprint collection process comprising: controlling the display of prompt information on a display touch screen and collecting a fingerprint image; if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector can collect a valid fingerprint image when executing the collection of the fingerprint image.

Description

Technical Field

[0001] The present invention relates to communication technology, and in particular to a fingerprint collection method, electronic equipment and storage medium. Background Art

[0002] In related technologies, full-screen or half-screen fingerprint technology (Finger-on-Display, FoD) adopts a thin-film transistor (TFT) process. This process has the problem of charge accumulation. The residual charge needs to be cleared before each fingerprint capture. The entire clearing process takes more than 100 milliseconds (ms), which has a greater impact on the fingerprint response time. Summary of the invention

[0003] In view of this, the embodiments of the present invention provide a fingerprint collection method, an electronic device and a storage medium to solve the problems existing in the prior art.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The present application embodiment provides a fingerprint collection method, including:

[0006] Get a trigger signal;

[0007] In response to the trigger signal, the accumulated charge of the fingerprint collector is cleared and a fingerprint collection process is executed at the same time, wherein the fingerprint collection process includes: controlling the display of prompt information on the display touch screen and collecting a fingerprint image;

[0008] If the clearing of the accumulated charge of the fingerprint collector is completed, so that the fingerprint collector can collect a valid fingerprint image when performing the collection of the fingerprint image.

[0009] An embodiment of the present application provides an electronic device, including:

[0010] Display touch screen;

[0011] A fingerprint collector is located below the display touch screen, and the collection area of ​​the fingerprint collector corresponds to at least a part of the display area of ​​the display touch screen;

[0012] The processor is used to obtain a trigger signal; in response to the trigger signal, control the display of prompt information on the display touch screen, clear the accumulated charge of the fingerprint collector, and collect fingerprint images; wherein, if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector can collect a valid fingerprint image when executing the collection of fingerprint images.

[0013] Correspondingly, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned fingerprint collection method are implemented.

[0014] The embodiments of the present application provide a fingerprint collection method, an electronic device and a storage medium, which trigger the clearing of the accumulated charge of a fingerprint collector and the fingerprint collection process in parallel in response to an obtained trigger signal; if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector has the ability to collect a valid fingerprint image; in this way, after the trigger signal is obtained, the accumulated charge of the fingerprint collector is cleared and the fingerprint collection process is executed at the same time, thereby reducing the delay caused by clearing the accumulated charge and speeding up the fingerprint collection response time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the accompanying drawings (which are not necessarily drawn to scale), like reference numerals may describe similar components in different views. Like reference numerals with different letter suffixes may represent different examples of similar components. The accompanying drawings generally illustrate various embodiments discussed herein by way of example and not limitation.

[0016] Figure 1 This is a schematic diagram of the implementation process of the fingerprint collection method of the embodiment of the present application;

[0017] Figure 2 An interactive diagram for implementing the fingerprint collection method provided in an embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of the implementation process of the fingerprint collection method of the embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the implementation process of the fingerprint collection method of the embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the composition structure of the electronic device described in the embodiment of the present application. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0023] The electronic device may be implemented in various forms. For example, the electronic device described in this application may include mobile electronic devices such as personal digital assistants (PDAs), navigation devices, wearable devices, and fixed electronic devices such as digital TVs and desktop computers that can perform fingerprint collection.

[0024] The following description will be made by taking mobile electronic devices as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type electronic devices.

[0025] This embodiment provides a fingerprint collection method. Figure 1 This is a schematic diagram of the implementation flow of the fingerprint collection method of the present application embodiment, combined with Figure 1 The steps shown are explained below:

[0026] Step S101, obtaining a trigger signal.

[0027] Here, step S101 may be executed by the processor of the device, that is, the processor obtains a trigger signal. The trigger signal may be formed by a touch operation inputted through the touch screen, or may be formed based on a logical instruction. For example, a finger touches the touch interface to form a trigger signal, or the terminal predicts the need for fingerprint collection at the next moment based on the logical instruction, thereby forming a trigger signal.

[0028] Step S102, in response to the trigger signal, clearing the accumulated charge of the fingerprint collector and executing the fingerprint collection process.

[0029] Here, step S102 may be performed by the device's processor controlling the fingerprint collector. The processor obtains a trigger signal, controls the clearing of the accumulated charge of the fingerprint collector, and simultaneously executes the fingerprint collection process. In a specific example, the processor obtains a trigger signal, controls the fingerprint collector to clear the accumulated charge, and simultaneously controls the display screen to display a prompt message.

[0030] In some possible implementations, the trigger signal includes one of the following options: a call instruction for calling the fingerprint collector; for example, the processor detects that a fingerprint collection operation is to be performed, and sends a call instruction to the fingerprint collector to trigger the fingerprint collector to clear the charge. Or, it is a control instruction for lighting up the display touch screen; for example, when the display touch screen of the electronic device is lit, a control instruction is generated to control the fingerprint collector to clear the charge. Among them, the fingerprint collection process includes: controlling the display of prompt information on the display touch screen and collecting fingerprint images. The prompt information includes displaying the collection area of ​​the fingerprint collector, such as a half-screen area or a full-screen area on the display touch screen where fingerprint collection can be performed, to prompt the user to input the fingerprint in this area. Among them, clearing the accumulated charge of the fingerprint collector and executing the fingerprint collection process at the same time can be understood as clearing the accumulated charge of the fingerprint collector and executing the fingerprint collection process are triggered in parallel, for example, while triggering the clearing of the accumulated charge of the fingerprint collector, the execution of the fingerprint collection process is triggered by a synchronization signal.

[0031] In some possible implementations, the fingerprint collector may be made using a thin film transistor process, and the collection area of ​​the fingerprint collector corresponds to the full screen or half screen of the touch display screen, so that fingerprint collection can be achieved at any position of the full screen touch area or half screen touch area of ​​the touch display screen. Since the glass substrate of the fingerprint collector is made using the TFT process, the charge transfer speed of the fingerprint collector is slow, which will cause charge accumulation in the collection area. In some embodiments, the fingerprint collector includes a TFT glass substrate and a photodiode array arranged on the TFT substrate; the process of the user's finger touching the screen of the fingerprint collector requires the screen to light up, light to shine on the finger, and reflective light to be generated. The reflected light shines on the photodiode array, and the photodiode converts the optical signal into an electrical signal, thereby realizing fingerprint collection.

[0032] Step S103: if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector can collect a valid fingerprint image when collecting the fingerprint image.

[0033] Here, the completion of clearing the accumulated charge of the fingerprint collector indicates that at least the charge of the finger touch area has been cleared, that is, there is no accumulated charge in the finger touch area. In this case, the fingerprint collector can collect a valid fingerprint image by executing the fingerprint image collection. The valid fingerprint image can be understood as a clean fingerprint image without noise, that is, a recognizable fingerprint image.

[0034] In some possible implementations, clearing the accumulated charge of the fingerprint collector is completed, including the following situations:

[0035] First, all the accumulated charges in the entire collection area are cleared.

[0036] In this case, fingerprint collection in the collection area will inevitably result in a clean fingerprint image, which can be used as a valid fingerprint image.

[0037] Second, the charge clearing of the area where the trigger position is located in the acquisition area is completed.

[0038] In some embodiments, the acquisition area is divided into multiple areas, and the accumulated charge in the area where the trigger position is located is cleared first according to the trigger position. The completion of clearing the area indicates that "the accumulated charge of the fingerprint collector is cleared", so the fingerprint image acquired in the area is a valid fingerprint image. Since the charge reported by the entire acquisition area is synchronous, the fingerprint recognition unit of the electronic device needs to first determine the position of the acquisition area of ​​the acquired fingerprint image, and only recognize the fingerprint image of the area where the trigger position is located, because the fingerprint images reported in other areas may still have accumulated charges that have not been cleared; in this way, it is ensured that the fingerprint image to be recognized is valid. While the acquisition area reports the acquired fingerprint image, the accumulated charge in the remaining area can continue to be cleared, or the clearing can be stopped.

[0039] In the embodiment of the present application, in response to the obtained trigger signal, the clearing of the accumulated charge of the fingerprint collector and the fingerprint collection process are triggered in parallel; if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector has the ability to collect valid fingerprint images; in this way, after the trigger signal is obtained, the accumulated charge of the fingerprint collector is cleared and the fingerprint collection process is executed at the same time, thereby reducing the delay caused by clearing the accumulated charge and speeding up the fingerprint collection response time.

[0040] In other embodiments, the trigger signal can be implemented by hardware, for example, a synchronization signal is obtained from the input / output port (General-purpose input / output, GPIO) of the touch chip of the display touch screen, and the synchronization signal is used to characterize the contact position of the finger contacting the display touch screen. For example, when the touch chip of the display touch screen detects a finger pressing operation, the input / output port of the touch chip is pulled from a high level to a low level to generate a synchronization signal, and the synchronization signal is sent to the input / output port of the fingerprint collector connected to the input / output port of the touch chip to trigger the fingerprint collector to clear the charge.

[0041] In some embodiments, in order to enable the fingerprint collector to collect a valid fingerprint image, clearing the accumulated charge of the fingerprint collector in step S102 can be achieved in the following ways:

[0042] Method 1: First, obtain the collection position of the finger in the collection area of ​​the fingerprint collector.

[0043] Here, the acquisition area corresponds to at least part of the display area of ​​the display touch screen. For example, the acquisition area can be the full screen, half screen, or an area of ​​any size occupying the display touch screen. The fingerprint collector is located below the display touch screen, which can be understood as an area that is easily touched by the finger when the user holds the device. In some possible implementations, first, the acquisition area is divided into M sub-areas; where M is an integer greater than 0; and then, the target sub-area where the finger is located is determined. For example, the acquisition area is divided into 4 cross-shaped areas. If the finger is located in the upper right area, then the upper right sub-area is the target area.

[0044] Then, a clearing order for clearing the accumulated charges of the fingerprint collector is determined based on the collection positions.

[0045] Here, the area where the acquisition position is located is set as the priority clearing area, and other areas can be cleared in a clockwise, counterclockwise, from top to bottom or from bottom to top order. In some possible implementations, if the acquisition position is located in the first area of ​​the acquisition area of ​​the fingerprint collector, the accumulated charge of the first area is cleared first in the process of clearing the accumulated charge of the fingerprint collector in the clearing order. For example, taking the above example as an example, the acquisition area is divided into 4 cross-shaped areas, the first area is the upper right area, then the upper right area is the first sub-area to clear the accumulated charge, and then the accumulated charge of other sub-areas is cleared clockwise or counterclockwise. Or, if the fingerprint is close to the upper right area, the upper right area is still used as the first area to clear the accumulated charge first. In another implementation, if the acquisition position of the fingerprint is located in the lower half of the display touch screen, the accumulated charge is cleared first from the lower half of the acquisition area. If the acquisition position of the fingerprint is located in the upper half of the display touch screen, the accumulated charge is cleared first from the upper half of the acquisition area.

[0046] Method 2: First, obtain the collection position of the finger in the collection area of ​​the fingerprint collector.

[0047] Then, a clearing area for clearing the accumulated charges of the fingerprint collector is determined based on the collection position.

[0048] Here, the acquisition position corresponds to the touch position of the finger on the display touch screen. The clearing area is a partial area of ​​the acquisition area. The acquisition position is determined. Since the fingerprint image needs to be acquired at the acquisition position, the area to which the acquisition position belongs can be used as an area where the accumulated charge needs to be cleared, that is, a clearing area; by clearing the accumulated charge of the clearing area, it can be ensured that the fingerprint image collected from the area is clean and effective. In some possible implementations, first, the clearing area is determined based on the acquisition position, and the clearing area belongs to the acquisition area of ​​the fingerprint collector; for example, taking the above example as an example, the acquisition area is divided into 4 cross-shaped areas, and the acquisition position is located in the upper right area, then the upper right area is determined as the clearing area. Then, the accumulated charge of the clearing area of ​​the fingerprint collector is cleared based on the clearing area. Here, after obtaining the trigger signal, in response to the trigger signal, the charge of the acquisition area is cleared while executing the acquisition process. In this scenario, the completion of clearing the accumulated charge in the area where the acquisition position is located indicates that the accumulated charge of the fingerprint collector is cleared. That is to say, by determining the clearing area through the acquisition position, only the accumulated charge in the clearing area can be cleared. In this way, since the charge reported by the entire acquisition area is synchronous, the fingerprint recognition unit of the electronic device needs to first determine the position of the acquisition area of ​​the acquired fingerprint image and recognize the fingerprint image collected in the clearing area.

[0049] Method 3: First, obtain a predicted area, where the predicted area is used to represent a contact position where a finger will contact the display touch screen.

[0050] Here, the predicted area can be obtained by predicting the contact position of the display touch screen at the next moment through the device processor. For example, the interactive interface of the payment application has already determined which area is the area for inputting fingerprints; or when the screen is turned on and fingerprint unlocking is required, it is also predicted that fingerprint collection will be performed at the next moment, and the contact position where the finger will touch the display touch screen is determined as the predicted area; or, it can also be detected that the gesture of the finger holding the electronic device meets a specific gesture, and the contact position where the finger will touch the display touch screen is determined as the predicted area. For example, the gesture of holding the electronic device is the thumb on the display side and the other four fingers on the shell side. This holding method indicates that the user may want to perform a fingerprint collection operation (for example, unlocking the screen). In this case, the contact position where the finger will touch the display touch screen is used as the predicted area.

[0051] Then, a clearing order for clearing the accumulated charges of the fingerprint collector is determined based on the predicted area.

[0052] Here, the predicted area is taken as the area for priority charge clearing, and then the accumulated charges in other areas are processed in turn. Taking the above example as an example, the acquisition area is divided into four cross-shaped areas. If the predicted area is the upper right area, then the upper right area is taken as the first area for charge clearing, and the accumulated charges in other areas are cleared in order from right to left and from top to bottom.

[0053] Method 4: First, a predicted area is obtained, where the predicted area is used to represent a contact position where a finger will contact the display touch screen.

[0054] Then, a clearing area is determined as a collection area of ​​the fingerprint collector based on the predicted area.

[0055] Here, the predicted area is a partial area of ​​the acquisition area. The predicted area is determined, because the fingerprint image needs to be acquired in the predicted area, so the predicted area can be used as an area where the accumulated charge needs to be cleared, that is, the clearing area; by clearing the accumulated charge in the clearing area, it can be ensured that the fingerprint image collected from the area is a clean and effective fingerprint image. For example, taking the above example as an example, the acquisition area is divided into 4 cross-shaped areas, and the predicted area is located in the upper right area, then the upper right area is determined as the clearing area. Then, based on the clearing area, the accumulated charge of the clearing area of ​​the fingerprint collector is cleared.

[0056] Mode 5: When it is detected that there is a fingerprint collection demand at a future time less than a preset time from the current time, the fingerprint collector is triggered to clear the charge on the collection area.

[0057] Here, when the processor of the electronic device detects that there is a need for fingerprint collection at a future moment, for example, when a transfer request or a payment request is detected, then there is a need for fingerprint collection at a future moment. At this time, the processor sends a clearing instruction to the fingerprint collector to trigger the fingerprint collector to clear the charge on the collection area. The fingerprint collector clears the charge on the collection area, which can be clearing the charge on all collection areas, or clearing the charge in the collection area where the finger will touch by detecting the finger position.

[0058] In some embodiments, after obtaining the trigger signal, if the current state of the electronic device is a sleep / standby state, the fingerprint collection process also includes waking up the electronic device so that the processor of the electronic device performs verification based on at least the valid fingerprint image collected by the fingerprint collector. That is to say, if the current state of the electronic device is a sleep / standby state, after obtaining the trigger signal, waking up the electronic device and displaying a prompt message on the display screen of the electronic device are performed in parallel with the fingerprint collector clearing the accumulated charge of the fingerprint collector. In this way, when the current state of the electronic device is a sleep / standby state, after obtaining the trigger signal, while waking up the electronic device, the charge clearing process is executed, which can save the time waiting for waking up the electronic device, thereby improving the response speed of fingerprint collection.

[0059] In some embodiments, an electronic device includes at least a display touch screen and a fingerprint collector, and generates a trigger signal by hardware as an example to illustrate the implementation process of the fingerprint collection method provided in the embodiment of the present application. Figure 2 As shown, Figure 2 The interactive diagram of the fingerprint collection method provided in the embodiment of the present application is combined with Figure 2 The steps shown are explained below:

[0060] Step S201: The touch chip detects an input touch operation and generates a trigger signal.

[0061] Here, the touch chip detects the input touch operation, and the input and output ports of the touch chip are pulled from high level to low level to generate a trigger signal. At this time, if the current state of the electronic device is a sleep / standby state, the electronic device is awakened.

[0062] Step S202: The touch chip sends the trigger signal to the input and output port of the fingerprint collector through its own input and output port.

[0063] Here, an input and output port is reserved in the touch chip and the fingerprint collector, and they are connected so that the trigger signal generated by the touch chip can be quickly transmitted to the fingerprint collector, ensuring the synchronization of the fingerprint collection process and clearing the accumulated charge of the fingerprint collector.

[0064] Step S203: the fingerprint collector responds to the trigger signal, clears the accumulated charge, and collects the fingerprint image.

[0065] Here, the input and output ports of the fingerprint collector receive a trigger signal and are pulled down from a high level to a low level, triggering the fingerprint collector to clear the accumulated charge.

[0066] Step S204: the touch screen of the touch chip displays prompt information.

[0067] Here, step S203 and step S204 are executed synchronously, so that while the prompt information is displayed on the touch screen, the fingerprint collector is triggered to clear the accumulated charge, which can save the delay caused by the fingerprint collector clearing the charge.

[0068] The following describes an exemplary application of an embodiment of the present invention in a practical application scenario.

[0069] For fingerprints under full-screen or half-screen touch screens, in some implementations, silicon materials are used, but the cost of implementation is high, so thin-film transistors are used to replace silicon materials. In this way, TFT can be regarded as a substrate, on which a photodiode array is set. In this way, the photodiode and TFT are combined to form a FoD sensor. When a finger touches the screen, the screen lights up, light shines on the finger, and reflected light is generated. The reflected light shines on the photodiode array, and the photodiode converts the optical signal into an electrical signal, that is, the fingerprint is collected. However, in this implementation method, since glass is used in the TFT process, the charge transmission will be relatively slow, and there will be charge accumulation. In addition, the full-screen screen is larger and the distance of the entire circuit is farther, so there will also be charge accumulation. In this way, the charge needs to be cleared before each fingerprint capture. This time is greater than 100ms, which has a greater impact on the fingerprint response time. If Figure 3 As shown, Figure 3 This is a schematic diagram of the implementation process of the fingerprint collection method of the present application embodiment, combined with Figure 3 The steps shown are explained below:

[0070] Step S301: The touch chip detects a touch action in the FoD area.

[0071] Step S302, wake up the main system and display the FoD icon.

[0072] Step S303: the main system sends a clearing instruction to the FoD, and the FoD responds to the instruction and clears the charge.

[0073] Here, the time consumed in step S303 may be greater than 100 milliseconds.

[0074] Step S304: After the charge clearing is completed, fingerprint collection is performed.

[0075] The embodiment of the present application provides a fingerprint collection method, by reserving a GPIO port in each fingerprint and touch chip (Touch) and connecting them, which are used as signal synchronization. When the touch chip detects a pressing action in the FoD fingerprint area, it notifies the fingerprint to clear the charge. In this way, the touch chip detects the touch operation, triggers its own GPIO port to drop from a high level to a low level, generates a trigger signal, and transmits the trigger signal to the fingerprint GPIO port through a wire. Hardware transmission speeds up the transmission rate.

[0076] The embodiment of the present application is aimed at hardware devices, and a GPIO interface is set at the fingerprint FoD and a GPIO interface is set at the touch chip, and the two interfaces are connected by a wire. In this way, after the touch chip detects a touch operation, it pulls its own GPIO from a high level to a low level, and transmits it to the FoD through the wire, notifying the FoD to start clearing the charge; in this way, the GPIO is used to trigger the FoD to clear the charge, and the response speed is faster. Figure 4 As shown, Figure 4 This is a schematic diagram of the implementation process of the fingerprint collection method of the present application embodiment, combined with Figure 4 The steps shown are explained below:

[0077] Step S401: The touch chip detects a touch action in the FoD area.

[0078] Step S402: Notify FoD via a synchronization signal.

[0079] Here, the synchronization signal can be realized by reserving a GPIO port on the fingerprint chip and the touch chip respectively and connecting them.

[0080] Step S403: while performing step S402, wake up the main system and display the FoD icon.

[0081] Step S404: After receiving the synchronization signal, the FoD clears the charge.

[0082] Step S405: After the charge clearing is completed, fingerprint collection is performed.

[0083] In the embodiment of the present application, by clearing the accumulated charge of the fingerprint collector, controlling the display of prompt information on the touch screen, and collecting the fingerprint image in parallel, the 100ms delay caused by clearing the charge of the FoD can be saved.

[0084] An embodiment of the present application provides an electronic device, Figure 5 Schematic diagram of the structure of the electronic device described in the embodiment of the present application, such as Figure 5 As shown, the electronic device 500 at least includes: a display touch screen 501, a fingerprint collector 502 and a processor 503, wherein:

[0085] Display touch screen 501;

[0086] A fingerprint collector 502 is located below the display touch screen, and the collection area of ​​the fingerprint collector corresponds to at least a part of the display area of ​​the display touch screen;

[0087] The processor 503 is used to obtain a trigger signal; in response to the trigger signal, control the display of prompt information on the display touch screen, clear the accumulated charge of the fingerprint collector, and collect a fingerprint image; wherein, if the clearing of the accumulated charge of the fingerprint collector is completed, the fingerprint collector can collect a valid fingerprint image when executing the collection of the fingerprint image.

[0088] In other embodiments, the fingerprint collector 502 includes:

[0089] A first obtaining module, used to obtain a collection position of a finger located in a collection area of ​​the fingerprint collector, wherein the collection area corresponds to at least a portion of a display area of ​​the display touch screen, and the fingerprint collector is located below the display touch screen;

[0090] A first determining module, configured to determine a clearing order for clearing the accumulated charges based on the acquisition position;

[0091] or

[0092] The second determination module is used to determine a clearing area for clearing the accumulated charges based on the acquisition position; wherein the acquisition position corresponds to a touch position of a finger on the display touch screen.

[0093] In other embodiments, the first determining module includes:

[0094] A first clearing unit, configured to, if the collection position is located in a first area of ​​the collection area of ​​the fingerprint collector, preferentially clear the accumulated charges in the first area during clearing the accumulated charges of the fingerprint collector in a clearing order;

[0095] or

[0096] The second determining module includes:

[0097] A first determining unit, configured to determine a clearing area based on the collection position, wherein the clearing area belongs to a collection area of ​​the fingerprint collector;

[0098] The second clearing unit is configured to clear the accumulated charges in the clearing area of ​​the fingerprint collector based on the clearing area.

[0099] In other embodiments, the fingerprint collector 502 includes:

[0100] A second obtaining module is used to obtain a predicted area, where the predicted area is used to represent a contact position where a finger will contact the display touch screen;

[0101] A third determination module, configured to determine a clearing order for clearing the accumulated charge of the fingerprint collector based on the predicted area;

[0102] or

[0103] The fourth determining module is used to determine the predicted area as a clearing area of ​​the collection area of ​​the fingerprint collector.

[0104] In other embodiments, the completion of clearing the accumulated charge in the area where the acquisition position is located indicates that the completion of clearing the accumulated charge of the fingerprint collector is completed.

[0105] In other embodiments, the electronic device further includes:

[0106] The processor is used to wake up the electronic device if the current state of the electronic device is a sleep / standby state while controlling the display of prompt information on the touch display screen, so as to perform verification based on at least a valid fingerprint image collected by the fingerprint collector.

[0107] In other embodiments, the trigger signal includes one of the following options:

[0108] A calling instruction for calling the fingerprint collector;

[0109] A control instruction for lighting up the display touch screen;

[0110] A synchronization signal is obtained from an input / output port of a touch chip of the display touch screen, wherein the synchronization signal is used to represent a contact position of a finger contacting the display touch screen.

[0111] It should be noted that in the embodiment of the present application, if the above-mentioned display method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including a number of instructions to enable a computing device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0112] Correspondingly, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned fingerprint collection method are implemented.

[0113] The description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0114] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0115] The above-mentioned separated components may or may not be physically separated, and the displayed components may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0116] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0117] A person skilled in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc. Various media that can store program codes.

[0118] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

[0119] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fingerprint collection method, the method comprising: Get a trigger signal; In response to the trigger signal, clearing the accumulated charge of the fingerprint collector; In response to the trigger signal, a fingerprint collection process is executed, the fingerprint collection process includes: controlling the display of prompt information on the display touch screen and collecting a fingerprint image; wherein the clearing of the accumulated charge of the fingerprint collector is performed in parallel with the execution of the fingerprint collection process; If the clearing of the accumulated charge of the fingerprint collector is completed, so that the fingerprint collector can collect a valid fingerprint image when collecting the fingerprint image; wherein the area where the trigger position is located is a partial area of ​​the collection area.

2. The method as claimed in claim 1, wherein clearing the accumulated charge of the fingerprint collector comprises: Obtaining a collection position of a finger in a collection area of ​​the fingerprint collector, wherein the collection area corresponds to at least a portion of a display area of ​​the display touch screen, and the fingerprint collector is located below the display touch screen; Determining a clearing order for clearing the accumulated charge of the fingerprint collector based on the collection position; or Determine a clearing area for clearing the accumulated charge of the fingerprint collector based on the collection position; The acquisition position corresponds to the touch position of the finger on the display touch screen.

3. The method as claimed in claim 2, wherein the step of determining a clearing order for clearing the accumulated charge of the fingerprint collector based on the collection position comprises: If the collection position is located in the first area of ​​the collection area of ​​the fingerprint collector, the accumulated charges in the first area are cleared preferentially in the process of clearing the accumulated charges of the fingerprint collector according to the clearing order; or The step of determining a clearing area for clearing the accumulated charge of the fingerprint collector based on the collection position includes: Determine a clearing area based on the collection position, the clearing area belongs to the collection area of ​​the fingerprint collector; The accumulated charges of the clear area of ​​the fingerprint collector are cleared based on the clear area.

4. The method as claimed in claim 1, wherein clearing the accumulated charge of the fingerprint collector comprises: Obtaining a predicted area, where the predicted area is used to represent a contact position where a finger will contact the display touch screen; Determining a clearing order for clearing the accumulated charge of the fingerprint collector based on the predicted area; or The predicted area is determined as a clearing area of ​​the collection area of ​​the fingerprint collector.

5. The method as claimed in claim 3, wherein the step of clearing the accumulated charge of the fingerprint collector comprises: The completion of clearing the accumulated charges in the area where the collection position is located indicates that the clearing of the accumulated charges of the fingerprint collector is completed.

6. The method of claim 1, further comprising: If the current state of the electronic device is a sleep / standby state, the fingerprint collection process further includes waking up the electronic device so that the processor of the electronic device performs verification based on at least the valid fingerprint image collected by the fingerprint collector.

7. The method according to claim 1 or 6, wherein the trigger signal comprises one of the following options: A calling instruction for calling the fingerprint collector; A control instruction for lighting up the display touch screen; A synchronization signal is obtained from an input / output port of a touch chip of the display touch screen, wherein the synchronization signal is used to represent a contact position of a finger contacting the display touch screen.

8. An electronic device, comprising: Display touch screen; A fingerprint collector is located below the display touch screen, and a collection area of ​​the fingerprint collector corresponds to at least a part of the display area of ​​the display touch screen; A processor, for obtaining a trigger signal; In response to the trigger signal, clearing the accumulated charge of the fingerprint collector; In response to the trigger signal, a fingerprint collection process is executed, and the fingerprint collection process includes: controlling the display of prompt information on the display touch screen and collecting fingerprint images; wherein, the accumulated charge of the fingerprint collector is cleared in parallel with the execution of the fingerprint collection process; if the accumulated charge of the fingerprint collector is cleared, the fingerprint collector can collect a valid fingerprint image when executing the fingerprint image collection; wherein the area where the trigger position is located is a partial area of ​​the collection area.

9. The electronic device as claimed in claim 8, wherein the fingerprint collector comprises: A first obtaining module, used to obtain a collection position of a finger located in a collection area of ​​the fingerprint collector, wherein the collection area corresponds to at least a portion of a display area of ​​the display touch screen, and the fingerprint collector is located below the display touch screen; A first determining module, configured to determine a clearing order for clearing the accumulated charges based on the acquisition position; or The second determination module is used to determine a clearing area for clearing the accumulated charges based on the acquisition position; wherein the acquisition position corresponds to a touch position of a finger on the display touch screen.

10. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the control method according to any one of claims 1 to 7.

Images