Fingerprint data acquisition method and device, electronic equipment and machine readable storage medium

Abstract

The invention provides a fingerprint data acquisition method and device, electronic equipment and a machine readable storage medium. According to one example of the invention, the method comprises the following steps: in response to a touch operation for a fingerprint acquisition area located on a screen, lightening a target area, corresponding to the fingerprint acquisition area, on a display layer of the screen; when it is determined that the lightening duration of the target area reaches the target duration, indicating the fingerprint sensor to collect fingerprint data; wherein the target duration is a duration between a first moment when the target area is lightened and a second moment when light emitted after the target area is lightened is reflected by a finger to a fingerprint sensor located below the screen. According to the invention, the signal-to-noise ratio of the collected fingerprint data can be improved, and the definition of the generated fingerprint image can be further improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of computer, and particularly relates to a fingerprint data collection method and device, electronic equipment and machine readable storage medium. BACKGROUND

[0002] In the screen-under fingerprint collection scenario, the fingerprint sensor usually collects the fingerprint image of the user by using the image sensor, so as to facilitate the fingerprint identification.

[0003] Specifically, the fingerprint image is generated by collecting the reflection signal of the light emitted by the display layer to the image sensor after the light reaches the finger.

[0004] Since the capacity of the photosensitive element corresponding to each pixel point of the image sensor is limited, only a certain number of photons can be received, and the signal of the light emitted by the display layer directly reaching the image sensor without being reflected by the finger is always received before the above reflection signal, resulting in that the signal-to-noise ratio of the collected fingerprint data is low, and further resulting in that the clarity of the generated fingerprint image is low. SUMMARY

[0005] The present disclosure provides a fingerprint data collection method, which comprises:

[0006] In response to a touch operation on a fingerprint collection area of a screen, lighting a target area on a display layer of the screen corresponding to the fingerprint collection area;

[0007] When it is determined that the lighting duration of the target area reaches a target duration, instructing the fingerprint sensor to collect fingerprint data; wherein the target duration is the duration between the first time when the target area is lit and the second time when the light emitted after the target area is lit is reflected by the finger back to the fingerprint sensor located below the screen.

[0008] Optionally, the lighting the target area on the display layer of the screen corresponding to the fingerprint collection area comprises:

[0009] Periodically lighting the target area on the display layer of the screen corresponding to the fingerprint collection area according to a first periodic duration;

[0010] The instructing the fingerprint sensor to collect fingerprint data comprises:

[0011] Instructing the fingerprint sensor to periodically collect fingerprint data according to a second periodic duration; wherein the second periodic duration is greater than or equal to the first periodic duration.

[0012] Optionally, the cycle length is a sum of the target length and an invalid length; the invalid length is a length between a first time when the target area is lighted and a third time when light emitted after the target area is lighted is not reflected to reach the fingerprint sensor located below the screen; the cycle length includes an execution length and a non-execution length; the execution length includes a lighting length or a collection length; the execution length is greater than or equal to the non-execution length.

[0013] Optionally, the collection length is greater than the lighting length.

[0014] Optionally, the light of the display layer is light with an intensity greater than a preset intensity.

[0015] Optionally, in response to a touch operation on a fingerprint collection area of the screen, lighting a target area on a display layer of the screen corresponding to the fingerprint collection area, includes:

[0016] In response to a touch operation on a fingerprint collection area of the screen, determining a touch area of the fingerprint collection area to which the touch operation is directed;

[0017] Lighting a target area on a display layer of the screen corresponding to the touch area.

[0018] Optionally, determining a touch area of the fingerprint collection area to which the touch operation is directed, includes:

[0019] Obtaining capacitance data corresponding to each collection sub-area in at least one collection sub-area included in the target collection area;

[0020] According to the capacitance data, determining a target collection sub-area in which the corresponding capacitance data is greater than a preset threshold as the touch area of the fingerprint collection area to which the touch operation is directed.

[0021] Optionally, the screen is an OLED screen.

[0022] The present disclosure also provides a fingerprint data collection device, the device includes:

[0023] A response unit, configured to, in response to a touch operation on a fingerprint collection area of the screen, light a target area on a display layer of the screen corresponding to the fingerprint collection area;

[0024] An indication unit, configured to, when a lighting length of the target area reaches a target length, instruct the fingerprint sensor to collect fingerprint data; the target length is a length between a first time when the target area is lighted and a second time when light emitted after the target area is lighted is reflected by a finger to the fingerprint sensor located below the screen.

[0025] The present disclosure also provides an electronic device, comprising a communication interface, a processor, a memory and a bus, the communication interface, the processor and the memory are connected with each other through the bus;

[0026] The memory stores machine readable instructions, and the processor executes the fingerprint data collection method by invoking the machine readable instructions.

[0027] The present disclosure also provides a machine readable storage medium, which stores machine readable instructions, and the machine readable instructions realize the fingerprint data collection method when invoked and executed by a processor.

[0028] The technical solutions provided by the present disclosure can at least have the following beneficial effects:

[0029] Through the above embodiments, in response to a touch operation on the fingerprint collection area on the screen, the target area on the display layer of the screen corresponding to the fingerprint collection area is lit up; when the lighting duration of the target area reaches the target duration, the fingerprint sensor is instructed to collect fingerprint data. Since the target duration is the duration between the first time when the target area is lit up and the second time when the light emitted after the target area is lit up is reflected back to the fingerprint sensor located below the screen by the finger, at this time, the fingerprint sensor is instructed to collect fingerprint data, the reflected signal can be collected immediately, thereby avoiding the signal of the light emitted by the display layer directly reaching the image sensor before the reflected signal, which can improve the signal-to-noise ratio of the collected fingerprint data, and further improve the clarity of the generated fingerprint image. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0031] Figure 1 is a scene diagram of a fingerprint data collection method according to an exemplary embodiment.

[0032] Figure 2 is a flowchart of a fingerprint data collection method according to an exemplary embodiment.

[0033] Figure 3 is a schematic diagram of a fingerprint collection area division according to an exemplary embodiment.

[0034] Figure 4 This is a schematic diagram illustrating a screen stacking design according to an exemplary embodiment.

[0035] Figure 5 This is a schematic diagram illustrating a cycle duration according to an exemplary embodiment.

[0036] Figure 6 This is a block diagram illustrating a fingerprint data acquisition device according to an exemplary embodiment.

[0037] Figure 7 This is a hardware structure diagram of an electronic device containing a fingerprint data acquisition device, according to an exemplary embodiment. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0039] It should be noted that in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described in this disclosure. In some other embodiments, the methods may include more or fewer steps than those described in this disclosure.

[0040] The fingerprint data acquisition method provided in this disclosure is described below through specific embodiments and exemplary application scenarios. This method, by instructing the fingerprint sensor to begin fingerprint data acquisition only after the light emitted from the display screen is reflected back to the fingerprint sensor, avoids invalid signals being received before the reflected signals, thereby improving the signal-to-noise ratio of the fingerprint data.

[0041] In implementation, in response to a touch operation on the fingerprint collection area located on the screen, the target area on the display layer of the screen corresponding to the fingerprint collection area can be lit up;

[0042] When it is determined that the illumination duration of the target area has reached the target duration, the fingerprint sensor is instructed to collect fingerprint data; wherein, the target duration is the duration between the first moment when the target area is illuminated and the second moment when the light emitted after the target area is illuminated is reflected back to the fingerprint sensor located under the screen by the finger.

[0043] By the above embodiments, in response to a touch operation on the fingerprint collection area on the screen, the target area on the display layer of the screen corresponding to the fingerprint collection area is lighted up; when it is determined that the light-up duration of the target area reaches a target duration, the fingerprint sensor is instructed to collect fingerprint data. Since the target duration is the duration between the first time when the target area is lighted up and the second time when the light emitted after the target area is lighted up is reflected by the finger back to the fingerprint sensor under the screen, when the fingerprint sensor is instructed to collect fingerprint data at this time, the reflected signal can be collected immediately, so that invalid signals are avoided to be received by the fingerprint sensor before the reflected signal, the signal-to-noise ratio of the collected fingerprint data can be improved, and the clarity of the generated fingerprint image can be further improved.

[0044] The present disclosure will be described below through specific embodiments and in combination with exemplary application scenarios.

[0045] Please refer to Figure 1 , Figure 1 is a scene diagram of a fingerprint data collection method according to an exemplary embodiment. As shown in Figure 1 , the electronic device can be equipped with a screen, which can display time information and can also include a fingerprint collection area. When a user performs a touch operation on the fingerprint collection area on the screen, the processor of the electronic device can respond to the touch operation on the fingerprint collection area on the screen to light up a target area on the display layer of the screen corresponding to the fingerprint collection area; the processor can determine whether the light-up duration of the target area reaches a target duration; the target duration can be the duration between the first time when the target area is lighted up and the second time when the light emitted after the target area is lighted up is reflected by the finger back to the fingerprint sensor under the screen; if it is determined that the light-up duration of the target area reaches the target duration, the fingerprint sensor can be instructed to collect fingerprint data.

[0046] The processor can periodically light up the target area on the display layer of the screen corresponding to the fingerprint collection area according to a first periodic duration; when it is determined that the light-up duration of the target area reaches a target duration, the fingerprint sensor can be instructed to periodically collect fingerprint data according to a second periodic duration; the execution duration of the second periodic duration can be greater than or equal to the execution duration of the first periodic duration.

[0047] The periodic duration can be the sum of the target duration and an invalid duration; the invalid duration can be the duration between the first time when the target area is lighted up and the third time when the light emitted after the target area is lighted up does not reach the fingerprint sensor under the screen; the periodic duration can include an execution duration and a non-execution duration; the execution duration can include a light-up duration or a collection duration; the execution duration can be greater than or equal to the non-execution duration.

[0048] The acquisition duration can be greater than the lighting duration.

[0049] The light of the display layer can be light with an intensity greater than a preset intensity.

[0050] The processor can determine, in response to a touch operation on a fingerprint acquisition area of the screen, a touch area of the touch operation on the fingerprint acquisition area, and light up a target area on the display layer of the screen corresponding to the touch area.

[0051] The processor can obtain capacitance data corresponding to each of at least one acquisition sub-area included in the fingerprint acquisition area, and determine, according to the capacitance data, a target acquisition sub-area in which the corresponding capacitance data is greater than a preset threshold as a touch area of the touch operation on the fingerprint acquisition area.

[0052] The screen can be an OLED screen.

[0053] See Figure 2 , Figure 2 is a flowchart of a fingerprint data acquisition method according to an exemplary embodiment.

[0054] As Figure 2 shown, the processor of the electronic device can perform the following steps:

[0055] Step 202, in response to a touch operation on a fingerprint acquisition area of the screen, light up a target area on the display layer of the screen corresponding to the fingerprint acquisition area.

[0056] The screen can be composed of multiple layers stacked together. The fingerprint acquisition area can be a pre-set area that can be used for fingerprint unlocking. A fingerprint sensor can be pre-set below the fingerprint acquisition area of the screen, which can be used to acquire fingerprint data and generate a fingerprint image.

[0057] For example, the processor can instruct the display layer to light up a light spot. The light emitted by the display layer can reach the finger and be reflected back to the fingerprint sensor located below the screen. Thus, the fingerprint sensor can generate a fingerprint image according to the acquired reflection signal. Since the fingerprint sensor acquires the reflection signal of the light emitted by the display layer and reflected by the finger back to the fingerprint sensor located below the screen, the target area on the display corresponding to the fingerprint acquisition area needs to be lighted up before the fingerprint data is acquired, so that the light emitted by the display can reach the fingerprint sensor below the fingerprint acquisition area via the reflection of the finger.

[0058] For example, when a user taps the screen with a finger, the capacitance data of the touch layer of the screen changes. The touch IC of the screen can determine, based on the change in the capacitance data, that the touch operation is directed to the fingerprint collection area of the screen, and can report the fingerprint collection area information to the processor. The processor can respond to the touch operation of the user directed to the fingerprint collection area of the screen by lighting up the target area of the display layer corresponding to the fingerprint collection area.

[0059] The specific form of the touch operation can be a touch operation or a press operation, and the present disclosure does not limit this.

[0060] In an embodiment shown, the screen can be an OLED screen.

[0061] The OLED (Organic Light Emitting Diode) screen is a new type of display technology that typically uses organic light-emitting materials to emit light. Unlike traditional liquid crystal display screens, the OLED screen does not require a backlight module because each pixel point itself is a light-emitting, so that the OLED screen can completely consume no power when the black pixel point is turned off, thereby achieving a higher energy efficiency ratio and a deeper black performance.

[0062] In the present disclosure, the OLED screen can detect the touch operation of the user directed to the screen and determine that the touch operation of the user is directed to the fingerprint collection area of the screen.

[0063] In an embodiment shown, the light of the display layer can be light with an intensity greater than a preset intensity.

[0064] As the transmittance of the screen of the mobile phone becomes lower and lower, the reflected signal reflected back to the fingerprint sensor via the finger becomes weaker and weaker, therefore, in order to improve the intensity of the reflected signal, the intensity of the light of the display layer can be increased.

[0065] For example, the light of the display layer can be set to an intensity greater than a preset threshold.

[0066] The specific value of the preset threshold can be set according to actual needs, and the present disclosure does not limit this.

[0067] In an embodiment shown, the processor can respond to the touch operation directed to the fingerprint collection area of the screen by determining the touch area of the fingerprint collection area to which the touch operation is directed, and can light up the target area of the display layer of the screen corresponding to the touch area.

[0068] Since the fingerprint collection area of the screen is usually larger than the actual contact area when the finger touches, the finger cannot completely cover the fingerprint collection area, which causes the target area of the display layer to be lit up, and the light emitted from the display layer overflows from the part of the area that is not covered by the finger, thereby causing the problem of glare.

[0069] Therefore, the processor can first determine the touch area actually covered by the touch operation in the fingerprint collection area, and light up the touch area.

[0070] For example, the fingerprint collection area can include an upper left area, a lower left area, an upper right area, and a lower right area. The processor can first determine that the touch area of the touch operation in the fingerprint collection area is the lower left area of the four sub-areas. Based on this, the processor can light up the lower left area.

[0071] In this way, the target area corresponding to the actual touch area on the display layer can be lit up, thereby avoiding light overflow from the area that is not covered, and solving the problem of glare of the light of the display layer.

[0072] The specific way of determining the touch area can be set according to actual needs, and the present disclosure does not limit this.

[0073] In an embodiment shown, the processor can obtain the capacitance data corresponding to each collection sub-area in at least one collection sub-area included in the fingerprint collection area; and determine, according to the capacitance data, a target collection sub-area corresponding to the capacitance data greater than a preset threshold in the at least one collection sub-area as the touch area of the touch operation in the fingerprint collection area.

[0074] The processor can pre-divide the fingerprint collection area into at least one collection sub-area. The processor can determine the touch area actually covered by the user according to the capacitance data corresponding to the collection sub-area, and light up the target area on the display layer corresponding to the touch area, thereby being able to more accurately determine the touch area actually covered, and effectively avoiding light overflow from the area that is not covered.

[0075] For example, please refer to Figure 3 , Figure 3 is a schematic diagram of fingerprint collection area division according to an exemplary embodiment. As shown in Figure 3As shown, the fingerprint collection area can include collection sub-area_1, collection sub-area_2, collection sub-area_3, collection sub-area_4, collection sub-area_5, collection sub-area_6, collection sub-area_7, collection sub-area_8, and collection sub-area_9. The processor can obtain the capacitance data corresponding to the nine collection sub-areas respectively. According to the capacitance data, the processor can determine the target collection sub-area corresponding to the capacitance data greater than the preset threshold from the nine collection sub-areas. The target collection sub-area can include collection sub-area_5, collection sub-area_6, collection sub-area_8, and collection sub-area_9. The processor can determine the four target collection sub-areas as the actual touch area of the touch operation on the fingerprint collection area, so as to light up the target area corresponding to the four target collection sub-areas on the display layer of the screen when the lighting duration of the target area reaches the target duration.

[0076] In this way, the accuracy of determining the touch area can be improved, thereby more effectively avoiding light overflow from the uncovered area and solving the problem of glare on the display layer.

[0077] In an embodiment shown, the processor can instruct the display IC to light up the target area corresponding to the fingerprint collection area on the display layer of the screen in response to the touch operation on the fingerprint collection area located on the screen.

[0078] The display IC is an integrated circuit specifically designed to control and drive a display screen, and is an indispensable component in modern electronic devices. It is responsible for processing signals from a computer or other data sources and converting them into driving signals suitable for specific display technologies. The display IC can control the brightness, contrast, color, and other parameters of the display to ensure that the screen works normally and displays clear images or text. In the present disclosure, the processor can instruct the display IC to light up the target area corresponding to the fingerprint collection area on the display layer.

[0079] For example, the processor can instruct the display IC to light up the target area corresponding to the fingerprint collection area on the display layer in response to the touch operation of the user on the fingerprint collection area located on the screen.

[0080] Step 204: instructing the fingerprint sensor to collect fingerprint data when the lighting duration of the target area reaches the target duration. The target duration is the duration between the first time when the target area is lit up and the second time when the light reflected by the finger back to the fingerprint sensor located below the screen after the target area is lit up.

[0081] The light emitted by the display screen can also directly reach the fingerprint sensor under the display screen without being reflected by the finger and be received by the fingerprint sensor. In this case, the signal received by the fingerprint sensor does not carry the fingerprint information of the finger, i.e., the fingerprint sensor receives invalid signal at this time.

[0082] Since the reflection signal reaches the fingerprint sensor when the lighting duration of the target area reaches the target duration, the fingerprint sensor is instructed to collect fingerprint data at this time, and the reflection signal can be collected, thereby avoiding that the invalid signal is received by the fingerprint sensor before the reflection signal.

[0083] Please refer to Figure 4 , Figure 4 is a schematic diagram of a screen stack design according to an exemplary embodiment. As shown in Figure 4 , the screen can be composed of a cover layer, a touch layer, a display layer, a foam layer, a fingerprint sensor located under the fingerprint collection area of the screen, and a crystal attached to the fingerprint sensor. After the target area of the display layer is lit, part of the light emitted by the target area can pass through the touch layer and the cover layer to reach the finger and be reflected back to the fingerprint sensor by the finger, and the reflection signal reflected back by the finger can be collected by the fingerprint sensor; another part of the light can directly reach the fingerprint sensor, and the fingerprint sensor can receive invalid signal that is not reflected by the finger. It can be seen that the invalid signal always reaches the fingerprint sensor before the reflection signal and is received by the fingerprint sensor. In order to avoid this situation, the fingerprint sensor can be instructed to start collecting fingerprint data when the reflection signal reaches the fingerprint sensor.

[0084] For example, the fingerprint sensor is instructed to start collecting fingerprint data when the lighting duration of the target area reaches the target duration. The target duration is the duration required for part of the light emitted by the target area to pass through the touch layer and the cover layer to reach the finger and be reflected back to the fingerprint sensor by the finger.

[0085] In an embodiment shown, the processor can periodically light the target area corresponding to the fingerprint collection area on the display layer of the screen according to a first period duration; when the lighting duration of the target area reaches a target duration, the processor can instruct the fingerprint sensor to periodically collect fingerprint data according to a second period duration; and the second period duration is greater than or equal to the first period duration.

[0086] Since the duration required for the reflection signal to reach the fingerprint sensor can be greater than the target duration, the second period duration can be greater than the first period duration, so that the reflection signal can be fully collected within each period duration.

[0087] For example, the processor can periodically light up a target region on the display layer corresponding to the fingerprint collection region according to a first cycle length; when the light-up length of the target region reaches a target length, the processor can instruct the fingerprint sensor to periodically collect fingerprint data according to a second cycle length; the first cycle length can be 1 millisecond, and the second cycle length can be 1.2 milliseconds.

[0088] In this way, the reflected signal can be fully collected, and the signal-to-noise ratio of the collected fingerprint data can be improved.

[0089] To further filter the collection of invalid signals, the second cycle length can be equal to the first cycle length, the processor can periodically light up the target region according to the consistent cycle length, and periodically collect the fingerprint data when the light-up length of the target region reaches the target length. Based on this, since the invalid signal does not reach or only part of it reaches the fingerprint sensor when the fingerprint sensor starts collecting, the invalid signal can be filtered.

[0090] For example, please refer to Figure 5 , Figure 5 is a schematic diagram of a cycle length according to an exemplary embodiment. As Figure 5 shown, the cycle length of the first cycle of lighting up the target region and collecting the fingerprint data can include an execution length and a non-execution length, the execution length can be a collection length or a light-up length, the execution length can be consistent with the non-execution length, the second cycle can be a cycle in which the invalid signal reaches the fingerprint sensor, and the third cycle can be a cycle in which the reflected signal reaches the fingerprint sensor, or a cycle in which the fingerprint sensor collects fingerprint data; when the invalid signal reaches the fingerprint sensor, the fingerprint sensor has not started collecting, when the reflected signal reaches the fingerprint sensor, the fingerprint sensor starts collecting, and at this time the invalid signal has not arrived, therefore, at this time, only the reflected signal is collected, and in the subsequent collection length, only part of the invalid signal is collected, and more reflected signal can be collected, thereby filtering most of the invalid signal and improving the signal-to-noise ratio of the fingerprint data.

[0091] In this way, the signal-to-noise ratio of the fingerprint data can be further improved.

[0092] It should be noted that the second cycle in this embodiment is a cycle in which the invalid signal reaches the fingerprint sensor, and is not particularly associated with the above-mentioned second cycle length, and the present disclosure specifically describes this.

[0093] The specific time length of the cycle time length can be pre-set according to actual needs, can be obtained when the fingerprint recognition scene is triggered for the first time, can be calculated in real time during the fingerprint recognition process, or can be periodically calculated by the electronic device according to a calculation cycle, and the present disclosure does not limit this.

[0094] In an embodiment shown, the cycle time length can be the sum of the target time length and the invalid time length; the invalid time length is the time length between the first time when the target area is lit and the third time when the light emitted after the target area is lit does not reach the fingerprint sensor located below the screen; the cycle time length includes the execution time length and the non-execution time length; the execution time length includes the lighting time length or the collection time length; the execution time length can be greater than or equal to the non-execution time length.

[0095] When the cycle time length is set as the sum of the target time length and the invalid time length, most of the invalid signals can be further filtered out.

[0096] For example, the cycle time length for lighting the target area and collecting the fingerprint data can be (T1+T2)*2, the execution time length can be (T1+T2) / 2*3, and the non-execution time length can be (T1+T2) / 2; or the execution time length can be T1+T2, and the non-execution time length can be T1+T2.

[0097] For another example, as shown in Figure 5 the cycle time length for lighting the target area and collecting the fingerprint data can include the execution time length and the non-execution time length, the execution time length can be T1+T2, T1 can be the time length between the first time when the target area is lit and the third time when the light emitted after the target area is lit does not reach the fingerprint sensor located below the screen, and T2 can be the time length between the first time when the target area is lit and the fourth time when the light emitted after the target area is lit reaches the finger; when the lighting time length of the target area reaches T1, that is, when the invalid signal reaches the fingerprint sensor, the fingerprint sensor has not started collecting, and when the lighting time length of the target area reaches the target time length (T1+T2+T2), that is, when the reflected signal reaches the fingerprint sensor, the fingerprint sensor starts collecting, and at this time, the invalid signal has not reached, so at this time, only the reflected signal is collected, and in the subsequent collection time length, part of the invalid signal and all the reflected signal can be collected, thereby filtering most of the invalid signal and improving the signal-to-noise ratio of the fingerprint data.

[0098] In this way, the invalid signal can be further filtered out, and the signal-to-noise ratio of the fingerprint data can be improved.

[0099] In an embodiment shown, the collection time length can be greater than the lighting time length.

[0100] Since the time length required for the reflection signal to reach the fingerprint sensor can be greater than the target time length, the collection time length can be greater than the lighting time length, so that the reflection signal can be fully collected in each collection time length.

[0101] For example, the lighting time length can be 1 millisecond, and the collection time length can be 1.2 milliseconds. The processor can fully collect the reflection signal in 1.2 milliseconds.

[0102] In this way, the reflection signal can be fully collected, and the signal-to-noise ratio of the collected fingerprint data can be improved.

[0103] Corresponding to the embodiment of the fingerprint data collection method, the present disclosure also provides an embodiment of a fingerprint data collection device.

[0104] Please refer to Figure 6 , Figure 6 is a block diagram of a fingerprint data collection device according to an exemplary embodiment. The device can include:

[0105] The response unit 602 is configured to, in response to a touch operation on the fingerprint collection area of the screen, light up the target area on the display layer of the screen corresponding to the fingerprint collection area;

[0106] The indication unit 604 is configured to instruct the fingerprint sensor to collect fingerprint data when it is determined that the lighting time length of the target area reaches a target time length. The target time length is the time length between the first time when the target area is lit up and the second time when the light reflected by the finger back to the fingerprint sensor under the screen after the target area is lit up.

[0107] In this embodiment, the response unit 602 can be configured to:

[0108] Light up the target area on the display layer of the screen corresponding to the fingerprint collection area periodically according to a first periodic time length;

[0109] The indication unit 604 can be configured to:

[0110] Instruct the fingerprint sensor to collect fingerprint data periodically according to a second periodic time length. The second periodic time length is greater than or equal to the first periodic time length.

[0111] In the embodiment, the cycle duration can be the sum of the target duration and an invalid duration. The invalid duration can be the duration between the first time point when the target region is lighted and the third time point when the light emitted after the target region is lighted is not reflected to the fingerprint sensor under the screen. The cycle duration can include an execution duration and a non-execution duration. The execution duration can include a light-up duration or a collection duration. The execution duration can be greater than or equal to the non-execution duration.

[0112] In the embodiment, the collection duration can be greater than the light-up duration.

[0113] In the embodiment, the light of the display layer can be light with an intensity greater than a preset intensity.

[0114] In the embodiment, the response unit 602 can be configured to:

[0115] In response to a touch operation on a fingerprint collection region of a screen, determine a touch area of the touch operation on the fingerprint collection region;

[0116] Light up a target region on a display layer of the screen corresponding to the touch area.

[0117] In the embodiment, the response unit 602 can be configured to:

[0118] Obtain capacitance data corresponding to each collection sub-region in at least one collection sub-region included in the fingerprint collection region;

[0119] According to the capacitance data, determine a target collection sub-region in which the corresponding capacitance data is greater than a preset threshold value as the touch area of the touch operation on the fingerprint collection region.

[0120] In the embodiment, the response unit 602 can be configured to:

[0121] In response to a touch operation on a fingerprint collection region of a screen, instruct a display IC to light up a target region on a display layer of the screen corresponding to the fingerprint collection region.

[0122] In the embodiment, the screen can be an OLED screen.

[0123] For apparatus embodiments, since they basically correspond to the method embodiments, relevant parts are described by referring to the parts of the method embodiments. The apparatus embodiments described above are only illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purposes of the present disclosure according to actual needs. Those skilled in the art can understand and implement it without creative effort.

[0124] For the apparatus in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments of the related method, and will not be described in detail here.

[0125] Embodiments of the present disclosure also propose an electronic device, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the method described in any of the above embodiments.

[0126] Figure 7 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 700 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, an in-vehicle terminal, a wearable device, etc.

[0127] Referring to Figure 7 , the electronic device 700 can include one or more of the following components: a processing component 702, a memory 704, a power supply component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0128] The processing component 702 usually controls overall operations of the electronic device 700, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 702 can include one or more processors 720 to execute instructions to complete all or part of the steps of the methods described above. In addition, the processing component 702 can include one or more modules to facilitate the interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate the interaction between the multimedia component 708 and the processing component 702.

[0129] The memory 704 is configured to store various types of data to support the operations of the electronic device 700. Examples of these data include instructions for any application programs or methods operating on the electronic device 700, contact data, phonebook data, messages, pictures, videos, etc. The memory 704 can be implemented by any type of volatile or nonvolatile memory, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disc, or optical disc.

[0130] The power supply component 706 supplies power for various components of the electronic device 700. The power supply component 706 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 700.

[0131] The multimedia component 708 includes a screen providing an output interface between the electronic device 700 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or a sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 708 includes a front camera and / or a back camera. The front camera and / or the back camera can receive external multimedia data when the electronic device 700 is in an operation mode, such as a photographing mode or a video mode. Each of the front camera and the back camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0132] The audio component 710 is configured to output and / or input an audio signal. For example, the audio component 710 includes a microphone (MIC) configured to receive an external audio signal when the electronic device 700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting an audio signal.

[0133] The I / O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which can be a keypad, a click wheel, buttons, etc. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0134] The sensor component 714 includes one or more sensors for providing status assessments for various aspects of the electronic device 700. For example, the sensor component 714 can detect an open / closed position of the electronic device 700, relative positioning of components of the electronic device 700, such as a display and a keypad of the electronic device 700, a change in position of the electronic device 700 or a component of the electronic device 700, presence or absence of user contact with the electronic device 700, orientation or acceleration / deceleration / g-force and temperature changes of the electronic device 700. The sensor component 714 can include an optical sensor for detecting ambient light, a proximity sensor for detecting nearby objects without any physical touch, a CMOS or CCD image sensor for use in imaging applications, or an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor in some embodiments.

[0135] The communication component 716 is configured to facilitate wired or wireless communication between the electronic device 700 and other devices. The electronic device 700 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In an example embodiment, the communication component 716 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technology.

[0136] In an example embodiment, the electronic device 700 can be implemented using one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements to perform the methods described in any of the above embodiments.

[0137] In an example embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 704 including instructions, is also provided, which can be executed by the processor 720 of the electronic device 700 to complete the methods described above. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0138] Embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of the above embodiments.

[0139] Embodiments of the present disclosure also provide a computer program product configured to perform the wireless charging foreign object detection method of any of the above embodiments.

[0140] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known, accepted, and customary practice in the art to which the present disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0141] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims appended hereto.

[0142] The above description is only preferred embodiments of one or more embodiments of the present disclosure and is not intended to limit one or more embodiments of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present disclosure should be included in the scope of protection of one or more embodiments of the present disclosure.

[0143] The user information (including but not limited to electronic device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present disclosure are information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for the user to choose authorization or refusal.

Claims

1. A method of collecting fingerprint data, characterized by, The method comprises: in response to a touch operation on a fingerprint collection area of a screen, lighting up a target area on a display layer of the screen corresponding to the fingerprint collection area; when determining that the lighting up duration of the target area reaches a target duration, instructing the fingerprint sensor to collect fingerprint data; wherein the target duration is the duration between a first time when the target area is lit up and a second time when light emitted after the target area is lit up is reflected back to the fingerprint sensor located below the screen by a finger.

2. The method of claim 1, wherein, The lighting up of the target area on the display layer of the screen corresponding to the fingerprint collection area comprises: periodically lighting up the target area on the display layer of the screen corresponding to the fingerprint collection area according to a first periodic duration; The instruction of the fingerprint sensor to collect fingerprint data comprises: instructing the fingerprint sensor to periodically collect fingerprint data according to a second periodic duration; wherein the second periodic duration is greater than or equal to the first periodic duration.

3. The method of claim 2, wherein, The periodic duration is the sum of the target duration and an invalid duration; wherein the invalid duration is the duration between the first time when the target area is lit up and a third time when light emitted after the target area is lit up does not reach the fingerprint sensor located below the screen by reflection; the periodic duration comprises an execution duration and a non-execution duration; the execution duration comprises a lighting up duration or a collection duration; the execution duration is greater than or equal to the non-execution duration.

4. The method of claim 3, wherein, The collection duration is greater than the lighting up duration.

5. The method of claim 1, wherein, The light of the display layer is light with an intensity greater than a preset intensity.

6. The method of claim 1, wherein, The lighting up of the target area on the display layer of the screen corresponding to the fingerprint collection area in response to the touch operation on the fingerprint collection area of the screen comprises: in response to the touch operation on the fingerprint collection area of the screen, determining a touch area of the fingerprint collection area to which the touch operation is directed; lighting up a target area on the display layer of the screen corresponding to the touch area.

7. The method of claim 6, wherein, The determination of the touch area of the fingerprint collection area to which the touch operation is directed comprises: obtaining capacitance data corresponding to each collection sub-area in at least one collection sub-area included in the fingerprint collection area; according to the capacitance data, determining a target collection sub-area in which the corresponding capacitance data is greater than a preset threshold as the touch area of the fingerprint collection area to which the touch operation is directed.

8. The method of claim 1, wherein, The screen is an OLED screen.

9. A fingerprint data acquisition device, characterized by The apparatus comprises: a response unit configured to light up a target area on a display layer of a screen corresponding to a fingerprint collection area of the screen in response to a touch operation on the fingerprint collection area of the screen; an instruction unit configured to instruct a fingerprint sensor to collect fingerprint data when determining that the lighting up duration of the target area reaches a target duration; wherein the target duration is the duration between a first time when the target area is lit up and a second time when light emitted after the target area is lit up is reflected back to the fingerprint sensor located below the screen by a finger.

10. An electronic device, comprising: comprise: a processor; a memory for storing processor-executable instructions; The processor is configured to implement the method in any one of claims 1 to 8.

11. A machine-readable storage medium, characterized in that, The machine readable storage medium stores machine readable instructions which, when invoked and executed by the processor, implement the method in any one of claims 1 to 8.

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