WO2021102969A1 - 触发指纹检测的方法及装置、电子设备和存储介质 - Google Patents
触发指纹检测的方法及装置、电子设备和存储介质 Download PDFInfo
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- WO2021102969A1 WO2021102969A1 PCT/CN2019/122124 CN2019122124W WO2021102969A1 WO 2021102969 A1 WO2021102969 A1 WO 2021102969A1 CN 2019122124 W CN2019122124 W CN 2019122124W WO 2021102969 A1 WO2021102969 A1 WO 2021102969A1
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- target
- sensing electrode
- fingerprint
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Definitions
- the embodiments of the present application relate to the technical field of electronic equipment, and in particular to a method and device for triggering fingerprint detection, electronic equipment, and storage media.
- the optical fingerprint collection device is integrated into the electronic equipment under the touch screen, which can realize the fingerprint collection function on the touch screen, ensuring a high screen-to-body ratio, and taking into account the needs of users accustomed to front fingerprint recognition. usage habit.
- the optical fingerprint collection device itself does not have a finger detection function, and it is necessary to use a touch display screen to detect touch operations, thereby triggering the collection of user fingerprints. Specifically, when the touch screen detects the touch operation of the user's finger and determines that the position of the touch operation is located in the collection area corresponding to the optical fingerprint collection device, the optical fingerprint collection device is triggered to collect the fingerprint. Then, the electronic device enters the fingerprint recognition process, and the processor of the electronic device recognizes the fingerprint collected by the optical fingerprint collection device.
- the embodiments of the present application expect to provide a method and device for triggering fingerprint detection, electronic equipment, and storage medium, which can reduce the power consumption when triggering fingerprint detection and increase the speed of triggering fingerprint detection.
- the embodiment of the present application provides a method for triggering fingerprint detection, which is applied to an electronic device, the electronic device includes a touch display screen, and an optical fingerprint collection device installed under the touch display screen, and the method includes:
- the target sensing electrode in the touch display screen Control the target sensing electrode in the touch display screen to be in a working state; wherein, the target sensing electrode is a part of the plurality of sensing electrodes in the touch display screen; the area where the target sensing electrode is located Corresponding to the fingerprint collection area of the optical fingerprint collection device;
- An embodiment of the present application provides a device for triggering fingerprint detection.
- the device includes a touch screen, an optical fingerprint collection device installed under the touch screen, a first control unit, a detection unit, and a second control unit ;among them,
- the first control unit is configured to control a target sensing electrode in the touch display screen to be in a working state; wherein the target sensing electrode is at least part of a plurality of sensing electrodes in the touch display screen; The area where the target sensing electrode is located corresponds to the fingerprint collection area of the optical fingerprint collection device;
- the detection unit is configured to detect a touch event through the target sensing electrode
- the second control unit is configured to control the optical fingerprint acquisition device to acquire fingerprint images in the fingerprint acquisition area if the touch event meets the conditions of the target touch event.
- An embodiment of the present application provides an electronic device that includes a touch screen, an optical fingerprint collection device installed under the touch screen, a processor, a memory, and a communication bus;
- the communication bus is configured to implement connection and communication between the processor and the memory
- the processor is configured to run a program for triggering fingerprint detection stored in the memory to implement the steps of the above method for triggering fingerprint detection.
- the embodiment of the present application provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the above method for triggering fingerprint detection.
- the method and device for triggering fingerprint detection and the computer storage medium can control the target sensing electrode in the touch display screen to be in a working state; wherein, the target sensing electrode is Part of the electrodes of the multiple sensing electrodes in the touch display screen; the area where the target sensing electrode is located corresponds to the fingerprint collection area of the optical fingerprint collection device; the touch event is detected by the target sensing electrode; if If the touch event satisfies the condition of the target touch event, then the optical fingerprint collection device is controlled to acquire a fingerprint image in the fingerprint collection area, and fingerprint detection is performed based on the fingerprint image.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and triggers fingerprint detection when the touch event is detected as the target touch event; Power consumption when triggering fingerprint detection, and increase the speed of triggering fingerprint detection.
- FIG. 1 is a schematic diagram 1 of the structural composition of an electronic device provided by an embodiment of the application.
- FIG. 2 is a schematic flowchart 1 of a method for triggering fingerprint detection according to an embodiment of the application
- FIG. 3 is a schematic diagram 2 of the structural composition of an electronic device provided by an embodiment of the application.
- FIG. 4 is a schematic diagram 3 of the structural composition of an electronic device provided by an embodiment of the application.
- FIG. 5 is a schematic diagram 4 of the structural composition of an electronic device provided by an embodiment of the application.
- FIG. 6 is a schematic diagram 5 of the structural composition of an electronic device provided by an embodiment of this application.
- FIG. 7 is a schematic diagram 6 of the structural composition of an electronic device provided by an embodiment of the application.
- FIG. 8 is a schematic flowchart 2 of a method for triggering fingerprint detection according to an embodiment of the application.
- FIG. 9 is a schematic structural composition diagram of a device for triggering fingerprint detection according to an embodiment of the application.
- FIG. 10 is a schematic diagram of the hardware structure composition of an electronic device provided by an embodiment of the application.
- the method for triggering fingerprint detection is applied to electronic devices, where electronic devices include, but are not limited to, smart phones, tablet computers, notebook computers, industrial computers, mobile Internet devices (MID), etc.
- electronic devices include, but are not limited to, smart phones, tablet computers, notebook computers, industrial computers, mobile Internet devices (MID), etc.
- the electronic device includes a touch screen 11, and an optical fingerprint collection device 12 installed under the touch screen 11; it should be noted that the optical fingerprint collection
- the device 12 can be arranged at any position below the touch screen 11, which is not limited in the embodiment of the present application.
- the touch display screen 11 includes a plurality of sensing electrodes, which are evenly distributed on the touch display screen 11.
- a fingerprint collection area 13 is provided on the touch display screen 11, and the fingerprint collection area 13 corresponds to the position of the optical fingerprint collection device 12 provided under the touch display screen 11.
- the fingerprint collection areas 13 corresponding to the optical fingerprint collection devices 12 of different types/functions are different.
- the fingerprint collection area 13 of the optical fingerprint collection device 12 in FIG. 1(a) may be a small part of the bottom area of the touch screen 11; the fingerprint collection area 13 of the optical fingerprint collection device 12 in FIG. 1(b) may be It is the area where half of the screen of the touch display screen 11 is located.
- the optical fingerprint collection device 12 refers to the use of the principle of total reflection of light, by emitting light to the fingerprint collection area, the light is reflected by the finger and then reaches the photosensitive element to form a fingerprint image.
- the electronic device detects and analyzes the collected fingerprint images to obtain the user's identity information.
- the embodiments of the present application may perform identity authentication based on fingerprint images, and be applied in scenarios such as unlocking and payment.
- the method for triggering fingerprint detection includes the following steps:
- Step 201 Control the target sensing electrode in the touch display screen to be in a working state.
- the target sensing electrode is a part of the multiple sensing electrodes in the touch display screen; the area where the target sensing electrode is located corresponds to the fingerprint collection area of the optical fingerprint collection device.
- the electronic device can adopt a certain strategy to adjust the working state of the sensing electrode in the touch display screen, and select the target sensing electrode from the multiple sensing electrodes of the touch display screen. Enter the working state.
- the electronic device can control the target sensing electrode in the touch display screen to be in a working state when it is in a specific state.
- the specific state may be a state where the electronic device is ready to perform fingerprint identification; for example, the specific state may be a locked screen state, a state of starting a payment application, a state of black screen, and so on.
- the specific state may be a state of starting the target application; specifically, controlling the target sensing electrode in the touch display screen to be in a working state includes:
- the target sensing electrode in the touch screen display is controlled to be in a working state.
- the target application refers to an application that is activated through fingerprint identity authentication.
- the specific state may be a state where the touch screen is in a black screen; specifically, controlling the target sensing electrode in the touch screen to be in a working state includes:
- the touch screen When the touch screen is in a black screen state, the target sensing electrode in the touch screen is controlled to be in a working state.
- the touch screen usually includes a bright screen state and a black screen state. In the bright screen state, the display panel in the touch screen lights up to display the current program page; in the black screen state, the touch display The display panel of the screen goes out and no image is displayed.
- the black screen state mentioned in the embodiment of the present application specifically refers to a state where the display panel of the touch display screen is not working, that is, a state where no display image is displayed.
- the electronic device can control part of the target sensing electrodes in the multiple sensing electrodes of the touch display screen to be in working state, and detect the touch events of the above-mentioned target sensing area through the target sensing electrodes .
- a driving circuit is provided in the touch display screen, and a plurality of sensing electrodes on the touch display screen can be connected with the driving circuit to receive a driving signal of the driving circuit.
- the electronic device can control the driving circuit to input a driving signal to one or a part of the sensing electrodes, but not to send a driving signal to the other sensing electrodes; in this way, the sensing electrode that inputs the driving signal can be in working state, so , The electronic device detects the touch operation through the sensing electrode inputting the driving signal.
- the electronic device can control the driving circuit to input a driving signal to the target sensing electrode, so that the target sensing electrode is in a working state, and the touch event is detected through the target sensing electrode.
- the area where the target sensing electrode is located corresponds to the fingerprint collection area corresponding to the optical fingerprint collection device. Specifically, the area where the target sensing electrode is located on the touch display screen overlaps the fingerprint collection area, and the area of the area where the target sensing electrode is located is less than or equal to the area of the fingerprint collection area.
- the structural composition diagram 2 of the electronic device shown in FIG. 3 it includes the touch screen 31, the fingerprint collection area 32 and the area 33 where the target sensing electrode is located; in FIG. 3(a), the target sensing The area of the area 33 where the electrode is located is equal to the area of the fingerprint collection area 32; in FIG. 3(b), the area of the area 33 where the target sensing electrode is located is smaller than the area of the fingerprint collection area 32.
- the target sensing electrode that needs to be activated to enter the working state can be preset, that is, the specific sensing electrode that needs to be activated.
- the target sensing electrode in the touch display screen is not fixed, but can be adjusted.
- the target sensing electrode may be determined according to the fingerprint collection area.
- the fingerprint collection area may be a non-fixed area, that is, the fingerprint collection area may be dynamically changed; the electronic device may determine the corresponding target sensing electrode according to the current fingerprint collection area.
- the structural composition diagram 3 of the electronic device shown in FIG. 4 it includes a touch screen 41, a fingerprint collection area 42 and an area 43 where the target sensing electrode is located.
- the fingerprint collection area 42 is close to the middle of the touch screen, all the electrodes at the location of the fingerprint collection area 42 can be set as target sensing electrodes, and the target sensing electrode is located in the area 43 It overlaps with the fingerprint collection area 42.
- Figure 4(b) when the fingerprint collection area 42 is located on half the screen of the touch screen 41, some of the sensing electrodes in the fingerprint collection area 42 can be set as target sensing electrodes, where the target sensing electrode is located in the area 43 is smaller than the fingerprint collection area 42.
- the target sensing electrode that needs to be activated to enter the working state can be set according to the scene in which the electronic device is located.
- the sensing electrode located in the half of the fingerprint collection area in the touch display screen can be set as the target sensing electrode; when the electronic device is in the extreme power-saving scenario, the touch screen can be set to A small part of the sensing electrode in the control display screen is used as the target sensing electrode.
- the operator can set different target sensing electrodes for different scenarios; the electronic device receives the operator's target sensing electrode setting instructions for different scenarios, and determines the target sensing electrodes that need to be activated to enter the working state.
- the electronic device can also set the target sensing electrode that needs to be activated to enter the working state according to the fingerprint collection area and the scene in which it is located. Specifically, the electronic device may first determine the initial sensing electrode according to the fingerprint collection area, and determine the target sensing electrode from the initial sensing electrode based on the scene in which the electronic device is located.
- the electronic device shown in FIG. 5 it includes a touch screen 51, a fingerprint collection area 52, an area 53 where the initial sensing electrode is located, and an area 54 where the target sensing electrode is located;
- the fingerprint collection area 52 is located on a half screen of the touch display screen.
- the sensing electrode on the right side of the fingerprint collection area 52 is set as the initial sensing electrode, and the initial sensing electrode area is 53; further, the electronic device is extremely power-saving
- a small portion of the sensing electrodes in the initial sensing electrodes can be set as target sensing electrodes, and the area 54 where the target sensing electrodes are located is smaller than the area 53 where the initial sensing electrodes are located and the fingerprint collection area 52.
- the target sensing electrode can be flexibly set, so that the fingerprint detection method is more in line with the user's habits.
- Step 202 Detect a touch event through the target sensing electrode.
- the electronic device may obtain the sensing signal of the target sensing electrode; here, the sensing signal may be a capacitance value, an inductance value, or a resistance value.
- the electronic device may acquire the sensing signal of the target sensing electrode according to a preset period, for example, 0.5 ms. Specifically, the electronic device may preset a scanning period, such as 0.5 ms, and sequentially acquire the sensing signals of the target sensing electrode within one scanning period. If the operator's finger or other touch devices touch the touch screen, the sensing signal of the sensing electrode will be changed. The electronic device can detect the change of the sensing signal to determine whether a touch event has occurred.
- a preset period for example, 0.5 ms.
- a scanning period such as 0.5 ms
- the electronic device when the electronic device detects that the sensing signal changes compared to the reference data, it can be determined that a touch event has occurred.
- the reference data here may be the sensing signal value of the target sensing electrode under the action of the driving signal when no touch occurs.
- Step 203 If the touch event satisfies the condition of the target touch event, control the optical fingerprint collection device to obtain a fingerprint image in the fingerprint collection area, and perform fingerprint detection based on the fingerprint image.
- the electronic device determines whether the touch event meets the conditions of the target touch event based on the sensing signal obtained by the target sensing electrode. If the conditions of the target touch event are met, the optical fingerprint collection device is activated to obtain fingerprint collection. The fingerprint image in the area, and fingerprint detection is performed based on the acquired fingerprint image.
- a target touch event may refer to an event in which the operator makes a specific touch within a specific time period; for example, a target touch event is an event in which the user clicks twice within 3 seconds; a target touch event may also refer to an event in which the operator An event in which a specific touch is made at a specific location within a specific period of time; for example, a target touch event is an event in which the user continuously presses the target location within 3 seconds.
- the specific duration, specific location, and specific touch can be arbitrarily combined as a target touch event, which is not limited in the embodiment of the present application.
- the electronic device can determine the touch event based on the change of the sensing signal acquired by the target sensing electrode; further, the electronic device determines whether the target touch event occurs based on the change of the sensing signal acquired by the target sensing electrode. Specifically, the electronic device can determine whether the sensing signal has a specific change in a specific time period, or whether the sensing signal has a specific time period and a specific sensing electrode in the target sensing electrode has changed; if the change in the sensing signal meets the above conditions, It can be determined that the touch event meets the conditions of the target touch event.
- the electronic device after determining that the touch event satisfies the condition of the target touch event, the electronic device triggers the optical fingerprint collection device to acquire the fingerprint image in the fingerprint collection area, and performs fingerprint detection based on the fingerprint image.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and triggers fingerprint detection when the touch event is detected as the target touch event; , Reduce the power consumption when triggering fingerprint detection, and increase the speed of triggering fingerprint detection.
- the embodiment of the present application provides a method for triggering fingerprint detection, and the method includes the following steps:
- Step 201 When the touch screen is in a black screen state, control the target sensing electrode in the touch screen to be in a working state.
- the touch display screen of the electronic device 60 includes a plurality of rows of first electrodes 64 extending in the first direction 61 and a plurality of rows of first electrodes 64 extending in the second direction.
- the second electrode 63 extends in the direction 62; the first direction 61 and the second direction 62 intersect.
- a sensing electrode is formed at the intersection of the first electrode 64 and the second electrode 63.
- the first direction 61 may be perpendicular to the second direction 62, or may cross obliquely, which is not limited in the embodiment of the present application.
- the intersection of the first electrode and the second electrode can form the two poles of the capacitor.
- the operator’s finger or other touch device touches the touch screen of the electronic device, it affects the distance between the two electrodes near the touch point.
- the coupling of the two electrodes changes the capacitance between the two electrodes; in this way, the electronic device can determine the touch operation according to the change in the capacitance at the intersection of the first electrode and the second electrode. Therefore, a sensing electrode for sensing touch operation is formed at the intersection of the first electrode and the second electrode.
- the touch display screen of the present application also includes a driving circuit (not shown in the figure); the driving circuit is used to provide a driving signal to the first electrode; at the same time, the electronic device receives the output signal of the second electrode; The capacitance value of the intersection of all the first electrodes and the second electrode is the capacitance value of the entire two-dimensional plane of the touch display screen of the electronic device.
- the touch operation is determined according to the amount of change in the two-dimensional capacitance value of the touch screen.
- controlling the target sensing electrode in the touch display screen to be in a working state can be specifically implemented in the following ways:
- the target first electrode specifically refers to a partial row of the first electrode 64
- the target second electrode specifically refers to a partial row of the second electrode 63.
- the electronic device can control the driving circuit to input a driving signal to the target first electrode, and at the same time control the target second electrode to receive the driving signal, so as to realize the control of the target first electrode and the target second electrode. In working condition.
- the intersection area of the target first electrode and the target second electrode corresponds to the fingerprint collection area. It can be understood that the area where the touch event is detected corresponds to the fingerprint collection area. Specifically, the intersection area of the first electrode and the target second electrode overlaps the fingerprint collection area, and the area of the fingerprint collection area is smaller than or equal to the intersection area of the first electrode and the target second electrode.
- the touch display screen of the electronic device 60 includes sixteen rows of first electrodes 64 (numbered 0-15 from left to right) extending along the vertical direction 61, and thirty-four rows along the The second electrodes 63 (numbered 0-33 from top to bottom) arranged in the horizontal direction 62, and the fingerprint recognition area 65.
- the electronic device 60 may use the electrodes numbered 5 to 10 in the first electrode 64 as the target first electrode, and the electrodes numbered 28 to 30 in the second electrode 63 as the target second electrode.
- the electronic device can dynamically set the target first electrode and the target second electrode that need to be activated to enter the working state in the black screen state according to the current scene of the electronic device or the opened application.
- Step 202 Detect a touch event through the target sensing electrode.
- detecting a touch through the target sensing electrode specifically refers to: acquiring a capacitance value through a target sensing electrode formed by a target first electrode and a target second electrode, and detecting a touch event based on the capacitance value.
- the electronic device presets a scanning period, and sequentially inputs a driving signal to the target first electrode during a scanning period, and at the same time receives an output signal of the target second electrode during a scanning period.
- the electronic device determines the capacitance value between the target first electrode and the target second electrode (that is, the target sensing electrode) based on the input driving signal and the output signal. Based on the capacitance values in multiple scan periods, a touch event is determined.
- step 202 specifically includes the following steps:
- Step 2021 Obtain a first capacitance value corresponding to the target sensing electrode in the current period, and a second capacitance value corresponding to the target sensing electrode in the historical period;
- Step 2022 Determine the amount of change between the first capacitance value and the second capacitance value
- Step 2023 When the amount of change is not zero, determine the touch event.
- the electronic device detects the capacitance value of the target sensing electrode in multiple periods; when it detects that the first capacitance value in the current period has changed from the second capacitance value in the historical period, the display screen can be determined A touch event has occurred.
- the historical period mentioned in the embodiment of the present application includes one or more periods before the current period.
- the second capacitance value may be the capacitance value when no touch event occurs in the historical period.
- the electronic device may use the second capacitance value as reference data, and compare the capacitance value in the current period with the second capacitance value to obtain the amount of change.
- the amount of change in the first capacitance value and the second capacitance value includes: the amount of change in the capacitance value and/or the amount of change in the number of capacitance values.
- the capacitance value acquired by the electronic device also includes multiple capacitance values.
- the change in the number of capacitance values can be understood as the change in the number of touch points.
- the capacitance value of each target sensing electrode in the second capacitance value is 50
- the capacitance value of 25 target sensing electrodes in the first capacitance value is 50
- the capacitance value of 25 target sensing electrodes is 200; it can be determined
- the number of capacitance changes is 25.
- Step 203 If the touch event satisfies the condition of the target touch event, control the optical fingerprint collection device to acquire the fingerprint image in the fingerprint collection area, and perform fingerprint detection based on the fingerprint image.
- the electronic device may determine whether a touch event occurs based on the amount of change between the first capacitance and the second capacitance. Further, the electronic device may also determine whether a touch event occurs based on the amount of change between the first capacitance and the second capacitance. Touch event.
- the touch event satisfies the condition of the target touch event.
- the change amount includes: a change value of a capacitance value
- the optical fingerprint collection device is controlled to obtain the fingerprint image in the fingerprint collection area.
- the optical fingerprint collection device is controlled to acquire the fingerprint in the fingerprint collection area image.
- the optical fingerprint collection device is controlled to obtain the fingerprint image in the fingerprint collection area.
- the amount of change includes: a change value of the number of capacitance values and a change value of the capacitance value;
- the optical fingerprint collection device is controlled to acquire the fingerprint image in the fingerprint collection area .
- the change value of the number of capacitance values simply refers to the change value of the number of touch points.
- the optical fingerprint collection device is controlled to obtain the fingerprint image in the fingerprint collection area.
- the operator's touch operation range is greater than the preset range; in other words, at least most of the operator's finger must be located within the target sensing electrode area to be considered as satisfying the target touch Time conditions.
- the optical fingerprint collection device is controlled to obtain the fingerprint image in the fingerprint collection area.
- first duration and the second duration are the same or can be different, which is not limited in the embodiment of the present application.
- the change amount includes: a change value of the number of capacitance values and a change value of the capacitance value
- the optical fingerprint collection device is controlled to acquire the fingerprint image in the fingerprint collection area.
- the optical fingerprint collection device is triggered to acquire the fingerprint image in the fingerprint collection area. In this way, accurate fingerprint images can be collected, and the efficiency of fingerprint collection can be improved.
- the optical fingerprint acquisition device is triggered to acquire the fingerprint image in the fingerprint acquisition area.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and when the touch event is detected as the target touch event, Trigger fingerprint detection; in this way, the power consumption when triggering fingerprint detection is reduced, and the speed of triggering fingerprint detection is increased.
- the fingerprint collection area is a non-fixed area, and the following steps can be implemented before step 201:
- the electronic device determines the fingerprint collection area
- the electronic device determines the target sensing electrode based on the fingerprint collection area.
- the fingerprint collection area in the electronic device can be changed.
- the optical fingerprint collection device located under the touch display screen in the electronic device can rotate and/or move.
- the electronic device determines the fingerprint collection area, including:
- the electronic device determines the fingerprint collection area based on the shooting angle and/or shooting position of the fingerprint collection device.
- the electronic device before determining the target sensing electrode, the electronic device first obtains the shooting angle and/or shooting position of the current optical fingerprint collection device. And according to the shooting angle and/or shooting position, the fingerprint collection area corresponding to the optical fingerprint collection device is calculated. Further, the target sensing electrode is determined according to the fingerprint collection area.
- the electronic device includes a touch screen 71, an optical fingerprint collecting device 72, a fingerprint collecting area 73 and an area 74 where the target sensing electrode is located.
- the electronic device acquires the shooting position of the optical fingerprint collection device 72 as the coordinates (7, 29) relative to the touch screen 71, and the shooting angle is 120 degrees from the touch screen (not shown in the figure);
- the fingerprint collection area 73 is determined; further, according to the fingerprint collection area 73 and combined with the user's right hand usage habits, the part of the sensing electrode near the right in the fingerprint collection area 73 is determined It is the target sensing electrode, and the area where the target sensing electrode is located is 74.
- the optical fingerprint acquisition device when the optical fingerprint acquisition device is controlled to acquire the fingerprint image in the fingerprint acquisition area in step 203, in order to acquire a clearer fingerprint image, the optical fingerprint acquisition device can be adjusted within the allowable error range. Angle and position to obtain fingerprint images in multiple fingerprint collection areas.
- the electronic device can analyze multiple fingerprint images to obtain an image with the best image quality for fingerprint detection. In this way, the accuracy of fingerprint detection is improved.
- step 201 the following steps may also be implemented before step 201:
- Step a Receive a first instruction; the first instruction is used to instruct to turn on the first part of the sensing electrode in the touch display screen; in response to the first instruction, the first part of the sensing electrode is used as the target sensing electrode;
- Step b Receive a second instruction; the second instruction is used to instruct to turn on the sensing electrodes of the second part of the touch display screen; the sensing electrodes of the first part and the sensing electrodes of the second part are at least partially different from the sensing electrodes; In response to the second instruction, the sensing electrode of the second part is used as the target sensing electrode.
- the first instruction and the second instruction may be instructions for setting different scenarios.
- the first instruction may be an instruction to turn on the off-screen fingerprint trigger function, which is used to turn on the fingerprint trigger in the black screen state
- the second instruction may be an instruction to turn on the black screen gesture function, and is used for gesture sensing in the black screen state.
- the electronic device can preset corresponding target sensing electrodes in different scenarios or in different applications.
- the corresponding target sensing electrodes are all sensing electrodes.
- the corresponding target sensing electrode is the sensing electrode corresponding to the fingerprint collection area.
- the electronic device sets different target sensing electrodes according to the different instructions received. In this way, the electronic device activates the corresponding target sensing electrode to acquire the sensing signal in the corresponding scene.
- the first instruction as an instruction to turn on the fingerprint trigger function
- the second instruction as an instruction to turn on the black screen gesture function
- a detailed description of a method for triggering fingerprint detection provided in an embodiment of the present application will be given.
- the method for triggering fingerprint detection provided by the embodiment of the present application specifically includes the following steps:
- Step 801 The electronic device receives the first part of sensing electrodes corresponding to the fingerprint trigger function set by the user, and the second part of sensing electrodes corresponding to the black screen gesture function.
- the user may set target sensing electrodes of the touch display screen corresponding to different scenes for different scenes in advance.
- the electronic device may receive a fingerprint trigger function preset by the user corresponding to the first part of the sensing electrode of the touch screen, where the area where the first part of the sensing electrode is located may overlap the fingerprint collection area, and the first part of the sensing electrode is located The area of the area is the same as that of the fingerprint collection area.
- the electronic device can also receive a black screen gesture function preset by the user corresponding to the second part of the sensing electrodes of the touch display screen, where the second part of the sensing electrodes is all the sensing electrodes of the touch display screen.
- Step 802 The electronic device responds to the user's instruction to turn on the black screen gesture function and/or the instruction to turn on the fingerprint trigger function.
- step 802 the electronic device also needs to turn on the fingerprint recognition function. Only after the fingerprint recognition function is turned on, the electronic device can set or receive a fingerprint trigger instruction. Therefore, the fingerprint recognition function needs to be turned on in step 802 to realize the fingerprint trigger function.
- Step 803 The electronic device judges whether the currently enabled function only enables the fingerprint trigger function without enabling the black screen gesture function.
- the fingerprint trigger function corresponds to the first part of the sensing electrode of the touch screen
- the black screen gesture function corresponds to the second part of the sensing electrode of the touch screen
- the second part of the sensing electrode is a touch display All the sensing electrodes in the screen
- the first part of the sensing electrodes is only a small part of the sensing electrodes of the touch screen. That is, the first part of the sensing electrode and the second part of the sensing electrode overlap. If the user turns on the fingerprint trigger command and the black screen gesture command at the same time, it is not enough to set a small part of the sensing electrode in the working state. Therefore, it is necessary to judge the current command and determine the final target sensing based on the current command. electrode.
- step 804 if the electronic device only turns on the fingerprint trigger function without turning on the black screen gesture function, step 804 is executed; if the electronic device does not only turn on the fingerprint trigger function without turning on the black screen gesture function, step 805 is executed.
- the electronic device judging that the current instruction does not only turn on the fingerprint trigger function without turning on the black screen gesture function may include the following situations:
- step 805 is executed.
- Step 804 Acquire the first part of the sensing electrode corresponding to the touch screen with the fingerprint trigger function, use the first part of the sensing electrode as the target sensing electrode, and scan the capacitance data.
- the fingerprint trigger function corresponds to the first part of the sensing electrodes of the touch display screen, and is the sensing electrodes preset in step 801.
- Step 805 Obtain the second part of the electrodes of the touch display screen corresponding to the black screen gesture function, use the second part of the sensing electrodes as the target sensing electrodes, and scan the capacitance data.
- black screen gesture function corresponds to the second part of the sensing electrode of the touch display screen, which is the sensing electrode preset in step 801.
- the embodiment of the present application further includes the following steps:
- the touch screen When the touch screen is in the black screen state, when the angular velocity of the electronic device is detected to be greater than the preset angular velocity, the touch screen is controlled to output prompt information at the position corresponding to the target sensing electrode; the prompt information is used to prompt the operator Describe the location of the fingerprint collection area.
- the electronic device detects the angular velocity of the electronic device in real time through sensors such as a gyroscope when the touch screen is in a black screen state.
- sensors such as a gyroscope when the touch screen is in a black screen state.
- the angular velocity is greater than the preset angular velocity, it can be considered that the electronic device has moved.
- the operator removes the mobile phone from Pick it up on the table.
- the touch display screen is controlled to output prompt information at the position corresponding to the target sensing electrode to prompt the operator the location of the fingerprint collection area. In this way, the location of the fingerprint collection area can be clearly prompted to the user, making the operation more user-friendly.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and when the touch event is detected as the target touch event, Trigger fingerprint detection; in this way, the power consumption when triggering fingerprint detection is reduced, and the speed of triggering fingerprint detection is increased.
- an embodiment of the present application provides a device for triggering fingerprint recognition, which is applied to an electronic device.
- the electronic device includes a touch screen and is installed on the touch screen.
- the lower optical fingerprint collection device as shown in Figure 9, the device includes:
- the first control unit 91 is configured to control the target sensing electrode in the touch display screen to be in a working state; wherein the target sensing electrode is a part of the plurality of sensing electrodes in the touch display screen; the area where the target sensing electrode is located Corresponding to the fingerprint collection area of the optical fingerprint collection device;
- the detection unit 92 is configured to detect a touch event through the target sensing electrode
- the second control unit 93 is configured to, if the touch event meets the condition of the target touch event, control the optical fingerprint collection device to acquire a fingerprint image in the fingerprint collection area, and perform fingerprint detection based on the fingerprint image.
- the first control unit 91 is configured to control the target sensing electrode in the touch display screen to be in a working state when the target application is started; the target application refers to the start of the target application through fingerprint identity authentication Applications.
- the first control unit 91 is configured to control the target sensing electrode in the touch display screen to be in a working state when the touch display screen is in a black screen state.
- the touch display screen of the electronic device includes a plurality of rows of first electrodes extending in a first direction and a plurality of rows of second electrodes extending in a second direction.
- a sensing electrode is formed at the intersection of the first electrode and the second electrode;
- the first control unit 91 is configured to control at least part of the target first electrode in the multiple rows of first electrodes to be in working state, and to control at least part of the target second electrode in the multiple rows of second electrodes to be in the working state; wherein, the target The intersection area of the first electrode and the target second electrode corresponds to the fingerprint collection area.
- the detection unit 92 is configured to obtain the first capacitance value corresponding to the target sensing electrode in the current period and the second capacitance value corresponding to the target sensing electrode in the historical period; to determine the first capacitance value And the change amount of the second capacitance value; when the change amount is not zero, the touch event is determined.
- the amount of change includes: a change value of a capacitance value
- the second control unit 93 is configured to control the optical fingerprint collection device to acquire the fingerprint image in the fingerprint collection area if the capacitance value change value is greater than the preset change value within the preset first time period.
- the amount of change includes: the amount of change in capacitance
- the second control unit 93 is configured to control the optical fingerprint collection device to acquire the fingerprint image in the fingerprint collection area if the change in the number of capacitance values is greater than the preset number within the preset second time period.
- the area where the target sensing electrode is located is less than or equal to the fingerprint collection area.
- the device for triggering fingerprint detection further includes a setting unit 94;
- the setting unit 94 is configured to determine the fingerprint collection area; and based on the fingerprint collection area, determine the target sensing electrode.
- the setting unit 94 is configured to determine the fingerprint collection area based on the shooting angle and/or shooting position of the fingerprint collection device.
- the setting unit 94 is configured to receive a first instruction; the first instruction is used to instruct to turn on the sensing electrode of the first part of the touch display screen; in response to the first instruction, the sensing electrode of the first part is used as the target sensing electrode; Alternatively, a second instruction is received; the second instruction is used to instruct to turn on the sensing electrodes of the second part of the touch display screen; the sensing electrodes of the first part and the sensing electrodes of the second part are at least partially different from the sensing electrodes; response The second instruction is to use the sensing electrode of the second part as the target sensing electrode.
- the first control unit 91 is configured to control the touch display screen to output prompt information at a position corresponding to the target sensing electrode when detecting that the angular velocity of the electronic device is greater than the preset angular velocity; the prompt information is used To prompt the operator the location of the fingerprint collection area.
- the device for triggering fingerprint detection can control the target sensing electrode in the touch display screen to be in a working state; wherein, the target sensing electrode is the touch display screen Part of the electrodes of the plurality of sensing electrodes in the plurality of sensing electrodes; the area where the target sensing electrode is located corresponds to the fingerprint collection area of the optical fingerprint collection device; the touch event is detected by the target sensing electrode; if the touch event satisfies the target Under the condition of the touch event, the optical fingerprint collection device is controlled to acquire the fingerprint image in the fingerprint collection area, and fingerprint detection is performed based on the fingerprint image.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and triggers fingerprint detection when the touch event is detected as the target touch event; Power consumption when triggering fingerprint detection, and increase the speed of triggering fingerprint detection.
- an embodiment of the present application also provides an electronic device.
- the electronic device 100 includes: processing The device 1001 and the memory 1002 configured to store a computer program capable of running on the processor,
- processor 1001 is configured to execute the method steps in the foregoing embodiment when the computer program is configured to run.
- the various components in the electronic device 100 are coupled together through the bus system 1003.
- the bus system 1003 is used to implement connection and communication between these components.
- the bus system 1003 also includes a power bus, a control bus, and a status signal bus.
- various buses are marked as the bus system 1003 in FIG. 10.
- the embodiment of the present application also provides a computer-readable storage medium, such as a memory 1002 including a computer program, which can be executed by the processor 1001 of the electronic device 100 to complete the steps described in the foregoing method.
- the computer-readable storage medium can be a magnetic random access memory (FRAM, ferromagnetic random access memory), a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), and an erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read-Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Flash Memory, Magnetic Surface Memory, Optical Disk , Or CD-ROM (Compact Disc Read-Only Memory) and other storage.
- FRAM magnetic random access memory
- ROM read-only memory
- PROM programmable read-only memory
- EPROM Erasable Programmable Read-Only Memory
- the method and device for triggering fingerprint detection and the computer storage medium can control the target sensing electrode in the touch display screen to be in the working state when the touch display screen is in the black screen state;
- the target sensing electrode is a part of the plurality of sensing electrodes in the touch display screen; the area where the target sensing electrode is located corresponds to the fingerprint collection area of the optical fingerprint collection device; and the target sensing The electrode detects a touch event; if the touch event meets the condition of the target touch event, the optical fingerprint collection device is controlled to obtain a fingerprint image in the fingerprint collection area, and fingerprint detection is performed based on the fingerprint image.
- the electronic device only controls part of the sensing electrodes in the touch display screen to be in working state, detects touch events through the part of the sensing electrodes, and triggers fingerprint detection when the touch event is detected as the target touch event; Power consumption when triggering fingerprint detection, and increase the speed of triggering fingerprint detection.
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Abstract
Description
Claims (20)
- 一种触发指纹检测的方法,应用于电子设备,所述电子设备包括触控显示屏,以及安装于所述触控显示屏下方的光学指纹采集装置,所述方法包括:控制所述触控显示屏中目标感测电极处于工作状态;其中,所述目标感测电极为所述触控显示屏中多个感测电极的部分电极;所述目标感测电极所处区域与所述光学指纹采集装置的指纹采集区域对应;通过所述目标感测电极检测触摸事件;如果所述触摸事件满足目标触摸事件的条件,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像,并基于所述指纹图像进行指纹检测。
- 根据权利要求1所述的方法,其中,所述控制所述触控显示屏中目标感测电极处于工作状态,包括:在启动目标应用的状态下,控制所述触控显示屏中目标感测电极处于工作状态;所述目标应用是指通过指纹身份认证进行启动的应用。
- 根据权利要求1所述的方法,其中,所述控制所述触控显示屏中目标感测电极处于工作状态,包括:在所述触控显示屏处于黑屏状态下,控制所述触控显示屏中目标感测电极处于工作状态。
- 根据权利要求1-3任一项所述的方法,其中,所述触控显示屏中包括多排在第一方向延伸的第一电极和多排沿在第二方向延伸的第二电极,所述第一方向和所述第二方向交叉;所述第一电极和所述第二电极交叉处形成所述感测电极;所述控制所述触控显示屏中目标感测电极处于工作状态,包括:控制多排第一电极中的至少部分目标第一电极处于工作状态,并控制多排第二电极中的至少部分目标第二电极处于工作状态;其中,所述目标第一电极和所述目标第二电极交叉区域与所述指纹采集区域对应。
- 根据权利要求1-3任一项所述的方法,其中,所述通过所述目标感测电极检测触摸事件,包括:获取当前周期内所述目标感测电极对应的第一电容值,以及历史周期内所述目标感测电极对应的第二电容值;确定所述第一电容值和所述第二电容值的变化量;当所述变化量不为零时,确定所述触摸事件。
- 根据权利要求5所述的方法,其中,所述变化量包括:电容值变化值;所述如果所述触摸事件满足目标触摸事件的条件,那么控制所述光学 指纹采集装置获取所述指纹采集区域内的指纹图像,包括:如果在预设第一时长内,所述电容值变化值大于预设变化值,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像。
- 根据权利要求5所述的方法,其中,所述变化量包括:电容值数量变化值;所述如果所述触摸事件满足目标触摸事件的条件,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像,包括:如果在预设第二时长内,所述电容值数量变化值大于预设数量,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像。
- 根据权利要求1-3任一项所述的方法,其中,所述目标感测电极所处区域小于或等于所述指纹采集区域。
- 根据权利要求1-3任一项所述的方法,其中,所述指纹采集区域为非固定区域,所述控制所述触控显示屏中目标感测电极处于工作状态之前,还包括:确定所述指纹采集区域;基于所述指纹采集区域,确定所述目标感测电极。
- 根据权利要求9所述的方法,其中,所述确定所述指纹采集区域,包括:基于所述指纹采集装置的拍摄角度和/或拍摄位置,确定所述指纹采集区域。
- 根据权利要求1-3任一项所述的方法,其中,所述控制所述触控显示屏中目标感测电极处于工作状态之前,还包括:接收第一指令;所述第一指令用于指示开启所述触控显示屏中第一部分的感测电极;响应所述第一指令,将所述第一部分的感测电极作为所述目标感测电极;或者,接收第二指令;所述第二指令用于指示开启所述触控显示屏中第二部分的感测电极;所述第一部分的感测电极与所述第二部分的感测电极至少部分的感测电极不同;响应所述第二指令,将所述第二部分的感测电极作为所述目标感测电极。
- 根据权利要求1所述的方法,其中,所述通过所述目标感测电极检测触摸事件之前,还包括:检测到所述电子设备的角速度大于预设角速度时,控制所述触控显示屏中与所述目标感测电极对应的位置处输出提示信息;所述提示信息用于向操作者提示所述指纹采集区域的位置。
- 一种触发指纹检测的装置,所述装置包括触控显示屏,安装于所述触控显示屏下方的光学指纹采集装置,第一控制单元,检测单元和第二控制单元;其中,所述第一控制单元,配置为在触控显示屏处于黑屏状态下,控制所述 触控显示屏中目标感测电极处于工作状态;其中,所述目标感测电极为所述触控显示屏中多个感测电极的至少部分;所述目标感测电极所处区域与所述光学指纹采集装置的指纹采集区域对应;所述检测单元,配置为通过所述目标感测电极检测触摸事件;所述第二控制单元,配置为如果所述触摸事件满足目标触摸事件的条件,那么控制所述光学指纹采集装置采集获取所述指纹采集区域内的指纹图像。
- 根据权利要求13所述的装置,其中,所述触控显示屏中包括多排在第一方向延伸的第一电极和多排沿在第二方向延伸的第二电极,所述第一方向和所述第二方向交叉;所述第一电极和所述第二电极交叉处形成所述感测电极;所述第一控制单元,配置为控制多排第一电极中的至少部分目标第一电极处于工作状态,并控制多排第二电极中的至少部分目标第二电极处于工作状态;其中,目标第一电极和目标第二电极交叉区域与指纹采集区域对应。
- 根据权利要求13所述的装置,其中,所述检测单元,配置为获取当前周期内所述目标感测电极对应的第一电容值,以及历史周期内所述目标感测电极对应的第二电容值;确定所述第一电容值和所述第二电容值的变化量;当所述变化量不为零时,确定所述触摸事件。
- 根据权利要求15所述的装置,其中,所述变化量包括:电容值变化值;所述第二控制单元,配置为如果在预设第一时长内,所述电容值变化值大于预设变化值,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像。
- 根据权利要求15所述的装置,其中,所述变化量包括:电容值数量变化值;所述第二控制单元,配置为如果在预设第二时长内,所述电容值数量变化值大于预设数量,那么控制所述光学指纹采集装置获取所述指纹采集区域内的指纹图像。
- 根据权利要求13所述的装置,其中,所述指纹采集区域为非固定区域;所述第一控制单元,配置为基于所述指纹采集区域,确定所述目标感测电极。
- 一种电子设备,所述电子设备包括触控显示屏,安装于所述触控显示屏下方的光学指纹采集装置,处理器、存储器和通信总线;所述通信总线,配置为实现所述处理器和所述存储器之间的连接通信;所述处理器,配置为运行所述存储器中存储的触发指纹检测的程序,以实现权利要求1-12任一项所述触发指纹检测的方法的步骤。
- 一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行实现权利要求1至12任一项所述触发指纹检测的方法的步骤。
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