CN105069436A - Control method and system based on fingerprint identification, and fingerprint identification module group - Google Patents
Control method and system based on fingerprint identification, and fingerprint identification module group Download PDFInfo
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- CN105069436A CN105069436A CN201510502061.2A CN201510502061A CN105069436A CN 105069436 A CN105069436 A CN 105069436A CN 201510502061 A CN201510502061 A CN 201510502061A CN 105069436 A CN105069436 A CN 105069436A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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Abstract
The invention discloses a control method and a system based on fingerprint identification and a fingerprint identification module group. The control method comprises steps of obtaining a user fingerprint image and pressing information of a fingerprint identification module, performing matching analysis according to the fingerprint image and fingerprint characteristics stored in the fingerprint database, and performing controlling on a terminal according to the matching and analysis result and the pressing information. The invention can detect the pressing information of the fingerprint identification module while utilizing the fingerprint identification module to perform fingerprint identification, and, on the basis of identifying the fingerprint, cooperates with the pressing force applied by the user finger to realize variety of controls on the terminal. The invention effectively expands the application range of the fingerprint identification module group in the terminal, enriches the functions of the fingerprint identification module group, improves the utilization rate of the hardware resources, and further improves the user experience.
Description
Technical field
The present invention relates to fingerprint identification technology field, particularly relate to a kind of control method based on fingerprint recognition and system, fingerprint recognition module.
Background technology
Fingerprint, because it has unchangeable property, uniqueness and convenience, almost becomes the synonym of living things feature recognition.Fingerprint refers to the streakline that the recessed injustice of the finger tips of people positive surface skin epirelief produces.The regular arrangement of streakline forms different line types.
Namely fingerprint recognition refers to be differentiated by the details of more different fingerprint.Because everyone fingerprint is different, be exactly that between same people's ten refers to, fingerprint also has obvious difference, and therefore fingerprint can be used for identity authentication.Now fingerprint identification technology is applied on various terminal device, such as smart mobile phone, can identifying user identity by fingerprint recognition, can obtain corresponding rights of using after user is by checking.But the fingerprint recognition module at present in terminal only can identify fingerprint, and its function is comparatively single, and hardware resource utilization is lower.
Summary of the invention
Based on this, for solving Problems existing of the prior art, the invention provides a kind of control method based on fingerprint recognition and system, expanding the function of fingerprint recognition module in terminal.
For realizing above-mentioned technical purpose, in the embodiment of the present invention, adopt following technical scheme:
Based on a control method for fingerprint recognition, comprise the following steps:
Obtain the fingerprint image of user and the pressurized information of fingerprint recognition module;
The matching analysis is carried out according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
According to the result of the matching analysis and described pressurized information, terminal is controlled.
And a kind of control system based on fingerprint recognition, comprising:
Acquisition module, for the pressurized information of the fingerprint image and fingerprint recognition module that obtain user;
Matching analysis module, for carrying out the matching analysis according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
Control module, for controlling terminal according to the result of the matching analysis and described pressurized information.
Also provide a kind of fingerprint recognition module in the embodiment of the present invention, this fingerprint recognition module comprises support component, guard block, fingerprint module and cover plate; Described support component is connected with described guard block and described cover plate respectively, and described support component, described guard block, described cover plate are enclosed to form cavity; Described fingerprint module is arranged on described inside cavity; Described guard block is made up of piezoelectric ceramics.Fingerprint recognition module of the present invention, can also by user, the pressure be applied on fingerprint recognition module be converted into voltage signal by piezoelectric ceramics except being used for except fingerprint recognition, thus obtains the pressurized information of fingerprint recognition module.
Control method based on fingerprint recognition of the present invention and system, when utilizing fingerprint recognition module to carry out fingerprint recognition, also detect the pressurized information of fingerprint recognition module, the pressurized information according to fingerprint recognition result and fingerprint recognition module controls terminal.Therefore, user coordinates the pressing dynamics of finger after by fingerprint recognition, can realize the various control to terminal.The present invention extends the range of application of fingerprint recognition module in terminal effectively, has enriched the function of fingerprint recognition module, improves the utilization factor of hardware resource, also further increases Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet based on the control method of fingerprint recognition in the embodiment of the present invention one;
Fig. 2 is the schematic flow sheet for the Match Analysis of fingerprint recognition in the embodiment of the present invention one;
Fig. 3 is the schematic diagram in the embodiment of the present invention one, pressure being converted into voltage signal;
Fig. 4 is the structural representation based on the control system of fingerprint recognition in the embodiment of the present invention two;
Fig. 5 is the structural representation of fingerprint recognition module in the embodiment of the present invention three;
Fig. 6 is another structural representation of fingerprint recognition module in the embodiment of the present invention three.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing, content of the present invention is described in further detail.
Embodiment one
As shown in Figure 1, the present embodiment one provides a kind of control method based on fingerprint recognition, comprises the following steps:
S11 obtains the fingerprint image of user and the pressurized information of fingerprint recognition module;
S12 carries out the matching analysis according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
S13 controls terminal according to the result of the matching analysis and described pressurized information.
Concrete, the lines of fingerprint is not continuous print, smooth straight, but often occur interrupting, bifurcated or turnover.These breakpoints, bifurcation and turning point are just called unique point.Namely fingerprint characteristic refers to the parameter of each unique point, and fingerprint characteristic provides the confirmation of fingerprint uniqueness, and most typical unique point is destination node and bifurcation, and other also comprise branch point, isolated point, circling point, short grain etc.The parameter of unique point comprises direction (node can towards certain direction), curvature (describing the speed that ridge orientation changes), (position of node is described by x/y coordinate in position, can be absolute, also can relative to trigpoint or unique point).The present embodiment, when user carries out fingerprint recognition, first extracts the fingerprint image of user, and the fingerprint characteristic preserved in itself and fingerprint base is carried out the matching analysis.
Existing Match Analysis is diversified, in the present embodiment, provides a kind of Match Analysis for fingerprint recognition specifically, as shown in Figure 2, comprises the following steps:
S121 carries out pre-service to described fingerprint image, obtains the crestal line data of fingerprint;
First pre-service is carried out to fingerprint image, such as, judge the quality of fingerprint image, when second-rate, image enhancement processing is done to it; The finger-print region taken the fingerprint in image, draws fingerprint orientation and estimation frequency; Image does the pre-service such as binaryzation (gray-scale value of pixel each in fingerprint image is set to 0 or 255), image thinning.Fingerprint is the pattern of finger surface ridges and paddy, and its uniqueness both can be determined by the one-piece pattern of ridge and paddy, also can be decided by the local feature region of crestal line.The present embodiment after pre-service is done to fingerprint image, the crestal line data taken the fingerprint.
S122 is from the fingerprint characteristic needed for described crestal line extracting data fingerprint recognition;
Fingerprint characteristic comprises the parameter of each unique point, provides the confirmation of fingerprint uniqueness, and the present embodiment from the unique point needed for crestal line extracting data fingerprint recognition, and obtains the parameter of unique point, namely obtains the fingerprint characteristic needed for fingerprint recognition.
The fingerprint characteristic preserved in the fingerprint characteristic extracted and fingerprint base is carried out the matching analysis by S123.
After the fingerprint characteristic obtaining user, the fingerprint characteristic preserved in itself and database is carried out the matching analysis, the mode of concrete the matching analysis has two kinds: one is comparison one to one, namely from fingerprint base, user fingerprints to be contrasted is retrieved according to the ID of user, again with the fingerprint characteristic comparison newly gathered, determine whether identical fingerprints; Another kind is one-to-many comparison, by all fingerprint characteristics comparison one by one in the fingerprint characteristic newly gathered and fingerprint base, finally completes fingerprint recognition.
Further, the present embodiment, when carrying out fingerprint recognition, also obtains the pressurized information of fingerprint recognition module.The described pressurized information response dynamics of user's finger presses fingerprint recognition module, this pressurized information can be the pressure that fingerprint recognition module is subject to, and also can be the various electric signal (such as voltage signal) generated by this pressure.
When characterizing the pressurized information of fingerprint recognition module with voltage signal, the top layer of fingerprint recognition module can adopt piezoceramic material, with reference to shown in Fig. 3, piezoelectric ceramics is the electron ceramic material that a class has piezoelectric property, under mechanical external force effect, there is relative displacement and cause polarization in media interior positive and negative charge center, thus causes occurring the bound charge that symbol is contrary in dielectric two end surfaces.When external force is not too large, its electric density is directly proportional to external force.Based on the piezoelectric property of piezoelectric ceramics, can refer to Fig. 3 and design an amplifying circuit, when user carries out fingerprint recognition, finger presses fingerprint recognition module, piezoceramic material finger sensing pressing dynamics, produces voltage, by formation voltage signal U after amplifying circuit
0, during finger presses great efforts, U
0also larger.By U
0combine with above-mentioned the matching analysis result, the control to terminal can be realized.
Be diversified according to the result of fingerprint recognition and the pressurized information of fingerprint recognition module to the mode that terminal controls, concrete control mode can set according to actual demand.
Such as, for voltage signal arranges different scopes, first voltage range be [0V, 1V), the second voltage range be [1V, 2V), tertiary voltage scope be [2V, 3V); When the fingerprint minutiae matching preserved in the fingerprint image and fingerprint base of user, if voltage signal U
0in first voltage range, then power-off operation is carried out to terminal; When the fingerprint minutiae matching preserved in the fingerprint image and fingerprint base of user, if voltage signal U
0in the second voltage range, then screen locking operation is carried out to terminal; When the fingerprint minutiae matching preserved in the fingerprint image and fingerprint base of user, if voltage signal U
0in tertiary voltage range of signal, then volume is carried out to terminal and increase operation or volume reduction operation.
Therefore, by said method, user, when fingerprint matching, can carry out various control by the pressure applied in various degree to terminal, use very convenient.
In the conventional technology, fingerprint recognition module in terminal is only used for identifying fingerprint, and the control method based on fingerprint recognition provided in the present embodiment, while utilizing fingerprint recognition module to carry out fingerprint recognition, also detect the pressurized information of fingerprint recognition module, the pressing dynamics that the result of fingerprint recognition and user are pointed is combined, the various control to terminal can be realized.The present embodiment extends the range of application of fingerprint recognition module in terminal effectively, has enriched the function of fingerprint recognition module, improves the utilization factor of hardware resource, also further increases Consumer's Experience.
Embodiment two
The present embodiment two provides a kind of control system based on fingerprint recognition, this application system can be arranged in terminal, make terminal that fingerprint recognition module both can have been utilized to carry out fingerprint recognition, can also control terminal according to the dynamics of user's finger presses fingerprint recognition module.
As shown in Figure 4, in the present embodiment two, the control system based on fingerprint recognition comprises:
Acquisition module 1, for the pressurized information of the fingerprint image and fingerprint recognition module that obtain user;
Matching analysis module 2, for carrying out the matching analysis according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
Control module 3, for controlling terminal according to the matching analysis result and described pressurized information.
Concrete, the present embodiment, when user carries out fingerprint recognition, extracts the fingerprint image of user by acquisition module 1, and by matching analysis module 2, the fingerprint characteristic preserved in the fingerprint image of user and fingerprint base is carried out the matching analysis.
Existing fingerprint matching analytical approach is diversified, and in a kind of embodiment, as shown in Figure 4, matching analysis module 2 comprises:
Pretreatment module 21, for carrying out pre-service to described fingerprint image, obtains the crestal line data of fingerprint;
Extraction module 22, for from the fingerprint characteristic needed for described crestal line extracting data fingerprint recognition;
Analysis module 23, carries out the matching analysis one by one for the fingerprint characteristic will preserved in described fingerprint characteristic and fingerprint base.
Wherein, pretreatment module 21 pairs of fingerprint images carry out pre-service, such as, judge the quality of fingerprint image, when second-rate, make image enhancement processing to it; The finger-print region taken the fingerprint in image, draws fingerprint orientation and estimation frequency; Image does the pre-service such as binaryzation (gray-scale value of pixel each in fingerprint image is set to 0 or 255), image thinning.Fingerprint is the pattern of finger surface ridges and paddy, and its uniqueness both can be determined by the one-piece pattern of ridge and paddy, also can be decided by the local feature region of crestal line.In the present embodiment, pretreatment module 21 is after doing pre-service to fingerprint image, the crestal line data taken the fingerprint.
Fingerprint characteristic comprises the parameter of each unique point, provide the confirmation of fingerprint uniqueness, in the present embodiment, extraction module 22 is from the unique point needed for crestal line extracting data fingerprint recognition, and obtains the parameter of unique point, namely obtains the fingerprint characteristic needed for fingerprint recognition.
After the fingerprint characteristic obtaining user, the fingerprint characteristic preserved in itself and database is carried out the matching analysis by analysis module 23, the mode of concrete the matching analysis has two kinds: one is comparison one to one, namely from fingerprint base, user fingerprints to be contrasted is retrieved according to the ID of user, again with the fingerprint characteristic comparison newly gathered, determine whether identical fingerprints; Another kind is one-to-many comparison, by all fingerprint characteristics comparison one by one in the fingerprint characteristic newly gathered and fingerprint base, finally completes fingerprint recognition.
Further, the present embodiment, when obtaining the fingerprint image of user, also obtains the pressurized information of fingerprint recognition module by acquisition module 1.The described pressurized information response dynamics of user's finger presses fingerprint recognition module, this pressurized information can be the pressure that fingerprint recognition module is subject to, and also can be the various electric signal (such as voltage signal) generated by this pressure.
Control module 3 controls terminal according to the result (i.e. the output of matching analysis module 2) of fingerprint recognition and the pressurized information of fingerprint recognition module.But the control mode of control module 3 pairs of terminals is diversified, concrete control mode can set according to actual demand.
Such as, for the pressurized information of fingerprint recognition module for voltage signal, for voltage signal arranges different scopes, suppose first voltage range for [0V, 1V), the second voltage range be [1V, 2V), tertiary voltage scope be [2V, 3V); When matching analysis module 2 judges the fingerprint minutiae matching preserved in the fingerprint image of user and fingerprint base, if voltage signal is within the scope of the first voltage signal, then control module 3 pairs of terminals carry out power-off operation; When matching analysis module 2 judges the fingerprint minutiae matching preserved in the fingerprint image of user and fingerprint base, if voltage signal is within the scope of the second voltage signal, then control module 3 pairs of terminals carry out screen locking operation; When matching analysis module 2 judges the fingerprint minutiae matching preserved in the fingerprint image of user and fingerprint base, if voltage signal is in tertiary voltage range of signal, then control module 3 pairs of terminals are carried out volume and are increased operation or volume reduces operation.
The implementation method of above-mentioned its concrete function of modules with reference to the concrete grammar provided in embodiment one, no longer can repeat herein.
In sum, the control system based on fingerprint recognition in the present embodiment, while utilizing fingerprint recognition module to carry out fingerprint recognition, also obtain the pressurized information of fingerprint recognition module, the pressurized information of the result of fingerprint recognition and fingerprint recognition module is combined, the various control to terminal can be realized, effectively expanded the function of fingerprint recognition module in terminal, improve Consumer's Experience.
Embodiment three
In the present embodiment three, provide a kind of fingerprint recognition module, as shown in Figure 5, this fingerprint recognition module comprises support component 101, guard block 102, fingerprint module 103 and cover plate 104.Fingerprint module 103 is a kind of devices completing fingerprint collecting and identification.In the fingerprint recognition module that the present embodiment provides; support component 101 is connected with guard block 102 and cover plate 104 respectively; support component 101, guard block 102, cover plate 104 are enclosed to form cavity; fingerprint module 103 is arranged on inside cavity; fingerprint module 103 can pass through FPC (FlexiblePrintedCircuitboard; flexible circuit board) 105 to be connected with external equipment, guard block 102 is made up of piezoelectric ceramics.
Piezoelectric ceramics is the electron ceramic material that a class has piezoelectric property, and under mechanical external force effect, media interior positive and negative charge center relative displacement occurs and causes polarization, thus causes occurring the bound charge that symbol is contrary in dielectric two end surfaces.When external force is not too large, its electric density is directly proportional to external force.Based on the piezoelectric property of piezoelectric ceramics, when user carries out fingerprint recognition, finger presses fingerprint recognition module, piezoceramic material finger sensing pressing dynamics, produces voltage, can by amplifying circuit by this voltage amplification formation voltage signal U
0, due to the piezoelectric characteristics of piezoelectric ceramics, within the specific limits, during finger presses great efforts, U
0also larger.Thus this voltage signal U can be made full use of
0generate various control signal.
The fingerprint recognition module provided in the present embodiment, can also by user, the pressure be applied on fingerprint recognition module be converted into voltage signal by piezoelectric ceramics except being used for except fingerprint recognition, thus obtains the pressurized information of fingerprint recognition module.Based on the fingerprint recognition module provided in the present embodiment, the control method based on fingerprint recognition provided is provided, can controls terminal in conjunction with the pressurized information of the result of fingerprint recognition and fingerprint recognition module in embodiment one.Therefore, the fingerprint recognition module in the present embodiment is compared to the fingerprint recognition module in conventional art, and its function more horn of plenty, range of application is also relatively wider, has significant progress.
In a kind of embodiment, as shown in Figure 6, fingerprint module 103 comprises the printed circuit board 132 and fingerprint sensor 133 that are welded with integrated circuit 131.Wherein, fingerprint sensor realizes the Primary Component that fingerprint gathers automatically; therefore, fingerprint sensor 133 is connected to the one side towards guard block 102 (fingerprint sensor 133 is positioned at the below of guard block 102 in figure 6) of printed circuit board 132, to gather fingerprint.
In the present embodiment, IC (IntegratedCircuit, integrated circuit) and fingerprint sensor 133 are distributed in the two sides of PCB (PrintedCircuitBoard, printed circuit board), are convenient to the layout of each semiconductor devices in IC.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. based on a control method for fingerprint recognition, it is characterized in that, comprise the following steps:
Obtain the fingerprint image of user and the pressurized information of fingerprint recognition module;
The matching analysis is carried out according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
According to the result of the matching analysis and described pressurized information, terminal is controlled.
2. the control method based on fingerprint recognition according to claim 1, is characterized in that, described pressurized information comprises the pressure be subject to according to described fingerprint recognition module and the voltage signal generated.
3. the control method based on fingerprint recognition according to claim 1, is characterized in that, the process of carrying out the matching analysis according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base comprises the steps:
Pre-service is carried out to described fingerprint image, obtains the crestal line data of fingerprint;
From the fingerprint characteristic needed for described crestal line extracting data fingerprint recognition;
The fingerprint characteristic preserved in the fingerprint characteristic extracted and fingerprint base is carried out the matching analysis.
4. the control method based on fingerprint recognition according to claim 2, is characterized in that, according to the result of the matching analysis and described voltage signal the process that terminal controls is comprised to any one in the following:
When the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is in first voltage range, then power-off operation is carried out to terminal;
When the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is in the second voltage range, then screen locking operation is carried out to terminal;
When the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is in tertiary voltage range of signal, then volume is carried out to terminal and increase operation or volume reduction operation.
5. based on a control system for fingerprint recognition, it is characterized in that, comprising:
Acquisition module, for the pressurized information of the fingerprint image and fingerprint recognition module that obtain user;
Matching analysis module, for carrying out the matching analysis according to the fingerprint characteristic preserved in described fingerprint image and fingerprint base;
Control module, for controlling terminal according to the result of the matching analysis and described pressurized information.
6. the control system based on fingerprint recognition according to claim 5, is characterized in that, described pressurized information comprises the pressure be subject to according to described fingerprint recognition module and the voltage signal generated.
7. the control system based on fingerprint recognition according to claim 5, is characterized in that, described matching analysis module comprises:
Pretreatment module, for carrying out pre-service to described fingerprint image, obtains the crestal line data of fingerprint;
Extraction module, for from the fingerprint characteristic needed for described crestal line extracting data fingerprint recognition;
Analysis module, carries out the matching analysis for the fingerprint characteristic will preserved in the fingerprint characteristic extracted and fingerprint base.
8. the control system based on fingerprint recognition according to claim 6, is characterized in that, comprises any one in the following:
When described matching analysis module judges the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is within the scope of the first voltage signal, then described control module carries out power-off operation to terminal;
When described matching analysis module judges the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is within the scope of the second voltage signal, then described control module carries out screen locking operation to terminal;
When described matching analysis module judges the fingerprint minutiae matching preserved in described fingerprint image and fingerprint base, if described voltage signal is in tertiary voltage range of signal, then described control module is carried out volume to terminal and is increased operation or volume reduction operation.
9. a fingerprint recognition module, is characterized in that, comprises support component, guard block, fingerprint module and cover plate;
Described support component is connected with described guard block and described cover plate respectively, and described support component, described guard block, described cover plate are enclosed to form cavity; Described fingerprint module is arranged on described inside cavity; Described guard block is made up of piezoelectric ceramics.
10. fingerprint recognition module according to claim 9, is characterized in that, described fingerprint module comprises the printed circuit board and fingerprint sensor that are welded with integrated circuit; Described fingerprint sensor is connected to the one side towards described guard block of described printed circuit board.
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| CN106203282A (en) * | 2016-06-30 | 2016-12-07 | 深圳市金立通信设备有限公司 | A kind of fingerprint image processing method and terminal |
| CN106331353A (en) * | 2016-08-26 | 2017-01-11 | 广东欧珀移动通信有限公司 | Mobile terminal-based remote control method and device, and mobile terminal |
| CN106327650A (en) * | 2016-08-31 | 2017-01-11 | 北京新能源汽车股份有限公司 | Electromobile control method and device based on fingerprint recognition and electromobile |
| CN106780872A (en) * | 2016-11-30 | 2017-05-31 | 深圳天珑无线科技有限公司 | A kind of unlocking method and a device |
| WO2018148901A1 (en) * | 2017-02-16 | 2018-08-23 | 深圳市汇顶科技股份有限公司 | Fingerprint button structure, button pressure detection method and electronic device |
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