CN106446786A - Fingerprint identifying method, fingerprint identifying apparatus and terminal device - Google Patents
Fingerprint identifying method, fingerprint identifying apparatus and terminal device Download PDFInfo
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- CN106446786A CN106446786A CN201610769965.6A CN201610769965A CN106446786A CN 106446786 A CN106446786 A CN 106446786A CN 201610769965 A CN201610769965 A CN 201610769965A CN 106446786 A CN106446786 A CN 106446786A
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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
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- Theoretical Computer Science (AREA)
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Abstract
The embodiments of the invention disclose a fingerprint identifying method. The method includes the following steps: determining the current application scenario of a terminal device; based on the corresponding relation between the application scenario and a fingerprint parameter threshold, determining the fingerprint parameter threshold corresponding to the current application scenario of the terminal device; when a fingerprint touch on the fingerprint identifying apparatus is detected, determining the fingerprint parameter of the fingerprint touch; and when the fingerprint parameter is determined to exceed the fingerprint parameter threshold corresponding to the current application scenario, identifying the fingerprint touch is not erroneously made. According to the invention, the fingerprint identifying method, the fingerprint identifying apparatus and the terminal device can change the sensitivity of fingerprint identifying based on different application scenarios and are more user-friendly.
Description
Technical field
The present invention relates to personal identification method, particularly to fingerprint identification method, fingerprint identification device and terminal device.
Background technology
At present, fingerprint identification technology is applied in individual terminal devices widely, and fingerprint identification device gradually becomes
For many terminal devices, the such as standard configuration of mobile phone, panel computer etc..Fingerprint identification device on the market comes from structure at present
Point, it is generally divided into two classes, a class is that band button is mobilizable, for example, be integrated with the function of tonic chord button being arranged at fore shell and fingerprint is known
Other structure.Another kind of is non-movable without button, and be for example fixedly installed on fore shell or back cover exposes metal touch
The structure of plate.
General fingerprint identification device can connect with the CPU of terminal device, after touching or be pressed receiving, triggering
CPU executes bright screen action.For the movable fingerprint with button, have plenty of and need key press to have no progeny in producing, just called out
Awake CPU executes bright screen action, and not needing of having depresses, and fingerprint identification device one is begun to carry out to wake up CPU by touch and holds
Row bright screen action.And for that non-movable fingerprint without button, from the consideration of interaction, due to not having the button can be by
Under, typically only fingerprint identification device once touched carry out wake up CPU execution bright screen action.
As long as if however, touching fingerprint identification device, just carrying out waking up CPU execution bright screen action, can bring and much ask
Topic, such as when summer user puts on very thin trousers, fingerprint identification device touches skin and will trigger bright screen, and makes terminal
Equipment is constantly in high power consumption mode, then this when fingerprint identification device induction sensitivity, user wants to weak one
Point is so that when being placed in trouser pocket, will not produce the false triggering of bright screen.If the input of fingerprint identification device has corresponded to a lot
Other functions, such as, under bright screen state, touch fingerprint identification device and are returned；Touch twice fingerprint identification devices
The application such as carry out taking pictures, and this when, user wants to sensitive spot again, and user operation so will not be allowed invalid.However, it is existing
Fingerprint identification device sensitivity generally fixing it is impossible to adjust sensitivity automatically according to scene, or result in occurring by mistake
Touch-control, or occur the too slow situation of response.
Content of the invention
Embodiments provide a kind of fingerprint identification method, fingerprint identification device and terminal device, can be according to not
Same application scenarios change the sensitivity of fingerprint recognition, more hommization.
On the one hand, provide a kind of fingerprint identification method, have in the terminal device of fingerprint identification device for one, described side
Method includes step：Determine the application scenarios that terminal device is presently in；According to application scenarios pass corresponding with fingerprint parameter threshold value
System determines the application scenarios corresponding fingerprint parameter threshold value that terminal device is presently in；Detect the fingerprint to fingerprint identification device
During touch, determine the fingerprint parameter of described finger touch；And judge described fingerprint parameter exceed described in be presently in should
During with scene corresponding fingerprint parameter threshold value, identify the finger touch that described finger touch is non-false touch.
On the other hand, provide a kind of fingerprint identification device, described fingerprint identification device includes fingerprint collecting unit and Wei Chu
Reason unit, described fingerprint collecting unit is arranged at the surface of fingerprint identification device, for detecting finger touch, described microprocessor list
Unit includes：Application scenarios detecting unit, for determining the application scenarios that terminal device is presently in；Threshold value determination unit, is used for
The corresponding fingerprint of application scenarios that terminal device is presently in is determined according to application scenarios and the corresponding relation of fingerprint parameter threshold value
Parameter threshold；Fingerprint parameter computing unit, for when fingerprint collecting unit detects finger touch, determining described finger touch
Fingerprint parameter；And matching unit, for judge described fingerprint parameter exceed described in the application scenarios that are presently in correspond to
Fingerprint parameter threshold value when, identify described finger touch be non-false touch finger touch.
Another further aspect, provides a kind of terminal device, and described terminal device includes processor and fingerprint identification device.Described finger
Line identifying device includes fingerprint collecting unit and microprocessing unit, and described fingerprint collecting unit is arranged at the table of fingerprint identification device
Face, for detecting finger touch, described microprocessing unit includes：Application scenarios detecting unit, current for determining terminal device
Residing application scenarios；Threshold value determination unit, for determining terminal according to the corresponding relation of application scenarios and fingerprint parameter threshold value
The application scenarios corresponding fingerprint parameter threshold value that equipment is presently in；Fingerprint parameter computing unit, in fingerprint collecting unit
When detecting finger touch, determine the fingerprint parameter of described finger touch；And matching unit, for judging described fingerprint ginseng
When counting the application scenarios corresponding fingerprint parameter threshold value being presently in described in exceeding, identify the finger that described finger touch is non-false touch
Line touches.Described processor is connected with described fingerprint identification device.For determining that fingerprint recognition is tested in described fingerprint identification device
After card passes through, the application scenarios being presently according to terminal device and the action control of finger touch execute corresponding function.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：According at terminal device not
Same application scenarios change for identifying whether the fingerprint parameter threshold value for error touch control, thus changing the sensitivity of fingerprint recognition,
More hommization.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing briefly introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the flow chart of the fingerprint identification method in one embodiment of the invention；
Fig. 2 is the sub-process figure of step S103 in Fig. 1；
Fig. 3 is the structural representation of the fingerprint identification device in one embodiment of the invention；
Fig. 4 is the functional block diagram of the microprocessing unit of fingerprint identification device in one embodiment of the invention；
Fig. 5 is the distributed area of the capacitance of the pixel of fingerprint identification device touch location in one embodiment of the invention
Schematic diagram；
Fig. 6 is the structured flowchart of the subelement of terminal device in one embodiment of the invention.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step ground describes in detail it is clear that described embodiment is only present invention some embodiments, rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of not making creative work
All other embodiment, broadly falls into the scope of protection of the invention.
Please one refer to Fig. 1, be the flow chart of the fingerprint identification method in one embodiment of the invention.Methods described is used for a tool
Have in the terminal device of fingerprint identification device, methods described includes step：
S101：Determine the application scenarios that terminal device is presently in.
Specifically, the described application scenarios determining that terminal device is presently in, including：By detecting residing for terminal device
External environment condition and/or the current applied environment running of described terminal device determine the application scenarios that terminal device is presently in, institute
State application scenarios to include being located at the screen locking scene blocking in environment, be located at the screen locking scene no blocking in environment, non-under bright screen
Payment scene under payment scene, bright screen etc..
S102：The applied field that terminal device is presently in is determined according to the corresponding relation of application scenarios and fingerprint parameter threshold value
Scape corresponding fingerprint parameter threshold value.
In certain embodiments, the corresponding relation of application scenarios and fingerprint parameter threshold value include payment scene under bright screen with
The corresponding relation of the first fingerprint parameter threshold value, it is located at and blocks screen locking scene in environment pass corresponding with the second fingerprint parameter threshold value
Non-pay scene under system, bright screen blocks the screen locking scene in environment with the corresponding relation of the 3rd fingerprint parameter threshold value, positioned at nothing
With the corresponding relation of the 4th fingerprint parameter threshold value, wherein, described first fingerprint parameter threshold value and the second fingerprint parameter threshold value are more than
3rd fingerprint parameter threshold value, described 3rd fingerprint parameter threshold value is more than described 4th fingerprint parameter threshold value, described first fingerprint ginseng
Number threshold value is identical with the second fingerprint parameter threshold value or differs.In certain embodiments, described first fingerprint parameter threshold value is
40%, described second fingerprint parameter threshold value is 30%, described 3rd fingerprint parameter threshold value is 15%, described 4th fingerprint parameter threshold
It is worth for 5%.
S103：When detecting the finger touch to fingerprint identification device, determine the fingerprint parameter of described finger touch.
In one embodiment, the fingerprint parameter determining described finger touch is for determining with described finger touch in fingerprint recognition
The related fingerprint parameter of the capacitance of the pixel in device contact area.
S104：Judge described fingerprint parameter exceed described in the application scenarios corresponding fingerprint parameter threshold value that is presently in
When, identify the finger touch that described finger touch is non-false touch.Wherein, described fingerprint parameter exceed described in the application that is presently in
Scene corresponding fingerprint parameter threshold value refers to described fingerprint parameter and is more than or equal to described fingerprint parameter threshold value.Described identification institute
State the finger touch that finger touch is non-false touch to refer to：Determine that described finger touch is the conscious touch of user, and respond
Described finger touch produces interrupt signal, and the execution of triggering terminal equipment is corresponding to be operated, and bright screen for example pointed out hereinafter etc. operates.
Wherein, described fingerprint parameter threshold value is related to the sensitivity of unlocked by fingerprint, different application scenarios to should have not
Same fingerprint parameter threshold value, i.e. the sensitivity of different unlocked by fingerprints.In the present invention, by the application of predetermined terminal device
Scene, to the fingerprint parameter threshold value that should determine that current application scene, when fingerprint identification device is touched, according to current application field
Scape corresponding fingerprint parameter threshold value goes to mate the fingerprint parameter of current touch to determine whether to identify successfully so that fingerprint recognition fills
The sensitivity put is adapted with current application scene.
Wherein, in certain embodiments, step S103 can also execute before step S101, i.e. is detecting fingerprint
After identifying device is touched, then determine the fingerprint parameter threshold value of current application scene, then correspond to further according to current application scene
Fingerprint parameter threshold value go mate current touch fingerprint parameter, to determine whether to identify successfully.
Wherein, in certain embodiments, described fingerprint identification method also includes step：
By the threshold value of false triggering in finger touch sensitivity requirement according to application scenarios or described application scenarios, set in advance
Put the corresponding relation of each application scenarios and fingerprint parameter threshold value.
For example, for the payment scene under bright screen, due to the needs of safety of payment, it is desirable to sensitivity low, therefore as far as possible
The fingerprint parameter threshold value of setting is the first maximum fingerprint parameter threshold value.For being located at the screen locking scene blocked in environment, for example
Terminal device is placed in pocket, then be in order to avoid error touch control leads to bright screen, can be covered in fingerprint button by a cotton
Surface hand determines fingerprint parameter value by carrying out test above, and the threshold values of one this fingerprint parameter value a little higher than of setting is as right
The the second fingerprint parameter threshold value answered.For the non-pay scene under bright screen, now may be by fingerprint identification device input control
Manufacture-illegal pays the operational order of application, such as, under bright screen, click touch fingerprint identification device, return system desktop, at this time, spirit
Sensitivity can be little higher, is set to the 3rd fingerprint parameter threshold value.Block screen locking scene in environment for positioned at nothing, now
Because terminal device is screen locking, then the touch to fingerprint identification device will be unblock, at this time in order to improve unblock speed, permissible
By sensitivity arrange higher, that is, be set to the 4th fingerprint parameter threshold value.
Refer to Fig. 2, be the sub-process figure of step S103, described step S103 specifically includes：
S1031：Obtain fingerprint identification device by the capacitance of all pixels point of touch location.
Wherein, fingerprint identification device includes the collection point of some matrix form distributions, described some matrix form distributions
Collection point is the pixel on fingerprint identification device.When user touches described fingerprint identification device, each touch all can have one
Corresponding contact area, that is, described fingerprint identification device is by touch location, positioned at the electric capacity meeting by the pixel in touch location
Produce capacitance because of touching.Obtain in step S1031 is the capacitance that the described pixel being touched produces.
S1032：Determine some target pixel points as analysis object.
In one embodiment, described " determining some target pixel points as analysis object " includes：According to by touch position
The capacitance of all pixels point put determines the distributed area of the capacitance of all pixels point；And exceeding the picture of predetermined ratio
When the capacitance of vegetarian refreshments is located in the range of a distributed area, described capacitance is located at the pixel in the range of described distributed area
As described some target pixel points.
In another embodiment, described " determining some target pixel points as analysis object " includes：By fingerprint recognition
Device is by all pixels point of touch location as described some target pixel points.
S1033：Determine maximum capacitor value C1 in the capacitance of described some target pixel points.
S1034：Determine average capacitance value C2 of the capacitance of described some target pixel points.
In one embodiment, described " determining average capacitance value C2 of the capacitance of described some target pixel points " includes：
By being ranked up to the capacitance of all target pixel points, determine that the capacitance being located at 50% point of position is described average capacitance value
C2.Wherein, the capacitance of 50% point of position refers to the capacitance of target pixel points is ranked up, and determines that sequence is located at middle
Target pixel points capacitance as described average capacitance value C2.
In other embodiments, described " determining average capacitance value C2 of the capacitance of described some target pixel points " wraps
Include：Calculate the geometrical mean of the capacitance of all target pixel points or arithmetic mean of instantaneous value as described average capacitance value C2.
S1035：Calculate the fingerprint parameter Z1 of described finger touch according to formula Z1=(C1-C2)/C2.
Refer to Fig. 3, be the structural representation of the fingerprint identification device 1 in an embodiment.Described fingerprint identification device 1 should
For in a terminal device.Described fingerprint identification device 1 includes fingerprint collecting unit 10 and microprocessing unit 20.
Described fingerprint collecting unit 10 is arranged at the surface of fingerprint identification device 1, can be a capacitive touch pad.Described
Fingerprint collecting unit 1 is used for detecting the finger touch of user.As shown in figure 3, described fingerprint collecting unit 10 includes M*N pixel
Point P1, each pixel P1 are used for response and touch and produce corresponding capacitance.Wherein, M and N is the natural number more than 1, for example
M can be able to be 56 for 192, N, and described fingerprint collecting unit 10 is one 192 row, the capacitive type touch pad of the pixel P1 of 56 row.
Described microprocessing unit 20 and fingerprint collecting unit 10 couple, for receiving what described fingerprint collecting unit 10 produced
Capacitance.Wherein, microprocessing unit 20 and all pixels point P1 of fingerprint collecting unit 10 couple, and receive each pixel P1
The capacitance producing.
Wherein, the feature of fingerprint we define the checking to carry out fingerprint of two category features of fingerprint：General characteristic drawn game
Portion's feature.General characteristic refers to those features being directly just observed that with human eye, including：Basic grain pattern is ring-like
(loop), arcuate (arch), screw type (whorl).Local feature is because fingerprint lines is not continuous, smooth straight
, but frequent appearance interruption, bifurcated or discounting.These breakpoints, bifurcation and turning point are known as " node ".It is exactly these sections
Point provides the confirmation nodal properties of fingerprint uniqueness, that is, the local feature of fingerprint.
When user's finger is pressed on fingerprint identification device 1 surface, the pixel P1 in touch location is with finger surface
Between form capacitance, capacitance can be different according to the peak valley difference of fingerprint because referring to summit with pixel point distance closely, and
Referring to paddy can be a little further.In certain embodiments, microprocessing unit 20 can be big according to the capacitance of the pixel P1 in touch location
One rough three-dimensional surface of little formation, simulates fingerprint image by this three-dimensional surface.
Wherein, as shown in figure 3, described fingerprint identification device 1 may also include analog-digital converter (A/D converter；analog
To digital converter) 30, described analog-digital converter 30 be connected to fingerprint collecting unit 10 and microprocessing unit 20 it
Between, the capacitance of the analog signal form for producing pixel P is converted to the capacitance of digital signal form, and is sent to
Described microprocessing unit 20.
See also Fig. 4, in one embodiment, described microprocessing unit 20 includes application scenarios detecting unit 201, threshold
Value determining unit 202, fingerprint parameter computing unit 203, matching unit 204 and threshold setting unit 205.
Described application scenarios detecting unit 201 is used for determining the application scenarios that terminal device is presently in.Specifically, described
Application scenarios detecting unit 201 passes through to detect the external environment condition and/or the current operation of described terminal device residing for terminal device
Applied environment determines the application scenarios that terminal device is presently in.Described application scenarios include being located at the screen locking field blocking in environment
Scape, it is located at and no blocks the screen locking scene in environment, the non-pay scene under bright screen, the payment scene under bright screen.In an embodiment
In, described application scenarios detecting unit 201 includes luminance sensor, for detecting the external environment condition brightness of terminal device, institute
State whether application scenarios detecting unit 201 is unblock or locks according to the external environment condition of terminal device and terminal device, determine
Terminal device is located at the screen locking scene blocking in environment, is located at screen locking scene no blocking in environment etc..
Described threshold value determination unit 202 is used for determining that terminal sets according to the corresponding relation of application scenarios and fingerprint parameter threshold value
The standby application scenarios corresponding fingerprint parameter threshold value being presently in.
In certain embodiments, the corresponding relation of application scenarios and fingerprint parameter threshold value include payment scene under bright screen with
The corresponding relation of the first fingerprint parameter threshold value, it is located at and blocks screen locking scene in environment pass corresponding with the second fingerprint parameter threshold value
Non-pay scene under system, bright screen blocks the screen locking scene in environment with the corresponding relation of the 3rd fingerprint parameter threshold value, positioned at nothing
With the corresponding relation of the 4th fingerprint parameter threshold value, wherein, described first fingerprint parameter threshold value and the second fingerprint parameter threshold value are more than
3rd fingerprint parameter threshold value, described 3rd fingerprint parameter threshold value is more than described 4th fingerprint parameter threshold value, described first fingerprint ginseng
Number threshold value is identical with the second fingerprint parameter threshold value or differs.In certain embodiments, described first fingerprint parameter threshold value is
40%, described second fingerprint parameter threshold value is 30%, described 3rd fingerprint parameter threshold value is 15%, described 4th fingerprint parameter threshold
It is worth for 5%.
Described fingerprint parameter computing unit 203 is used for, when fingerprint collecting unit 1 detects finger touch, determining described finger
The fingerprint parameter that line touches.In one embodiment, the fingerprint parameter determining described finger touch is for determining and described finger touch
The related fingerprint parameter of the capacitance of the pixel in fingerprint identification device contact area.
Specifically, described fingerprint parameter computing unit 203 determines the fingerprint parameter of described finger touch, including：Acquisition refers to
Line identifying device 1 is by the capacitance of all pixels point P1 of touch location；Determine some target pixel points as analysis object
P1；Determine maximum capacitor value C1 in the capacitance of described some target pixel points P1；Determine described some target pixel points P1
Capacitance average capacitance value C2；And the fingerprint parameter of described finger touch is calculated according to formula Z1=(C1-C2)/C2
Z1.
Wherein, fingerprint parameter Z1 can represent the concavo-convex value of skin surface, and fingerprint parameter Z1 is bigger, and now fingerprint lines is described
Deeper, fingerprint parameter Z1 is less, and the now very gently very light touching of the more shallow fingerprint in other words of lines is described；If this value little to certain
Degree, illustrates it is not now that fingerprint is touching fingerprint identification device 1, because it is smooth for being equivalent to skin, does not have concave-convex, be
False touch is touched.Therefore, the authenticity of finger touch generation can also be represented by the above-mentioned fingerprint parameter Z1 calculating, i.e. represent
Whether described finger touch is false touch.
See also Fig. 5, in one embodiment, described " determining some target pixel points as analysis object " bag
Include：Distributed area according to the capacitance being determined all pixels point P1 by the capacitance of all pixels point P1 of touch location；With
And exceed the capacitance of pixel P1 of predetermined ratio be located at a distributed area in the range of when, by described capacitance be located at described
Pixel P1 in the range of distributed area is as described some target pixel points P1.
As shown in figure 5, illustrating by the distribution of capacitance values situation of the pixel P1 in touch location, transverse axis is electric capacity
Value, vertical pivot is the number of the pixel with described capacitance.Described fingerprint parameter computing unit 203 pass through statistical analysis each
The capacitance of pixel, draws the distributed area of the capacitance of all pixels point as shown in Figure 5, and determines and exceed predetermined ratio
Then capacitance is located at the pixel in the range of described distributed area and makees by capacitance the be located at distributed area scope of pixel
For described some target pixel points.
For example, as shown in figure 5, the pixel being located in the distribution of capacitance values interval of 0.2-0.8 has exceeded predetermined ratio, example
As exceeded 98%, then the pixel that capacitance is located in the distributed area of 0.2-0.8 is determined by fingerprint parameter computing unit 203
For target pixel points.Wherein, the unit of described capacitance can be PF (pico farad), and specific capacitance unit can be according to touch-sensitive
Degree determines.
In another embodiment, described " determining some target pixel points as analysis object " includes：By fingerprint recognition
Device is by all pixels point of touch location as described some target pixel points.
In one embodiment, described " determining average capacitance value C2 of the capacitance of described some target pixel points " includes：
By being ranked up to the capacitance of all target pixel points, determine that the capacitance being located at 50% point of position is described average capacitance value
C2.Wherein, the capacitance of 50% point of position refers to the capacitance of target pixel points is ranked up, and determines that sequence is located at middle
Target pixel points capacitance as described average capacitance value C2.
In other embodiments, described " determining average capacitance value C2 of the capacitance of described some target pixel points " wraps
Include：Calculate the geometrical mean of the capacitance of all target pixel points or arithmetic mean of instantaneous value as described average capacitance value C2.
Described matching unit 204 be used for judge described fingerprint parameter exceed described in the application scenarios that are presently in corresponding
During fingerprint parameter threshold value, identify the finger touch that described finger touch is non-false touch.Wherein, described fingerprint parameter exceedes described working as
The corresponding fingerprint parameter threshold value of front residing application scenarios refers to described fingerprint parameter and is more than or equal to described fingerprint parameter threshold
Value
Wherein, described fingerprint parameter threshold value is related to the sensitivity of unlocked by fingerprint, different application scenarios to should have not
Same fingerprint parameter threshold value, i.e. the sensitivity of different finger touch.In the present invention, by the application of predetermined terminal device
Scene, to the fingerprint parameter threshold value that should determine that current application scene, when fingerprint identification device is touched, according to current application field
Scape corresponding fingerprint parameter threshold value goes to mate the fingerprint parameter of current touch to determine whether as mistaken touch so that fingerprint recognition fills
Put 1 sensitivity and current application scene is adapted.
Described threshold setting unit 205 is used for finger touch sensitivity requirement or described application scenarios according to application scenarios
The middle threshold value by false triggering, pre-sets the corresponding relation of each application scenarios and fingerprint parameter threshold value.
For example, for the payment scene under bright screen, due to the needs of safety of payment, it is desirable to sensitivity low as far as possible, it is to avoid
The unconscious error touch control of user, therefore, the fingerprint parameter threshold value of the payment scene under bright screen is set to by threshold setting unit 205
The first maximum fingerprint parameter threshold value.Thus, in the payment scene under bright screen, only when fingerprint parameter is more than described first finger
During line parameter threshold, just determine it is the finger touch of non-false touch, just can carry out the fingerprint contrast coupling of next step, and mate into
Carry out fingerprint payment after work(.Thus avoiding user imprudence the finger paying for fingerprint may be placed on fingerprint identification device
The situation of payment is result on 1.
Again for example, for being located at the screen locking scene blocked in environment, such as terminal device be placed in pocket and screen locking field
Scape, can cover on the surface of fingerprint identification device 1 by a cotton, then determine fingerprint with hand by carrying out test above
Parameter value, what threshold setting unit 205 can respond user is operated into setting pattern, obtains described fingerprint parameter value and arranges one
The threshold values of individual this fingerprint parameter value a little higher than is as corresponding second fingerprint parameter threshold value.For the non-pay scene under bright screen,
Now may be by the operational order that fingerprint identification device input controls non-pay application, such as, under bright screen, click touch and refer to
Line identifying device, return system desktop, at this time, sensitivity can be little higher, and threshold setting unit 205 is by under bright screen
The fingerprint parameter threshold value of non-pay field is set to the 3rd fingerprint parameter threshold value.For the screen locking scene blocked positioned at nothing in environment,
Now because terminal device is screen locking, then the touch to fingerprint identification device will be for unlocking bright screen, at this time in order to improve bright screen
Speed, can by sensitivity arrange higher, that is, nothing is blocked the fingerprint ginseng of screen locking scene in environment by threshold setting unit 205
Number threshold value is set to the 4th minimum fingerprint parameter threshold value.
Wherein, described microprocessing unit 20 can be microprocessor, single-chip microcomputer, digital signal processor, application-specific collection
Become circuit (application-specific integrated circuit, ASIC), or one or more for control more than
The integrated circuit of scheme processes execution.
Described application scenarios detecting unit 201, threshold value determination unit 202, fingerprint parameter computing unit 203, matching unit
204 and threshold setting unit 205 can be for the hardware circuit unit in microprocessing unit 20 or burning in microprocessing unit 20
Programmed instruction.
Described fingerprint identification device 1 can be fingerprint chip, and described fingerprint collecting unit 10, microprocessing unit 20 and modulus turn
Parallel operation is the hardware configuration constituting described fingerprint chip.For example, fingerprint collecting unit 10 is the electricity positioned at fingerprint chip outer surface
Appearance formula touch pad.
Described fingerprint identification device 1 can be formed by BGA (Ball Grid Array, welded ball array encapsulates) technology encapsulation,
Or formed by the encapsulation of LGA (Land Grid Array, Background Grid array packages) technology.
Refer to Fig. 6, be the structured flowchart of terminal device 100, described terminal device 100 includes aforesaid fingerprint recognition dress
Put 1 and processor 2.
Described processor 2 is connected with fingerprint identification device 1, for determining that fingerprint recognition is tested in described fingerprint identification device 1
After card passes through, the application scenarios being presently according to terminal device 100 and the action control of finger touch execute corresponding function.
Specifically, after described fingerprint identification device 1 identification finger touch is the finger touch of non-false touch, processor 2 is controlled
The following function of system execution：
Payment scene under the application scenarios of described terminal device 100 are for bright screen for the processor 2, and the action of finger touch
For, during any touch contact, controlling and carrying out fingerprint payment verification, and complete to pay after being verified.
If the application scenarios of described terminal device 100 are positioned at blocking in environment or the non-screen locking scene blocked in environment,
And the action of finger touch is for, during any touch contact, processor 10 controls described terminal device 100 bright screen.
If the non-pay scene under the application scenarios bright screen of described terminal device 100, and the action of finger touch is default
During touch action, processor 2 controls the corresponding corresponding function of described terminal device execution.For example, described default touch action includes
Click touch and double-clicking to touch, non-pay scene under application scenarios are for bright screen for the processor 2 and default touch action is to click
During touch, display interface is controlled to be back to system desktop.Non-pay scene under application scenarios are for bright screen for the processor 2 and default
When touch action is to double-click to touch, execution is controlled to start the function of the camera of terminal device.
Wherein, the non-pay scene under described bright screen refers to terminal device 100 and is in bright screen, and is not at payment environment
In application scenarios, such as unlatching webpage under bright screen, open the scenes such as instant communication software.
Wherein, when described fingerprint identification device 1 identifies the finger touch that finger touch is non-false touch, produce in an identification
Disconnected, described processor 2 receives the finger touch confirming that finger touch is non-false touch of having no progeny in described identification, and analyzes described finger
Line touches using as input.Wherein, the quantity that the identification that described processor 2 passes through to receive in the given time is interrupted is defined as
Click touch or double-click touch.
Wherein, described processor 1 can obtain terminal device by the application scenarios detecting unit 201 from fingerprint identification device 1
100 application scenarios being presently in, the application scenarios that terminal device 100 is presently in also can voluntarily be detected by described processor 1.
As shown in fig. 6, described terminal device 100 also includes memory 3, when application scenarios detecting unit 201, threshold value determine
When unit 202, fingerprint parameter computing unit 203, matching unit 204 and threshold setting unit 205 are programmed instruction, described application
Scene detection unit 201, threshold value determination unit 202, fingerprint parameter computing unit 203, matching unit 204 and threshold setting unit
205 corresponding programmed instruction also can be stored in memory 3, called by the processor 20 in fingerprint identification device 1 and execute and reality
Now fingerprint identification method as shown in Figure 1-2.
Wherein, memory 3 can be read-only storage (read-only memory, ROM) or can store static information and
The other kinds of static storage device of instruction, random access memory (random access memory, RAM) or can deposit
The other kinds of dynamic memory of storage information and instruction or EEPROM
(Electrically Erasable Programmable Read-Only Memory, EEPROM), read-only optical disc (Compact
Disc Read-Only Memory, CD-ROM) or other optical disc storage, laser disc storage (inclusion compression laser disc, laser disc, light
Dish, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carry or
Storage have instruction or data structure form desired program code and can by any other medium of computer access, but
Not limited to this.Memory can be individually present, and is connected with processor by bus.Memory can also be integrated with processor
Together.
Wherein, processor 2 can also be general central processor (CPU), microprocessor, single-chip microcomputer, Digital Signal Processing
Device, ASIC (application-specific integrated circuit, ASIC), or one or many
The individual integrated circuit for controlling above scheme program performing.
Obviously, described terminal device 100 also includes other hardware configurations, for example, include microphone, display screen etc., due to
Present invention improvement is unrelated, therefore here does not repeat.
In addition, can be integrated in a processing unit in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be to be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If described integrated unit is realized and as independent production marketing or use using in the form of SFU software functional unit
When, can be stored in a computer-readable access to memory.Based on such understanding, technical scheme substantially or
Person say part or this technical scheme that prior art is contributed all or part can in the form of software product body
Reveal to come, this computer software product is stored in a memory, include some instructions use so that a computer equipment
The all or part of (can be personal computer, server or network equipment etc.) execution each embodiment methods described of the present invention
Step.And aforesaid memory includes：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory
(RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. are various can be with the medium of store program codes.
In previous embodiment, each step method flow process can be set based on the fingerprint identification device 1 shown in Fig. 3 and 6 and terminal
Standby 100 structure is realized.
Wherein, described terminal device 100 can be the intelligent terminal such as mobile phone, panel computer, notebook computer.
The embodiment of the present invention also provides a kind of computer-readable storage medium, and wherein, this computer-readable storage medium can be stored with journey
Sequence, for example store described application scenarios detecting unit 201 for programmed instruction, threshold value determination unit 202, fingerprint parameter calculate single
Unit 203, matching unit 204 and threshold setting unit 205.Described program is called when executing, for realizing including said method
The part or all of step of any networking control method described in embodiment.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because
According to the present invention, some steps can be carried out using other orders or simultaneously.Secondly, those skilled in the art also should know
Know, embodiment described in this description belongs to preferred embodiment, involved action and the module not necessarily present invention
Necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion described in detail in certain embodiment
Point, may refer to the associated description of other embodiment.
It should be understood that disclosed device in several embodiments provided herein, can be by another way
Realize.For example, device embodiment described above is only the schematically division of for example described unit, is only one kind
Division of logic function, actual can have other dividing mode when realizing, for example multiple units or assembly can in conjunction with or can
To be integrated into another system, or some features can be ignored, or does not execute.Another, shown or discussed each other
Coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or communication connection,
It can be electrical or other form.
The described unit illustrating as separating component can be or may not be physically separate, show as unit
The part showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.The mesh to realize this embodiment scheme for some or all of unit therein can be selected according to the actual needs
's.
It should be noted that in above-mentioned terminal device embodiment, included unit simply enters according to function logic
Row divides, but is not limited to above-mentioned division, as long as being capable of corresponding function；In addition, each functional unit
Specific name also only to facilitate mutual distinguish, is not limited to protection scope of the present invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in above-mentioned each method embodiment
The program that can be by completes come the hardware to instruct correlation, and corresponding program can be stored in a kind of computer-readable recording medium
In, storage medium mentioned above can be read-only storage, disk or CD etc..
These are only the present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope that the embodiment of the present invention discloses, the change that can readily occur in or replace
Change, all should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be defined.
Claims (20)
1. a kind of fingerprint identification method, has in the terminal device of fingerprint identification device it is characterised in that methods described for one
Including step：
Determine the application scenarios that terminal device is presently in；
Determine that the application scenarios that terminal device is presently in are corresponding according to application scenarios and the corresponding relation of fingerprint parameter threshold value
Fingerprint parameter threshold value；
When detecting the finger touch to fingerprint identification device, determine the fingerprint parameter of described finger touch；And
Judge described fingerprint parameter exceed described in be presently in application scenarios corresponding fingerprint parameter threshold value when, identification is described
Finger touch is the finger touch of non-false touch.
2. fingerprint identification method according to claim 1 is it is characterised in that the fingerprint of the described finger touch of described determination is joined
Number includes：Determine the related fingerprint ginseng of the capacitance of the pixel in fingerprint identification device contact area to described finger touch
Number.
3. fingerprint identification method according to claim 2 is it is characterised in that described step " determines described finger touch
Fingerprint parameter " includes：
Obtain fingerprint identification device by the capacitance of all pixels point of touch location；
Determine some target pixel points as analysis object；
Determine maximum capacitor value C1 in the capacitance of described some target pixel points；
Determine average capacitance value C2 of the capacitance of described some target pixel points；And
Calculate the fingerprint parameter Z1 of described finger touch according to formula Z1=(C1-C2)/C2.
4. fingerprint identification method according to claim 3 is it is characterised in that described step " determines as analysis object
Some target pixel points " include：
Distributed area according to the capacitance being determined all pixels point by the capacitance of all pixels point of touch location；And
Exceed the capacitance of pixel of predetermined ratio be located at a distributed area in the range of when, by described capacitance be located at described
Pixel in the range of distributed area is as described some target pixel points.
5. fingerprint identification method according to claim 3 is it is characterised in that described step " determines as analysis object
Some target pixel points " include：
Using fingerprint identification device by all pixels point of touch location as described some target pixel points.
6. the fingerprint identification method according to claim 4 or 5 is it is characterised in that described step " determines described some targets
Average capacitance value C2 of the capacitance of pixel " includes：
By being ranked up to the capacitance of all pixels point, determine that the capacitance being located at 50% point of position is described average capacitance value
C2.
7. fingerprint identification method according to claim 2 is it is characterised in that described step " detects the current institute of terminal device
The application scenarios at place " include：
Terminal is determined by the external environment condition residing for detecting terminal device and/or the current applied environment running of described terminal device
The application scenarios that equipment is presently in, described application scenarios include being located at the screen locking scene blocking in environment, are located at and no block ring
Payment scene under non-pay scene under screen locking scene in border, bright screen, bright screen.
8. fingerprint identification method according to claim 7 is it is characterised in that described application scenarios and fingerprint parameter threshold value
Corresponding relation includes the corresponding relation of payment scene under bright screen and the first fingerprint parameter threshold value, is located at the screen locking blocking in environment
Non-pay scene under the corresponding relation of scene and the second fingerprint parameter threshold value, bright screen is closed with the corresponding of the 3rd fingerprint parameter threshold value
System, the corresponding relation positioned at the screen locking scene no blocked in environment and the 4th fingerprint parameter threshold value, wherein, described first fingerprint ginseng
Number threshold value and the second fingerprint parameter threshold value are more than the 3rd fingerprint parameter threshold value, and described 3rd fingerprint parameter threshold value is more than the described 4th
Fingerprint parameter threshold value, described first fingerprint parameter threshold value is identical with the second fingerprint parameter threshold value or differs.
9. the fingerprint identification method according to any one of claim 1-8 is it is characterised in that methods described also includes walking
Suddenly：
By the threshold value of false triggering in finger touch sensitivity requirement according to application scenarios or described application scenarios, pre-set each
Individual application scenarios and the corresponding relation of fingerprint parameter threshold value.
10. a kind of fingerprint identification device is it is characterised in that include fingerprint collecting unit and microprocessing unit, described fingerprint collecting
Unit is arranged at the surface of fingerprint identification device, and for detecting finger touch, described microprocessing unit includes：
Application scenarios detecting unit, for determining the application scenarios that terminal device is presently in；
According to the corresponding relation of application scenarios and fingerprint parameter threshold value, threshold value determination unit, for determining that terminal device is presently in
Application scenarios corresponding fingerprint parameter threshold value；
Fingerprint parameter computing unit, for when fingerprint collecting unit detects finger touch, determining the finger of described finger touch
Line parameter；And
Matching unit, for judge described fingerprint parameter exceed described in the application scenarios corresponding fingerprint parameter threshold that is presently in
During value, identify the finger touch that described finger touch is non-false touch.
11. fingerprint identification devices according to claim 10 are it is characterised in that described fingerprint collecting unit includes several
Pixel, each pixel is used for response and touches and produce corresponding capacitance, and described fingerprint parameter computing unit is used for determining
The fingerprint parameter related to the capacitance of pixel in fingerprint identification device contact area for the described finger touch.
12. fingerprint identification devices according to claim 10 are it is characterised in that described fingerprint parameter computing unit " determines
The fingerprint parameter of described finger touch " includes：
Obtain fingerprint identification device by the capacitance of all pixels point of touch location；
Determine some target pixel points as analysis object；
Determine maximum capacitor value C1 in the capacitance of described some target pixel points；
Determine average capacitance value C2 of the capacitance of described some target pixel points；And
Calculate the fingerprint parameter Z1 of described finger touch according to formula Z1=(C1-C2)/C2.
13. fingerprint identification devices according to claim 12 are it is characterised in that described fingerprint parameter computing unit determines work
Some target pixel points for analyzing object include：
Distributed area according to the capacitance being determined all pixels point by the capacitance of all pixels point of touch location；And
Exceed the capacitance of pixel of predetermined ratio be located at a distributed area in the range of when, by described capacitance be located at described
Pixel in the range of distributed area is as described some target pixel points.
14. fingerprint identification devices according to claim 12 are it is characterised in that described fingerprint parameter computing unit " determines
Some target pixel points as analysis object " include：Using fingerprint identification device by all pixels point of touch location as institute
State some target pixel points.
15. fingerprint identification devices according to claim 13 or 14 are it is characterised in that described fingerprint parameter computing unit is true
Average capacitance value C2 of the capacitance of fixed described some target pixel points includes：
The capacitance of all pixels point is ranked up, determines that the capacitance being located at 50% point of position is described average capacitance value C2.
16. fingerprint identification devices according to claim 11 are it is characterised in that the detecting of described application scenarios detecting unit is whole
The application scenarios that end equipment is presently in include：
Described application scenarios detecting unit is currently transported by the external environment condition residing for detecting terminal device and/or described terminal device
The applied environment of row determines the application scenarios that terminal device is presently in, and described application scenarios include being located at the lock blocking in environment
Screen scene, it is located at and no blocks the screen locking scene in environment, the non-pay scene under bright screen, the payment scene under bright screen.
17. fingerprint identification devices according to claim 16 are it is characterised in that described application scenarios and fingerprint parameter threshold value
Corresponding relation include the corresponding relation of payment scene under bright screen and the first fingerprint parameter threshold value, be located at the lock blocking in environment
Non-pay scene under the corresponding relation of screen scene and the second fingerprint parameter threshold value, bright screen is corresponding with the 3rd fingerprint parameter threshold value
Relation, the corresponding relation positioned at the screen locking scene no blocked in environment and the 4th fingerprint parameter threshold value, wherein, described first fingerprint
Parameter threshold and the second fingerprint parameter threshold value are more than the 3rd fingerprint parameter threshold value, and described 3rd fingerprint parameter threshold value is more than described the
Four fingerprint parameter threshold values, described first fingerprint parameter threshold value is identical with the second fingerprint parameter threshold value or differs.
18. fingerprint identification devices according to any one of claim 10-17 are it is characterised in that described microprocessing unit
Also include threshold setting unit, described threshold setting unit is used for unblock sensitivity requirement or described application according to application scenarios
By the threshold value of false triggering in scene, pre-set the corresponding relation of each application scenarios and fingerprint parameter threshold value.
A kind of 19. terminal devices are it is characterised in that described terminal device includes processor and as any one of claim 10-18
Described fingerprint identification device, described processor is connected with described fingerprint identification device, for knowing in described fingerprint identification device
After not described finger touch is the finger touch of non-false touch, the application scenarios that are presently according to terminal device and finger touch
Action control executes corresponding function.
20. terminal devices according to claim 19 are it is characterised in that described processor is used for described fingerprint identification device
After determining that fingerprint recognition is verified, execution corresponding function as follows：
Payment scene under the application scenarios of described terminal device are for bright screen for the described processor, and the action of finger touch is to appoint
When meaning touches contact, control and carry out fingerprint payment verification；
Described processor is positioned at blocking environment or the non-screen locking scene blocked in environment in the application scenarios of described terminal device,
And the action of finger touch is for, during any touch contact, controlling described terminal device to carry out bright screen；
Described processor is non-pay scene under bright screen in the application scenarios of described terminal device, and the action of finger touch is
During default touch action, control the corresponding corresponding function of described terminal device execution.
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| CN201610769965.6A CN106446786B (en) | 2016-08-30 | 2016-08-30 | Fingerprint identification method, fingerprint identification device and terminal device |
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| CN201610769965.6A CN106446786B (en) | 2016-08-30 | 2016-08-30 | Fingerprint identification method, fingerprint identification device and terminal device |
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| CN111382404B (en) * | 2018-12-27 | 2023-12-29 | 珠海市魅族科技有限公司 | Fingerprint false touch prevention method, system, terminal equipment and readable storage medium |
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| WO2020156034A1 (en) * | 2019-01-30 | 2020-08-06 | Oppo广东移动通信有限公司 | Fingerprint input method and related device |
| CN113253878A (en) * | 2021-06-25 | 2021-08-13 | 深圳小米通讯技术有限公司 | Touch screen report point determining method and device, electronic equipment and storage medium |
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