CN105893955A - Fingerprint recognition device and method - Google Patents

Fingerprint recognition device and method Download PDF

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Publication number
CN105893955A
CN105893955A CN201610192851.XA CN201610192851A CN105893955A CN 105893955 A CN105893955 A CN 105893955A CN 201610192851 A CN201610192851 A CN 201610192851A CN 105893955 A CN105893955 A CN 105893955A
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China
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subregion
fingerprint recognition
touch operation
recognition region
area
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CN105893955B (en
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李成
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/96Management of image or video recognition tasks
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1365Matching; Classification

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Collating Specific Patterns (AREA)
  • Image Input (AREA)

Abstract

The invention discloses a fingerprint recognition device comprising an obtaining module, a first computing module, a second computing module, and an acquiring module. The obtaining module is used for obtaining, when detecting a touch operation input into a fingerprint recognition area, various subareas, corresponding to the touch operation, in the fingerprint recognition area. The first computing module is used for obtaining, when detecting the touch operation input into the fingerprint recognition area, the various subareas, corresponding to the touch operation, in the fingerprint recognition area. The second computing module is used for computing, according to a computed relative distance, the touch area, of the touch operation, in the fingerprint recognition area. The acquiring module is used for acquiring, when the computed touch area reaches preset area, fingerprint information corresponding to the touch operation to recognize the fingerprint. The invention further discloses a fingerprint recognition method. The fingerprint recognition device and method prevents fingerprint erroneous alarm and increase fingerprint recognition accuracy.

Description

Fingerprint identification device and method
Technical field
The present invention relates to fingerprint technique field, particularly relate to a kind of fingerprint identification device and method.
Background technology
Along with the development of fingerprint technique is with ripe, increasing terminal is equipped with fingerprint device and refers to Stricture of vagina identification, described fingerprint device i.e. fingerprint recognition region, present fingerprint recognition, it is essentially all and passes through The response sensitivity of fingerprint device determines, when the response sensitivity in fingerprint device is too high, if imprudence In the marginal area of fingerprint device, input touch operation, i.e. maloperation touch fingerprint device, also can enter Row fingerprint recognition, therefore, this fingerprint recognition mode, the false to fingerprint of the fingerprint device easily occurs, Cause fingerprint recognition inaccurate.
Summary of the invention
Present invention is primarily targeted at a kind of fingerprint identification device of proposition and method, it is intended to solve present Fingerprint recognition mode, the false to fingerprint of the fingerprint device easily occurs, causes fingerprint recognition inaccurate Technical problem.
For achieving the above object, a kind of fingerprint identification device that the present invention provides, described fingerprint identification device Including:
Acquisition module, for when touch operation based on the input of fingerprint recognition region being detected, obtaining institute State each sub regions that touch operation is corresponding in described fingerprint recognition region;
First computing module, for when touch operation based on the input of fingerprint recognition region being detected, obtaining Take each sub regions that described touch operation is corresponding in described fingerprint recognition region;
Second computing module, for according to the described relative distance calculated, calculating described touch operation in institute State the touch-control area in fingerprint recognition region;
Acquisition module, during for reaching preset area at the described touch-control area calculated, gathers described touch The finger print information of operation correspondence is to carry out fingerprint recognition.
Alternatively, described second computing module includes:
First determines submodule, for determining the area of each described subregion;
First obtains submodule, for obtaining the default sensitivity of described center subregion;
Calculating sub module, for the relative distance according to subregion each described and described center subregion, The area of each described subregion and the product of the default sensitivity of described center subregion, calculate each The response sensitivity that described subregion is corresponding;
Integration submodule, for quadraturing the response sensitivity that subregion each described is corresponding, obtains institute State touch operation touch-control area in described fingerprint recognition region.
Alternatively, can being carried according to described processor by terminal handler of the area of each described subregion Operand and/or idle operand divide, wherein, operand that described processor can carry and/ Or free time operand is the biggest, the least to the area of sub-zone dividing each described.
Alternatively, described acquisition module includes:
Second determines submodule, is used for when touch operation based on the input of fingerprint recognition region being detected, Determine the start time point of described touch operation and terminate time point, and/or the start bit of described touch operation Put and final position;
Second obtains submodule, for the duration between described start time point and described termination time point During less than preset duration, and/or the position skew between described original position and described final position is less than pre- If during the skew of position, obtaining each sub regions that described touch operation is corresponding in described fingerprint recognition region.
Alternatively, described second acquisition submodule includes:
Determine unit, for determining that described touch operation is in each sub regions in described fingerprint recognition region Corresponding touch area;
Acquiring unit, accounts for subregion area reach the subregion of preset ratio for obtaining touch area, and Using the subregion of acquisition as described touch operation subregion of correspondence in described fingerprint recognition region.
Additionally, for achieving the above object, the present invention also proposes a kind of fingerprint identification method, and described fingerprint is known Other method comprises the following steps:
When touch operation based on the input of fingerprint recognition region being detected, obtain described touch operation in institute State each sub regions corresponding in fingerprint recognition region;
Position letter based on the positional information of subregion each described with the center subregion in fingerprint recognition region Breath, calculates the relative distance of each described subregion and the center subregion in described fingerprint recognition region;
According to the described relative distance calculated, calculate described touch operation in described fingerprint recognition region Touch-control area;
When the described touch-control area calculated reaches preset area, gather the fingerprint that described touch operation is corresponding Information is to carry out fingerprint recognition.
Alternatively, described according to the described relative distance calculated, calculate described touch operation at described fingerprint Identify that the step of the touch-control area in region includes:
Determine the area of each described subregion;
Obtain the default sensitivity of described center subregion;
According to subregion each described and the relative distance of described center subregion, each described subregion The product of the default sensitivity of area and described center subregion, calculates each described subregion corresponding Response sensitivity;
The response sensitivity that subregion each described is corresponding is quadratured, obtains described touch operation described Touch-control area in fingerprint recognition region.
Alternatively, can being carried according to described processor by terminal handler of the area of each described subregion Operand and/or idle operand divide, wherein, operand that described processor can carry and/ Or free time operand is the biggest, the least to the area of sub-zone dividing each described.
Alternatively, described when touch operation based on the input of fingerprint recognition region being detected, obtain described The step of each sub regions that touch operation is corresponding in described fingerprint recognition region includes:
When touch operation based on the input of fingerprint recognition region being detected, determine rising of described touch operation Beginning time point and terminate time point, and/or the original position of described touch operation and final position;
When duration between described start time point and described termination time point is less than preset duration, and/or When position skew between described original position and described final position offsets less than predeterminated position, obtain institute State each sub regions that touch operation is corresponding in described fingerprint recognition region.
Alternatively, the Ge Gezi district that the described touch operation of described acquisition is corresponding in described fingerprint recognition region The step in territory includes:
Determine the touch surface that described touch operation is corresponding in each sub regions in described fingerprint recognition region Long-pending;
Acquisition touch area accounts for subregion area and reaches the subregion of preset ratio, and the subregion that will obtain As the subregion that described touch operation is corresponding in described fingerprint recognition region.
The fingerprint identification device of present invention proposition and method, by positional information and the center of each sub regions The relative distance of sub-window position, calculates described touch operation touch surface in described fingerprint recognition region Long-pending, and when the described touch-control area calculated reaches preset area, just gather fingerprint to carry out fingerprint recognition And be not only that the sensitivity according to fingerprint recognition region gathers fingerprint, it is therefore prevented that fingerprint recognition region When sensitivity is too high, even edge maloperation also can gather fingerprint and carry out fingerprint recognition, the present invention keeps away Exempt from the false to fingerprint of the fingerprint recognition region, thus improve the accuracy of fingerprint recognition.
Accompanying drawing explanation
Fig. 1 is the hardware architecture diagram realizing one of each embodiment of present invention mobile terminal alternatively;
Fig. 2 is the high-level schematic functional block diagram of fingerprint identification device first embodiment of the present invention;
Fig. 3 is the schematic diagram in fingerprint identification area territory in the present invention;
Fig. 4 is the refinement high-level schematic functional block diagram of the second computing module in Fig. 2;
Fig. 5 is the refinement high-level schematic functional block diagram of acquisition module in Fig. 2;
Fig. 6 is the second refinement high-level schematic functional block diagram obtaining word modules in Fig. 5;
Fig. 7 is the schematic flow sheet of fingerprint identification method first embodiment of the present invention;
Fig. 8 is the present invention described relative distance according to calculating, calculates described touch operation and knows at described fingerprint The schematic flow sheet of the touch-control area preferred embodiment in other region;
Fig. 9 is the present invention when touch operation based on the input of fingerprint recognition region being detected, obtains described touching Touch the schematic flow sheet of operation each sub regions preferred embodiment corresponding in described fingerprint recognition region;
Figure 10 is the Ge Gezi district that the present invention obtains that described touch operation is corresponding in described fingerprint recognition region The schematic flow sheet of territory preferred embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit Determine the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description In, use the suffix being used for representing such as " module ", " parts " or " unit " of element only for having It is beneficial to the explanation of the present invention, itself does not has specific meaning.Therefore, " module " and " parts " can Mixedly to use.
Mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention can include (individual digital helps for such as mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA Reason), PAD (panel computer), PMP (portable media player), the mobile end of guider etc. The fixed terminal of end and such as numeral TV, desk computer etc..Hereinafter it is assumed that terminal is mobile whole End.However, it will be understood by those skilled in the art that, in addition to being used in particular for the element of mobile purpose, Structure according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is the hardware architecture diagram realizing one of each embodiment of present invention mobile terminal alternatively.
Mobile terminal 100 can include wireless communication unit 110, A/V (audio/video) input block 120, User input unit 130, sensing unit 140, output unit 150, memorizer 160, interface unit 170, Controller 180 and power subsystem 190 etc..Fig. 1 shows the mobile terminal with various assembly, but should It is understood by, it is not required that implement all assemblies illustrated.Can alternatively implement more or less of group Part.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows mobile terminal 100 with wireless Radio communication between communicator or network.
A/V input block 120 is used for receiving audio or video signal.
It is mobile to control that user input unit 130 can generate key input data according to the order of user's input The various operations of terminal.User input unit 130 allows user to input various types of information, and permissible Including keyboard, metal dome, touch pad (such as, detection due to touched and cause resistance, pressure, electricity The sensitive component of change held etc.), roller, rocking bar etc..Especially, when touch pad as a layer When being superimposed upon on display unit 151, touch screen can be formed.
Sensing unit 140 detects the current state of mobile terminal 100, (such as, mobile terminal 100 open or Closed mode), the position of mobile terminal 100, user is for the contact (that is, touch input) of mobile terminal 100 Presence or absence, the orientation of mobile terminal 100, the acceleration of mobile terminal 100 or speed is moved and direction etc., And generate the order or signal being used for controlling the operation of mobile terminal 100.Such as, when mobile terminal 100 When being embodied as sliding-type mobile phone, it is to engage on or off that sensing unit 140 can sense this sliding-type number Close.It addition, sensing unit 140 includes fingerprint Identification sensor 141.
Interface unit 170 is used as at least one external device (ED) and is connected connecing of can passing through with mobile terminal 100 Mouthful.Such as, external device (ED) can include wired or wireless head-band earphone port, external power source (or battery Charger) port, wired or wireless FPDP, memory card port, for connect there is identification module The port of device, audio frequency input/output (I/O) port, video i/o port, ear port etc..Identify mould Block can be that storage is for verifying that user uses the various information of mobile terminal 100 and can include user Identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc..It addition, The device (hereinafter referred to as " identification device ") with identification module can be to take the form of smart card, therefore, Identify that device can be connected with mobile terminal 100 via port or other attachment means.Interface unit 170 can For receiving from the input (such as, data message, electric power etc.) of external device (ED) and will receive Input the one or more elements being transferred in mobile terminal 100 or may be used at mobile terminal with outer Data are transmitted between part device.
It addition, when mobile terminal 100 is connected with external base, interface unit 170 can serve as allowing to lead to Cross it provide the path of mobile terminal 100 by electric power from base or can serve as allowing to input from base Various command signals be transferred to the path of mobile terminal by it.Various command signals from base input Or electric power may serve as identifying whether mobile terminal is accurately fitted within the signal on base.Output is single Unit 150 be configured to vision, audio frequency and/or tactile manner provide output signal (such as, audio signal, Video signal, alarm signal, vibration signal etc.).Output unit 150 can include display unit 151.
Display unit 151 may be displayed on the information processed in mobile terminal 100.Such as, mobile terminal is worked as 100 when being in telephone calling model, display unit 151 can show and call or other communicate (such as, civilian This information receiving and transmitting, multimedia file download etc.) relevant user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling pattern or image capture mode, display unit 151 Can show capture image and/or the image of reception, illustrate video or image and the UI of correlation function or GUI etc..
Meanwhile, when display unit 151 and touch pad the most superposed on one another to form touch screen time, aobvious Show that unit 151 can serve as input equipment and output device.Display unit 151 can include liquid crystal display (LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexibility show Show at least one in device, three-dimensional (3D) display etc..Some in these display may be constructed such that Transparence is to allow user to watch from outside, and this is properly termed as transparent display, typical transparent display Can for example, TOLED (transparent organic light emitting diode) display etc..According to the specific enforcement wanted Mode, mobile terminal 100 can include two or more display units (or other display device), such as, Mobile terminal can include outernal display unit (not shown) and inner display unit (not shown).Touch screen can For detecting touch input pressure and touch input position and touch input area.
Memorizer 160 can store the process performed by controller 180 and control the software program etc. of operation Deng, or can temporarily store oneself through output maybe will export data (such as, telephone directory, message, Still image, video etc.).And, memorizer 160 can store about when touch is applied to touch screen The vibration of the various modes of output and the data of audio signal.
Memorizer 160 can include the storage medium of at least one type, described storage medium include flash memory, Hard disk, multimedia card, card-type memorizer (such as, SD or DX memorizer etc.), random access storage device (RAM), static random-access memory (SRAM), read only memory (ROM), electrically erasable Read only memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, light Dish etc..And, mobile terminal 100 can be connected the storage function performing memorizer 160 with by network Network storage device cooperation.
Controller 180 generally controls the overall operation of mobile terminal.Such as, controller 180 performs and voice Control that call, data communication, video calling etc. are relevant and process.It addition, controller 180 can wrap Including the multi-media module 181 for reproducing (or playback) multi-medium data, multi-media module 181 can construct In controller 180, or it is so structured that separate with controller 180.Controller 180 can perform pattern to be known Other places are managed, so that the handwriting input performed on the touchscreen or picture drafting input are identified as character or figure Picture.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides behaviour Make the suitable electric power needed for each element and assembly.
Various embodiment described herein can be to use such as computer software, hardware or its any group The computer-readable medium closed is implemented.Implementing for hardware, embodiment described herein can pass through Use application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, control Device, microcontroller, microprocessor, it is designed to perform in the electronic unit of function described herein extremely Few one is implemented, and in some cases, such embodiment can be implemented in controller 180.Right Implementing in software, the embodiment of such as process or function can perform at least one function or behaviour with permission The single software module made is implemented.Software code can be by writing with any suitable programming language Software application (or program) is implemented, and software code can be stored in memorizer 160 and by controlling Device 180 performs.
So far, oneself is through describing mobile terminal according to its function.Below, for the sake of brevity, will describe Various types of mobile terminals of such as folded form, board-type, oscillating-type, slide type mobile terminal etc. In slide type mobile terminal as example.Therefore, the present invention can be applied to any kind of mobile whole End, and it is not limited to slide type mobile terminal.
Based on above-mentioned mobile terminal hardware configuration, each embodiment of fingerprint identification device of the present invention is proposed.
With reference to the high-level schematic functional block diagram that Fig. 2, Fig. 2 are fingerprint identification device first embodiment of the present invention.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Fig. 2 is only The exemplary plot of one preferred embodiment, those skilled in the art is around the fingerprint identification device shown in Fig. 2 Functional module, can carry out easily new functional module supplement;The title of each functional module is self-defined Title, is only used for assisting each program function block understanding this fingerprint identification device, is not used in and limits this Bright technical scheme, the core of technical solution of the present invention is, the functional module of each self-defined title to reach The function become.
The present embodiment proposes a kind of fingerprint identification device, and described fingerprint identification device includes:
Acquisition module 10, for when touch operation based on the input of fingerprint recognition region being detected, obtaining Each sub regions that described touch operation is corresponding in described fingerprint recognition region;
In the present embodiment, described fingerprint identification device includes setting up module, and described module of setting up is for right Two-dimensional coordinate system is set up in described fingerprint recognition region, and described fingerprint recognition region is built by described module of setting up Vertical two-dimensional coordinate system, the preferably central point with described stricture of vagina identification region set up two-dimensional coordinate system for initial point.? On the basis of two-dimensional coordinate system is set up in described fingerprint recognition region, if detecting based on fingerprint recognition region During the touch operation inputted, the most described acquisition module 10 can directly obtain described touch operation at described fingerprint Identify each sub regions corresponding in region, and, it may be determined that the positional information of each sub regions, wherein, Each sub regions is the equal of described touch operation each contact in described fingerprint recognition region.This reality Execute the described touch operation in example can include clicking, long by touch operations such as, slip, double click operation, and Each described subregion in the present embodiment is unit area subregion.
First computing module 20, is used for when touch operation based on the input of fingerprint recognition region being detected, Obtain each sub regions that described touch operation is corresponding in described fingerprint recognition region;
In the present embodiment, described touch operation is obtained in described fingerprint identification area at described acquisition module 10 Each sub regions corresponding in territory, and after determining the positional information of each sub regions, then obtain described The positional information of the center subregion in fingerprint recognition region, the center subregion of described fingerprint recognition is above In central point, and can learn from the above, two-dimensional coordinate system be set up in described fingerprint recognition region, is Two-dimensional coordinate system is set up for initial point with the central point in described stricture of vagina identification region, therefore, described fingerprint recognition The positional information of the center subregion in region is the equal of initial point, and coordinate is (0,0), and is determining each After the positional information of the center subregion in the positional information of described subregion and fingerprint recognition region, described First computing module 20 can calculate the center subregion of each described subregion and described fingerprint recognition region Relative distance.For being best understood from the present embodiment, with a sub regions, namely a contact is carried out Citing, with reference to Fig. 3, described fingerprint recognition region (is that the most modal three kinds of fingerprints are known shown in Fig. 3 Other region shape) center position be A, namely the position of center subregion is A, described fingerprint Identifying that region horizontal length is designated as H, vertical length is designated as V, and the contact of the most described touch operation is B, The coordinate that one sub regions is B, B corresponding to the most described touch operation is designated as (X, Y), then institute The relative distance of the positional information and the position of described center subregion of stating subregion B is counted according to formula Calculate: D = ( X H / 2 ) 2 + ( Y V / 2 ) 2
According to above-mentioned formula, described first computing module 20 can calculate the position of each described subregion Information and described center subregion and the relative distance of position.
Second computing module 30, for according to the described relative distance calculated, calculating described touch operation and exist Touch-control area in described fingerprint recognition region;
In the present embodiment, for improving the accuracy of touch-control areal calculation, with reference to Fig. 4, described second calculates Module 30 includes:
First determines submodule 31, for determining the area of each described subregion;
In the present embodiment, described first determines that submodule 31 first determines the area of each described subregion, Above it has been noted that each sub regions is unit are subregion, and the numerical value of unit are subregion Being determined by the characteristic of terminal handler itself, wherein, the granularity of numerical value divides the least, it is possible to more accurate Calculate effective touch-control area, but granularity divides the least, and the operand of chip is the biggest, therefore, this reality Execute in example, in order to improve the intelligent of sub-zone dividing, preferably the area of each described subregion by end Operand and/or idle operand that end processor can carry according to described processor divide, wherein, Operand and/or idle operand that described processor can carry are the biggest, to sub-zone dividing each described Area is the least.That is the operand that terminal handler currently can carry and idle operand are the biggest, then Can be by the least for the numerical division of unit are subregion, therefore, according to the process side of described terminal handler Formula, i.e. can determine that the area of each described subregion, and the concrete numerical value of the area of each sub regions according to Concrete condition divides, and in the present embodiment, each sub-zone dividing such as is at the big subregion, therefore, respectively The area symbol beta of individual described subregion represents.
First obtains submodule 32, for obtaining the default sensitivity of described center subregion;
In this embodiment, after described first determines the area that submodule 31 determines each described subregion, Described first obtains submodule 32 obtains the default sensitivity of described center subregion, described center subregion Default sensitivity be actually the response sensitivity in described fingerprint recognition region, be an inherent character, Owing to representing center subregion with letter A above, therefore, the default sensitivity of described center subregion is used Symbol ε A represents.
Calculating sub module 33, for the relative distance according to subregion each described and described center subregion, The area of each described subregion and the product of the default sensitivity of described center subregion, calculate each The response sensitivity that described subregion is corresponding;
In the present embodiment, determine that submodule 31 determines the area of each described subregion described first, And after described first obtains the default sensitivity that submodule 32 gets described center subregion, described Calculating sub module 33 is according to the relative distance of subregion each described and described center subregion, described in each The area of subregion and the default sensitivity of described center subregion, can calculate each described sub-district The response sensitivity that territory is corresponding, the most described calculating sub module 33 by each described subregion with described in The relative distance in center region, the area of each described subregion and the default spirit of described center subregion Sensitivity is multiplied, the response sensitivity corresponding to obtain each described subregion, in like manner, with subregion B As a example by, computing formula is as follows:
ϵ B = ϵ A * β * ( X H / 2 ) 2 + ( Y V / 2 ) 2
According to above-mentioned computing formula, it is corresponding that described calculating sub module 33 i.e. can get each described subregion Response sensitivity.
Integration submodule 34, for quadraturing the response sensitivity that subregion each described is corresponding, obtains Described touch operation touch-control area in described fingerprint recognition region.
In the present embodiment, after obtaining the response sensitivity that each described subregion is corresponding, described long-pending The response sensitivity that subregion each described is corresponding is quadratured by molecular modules 34, to obtain described touch behaviour Making the touch-control area in described fingerprint recognition region, computing formula is:
S = ∫ ∫ ( x 1 , y 1 ) ( x 2 , y 2 ) ϵ B = ϵ A * β * ∫ ( x 1 , y 1 ) ( x 2 , y 2 ) ( X H / 2 ) 2 + ( Y V / 2 ) 2
Wherein, described (x1,y1) represent the point that the coordinate figure in each sub regions is minimum, described (x2,y2) represent The point that coordinate figure in each sub regions is maximum, according to above-mentioned computing formula, i.e. can get described touch and grasps Make the touch-control area in described fingerprint recognition region.
Acquisition module 40, during for reaching preset area at the described touch-control area calculated, gathers described touching Touch finger print information corresponding to operation to carry out fingerprint recognition.
In the present embodiment, after being calculated described touch-control area, the described touch-control area that will calculate Comparing with preset area, wherein, described preset area can be expressed as the effective area of fingerprint recognition, The i.e. touch-control area of touch control operation reaches described preset area, just thinks that described touch operation is effective touching Touching operation, now, described acquisition module 40 just can gather finger print information corresponding to described touch operation to enter Row fingerprint recognition, if the described touch-control area calculated is less than described preset area, does not the most gather described touching Touch finger print information corresponding to operation to carry out fingerprint recognition, it is therefore prevented that the false to fingerprint of the fingerprint recognition region.
The fingerprint identification device that the present invention proposes, by the positional information of each sub regions and center subregion The relative distance of position, calculates described touch operation touch-control area in described fingerprint recognition region, and When the described touch-control area calculated reaches preset area, just collection fingerprint with carry out fingerprint recognition and not only It is only that the sensitivity according to fingerprint recognition region gathers fingerprint, it is therefore prevented that the sensitivity in fingerprint recognition region Time too high, even edge maloperation also can gather fingerprint and carry out fingerprint recognition, present invention, avoiding finger The false to fingerprint of the stricture of vagina identification region, thus improve the accuracy of fingerprint recognition.
Further, in order to improve the motility of fingerprint recognition, propose the present invention based on first embodiment and refer to Second embodiment of stricture of vagina identification device, in the present embodiment, in the present embodiment, with reference to Fig. 5, described in obtain Delivery block 10 includes:
Second determines submodule 11, is used for when touch operation based on the input of fingerprint recognition region being detected, Determine the start time point of described touch operation and terminate time point, and/or the start bit of described touch operation Put and final position;
Second obtain submodule 12, between described start time point and described termination time point time When length is less than preset duration, and/or the position skew between described original position and described final position is less than During predeterminated position skew, obtain the Ge Gezi district that described touch operation is corresponding in described fingerprint recognition region Territory.
In the present embodiment, in order to improve the accuracy that subregion obtains, with reference to Fig. 6, described second obtains Submodule 12 includes:
Determine unit 121, for determining the described touch operation each sub regions in described fingerprint recognition region The touch area of middle correspondence;
Acquiring unit 122, accounts for subregion area reach the subregion of preset ratio for obtaining touch area, And using the subregion of acquisition as described touch operation subregion of correspondence in described fingerprint recognition region.
In the present embodiment, described preset ratio can be configured as the case may be, described in the present embodiment Preset ratio is preferably greater than 50%.
In the present embodiment, detect based on fingerprint recognition region input touch operation time, described really Cell 121 first determines the start time point of described touch operation and terminates time point, and/or described touch The original position of operation and final position, and between described start time point and described termination time point When duration is less than preset duration, and/or the position skew between described original position and described final position is little When predeterminated position offsets, described acquiring unit 122 just obtains described touch operation in described fingerprint recognition Each sub regions corresponding in region, such as, when described touch operation is for clicking touch operation, described Determine that unit 121 is clicked the start time point of touch operation and terminated time point described in first determining, and/or institute State and click touch operation original position in described fingerprint recognition region and final position, and calculate described Duration between start time point and described termination time point, and/or described original position and described stop bit Position skew between putting, only when described duration is less than preset duration such as 500ms and/or described initial When position skew between position and described final position is less than 1.5mm, described acquiring unit 122 just obtains Click each sub regions that touch operation is corresponding in described fingerprint recognition region described in taking, be the equal of Get down event and the up event clicking touch operation in preset duration, and in down event and Position skew between up event offsets less than predeterminated position, and described acquiring unit 122 just obtains described list Hit each sub regions that touch operation is corresponding in described fingerprint recognition region, it will be understood that described in click The down event of touch operation and up representations of events click touch operation finger point in fingerprint recognition region The operation that the operation hit and finger leave.
Further, when described touch operation is for double-clicking touch operation, then, now need also exist in advance If get down and the up event of twice touch operation in duration, and the down of twice touch operation The position skew of event and up event will offset less than predeterminated position, further, in order to improve touch The accuracy of operation, for the first time position skew up event and the time of second time touch operation down event Interval also must be positioned in preset time range, meanwhile, and the up event of touch operation for the first time and second time The down event location skew of touch operation is positioned at predeterminated position deviation range, say, that described Touch operation is for double-clicking touch operation, it is necessary to meet aforementioned four condition, described acquiring unit 122 ability Obtain each sub regions that described double-click touch operation is corresponding in described fingerprint recognition region.
It is understood that what the two ways enumerated listed above was merely exemplary, art technology Personnel utilize the technological thought of the present invention, and other terminal proposed according to its real needs is to described terminal The mode sending positional information is all within the scope of the present invention, does not carry out the most exhaustive at this.
In the present embodiment, when touch operation based on the input of fingerprint recognition region being detected, first determine Determine the start time point of described touch operation and terminate time point, and/or the start bit of described touch operation Put and final position, and the duration between described start time point and described termination time point is less than presetting During duration, and/or the position skew between described original position and described final position is inclined less than predeterminated position During shifting, just obtain each sub regions that described touch operation is corresponding in described fingerprint recognition region, and hold The operation of the touch-control area of row subsequent calculations touch operation, thus improve accuracy and the effect of fingerprint recognition Rate.
Further, in order to improve the motility of fingerprint recognition, the present invention also can calculate touch operation Corresponding touch-control area, and while the touch-control area of calculating and preset area are compared, just by institute Start time point and the duration terminated between time point of stating touch operation are compared with preset duration, and/ Or the position skew between original position and the final position of described touch operation offsets with predeterminated position and carries out Comparison, and when three comparison results all meet condition, the touch-control area i.e. calculated reaches described default face Long-pending, the start time point of described touch operation and the duration that terminates between time point less than preset duration, and/ Or position skew between original position and the final position of described touch operation is inclined less than described predeterminated position Moving, just collection fingerprint is to carry out the identification of fingerprint, thus improves the motility of fingerprint recognition.
In technical scheme, it is therefore prevented that when the sensitivity in fingerprint recognition region is higher, user is not intended to Between touch-control to the edge in fingerprint recognition region with regard to false touch fingerprint function, in the present invention, owing to knowing from fingerprint The center in other region is the most remote, and fingerprint sensitivity is the lowest, and user's false touch fingerprint device edge is difficult to reach effective Touch-control area, it is to avoid the fingerprint recognition region false to fingerprint, thus improve the accurate of fingerprint recognition Property.
The present invention further provides a kind of fingerprint identification method.
With reference to the schematic flow sheet that Fig. 7, Fig. 7 are fingerprint identification method first embodiment of the present invention.
The present embodiment proposes a kind of fingerprint identification method, and described fingerprint identification method comprises the following steps:
Step S10, when touch operation based on the input of fingerprint recognition region being detected, obtains described touch Each sub regions that operation is corresponding in described fingerprint recognition region;
In the present embodiment, before described step S10, set up two dimension including to described fingerprint recognition region The step of coordinate system, and described fingerprint recognition region is set up two-dimensional coordinate system, preferably with described stricture of vagina identification The central point in region is that initial point sets up two-dimensional coordinate system.Two-dimensional coordinate is being set up in described fingerprint recognition region On the basis of system, if touch operation based on the input of fingerprint recognition region detected, then can directly obtain Each sub regions that described touch operation is corresponding in described fingerprint recognition region, and, it may be determined that each The positional information of subregion, wherein, each sub regions is the equal of that described touch operation is known at described fingerprint Each contact in other region.Described touch operation in the present embodiment can include clicking, long by, slide, The touch operations such as double click operation, and each the described subregion in the present embodiment is unit area subregion.
Step S20, center subregion based on the positional information of subregion each described Yu fingerprint recognition region Positional information, calculate each described subregion relative with the center subregion in described fingerprint recognition region Distance;
In the present embodiment, described touch operation corresponding each in described fingerprint recognition region is being obtained Subregion, and after determining the positional information of each sub regions, then obtain described fingerprint recognition region The positional information of center subregion, the center subregion of described fingerprint recognition is central point above, and Can learn from the above, two-dimensional coordinate system is set up in described fingerprint recognition region, be with described stricture of vagina cog region The central point in territory is that initial point sets up two-dimensional coordinate system, therefore, and the middle center district in described fingerprint recognition region The positional information in territory is the equal of initial point, and coordinate is (0,0), and is determining the position of each described subregion After the positional information of the center subregion in confidence breath and fingerprint recognition region, each described son can be calculated The relative distance of the center subregion in region and described fingerprint recognition region.For being best understood from the present embodiment, With a sub regions, namely illustrate in a contact, with reference to Fig. 3, described fingerprint recognition region (figure The most modal three kinds of fingerprint recognition region shapes shown in 3) center position be A, namely The position of center subregion is A, and described fingerprint recognition region horizontal length is designated as H, and vertical length is designated as V, The contact of the most described touch operation is B, and a sub regions corresponding to the most described touch operation is B, The coordinate of B is designated as (X, Y), the positional information of the most described subregion B and the position of described center subregion The relative distance put calculates according to formula:
D = ( X H / 2 ) 2 + ( Y V / 2 ) 2
According to above-mentioned formula, the positional information of each described subregion and described middle center district can be calculated Territory and the relative distance of position.
Step S30, according to the described relative distance calculated, calculates described touch operation in described fingerprint recognition Touch-control area in region;
In the present embodiment, for improving the accuracy of touch-control areal calculation, with reference to Fig. 8, described step S30 Including:
Step S31, determines the area of each described subregion;
In the present embodiment, first determine the area of each described subregion, above it has been noted that each Subregion is unit are subregion, and the numerical value of unit are subregion is by the spy of terminal handler itself Property determine, wherein, the granularity of numerical value divides the least, it is possible to calculate effective touch-control area more accurately, But granularity divides the least, and the operand of chip is the biggest, therefore, in the present embodiment, in order to improve sub-district Territory divide intelligent, preferably the area of each described subregion by terminal handler according to described process Operand and/or idle operand that device can carry divide, wherein, and the fortune that described processor can carry Calculation amount and/or idle operand are the biggest, the least to the area of sub-zone dividing each described.That is eventually Operand and idle operand that end processor currently can carry are the biggest, then can be by unit are subregion Numerical division is the least, therefore, according to the processing mode of described terminal handler, i.e. can determine that described in each The area of subregion, and the concrete numerical value of the area of each sub regions divides as the case may be, in this reality Executing in example, each sub-zone dividing such as is at the big subregion, and therefore, the area of each described subregion is used Symbol beta represents.
Step S32, obtains the default sensitivity of described center subregion;
In this embodiment, it is determined that after the area of each described subregion, described center subregion is obtained Default sensitivity, the default sensitivity of described center subregion is actually described fingerprint recognition region Response sensitivity, is an inherent character, owing to representing center subregion with letter A above, therefore, The default sensitivity symbol ε A of described center subregion represents.
Step S33, according to the relative distance of subregion each described and described center subregion, described in each The area of subregion and the product of the default sensitivity of described center subregion, calculate each described sub-district The response sensitivity that territory is corresponding;
In the present embodiment, determining the area of each described subregion, and getting described center After the default sensitivity of subregion, according to subregion each described relative with described center subregion away from From, the area of each described subregion and the default sensitivity of described center subregion, can calculate The response sensitivity that each described subregion is corresponding, specifically by each described subregion and described middle center The relative distance in region, the area of each described subregion and the default sensitivity of described center subregion It is multiplied, the response sensitivity corresponding to obtain each described subregion, in like manner, with subregion B be Example, computing formula is as follows:
ϵ B = ϵ A * β * ( X H / 2 ) 2 + ( Y V / 2 ) 2
According to above-mentioned computing formula, i.e. can get the response sensitivity that each described subregion is corresponding.
Step S34, quadratures to the response sensitivity that subregion each described is corresponding, obtains described touch and grasps Make the touch-control area in described fingerprint recognition region.
In the present embodiment, after obtaining the response sensitivity that each described subregion is corresponding, to each The response sensitivity that described subregion is corresponding is quadratured, to obtain described touch operation in described fingerprint recognition Touch-control area in region, computing formula is:
S = ∫ ∫ ( x 1 , y 1 ) ( x 2 , y 2 ) ϵ B = ϵ A * β * ∫ ( x 1 , y 1 ) ( x 2 , y 2 ) ( X H / 2 ) 2 + ( Y V / 2 ) 2
Wherein, described (x1,y1) represent the point that the coordinate figure in each sub regions is minimum, described (x2,y2) represent The point that coordinate figure in each sub regions is maximum, according to above-mentioned computing formula, i.e. can get described touch and grasps Make the touch-control area in described fingerprint recognition region.
Step S40, when the described touch-control area calculated reaches preset area, gathers described touch operation pair The finger print information answered is to carry out fingerprint recognition.
In the present embodiment, after being calculated described touch-control area, the described touch-control area that will calculate Comparing with preset area, wherein, described preset area can be expressed as the effective area of fingerprint recognition, The i.e. touch-control area of touch control operation reaches described preset area, just thinks that described touch operation is effective touching Touch operation, now, just can gather finger print information corresponding to described touch operation to carry out fingerprint recognition, if The described touch-control area calculated, less than described preset area, does not the most gather the finger that described touch operation is corresponding Stricture of vagina information is to carry out fingerprint recognition, it is therefore prevented that the false to fingerprint of the fingerprint recognition region.
The fingerprint identification method that the present invention proposes, by the positional information of each sub regions and center subregion The relative distance of position, calculates described touch operation touch-control area in described fingerprint recognition region, and When the described touch-control area calculated reaches preset area, just collection fingerprint with carry out fingerprint recognition and not only It is only that the sensitivity according to fingerprint recognition region gathers fingerprint, it is therefore prevented that the sensitivity in fingerprint recognition region Time too high, even edge maloperation also can gather fingerprint and carry out fingerprint recognition, present invention, avoiding finger The false to fingerprint of the stricture of vagina identification region, thus improve the accuracy of fingerprint recognition.
Further, in order to improve the motility of fingerprint recognition, propose the present invention based on first embodiment and refer to Second embodiment of stricture of vagina recognition methods, in the present embodiment, with reference to Fig. 9, described step S10 includes:
Step S11, when touch operation based on the input of fingerprint recognition region being detected, determines described touch The start time point of operation and terminate time point, and/or the original position of described touch operation and final position;
Step S12, the duration between described start time point and described termination time point is less than preset duration Time, and/or when the position skew between described original position and described final position offsets less than predeterminated position, Obtain each sub regions that described touch operation is corresponding in described fingerprint recognition region.
In the present embodiment, in order to improve the accuracy that subregion obtains, with reference to Figure 10, described step S12 Including:
Step S121, determines that described touch operation is corresponding in each sub regions in described fingerprint recognition region Touch area;
Step S122, acquisition touch area accounts for subregion area and reaches the subregion of preset ratio, and will obtain The subregion taken is as described touch operation subregion of correspondence in described fingerprint recognition region.
In the present embodiment, described preset ratio can be configured as the case may be, described in the present embodiment Preset ratio is preferably greater than 50%.
In the present embodiment, when touch operation based on the input of fingerprint recognition region being detected, first determine The start time point of described touch operation and terminate time point, and/or the original position of described touch operation and Final position, and the duration between described start time point and described termination time point is less than preset duration Time, and/or when the position skew between described original position and described final position offsets less than predeterminated position, Just obtain each sub regions that described touch operation is corresponding in described fingerprint recognition region, such as, in institute When stating touch operation for clicking touch operation, determine described in click start time point and the termination of touch operation Time point, and/or described in click touch operation original position in described fingerprint recognition region and stop bit Put, and calculate the duration between described start time point and described termination time point, and/or described start bit Put the position skew between described final position, only when described duration is less than preset duration such as 500ms, And/or the position between described original position and described final position offsets when being less than 1.5mm, just obtain institute State and click each sub regions that touch operation is corresponding in described fingerprint recognition region, be the equal of to preset Down event and the up event clicking touch operation is got in duration, and in down event and up thing Position skew between part offsets less than predeterminated position, just clicks touch operation at described fingerprint described in acquisition Identify each sub regions corresponding in region, it will be understood that described in click touch operation down event and Up representations of events clicks the touch operation operation that finger is clicked in fingerprint recognition region and the behaviour that finger leaves Make.
Further, when described touch operation is for double-clicking touch operation, then, now need also exist in advance If get down and the up event of twice touch operation in duration, and the down of twice touch operation The position skew of event and up event will offset less than predeterminated position, further, in order to improve touch The accuracy of operation, for the first time position skew up event and the time of second time touch operation down event Interval also must be positioned in preset time range, meanwhile, and the up event of touch operation for the first time and second time The down event location skew of touch operation is positioned at predeterminated position deviation range, say, that described Touch operation is for double-clicking touch operation, it is necessary to meet aforementioned four condition, could obtain described double-click and touch Each sub regions that operation is corresponding in described fingerprint recognition region.
It is understood that what the two ways enumerated listed above was merely exemplary, art technology Personnel utilize the technological thought of the present invention, and other terminal proposed according to its real needs is to described terminal The mode sending positional information is all within the scope of the present invention, does not carry out the most exhaustive at this.
In the present embodiment, when touch operation based on the input of fingerprint recognition region being detected, first determine Determine the start time point of described touch operation and terminate time point, and/or the start bit of described touch operation Put and final position, and the duration between described start time point and described termination time point is less than presetting During duration, and/or the position skew between described original position and described final position is inclined less than predeterminated position During shifting, just obtain each sub regions that described touch operation is corresponding in described fingerprint recognition region, and hold The operation of the touch-control area of row subsequent calculations touch operation, thus improve accuracy and the effect of fingerprint recognition Rate.
Further, in order to improve the motility of fingerprint recognition, the present invention also can calculate touch operation Corresponding touch-control area, and while the touch-control area of calculating and preset area are compared, just by institute Start time point and the duration terminated between time point of stating touch operation are compared with preset duration, and/ Or the position skew between original position and the final position of described touch operation offsets with predeterminated position and carries out Comparison, and when three comparison results all meet condition, the touch-control area i.e. calculated reaches described default face Long-pending, the start time point of described touch operation and the duration that terminates between time point less than preset duration, and/ Or position skew between original position and the final position of described touch operation is inclined less than described predeterminated position Moving, just collection fingerprint is to carry out the identification of fingerprint, thus improves the motility of fingerprint recognition.
In technical scheme, it is therefore prevented that when the sensitivity in fingerprint recognition region is higher, user is not intended to Between touch-control to the edge in fingerprint recognition region with regard to false touch fingerprint function, in the present invention, owing to knowing from fingerprint The center in other region is the most remote, and fingerprint sensitivity is the lowest, and user's false touch fingerprint device edge is difficult to reach effective Touch-control area, it is to avoid the fingerprint recognition region false to fingerprint, thus improve the accurate of fingerprint recognition Property.
It should be noted that in this article, term " include ", " comprising " or its other variant any Be intended to comprising of nonexcludability so that include the process of a series of key element, method, article or Person's system not only includes those key elements, but also includes other key element being not expressly set out, or also Including the key element intrinsic for this process, method, article or system.In the feelings not having more restriction Under condition, statement " including ... " key element limited, it is not excluded that include this key element process, Method, article or system there is also other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive above-mentioned Embodiment method can add the mode of required general hardware platform by software and realize, naturally it is also possible to logical Cross hardware, but a lot of in the case of the former is more preferably embodiment.Based on such understanding, the present invention's The part that prior art is contributed by technical scheme the most in other words can be with the form body of software product Revealing to come, this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, light Dish) in, including some instructions with so that a station terminal equipment (can be mobile phone, computer, service Device, air-conditioner, or the network equipment etc.) perform the method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or Connect and be used in other relevant technical field, be the most in like manner included in the scope of patent protection of the present invention.

Claims (10)

1. a fingerprint identification device, it is characterised in that described fingerprint identification device includes:
Acquisition module, for when touch operation based on the input of fingerprint recognition region being detected, obtaining institute State each sub regions that touch operation is corresponding in described fingerprint recognition region;
First computing module, for when touch operation based on the input of fingerprint recognition region being detected, obtaining Take each sub regions that described touch operation is corresponding in described fingerprint recognition region;
Second computing module, for according to the described relative distance calculated, calculating described touch operation in institute State the touch-control area in fingerprint recognition region;
Acquisition module, during for reaching preset area at the described touch-control area calculated, gathers described touch The finger print information of operation correspondence is to carry out fingerprint recognition.
2. fingerprint identification device as claimed in claim 1, it is characterised in that described second computing module Including:
First determines submodule, for determining the area of each described subregion;
First obtains submodule, for obtaining the default sensitivity of described center subregion;
Calculating sub module, for the relative distance according to subregion each described and described center subregion, The area of each described subregion and the product of the default sensitivity of described center subregion, calculate each The response sensitivity that described subregion is corresponding;
Integration submodule, for quadraturing the response sensitivity that subregion each described is corresponding, obtains institute State touch operation touch-control area in described fingerprint recognition region.
3. fingerprint identification device as claimed in claim 2, it is characterised in that each described subregion The operand that can be carried according to described processor by terminal handler and/or the idle operand of area are carried out Dividing, wherein, operand and/or idle operand that described processor can carry are the biggest, to described in each The area of sub-zone dividing is the least.
4. the fingerprint identification device as described in any one of claim 1-3, it is characterised in that described acquisition Module includes:
Second determines submodule, is used for when touch operation based on the input of fingerprint recognition region being detected, Determine the start time point of described touch operation and terminate time point, and/or the start bit of described touch operation Put and final position;
Second obtains submodule, for the duration between described start time point and described termination time point During less than preset duration, and/or the position skew between described original position and described final position is less than pre- If during the skew of position, obtaining each sub regions that described touch operation is corresponding in described fingerprint recognition region.
5. fingerprint identification device as claimed in claim 4, it is characterised in that described second obtains submodule Block includes:
Determine unit, for determining that described touch operation is in each sub regions in described fingerprint recognition region Corresponding touch area;
Acquiring unit, accounts for subregion area reach the subregion of preset ratio for obtaining touch area, and Using the subregion of acquisition as described touch operation subregion of correspondence in described fingerprint recognition region.
6. a fingerprint identification method, it is characterised in that described fingerprint identification method comprises the following steps:
When touch operation based on the input of fingerprint recognition region being detected, obtain described touch operation in institute State each sub regions corresponding in fingerprint recognition region;
Position letter based on the positional information of subregion each described with the center subregion in fingerprint recognition region Breath, calculates the relative distance of each described subregion and the center subregion in described fingerprint recognition region;
According to the described relative distance calculated, calculate described touch operation in described fingerprint recognition region Touch-control area;
When the described touch-control area calculated reaches preset area, gather the fingerprint that described touch operation is corresponding Information is to carry out fingerprint recognition.
7. fingerprint identification method as claimed in claim 6, it is characterised in that described according to the institute calculated State relative distance, calculate the step bag of described touch operation touch-control area in described fingerprint recognition region Include:
Determine the area of each described subregion;
Obtain the default sensitivity of described center subregion;
According to subregion each described and the relative distance of described center subregion, each described subregion The product of the default sensitivity of area and described center subregion, calculates each described subregion corresponding Response sensitivity;
The response sensitivity that subregion each described is corresponding is quadratured, obtains described touch operation described Touch-control area in fingerprint recognition region.
8. fingerprint identification method as claimed in claim 7, it is characterised in that each described subregion The operand that can be carried according to described processor by terminal handler and/or the idle operand of area are carried out Dividing, wherein, operand and/or idle operand that described processor can carry are the biggest, to described in each The area of sub-zone dividing is the least.
9. the fingerprint identification method as described in any one of claim 6-8, it is characterised in that described in inspection When measuring touch operation based on the input of fingerprint recognition region, obtain described touch operation and know at described fingerprint The step of each sub regions corresponding in other region includes:
When touch operation based on the input of fingerprint recognition region being detected, determine rising of described touch operation Beginning time point and terminate time point, and/or the original position of described touch operation and final position;
When duration between described start time point and described termination time point is less than preset duration, and/ Or the position between described original position and described final position offsets when offseting less than predeterminated position, obtain Each sub regions that described touch operation is corresponding in described fingerprint recognition region.
10. fingerprint identification method as claimed in claim 9, it is characterised in that described acquisition is described touches The step touching operation each sub regions corresponding in described fingerprint recognition region includes:
Determine the touch surface that described touch operation is corresponding in each sub regions in described fingerprint recognition region Long-pending;
Acquisition touch area accounts for subregion area and reaches the subregion of preset ratio, and the subregion that will obtain As the subregion that described touch operation is corresponding in described fingerprint recognition region.
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