CN106446818A - Fingerprint recognition method and device and terminal equipment - Google Patents
Fingerprint recognition method and device and terminal equipment Download PDFInfo
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- CN106446818A CN106446818A CN201610832171.XA CN201610832171A CN106446818A CN 106446818 A CN106446818 A CN 106446818A CN 201610832171 A CN201610832171 A CN 201610832171A CN 106446818 A CN106446818 A CN 106446818A
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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
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
- G06Q20/401—Transaction verification
- G06Q20/4014—Identity check for transactions
- G06Q20/40145—Biometric identity checks
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Abstract
The invention discloses a fingerprint recognition method and device and terminal equipment. The method comprises the steps that a first capacitance value generated by a target object contacted with a fingerprint sensor is detected; whether the order of magnitude of the first capacitance value is consistent with that of a preset second capacitance value is judged, wherein the second capacitance value is the capacitance value generated by the registered fingerprints contacted with the fingerprint sensor; if the order of magnitude of the first capacitance value is consistent with that of the second capacitance value, whether the target object is matched with the registered fingerprints is detected; and if the matching degree of the target object and the registered fingerprints meets the preset threshold, corresponding operation is performed according to the preset control instruction. With application of the fingerprint recognition method and device and the terminal equipment, the probability of false contact of the fingerprint sensor can be greatly reduced and the accuracy and the effectiveness of fingerprint recognition can be enhanced.
Description
Technical field
The present invention relates to fingerprint identification technology field, more particularly, to a kind of fingerprint identification method, device and terminal unit.
Background technology
At present, with the continuous popularization of fingerprint recognition, fingerprint recognition can be not only used for unblock and the wake-up of mobile terminal
Etc. function, it is also the important ring of mobile payment.Thus, increasingly pay attention to the accuracy of fingerprint recognition.
In correlation technique, using active unblock, that is, fingerprint sensor externally carries out transmission signal, at any time incessantly
Prepare to be unlocked process to all " fingerprint " entering induction region, as long as the contact of any skin of this user all can occur
Unblock processes the false touch that there is high probability.
Content of the invention
The purpose of the present invention is intended at least solve to a certain extent one of above-mentioned technical problem.
For this reason, the first of the present invention purpose is to propose a kind of fingerprint identification method, it is right that the method can substantially reduce
The probability of fingerprint sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
Second object of the present invention is to propose a kind of fingerprint identification device.
Third object of the present invention is to propose a kind of terminal unit.
For reaching above-mentioned purpose, a kind of fingerprint identification method that embodiment proposes according to a first aspect of the present invention, including following
Step：
Detect the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge whether the order of magnitude of described first capacitance is consistent with the order of magnitude of default second capacitance, wherein, institute
State the capacitance that the second capacitance is that the registered fingerprint being contacted with described fingerprint sensor is produced；
If the order of magnitude of described first capacitance and the order-of-magnitude agreement of described second capacitance, detect described target
Whether object is mated with described registered fingerprint；
If described target object and described registered fingerprint matching degree meet predetermined threshold value, according to default control instruction
Execution corresponding operating.
The fingerprint identification method of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
For reaching above-mentioned purpose, a kind of fingerprint identification device that embodiment proposes according to the second aspect of the invention, including：
First detection module, for detecting the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge module, for judge the order of magnitude of described first capacitance and default second capacitance the order of magnitude whether
Unanimously, wherein, described second capacitance is the capacitance that the registered fingerprint being contacted with described fingerprint sensor is produced；
First processing module, in the order of magnitude of described first capacitance and the order-of-magnitude agreement of described second capacitance
When, detect whether described target object is mated with described registered fingerprint；
Second processing module, for when described target object and described registered fingerprint matching degree meet predetermined threshold value, root
Execute corresponding operating according to default control instruction.
The fingerprint identification device of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
For reaching above-mentioned purpose, a kind of terminal unit that embodiment proposes according to the third aspect of the invention we, including：Housing,
Processor, memorizer, circuit board and power circuit, wherein, described circuit board is placed in the interior volume that described housing surrounds, institute
State processor and described memorizer is arranged on described circuit board；Described power circuit, for each circuit for terminal unit
Or device powers；Described memorizer is used for storing executable program code；Described processor passes through to read in described memorizer to be deposited
The executable program code of storage running program corresponding with described executable program code, for executing following steps：
Detect the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge whether the order of magnitude of described first capacitance is consistent with the order of magnitude of default second capacitance, wherein, institute
State the capacitance that the second capacitance is that the registered fingerprint being contacted with described fingerprint sensor is produced；
If the order of magnitude of described first capacitance and the order-of-magnitude agreement of described second capacitance, detect described target
Whether object is mated with described registered fingerprint；
If described target object and described registered fingerprint matching degree meet predetermined threshold value, according to default control instruction
Execution corresponding operating.
The terminal unit of the embodiment of the present invention, the first electricity that the target object that detection is contacted with fingerprint sensor first produces
Capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the second electricity
Capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced, then in the order of magnitude and second electricity of the first capacitance
During the order-of-magnitude agreement of capacitance, whether detection target object is mated with registered fingerprint, finally in target object and registered fingerprint
When degree of joining meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint sensing
The probability of device false touch, improves accuracy and the effectiveness of fingerprint recognition.
The aspect that the present invention adds and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein：
Fig. 1 is the flow chart of fingerprint identification method according to an embodiment of the invention；
Fig. 2 is the schematic diagram of capacitive fingerprint sensing device model according to an embodiment of the invention；
Fig. 3 is the flow chart of fingerprint identification method in accordance with another embodiment of the present invention；
Fig. 4 is the structural representation of fingerprint identification device according to an embodiment of the invention；
Fig. 5 is the structural representation of fingerprint identification device in accordance with another embodiment of the present invention；And
Fig. 6 is the structural representation of terminal unit according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings fingerprint identification method, device and the terminal unit of the embodiment of the present invention are described.
Fig. 1 is the flow chart of fingerprint identification method according to an embodiment of the invention.
As shown in figure 1, the fingerprint identification method of the embodiment of the present invention comprises the following steps：
Step 101, detects the first capacitance that the target object being contacted with fingerprint sensor is produced.
Step 102, judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, its
In, the second capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced.
Generally, terminal equipment configuration has active unlocked by fingerprint, payment etc. to operate, and that is, fingerprint sensor is right incessantly
Carry out outward transmission signal, be ready to carry out operation process to all " fingerprints " entering induction region, as long as but user appoint
The contact of what skin all can occur operation to process, and there is the false touch of high probability.
Thus, embodiments provide a kind of fingerprint identification method, before mating with registered fingerprint, according to fingerprint
After the capacitance situation of sensor judges that target object is finger print, further target object is mated with registered fingerprint,
The probability to fingerprint sensor false touch can be substantially reduced, improve accuracy and the effectiveness of fingerprint recognition.
Specifically, the fingerprint sensor of the embodiment of the present invention is capacitive fingerprint sensor, based on capacitance and capacitance electrode
Between the physical principle that is inversely proportional to of distance, can be electric by coupling to sensor surface electrod-array between for the Measuring Object surface
Hold, body surface space structure is imaged, for example, the rough space characteristics of ridge paddy of fingerprint are imaged.Furthermore it is possible to
Different by the capacitance size that formed between the ridge of fingerprint and paddy and quasiconductor capacitive granule, to distinguish different fingerprints.Specifically
Structure combines Fig. 2 and describes in detail.
Fig. 2 is the schematic diagram of capacitive fingerprint sensing device model according to an embodiment of the invention.As shown in Fig. 2 working as
Fingerprint tough to after the induction region of quasiconductor induction apparatuss, the different capacitance size that the ridge of different fingerprints and paddy are formed, come area
Divide different fingerprints.
Generally, the other places relative with paddy of the ridge of fingerprint skin near finger tip ratio comparatively dense, simultaneously near finger tip
Lines be all a closed loop loop.Quasiconductor induction apparatuss launch a radiofrequency signal, and signal reflects through the lines of fingerprint,
Different electric capacity are occurred on same contour plane.Thus, the lines near finger tip is loop and the quasiconductor of a closed loop
The capacitance that induction apparatuss are formed can be maximum, and the capacitance that skin elsewhere and quasiconductor induction apparatuss are formed then can be little very
Many, not in an order of magnitude.
First, need the finger print information of typing respective finger in advance, i.e. registered fingerprint storing, so that in subsequent touch
Mated with fingerprint sensor recognition result.In Input Process, finger contact fingerprint sensor can produce certain electric capacity
Value, its capacitance as corresponding default second capacitance of registered fingerprint and is stored.
Further, after target object is contacted with fingerprint sensor, the first capacitance can be produced, then obtain first
It is compared with the order of magnitude of default second capacitance to judge whether both orders of magnitude are consistent after the order of magnitude of capacitance,
So that it is determined that whether target object is finger.
Step 103, if the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, detects target object
Whether mate with registered fingerprint.
Step 104, if target object and registered fingerprint matching degree meet predetermined threshold value, according to default control instruction
Execution corresponding operating.
Specifically, in the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object is mated with registered fingerprint.
Wherein, the order of magnitude refers to a series of 10 power, and that is, the ratio between the two neighboring order of magnitude is 10.For example say two numbers
Three orders of magnitude of difference, in fact that is a number is big 1000 times than another.
For example, the first capacitance is 1000mF, and the second capacitance is 1400mF it is determined that the quantity of the first capacitance
Level and the order-of-magnitude agreement of the second capacitance.First capacitance is 1000mF, and the second capacitance is 14000mF it is determined that first
The order of magnitude of capacitance is inconsistent with the order of magnitude of the second capacitance.
Wherein, target object contact fingerprint sensor when, the image collecting is identified, and by recognition result with
Registered fingerprint is mated.And then, when target object meets predetermined threshold value with registered fingerprint matching degree, according to default control
Instruction execution corresponding operating.
Wherein, user can preset different control instructions according to actual needs.It is illustrated below：
Predetermined threshold value is 90%.
Example one：Control instruction is unlock instruction.
Specifically, it is 95% in target object and registered fingerprint matching degree, meet predetermined threshold value, thus to terminal unit
Unlocking screen.
Example two：Control instruction is payment instruction.
Specifically, it is 90% in target object and registered fingerprint matching degree, meets predetermined threshold value, thus carrying out to order
Pay operation.
The fingerprint identification method of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
Fig. 3 is the flow chart of fingerprint identification method in accordance with another embodiment of the present invention.
As shown in figure 3, the fingerprint identification method of the embodiment of the present invention comprises the following steps：
Step 201, obtains the registered fingerprint of user's typing.
Step 202, detection registered fingerprint contacts the second capacitance of fingerprint sensor generation and stores.
In particular it is required that prestoring registered fingerprint to contact the second capacitance that fingerprint sensor produces.Wherein, the second electricity
The detailed process that capacitance obtains can include：
First, user can use mobile terminal or application according to self-demand and personal operating habit for the first time
Before program, the finger print information of typing respective finger, so that mated with fingerprint sensor recognition result in subsequent touch.
Further, in the finger print information of typing respective finger, can produce certain during registered fingerprint contact fingerprint sensor
Capacitance, be designated as the second capacitance and stored.
Step 203, detects the first capacitance that the target object being contacted with fingerprint sensor is produced.
Step 204, judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, its
In, the second capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced.
Step 205, if the order of magnitude of the first capacitance is inconsistent with the order of magnitude of the second capacitance, feedback identifying loses
Lose response.
Step 206, if the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, detects target object
Whether mate with registered fingerprint.
Specifically, also can produce certain capacitance when target object is contacted with fingerprint sensor, be designated as first
Capacitance, and the order of magnitude of its order of magnitude and the second capacitance storing before is compared, it is determined whether consistent.
In the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, show to contact with fingerprint sensor
Target object is finger print, and then detects whether target object is mated with registered fingerprint.
When the order of magnitude of the first capacitance and the order of magnitude of the second capacitance are inconsistent, show that target object is not finger
Fingerprint, then feedback identifying failure response.
It should be noted that with regard to the description explained in description reference above-mentioned steps S101-S103 of the order of magnitude, here is not
Repeat again.
Step 207, if target object and registered fingerprint matching degree are unsatisfactory for predetermined threshold value, feedback identifying unsuccessfully rings
Should.
Step 208, if target object and registered fingerprint matching degree meet predetermined threshold value, according to default control instruction
Execution corresponding operating.
Specifically, in the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object is mated with registered fingerprint.
And then, when target object meets predetermined threshold value with registered fingerprint matching degree, executed according to default control instruction
Corresponding operating.
User can preset different control instructions according to actual needs, and, referring to step 104, here is no longer superfluous for concrete example
State.
It should be noted that target object and registered fingerprint matching degree are unsatisfactory for predetermined threshold value, then feedback identifying unsuccessfully rings
Should.
Continue, to be 85% in target object and registered fingerprint matching degree, be unsatisfactory for predetermined threshold value, instead taking above-mentioned example as a example
Feedback recognition failures response.
The fingerprint identification method of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
In order to realize above-described embodiment, the invention allows for a kind of fingerprint identification device.
Fig. 4 is the structural representation of fingerprint identification device according to an embodiment of the invention.
As shown in figure 4, this fingerprint recognition includes：First detection module 10, judge module 20, first processing module 30 and
Two processing modules 40.
Wherein, first detection module 10 is used for the first electric capacity of the target object generation that detection is contacted with fingerprint sensor
Value.
Judge module 20 is used for judging the order of magnitude of the order of magnitude of the first capacitance and default second capacitance whether
Cause, wherein, the second capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced.
First processing module 30 is used for, in the order-of-magnitude agreement of the order of magnitude and second capacitance of the first capacitance, detecting
Whether target object is mated with registered fingerprint.
Second processing module 40 is used for when target object meets predetermined threshold value with registered fingerprint matching degree, according to default
Control instruction executes corresponding operating.
First, need the finger print information of typing respective finger in advance, i.e. registered fingerprint storing, so that in subsequent touch
Mated with fingerprint sensor recognition result.In Input Process, finger contact fingerprint sensor can produce certain electric capacity
Value, its capacitance as corresponding default second capacitance of registered fingerprint and is stored.
Further, after target object is contacted with fingerprint sensor, the first capacitance can be produced, then obtain first
It is compared with the order of magnitude of default second capacitance to judge whether both orders of magnitude are consistent after the order of magnitude of capacitance,
So that it is determined that whether target object is finger.
Specifically, in the order-of-magnitude agreement of the order of magnitude of the first capacitance and the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object is mated with registered fingerprint.
Wherein, target object contact fingerprint sensor when, the image collecting is identified, and by recognition result with
Registered fingerprint is mated.And then, when target object meets predetermined threshold value with registered fingerprint matching degree, according to default control
Instruction execution corresponding operating.
It should be noted that the aforementioned explanation to fingerprint identification method embodiment is also applied for the fingerprint of this embodiment
Identifying device, it is realized principle and is similar to, and here is omitted.
The fingerprint identification device of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
Fig. 5 is the structural representation of fingerprint identification device in accordance with another embodiment of the present invention.
As shown in figure 5, on the basis of as shown in Figure 4, this fingerprint identification device also includes：Acquisition module 50 and the second inspection
Survey module 60.
Wherein, acquisition module 50 is used for obtaining the registered fingerprint of user's typing.
Second detection module 60 is used for detecting that registered fingerprint contacts the second capacitance of fingerprint sensor generation and stores.
In particular it is required that prestoring registered fingerprint to contact the second capacitance that fingerprint sensor produces.Wherein, the second electricity
The detailed process that capacitance obtains can include：
First, user can use mobile terminal or application according to self-demand and personal operating habit for the first time
Before program, the finger print information of typing respective finger, so that mated with fingerprint sensor recognition result in subsequent touch.
Further, in the finger print information of typing respective finger, can produce certain during registered fingerprint contact fingerprint sensor
Capacitance, be designated as the second capacitance and stored.
It should be noted that the aforementioned explanation to fingerprint identification method embodiment is also applied for the fingerprint of this embodiment
Identifying device, it is realized principle and is similar to, and here is omitted.
The fingerprint identification device of the embodiment of the present invention, the of the target object generation that detection contacts with fingerprint sensor first
One capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the
Two capacitances are the capacitances that the registered fingerprint that contacted with fingerprint sensor is produced, then in the order of magnitude and the of the first capacitance
During the order-of-magnitude agreement of two capacitances, whether detection target object is mated with registered fingerprint, finally refers to registration in target object
When stricture of vagina matching degree meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability of sensor false touch, improves accuracy and the effectiveness of fingerprint recognition.
Fig. 6 is the structural representation of terminal unit according to an embodiment of the invention.
Referring to Fig. 6, terminal unit 1000 can include following one or more assemblies：Processor 1001, memorizer 1002,
Power circuit 1003, multimedia groupware 1004, audio-frequency assembly 1005, the interface 1006 of input/output (I/O), sensor cluster
1007, and communication component 1008.
Power circuit 1003, for being each circuit of terminal unit or device is powered；Memorizer 1002 can for storage
Configuration processor code；Processor 1001 is run and executable by reading the executable program code of storage in memorizer 1002
The corresponding program of program code, for executing following steps：
Detect the first capacitance that the target object being contacted with fingerprint sensor is produced.
Judge whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the second electricity
Capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced.
If the order of magnitude of the first capacitance and the order-of-magnitude agreement of the second capacitance, detection target object whether with note
Volume fingerprint matching.
If target object and registered fingerprint matching degree meet predetermined threshold value, corresponding according to the execution of default control instruction
Operation.
It should be noted that the aforementioned explanation to fingerprint identification method embodiment is also applied for the terminal of this embodiment
Equipment, it is realized principle and is similar to, and here is omitted.
The terminal unit of the embodiment of the present invention, the first electricity that the target object that detection is contacted with fingerprint sensor first produces
Capacitance, then judges whether the order of magnitude of the first capacitance is consistent with the order of magnitude of default second capacitance, wherein, the second electricity
Capacitance is the capacitance that the registered fingerprint being contacted with fingerprint sensor is produced, then in the order of magnitude and second electricity of the first capacitance
During the order-of-magnitude agreement of capacitance, whether detection target object is mated with registered fingerprint, finally in target object and registered fingerprint
When degree of joining meets predetermined threshold value, corresponding operating is executed according to default control instruction.Thereby, it is possible to substantially reduce to fingerprint sensing
The probability of device false touch, improves accuracy and the effectiveness of fingerprint recognition.
In describing the invention it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can be expressed or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (11)
1. a kind of fingerprint identification method is it is characterised in that comprise the following steps：
Detect the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge whether the order of magnitude of described first capacitance is consistent with the order of magnitude of default second capacitance, wherein, described
Two capacitances are the capacitances that the registered fingerprint being contacted with described fingerprint sensor is produced；
If the order of magnitude of described first capacitance and the order-of-magnitude agreement of described second capacitance, detect described target object
Whether mate with described registered fingerprint；
If described target object and described registered fingerprint matching degree meet predetermined threshold value, executed according to default control instruction
Corresponding operating.
2. the method for claim 1 is it is characterised in that also include：
If the order of magnitude of described first capacitance is inconsistent with the order of magnitude of described second capacitance, feedback identifying unsuccessfully rings
Should.
3. the method for claim 1 is it is characterised in that also include：
If described target object and described registered fingerprint matching degree are unsatisfactory for predetermined threshold value, feedback identifying failure response.
4. the method for claim 1 is it is characterised in that the target object being contacted with fingerprint sensor in described detection is produced
Before the first raw capacitance, also include：
Obtain the registered fingerprint of user's typing；
Detect the second capacitance of the described fingerprint sensor generation of described registered fingerprint contact and store.
5. the method for claim 1 is it is characterised in that described execute corresponding operating, bag according to default control instruction
Include：
According to the unlocking screen to terminal unit for the default unlock instruction；Or,
Delivery operation is carried out to order according to default payment instruction.
6. a kind of fingerprint identification device is it is characterised in that include：
First detection module, for detecting the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge module, for judging the order of magnitude of the order of magnitude of described first capacitance and default second capacitance whether
Cause, wherein, described second capacitance is the capacitance that the registered fingerprint being contacted with described fingerprint sensor is produced；
First processing module, in the order-of-magnitude agreement of the order of magnitude and described second capacitance of described first capacitance,
Detect whether described target object is mated with described registered fingerprint；
Second processing module, for when described target object meets predetermined threshold value with described registered fingerprint matching degree, according to pre-
If control instruction execution corresponding operating.
7. device as claimed in claim 6 is it is characterised in that described first processing module is additionally operable to：
When the order of magnitude of described first capacitance and the order of magnitude of described second capacitance are inconsistent, feedback identifying unsuccessfully rings
Should.
8. device as claimed in claim 6 is it is characterised in that described Second processing module is additionally operable to：
When described target object is unsatisfactory for predetermined threshold value with described registered fingerprint matching degree, feedback identifying failure response.
9. device as claimed in claim 6 is it is characterised in that also include：
Acquisition module, for obtaining the registered fingerprint of user's typing；
Second detection module, for detecting the second capacitance of the described fingerprint sensor generation of described registered fingerprint contact and depositing
Storage.
10. device as claimed in claim 6 is it is characterised in that described Second processing module is used for：
According to the unlocking screen to terminal unit for the default unlock instruction；Or,
Delivery operation is carried out to order according to default payment instruction.
A kind of 11. terminal units are it is characterised in that include：Housing, processor, memorizer, circuit board and power circuit, wherein,
Described circuit board is placed in the interior volume that described housing surrounds, and described processor and described memorizer are arranged on described circuit board
On；Described power circuit, for being each circuit of terminal unit or device is powered；Described memorizer is used for storing executable journey
Sequence code；Described processor is run and described executable journey by reading the executable program code of storage in described memorizer
The corresponding program of sequence code, for executing following steps：
Detect the first capacitance that the target object being contacted with fingerprint sensor is produced；
Judge whether the order of magnitude of described first capacitance is consistent with the order of magnitude of default second capacitance, wherein, described
Two capacitances are the capacitances that the registered fingerprint being contacted with described fingerprint sensor is produced；
If the order of magnitude of described first capacitance and the order-of-magnitude agreement of described second capacitance, detect described target object
Whether mate with described registered fingerprint；
If described target object and described registered fingerprint matching degree meet predetermined threshold value, executed according to default control instruction
Corresponding operating.
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| CN106446818B (en) | 2019-08-09 |
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