CN106446818B - Fingerprint identification method, device and terminal device - Google Patents
Fingerprint identification method, device and terminal device Download PDFInfo
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- CN106446818B CN106446818B CN201610832171.XA CN201610832171A CN106446818B CN 106446818 B CN106446818 B CN 106446818B CN 201610832171 A CN201610832171 A CN 201610832171A CN 106446818 B CN106446818 B CN 106446818B
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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 kind of fingerprint identification method, device and terminal devices, wherein this method comprises: the first capacitor value that the target object that detection is contacted with fingerprint sensor generates；Judge whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the second capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates；If the order-of-magnitude agreement of the order of magnitude of first capacitor value and the second capacitance, detect whether target object matches with registered fingerprint；If target object and registered fingerprint matching degree meet preset threshold, corresponding operating is executed according to preset control instruction.Through the embodiment of the present invention, the probability accidentally touched to fingerprint sensor can be substantially reduced, the accuracy and validity of fingerprint recognition are improved.
Description
Technical field
The present invention relates to fingerprint identification technology field more particularly to a kind of fingerprint identification methods, device and terminal device.
Background technique
Currently, fingerprint recognition can be not only used for the unlock and wake-up of mobile terminal as the continuous of fingerprint recognition is popularized
Etc. functions and the important ring of mobile payment.Increasingly pay attention to the accuracy of fingerprint recognition as a result,.
In the related technology, using active unlock, i.e. fingerprint sensor externally carries out transmitting signal incessantly, at any time
Prepare to be unlocked processing to all " fingerprints " that enters induction region, as long as the contact of any skin of this user can all occur
There is the touchings of the mistake of high probability for unlock processing.
Summary of the invention
The purpose of the present invention is intended to solve above-mentioned one of technical problem at least to a certain extent.
For this purpose, the first purpose of this invention is to propose a kind of fingerprint identification method, this method can be substantially reduced pair
The probability that fingerprint sensor accidentally touches, improves the accuracy and validity 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 device.
In order to achieve the above object, a kind of fingerprint identification method that embodiment proposes according to a first aspect of the present invention, including it is following
Step:
Detect the first capacitor value that the target object contacted with fingerprint sensor generates；
Judge whether the order of magnitude of the first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein institute
Stating the second capacitance is the capacitance that the registered fingerprint contacted with the fingerprint sensor generates；
If the order-of-magnitude agreement of the order of magnitude of the first capacitor value and second capacitance, detects the target
Whether object matches with the registered fingerprint；
If the target object and the registered fingerprint matching degree meet preset threshold, according to preset control instruction
Execute corresponding operating.
The of the target object generation that the fingerprint identification method of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity of fingerprint recognition.
In order to achieve the above object, a kind of fingerprint identification device that embodiment proposes according to the second aspect of the invention, comprising:
First detection module, the first capacitor value generated for detecting the target object contacted with fingerprint sensor；
Judgment module, for judge the first capacitor value the order of magnitude and preset second capacitance the order of magnitude whether
Unanimously, wherein second capacitance is the capacitance that the registered fingerprint contacted with the fingerprint sensor generates；
First processing module, the order-of-magnitude agreement for the order of magnitude and second capacitance in the first capacitor value
When, detect whether the target object matches with the registered fingerprint；
Second processing module, for when the target object and the registered fingerprint matching degree meet preset threshold, root
Corresponding operating is executed according to preset control instruction.
The of the target object generation that the fingerprint identification device of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity of fingerprint recognition.
In order to achieve the above object, a kind of terminal device that embodiment proposes according to the third aspect of the invention we, comprising: shell,
Processor, memory, circuit board and power circuit, wherein the circuit board is placed in the space interior that the shell surrounds, institute
It states processor and the memory is arranged on the circuit board；The power circuit, for each circuit for terminal device
Or device power supply；The memory is for storing executable program code；The processor is deposited by reading in the memory
The executable program code of storage runs program corresponding with the executable program code, for executing following steps:
Detect the first capacitor value that the target object contacted with fingerprint sensor generates；
Judge whether the order of magnitude of the first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein institute
Stating the second capacitance is the capacitance that the registered fingerprint contacted with the fingerprint sensor generates；
If the order-of-magnitude agreement of the order of magnitude of the first capacitor value and second capacitance, detects the target
Whether object matches with the registered fingerprint；
If the target object and the registered fingerprint matching degree meet preset threshold, according to preset control instruction
Execute corresponding operating.
The first electricity that the target object that the terminal device of the embodiment of the present invention, first detection are contacted with fingerprint sensor generates
Capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the second electricity
Capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the second electricity
When the order-of-magnitude agreement of capacitance, whether detection target object matches with registered fingerprint, finally in target object and registered fingerprint
When meeting preset threshold with degree, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint sensing
The probability that device accidentally touches, improves the accuracy and validity of fingerprint recognition.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
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 schematic diagram of fingerprint identification device according to an embodiment of the invention；
Fig. 5 is the structural schematic diagram of fingerprint identification device in accordance with another embodiment of the present invention；And
Fig. 6 is the structural schematic diagram of terminal device according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the fingerprint identification method, device and terminal device 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 the following steps are included:
Step 101, the first capacitor value that the target object that detection is contacted with fingerprint sensor generates.
Step 102, judge whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance,
In, the second capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates.
In general, terminal equipment configuration has the operation such as active unlocked by fingerprint, payment, i.e., fingerprint sensor is right incessantly
It is outer to carry out transmitting signal, it is ready to carry out operation processing to all " fingerprints " that enters induction region, as long as however user times
Operation processing can all occur for the contact of what skin, and there is the touchings of the mistake of high probability.
The embodiment of the invention provides a kind of fingerprint identification methods as a result, before matching with registered fingerprint, according to fingerprint
After the capacitance situation of sensor judges that target object is finger print, further target object is matched with registered fingerprint,
The probability accidentally touched to fingerprint sensor can be substantially reduced, the accuracy and validity of fingerprint recognition are improved.
Specifically, the fingerprint sensor of the embodiment of the present invention is capacitive fingerprint sensor, is based on capacitance and capacitance electrode
Between the physical principle that is inversely proportional of distance, it is electric to the coupling between sensor surface electrod-array that measurement body surface can be passed through
Hold, body surface space structure is imaged, such as the rough space characteristics of the ridge paddy of fingerprint are imaged.Furthermore it is possible to
It is different by the capacitance size formed between the ridge and paddy and semiconductor capacitive particle of fingerprint, to distinguish different fingerprints.Specifically
Structure combination Fig. 2 is described 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
After fingerprint tough to the induction region of semiconductor inductor, the different capacitance sizes of the ridge of different fingerprints and paddy formation come area
Divide different fingerprints.
In general, the ridge of the fingerprint skin near finger tip and paddy are relatively other local than comparatively dense, while near finger tip
Lines be all a closed loop circuit.Semiconductor inductor emits a radiofrequency signal, and signal is reflected by the lines of fingerprint,
Occurs different capacitors on the same contour plane.The lines near finger tip is the circuit and semiconductor of a closed loop as a result,
The capacitance that inductor is formed can be maximum, and skin elsewhere and semiconductor inductor be formed by capacitance then can be small very
It is more, not in an order of magnitude.
Firstly, need the finger print information of typing respective finger in advance, i.e., registered fingerprint and store, so that in subsequent touch
It is matched with fingerprint sensor recognition result.In Input Process, finger contact fingerprint sensor can generate certain capacitor
Value, corresponds to preset second capacitance as registered fingerprint for its capacitance and stores.
Further, after target object is contacted with fingerprint sensor, it can produce first capacitor value, then obtain first
It is compared after the order of magnitude of capacitance with the order of magnitude of preset second capacitance to judge whether the order of magnitude of the two is consistent,
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 first capacitor value and the second capacitance, detects target object
Whether matched with registered fingerprint.
Step 104, if target object and registered fingerprint matching degree meet preset threshold, according to preset control instruction
Execute corresponding operating.
Specifically, in the order of magnitude of first capacitor value and the order-of-magnitude agreement of the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object matches with registered fingerprint.
Wherein, the order of magnitude refers to a series of 10 power, i.e., the ratio between the two neighboring order of magnitude is 10.Such as say two numbers
Three orders of magnitude are differed, in fact that is a number is 1000 times bigger than another.
For example, first capacitor value is 1000mF, and the second capacitance is 1400mF, it is determined that the quantity of first capacitor value
The order-of-magnitude agreement of grade and the second capacitance.First capacitor value is 1000mF, and the second capacitance is 14000mF, it is determined that first
The order of magnitude of capacitance and the order of magnitude of the second capacitance are inconsistent.
Wherein, target object contact fingerprint sensor when, acquired image is identified, and by recognition result with
Registered fingerprint is matched.In turn, when target object and registered fingerprint matching degree meet preset threshold, according to preset control
Instruction execution corresponding operating.
Wherein, user can preset different control instructions according to actual needs.It is illustrated below:
Preset threshold is 90%.
Example one: control instruction is unlock instruction.
Specifically, it is 95% in target object and registered fingerprint matching degree, meets preset threshold, thus to terminal device
Unlocking screen.
Example two: control instruction is payment instruction.
Specifically, it is 90% in target object and registered fingerprint matching degree, meets preset threshold, to prop up order
Pay operation.
The of the target object generation that the fingerprint identification method of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity 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 the following steps are included:
Step 201, the registered fingerprint of user's typing is obtained.
Step 202, detection registered fingerprint contacts the second capacitance of fingerprint sensor generation and stores.
In particular it is required that the second capacitance that registered fingerprint contact fingerprint sensor generates is stored in advance.Wherein, the second electricity
Capacitance obtain detailed process may include:
Firstly, 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 as to be matched in subsequent touch with fingerprint sensor recognition result.
Further, in the finger print information of typing respective finger, registered fingerprint can generate certain when contacting fingerprint sensor
Capacitance, be denoted as the second capacitance and stored.
Step 203, the first capacitor value that the target object that detection is contacted with fingerprint sensor generates.
Step 204, judge whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance,
In, the second capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates.
Step 205, if the order of magnitude of first capacitor value and the order of magnitude of the second capacitance are inconsistent, feedback identifying is lost
Lose response.
Step 206, if the order-of-magnitude agreement of the order of magnitude of first capacitor value and the second capacitance, detects target object
Whether matched with registered fingerprint.
Specifically, certain capacitance can be also generated when target object and fingerprint sensor contact, is denoted as first
Capacitance, and its order of magnitude is compared with the order of magnitude of the second capacitance stored before, it is determined whether it is consistent.
First capacitor value the order of magnitude and the second capacitance order-of-magnitude agreement when, show to contact with fingerprint sensor
Target object is finger print, and then detects whether target object matches with registered fingerprint.
In the order of magnitude of first capacitor value and the inconsistent order of magnitude of the second capacitance, show that target object is not finger
Fingerprint, then feedback identifying failure response.
It should be noted that the explanation description about the order of magnitude refers to the description in above-mentioned steps S101-S103, herein not
It repeats again.
Step 207, if target object and registered fingerprint matching degree are unsatisfactory for preset threshold, feedback identifying is unsuccessfully rung
It answers.
Step 208, if target object and registered fingerprint matching degree meet preset threshold, according to preset control instruction
Execute corresponding operating.
Specifically, in the order of magnitude of first capacitor value and the order-of-magnitude agreement of the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object matches with registered fingerprint.
In turn, it when target object and registered fingerprint matching degree meet preset threshold, is executed according to preset control instruction
Corresponding operating.
User can preset different control instructions according to actual needs, and concrete example is no longer superfluous herein referring to step 104
It states.
It should be noted that target object and registered fingerprint matching degree are unsatisfactory for preset threshold, then feedback identifying is unsuccessfully rung
It answers.
Continue by taking above-mentioned example as an example, is 85% in target object and registered fingerprint matching degree, is unsatisfactory for preset threshold, instead
Present recognition failures response.
The of the target object generation that the fingerprint identification method of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity of fingerprint recognition.
In order to realize above-described embodiment, the invention also provides a kind of fingerprint identification devices.
Fig. 4 is the structural schematic diagram of fingerprint identification device according to an embodiment of the invention.
As shown in figure 4, the fingerprint recognition includes: first detection module 10, judgment module 20, first processing module 30 and
Two processing modules 40.
Wherein, first detection module 10 is used to detect the first capacitor that the target object contacted with fingerprint sensor generates
Value.
Judgment module 20 be used for judge first capacitor value the order of magnitude and preset second capacitance the order of magnitude whether one
It causes, wherein the second capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates.
First processing module 30 be used for first capacitor value the order of magnitude and the second capacitance order-of-magnitude agreement when, detect
Whether target object matches with registered fingerprint.
Second processing module 40 is used for when target object and registered fingerprint matching degree meet preset threshold, according to preset
Control instruction executes corresponding operating.
Firstly, need the finger print information of typing respective finger in advance, i.e., registered fingerprint and store, so that in subsequent touch
It is matched with fingerprint sensor recognition result.In Input Process, finger contact fingerprint sensor can generate certain capacitor
Value, corresponds to preset second capacitance as registered fingerprint for its capacitance and stores.
Further, after target object is contacted with fingerprint sensor, it can produce first capacitor value, then obtain first
It is compared after the order of magnitude of capacitance with the order of magnitude of preset second capacitance to judge whether the order of magnitude of the two is consistent,
So that it is determined that whether target object is finger.
Specifically, in the order of magnitude of first capacitor value and the order-of-magnitude agreement of the second capacitance, show and fingerprint sensing
The target object of device contact is finger print, and then detects whether target object matches with registered fingerprint.
Wherein, target object contact fingerprint sensor when, acquired image is identified, and by recognition result with
Registered fingerprint is matched.In turn, when target object and registered fingerprint matching degree meet preset threshold, according to preset control
Instruction execution corresponding operating.
It should be noted that the aforementioned fingerprint for being also applied for the embodiment to the explanation of fingerprint identification method embodiment
Identification device, realization principle is similar, and details are not described herein again.
The of the target object generation that the fingerprint identification device of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity of fingerprint recognition.
Fig. 5 is the structural schematic diagram 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, the fingerprint identification device further include: obtain module 50 and the second inspection
Survey module 60.
Wherein, the registered fingerprint that module 50 is used to obtain user's typing is obtained.
Second detection module 60 is used to detect the second capacitance that registered fingerprint contact fingerprint sensor generates and stores.
In particular it is required that the second capacitance that registered fingerprint contact fingerprint sensor generates is stored in advance.Wherein, the second electricity
Capacitance obtain detailed process may include:
Firstly, 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 as to be matched in subsequent touch with fingerprint sensor recognition result.
Further, in the finger print information of typing respective finger, registered fingerprint can generate certain when contacting fingerprint sensor
Capacitance, be denoted as the second capacitance and stored.
It should be noted that the aforementioned fingerprint for being also applied for the embodiment to the explanation of fingerprint identification method embodiment
Identification device, realization principle is similar, and details are not described herein again.
The of the target object generation that the fingerprint identification device of the embodiment of the present invention, first detection are contacted with fingerprint sensor
One capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the
Two capacitances are the capacitances that the registered fingerprint that contacts with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the
When the order-of-magnitude agreement of two capacitances, whether detection target object matches with registered fingerprint, finally refers in target object and registration
When line matching degree meets preset threshold, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint
The probability that sensor accidentally touches, improves the accuracy and validity of fingerprint recognition.
Fig. 6 is the structural schematic diagram of terminal device according to an embodiment of the invention.
Referring to Fig. 6, terminal device 1000 may include following one or more components: processor 1001, memory 1002,
Power circuit 1003, multimedia component 1004, audio component 1005, the interface 1006 of input/output (I/O), sensor module
1007 and communication component 1008.
Power circuit 1003, for each circuit or the device power supply for terminal device；Memory 1002 can for storing
Execute program code；Processor 1001 runs and can be performed by reading the executable program code stored in memory 1002
The corresponding program of program code, for executing following steps:
Detect the first capacitor value that the target object contacted with fingerprint sensor generates.
Judge whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the second electricity
Capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates.
If the order-of-magnitude agreement of the order of magnitude of first capacitor value and the second capacitance, detect target object whether with note
Volume fingerprint matching.
If target object and registered fingerprint matching degree meet preset threshold, executed according to preset control instruction corresponding
Operation.
It should be noted that the aforementioned terminal for being also applied for the embodiment to the explanation of fingerprint identification method embodiment
Equipment, realization principle is similar, and details are not described herein again.
The first electricity that the target object that the terminal device of the embodiment of the present invention, first detection are contacted with fingerprint sensor generates
Capacitance then judges whether the order of magnitude of first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein the second electricity
Capacitance is the capacitance that the registered fingerprint contacted with fingerprint sensor generates, then in the order of magnitude of first capacitor value and the second electricity
When the order-of-magnitude agreement of capacitance, whether detection target object matches with registered fingerprint, finally in target object and registered fingerprint
When meeting preset threshold with degree, corresponding operating is executed according to preset control instruction.Thereby, it is possible to substantially reduce to fingerprint sensing
The probability that device accidentally touches, improves the accuracy and validity of fingerprint recognition.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of fingerprint identification method, which comprises the following steps:
Detect the first capacitor value that the target object contacted with fingerprint sensor generates；
Judge whether the order of magnitude of the first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein described
Two capacitances are the capacitances that the registered fingerprint contacted with the fingerprint sensor generates；
If the order-of-magnitude agreement of the order of magnitude of the first capacitor value and second capacitance, detects the target object
Whether matched with the registered fingerprint；
If the target object and the registered fingerprint matching degree meet preset threshold, executed according to preset control instruction
Corresponding operating；Wherein, different control instructions are determined from the registered fingerprint matching degree according to the different target objects.
2. the method as described in claim 1, which is characterized in that further include:
If the order of magnitude of the first capacitor value and the order of magnitude of second capacitance are inconsistent, feedback identifying is unsuccessfully rung
It answers.
3. the method as described in claim 1, which is characterized in that further include:
If the target object and the registered fingerprint matching degree are unsatisfactory for preset threshold, feedback identifying failure response.
4. the method as described in claim 1, which is characterized in that produced in the target object contacted with fingerprint sensor that detects
Before raw first capacitor value, further includes:
Obtain the registered fingerprint of user's typing；
The registered fingerprint is detected to contact the second capacitance of the fingerprint sensor generation and store.
5. the method as described in claim 1, which is characterized in that described to execute corresponding operating, packet according to preset control instruction
It includes:
According to preset unlock instruction to the unlocking screen of terminal device；Or,
Delivery operation is carried out to order according to preset payment instruction.
6. a kind of fingerprint identification device characterized by comprising
First detection module, the first capacitor value generated for detecting the target object contacted with fingerprint sensor；
Judgment module, for judge the first capacitor value the order of magnitude and preset second capacitance the order of magnitude whether one
It causes, wherein second capacitance is the capacitance that the registered fingerprint contacted with the fingerprint sensor generates；
First processing module, when for the order of magnitude in the first capacitor value and the order-of-magnitude agreement of second capacitance,
Detect whether the target object matches with the registered fingerprint；
Second processing module, for when the target object and the registered fingerprint matching degree meet preset threshold, according to pre-
If control instruction execute corresponding operating；Wherein, it is determined according to the different target objects and the registered fingerprint matching degree
Different control instructions.
7. device as claimed in claim 6, which is characterized in that the first processing module is also used to:
In the order of magnitude of the first capacitor value and the inconsistent order of magnitude of second capacitance, feedback identifying is unsuccessfully rung
It answers.
8. device as claimed in claim 6, which is characterized in that the Second processing module is also used to:
When the target object and the registered fingerprint matching degree are unsatisfactory for preset threshold, feedback identifying failure response.
9. device as claimed in claim 6, which is characterized in that further include:
Module is obtained, for obtaining the registered fingerprint of user's typing；
Second detection module contacts the second capacitance that the fingerprint sensor generates and deposits for detecting the registered fingerprint
Storage.
10. device as claimed in claim 6, which is characterized in that the Second processing module is used for:
According to preset unlock instruction to the unlocking screen of terminal device；Or,
Delivery operation is carried out to order according to preset payment instruction.
11. a kind of terminal device characterized by comprising shell, processor, memory, circuit board and power circuit, wherein
The circuit board is placed in the space interior that the shell surrounds, and the processor and the memory are arranged in the circuit board
On；The power circuit, for each circuit or the device power supply for terminal device；The memory is for storing executable journey
Sequence code；The processor is run and the executable journey by reading the executable program code stored in the memory
The corresponding program of sequence code, for executing following steps:
Detect the first capacitor value that the target object contacted with fingerprint sensor generates；
Judge whether the order of magnitude of the first capacitor value is consistent with the order of magnitude of preset second capacitance, wherein described
Two capacitances are the capacitances that the registered fingerprint contacted with the fingerprint sensor generates；
If the order-of-magnitude agreement of the order of magnitude of the first capacitor value and second capacitance, detects the target object
Whether matched with the registered fingerprint；
If the target object and the registered fingerprint matching degree meet preset threshold, executed according to preset control instruction
Corresponding operating；Wherein, different control instructions are determined from the registered fingerprint matching degree according to the different target objects.
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| CN107071147B (en) * | 2017-03-08 | 2020-01-14 | Oppo广东移动通信有限公司 | Parameter adjusting method and device |
| CN109657656B (en) * | 2019-01-31 | 2021-04-09 | 北京集创北方科技股份有限公司 | Fingerprint detection method, fingerprint detection device and mobile terminal |
| CN111241513A (en) * | 2020-01-09 | 2020-06-05 | 深圳传音控股股份有限公司 | Touch control method, terminal and storage medium |
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