CN102833423B - Touch screen mobile phone based on fingerprint identification and login unlocking method for touch screen mobile phone - Google Patents
Touch screen mobile phone based on fingerprint identification and login unlocking method for touch screen mobile phone Download PDFInfo
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- CN102833423B CN102833423B CN201210356310.8A CN201210356310A CN102833423B CN 102833423 B CN102833423 B CN 102833423B CN 201210356310 A CN201210356310 A CN 201210356310A CN 102833423 B CN102833423 B CN 102833423B
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Abstract
The invention discloses a touch screen mobile phone based on fingerprint identification and a login unlocking method for the touch screen mobile phone. A fingerprint acquirer is arranged behind a touch screen sensing controller. When the touch screen mobile phone is logged in and unlocked, the login unlocking method comprises the following steps of: 1, judging whether a fingerprint sample needs to be set, and if so, providing a fingerprint input frame on a touch screen, collecting fingerprint data acquired in the fingerprint input frame and storing the fingerprint data as the fingerprint sample, otherwise, entering into the step 2 for checking; 2, collecting the fingerprint data acquired in the fingerprint input frame provided on the touch screen, comparing the fingerprint data acquired in the fingerprint input frame with the fingerprint sample, judging whether the fingerprint data is matched with the fingerprint sample, and if the fingerprint data is matched with the fingerprint sample, entering a system of the mobile phone, otherwise, stepping into the step 3; 3, judging whether the number of checking times reaches a preset checking time upper limit, and if the number of checking times reaches the preset checking time upper limit, entering into the step 4, otherwise, returning to the step 2 for rechecking; and 4, indicating a user to input a personal identification number (PIN) code of the mobile phone, judging whether the PIN code of the mobile phone is correct, and if the PIN code of the mobile is correct, entering into the system of the mobile phone, otherwise, forbidding the user to enter into the system of the mobile phone.
Description
Technical field
The present invention relates to the fail safe field of mobile communication, relate in particular to a kind of login of the touch-screen mobile phone based on fingerprint recognition unlock method.
Background technology
The epoch of touch-screen have been opened by Apple, and touch-screen mobile phone has become people's new lover.Touch-screen is really very convenient, as long as finger tip one touches gently, just can easily finish the work.The terminal of mobile phone development is " machine, at hand, is wandered through the world ".For example can by mobile phone remote open family water heater, can carry out bank transfer business, can carry out identification etc. by mobile phone by mobile phone.In this slight mobile phone, store huge amount of information, greatly facilitated and simplified people's life.But potential problem is just following, that is exactly safety issue.Present mobile phone adopts multi-point touch release or simple numeral to set release mostly, and this mobile phone cipher function is very easily cracked, and can not ensure the fail safe of owner's information.
Therefore urgently there is adopting the technical scheme of encrypting fingerprint deciphering mobile phone terminal in this area.
Summary of the invention
The object of this invention is to provide a kind of mobile phone based on fingerprint recognition login release technical scheme, the finger print data that can input by user whether with database in Data Matching, when judging with this user who has this fingerprint, can enter cell phone system.
Technical scheme of the present invention provides a kind of touch-screen mobile phone based on fingerprint recognition, the screen of mobile phone is followed successively by from outside to inside touch-screen, touches detection part, display and touch-screen sensing controler, after touch-screen sensing controler, fingerprint capturer is set, fingerprint capturer gained gathers the cpu of input hand image machine.
The present invention is also corresponding provides a kind of touch-screen mobile phone based on fingerprint recognition to login unlock method, comprises the following steps:
Step 1, judges whether sample fingerprint will be set, and be provides fingerprint input frame on touch-screen, gathers finger print data that fingerprint input frame obtains as sample fingerprint, and sample fingerprint is stored in the database of mobile phone, verifies otherwise enter step 2;
Step 2 provides fingerprint input frame on touch-screen, gathers the finger print data that fingerprint input frame obtains, the sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone, judge whether coupling, be the system that enters mobile phone, otherwise enter step 3;
Step 3, judges whether checking number of times reaches the default checking number of times upper limit, is to enter step 4, re-starts checking next time otherwise return to step 2;
Step 4, the PIN code of prompting user input handset, judges that whether the PIN code of user's input handset is correct, is the system that enters mobile phone, otherwise is prohibited from entering the system of mobile phone.
And, gather a sample fingerprint of pointing above and be stored in the database of mobile phone; When entering step 2 while verifying, the key icon of respective number is provided on touch-screen, in the time that user clicks a certain key icon, on touch-screen, provide fingerprint input frame, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone.
And, while gathering the finger print data that fingerprint input frame obtains, first judge that coordinate that user inputs whether in fingerprint input frame, be to carry out image preliminary treatment the characteristic information that takes the fingerprint to gathering image, otherwise prompting is re-entered.
And, according to the coordinate information of the cpu of input handset after the collection of touch-screen sensing controler, judge that the coordinate of user input is whether in fingerprint input frame.
Scheme provided by the present invention is that a kind of fail safe for touch-screen mobile phone unlocking manner is nowadays low and safe, the unlock method that is difficult for cracking that propose can effectively avoid malice to steal the behavior of owner's important information, protection owner's privacy.
Brief description of the drawings
Fig. 1 is first interface schematic diagram in the embodiment of the present invention;
Fig. 2 is the schematic diagram of fingerprint input interface in the embodiment of the present invention;
Fig. 3 is the schematic diagram of successful log-in interface in the embodiment of the present invention;
Fig. 4 is the schematic diagram that re-enters fingerprint interface in the embodiment of the present invention;
Fig. 5 is when in the embodiment of the present invention, fingerprint is opened unsuccessfully, the interface schematic diagram of conversion emergency access button;
Fig. 6 is the interface schematic diagram that enters mobile phone in the embodiment of the present invention by PIN code;
Fig. 7 is the flow chart of the embodiment of the present invention;
Fig. 8 is mobile phone screen schematic diagram in the embodiment of the present invention.
embodiment
Describe technical solution of the present invention in detail below in conjunction with drawings and Examples.
The touch-screen mobile phone unlock method based on dynamic password that the embodiment of the present invention provides can adopt software engineering to realize, and flow chart is referring to Fig. 7:
Step 1, judges whether sample fingerprint will be set, and be provides fingerprint input frame on touch-screen, gathers finger print data that fingerprint input frame obtains as sample fingerprint, and sample fingerprint is stored in the database of mobile phone, verifies otherwise enter step 2.
While using first this function, need to gather sample fingerprint.This comprising the process such as fingerprint recognition, fingerprint storage and System Core to function setting such as fingerprint number of times and welcome words.User can add finger print data to database according to demands of individuals.The database of mobile phone can adopt existing techniques in realizing, the data with existing that preserve in subsequent authentication usage data storehouse.Can in the central processing unit of mobile phone (CPU), reserve the space of storage finger print data.
Step 2 provides fingerprint input frame on touch-screen, gathers the finger print data that fingerprint input frame obtains, the sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone, judge whether coupling, be the system that enters mobile phone, otherwise enter step 3.
Step 3, judges whether checking number of times reaches the default checking number of times upper limit, is to enter step 4, re-starts checking next time otherwise return to step 2.
The checking number of times upper limit can according to circumstances be arranged in advance by user or cell phone manufacturer, and embodiment is set to 3.
Step 4, the PIN code of prompting user input handset, judges that whether the PIN code of user's input handset is correct, is the system that enters mobile phone, otherwise is prohibited from entering the system of mobile phone.
Step 2,3,4 realizes proof procedure, in the time that the finger print data of having stored in the fingerprint of user input and database matches, just can successfully login cell phone system; If both cannot mate, eject prompt window, require user re-enter fingerprint and check, until the checking number of times upper limit that user arranges.If cannot successful release in the checking number of times upper limit of regulation, enable emergency access---PIN code.User can input handset PIN code carry out mobile phone release.
Through comparative analysis, the present invention advises that it is capacitive touch screen that mobile phone adopts optimum touch-screen.The structure of capacitive touch screen is mainly the thin-film body layer that plates layer of transparent in glass screen, then at the additional lastblock cover glass of conductor layer, conductor layer and inductor can be thoroughly protected in two glass designs.Capacitive touch screen all plates long and narrow electrode on touch-screen four limits, form a low-voltage AC electric field user touch screen in electric conductor time, due to people's bulk electric field, between finger and conductor layer, can form a coupling capacitance, the electric current that four limit electrodes send can flow to contact, be directly proportional to the distance of electrode with pointing and electric current is strong and weak, be positioned at controller after touch screen and just can calculate ratio and the power of electric current, accurately calculate the position of touch point.Two glass of capacitance touch screen not only can be protected conductor and inductor, more effectively prevent that external environment factor from impacting touch-screen, even if screen speckles with filthy dust or oil stain, capacitive touch screen still can accurately calculate touch location.
User gathers by touch sensing technology the contact of touch-screen, can adopt prior art.In prior art, the screen of touch-screen mobile phone is followed successively by from outside to inside: touch-screen, touch detection part, display, touch-screen sensing controler.Touch sensing controller provides some general performance option and forms at present, as slide block and proximity sense.The progress of touch sensor technologies makes the driving interface of transducer be easier to realize, more directly perceived and simple to terminal use.Most of touch sensing controllers carry out work according to detected capacitance variations.When certain object or someone approach or when the conductive metal sheet of touch sensor, finger changes with the electric capacity between sheet metal.Conductive body (as finger) is mobile near transducer will be changed the electric field line of capacitance sensor and electric capacity be changed.Control circuit can be measured the variation of electric capacity.Touch sensor interface carrys out Detection capacitance variation by measuring the impedance of the circuit being connected with transducer pad conventionally.Touch controller periodically measuring transducer input channel impedance and be worth to derive internal reference, i.e. a calibration impedance with these.Controller determines whether touch event has occurred as basis taking this resistance value.
Step 1 gathers sample fingerprint and step 2 and obtains finger print data and need to carry out fingerprint recognition.Concrete fingerprint recognition has two kinds of prior art: A, fetching finger mark image at present, and the somatic fingerprint image tentatively reading is carried out to clear processing; Set up the numerical characteristic data of fingerprint; Utilize fuzzy comparison method, contrast inputting fingerprint and having deposited fingerprint.B, capture and imaging equipment, optical device (long history), utilizes the total reflection principle of light; Advantage: volume little (3*1*1 inch); Fiber optic, miniature prism matrix, silicon crystal sensor (recently), for example: capacitance sensor, temperature sense transducer, ultrasonic scanning (an extraordinary class in technique for Fingerprint Images Capture, suggestion is used).By to two kinds of mode comparisons, front a kind of price is low, volume is little, discrimination is high.
For improving fingerprint recognition effect, can carry out figure image intensifying: when finger is clean or have scar, when dry, moistening, can not obtain image clearly.In order to overcome this phenomenon, can design a filter being applicable to, mate and appropriate threshold values.Can be with reference to the biological radio frequency sensor of the third generation: the biological radio-frequency fingerprint recognition technology of the third generation, radio frequency sensor technology is to launch micro-radiofrequency signal by transducer itself, the epidermal area that penetrates finger removes the lines of detection nexine, obtains best fingerprint image.Therefore to dry finger, the difficulty finger such as Chinese finger is by can be up to 99%, and false proof fingerprint ability is strong, and the recognition principle of fingerprint sensor responds to people's corium skin, fundamentally stop the problem of artificial fingerprint, wide warm area: be applicable to cold especially or extremely hot especially area.Because radio frequency sensor produces high-quality image, therefore radio-frequency technique is the most reliable, the strongest solution.In addition, high quality graphic also allows to reduce transducer, without the reliability of sacrificing certification, thereby reduces costs and makes in the removable and big or small unconstrained any field of being applied to of radio frequency sensor thought.
The present invention further proposes, and can gather a sample fingerprint of pointing above and be stored in the database of mobile phone; When entering step 2 while verifying, the key icon of respective number is provided on touch-screen, in the time that user clicks a certain key icon, on touch-screen, provide fingerprint input frame, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone.
For ease of implementing reference, provide the specific implementation process description of embodiment as follows:
(1) in the time that user uses this function first, need carry out finger print data collection, after information processing, these data are deposited to database.This step is the integrated application of collection, image and processing to finger print data, comprises following sub-step.
(1.1) as shown in Figure 8, the screen of embodiment mobile phone used is followed successively by from outside to inside: touch-screen 101, touch detection part 102, display 103, touch-screen sensing controler 104 and fingerprint capturer 105.Fingerprint capturer can be with reference to existing techniques in realizing, such as crystal probe etc.Gained fingerprint storage is to the database 106 of mobile phone.
After user's finger touch is arranged on the touch-screen of display front end, system is carried out data analysis according to finger in the fingerprint typing of assigned address.Touch detection part and be positioned at before display screen, Main Function is to detect user touch location, and the Main Function of touch-screen sensing controler is to accept touch information from touch detecting apparatus, and converts thereof into out point coordinates, then sends the CPU of mobile phone to; Fingerprint capturer gathers the image of fingerprint simultaneously, and gained gathers image input CPU.At this moment coordinate values will compare with the coordinate values of fingerprint capturer (with default fingerprint input frame position consistency), if input coordinate within the coordinate of fingerprint processor, CPU starts to carry out the processing of fingerprint image.
(1.2) fingerprint image is processed and is mainly comprised IMAQ, image preliminary treatment, minutiae extraction and fingerprint matching.Wherein completed IMAQ by fingerprint capturer in (1.1), the image input cpu that fingerprint capturer gathers, next needs to carry out image preliminary treatment.Pretreated object is the noise of removing in image, and it is become to width point and line chart clearly, to extract correct fingerprint characteristic, thereby reaches correct coupling.Preprocessing process mainly comprises fingerprint normalization, the disposal of gentle filter, orientation enhancement processing, binaryzation, refinement etc., can adopt prior art, and it will not go into details in the present invention.
(1.3) characteristic information that takes the fingerprint on the basis of step (1.2), obtains fingerprint characteristic template, can be used as sample fingerprint and is stored to the valid data in fingerprint database.
The processing procedure of above fingerprint image can adopt software programming technique to be carried out and realized by cpu, also can be the realization of employing image converter by the modularized design of image preprocessing process, generating input fingerprint characteristic template can modularized design be the realization of employing fingerprint template processor.Fingerprint capturer output image is to image converter, and image converter outputs to fingerprint template processor, then stores database into.
In order to raise the efficiency, while specifically enforcement, when inputting fingerprint, user can first carry out location and the judgement of fingerprint contact by touch-screen; In the time gathering the finger print data that fingerprint input frame obtains, first according to the coordinate information of the cpu of input handset after the collection of touch-screen sensing controler, judge that the coordinate of user input is whether in fingerprint input frame, be to carry out image preliminary treatment the characteristic information that takes the fingerprint to gathering image, otherwise prompting is re-entered.Can compare by touching detection part and the coordinate values of touch-screen sensing controler and the coordinate values of fingerprint processor, if the coordinate of the content of inputting within the coordinate of fingerprint processor, CPU starts to carry out the processing of fingerprint image.The fingerprint of inputting in prescribed limit time, adopts fingerprint processor processing to obtain fingerprint characteristic template, and is deposited in database.
In step 2, first judging that coordinate that user inputs is whether in fingerprint input frame, be to contrast the sample fingerprint of storing in the database of finger print data that fingerprint input frame obtains and mobile phone, otherwise prompting is re-entered.
(2) user uses mobile phone at every turn, and checking use procedure is as follows:
User uses mobile phone at every turn, while lighting screen, there will be the existing lock of a fan Chinese style gate (side, gate have one or side by side pendulum have several keys (to determine according to the fingerprint number of lane database.Be that fingerprint base has a fingerprint, on desktop, have a key), as Fig. 1.
In the time that user clicks key icon, screen can show that white space is as shown in Figure 2 as fingerprint input area, ejects " open command " prompting user and inputs fingerprint.Collection, image to input fingerprint are consistent with (1) implementation with processing, and concrete coupling can adopt prior art.
") can see mobile phone desktop information after opening the door, as Fig. 3.
If user's fingerprint matching is unsuccessful, can ejects information and " please re-enter instruction " and require user to re-enter in fingerprint region.Meanwhile, door lock can increase a lock (the checking number of times set by owner of number that door lock increases is relevant, and for example, it is three that owner sets checking number of times, and door lock maximum has 3), as two locks have appearred in Fig. 4.
If three times verifying authorization is finished, screen can show " sorry, open unsuccessfully, you cannot enter! ", as Fig. 5, there are three locks.
In order to ensure interfering with the machine owner and cannot normally use mobile phone because identifying the factor such as unintelligible, in the time that situation occurs as shown in Figure 5, the lower right corner of desktop has " emergency access " printed words.In the time that user clicks, screen can eject the prompting of " please input the machine PIN code ", as Fig. 6.At this moment user is as long as the correct PIN code of input can enter into the cell phone system of oneself.
If user finally cannot release mobile phone or mobile phone while losing, user can arrive on the official website of this mobile phone brand and report the loss.After the perfect instruments such as the own identity card of input, just can read by cloud service the important information of download oneself.User needs the information of oneself to upload under the prerequisite of Cloud Server in use, just can download reading information.So both can protect the copyright of crudely-made articles mobile phone, and distinguish with smuggled cell phone service, can be again user's safe service of providing convenience.
Obtaining in proof procedure gathers sample fingerprint specific implementation in finger print data specific implementation and (1) is consistent.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (1)
1. the login unlock method of the touch-screen mobile phone based on fingerprint recognition, the screen of described mobile phone is followed successively by from outside to inside touch-screen, touches detection part, display and touch-screen sensing controler, it is characterized in that: after touch-screen sensing controler, fingerprint capturer is set, fingerprint capturer gained gathers the cpu of input hand image machine, logging in releasing process comprises the following steps
Step 1, judge whether sample fingerprint will be set, that fingerprint input frame is provided on touch-screen, the finger print data that collection fingerprint input frame obtains is as sample fingerprint, gather a sample fingerprint of pointing above and sample fingerprint be stored in the database of mobile phone, verifying otherwise enter step 2;
Step 2, the key icon of respective number is provided on touch-screen, in the time that user clicks a certain key icon, fingerprint input frame is provided on touch-screen, gather the finger print data that fingerprint input frame obtains, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone, judges whether coupling, be the system that enters mobile phone, otherwise enter step 3;
Step 3, judges whether checking number of times reaches the default checking number of times upper limit, is to enter step 4, re-starts checking next time otherwise return to step 2;
Step 4, the PIN code of prompting user input handset, judges that whether the PIN code of user's input handset is correct, is the system that enters mobile phone, otherwise is prohibited from entering the system of mobile phone;
When finger print data that described collection fingerprint input frame obtains, first according to the coordinate information of the cpu of input handset after the collection of touch-screen sensing controler, judge that the coordinate of user input is whether in fingerprint input frame, be to carry out image preliminary treatment the characteristic information that takes the fingerprint to gathering image, otherwise prompting is re-entered.
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| CN102075601A (en) * | 2011-01-14 | 2011-05-25 | 扬州永信计算机有限公司 | Mobile phone speed dialing method based on fingerprint recognition |
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2012
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