CN102833423A - 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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- CN102833423A CN102833423A CN2012103563108A CN201210356310A CN102833423A CN 102833423 A CN102833423 A CN 102833423A CN 2012103563108 A CN2012103563108 A CN 2012103563108A CN 201210356310 A CN201210356310 A CN 201210356310A CN 102833423 A CN102833423 A CN 102833423A
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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 touch-screen mobile phone login unlock method based on fingerprint recognition.
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 very convenient really, as long as finger tip one bumps gently, just can easily finish the work.The terminal of mobile phone development is " machine is wandered through the world at hand ".For example can through mobile phone remote open family water heater, can carry out the bank transfer business, can carry out identification etc. through mobile phone through mobile phone.Store huge amount of information in this slight mobile phone, greatly facilitated and simplified people's life.But potential problem is just following, and that is exactly a safety issue.Present mobile phone adopts multi-point touch release or simple numerical to set release mostly, and this mobile phone cipher function very easily is cracked, and can not guarantee the fail safe of machine master information.
Therefore, this area demands occurring adopting the technical scheme of encrypting fingerprint deciphering mobile phone end urgently.
Summary of the invention
The purpose of this invention is to provide a kind of mobile phone login release technical scheme based on fingerprint recognition, finger print data that can be through user's input whether with database in Data Matching, can get into cell phone system when judging the user who has this fingerprint with this.
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 touch-screen from outside to inside, touches detection part, display and touch-screen sensing controler; Behind the touch-screen sensing controler, fingerprint capturer is set, the cpu of fingerprint capturer gained images acquired input handset.
The also corresponding touch-screen mobile phone login unlock method that provides a kind of based on fingerprint recognition of the present invention may further comprise the steps:
Step 1 judges whether sample fingerprint will be set, and being then provides the fingerprint input frame on touch-screen, gathers finger print data that the fingerprint input frame obtains as sample fingerprint, and sample fingerprint is stored in the database of mobile phone, verifies otherwise get into step 2;
Step 2 provides the fingerprint input frame on touch-screen, gather the finger print data that the 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; Judging whether coupling, is the system that then gets into mobile phone, otherwise gets into step 3;
Step 3 judges whether the checking number of times reaches the preset checking number of times upper limit, is then to get into step 4, verifies again otherwise return step 2 next time;
Step 4, the PIN code of prompting user input handset, whether the PIN code of judges input handset is correct, is the system that then gets into mobile phone, otherwise is prohibited from entering the system of mobile phone.
And the sample fingerprint of collection finger more than also is stored in the database of mobile phone; When entering step 2 is verified; The key icon of respective number is provided on touch-screen; When the user clicks a certain key icon, the fingerprint input frame is provided, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone on touch-screen.
And when gathering the finger print data that the fingerprint input frame obtains, whether the coordinate of first judges input in the fingerprint input frame, be then images acquired to be carried out the image preliminary treatment and the characteristic information that takes the fingerprint, 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, whether the coordinate of judges input is in the fingerprint input frame.
Scheme provided by the present invention is that a kind of fail safe to the mode of touch-screen mobile phone release nowadays is low and safe, the unlock method that is difficult for cracking that propose can effectively avoid malice to steal the behavior of machine master important information, protection machine master's privacy.
Description of drawings
Fig. 1 is a first interface sketch map in the embodiment of the invention;
Fig. 2 is the sketch map of fingerprint input interface in the embodiment of the invention;
Fig. 3 is the sketch map of successful log-in interface in the embodiment of the invention;
Fig. 4 is the sketch map that re-enters the fingerprint interface in the embodiment of the invention;
Fig. 5 is when fingerprint is opened failure in the embodiment of the invention, the interface sketch map of the emergency access button of migrating;
Fig. 6 passes through the interface sketch map that PIN code gets into mobile phone in the embodiment of the invention;
Fig. 7 is the flow chart of the embodiment of the invention;
Fig. 8 is a mobile phone screen sketch map in the embodiment of the invention.
Embodiment
Specify technical scheme of the present invention below in conjunction with accompanying drawing and embodiment.
The touch-screen mobile phone unlock method based on dynamic password that the embodiment of the invention provides can adopt software engineering to realize, flow chart is referring to Fig. 7:
Step 1 judges whether sample fingerprint will be set, and being then provides the fingerprint input frame on touch-screen, gathers finger print data that the fingerprint input frame obtains as sample fingerprint, and sample fingerprint is stored in the database of mobile phone, verifies otherwise get into step 2.
When using this function first, need to gather sample fingerprint.This checks function setting such as fingerprint number of times and welcome words comprising processes such as fingerprint recognition, fingerprint storage and system.The 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 subsequent authentication uses database to preserve.Can in the central processing unit (CPU) of mobile phone, reserve the space of storage finger print data.
Step 2 provides the fingerprint input frame on touch-screen, gather the finger print data that the 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; Judging whether coupling, is the system that then gets into mobile phone, otherwise gets into step 3.
Step 3 judges whether the checking number of times reaches the preset checking number of times upper limit, is then to get into step 4, verifies again otherwise return step 2 next time.
The checking number of times upper limit can according to circumstances be provided with by user or cell phone manufacturer in advance, and embodiment is set to 3.
Step 4, the PIN code of prompting user input handset, whether the PIN code of judges input handset is correct, is the system that then gets into mobile phone, otherwise is prohibited from entering the system of mobile phone.
Step 2,3,4 realizes proof procedures, when the finger print data of having stored in the fingerprint of user's input and the database is complementary, just can successfully login cell phone system; If both can't mate, then eject prompt window, require the user to re-enter fingerprint and check, till the checking number of times upper limit that the user is provided with.If can't successful release in the checking number of times upper limit of regulation, then launch emergency access---PIN code.But the PIN code of user's input handset carries out the 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 mainly is the thin-film body layer of plating layer of transparent on glass screen, adds the lastblock cover glass at conductor layer again, and 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; When in electric conductor, forming a low-voltage AC field user touch screen, because people's bulk electric field can form a coupling capacitance between finger and conductor layer; The electric current that four limit electrodes send can flow to the contact; Be directly proportional with the distance of pointing electrode and electric current is strong and weak, be positioned at ratio and power that controller after the touch screen just can calculate electric current, accurately calculate touch point position.Two glass of capacitance touch screen not only can be protected conductor and inductor, prevent that more effectively the external environment factor from impacting touch-screen, even if screen speckles with filthy dust or oil stain, capacitive touch screen still can accurately be calculated touch location.
The user gathers through the touch sensing technology the contact of touch-screen, can adopt prior art.The screen of touch-screen mobile phone is followed successively by from outside to inside in the prior art: touch-screen, touch detection part, display, touch-screen sensing controler.The touch sensing controller provides some general performance option and forms at present, like slide block and proximity sense.The progress of touch sensor technologies makes sensor drive type interface be easier to realize, and is more directly perceived and simple to the terminal use.Most of touch sensing controllers come work according to detected capacitance variations.When certain object or someone near or during the conductive metal sheet of touch sensor, the electric capacity between finger and the sheet metal changes.Conductive body (like finger) moves near transducer and will change the electric field line of capacitance sensor and electric capacity is changed.Control circuit can be measured changes in capacitance.Touch sensor interface detects capacitance variations through the impedance of measuring the circuit that links to each other with the transducer pad usually.Touch controller periodically the measuring transducer input channel impedance and be worth with these and derive internal reference, i.e. a calibration impedance.Controller serves as that the basis judges whether touch event has taken place with this resistance value.
Step 1 collection sample fingerprint and step 2 are obtained finger print data and need be carried out fingerprint recognition.Concrete fingerprint recognition has two kinds of prior art: A at present, reads fingerprint image, and the somatic fingerprint image that tentatively reads is carried out clear processing; Set up the numerical characteristic data of fingerprint; Utilize fuzzy comparison method, compare importing fingerprint and having deposited fingerprint.B, capture and capture equipment, optical device (historical remote) 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 (in the finger print imaging technology extraordinary one type, suggestion is used).Through dual mode is compared, preceding a kind of price is low, volume is little, discrimination is high.
Be to improve the fingerprint recognition effect, can carry out the figure image intensifying: be clean or scar, drying are arranged, when moistening, can not obtain distinct image when finger.In order to overcome this phenomenon, can design a filter that is fit to, matees 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, the radio frequency sensor technology is to launch micro-radiofrequency signal through transducer itself, the epidermal area that penetrates finger removes the lines of detection nexine, obtains best fingerprint image.Therefore to doing finger; Difficulty finger such as Chinese finger is through can be up to 99%, and false proof fingerprint ability is strong, and the recognition principle of a fingerprint sensor corium skin to the people responds; Fundamentally stopped the problem of artificial fingerprint, wide warm area: be fit to cold especially or extremely hot especially area.Because radio frequency sensor produces high-quality image, so radio-frequency technique is the most reliable, the strongest solution.In addition, high quality graphic also allows to reduce transducer, need not to sacrifice the reliability of authentication, thereby reduces cost and make the radio frequency sensor Application of thought in removable and big or small unconstrained any field.
The present invention further proposes, and can gather more than one the sample fingerprint of finger and is stored in the database of mobile phone; When entering step 2 is verified; The key icon of respective number is provided on touch-screen; When the user clicks a certain key icon, the fingerprint input frame is provided, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone on touch-screen.
For ease of implementing reference, provide the concrete realization flow of embodiment to explain as follows:
(1) when the user uses this function first, need carry out the finger print data collection, through after the 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 substep.
(1.1) as shown in Figure 8, the screen of the used mobile phone of embodiment 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, for example crystal probe etc.In the database 106 of gained fingerprint storage to mobile phone.
After the user's finger touch was installed in the touch-screen of display front end, system carried out data analysis according to finger in the fingerprint typing of assigned address.Before the touch detection part was positioned at display screen, main effect was to detect user touch location, and the main effect of touch-screen sensing controler is to accept touch information from touch detecting apparatus, and converted thereof into out point coordinates, sent the CPU of mobile phone again to; Fingerprint capturer is gathered the image of fingerprint simultaneously, gained images acquired input CPU.At this moment coordinate values will compare with the coordinate values (with preset fingerprint input frame position consistency) of fingerprint capturer, and within the coordinate of fingerprint processor, then CPU begins to carry out the processing of fingerprint image as if the coordinate of importing.
(1.2) fingerprint image is handled and is mainly comprised IMAQ, image preliminary treatment, minutiae point extraction and fingerprint matching.Wherein accomplished IMAQ through fingerprint capturer in (1.1), next the image input cpu that fingerprint capturer is gathered need carry out the image preliminary treatment.Pretreated purpose is the noise of removing in the image, becomes width of cloth point and line chart clearly to it, so that extract correct fingerprint characteristic, thereby reaches correct match.Preprocessing process mainly comprises fingerprint normalization, The disposal of gentle filter, direction enhancement process, binaryzation, refinement etc., can adopt prior art, and the present invention will not give unnecessary details.
(1.3) characteristic information that on the basis of step (1.2), takes the fingerprint obtains the fingerprint characteristic template, promptly can be used as sample fingerprint and is stored to the valid data in the fingerprint database.
The processing procedure of above fingerprint image can adopt software programming technique to be carried out by cpu and realize; Also can the modularized design of image preprocessing process be realized for adopting image converter, realize for adopting the fingerprint template processor but generate the modularized design of input fingerprint characteristic template.The fingerprint capturer output image is to image converter, and image converter outputs to the fingerprint template processor, stores database then into.
In order to raise the efficiency, during practical implementation, when importing fingerprint, the user can carry out the location and the judgement of fingerprint contact earlier through touch-screen; When gathering the finger print data that the fingerprint input frame obtains; Elder generation is according to the coordinate information of the cpu of input handset after the collection of touch-screen sensing controler; Whether the coordinate of judges input is in the fingerprint input frame; Be then images acquired to be carried out the image preliminary treatment and the characteristic information that takes the fingerprint, otherwise prompting is re-entered.Can compare with the coordinate values of touch-screen sensing controler and the coordinate values of fingerprint processor through touching detection part, within the coordinate of fingerprint processor, then CPU begins to carry out the processing of fingerprint image as if the coordinate of the content of being imported.The fingerprint of being imported adopts fingerprint processor to handle and obtains the fingerprint characteristic template, and it is deposited in the database in prescribed limit the time.
In the step 2, whether the coordinate of first judges input is then to contrast the sample fingerprint of storing in the database of finger print data that the fingerprint input frame obtains and mobile phone in the fingerprint input frame, re-enters otherwise point out.
(2) user uses mobile phone at every turn, and the checking use is following:
The user uses mobile phone at every turn, when lighting screen, can occur the existing lock of a fan the Chinese style gate (next door, gate have one or side by side pendulum several keys are arranged (according to the fingerprint number decision of lane database.Be that fingerprint base has a fingerprint, a key arranged on the desktop), like Fig. 1.
When the user clicked the key icon, screen can show white space as shown in Figure 2 as the fingerprint input area, ejected " open command " prompting user and imported fingerprint.Collection, image to the input fingerprint are consistent with (1) implementation with processing, and concrete coupling can adopt prior art.
") can see the mobile phone DESKTOP INFORMATION after opening the door, like Fig. 3.
If user's fingerprint matching is unsuccessful, then can ejects information and " please re-enter instruction " and require the user to re-enter in the fingerprint region.Simultaneously, door lock can increase a lock (number that door lock increases is relevant by the checking number of times that the machine master sets, and for example, it is three that the machine master sets the checking number of times, and then the door lock maximum has 3), two locks occurred like Fig. 4.
Screen could show that " sorry, unlatching is unsuccessful, and you can't get into if three verifying authorizations use up! ", like Fig. 5, three locks have appearred.
In order to ensure interfering with this machine machine master and can't normally use mobile phone because of discerning factor such as unintelligible, when situation as shown in Figure 5 took place, the lower right corner of desktop had " emergency access " printed words.When the user clicked, screen can eject the prompting of " please import this machine PIN code ", like Fig. 6.At this moment the user is as long as the input correct PIN code can enter into the cell phone system of oneself.
If the user finally can't the release mobile phone or mobile phone when losing, the user can arrive on the official website of this mobile phone brand and report the loss.Behind the perfect instruments such as identity card of input oneself, just can read the important information of downloading oneself through cloud service.The user needs oneself information uploading under the prerequisite of Cloud Server, just can download the information of reading in use.So both can protect the copyright of crudely-made articles mobile phone, distinguish mutually, can be user's safe service of providing convenience again with the smuggled cell phone service.
The finger print data that obtains in the proof procedure is specifically realized consistent with the concrete realization of collection sample fingerprint in (1).
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes 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 (5)
1. touch-screen mobile phone based on fingerprint recognition; The screen of mobile phone is followed successively by touch-screen from outside to inside, touches detection part, display and touch-screen sensing controler; It is characterized in that: behind the touch-screen sensing controler, fingerprint capturer is set, the cpu of fingerprint capturer gained images acquired input handset.
2. a login unlock method that is used for the said touch-screen mobile phone based on fingerprint recognition of claim 1 is characterized in that, may further comprise the steps:
Step 1 judges whether sample fingerprint will be set, and being then provides the fingerprint input frame on touch-screen, gathers finger print data that the fingerprint input frame obtains as sample fingerprint, and sample fingerprint is stored in the database of mobile phone, verifies otherwise get into step 2;
Step 2 provides the fingerprint input frame on touch-screen, gather the finger print data that the 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; Judging whether coupling, is the system that then gets into mobile phone, otherwise gets into step 3;
Step 3 judges whether the checking number of times reaches the preset checking number of times upper limit, is then to get into step 4, verifies again otherwise return step 2 next time;
Step 4, the PIN code of prompting user input handset, whether the PIN code of judges input handset is correct, is the system that then gets into mobile phone, otherwise is prohibited from entering the system of mobile phone.
3. login unlock method according to claim 2 is characterized in that: the sample fingerprint of collection finger more than also is stored in the database of mobile phone; When entering step 2 is verified; The key icon of respective number is provided on touch-screen; When the user clicks a certain key icon, the fingerprint input frame is provided, the corresponding sample fingerprint of storing in the finger print data that contrast fingerprint input frame obtains and the database of mobile phone on touch-screen.
4. according to claim 2 or 3 described login unlock methods; It is characterized in that: when gathering the finger print data that the fingerprint input frame obtains; Whether the coordinate of elder generation's judges input is in the fingerprint input frame; Be then images acquired to be carried out the image preliminary treatment and the characteristic information that takes the fingerprint, otherwise prompting is re-entered.
5. login unlock method according to claim 4 is characterized in that: according to the coordinate information of the cpu of input handset after the collection of touch-screen sensing controler, whether the coordinate of judges input is in the fingerprint input frame.
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