CN103092500A

CN103092500A - Method for unlocking screen, touch screen and electronic equipment

Info

Publication number: CN103092500A
Application number: CN2012100961423A
Authority: CN
Inventors: 王杰; 毕芳; 张俊超
Original assignee: Hanwang Technology Co Ltd
Current assignee: Beijing Hanvon Saip Technology Co ltd
Priority date: 2011-10-31
Filing date: 2012-04-01
Publication date: 2013-05-08
Anticipated expiration: 2032-04-01
Also published as: CN103092500B

Abstract

The invention discloses a method for unlocking a screen, a touch screen and electronic equipment. The method comprises the following steps of: setting at least two screen unlocking security classifications, and inputting corresponding screen unlocking information in different security classifications; starting one of the screen unlocking security classifications; detecting the input information for unlocking which is inputted at any positions of the touch screen; calling an identification engine, and identifying the input information to acquire an identification result; and comparing the identification result with a preset result, and if the identification result is consistent with the preset result, allowing a display interface of the touch screen to be in the unlocking state. By utilizing a screen unlocking technology, the information safety of the electronic equipment can be ensured effectively, the unlocking of the screen due to misoperation can be avoided effectively, and user experience is improved.

Description

Unlocking screen method, touch-screen and electronic equipment

Technical field

The present invention relates to the Information Technology Agreement field, relate in particular to a kind of unlocking screen method, touch-screen and electronic equipment based on the identification handwriting information.

Background technology

Along with the development of infotech, increasing electronic equipment all uses touch-screen as the screen of input operation.And for preventing the touched generation maloperation of electronic equipment touch-screen when not using, or in order to guarantee the privacy of information in electronic equipment, existing electronic equipment all has screen locking and unlocking function.

at present common touch screen unlocking mode mainly comprises following types: be 1) that release pattern on slider bar slip touch-screen is realized release along fixing showing paths, can realize release so long as reach certain proportion along the slider bar slip, the setting of slider bar in this scheme, limited the scope that the release pattern slides, the user can only be along this slider bar slip ability release, arrange rigid, secondly, the user is with the electronic equipment pocket of packing into, knapsack, in the process of carrying, if accidentally touch the release pattern, very likely in the touching process, the release pattern begins to slide along slider bar and causes release, thereby, the mode of this slip release not only easily produces maloperation, and anyone is easy to unlock screen, information in electronic equipment can not guarantee safety, 2) based on 1) in the concrete scheme of other various slip releases of deriving of the theory of slip release, as the pattern release that shows on mobile chess piece release, divided display, these unlock methods exist equally the slip release to be easy to maloperation and can not guarantee the defective of electronic device information security, 3) position and the number of times solution screen by clicking, this method uses loaded down with trivial details, inadequate hommization, although before reliability ratio, two schemes is higher, but owing to having shown the release prompting on screen, might be carried out release according to the release prompting to screen by the people equally, still have potential safety hazard.

The detailed protocol of some touch screen unlockings is found in some patent documentations, for example, be a kind of scheme of the release of sliding that discloses in the patent of CN101371258B authorizing publication number, this scheme is to show unlock image on screen, by the user, unlock image is moved to the precalculated position or moves unlock image along predefined paths, realize the release of screen.In this scheme, unlock image must be presented on screen can separate screen.As long as anyone can realize separating screen according to the release prompting.

Again for example, disclose a kind ofly according to touch gestures release or the scheme that enters the respective application interface in publication number is the patent documentation of US2011/0041102A1, this scheme need to be in the prompting that touches the screen display release or enter the respective application interface.The user can several gestures of registration in advance, and set up the related of gesture and release, corresponding function interface, and thus, the user inputs gesture by this gesture solution screen of identification or opening function interface very easily according to the release prompting.This scheme need to show the release prompting on screen, anyone can separate screen according to the release prompting.

As seen, these touch screen unlocking schemes of prior art in use, there is the defective that maloperation easily occurs, exist and use loaded down with trivial details defective, but a common defective that exists is, owing to all can showing the release information on screen, the user just can release according to the corresponding release answer of this release prompting input, and this is difficult to the security of guarantee information.

More and more pay attention to the age of individual private information at this, in a single day the user loses the control to one's own handheld device, just can't prevent that other people from separating screen according to the prompting of the release on screen, and then recognize some private informations of user in handheld device, and especially for high-end business people, canned data in the handheld device of carrying, some trade secrets often, in case reveal, will cause the harmful effect that to retrieve, or bring immeasurable loss.

Therefore, according to the ubiquitous information security issue of touch screen unlocking scheme in prior art, be necessary to propose a kind of Information Security that can guarantee electronic equipment, be not easy simultaneously to occur the touch screen unlocking mode of maloperation, easy to operate and hommization.

Summary of the invention

In order to overcome the problems that in prior art, the touch screen unlocking mode exists, the present invention proposes a kind of unlocking screen method, touch-screen and electronic equipment, different levels of confidentiality is set in electronic equipment according to the actual requirements by the user, not only can guarantee the high privacy of electronic device information, also can guarantee the advantage such as simple operation, hommization of unlocking screen, thereby can satisfy different user's requests.

Unlocking screen method of the present invention comprises: at least two kinds of unlocking screen levels of confidentiality are set, under different levels of confidentiality, need the corresponding unlocking screen information of input, and the function of application that can use in electronic equipment are also different after different level of confidentiality releases; Enable wherein a kind of unlocking screen level of confidentiality; Detection is in the input message that is used for release of touch-screen optional position input; Call the identification engine, this input message is identified to obtain recognition result; Recognition result and default result are compared, if comparison is consistent, the display interface of this touch-screen is placed in released state.

Described level of confidentiality comprises High Security Level and Low Security Level, and at High Security Level, screen does not show the release prompting, at Low Security Level, and screen display release prompting.Described Low Security Level further comprises: the first level of confidentiality, this level of confidentiality refer to when touch-screen is in screen by lock status, are touching release prompting of screen display, and when input was pointed out corresponding release information with release, screen was unlocked; The second level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching the one or more release promptings of screen display, each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting, the related corresponding display interface of each release prompting, when the input message on screen was consistent with one of them release answer, touch-screen entered the release prompting related display interface corresponding with input message.Described High Security Level further comprises: the 3rd level of confidentiality, refer to when touch-screen is in screen by lock status, and do not show the release information on screen, a password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen; The 4th level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, the password that sets in advance in the input of touch-screen optional position, as the release information of touch-screen, set password is one or more, and the password that arranges is carried out functional mapping, input different passwords, touch-screen is enabled different functions.Being used for information that the release touch-screen inputs by the User Defined setting, is numeral, word, figure or its combination in any.

In the situation that the second level of confidentiality, electronic equipment receives the screen locking instruction, makes described touch-screen be in screen lock state, and in described touch screen display the first release prompting and the second release prompting; The first default result that the recognition result of identification engine is related with the first release prompting is compared, if comparison unanimously, the display interface of this touch-screen is placed in the first release points out corresponding the first display interface that is in released state; Recognition result and related the second default result of the second release prompting are compared, if comparison is consistent, the display interface of this touch-screen is placed in the second release points out corresponding the second display interface that is in application interface; Wherein, the first release prompting is different from the second release prompting.

Wherein, described detection also comprises for before the input message of release touch-screen optional position input: receive the screen locking instruction, make touch-screen be in screen lock state, if touching screen display release prompting, comprise that random call release prompting shows showing on touch-screen or call all the time identical release prompting on touch-screen.

Wherein, described identification engine is configured to identify the handwritten form trace information of input, and this handwritten form trace information comprises the combination in any of one of character trace information, symbol trace information, shape trace information or character trace information, symbol trace information, shape trace information.

Wherein, described detection comprises in the input message that is used for release of touch-screen optional position input: detect pressing touch event and lifting touch event of occuring when touch-screen is in screen lock state, record tracks to take this touch point of pressing touch event the trace information that forms as terminal point take this touch point of lifting event as starting point.

Wherein, described detection the input of touch-screen optional position be used for also comprise step before the input message of release: set up the handwritten form Sample Storehouse at the identification engine, sample to the character in this handwritten form Sample Storehouse carries out training study acquisition sample characteristics, and described sample characteristics is trained for the template of character.

Wherein, after described sample characteristics being trained for the template of character, be the corresponding machine-language coding of template-setup of each character in the handwritten form Sample Storehouse.

Wherein, set up the direction histogram that the handwritten form Sample Storehouse comprises the steps: to obtain each sample of same character; Direction histogram to each character is got average, obtains the average direction histogram of each character; Based on mean distance, all average direction histograms are carried out cluster, obtain a plurality of direction histogram templates as cluster centre.

Wherein, the described identification engine that calls is identified to obtain recognition result to this input message and is comprised the steps: the trace information of handwriting input is carried out pre-service; The pre-service result is carried out normalized; Extract the characteristic of the trace information after normalized, and carry out characteristic matching and calculate with sample characteristics in described handwritten form Sample Storehouse.

Wherein, described trace information to handwriting input carries out also comprising step before pre-service: the track to handwriting input carries out slant correction, described slant correction comprises the steps: the first stroke of a Chinese character point of the track of definite handwriting input, with the fixed point of this first stroke of a Chinese character point as slant correction; Obtain the direction histogram of the track of handwriting input; Compare with the direction histogram template after cluster in Sample Storehouse, determine the angle of inclination of the track of handwriting input; According to angle of inclination and the fixed point of the track of handwriting input, carry out the slant correction of the track of handwriting input.

Wherein, the characteristic of the trace information after described extraction normalized, and and described handwritten form Sample Storehouse in sample characteristics carry out characteristic matching and comprise after calculating: the template that will calculate the distance minimum between the template of the character in characteristic and handwritten form Sample Storehouse is as the highest template of confidence level, and exports machine-language coding corresponding to this template; According to the machine-language coding of output, the character that this machine-language coding is corresponding is as recognition result.

Wherein, described track to handwriting input carries out also comprising before slant correction that the trace information of handwriting input is carried out piece according to the structural information of track to be cut apart and obtain a plurality of blocks.

Wherein, describedly this input message is identified to obtain recognition result comprise: the recognition result that obtains each block; The recognition result of each block is made up obtains the combination score, and with the combination that obtains as the identification candidate; And combination corresponding to combination score that will be the highest be as identification candidate's first-selection, and should first-selection as recognition result.

Wherein, show release when prompting on being in the touch-screen of screen lock state, describedly this input message is identified to obtain recognition result comprise: the recognition result that obtains each block; The recognition result of each block is made up obtains the combination score, and with the combination that obtains as the identification candidate; And obtain the release prompting, by the language model of setting up, the identification candidate of given number and the combination between the release prompting are given a mark; The identification candidate that score is the highest is as first-selection, and should first-selection as recognition result.

Wherein, the described soft keyboard that shows when touching screen display release prompting for input message, the self-defined input message that is used for release that arranges on described detection touch-screen of described software keyboard comprises: detect the coded message that is used for release of inputting on touch-screen, wherein, described coded message is inputted by soft keyboard.

Wherein, described identification engine is configured to identify the coded message of input.

Wherein, described recognition result and default result are compared, if compare inconsistently, the inconsistent prompting of output comparison makes this touch-screen remain on screen lock state and again shows the release prompting or do not show the release prompting.

The present invention also provides a kind of touch-screen, it comprises: password setting device is used at least two kinds of unlocking screen levels of confidentiality are set, under different levels of confidentiality, need the corresponding unlocking screen information of input, and the function of application that can use in electronic equipment after release under different levels of confidentiality is also different; Described pick-up unit, the input message that is used for release for detection of in touch-screen optional position input sends to recognition device with the input message that detects, and the consistent result of comparison of recognition device feedback is sent to tripper; Described recognition device is used for calling the identification engine, this input message is identified to obtain recognition result, and recognition result and default result are compared, and comparison result is sent to pick-up unit; Described tripper is used for the consistent result of comparison that receiving detection device sends, and the display interface of this touch-screen is placed in released state; Wherein, described recognition device comprises: the slant correction unit, carry out slant correction to the trace information of handwriting input; Pretreatment unit carries out pre-service to the result of slant correction; The normalization unit carries out normalized to the pre-service result; The characteristic matching unit extracts the characteristic of the trace information after normalized, and carries out characteristic matching and calculate with sample characteristics in default handwritten form Sample Storehouse; The recognition result acquiring unit will calculate the minimum template of distance as the highest template of confidence level, and exports machine-language coding corresponding to this template between the template of the character in characteristic and handwritten form Sample Storehouse; According to the machine-language coding of output, the character that this machine-language coding is corresponding is as recognition result.

Wherein, described level of confidentiality comprises High Security Level and Low Security Level, and at High Security Level, screen does not show the release prompting, at Low Security Level, and screen display release prompting.Described Low Security Level further comprises: the first level of confidentiality, this level of confidentiality refer to when touch-screen is in screen by lock status, are touching release prompting of screen display, and when input was pointed out corresponding release information with release, screen was unlocked; The second level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching the one or more release promptings of screen display, each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting, the related corresponding display interface of each release prompting, when the input message on screen was consistent with one of them release answer, touch-screen entered the release prompting related display interface corresponding with input message.Described High Security Level further comprises: the 3rd level of confidentiality, refer to when touch-screen is in screen by lock status, and do not show the release information on screen, a password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen; The 4th level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, the password that sets in advance in the input of touch-screen optional position, as the release information of touch-screen, set password is one or more, and the password that arranges is carried out functional mapping, when the input password not simultaneously, the function that is activated in electronic equipment is also different.

Wherein, being used for information that the release touch-screen inputs by the User Defined setting, is numeral, word, figure or its combination in any.

Wherein, in the second level of confidentiality, in described touch screen display the first release prompting and the second release prompting, if what the recognition result of identification engine was related with the first release prompting first presets result and compare and compare when consistent, the display interface of this touch-screen is placed in the first release points out corresponding the first display interface that is in released state; If the recognition result second default result related with the second release prompting compared and compared when consistent, the display interface of this touch-screen is placed in the second release points out corresponding the second display interface that is in application interface; Wherein, the first release prompting is different from the second release prompting.

Wherein, this touch-screen further comprises: the release suggestion device, be used for when touch-screen is in screen lock state, touching screen display release prompting, wherein, describedly comprise that random call release prompting shows showing on touch-screen or call all the time identical release prompting touching screen display release prompting on touch-screen.

The present invention also provides a kind of electronic equipment, it comprises touch-screen, password setting device, pick-up unit, recognition device and tripper, wherein, password setting device is used at least two kinds of unlocking screen levels of confidentiality are set, under different levels of confidentiality, need the corresponding unlocking screen information of input, and the function of application that can use in electronic equipment after release under different levels of confidentiality is also different; Described pick-up unit, the input message that is used for release for detection of in touch-screen optional position input sends to recognition device with the input message that detects, and the consistent result of comparison of recognition device feedback is sent to tripper; Described recognition device is used for calling the identification engine, this input message is identified to obtain recognition result, and recognition result and default result are compared, and comparison result is sent to pick-up unit; Described tripper is used for the consistent result of comparison that receiving detection device sends, and the display interface of this touch-screen is placed in released state; Wherein, described recognition device comprises: the slant correction unit, carry out slant correction to the trace information of handwriting input; Pretreatment unit carries out pre-service to the result after slant correction; The normalization unit carries out normalized to the pre-service result; The characteristic matching unit extracts the characteristic of the trace information after normalized, and carries out characteristic matching and calculate with sample characteristics in default handwritten form Sample Storehouse; The recognition result acquiring unit will calculate the minimum template of distance as the highest template of confidence level, and exports machine-language coding corresponding to this template between the template of the character in characteristic and handwritten form Sample Storehouse; According to the machine-language coding of output, the character that this machine-language coding is corresponding is as recognition result.

Wherein, described touch-screen comprises: the release suggestion device, be used for when touch-screen is in screen lock state, and touching screen display release prompting; Wherein, describedly comprise that random call release prompting shows showing on touch-screen or call all the time identical release prompting touching screen display release prompting on touch-screen.

Unlocking screen method provided by the invention, touch-screen and electronic equipment, by the unlocking screen mode in electronic equipment is arranged different levels of confidentiality, make in the use procedure of electronic equipment, the user can select different levels of confidentiality to carry out release to touch-screen with hobby according to individual's demand.On the one hand, the release difficulty of various levels of confidentiality is different, by selecting level of confidentiality, can satisfy the requirement that facilitates unlock screen, also can satisfy the demand of information security.In addition, due to when the entr screen release information, input be trace information as word, numeral, symbol etc. handwriting input, obtain recognition result, and point out related release answer to compare this recognition result and release, comparison is consistent, get final product release, can effectively avoid maloperation.As seen, unlocking screen technology of the present invention not only can guarantee the information security of electronic equipment, can also effectively avoid occuring because maloperation causes the situation of unlocking screen.Particularly in the situation that High Security Level when touch-screen is in screen lock state, point out without any release; mode that must be by inputting password can release; the intensity of encipherment protection is very high, has strengthened the Information Security of handheld device, has fully effectively protected user's private information.

Description of drawings

Fig. 1 is the principle flow chart of the unlocking screen method based on identifying provided by the invention;

Fig. 2 is the method flow diagram of the first embodiment based on identifying release provided by the invention;

Fig. 3 sets up the method flow diagram of Sample Storehouse in unlocking screen method of the present invention;

Fig. 4 is that in unlocking screen method of the present invention, the identification engine is treated the method flow diagram that identification character is identified;

Fig. 5 treats the process flow diagram that identification character carries out slant correction in unlocking screen method of the present invention;

Fig. 6 is the release prompting of touch-screen screen locking state in unlocking screen method of the present invention;

The to be identified character schematic diagram of Fig. 7 a for tilting, Fig. 7 b is for carrying out the schematic diagram after slant correction to this character to be identified;

Fig. 8 is that the present invention is to the method flow diagram of multiword symbol input message identification release;

Fig. 9 is the release prompting schematic diagram of touch-screen screen locking state of the present invention;

Figure 10 is the release prompting schematic diagram of touch-screen screen locking state of the present invention;

Figure 11 is the theory diagram of touch-screen of the present invention;

Figure 12 is the theory diagram of electronic equipment of the present invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.

Problems based on above-mentioned relevant prior art unlocking screen existence, the ultimate principle of unlocking screen method provided by the invention as shown in Figure 1, comprise the following steps: in step 110, set in advance different unlocking screen levels of confidentiality, in the corresponding unlocking screen information of different level of confidentiality input, screen is carried out release, and the application function that can use in the electronic equipment after release corresponding to different levels of confidentiality is also different.In step 120, in the unlocking screen process, electronic equipment detects and is in the handwriting input trace information of inputting on the touch-screen of screen lock state, and the handwriting input trace information that detects is sent to the identification engine.In step 130, by obtaining the recognition result corresponding with this handwriting input track after the identification of identification engine.In step 140, it is consistent that recognition result and default result are compared, and touch-screen is set to released state.And, the trace information of handwriting input can be that Chinese, English, numeral, symbol etc. have semantic trace information, it can be also the trace information of arbitrary graphic shape, can be the trace information that write the optional position on touch-screen, the stroke input sequence of the character of writing or shape be also unrestricted.

Above-mentioned touch-screen is a kind of screen of realizing input by touch.This touch-screen can be applied to any electronic equipment, and this kind electronic equipment includes but not limited to any equipment with touch input message function such as electronic reader, Hand Personal Computer, hand-held communicating terminal, panel computer, personal digital assistant.

According to the above description, for any touch-screen with touch-input function, when touch-screen is in screen lock state, the user writes by optional position on touch-screen, the handwriting input trace information by identifying the trace information of this input, can make touch-screen be in released state.This kind scheme has effectively overcome on touch-screen the slip release and must slide along set path, and the slip completeness that reaches setting can release drawback, it is extremely convenient to use, and simplifies the operation of user's release when using touch-screen, has fully promoted the good experience degree of intelligent human-machine interaction.

Fig. 2 is the process flow diagram of unlocking screen method one embodiment of the present invention.

With reference to Fig. 2, in step 210, receive the screen locking instruction, make touch-screen be in screen lock state.In this step, when the display interface of touch-screen does not have activation record in setting-up time, or according to user's triggering, send the screen locking instruction by the screen locking module that is stored in the touch-screen memory module, make the display interface of touch-screen enter screen lock state.

Step 220, the information that the input unlock screen needs on touch-screen, the release information of touch-screen sets in advance, and detects the information of inputting.

When touch-screen was in screen lock state, the screen locking module was in running status all the time.The screen locking module is responsible for monitoring the incoming event on touch-screen.When pressing touch event on touch-screen being detected, take this touch point of pressing touch event as starting point, begin to be recorded in the touch point coordinate information of the track of inputting on touch-screen, until the event of lifting detected, i.e. generation stops touch event, take this touch point of lifting event as terminal point.By this kind mode, be recorded in the coordinate information that touches all touch points on the track that produces on touch-screen, complete the detection to input message on touch-screen.

Be explained as an example of inputting digital character on touch-screen " 2 " example, when writing numeral " 2 " on touch-screen, the screen locking module listens to touch event, record the coordinate information of all touch points of input trajectory, obtain the coordinate information of all touch points of numeral 2, complete the detection to input message on touch-screen.

The information of inputting on touch-screen as release answer corresponding to release prompting, can be Chinese text, English words, numeral, symbol, shape and other spoken and written languages arbitrarily.The present invention does not do any restriction, can look hobby by the user fully and arrange arbitrarily.Release built-in in the screen locking module is pointed out, it can be the problem of question-type, as: 1+1=?, 1-1=? or the problem of instruction type, as: capitalization English letter A please be inputted, circle please be drawn, or user-defined problem, as: my local where, etc. the prompting of number of different types.For traditional unlocking screen mode, the user just can normally use terminal according to the corresponding release information of unlocking screen information input.But, for some users, they do not wish that the mobile phone screen of oneself is by release easily, in case see canned data in terminal after others' release, what therefore unlocking pin is arranged is very complicated, in this case, although guaranteed the security of end message, but to oneself using terminal to cause very large inconvenience, in the situation that the frequent terminal of using, it is very consuming time that the each release information that all will input complexity is carried out unlocking screen.

Therefore the present invention is before step 210, also comprise step 200, in step 200, the user is when setting in advance release information, can different levels of confidentiality be set according to individual human needs, the release information that every kind of level of confidentiality need to be inputted is different, and under different levels of confidentiality, the user is also different to deciphering difficulty and the operating right of terminal.

In one embodiment of the invention, the level of confidentiality of electronic equipment is preferably 4 grades, according to from low to high order is respectively:

The first level of confidentiality, this level of confidentiality refer to when touch-screen is in screen by lock status, are touching release prompting of screen display.

When the display interface of the touch-screen of electronic equipment does not have activation record in setting-up time, or according to user's triggering, send the screen locking instruction by the screen locking module that is stored in the touch-screen memory module, make the display interface of touch-screen enter screen lock state, call simultaneously the release information that is pre-stored in the screen locking module and make it showing screen display release prompting.After the user inputted correct release information according to the release prompting, electronic equipment screen was unlocked, and all functions in electronic equipment can both normally be used.

Release prompting can according to personal preference or actual needs arrange fairly simple, more complicated also can be set to get, for example, " 1+1=? ", " your local where? " etc..

The second level of confidentiality, this level of confidentiality refer to when touch-screen is in screen by lock status, are touching the one or more release promptings of screen display.Each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting.

For this situation that shows a plurality of release promptings on display screen, after the release information and release prompting coupling of input, touch-screen is transformed into released state or other application interfaces.When in the screen locking module, a built-in release was pointed out with corresponding release answer, after sending the screen locking instruction, the release prompting namely was presented on touch-screen.Built-in a plurality of release promptings and a plurality of corresponding release answer in the screen locking module, after sending the screen locking instruction, but release prompting random display.Certainly, if need to make at screen lock state and touch at least two release promptings of screen display, with when input message satisfies condition, make touch-screen enter release or corresponding application interface, can make the setting that shows simultaneously at least two release promptings, the related corresponding display interface of each release prompting is as the release related release of a prompting interface, the related application interface of one of application programs such as mailbox, editing short message of checking of another release prompting.At the recognition result that identification engine identification input message obtains, consistent with one of them release answer, this input message of release module responds makes the touch-screen conversion enter the release prompting related display interface corresponding with input message.The release prompting can enter being simultaneously displayed on touch-screen of screen lock state at touch-screen, can be also to make to touch screen display release prompting when starting release.

The 3rd level of confidentiality refers to when touch-screen is in screen by lock status, does not show the release information on screen.The password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen.This password is not limited to numeral, word, figure or combination in any by the User Defined setting.After touch-screen was unlocked, the full detail in electronic equipment can be consulted.

The 4th level of confidentiality refers to when touch-screen is in screen by lock status, does not show the release information on screen.The password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen.this password is by the User Defined setting, be not limited to numeral, word, figure or combination in any, set password can be one or more, and the password that arranges is carried out functional mapping, as the association of setting up password 1 reconciliation screen function, namely input password 1, screen is unlocked, any information in electronic equipment can be consulted, as set up the related of password 2 and address book function, when namely inputting password 2, screen is unlocked, only have address list not consulted, other information can be consulted, as set up password 3 and address book function, the association of calendar information, when namely inputting password 3, screen is unlocked, only have address list and calendar not to be consulted, other information can be consulted.Be only below to describe by way of example, in the password setting up procedure, several passwords be set, and each password corresponding to which function in the release electronic equipment can be set by user's demands of individuals fully.

as seen, in unlocking screen method of the present invention, the user can arrange according to real needs different unlocking screen modes in terminal, if the user does not wish that screen is by release easily, arrange and start the High Security Level mode, the third and fourth level of confidentiality described above, under this level of confidentiality, can not show the release prompting on screen, only the default password of input can unlock screen on screen for the user, the user can preset a plurality of passwords, the function that each password counterpart terminal is different, only can use the basic functions such as calling of terminal such as the password that has, some passwords can be checked the information of the relative privacies such as the address list in terminal.

In the Low Security Level situation, the first and second levels of confidentiality described above in releasing process, are to point out to input the release answer according to the release of screen.The terminal user can select wherein a kind of level of confidentiality and startup according to the demand of oneself, when for example being in, for easy to use, can enable minimum level of confidentiality, for example can be on screen one writing just can release, and outside under artificial situation, prevent lost terminal and cause information leakage, can enable High Security Level, for example in the situation that screen can unlock screen without any the complicated password of release prompting input, even screen is unlocked, can not consult the information such as address list in terminal.The above has only introduced the level of confidentiality set-up mode in the unlocking screen process by way of example, in actual applications, the user can carry out personal settings to High Security Level and Low Security Level fully according to demand, comprising the quantity of level of confidentiality, unlocking manner under every kind of level of confidentiality etc. all can carry out personal settings according to user's demand.Except several unlocking manners above-mentioned, for example, can also one of them level of confidentiality be set to the common different password of slip release input, touch-screen is enabled different functions.

In step 230, call the identification engine, this input message is identified to obtain recognition result.

The screen locking module detects an input process complete after, namely have and press touch event to the process that the event of lifting detected from touch-screen being detected, will call respective function, start the identification engine, the coordinate information of the touch point on the touch motion track of record is sent to the identification engine, identify.The process that Fig. 3 identifies the trace information of the handwriting input to be identified of screen locking module transmission for the identification engine.

In step 301, obtain the trace information of handwriting input, in this step, the handwritten input information that the identification engine obtains is the handwriting input trajectory coordinates information to be identified of screen locking module transmission.

In step 302, the trace information of handwriting input is cut apart.

Be the situation of an above character for the release answer, along with increasing of input person's handwriting, the identification engine just need to be cut apart these characters.Identification engine of the present invention is all to need first to cut apart before slant correction for being identified in of single character or a plurality of characters.Particularly, carrying out piece according to structural informations such as the shape of the track of handwriting input, positions cuts apart, if obvious blank spaces is arranged between the track of handwriting input and be formed with blank gap on the image line vertical projection, the boundary that will cut apart as piece take this blank gap.

If single character only is divided into a block.The identification engine is identified according to following identifying this block, draws corresponding recognition result.If the combination of a plurality of characters, processing procedure comprises the following steps as shown in Figure 8: in step 810, the person's handwriting of a plurality of characters is sampled.In step 820, at first cut apart after sampling, be divided into a plurality of blocks, then process as described in step 303-306, in step 830, each block is carried out slant correction, in step 840, the inclination correction result is carried out pre-service, normalization, feature extraction, coupling calculating etc., obtain the recognition result of each block.In step 850, the recognition result of each block is made up, for example be divided into 3 blocks, be labeled as respectively 1,2,3.Block 1 and block 2 make up to such an extent that be divided into A, block 2 and block 3 make up to such an extent that be divided into B, block 1, block 2 and block 3 make up to such an extent that be divided into C, then these 3 kinds of scores are sorted, take out combination corresponding to the higher score of corresponding confidence level, be the result of identification.No matter be single character or the combination of a plurality of characters, only get identification candidate's first-selection as recognition result.

In step 303, the trace information of the handwriting input of obtaining is carried out slant correction.

The input that the release input of carrying out due to the user is not necessarily carried out according to correct orientation is also not necessarily gone input according to normal sequential write, as: not according to stroke write the sequencing writing Chinese characters, falling to write numeral, etc.These input modes, the person's handwriting that might cause inputting is that inclination, distortion or the angle of input and the positive dirction of touch-screen depart from larger.Especially for input mode more easily is provided to the user, just need to reduce the constraint to user writing attitude, trace information sequential write as far as possible, realize that writing all of arbitrary form can identify, this just need to carry out the correction of input trajectory, is described as slant correction at this.

Fig. 5 is that in unlocking screen method of the present invention, trace information to Real-time Collection is the process flow diagram that character to be identified carries out slant correction.

With reference to Fig. 5, in step 521, determine the first stroke of a Chinese character point of character to be identified, with the fixed point of this first stroke of a Chinese character point as slant correction.Specific to handwritten Kanji recognition, according to the characteristics of hand-written character, the first stroke of a Chinese character of most of characters all on the Chinese character left side, top or limit, upper left, based on these characteristics, first stroke of a Chinese character point that can character is set to the fixed point of slant correction.Therefore, when only needing the memory hand script Chinese input equipment, the position of the first stroke of a Chinese character, can determine this fixed point.In step 522, obtain the direction histogram of this character to be identified.Obtain the method for the direction histogram of this character to be identified, identical with the method for the direction histogram of each sample that obtains same character in step 511.In step 523, ask distance with the direction histogram after cluster in Sample Storehouse, by relatively determining the angle of inclination.With in the direction histogram that obtains and Sample Storehouse the direction histogram template of cluster mate, compare the angle that need to rotate when obtaining slant correction by the mode of calculating distance.In step 524, according to angle of inclination and fixed point, carry out slant correction.Carry out the slant correction of character to be identified according to the angle of inclination that obtains in previous step and the fixed point of determining.

By above-mentioned slant correction, no matter being that tilt, distortion or handstand etc., the handwriting information that gathers has improper situation of writing, can by proofreading and correct, realize the accurate identification to the handwritten form input trajectory.

It is the release prompting schematic diagram of touch-screen screen locking state of the present invention as Fig. 6.The to be identified character schematic diagram of Fig. 7 a for tilting, Fig. 7 b is for carrying out the schematic diagram after slant correction to this character to be identified.

For release prompting 1+1=?, the user can input the release answer corresponding with this release prompting on touch-screen.But, because putting of electronic equipment is more random, cause the user when the release answer of input oneself, the person's handwriting of demonstration may be irregularity for touch-screen, as shown in Figure 7a, the person's handwriting of writing tilts.Identify if this person's handwriting directly is sent to the identification engine, the noise characteristic that extracts can be many, the identification that impact is last.Therefore identifying engine at first can carry out slant correction.In the process for the treatment of the identification character sampling, the fixed point of character is determined, as the stain that marks emphatically in Fig. 7 b.Then with the template matches of the direction histogram of cluster in the direction histogram of character to be identified and template base, draw the angle of inclination that needs, according to the result of fixed point and angle of inclination correction as shown in Figure 7b.Certainly, the result of this correction just directly enters step 304 as the result of a centre and carries out pre-service.

In step 304, the trace information of handwriting input is carried out pre-service.In the trace information of handwriting input, because the input data are to move the touch point track of formation when contacting with touch-screen, and hardware device inevitably can be introduced noise when image data, therefore, when being identified, the trace information of handwriting input need to carry out pre-service to raw data, to eliminate the noise that exists in original input data.Pre-service mainly comprises removes isolated point, removes redundant points, smoothly eliminates the process such as burr, and these technology belong to known technology for the technician of area of pattern recognition, do not repeat them here.

In step 305, the pre-service result is carried out normalized.

Treat identification character and carry out entering step 305 after pre-service and carry out normalized, can adopt normalization based on center of gravity for alphabetic character, and some character is elongated especially or flat, has done special processing for these character script.At first calculate the ratio of width to height r of character in person's handwriting, and the ratio of width to height is determined a threshold value T, if r＜T think that person's handwriting is elongated character; Otherwise be non-elongated character.For an elongated character normalization Y coordinate, the suitable normalization of X coordinate is moved to the centre position of horizontal direction.Processing mode and elongated character processing mode to flat character are similar.

In step 306, extract the characteristic of the trace information of the handwriting input after normalized, and carry out characteristic matching with the sample characteristics of described handwritten form Sample Storehouse and calculate.

Pre-service and normalization step are carried out the extraction of feature after completing for the trace information of handwriting input, comprise that mainly direction character, geometric properties, edge feature etc. can demonstrate fully the feature of each character information amount.No matter be word class, symbol class or graphics class, each character has the specific characteristic information of oneself.Then the feature of each template of storing in these features and Sample Storehouse is compared, the gap between each feature is accumulated, obtain an accumulation score, this score is the identification score of the current candidate characters of identification.Identification score less represent the track of handwriting input and the gap between this candidate template less, namely similarity is higher, confidence level is higher.

In addition, for improving the accuracy of the first-selection of identifying the candidate, realize disposable release, can proofread and correct the identification candidate according to the release prompting.The release prompting of storing in the screen locking module is sorted out according to characters such as numeral, letter, words, therefore, can make up by identification candidate and release prompting judgement identification candidate's accuracy.Particularly, the identification candidate to given number gives a mark with the combination between the release prompting by the language model set up, and the identification candidate that score is the highest is as first-selection, and should first-selection as recognition result, so as to the accuracy of raising recognition result.According to identification candidate's combination score, to choose the higher identification candidate of several combination scores and release prompting and make up, identification candidate's number is no less than two.Can certainly proofread and correct recognition result in conjunction with language prioris such as the meaning of a word, word frequency and common rule.

To sum up, the identification engine is configured to identify the combination in any of one of the character trace information, symbol trace information, shape trace information of input or character trace information, symbol trace information, shape trace information.

The identification engine will be completed the identification of trace information, at first need to set up the handwritten form Sample Storehouse, this Sample Storehouse is carried out training study obtain sample characteristics, and sample characteristics is trained for the template of character, be the corresponding machine-language coding of the template-setup of each character, as the Unicode coding, the Unicode of " book " is encoded to 0x4E66 for another example.When the trace information of handwriting input to be identified is identified, characteristic information and the sample characteristics coupling of the track of handwriting input to be identified are calculated, determine recognition result according to matching score.The detailed process of determining recognition result according to matching score is, to calculate the minimum template of distance between the template of the character in characteristic and handwritten form Sample Storehouse as the highest template of confidence level, and export machine-language coding corresponding to this template, according to the machine-language coding of output, the character that this machine-language coding is corresponding is as recognition result.

Fig. 4 sets up the process of handwritten form Sample Storehouse for the identification engine.As shown in Figure 4, set up Sample Storehouse and comprise the steps: step 411: the direction histogram that obtains each sample of same character.Each sample to same character is got direction histogram.Concrete operation is exactly sample is sampled according to the certain hour interval, and every two sampled points are carried out line, obtains this line segment with respect to angle and the record of horizontal positive dirction.So just can obtain the direction histogram of each sample in Sample Storehouse.Step 412: the direction histogram to each character is got average, obtains the average direction histogram of each character.Step 413: based on mean distance, all direction histograms are carried out cluster, obtain a plurality of direction histogram masterplates as cluster centre, and as Sample Storehouse.

In order to improve the efficient of whole identification, the direction histogram of each character in Sample Storehouse is carried out cluster.Because direction histogram is more, can not be artificial judge can cluster what, the quantity of calculation in namely can't hard clustering, and be dynamic based on the cluster centre number of the hierarchical clustering method of mean distance, in the time of can avoiding cluster centre quantity very few, the quantity of information compression is too much, cause the loss of information, in the time of also can avoiding cluster centre quantity too much, the quantity of information compression causes the redundancy of information not.

By above operation, preserve the direction histogram template that cluster obtains, with the sample template as follow-up coupling.

Continuation, is compared recognition result and default result in step 240 with reference to Fig. 2, if comparison result is consistent, the display interface of this touch-screen is placed in released state.

Be built-in with release prompting and corresponding release answer in the screen locking module, this release answer is default result.Identify engine with recognition result and should default result compare, compare when consistent, the identification engine will be compared consistent result and send to the screen locking module, the screen locking module will be compared consistent information again and send to the solution lock module, and the solution lock module calls corresponding unlock command makes the display interface of touch-screen be in released state.

When touch-screen is in screen lock state, touching the release prompting of screen display, can be according at least two release promptings of demonstration are set, the related corresponding display interface of each release prompting, as release related release of prompting interface, the related application interface of one of application programs such as mailbox, editing short message of checking of another release prompting.At the recognition result that identification engine identification input message obtains, consistent with one of them release answer, this input message of release module responds makes the touch-screen conversion enter the release prompting related display interface corresponding with input message, as shown in Figure 9.Described recognition result can be the combination in any of one of character, symbol, shape or character, symbol, shape.

Situation for there is no the release prompting on screen is built-in with unlocking pin in the screen locking module.The identification engine is identified the unlocking pin of user's input, recognition result and the unlocking pin of presetting are compared, compare when consistent, the identification engine will be compared consistent result and send to the screen locking module, the screen locking module will be compared consistent information again and send to the solution lock module, and the solution lock module calls corresponding unlock command makes the display interface of touch-screen be in released state.

In the embodiment of the unlocking screen method of the present invention of describing in the above, the identification engine is configured to identify handwritten form.

In another embodiment of unlocking screen method of the present invention, the identification engine can be configured to recognition coding information, as shown in figure 10.When touch-screen is in screen lock state, touch screen display release prompting, show simultaneously the soft keyboard that is used for input message.According to release prompting, input the release answer by soft keyboard, after the identification of identification engine, recognition result and the default result of acquisition are compared, compare unanimously, make touch-screen be transformed into released state.Soft keyboard can be arranged voluntarily by the user, can be set to the soft keyboard of standard, also can only be set to as required the combination of numeric keypad, QWERTY keyboard or numeric keypad and QWERTY keyboard.

The present invention also provides a kind of touch-screen, theory diagram as shown in figure 11, this touch-screen comprises password setting device, pick-up unit, recognition device and tripper, and according to the height of password setting device degree of establishment, this touch-screen also comprises the release suggestion device.

The release suggestion device is used for when touch-screen is in screen lock state, is touching screen display release prompting; Wherein, comprise that random call release prompting shows showing on touch-screen or call all the time identical release prompting touching screen display release prompting on touch-screen, also can be according to being arranged on the release prompting that touches at least two different display interfaces of association of screen display.

Password setting device is used for setting in advance password, with the password solution screen that sets in advance in the input of the optional position of touch-screen, also be used for arranging the level of confidentiality of unlocking screen, the release level of confidentiality that different release information is corresponding different, level of confidentiality can be divided into the first level of confidentiality and the second level of confidentiality.The first level of confidentiality can be High Security Level, for example is defined as not showing the release information on screen when touch-screen is in screen by lock status.The password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen.This password is not limited to numeral, word, figure or combination in any by the User Defined setting.And the password that arranges is carried out functional mapping, and as set up the association that password 1 is conciliate screen function, set up the related of password 2 and entry communication recording function, by that analogy, setting voluntarily as required.The user also can be to the further refinement level of confidentiality of this High Security Level, for example can only separate screen and use the level of confidentiality of call function to be set to the first level of confidentiality, can separate screen, use the level of confidentiality of call function and address book function to be set to the second level of confidentiality, and can use the level of confidentiality of mobile phone all functions to be set to the 3rd level of confidentiality after the solution screen.Need to arrange several levels of confidentiality in the High Security Level situation, and corresponding which function of mobile phone of each level of confidentiality can be arranged as required by the user.

The second level of confidentiality can be Low Security Level, for example is defined as when touch-screen is in screen by lock status, is touching screen display release prompting.But the Low Security Level Further Division is a plurality of levels of confidentiality, can divide according to the complexity of release, divides each level of confidentiality under Low Security Level below by the mode of giving an example.For example, the first level of confidentiality for example shows at least two release promptings for needing complicated release on screen.The second level of confidentiality is to show a release prompting on screen, but release answer more complicated.The 3rd level of confidentiality is to show a release prompting on screen, and the release answer is fairly simple.Each level of confidentiality that arranges under Low Security Level, the quantity of level of confidentiality and complexity can arrange according to user's demand.Pick-up unit, the input message that is used for release for detection of on touch-screen sends to recognition device with the input message that detects.This pick-up unit is a kind of screen locking device.When touch-screen was in screen lock state, this screen locking device was in mode of operation, the incoming event on the real-time listening touch-screen.When pressing touch event on touch-screen being detected, take this touch point of pressing touch event as starting point, begin to be recorded in the coordinate information of the track of inputting on touch-screen, until the event of lifting detected, i.e. generation stops touch event, take this touch point of lifting event as terminal point.By this kind mode, be recorded in and touch the coordinate information of having a few on the track that produces on touch-screen, complete the detection to input message on touch-screen.This pick-up unit is specially the screen locking module.Pick-up unit sends the input message that detects to recognition device, and the recognition result of recognition device feedback is sent to tripper.

Recognition device is used for calling the identification engine, this input message is identified the acquisition recognition result, and recognition result and default result are compared, and comparison result is sent to pick-up unit.This identification engine is configured to identify the combination in any of one of character trace information, symbol trace information, shape trace information of input or character trace information, symbol trace information, shape trace information; Or described identification engine is configured to identify the coded message of input.

Tripper is used for the consistent result of comparison that receiving detection device sends, and the display interface of this touch-screen is placed in released state.

Described recognition device also comprises cutting unit, slant correction unit, pretreatment unit, normalized unit, characteristic matching unit and recognition result acquiring unit.The function of unit and above-mentioned steps 30 parts are described basic identical, do not repeat them here.

The invention allows for a kind of electronic equipment, as shown in figure 12, this electronic equipment comprises: touch-screen; The release suggestion device, be used for when touch-screen is in screen lock state, touching screen display release prompting, wherein, describedly comprise that random call release prompting is showing on touch-screen or calling all the time that identical release prompting shows or show the release prompting according to the mode of user preset on touch-screen touching screen display release prompting; Password setting device is used for setting in advance password, with the password solution screen that sets in advance in the input of the optional position of touch-screen, also be used for arranging simultaneously the level of confidentiality of unlocking screen, the release level of confidentiality that different release information is corresponding different, level of confidentiality can be divided into High Security Level and Low Security Level, the height of level of confidentiality is set according to password setting device, and this touch-screen can not comprise the release suggestion device; Pick-up unit, the input message that is used for release for detection of on touch-screen sends to recognition device with the input message that detects; Pick-up unit sends the input message that detects to recognition device, and the testing result of recognition device feedback is sent to tripper; Recognition device is used for calling the identification engine, this input message is identified to obtain recognition result, and recognition result and default result are compared, and comparison result is sent to pick-up unit; Tripper is used for the consistent result of comparison that receiving detection device sends, and the display interface of this touch-screen is placed in released state.

Above-mentioned release suggestion device can be made the setting that shows simultaneously at least two release promptings, makes to touch at least two release promptings of screen display, with when input message satisfies condition, makes touch-screen enter release or corresponding application interface.

Above-mentioned recognition device also comprises cutting unit, slant correction unit, pretreatment unit, normalized unit, characteristic matching unit and recognition result acquiring unit.The function of unit and above-mentioned steps 30 parts are described basic identical, do not repeat them here.

One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to complete by the hardware that computer program instructions is correlated with, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.

Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a unlocking screen method, is characterized in that, comprising:

At least two kinds of unlocking screen levels of confidentiality are set, in different levels of confidentiality, need the corresponding unlocking screen information of input;

Enable wherein a kind of unlocking screen level of confidentiality;

Detection is in the input message that is used for release of touch-screen optional position input;

Call the identification engine, this input message is identified to obtain recognition result;

Recognition result and default result are compared, if comparison is consistent, the display interface of this touch-screen is placed in released state.

2. method according to claim 1, is characterized in that, described level of confidentiality comprises High Security Level and Low Security Level, and at High Security Level, screen does not show the release prompting, at Low Security Level, and screen display release prompting.

3. method according to claim 2, is characterized in that, described Low Security Level further comprises: the first level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching release prompting of screen display, when input was pointed out corresponding release information with release, screen was unlocked; The second level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching the one or more release promptings of screen display, each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting, the related corresponding display interface of each release prompting, when the input message on screen was consistent with one of them release answer, touch-screen entered the release prompting related display interface corresponding with input message.

4. method according to claim 3, it is characterized in that, described High Security Level further comprises: the 3rd level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, a password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen; The 4th level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, the password that sets in advance in the input of touch-screen optional position, as the release information of touch-screen, set password is one or more, and the password that arranges is carried out functional mapping, input different passwords, touch-screen is enabled different functions.

5. a touch-screen, is characterized in that, it comprises:

Password setting device is used at least two kinds of unlocking screen levels of confidentiality are set, and in different levels of confidentiality, needs the corresponding unlocking screen information of input, also is used for setting in advance password as the release information of touch-screen;

Described pick-up unit, the input message that is used for release for detection of in touch-screen optional position input sends to recognition device with the input message that detects, and the consistent result of comparison of recognition device feedback is sent to tripper;

Described recognition device is used for calling the identification engine, this input message is identified to obtain recognition result, and recognition result and default result are compared, and comparison result is sent to pick-up unit;

Described tripper is used for the consistent result of comparison that receiving detection device sends, and the display interface of this touch-screen is placed in released state; Wherein,

Described recognition device comprises:

The slant correction unit carries out slant correction to the trace information of handwriting input;

Pretreatment unit carries out pre-service to the result of slant correction;

The normalization unit carries out normalized to the pre-service result;

The characteristic matching unit extracts the characteristic of the trace information after normalized, and carries out characteristic matching and calculate with sample characteristics in default handwritten form Sample Storehouse;

The recognition result acquiring unit will calculate the minimum template of distance as the highest template of confidence level, and exports machine-language coding corresponding to this template between the template of the character in characteristic and handwritten form Sample Storehouse;

According to the machine-language coding of output, the character that this machine-language coding is corresponding is as recognition result.

6. touch-screen according to claim 5, is characterized in that, described level of confidentiality comprises High Security Level and Low Security Level, and at High Security Level, screen does not show the release prompting, at Low Security Level, and screen display release prompting.

7. touch-screen according to claim 6, is characterized in that, described Low Security Level further comprises: the first level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching release prompting of screen display, when input was pointed out corresponding release information with release, screen was unlocked; The second level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching the one or more release promptings of screen display, each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting, the related corresponding display interface of each release prompting, when the input message on screen was consistent with one of them release answer, touch-screen entered the release prompting related display interface corresponding with input message; Described High Security Level further comprises: the 3rd level of confidentiality, refer to when touch-screen is in screen by lock status, and do not show the release information on screen, a password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen; The 4th level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, the password that sets in advance in the input of touch-screen optional position, as the release information of touch-screen, set password is one or more, and the password that arranges is carried out functional mapping, when the input password not simultaneously, the function that is activated in electronic equipment is also different.

8. an electronic equipment, is characterized in that, comprises touch-screen, password setting device, pick-up unit, recognition device and tripper, wherein,

Described password setting device is used at least two kinds of unlocking screen levels of confidentiality are set, and under different levels of confidentiality, needs the corresponding unlocking screen information of input, also is used for setting in advance password as the release information of touch-screen;

Described recognition device comprises:

Pretreatment unit carries out pre-service to the result after slant correction;

The normalization unit carries out normalized to the pre-service result;

9. electronic equipment according to claim 8, is characterized in that, described level of confidentiality comprises High Security Level and Low Security Level, and at High Security Level, screen does not show the release prompting, at Low Security Level, and screen display release prompting.

10. electronic equipment according to claim 9, it is characterized in that, described Low Security Level further comprises: the first level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching release prompting of screen display, when input was pointed out corresponding release information with release, screen was unlocked; The second level of confidentiality, this level of confidentiality refers to when touch-screen is in screen by lock status, touching the one or more release promptings of screen display, each release prompting is set in advance by the user, and functional mapping is carried out in each release prompting, the related corresponding display interface of each release prompting, when the input message on screen was consistent with one of them release answer, touch-screen entered the release prompting related display interface corresponding with input message; Described High Security Level further comprises: the 3rd level of confidentiality, refer to when touch-screen is in screen by lock status, and do not show the release information on screen, a password that sets in advance in the input of touch-screen optional position is as the release information of touch-screen; The 4th level of confidentiality, refer to when touch-screen is in screen by lock status, do not show the release information on screen, the password that sets in advance in the input of touch-screen optional position, as the release information of touch-screen, set password is one or more, and the password that arranges is carried out functional mapping, when the input password not simultaneously, the function that is activated in electronic equipment is also different.