CN107295195B - A kind of fingerprint identification method and mobile terminal - Google Patents

A kind of fingerprint identification method and mobile terminal Download PDF

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Publication number
CN107295195B
CN107295195B CN201710600379.3A CN201710600379A CN107295195B CN 107295195 B CN107295195 B CN 107295195B CN 201710600379 A CN201710600379 A CN 201710600379A CN 107295195 B CN107295195 B CN 107295195B
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China
Prior art keywords
backlight
brightness value
fingerprint
normal
mobile terminal
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CN201710600379.3A
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Chinese (zh)
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CN107295195A (en
Inventor
柯力
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维沃移动通信有限公司
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Priority to CN201710600379.3A priority Critical patent/CN107295195B/en
Publication of CN107295195A publication Critical patent/CN107295195A/en
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Publication of CN107295195B publication Critical patent/CN107295195B/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/72Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
    • H04M1/725Cordless telephones
    • H04M1/72519Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status
    • H04M1/72563Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status with means for adapting by the user the functionality or the communication capability of the terminal under specific circumstances
    • H04M1/72569Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status with means for adapting by the user the functionality or the communication capability of the terminal under specific circumstances according to context or environment related information
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00006Acquiring or recognising fingerprints or palmprints
    • G06K9/00013Image acquisition
    • G06K9/0004Image acquisition by using electro-optical elements or layers, e.g. electroluminescent sensing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/02Constructional features of telephone sets
    • H04M1/22Illuminating; Arrangements for improving visibility of characters on dials

Abstract

The embodiment of the invention discloses a kind of fingerprint identification method and mobile terminals.The mobile terminal includes display screen, display screen includes underlay substrate, the mobile terminal further includes photosensitive sensor and fingerprint sensor, photosensitive sensor is located in the black matrix of display screen, fingerprint sensor is located on the underlay substrate of display screen, which comprises the current brightness value of the light through user's finger reflection in detection photosensitive sensor fingerprint induction zone collected;According to the first present intensity value and pre-stored normal brightness value detected, the display brightness of mobile terminal is adjusted;If detecting, the second present intensity value is matched with normal brightness value, it then controls fingerprint sensor and acquires the first finger print information, first finger print information is matched with the second finger print information of preparatory typing, obtain fingerprint recognition result, display brightness when current display brightness due to having adjusted mobile terminal when carrying out fingerprint recognition is recorded with fingerprint matches, and improves fingerprint recognition rate.

Description

A kind of fingerprint identification method and mobile terminal

Technical field

The present invention relates to field of communication technology more particularly to a kind of fingerprint identification methods and mobile terminal.

Background technique

In recent years, fingerprint identification technology was used widely as a kind of identity identifying technology based on biological characteristic, such as Applied to smart phone, entrance guard recognition device, attendance checking system etc..Photoelectricity screen fingerprint identification technology is developed and applies at present, The technology is by the way that by fingerprint sensor setting, at screen rear, the light that screen issues can reflex to fingerprint after being irradiated to finger Sensor, so that fingerprint sensor be made to determine the finger print information of user according to the reflection light of acquisition.

Although photoelectricity screen fingerprint identification technology realizes fingerprint recognition, since the technology needs to issue by screen Light reflect the finger print information of user, therefore collected fingerprint image is different under different screen brightness.At end When end carries out fingerprint recognition, based on screen intensity, different, the brightness influence of terminal local environment and terminal show the shadow of content Ring etc., so that there are larger differences for the currently detected fingerprint image quality of fingerprint sensor and the fingerprint image quality prerecorded Not, to influence the discrimination of fingerprint.

It is main at present to use screen intensity tune in fingerprint recognition in order to reduce influence of the screen intensity to fingerprint recognition Section to most bright method is handled, but since different terminals have different maximum display brightness, uses existing side Method carries out the regulating effect disunity of brightness regulation, and will increase power consumption of terminal, and display screen, which is frequently in maximum brightness, to be increased Add terminal part to be lost, reduces the service life of terminal.

Summary of the invention

The present invention provides a kind of fingerprint identification methods, existing in the prior art since different terminals have not to solve Same maximum display brightness, therefore using the adjustment effect disunity of existing method progress brightness adjustment, and will increase terminal The problem of power consumption, display screen, which is frequently in maximum brightness, will increase terminal part loss, reduce the service life of terminal.

In a first aspect, providing a kind of fingerprint identification method, it is applied to mobile terminal, the mobile terminal includes display Screen, the display screen includes underlay substrate, which is characterized in that the mobile terminal further includes photosensitive sensor and fingerprint sensing Device, the photosensitive sensor are located in the black matrix of display screen, and the fingerprint sensor is located at the underlay substrate of the display screen On, which comprises

Detect the current bright of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected Angle value;

According to the first present intensity value and pre-stored normal brightness value detected, the aobvious of the mobile terminal is adjusted Show brightness;

If detecting, the second present intensity value is matched with the normal brightness value, is controlled fingerprint sensor acquisition first and is referred to Line information;

First finger print information is matched with the second finger print information of preparatory typing, obtains fingerprint recognition result;

Wherein, the normal brightness value are as follows: described in typing when the second finger print information, the photosensitive sensor is acquired described The current brightness value of light through user's finger reflection in fingerprint induction zone.

Second aspect provides a kind of mobile terminal, including display screen, and the display screen includes underlay substrate, the shifting Dynamic terminal further includes photosensitive sensor and fingerprint sensor, and the photosensitive sensor is located in the black matrix of display screen, the finger Line sensor is located on the underlay substrate of the display screen, the mobile terminal further include:

Brightness value detection module, it is anti-through user's finger in photosensitive sensor fingerprint induction zone collected for detecting The current brightness value for the light penetrated;

Display brightness adjusts module, for according to the first present intensity value and pre-stored normal brightness detected Value, adjusts the display brightness of the mobile terminal;

First finger print information acquisition module, if for detecting that the second present intensity value is matched with the normal brightness value, It then controls fingerprint sensor and acquires the first finger print information;

A finger print information matching module, for carrying out the second finger print information of first finger print information and preparatory typing Match, obtains fingerprint recognition result;Wherein, the normal brightness value are as follows: described in typing when the second finger print information, the light sensor The current brightness value of light through user's finger reflection in the fingerprint induction zone of device acquisition.

The third aspect, provides a kind of mobile terminal, including processor, memory and is stored on the memory and can The computer program run on the processor, the computer program realize above-mentioned fingerprint when being executed by the processor The step of recognition methods.

In this way, when carrying out fingerprint recognition, detecting photosensitive sensor fingerprint induction zone collected in the embodiment of the present invention First brightness value of the interior light through user's finger reflection, later according to the normal brightness value stored when recording user fingerprints information With the first brightness value of current detection, the display brightness of mobile terminal is adjusted, so that the current display brightness of mobile terminal and finger Display brightness matching when line is recorded, to improve fingerprint recognition rate.Screen intensity is adjusted to most in fingerprint recognition Bright existing method is compared, since screen intensity when screen intensity need to be only adjusted to by this method to be recorded with fingerprint matches, nothing Screen need to be adjusted to most bright, therefore reduce power consumption of terminal, terminal loss is slowed down, extend the service life of terminal.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is one of the flow chart of fingerprint identification method provided in an embodiment of the present invention;

Fig. 2 is the two of the flow chart of fingerprint identification method provided in an embodiment of the present invention;

Fig. 3 is the schematic diagram of the display screen of mobile terminal provided in an embodiment of the present invention;

Fig. 4 is one of the block diagram of mobile terminal provided in an embodiment of the present invention;

Fig. 5 is the two of the block diagram of mobile terminal provided in an embodiment of the present invention;

Fig. 6 is the three of the block diagram of mobile terminal provided in an embodiment of the present invention;

Fig. 7 is the four of the block diagram of mobile terminal provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

Fig. 1 is one of the flow chart of fingerprint identification method provided in an embodiment of the present invention.Fingerprint identification method shown in FIG. 1 Applied to mobile terminal, the mobile terminal includes display screen, and the display screen includes underlay substrate, and the mobile terminal also wraps Photosensitive sensor and fingerprint sensor are included, the fingerprint identification method includes:

The light through user's finger reflection is current in step 101, detection photosensitive sensor fingerprint induction zone collected Brightness value.

In the embodiment of the present invention, mobile terminal can be diversified forms, such as mobile phone, plate, notebook.

Mobile terminal includes display screen, and display screen includes underlay substrate, and mobile terminal is built-in with photosensitive sensor and fingerprint Sensor.It is provided with fingerprint induction zone on the display screen of mobile terminal, the position of fingerprint induction zone can be according to actually being set It sets, is located at the Home key position of mobile phone such as fingerprint induction zone, photosensitive sensor is for detecting in fingerprint induction zone through user hand The brightness value of the light of digital reflex, fingerprint sensor are used to acquire the finger print information in fingerprint induction zone.Fingerprint sensor is used for The finger print information for detecting user in fingerprint induction zone, in photoelectricity fingerprint identification technology, fingerprint sensor acquires fingerprint induction zone The light reflected in domain through user's finger, determines finger print information according to reflection light, carries out fingerprint recognition for system.

Difference based on display technology, it is (organic that mobile terminal can distinguish LCD (liquid crystal display) mobile terminal, OLED Light emitting diode) mobile terminal etc..Position setting can be carried out to photosensitive sensor and fingerprint sensor according to reality, it is such as photosensitive Sensor can be set in the black matrix of display screen, that is, be arranged on the glue-line between tri- pixels of RGB of display screen;Fingerprint Sensor can be set on the underlay substrate of display screen, and specifically, for LCD display, photosensitive sensor be can be set Side of the underlay substrate such as glass substrate towards backlight;For OLED display screen, photosensitive sensor be can be set in substrate base Side of the backboard from organic luminous layer.Preferably, photosensitive sensor can be arranged from the closer position of fingerprint sensor, with Just photosensitive sensor relatively accurately detects the brightness value around fingerprint sensor.

Setting based on fingerprint sensor can be used for unlocking screen, branch so that mobile terminal has fingerprint identification function It pays and waits operation, user can place a finger on fingerprint collecting region, obtain finger print information for fingerprint sensor, complete fingerprint collecting And recording, when subsequent user carries out the operation such as unlocking screen, payment using fingerprint, it is current that mobile terminal can compare fingerprint sensor Whether the finger print information of detection matches with the finger print information prerecorded, if it does, then executing corresponding operating.

For the accuracy for improving fingerprint recognition rate, improving fingerprint recognition, mobile terminal described in the embodiment of the present invention into When row user fingerprints are recorded, while acquiring the finger print information of user using fingerprint sensor, referred to using photosensitive sensor acquisition The current brightness value of light through user's finger reflection in line induction zone, and it is bright that the collected brightness value is recorded as standard Angle value.

When carrying out fingerprint recognition operation, will use in photosensitive sensor acquisition fingerprint induction zone through user's finger reflection The current brightness value of light, and compare the normal brightness value recorded when prerecording user fingerprints information and currently detected Brightness value the brightness of display screen is adjusted according to comparison result so that the brightness and use of display screen when fingerprint detection The brightness of display screen when family fingerprint is recorded is identical, to improve the accuracy of fingerprint recognition.

Based on above-mentioned purpose, this step is monitored the acquisition behavior of photosensitive sensor, if photosensitive sensor acquires The current brightness value for having arrived the light through user's finger reflection in fingerprint induction zone, then it is collected bright to detect photosensitive sensor Angle value.

The the first present intensity value and pre-stored normal brightness value that step 102, basis detect, adjust mobile terminal Display brightness.

Detect the first current bright of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected After angle value, pre-stored normal brightness value is extracted from designated storage location, and more currently detected first is current The size of brightness value and normal brightness value is adjusted the display brightness of mobile terminal according to comparison result, so that fingerprint is known The display brightness of mobile terminal matches when the display brightness of mobile terminal records finger print information with user when other, to improve fingerprint Discrimination.

If the first present intensity value detected is less than pre-stored normal brightness value, mobile terminal can be improved Display brightness, can specifically improve the display brightness of mobile terminal in several ways, such as increase mobile terminal LCD show The backlight level of the backlight of screen, the display image for replacing different grayscale increase the control electric current of OLED display screen to have improved The light emission luminance etc. of machine luminescent layer;If the first present intensity value detected is greater than pre-stored normal brightness value, can To reduce the display brightness of mobile terminal, the backlight level, more of the backlight of the LCD display of mobile terminal specifically can reduce It changes the display image of different grayscale, reduce the control electric current of OLED display screen with light emission luminance for reducing organic luminous layer etc., from And complete the adjusting of the display brightness of mobile terminal.

If step 103 detects that the second present intensity value is matched with normal brightness value, fingerprint sensor acquisition the is controlled One finger print information.

It, can be in the display of primary mobile terminal adjusted after completing the primary adjustment to the display brightness of mobile terminal Under brightness, the current brightness of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected is detected again Value completes the brightness adjustment work of mobile terminal if the brightness value detected again is matched with normal brightness value;If The brightness value and normal brightness value detected again mismatches, then carries out secondary adjustment to the display brightness of mobile terminal, later Detect photosensitive sensor brightness value collected again, and judge the brightness value that detects again and normal brightness value whether Match, after repeatedly adjusting, if detecting that the second present intensity value of photosensitive sensor acquisition is matched with normal brightness value, Complete the adjustment operation of the display brightness of mobile terminal.

After the display brightness adjustment of mobile terminal, judgement reuses the brightness value that photosensitive sensor acquires and standard is bright The step of whether angle value matches can be accomplished in several ways, and e.g., judgement reuses the brightness value of photosensitive sensor acquisition It is whether identical as normal brightness value, or, judgement reuses the brightness value of photosensitive sensor acquisition and the difference of normal brightness value Whether preset range of luminance values is met, and specific judgment mode can be according to being actually configured.

After detecting that the second present intensity value is matched with normal brightness value, in the display brightness adjusted of mobile terminal Under, control fingerprint sensor acquires the first finger print information.

Step 104 matches the first finger print information with the second finger print information of preparatory typing, obtains fingerprint recognition knot Fruit.

The finger print information of the user recorded when the embodiment of the present invention records user fingerprints is known as the second finger print information, will record The current brightness of light through user's finger reflection in the fingerprint induction zone that photosensitive sensor acquires when making the second finger print information Value is known as normal brightness value.

After control fingerprint sensor collects the first finger print information, the second fingerprint letter of the user prerecorded is extracted Breath, and the first finger print information is matched with the second finger print information, if the two is identical, determine current progress fingerprint recognition User be in advance carry out fingerprint recording when user, fingerprint recognition success, subsequent operation can be executed, as unlocking screen, The operations such as program execution;If the two mismatches, determine that the current user for carrying out fingerprint recognition is not to carry out fingerprint record in advance User when processed, fingerprint recognition failure, can pop up the prompt information about fingerprint recognition failure on a display screen, inform and use Family.

The display brightness of mobile terminal is adjusted to and fingerprint by the method for the embodiment of the present invention when carrying out fingerprint recognition Display brightness matching when recording, to substantially increase the discrimination of fingerprint, improves the accuracy of fingerprint recognition.Due to this The display brightness that the display brightness of mobile terminal need to be only adjusted to when recording with fingerprint by method matches, without as background technique institute The existing method stated adjusts the display brightness of mobile terminal to maximum, therefore reduces power consumption of terminal, slows down terminal loss, prolongs The service life of terminal is grown.

According to an embodiment of the present invention, it when carrying out fingerprint recognition, detects in photosensitive sensor fingerprint induction zone collected The current brightness value of light through user's finger reflection refers to according to the first present intensity value detected with user is recorded later The normal brightness value stored when line information, adjusts the display brightness of mobile terminal so that the current display brightness of mobile terminal with Display brightness matching when fingerprint is recorded, to improve fingerprint recognition rate, improves the accuracy of fingerprint recognition.With in fingerprint The display brightness of mobile terminal is adjusted to maximum existing method when identification to compare, since this method only need to be by mobile terminal The display brightness that display brightness is adjusted to when recording with fingerprint matches, and without adjusting display brightness to maximum, therefore reduces end Power consumption is held, terminal loss is slowed down, extends the service life of terminal.

Fig. 2 is the two of the flow chart of fingerprint identification method provided in an embodiment of the present invention.Fingerprint identification method shown in Fig. 2 Applied to mobile terminal, the mobile terminal includes display screen, and the display screen includes underlay substrate, and the mobile terminal also wraps Photosensitive sensor and fingerprint sensor are included, the fingerprint identification method includes:

Step 201, the second finger print information for obtaining fingerprint sensor acquisition obtain photosensitive biography when the second finger print information of acquisition The current brightness value of the light for handling digital reflex in sensor fingerprint induction zone collected, and it is stored as normal brightness value.

The embodiment of the present invention is in order to improve the accuracy of fingerprint recognition, when carrying out fingerprint recognition operation, to mobile terminal Display brightness be adjusted so that when the display brightness of mobile terminal and fingerprint are recorded when fingerprint recognition mobile terminal display Brightness matching, to improve fingerprint recognition rate and accuracy.

In order to realize the above functions, mobile terminal provided in an embodiment of the present invention is equipped with photosensitive sensor and fingerprint sensing Device, photosensitive sensor are located in the black matrix of display screen, for acquiring working as the light for handling digital reflex in fingerprint induction zone Preceding brightness value;Fingerprint sensor is located on the underlay substrate of display screen, for obtaining the finger print information of user.In photoelectricity fingerprint In identification technology, fingerprint sensor acquires the light reflected in fingerprint induction region through user's finger, is determined according to reflection light Finger print information.

When carrying out user fingerprints recording, mobile terminal enables photosensitive sensor and fingerprint sensor, obtains fingerprint sensor The finger print information of acquisition is second finger print information, while being obtained in photosensitive sensor fingerprint induction zone collected Handle the current brightness value of the light of digital reflex, the brightness value that will acquire is known as normal brightness value, and store fingerprint record when The second finger print information and normal brightness value obtained.

Described obtain handles digital reflex in photosensitive sensor fingerprint induction zone collected when acquiring the second finger print information Light current brightness value, and the step of being stored as normal brightness value can be accomplished in several ways, specifically such as: first First, photosensitive sensor in the preset duration during acquiring the second finger print information is obtained to incude according to the fingerprint that predeterminated frequency acquires At least one initial luma values of the light for handling digital reflex in area;Secondly, calculating being averaged at least one initial luma values Value;Finally, average value is determined as normal brightness value and is stored.

The average value of at least one initial luma values detected in preset duration as normal brightness value and is stored, is kept away The excessive lightness or darkness initial luma values that will sometime detect are exempted from as generation the case where normal brightness value, have improved The accuracy of fingerprint identification method.

In practice, except at least one initial luma values for acquiring photosensitive sensor in preset duration according to predeterminated frequency Average value as normal brightness value outside, at least one initial luma values can also be calculated by other appropriate algorithms, will Acquired results are as normal brightness value.

The light through user's finger reflection is current in step 202, detection photosensitive sensor fingerprint induction zone collected Brightness value.

When carrying out fingerprint recognition, working as the light reflected in photosensitive sensor acquisition fingerprint induction zone through user's finger is used Preceding brightness value.After at a time detecting the first present intensity value, perform the next step suddenly, by the first present intensity value and in advance The normal brightness value deposited is compared, and according to comparison result, executes subsequent operation.

It can be judged by a variety of conditions in operation, open and execute in detection photosensitive sensor fingerprint induction zone collected The step of current brightness value of light through user's finger reflection.One is in detection photosensitive sensor fingerprint collected Before the step of current brightness value of light through user's finger reflection in induction zone, the method can also include: judgement Whether the touch operation in fingerprint collecting region matches with preset operational attribute, if touch operation and preset operational attribute Match, then executes the current brightness value of the light through user's finger reflection in detection photosensitive sensor fingerprint induction zone collected The step of.The judgment method can prevent mistake touching operation of the user in fingerprint collecting region, improve the intelligence of terminal.

Another kind is that the light through user's finger reflection in detection photosensitive sensor fingerprint induction zone collected is worked as Before the step of preceding brightness value, the method can also include: selection operation of the detection to fingerprint recognition program interface entrance, If detecting the selection operation to fingerprint recognition program interface entrance, the detection photosensitive sensor fingerprint collected is executed The step of present intensity value of light through user's finger reflection in induction zone.Application Program Interface entrance can be it is a variety of, such as The payment interface entrance etc. paid using fingerprint.After detecting to the selection operation of fingerprint recognition program interface entrance, The display brightness that the display brightness of mobile terminal is adjusted to mobile terminal when recording with fingerprint matches, to improve fingerprint knowledge Not rate ensure that going on smoothly for the application operating carried out by fingerprint recognition.

Difference between step 203, calculating normal brightness value and the first present intensity value.

The first present intensity value of the light through user's finger reflection in fingerprint induction zone is detected using photosensitive sensor Afterwards, extract the normal brightness value that collects and records when fingerprint is recorded from designated storage location, and calculate normal brightness value and Difference between first present intensity value.

The corresponding relationship of step 204, the backlight level of backlight based on pre-stored brightness value and mobile terminal, really Calibrate the corresponding normal backlight grade of quasi- brightness value.

For the mobile terminal for using backlight luminous, backlight is correspondingly arranged on different backlight levels, usual backlight Higher grade, and the brightness that backlight issues is higher, and the display brightness of mobile terminal is higher.Mobile terminal is stored in advance in the application The corresponding relationship of the brightness value of the display brightness of the backlight level and mobile terminal of backlight, such as records backlight level 1- brightness The multiple groups corresponding relationship of value 1,2 backlight level n- brightness value n of backlight level 2- brightness value.Above-mentioned corresponding relationship can be remembered Record is in designated position, in preset table.

This step is extracted after the first present intensity value of detection photosensitive sensor acquisition and searches pre-stored brightness The corresponding relationship of value and backlight level, determines the corresponding backlight level of normal brightness value, and the backlight level is defined as standard Backlight level.

Step 205, according to difference and normal backlight grade, adjust the corresponding backlight level of the first present intensity value, up to The the second present intensity value detected is matched with normal brightness value.

Difference and normal backlight grade between calculated normal brightness value and the first present intensity value are right The backlight level of backlight is adjusted step by step, until under the backlight level of mobile terminal after the adjustment, photosensitive sensor acquisition The brightness value arrived i.e. the second present intensity value is matched with normal brightness value.

It is described that the corresponding backlight level of first present intensity value is adjusted according to difference and normal backlight grade, until detection To the second present intensity value matched with normal brightness value the step of can be accomplished in several ways, such as can be by with lower section Formula is realized: if difference is greater than the first preset threshold, the backlight level of backlight being turned up to normal backlight grade;It obtains and improves The third present intensity value of light after backlight level through user's finger reflection in photosensitive sensor fingerprint induction zone collected; If the difference between normal brightness value and third present intensity value is still greater than the first preset threshold, in the base of normal backlight grade The backlight level of backlight is improved on plinth step by step, until normal brightness value and the difference of the second present intensity value detected are less than First preset threshold.

Wherein, described the step of improving the backlight level of backlight step by step on the basis of normal backlight grade, can wrap It includes: firstly, being improved the backlight level of backlight by normal backlight grade N to N+1;Secondly, the backlight level of setting backlight For N+1.

If difference is less than or equal to the first preset threshold, the display brightness and fingerprint of current mobile terminal can be determined that Display brightness matching when recording operates without carrying out the adjusting of display brightness of mobile terminal, directly carries out subsequent fingerprint The identification of information operates.

In practice, the influence of the factors such as the backlight performance of brightness, mobile terminal based on mobile terminal local environment, In fingerprint identification process, exists and adjust even if by the backlight level of backlight to normal backlight grade, photosensitive sensor detects Brightness value and the still unmatched problem of normal brightness value, when the problem occur when, the embodiment of the present invention use in normal backlight The mode of backlight level is adjusted on the basis of grade step by step, further to adjust the display brightness of mobile terminal, is finally reached aobvious Show brightness matching.

, can be according to the first preset threshold be actually preset during above-mentioned backlight level adjustment, first is default Threshold value is smaller, and the display brightness when display brightness and fingerprint of mobile terminal when fingerprint detection are recorded is closer, fingerprint recognition Accuracy it is higher.

For example, if w-a < r is calculated, r is first pre- after getting normal brightness value w and the first present intensity value a If threshold value, then adjusted without display brightness, executes subsequent finger print information and obtain and identify operation;If the w- being calculated The backlight level of backlight is then turned up to normal backlight grade N and reuses light sensor under normal backlight grade by a > r Device acquires brightness value a1If w-a1> r then increases the backlight level of backlight, N step by step on the basis of normal backlight grade N → N+1 acquires brightness value a using photosensitive sensor after the primary increase for completing backlight level2, adjustment is carried on the back through the above way The backlight level of light source, until normal brightness value w brightness value a corresponding with backlight level adjusted (N+m)mDifference be less than First preset threshold r, wherein m is positive integer.

It is described that the corresponding backlight level of first present intensity value is adjusted according to difference and normal backlight grade, until detection To the second present intensity value matched with normal brightness value the step of can be accomplished in several ways, such as can be by with lower section Formula is realized: if difference turns down the backlight level of backlight to normal backlight grade less than the second preset threshold;Obtaining reduces 4th present intensity value of the light after backlight level through user's finger reflection in photosensitive sensor fingerprint induction zone collected; If the difference between normal brightness value and the 4th present intensity value is still less than the second preset threshold, in the base of normal backlight grade The backlight level of backlight is reduced on plinth step by step, until normal brightness value and the difference of the second present intensity value detected are greater than Second preset threshold;Wherein, the second preset threshold is negative.

Wherein, described the step of reducing the backlight level of backlight step by step on the basis of normal backlight grade, can wrap It includes: firstly, the backlight level of backlight is reduced to N-1 by normal backlight grade N;Secondly, the backlight level of setting backlight For N-1.

If difference is greater than or equal to the second preset threshold, the display brightness and fingerprint of current mobile terminal can be determined that Display brightness matching when recording operates without carrying out the adjusting of display brightness of mobile terminal, directly carries out subsequent fingerprint The identification of information operates.

During above-mentioned backlight level adjustment, can according to the second preset threshold for actually presetting brightness value, Since the second preset threshold is negative, the second preset threshold is bigger, the display brightness and finger of mobile terminal when fingerprint recognition Display brightness when line is recorded is closer, and the accuracy of fingerprint recognition is higher.

For example, if w-b > f is calculated, f is second pre- after getting normal brightness value w and the first present intensity value b If threshold value, f is negative, then adjusts without display brightness, executes subsequent finger print information and obtains and identify operation;If calculated The backlight level of backlight is then adjusted to normal backlight grade N, at normal backlight grade N, is made again by obtained w-b < f Brightness value b is acquired with photosensitive sensor1If w-b1< f then reduces backlight on the basis of normal backlight grade N step by step Backlight level, N → N-1 acquire brightness value b using photosensitive sensor after the primary reduction for completing backlight level2, by above-mentioned Mode adjusts the backlight level of backlight, until normal brightness value w brightness value b corresponding with backlight level adjusted (N-n)n Difference be greater than the second preset threshold f, wherein n be positive integer.

In concrete operations, if the adjusting of the backlight level by backlight, can not make the display brightness of mobile terminal Display brightness when recording with fingerprint matches, for example, even if the backlight level of backlight is adjusted to maximum, but carried on the back in maximum Under light grade, the normal brightness value that photosensitive sensor collected brightness value records when still recording with fingerprint is mismatched, this feelings Under shape, the display brightness of mobile terminal can also be adjusted in the following manner.

Specifically, the display screen of the mobile terminal is Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) screen when, if the difference that the method can also include: normal brightness value with the 5th present intensity value detected Value is still greater than the first preset threshold, then keeps the display grayscale of the display image in fingerprint collecting region constant, will remove in display screen All image-regions except fingerprint collecting region are determined as background area, at least one successively reduced step by step with display grayscale The display image of image replacement background area is shown, until normal brightness value and the difference of the second present intensity value detected are small In the first preset threshold.In the above process, the 5th present intensity value is after backlight level is adjusted to maximum, and photosensitive sensor is adopted The brightness value collected;Second present intensity value is after the display image replacement of background area, and photosensitive sensor is collected bright Angle value.

IR DROP principle is utilized in above-mentioned processing method, the brightness of the display image of the background area by reducing screen, The brightness that fingerprint collecting region can be increased, after backlight is adjusted to maximum backlight level, if normal brightness value with detect The difference of the 5th present intensity value be still greater than the first preset threshold, then can fix backlight under maximum backlight level, adopt Further adjustment is done to the screen intensity in fingerprint collecting region with this method.The different grayscale of background area show replacing for image Method is changed, the adjusting to the display brightness of mobile terminal can be further realized, enriches the brightness control function of mobile terminal.

The display image of at least one the display image replacement background area successively reduced step by step with display grayscale, directly It with the difference of the second present intensity value that detects may include: first less than the step of the first preset threshold to normal brightness value Step reduces the current display grayscale in background area;Second step obtains photosensitive sensor institute after the display grayscale reduction of background area 6th present intensity value of the light through user's finger reflection in the fingerprint induction zone of acquisition;Third step, if normal brightness value with The difference of 6th present intensity value is still greater than the first preset threshold, then executes the step for reducing the current display grayscale in background area Suddenly, until the difference of normal brightness value and the second present intensity value detected is less than the first preset threshold.

Wherein, the step of display grayscale for reducing background area currently may include: the M ash that background area is current First display image of rank replaces with the second display image of M-1 grayscale.

Fig. 3 is the schematic diagram of the display screen of mobile terminal provided in an embodiment of the present invention.Shown in Fig. 3, A is the back of display screen Scene area, B are the fingerprint collecting region of display screen.When the backlight of the mobile terminal with display screen shown in Fig. 3 is adjusted to maximum After backlight level, if normal brightness value and the difference of the 5th present intensity value detected are still greater than the first preset threshold, It keeps the brightness of the display image in the display area B constant, the display image in the display area A is replaced, replacement is shown The display grayscale of diagram picture reduces step by step, to increase the brightness in the display area B.

When the display area A is completely black display, i.e. RGB in the display area A is 000, and the display area B is complete white display, When RGB i.e. in the display area B is 255255255, the brightness in the display area B is maximum.

When the display image in the display area A replaces with the display image of a certain grayscale, if at this moment normal brightness value The difference of the brightness value in the display area B detected with photosensitive sensor is less than or equal to the first preset threshold, then adjusts knot Beam;Otherwise continue to carry out display image replacement in the display area A, the display grayscale of the display image of replacement reduces step by step, directly To all black picture is substituted for, the display area A is completely black display, and adjustment terminates.

If step 206 detects that the second present intensity value is matched with normal brightness value, fingerprint sensor acquisition the is controlled One finger print information.

During the display brightness to mobile terminal is adjusted, if detecting photosensitive sensor after certain primary adjustment Second present intensity value of acquisition is matched with normal brightness value, then controls fingerprint sensor and acquire the first finger print information.

Step 207 matches the first finger print information with the second finger print information of preparatory typing, obtains fingerprint recognition knot Fruit.

The finger print information of the user recorded when the embodiment of the present invention records user fingerprints is known as the second finger print information, will record The current brightness of light through user's finger reflection in the fingerprint induction zone that photosensitive sensor acquires when making the second finger print information Value is known as normal brightness value.

After control fingerprint sensor collects the first finger print information, by the first finger print information currently acquired and prerecord The second finger print information of user match, if successful match, fingerprint recognition success determines to carry out fingerprint recognition operation Active user be fingerprint record when user;Otherwise, then fingerprint recognition fails.

According to an embodiment of the present invention, mobile terminal is when recording the first finger print information of user using fingerprint sensor, together When the first brightness value of display screen is obtained using photosensitive sensor, and record first brightness value, when carrying out fingerprint recognition, shifting Dynamic terminal can be adjusted the second brightness value of photosensitive sensor current detection, make the second brightness value adjusted and in advance note The first brightness value matching of record, screen intensity when recording the current screen brightness of display screen with fingerprint matches, to improve Fingerprint recognition rate.Compared with screen intensity is adjusted to most bright existing method in fingerprint recognition, since this method only needs The screen intensity that screen intensity is adjusted to when recording with fingerprint is matched, without adjusting screen to most bright, therefore reduces terminal Power consumption slows down terminal loss, extends the service life of terminal.

Fig. 4 is one of the block diagram of mobile terminal provided in an embodiment of the present invention.Mobile terminal shown in Fig. 4 includes display Screen, the display screen includes underlay substrate, mobile terminal further include:

Photosensitive sensor and fingerprint sensor, photosensitive sensor are located in the black matrix of display screen, and fingerprint sensor is located at On the underlay substrate of display screen;

Brightness value detection module 301, for detecting in photosensitive sensor fingerprint induction zone collected through user hand The current brightness value of the light of digital reflex.

Display brightness adjusts module 302, for bright according to the first present intensity value and pre-stored standard that detect Angle value adjusts the display brightness of the mobile terminal.

First finger print information acquisition module 303, if for detecting the second present intensity value and the normal brightness value Match, then controls fingerprint sensor and acquire the first finger print information.

Finger print information matching module 304, for by the second finger print information of first finger print information and preparatory typing into Row matching, obtains fingerprint recognition result;Wherein, the normal brightness value are as follows: described photosensitive described in typing when the second finger print information The current brightness value of light through user's finger reflection in the fingerprint induction zone of sensor acquisition.

According to an embodiment of the present invention, mobile terminal is when recording the first finger print information of user using fingerprint sensor, together When the first brightness value of display screen is obtained using photosensitive sensor, and record first brightness value, when carrying out fingerprint recognition, shifting Dynamic terminal can be adjusted the second brightness value of photosensitive sensor current detection, make the second brightness value adjusted and in advance note The first brightness value matching of record, screen intensity when recording the current screen brightness of display screen with fingerprint matches, to improve Fingerprint recognition rate.Compared with screen intensity is adjusted to most bright existing method in fingerprint recognition, since this method only needs The screen intensity that screen intensity is adjusted to when recording with fingerprint is matched, without adjusting screen to most bright, therefore reduces terminal Power consumption slows down terminal loss, extends the service life of terminal.

As shown in figure 5, on the basis of fig. 4, mobile terminal further include:

Second finger print information obtains module 401, for obtaining the second finger print information of the fingerprint sensor acquisition.

Normal brightness value memory module 402 acquires photosensitive sensor institute when second finger print information for obtaining The current brightness value of the light for handling digital reflex in the fingerprint induction zone of acquisition, and it is stored as normal brightness value.

Brightness value detection module 403, for detecting in photosensitive sensor fingerprint induction zone collected through user hand The current brightness value of the light of digital reflex.

Display brightness adjusts module 404, for bright according to the first present intensity value and pre-stored standard that detect Angle value adjusts the display brightness of the mobile terminal.

First finger print information acquisition module 405, if for detecting the second present intensity value and the normal brightness value Match, then controls fingerprint sensor and acquire the first finger print information.

Finger print information matching module 406, for by the second finger print information of first finger print information and preparatory typing into Row matching, obtains fingerprint recognition result;Wherein, the normal brightness value are as follows: described photosensitive described in typing when the second finger print information The current brightness value of light through user's finger reflection in the fingerprint induction zone of sensor acquisition.

The display brightness adjusts module 404

Difference computational submodule 4041, for calculating the difference between the normal brightness value and the first present intensity value Value;

Normal backlight grade determines submodule 4042, for the back based on pre-stored brightness value Yu the mobile terminal The corresponding relationship of the backlight level of light source determines the corresponding normal backlight grade of the normal brightness value;

Backlight level adjusting submodule 4043, for according to the difference and the normal backlight grade, adjusting described the The corresponding backlight level of one present intensity value, until the second present intensity value and the normal brightness value that detect Match.

In the embodiment of the present invention, it is preferable that the backlight level adjusting submodule 4043 includes:

First backlight level adjustment unit, if being greater than the first preset threshold for the difference, by the backlight Backlight level is turned up to the normal backlight grade;

Third present intensity value acquiring unit, for photosensitive sensor fingerprint sense collected after acquisition raising backlight level Answer the third present intensity value of the light through user's finger reflection in area;

The first backlight level adjustment unit, if be also used to the normal brightness value and the third present intensity value it Between difference be still greater than first preset threshold, then improve the back of backlight step by step on the basis of the normal backlight grade Light grade, until the difference of the normal brightness value and the second present intensity value detected is less than the described first default threshold Value.

In the embodiment of the present invention, it is preferable that the first backlight level adjustment unit includes:

Backlight level improves subelement step by step, for by the backlight level of the backlight by the normal backlight grade N It improves to N+1;

Subelement is arranged in first backlight level, and the backlight level for backlight to be arranged is N+1.

In the embodiment of the present invention, it is preferable that the backlight level adjusting submodule 4043 includes:

Second backlight level adjustment unit, if for the difference less than the second preset threshold, by the backlight Backlight level is turned down to the normal backlight grade;

4th present intensity value acquiring unit, for photosensitive sensor fingerprint sense collected after acquisition reduction backlight level Answer the 4th present intensity value of the light through user's finger reflection in area;

The second backlight level adjustment unit, if be also used to the normal brightness value and the 4th present intensity value it Between difference still less than second preset threshold, then reduce the backlight step by step on the basis of the normal backlight grade Backlight level, until with the difference of the second present intensity value detected to be greater than described second pre- for the normal brightness value If threshold value;

Wherein, second preset threshold is negative.

In the embodiment of the present invention, it is preferable that the second backlight level adjustment unit includes:

Backlight level reduces subelement step by step, for by the backlight level of the backlight by the normal backlight grade N It is reduced to N-1;

Subelement is arranged in second backlight level, and the backlight level for backlight to be arranged is N-1.

In the embodiment of the present invention, it is preferable that the display screen of the mobile terminal is Organic Light Emitting Diode screen, the shifting Dynamic terminal further include:

Show that image keeps module, if still for the difference of the normal brightness value and the 5th present intensity value detected Greater than first preset threshold, then keep the display grayscale of the display image in fingerprint collecting region constant;

Background area determining module, for by all image districts in the display screen in addition to the fingerprint collecting region Domain is determined as background area;

Image replacement module is shown, described at least one display image replacement for successively being reduced step by step with display grayscale The display image of background area, until the difference of the normal brightness value and the second present intensity value detected is less than institute State the first preset threshold.

In the embodiment of the present invention, it is preferable that the display image replacement module includes:

Show that grayscale reduces submodule, for reducing the current display grayscale in the background area;

6th present intensity value acquisition submodule, the light sensor after the display grayscale for obtaining background area reduces 6th present intensity value of the light through user's finger reflection in device fingerprint induction zone collected;

The display grayscale reduces submodule, if being also used to the difference of the normal brightness value Yu the 6th present intensity value Value is still greater than first preset threshold, then executes described the step of reducing the current display grayscale in the background area, until The difference of the normal brightness value and the second present intensity value detected is less than first preset threshold.

In the embodiment of the present invention, it is preferable that the display grayscale reduces submodule, specifically for working as the background area First display image of preceding M grayscale replaces with the second display image of M-1 grayscale.

In the embodiment of the present invention, it is preferable that the normal brightness value memory module 402 includes:

Initial luma values acquisition submodule, for obtaining institute in the preset duration during acquiring second finger print information State in the fingerprint induction zone that photosensitive sensor is acquired according to predeterminated frequency handle at least one of light of digital reflex at the beginning of Beginning brightness value;

Mean value calculation submodule, for calculating the average value of at least one initial luma values;

Normal brightness value determines submodule, for the average value to be determined as normal brightness value and is stored.

In the embodiment of the present invention, it is preferable that the mobile terminal further include:

Operational attribute judgment module, in the detection photosensitive sensor fingerprint induction zone collected through with Before the step of current brightness value of the light of family finger reflection, judge whether is touch operation in the fingerprint collecting region It is matched with preset operational attribute;

The brightness value detection module is also used to execute inspection when the touch operation is matched with preset operational attribute The step of surveying the current brightness value of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected.

In the embodiment of the present invention, it is preferable that the mobile terminal further include:

Selection operation detection module, in the detection photosensitive sensor fingerprint induction zone collected through with Before the step of current brightness value of the light of family finger reflection, detects the selection to fingerprint recognition program interface entrance and grasp Make;

The brightness value detection module is also used to when detecting the selection operation to fingerprint recognition program interface entrance, Execute the present intensity of the light through user's finger reflection in the detection photosensitive sensor fingerprint induction zone collected The step of value.

According to an embodiment of the present invention, mobile terminal is when recording the first finger print information of user using fingerprint sensor, together When the first brightness value of display screen is obtained using photosensitive sensor, and record first brightness value, when carrying out fingerprint recognition, shifting Dynamic terminal can be adjusted the second brightness value of photosensitive sensor current detection, make the second brightness value adjusted and in advance note The first brightness value matching of record, screen intensity when recording the current screen brightness of display screen with fingerprint matches, to improve Fingerprint recognition rate.Compared with screen intensity is adjusted to most bright existing method in fingerprint recognition, since this method only needs The screen intensity that screen intensity is adjusted to when recording with fingerprint is matched, without adjusting screen to most bright, therefore reduces terminal Power consumption slows down terminal loss, extends the service life of terminal.

Another embodiment of the present invention additionally provides a kind of mobile terminal, including processor, and memory is stored in the storage On device and the computer program that can run on the processor, realized when the computer program is executed by the processor Each process of the embodiment of fingerprint identification method is stated, and identical technical effect can be reached, it is no longer superfluous here to avoid repeating It states.

Another embodiment of the present invention additionally provides a kind of computer readable storage medium, deposits on computer readable storage medium Computer program is contained, each of the embodiment such as above-mentioned any fingerprint recognition methods is realized in shooting processing when being executed by processor Process, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage Medium, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc..

Fig. 6 is the three of the block diagram of mobile terminal provided in an embodiment of the present invention.Mobile terminal 500 shown in fig. 6 include: to A few processor 501, memory 502, at least one network interface 504, user interface 503, fingerprint sensor 506 and photosensitive Sensor 507.Various components in mobile terminal 500 are coupled by bus system 505.It is understood that bus system 505 For realizing the connection communication between these components.Bus system 505 except include data/address bus in addition to, further include power bus, Control bus and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as bus system in Fig. 6 505。

Wherein, user interface 503 may include display, keyboard or pointing device (for example, mouse, trace ball (trackball), touch-sensitive plate or touch screen etc..

It is appreciated that the memory 502 in the embodiment of the present invention can be volatile memory or nonvolatile memory, It or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read- OnlyMemory, ROM), programmable read only memory (ProgrammableROM, PROM), Erasable Programmable Read Only Memory EPROM (ErasablePROM, EPROM), electrically erasable programmable read-only memory (ElectricallyEPROM, EEPROM) dodge It deposits.Volatile memory can be random access memory (RandomAccessMemory, RAM), and it is slow to be used as external high speed It deposits.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory (StaticRAM, SRAM), dynamic random access memory (DynamicRAM, DRAM), Synchronous Dynamic Random Access Memory (SynchronousDRAM, SDRAM), double data speed synchronous dynamic RAM (DoubleDataRate SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links Dynamic random access memory (SynchlinkDRAM, SLDRAM) and direct rambus random access memory (DirectRambusRAM, DRRAM).The memory 502 of the system and method for description of the embodiment of the present invention is intended to include but unlimited In the memory of these and any other suitable type.

In some embodiments, memory 502 stores following element, executable modules or data structures, or Their subset of person or their superset: operating system 5021 and application program 5022.

Wherein, operating system 5021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for Realize various basic businesses and the hardware based task of processing.Application program 5022 includes various application programs, such as media Player (MediaPlayer), browser (Browser) etc., for realizing various applied business.Realize embodiment of the present invention side The program of method may be embodied in application program 5022.

In embodiments of the present invention, mobile terminal 500 further include: be stored on memory 502 and can be on processor 501 The computer program of operation, computer program realize following steps when being executed by processor 501: detecting the photosensitive sensor institute The current brightness value of light through user's finger reflection in the fingerprint induction zone of acquisition, according to the first present intensity detected Value and pre-stored normal brightness value, adjust the display brightness of the mobile terminal, if detect the second present intensity value with The normal brightness value matching, then control fingerprint sensor and acquire the first finger print information, by first finger print information and in advance Second finger print information of typing is matched, and fingerprint recognition result is obtained, wherein the normal brightness value are as follows: described in typing When two finger print informations, light through user's finger reflection in the fingerprint induction zone of photosensitive sensor acquisition it is current Brightness value.

The method that the embodiments of the present invention disclose can be applied in processor 501, or be realized by processor 501. Processor 501 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each Step can be completed by the integrated logic circuit of the hardware in processor 501 or the instruction of software form.Above-mentioned processing Device 501 can be general processor, digital signal processor (DigitalSignalProcessor, DSP), specific integrated circuit (ApplicationSpecific IntegratedCircuit, ASIC), ready-made programmable gate array (FieldProgrammableGateArray, FPGA) either other programmable logic device, discrete gate or transistor logic Device, discrete hardware components.It may be implemented or execute disclosed each method, step and the logical box in the embodiment of the present invention Figure.General processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with the present invention The step of method disclosed in embodiment, can be embodied directly in hardware decoding processor and execute completion, or use decoding processor In hardware and software module combination execute completion.Software module can be located at random access memory, and flash memory, read-only memory can The computer readable storage medium of this fields such as program read-only memory or electrically erasable programmable memory, register maturation In.The computer readable storage medium is located at memory 502, and processor 501 reads the information in memory 502, hard in conjunction with it Part completes the step of above method.Specifically, computer program, computer program are stored on the computer readable storage medium Each step of the embodiment such as above-mentioned fingerprint identification method is realized when being executed by processor 501.

It is understood that the embodiment of the present invention description these embodiments can with hardware, software, firmware, middleware, Microcode or combinations thereof is realized.For hardware realization, processing unit be may be implemented in one or more specific integrated circuits (ApplicationSpecificIntegratedCircuits, ASIC), digital signal processor (DigitalSignalProcessing, DSP), digital signal processing appts (DSPDevice, DSPD), programmable logic device (ProgrammableLogicDevice, PLD), field programmable gate array (Field-ProgrammableGateArray, FPGA), general processor, controller, microcontroller, microprocessor, other electronics lists for executing herein described function In member or combinations thereof.

For software implementations, can by execute the embodiment of the present invention described in function module (such as process, function etc.) come Realize technology described in the embodiment of the present invention.Software code is storable in memory and is executed by processor.Memory can With portion realizes in the processor or outside the processor.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

Calculate the difference between the normal brightness value and the first present intensity value;

Corresponding relationship based on pre-stored brightness value Yu the backlight level of the backlight of the mobile terminal, determines institute State the corresponding normal backlight grade of normal brightness value;

According to the difference and the normal backlight grade, the corresponding backlight level of the first present intensity value is adjusted, Until the second present intensity value detected is matched with the normal brightness value.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

If the difference is greater than the first preset threshold, the backlight level of the backlight is turned up to the normal backlight Grade;

Obtain the light reflected in photosensitive sensor fingerprint induction zone collected through user's finger after improving backlight level Third present intensity value;

If the difference between the normal brightness value and the third present intensity value is still greater than first preset threshold, The backlight level of backlight is then improved step by step on the basis of the normal backlight grade, until the normal brightness value and detection The difference of the second present intensity value arrived is less than first preset threshold.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

The backlight level of the backlight is improved by the normal backlight grade N to N+1;

The backlight level that backlight is arranged is N+1.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

If the difference turns down the backlight level of the backlight to the normal backlight less than the second preset threshold Grade;

Obtain the light reflected in photosensitive sensor fingerprint induction zone collected through user's finger after reducing backlight level The 4th present intensity value;

If difference between the normal brightness value and the 4th present intensity value still less than second preset threshold, Then reduce the backlight level of the backlight step by step on the basis of the normal backlight grade, until the normal brightness value with The difference of the second present intensity value detected is greater than second preset threshold;

Wherein, second preset threshold is negative.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

The backlight level of the backlight is reduced to N-1 by the normal backlight grade N;

The backlight level that backlight is arranged is N-1.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

If the difference of the normal brightness value and the 5th present intensity value detected is still greater than first preset threshold, Then keep the display grayscale of the display image in fingerprint collecting region constant;

All image-regions in the display screen in addition to the fingerprint collecting region are determined as background area;

At least one the display image successively reduced step by step with display grayscale replaces the display image of the background area, directly Difference to the normal brightness value and the second present intensity value detected is less than first preset threshold;

The display screen of the mobile terminal is Organic Light Emitting Diode screen.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

Reduce the current display grayscale in the background area;

The photosensitive sensor fingerprint induction zone collected is interior through user after obtaining the display grayscale reduction of background area 6th present intensity value of the light of finger reflection;

If the difference of the normal brightness value and the 6th present intensity value is still greater than first preset threshold, hold The step of row is described to reduce the current display grayscale in the background area, until the normal brightness value with detect described the The difference of two present intensity values is less than first preset threshold.

Optionally, following steps be can also be achieved when computer program is executed by processor 501: the background area is current M grayscale first display image replace with M-1 grayscale second display image.

Optionally, following steps be can also be achieved when computer program is executed by processor 501: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, institute is obtained State the second finger print information of fingerprint sensor acquisition;

Obtain warp when acquiring second finger print information in the photosensitive sensor fingerprint induction zone collected The current brightness value of the light of finger reflection, and it is stored as normal brightness value.

Optionally, following steps be can also be achieved when computer program is executed by processor 501:

The photosensitive sensor is according to predeterminated frequency in preset duration during acquisition acquisition second finger print information At least one initial luma values of the light for handling digital reflex in the fingerprint induction zone of acquisition;

Calculate the average value of at least one initial luma values;

The average value is determined as normal brightness value and is stored.

Optionally, following steps be can also be achieved when computer program is executed by processor 501: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, institute is judged State whether the touch operation in fingerprint collecting region matches with preset operational attribute;

If the touch operation is matched with preset operational attribute, the detection photosensitive sensor finger collected is executed The step of current brightness value of light through user's finger reflection in line induction zone.

Optionally, following steps be can also be achieved when computer program is executed by processor 501: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, detection pair The selection operation of fingerprint recognition program interface entrance;

If detecting the selection operation to fingerprint recognition program interface entrance, the detection photosensitive sensor is executed The step of present intensity value of light through user's finger reflection in fingerprint induction zone collected.

Mobile terminal 500 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here It repeats no more.

According to an embodiment of the present invention, it when carrying out fingerprint recognition, detects in photosensitive sensor fingerprint induction zone collected First brightness value of the light through user's finger reflection, later according to the normal brightness value that stores when recording user fingerprints information and First brightness value of current detection, adjusts the display brightness of mobile terminal, so that the current display brightness and fingerprint of mobile terminal Display brightness matching when recording, to improve fingerprint recognition rate.It is most bright with screen intensity is adjusted in fingerprint recognition Existing method compare, due to this method screen intensity need to be only adjusted to fingerprint record when screen intensity match, be not necessarily to Screen is adjusted to most bright, therefore reduces power consumption of terminal, terminal loss is slowed down, extends the service life of terminal.

Fig. 7 is the four of the block diagram of mobile terminal provided in an embodiment of the present invention.Specifically, the mobile terminal 600 in Fig. 7 can Think mobile phone, tablet computer, personal digital assistant (PersonalDigital Assistant, PDA) or vehicle-mounted computer etc..

Mobile terminal 600 in Fig. 7 includes radio frequency (RadioFrequency, RF) circuit 610, memory 620, input list First 630, display unit 640, processor 660, voicefrequency circuit 670, WiFi (WirelessFidelity) module 680, power supply 690, fingerprint sensor 6100 and photosensitive sensor 6200.

Wherein, input unit 630 can be used for receiving the number or character information of user's input, and generation and mobile terminal The related signal input of 600 user setting and function control.Specifically, in the embodiment of the present invention, which can To include touch panel 631.Touch panel 631, also referred to as touch screen collect the touch operation of user on it or nearby (for example user uses the operations of any suitable object or attachment on touch panel 631 such as finger, stylus), and according to preparatory The formula of setting drives corresponding attachment device.Optionally, touch panel 631 may include touch detecting apparatus and touch controller Two parts.Wherein, the touch orientation of touch detecting apparatus detection user, and touch operation bring signal is detected, by signal Send touch controller to;Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate, The processor 660 is given again, and can be received order that processor 660 is sent and be executed.Furthermore, it is possible to using resistance-type, The multiple types such as condenser type, infrared ray and surface acoustic wave realize touch panel 631.In addition to touch panel 631, input unit 630 can also include other input equipments 632, other input equipments 632 can include but is not limited to physical keyboard, function key One of (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc. are a variety of.

Wherein, display unit 640 can be used for showing information input by user or be supplied to the information and movement of user The various menu interfaces of terminal 600.Display unit 640 may include display panel 641, optionally, can use LCD or organic hair The forms such as optical diode (OrganicLight-EmittingDiode, OLED) configure display panel 641.

It should be noted that touch panel 631 can cover display panel 641, touch display screen is formed, when the touch display screen is examined After measuring touch operation on it or nearby, processor 660 is sent to determine the type of touch event, is followed by subsequent processing device 660 provide corresponding visual output according to the type of touch event in touch display screen.

Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with The interface elements such as the icon comprising at least one application program and/or widget desktop control.The Application Program Interface viewing area Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example, Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.

Wherein processor 660 is the control centre of mobile terminal 600, utilizes various interfaces and connection whole mobile phone Various pieces, by running or executing the software program and/or module that are stored in first memory 621, and calling storage Data in second memory 622 execute the various functions and processing data of mobile terminal 600, thus to mobile terminal 600 Carry out integral monitoring.Optionally, processor 660 may include one or more processing units.

In embodiments of the present invention, mobile terminal 600 further include: be stored in memory 620 and can be transported on processor 660 Capable computer program specifically can be the computer program in application program, and computer program is executed by processor 660 Shi Shixian following steps: working as the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected is detected Preceding brightness value adjusts the mobile terminal according to the first present intensity value and pre-stored normal brightness value detected Display brightness, if detecting, the second present intensity value is matched with the normal brightness value, controls fingerprint sensor acquisition the First finger print information is matched with the second finger print information of preparatory typing, obtains fingerprint recognition knot by one finger print information Fruit, wherein the normal brightness value are as follows: described in typing when the second finger print information, the fingerprint of the photosensitive sensor acquisition The current brightness value of light through user's finger reflection in induction zone.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

Calculate the difference between the normal brightness value and the first present intensity value;

Corresponding relationship based on pre-stored brightness value Yu the backlight level of the backlight of the mobile terminal, determines institute State the corresponding normal backlight grade of normal brightness value;

According to the difference and the normal backlight grade, the corresponding backlight level of the first present intensity value is adjusted, Until the second present intensity value detected is matched with the normal brightness value.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

If the difference is greater than the first preset threshold, the backlight level of the backlight is turned up to the normal backlight Grade;

Obtain the light reflected in photosensitive sensor fingerprint induction zone collected through user's finger after improving backlight level Third present intensity value;

If the difference between the normal brightness value and the third present intensity value is still greater than first preset threshold, The backlight level of backlight is then improved step by step on the basis of the normal backlight grade, until the normal brightness value and detection The difference of the second present intensity value arrived is less than first preset threshold.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

The backlight level of the backlight is improved by the normal backlight grade N to N+1;

The backlight level that backlight is arranged is N+1.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

If the difference turns down the backlight level of the backlight to the normal backlight less than the second preset threshold Grade;

Obtain the light reflected in photosensitive sensor fingerprint induction zone collected through user's finger after reducing backlight level The 4th present intensity value;

If difference between the normal brightness value and the 4th present intensity value still less than second preset threshold, Then reduce the backlight level of the backlight step by step on the basis of the normal backlight grade, until the normal brightness value with The difference of the second present intensity value detected is greater than second preset threshold;

Wherein, second preset threshold is negative.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

The backlight level of the backlight is reduced to N-1 by the normal backlight grade N;

The backlight level that backlight is arranged is N-1.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

If the difference of the normal brightness value and the 5th present intensity value detected is still greater than first preset threshold, Then keep the display grayscale of the display image in fingerprint collecting region constant;

All image-regions in the display screen in addition to the fingerprint collecting region are determined as background area;

At least one the display image successively reduced step by step with display grayscale replaces the display image of the background area, directly Difference to the normal brightness value and the second present intensity value detected is less than first preset threshold;

The display screen of the mobile terminal is Organic Light Emitting Diode screen.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

Reduce the current display grayscale in the background area;

The photosensitive sensor fingerprint induction zone collected is interior through user after obtaining the display grayscale reduction of background area 6th present intensity value of the light of finger reflection;

If the difference of the normal brightness value and the 6th present intensity value is still greater than first preset threshold, hold The step of row is described to reduce the current display grayscale in the background area, until the normal brightness value with detect described the The difference of two present intensity values is less than first preset threshold.

Optionally, following steps be can also be achieved when computer program is executed by processor 601: the background area is current M grayscale first display image replace with M-1 grayscale second display image.

Optionally, following steps be can also be achieved when computer program is executed by processor 601: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, institute is obtained State the second finger print information of fingerprint sensor acquisition;

Obtain warp when acquiring second finger print information in the photosensitive sensor fingerprint induction zone collected The current brightness value of the light of finger reflection, and it is stored as normal brightness value.

Optionally, following steps be can also be achieved when computer program is executed by processor 601:

The photosensitive sensor is according to predeterminated frequency in preset duration during acquisition acquisition second finger print information At least one initial luma values of the light for handling digital reflex in the fingerprint induction zone of acquisition;

Calculate the average value of at least one initial luma values;

The average value is determined as normal brightness value and is stored.

Optionally, following steps be can also be achieved when computer program is executed by processor 601: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, institute is judged State whether the touch operation in fingerprint collecting region matches with preset operational attribute;

If the touch operation is matched with preset operational attribute, the detection photosensitive sensor finger collected is executed The step of current brightness value of light through user's finger reflection in line induction zone.

Optionally, following steps be can also be achieved when computer program is executed by processor 601: described photosensitive in the detection Before the step of current brightness value of light through user's finger reflection in sensor fingerprint induction zone collected, detection pair The selection operation of fingerprint recognition program interface entrance;

If detecting the selection operation to fingerprint recognition program interface entrance, the detection photosensitive sensor is executed The step of present intensity value of light through user's finger reflection in fingerprint induction zone collected.

Mobile terminal 600 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here It repeats no more.

As it can be seen that according to an embodiment of the present invention, when carrying out fingerprint recognition, the fingerprint induction collected of detection photosensitive sensor First brightness value of the light through user's finger reflection in area, later according to the normal brightness stored when recording user fingerprints information Value and current detection the first brightness value, adjust the display brightness of mobile terminal so that the current display brightness of mobile terminal with Display brightness matching when fingerprint is recorded, to improve fingerprint recognition rate.Screen intensity is adjusted to in fingerprint recognition Most bright existing method is compared, since screen intensity when screen intensity need to be only adjusted to by this method to be recorded with fingerprint matches, Without adjusting screen to most bright, therefore power consumption of terminal is reduced, slows down terminal loss, extend the service life of terminal.

Since the mobile terminal embodiment essentially corresponds to earlier figures 1- embodiment of the method shown in Fig. 3, therefore this implementation Not detailed place in the description of example, may refer to the related description in previous embodiment, i will not repeat them here.

Those of ordinary skill in the art may be aware that the embodiment in conjunction with disclosed in the embodiment of the present invention describe it is each Exemplary unit and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered Think beyond the scope of this invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In embodiment provided herein, it should be understood that disclosed device and method can pass through others Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of device or unit It connects, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store program code Medium.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (25)

1. a kind of fingerprint identification method is applied to mobile terminal, the mobile terminal includes display screen, and the display screen includes lining Substrate, which is characterized in that the mobile terminal further includes photosensitive sensor and fingerprint sensor, and the photosensitive sensor is located at In the black matrix of the display screen, the fingerprint sensor is located on the underlay substrate, which comprises
Detect the current brightness value of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected;
It is bright according to the first present intensity value and pre-stored normal brightness value, the display for adjusting the mobile terminal that detect Degree;
If detecting, the second present intensity value is matched with the normal brightness value, is controlled fingerprint sensor and is acquired the first fingerprint letter Breath;
First finger print information is matched with the second finger print information of preparatory typing, obtains fingerprint recognition result;
Wherein, the normal brightness value are as follows: described in typing when the second finger print information, the fingerprint of the photosensitive sensor acquisition The current brightness value of light through user's finger reflection in induction zone;
The the first present intensity value and pre-stored normal brightness value that the basis detects adjust the aobvious of the mobile terminal Show brightness, comprising:
Calculate the difference between the normal brightness value and the first present intensity value;
Corresponding relationship based on pre-stored brightness value Yu the backlight level of the backlight of the mobile terminal, determines the mark The corresponding normal backlight grade of quasi- brightness value;
According to the difference and the normal backlight grade, the corresponding backlight level of the first present intensity value is adjusted, until The the second present intensity value detected is matched with the normal brightness value.
2. the method according to claim 1, wherein described according to the difference and the normal backlight grade, The corresponding backlight level of the first present intensity value is adjusted, until the second present intensity value and the standard that detect The step of brightness value matches, comprising:
If the difference is greater than the first preset threshold, the backlight level of the backlight is turned up to the normal backlight etc. Grade;
Obtain the of the light after improving backlight level through user's finger reflection in photosensitive sensor fingerprint induction zone collected Three present intensity values;
If the difference between the normal brightness value and the third present intensity value is still greater than first preset threshold, The backlight level of backlight is improved on the basis of the normal backlight grade step by step, until the normal brightness value with detect The difference of the second present intensity value is less than first preset threshold.
3. according to the method described in claim 2, it is characterized in that, described mention step by step on the basis of the normal backlight grade The step of backlight level of high backlight, comprising:
The backlight level of the backlight is improved by the normal backlight grade N to N+1;
The backlight level that backlight is arranged is N+1.
4. the method according to claim 1, wherein described according to the difference and the normal backlight grade, The corresponding backlight level of the first present intensity value is adjusted, until the second present intensity value and the standard that detect The step of brightness value matches, comprising:
If the difference less than the second preset threshold, the backlight level of the backlight is turned down to the normal backlight etc. Grade;
Obtain the of the light after reducing backlight level through user's finger reflection in photosensitive sensor fingerprint induction zone collected Four present intensity values;
If difference between the normal brightness value and the 4th present intensity value still less than second preset threshold, The backlight level of the backlight is reduced on the basis of the normal backlight grade step by step, until the normal brightness value and detection The difference of the second present intensity value arrived is greater than second preset threshold;
Wherein, second preset threshold is negative.
5. according to the method described in claim 4, it is characterized in that, described drop step by step on the basis of the normal backlight grade The step of backlight level of the low backlight, comprising:
The backlight level of the backlight is reduced to N-1 by the normal backlight grade N;
The backlight level that backlight is arranged is N-1.
6. the method according to claim 1, wherein the display screen of the mobile terminal is Organic Light Emitting Diode Screen, the method also includes:
If the difference of the normal brightness value and the 5th present intensity value detected is still greater than the first preset threshold, holding refers to The display grayscale of the display image of line pickup area is constant;
All image-regions in the display screen in addition to the fingerprint collecting region are determined as background area;
At least one the display image successively reduced step by step with display grayscale replaces the display image of the background area, until institute It states normal brightness value and the difference of the second present intensity value detected is less than first preset threshold.
7. according to the method described in claim 6, described at least one display image successively reduced step by step with display grayscale replaces The display image of the background area is changed, until the difference of the normal brightness value and the second present intensity value detected The step of less than first preset threshold, comprising:
Reduce the current display grayscale in the background area;
The photosensitive sensor fingerprint induction zone collected is interior through user's finger after obtaining the display grayscale reduction of background area 6th present intensity value of the light of reflection;
If the difference of the normal brightness value and the 6th present intensity value is still greater than first preset threshold, institute is executed The step of reducing the current display grayscale in the background area is stated, until the normal brightness value described second is worked as with what is detected The difference of preceding brightness value is less than first preset threshold.
8. according to the method described in claim 7, described the step of reducing the current display grayscale in the background area, comprising:
First display image of the current M grayscale in the background area is replaced with to the second display image of M-1 grayscale.
9. the method according to claim 1, wherein in the detection photosensitive sensor fingerprint collected Before the step of current brightness value of light through user's finger reflection in induction zone, further includes:
Obtain the second finger print information of the fingerprint sensor acquisition;
Obtain when acquiring second finger print information in the photosensitive sensor fingerprint induction zone collected through finger The current brightness value of the light of reflection, and it is stored as normal brightness value.
10. according to the method described in claim 9, it is characterized in that, the acquisition acquire second finger print information when described in The current brightness value of the light for handling digital reflex in the photosensitive sensor fingerprint induction zone collected, and be stored as marking The step of quasi- brightness value, comprising:
The photosensitive sensor in the preset duration during acquiring second finger print information is obtained to acquire according to predeterminated frequency The fingerprint induction zone in the light for handling digital reflex at least one initial luma values;
Calculate the average value of at least one initial luma values;
The average value is determined as normal brightness value and is stored.
11. the method according to claim 1, wherein the detection photosensitive sensor fingerprint collected Before the step of current brightness value of light through user's finger reflection in induction zone, further includes:
Judge whether the touch operation in fingerprint collecting region matches with preset operational attribute;
If the touch operation is matched with preset operational attribute, the detection photosensitive sensor fingerprint sense collected is executed The step of answering the current brightness value of the light through user's finger reflection in area.
12. the method according to claim 1, wherein the detection photosensitive sensor fingerprint collected Before the step of current brightness value of light through user's finger reflection in induction zone, further includes:
Detect the selection operation to fingerprint recognition program interface entrance;
If detecting the selection operation to fingerprint recognition program interface entrance, executes the detection photosensitive sensor and adopted The step of present intensity value of light through user's finger reflection in the fingerprint induction zone of collection.
13. a kind of mobile terminal, including display screen, the display screen includes underlay substrate, which is characterized in that the mobile terminal It further include photosensitive sensor and fingerprint sensor, the photosensitive sensor is located in the black matrix of the display screen, the fingerprint Sensor is located on the underlay substrate of the display screen, the mobile terminal further include:
Brightness value detection module, for detecting in photosensitive sensor fingerprint induction zone collected through user's finger reflection The current brightness value of light;
Display brightness adjusts module, for adjusting according to the first present intensity value and pre-stored normal brightness value detected The display brightness of the whole mobile terminal;
First finger print information acquisition module, if being controlled for detecting that the second present intensity value is matched with the normal brightness value Fingerprint sensor processed acquires the first finger print information;
Finger print information matching module, for first finger print information to be matched with the second finger print information of preparatory typing, Obtain fingerprint recognition result;Wherein, the normal brightness value are as follows: described in typing when the second finger print information, the photosensitive sensor The current brightness value of light through user's finger reflection in the fingerprint induction zone of acquisition;
The display brightness adjusts module
Difference computational submodule, for calculating the difference between the normal brightness value and the first present intensity value;
Normal backlight grade determines submodule, for the back based on pre-stored brightness value Yu the backlight of the mobile terminal The corresponding relationship of light grade determines the corresponding normal backlight grade of the normal brightness value;
Backlight level adjusting submodule, for it is current bright to adjust described first according to the difference and the normal backlight grade The corresponding backlight level of angle value, until the second present intensity value detected is matched with the normal brightness value.
14. mobile terminal according to claim 13, which is characterized in that the backlight level adjusting submodule includes:
First backlight level adjustment unit, if being greater than the first preset threshold for the difference, by the backlight of the backlight Grade is turned up to the normal backlight grade;
Third present intensity value acquiring unit, for photosensitive sensor fingerprint induction zone collected after acquisition raising backlight level The third present intensity value of the interior light through user's finger reflection;
The first backlight level adjustment unit, if being also used between the normal brightness value and the third present intensity value Difference is still greater than first preset threshold, then improves the backlight etc. of backlight step by step on the basis of the normal backlight grade Grade, until the difference of the normal brightness value and the second present intensity value detected is less than first preset threshold.
15. mobile terminal according to claim 14, which is characterized in that the first backlight level adjustment unit includes:
Backlight level improves subelement step by step, for improving the backlight level of the backlight by the normal backlight grade N To N+1;
Subelement is arranged in first backlight level, and the backlight level for backlight to be arranged is N+1.
16. mobile terminal according to claim 13, which is characterized in that the backlight level adjusting submodule includes:
Second backlight level adjustment unit, if for the difference less than the second preset threshold, by the backlight of the backlight Grade is turned down to the normal backlight grade;
4th present intensity value acquiring unit, for photosensitive sensor fingerprint induction zone collected after acquisition reduction backlight level 4th present intensity value of the interior light through user's finger reflection;
The second backlight level adjustment unit, if being also used between the normal brightness value and the 4th present intensity value Difference then reduces the back of the backlight still less than second preset threshold step by step on the basis of the normal backlight grade Light grade, until the difference of the normal brightness value and the second present intensity value detected is greater than the described second default threshold Value;
Wherein, second preset threshold is negative.
17. mobile terminal according to claim 16, which is characterized in that the second backlight level adjustment unit includes:
Backlight level reduces subelement step by step, for reducing the backlight level of the backlight by the normal backlight grade N To N-1;
Subelement is arranged in second backlight level, and the backlight level for backlight to be arranged is N-1.
18. mobile terminal according to claim 13, which is characterized in that the display screen of the mobile terminal is organic light emission Diode screen, the mobile terminal further include:
Show that image keeps module, if the difference for the normal brightness value and the 5th present intensity value detected is still greater than First preset threshold then keeps the display grayscale of the display image in fingerprint collecting region constant;
Background area determining module, for all image-regions in the display screen in addition to the fingerprint collecting region are true It is set to background area;
Show image replacement module, at least one display image for successively being reduced step by step with display grayscale replaces the background The display image in region, until the normal brightness value is less than described the with the difference of the second present intensity value detected One preset threshold.
19. mobile terminal according to claim 18, which is characterized in that the display image replacement module includes:
Show that grayscale reduces submodule, for reducing the current display grayscale in the background area;
6th present intensity value acquisition submodule, the photosensitive sensor institute after the display grayscale for obtaining background area reduces 6th present intensity value of the light through user's finger reflection in the fingerprint induction zone of acquisition;
The display grayscale reduces submodule, if being also used to the difference of the normal brightness value and the 6th present intensity value still Greater than first preset threshold, then described the step of reducing the current display grayscale in the background area is executed, until described Normal brightness value and the difference of the second present intensity value detected are less than first preset threshold.
20. mobile terminal according to claim 19, it is characterised in that:
The display grayscale reduces submodule, specifically for replacing the first display image of the current M grayscale in the background area It is changed to the second display image of M-1 grayscale.
21. mobile terminal according to claim 13, which is characterized in that the mobile terminal further include:
Second finger print information obtains module, in the detection photosensitive sensor fingerprint induction zone collected through with Before the step of current brightness value of the light of family finger reflection, the second fingerprint letter of the fingerprint sensor acquisition is obtained Breath;
Normal brightness value memory module acquires the photosensitive sensor institute collected when second finger print information for obtaining The current brightness value of the light for handling digital reflex in fingerprint induction zone is stated, and is stored as normal brightness value.
22. mobile terminal according to claim 21, which is characterized in that the normal brightness value memory module includes:
Initial luma values acquisition submodule, for obtaining the light in the preset duration during acquiring second finger print information At least one for the light for handling digital reflex in the fingerprint induction zone that dependent sensor is acquired according to predeterminated frequency is initial bright Angle value;
Mean value calculation submodule, for calculating the average value of at least one initial luma values;
Normal brightness value determines submodule, for the average value to be determined as normal brightness value and is stored.
23. mobile terminal according to claim 13, which is characterized in that the mobile terminal further include:
Operational attribute judgment module, for detecting in the photosensitive sensor fingerprint induction zone collected described through user hand Before the step of current brightness value of the light of digital reflex, judge touch operation in fingerprint collecting region whether with it is preset Operational attribute matching;
The brightness value detection module is also used to when the touch operation is matched with preset operational attribute, executes detection institute The step of stating the current brightness value of the light through user's finger reflection in photosensitive sensor fingerprint induction zone collected.
24. mobile terminal according to claim 13, which is characterized in that the mobile terminal further include:
Selection operation detection module, for detecting in the photosensitive sensor fingerprint induction zone collected described through user hand Before the step of current brightness value of the light of digital reflex, the selection operation to fingerprint recognition program interface entrance is detected;
The brightness value detection module is also used to when detecting the selection operation to fingerprint recognition program interface entrance, is executed The present intensity value of light through user's finger reflection in the detection photosensitive sensor fingerprint induction zone collected Step.
25. a kind of mobile terminal, which is characterized in that including processor, memory and be stored on the memory and can be in institute State the computer program run on processor, when the computer program is executed by the processor realize as claim 1 to The step of fingerprint identification method described in any one of 12.
CN201710600379.3A 2017-07-21 2017-07-21 A kind of fingerprint identification method and mobile terminal CN107295195B (en)

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CN108596124A (en) * 2018-04-28 2018-09-28 京东方科技集团股份有限公司 Fingerprint recognition panel, fingerprint identification method and display device
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CN108898126A (en) * 2018-07-11 2018-11-27 北京小米移动软件有限公司 Fingerprint identification method and device
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