CN106778707B - Fingerprint identification method, display screen and mobile terminal - Google Patents
Fingerprint identification method, display screen and mobile terminal Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72463—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions to restrict the functionality of the device
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- H04M—TELEPHONIC COMMUNICATION
- H04M2203/00—Aspects of automatic or semi-automatic exchanges
- H04M2203/60—Aspects of automatic or semi-automatic exchanges related to security aspects in telephonic communication systems
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Abstract
The invention is applicable to the field of fingerprint identification, and provides a fingerprint identification method, a display screen and a mobile terminal. The method comprises the following steps: acquiring position information of a finger of a user; when the relative position of the position information of the user finger and the fingerprint area meets a preset condition, increasing the light intensity reflected to the user finger; and collecting the fingerprint of the user finger and identifying the collected fingerprint. By the method, the accuracy of fingerprint identification can be improved.
Description
Technical Field
The embodiment of the invention belongs to the field of fingerprint identification, and particularly relates to a fingerprint identification method, a display screen and a mobile terminal.
Background
The fingerprints of people have the advantages of lifelong invariance, uniqueness and convenience, and are almost the pronouns of biometric identification, and fingerprint identification refers to identifying different fingerprints by comparing minutiae characteristic points of different fingerprints.
The existing fingerprint identification method generally comprises the following steps: and collecting the fingerprints, comparing the collected fingerprints with the stored fingerprints, judging that the two fingerprints are the same if the collected fingerprints are the same as the stored fingerprints, and otherwise, judging that the two fingerprints are different. However, since the collected fingerprint information may be wrong, the determination result is also wrong.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the invention provides a fingerprint identification method, a display screen and a mobile terminal, and aims to solve the problem that the existing method is low in identification accuracy when an acquired fingerprint is identified.
In a first aspect of the embodiments of the present invention, a fingerprint identification method is provided, where the method includes:
acquiring position information of a finger of a user;
when the relative position of the position information of the user finger and the fingerprint area meets a preset condition, increasing the light intensity reflected to the user finger;
and collecting the fingerprint of the user finger and identifying the collected fingerprint.
In a second aspect of the embodiments of the present invention, a display screen is provided, where the display screen includes a fingerprint area and a backlight module;
and when the position information of the finger of the user and the relative position of the fingerprint area meet a preset condition, enlarging the light source of the backlight module to enlarge the light intensity reflected to the finger of the user.
In a third aspect of the embodiments of the present invention, a mobile terminal is provided, where the mobile terminal includes: the device comprises a display screen, a shell and a processor;
the processor is used for acquiring the position information of the finger of the user, increasing the light intensity reflected to the finger of the user when the position information of the finger of the user and the relative position of the fingerprint area meet a preset condition, collecting the fingerprint of the finger of the user, and identifying the collected fingerprint.
In the embodiment of the invention, the light intensity reflected to the user finger is increased, so that the collected fingerprint of the user finger is clearer, and the accuracy of fingerprint identification is further improved.
Drawings
FIG. 1 is a flowchart of a fingerprint recognition method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a fingerprint area provided on a display screen of a terminal according to a first embodiment of the present invention;
fig. 3 is a block diagram of a fingerprint recognition terminal according to a second embodiment of the present invention;
fig. 4 is a block diagram of a part of a mobile terminal related handset according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment of the invention, the position information of the finger of the user is acquired, when the relative position of the position information of the finger of the user and the fingerprint area meets the preset condition, the light intensity reflected to the finger of the user is increased, the fingerprint of the finger of the user is collected, and the collected fingerprint is identified.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
The first embodiment is as follows:
fig. 1 shows a flowchart of a fingerprint identification method according to a first embodiment of the present invention, which is detailed as follows:
in step S11, position information of the user' S finger is acquired.
Specifically, when the motion state (e.g., motion trajectory) of the terminal satisfies a condition, it is detected whether the display screen of the terminal includes information of the user's finger, and if so, the position information of the user's finger is acquired. Of course, it may also be detected whether the information of the user's finger is included on the display screen of the terminal when the interval time arrives, which is not limited herein.
Wherein, the position information of the user finger includes: information on the relative position of the user's finger to the display screen, e.g., whether it is above the display screen, whether it is on the display screen, etc.
And step S12, when the relative position of the position information of the user finger and the fingerprint area meets the preset condition, increasing the light intensity reflected to the user finger.
As shown in fig. 2, the fingerprint Area is disposed on the display screen of the terminal, for example, in one of the Active Area (AA) of the display screen.
Optionally, the step S12 specifically includes:
a1, judging whether the finger of the user is hovering above the fingerprint area or not, or judging whether the finger of the user touches the fingerprint area or not. Hovering here refers to a state where a user's finger remains for a while just above a fingerprint area without touching the fingerprint area.
And A2, when the finger of the user is hovered above the fingerprint area, or when the finger of the user touches the fingerprint area, judging that the relative position of the position information of the finger of the user and the fingerprint area meets the preset condition.
A3, increasing the intensity of the light reflected to the user's finger.
It should be noted that, if the user finger does not hover above the fingerprint area or touch the fingerprint area, but the user finger is determined to be continuously close to the fingerprint area, it is also determined that the relative position between the position information of the user finger and the fingerprint area satisfies the preset condition.
Further, the determining whether the user's finger hovers above the fingerprint area in a1 specifically includes:
and A11, judging whether the projection of the finger of the user is on the fingerprint area. Specifically, it is determined whether the shape and area of the projection detected on the fingerprint region satisfy the determination criterion of the user's finger. The judgment criterion of the user finger includes the shape, area and the like of the user finger. Specifically, it is determined whether the shape of the projection on the fingerprint region is an elliptical elongated shape, whether the area of the projection on the fingerprint region is smaller than a preset area, and the like.
A12, when the projection of the user finger is on the fingerprint area, judging whether the area of the projection of the user finger changes within a preset time length, and when the area of the projection of the user finger does not change within the preset time length, judging that the user finger hovers above the fingerprint area, otherwise, judging that the user finger does not hover above the fingerprint area. It should be noted that, when the projected area of the finger of the user changes within the preset time period, but the change is smaller than the change threshold, it is also determined that the projected area of the finger of the user does not change within the preset time period.
Further, the light intensity reflected to the finger of the user is increased in 2 ways, and at this time, the a3 specifically includes:
a31, increasing the light intensity of the fingerprint area to a specified light intensity to increase the light intensity reflected to the finger of the user. Specifically, the OLED in the fingerprint area is lightened or the light intensity in the fingerprint area is increased until the light intensity in the fingerprint area is increased to the specified light intensity, so that the light intensity reflected by the fingerprint can be increased, and the probability of acquiring the accurate fingerprint subsequently is improved. Wherein the specified light intensity should be greater than 500cd, preferably 600 cd.
Or,
and A32, increasing the light intensity of the fingerprint area and/or decreasing the light intensity of the non-fingerprint area in the display screen, so that the contrast of the light intensity of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased. When the light intensity contrast of the fingerprint area and the non-fingerprint area is increased, for example, the contrast of the fingerprint area and the non-fingerprint area is larger than the preset contrast, the light intensity of the fingerprint reflected to the finger of the user can be highlighted.
Further, whether the light intensity of the fingerprint region and the light intensity of the non-fingerprint region are adjusted simultaneously can be selected according to the current light intensity of the fingerprint region, and at this time, the a32 specifically includes:
and A321, judging whether the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value.
And A322, when the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value, reducing the light intensity of a non-fingerprint area in the display screen, so that the light intensity contrast ratio of the fingerprint area and the non-fingerprint area meets the preset contrast ratio, and increasing the light intensity reflected to the finger of the user. When the light intensity of the fingerprint area is larger than or equal to the preset light intensity threshold value, the current light intensity of the fingerprint area is larger, and at the moment, the light intensity of the non-fingerprint area in the display screen can be reduced, so that the resource waste caused by increasing the light intensity of the fingerprint area is avoided.
And A323, when the light intensity of the fingerprint area is smaller than a preset light intensity threshold value, increasing the light intensity of the fingerprint area, or simultaneously decreasing the light intensity of the fingerprint area and the light intensity of the non-fingerprint area in the display screen, so that the light intensity contrast ratio of the fingerprint area and the light intensity contrast ratio of the non-fingerprint area meet the preset contrast ratio, and the light intensity reflected to the finger of the user is increased. Specifically, the adjustable light intensity range of the fingerprint region may be preset, and the adjustable light intensity range of the non-fingerprint region may be preset, such that the light intensity of the fingerprint region is adjusted within the adjustable light intensity range of the fingerprint region, and the light intensity of the non-fingerprint region is adjusted within the adjustable light intensity range of the non-fingerprint region, until the light intensity contrast of the fingerprint region and the non-fingerprint region satisfies the preset contrast.
And step S13, collecting the fingerprint of the user finger, and identifying the collected fingerprint.
Specifically, the collected fingerprint is compared with the pre-stored fingerprint, if the collected fingerprint is matched with the pre-stored fingerprint, the fingerprint identification is successful, otherwise, the fingerprint identification is failed. Optionally, when the fingerprint identification fails, a fingerprint identification failure prompt is sent, for example, a prompt of voice or text is sent.
In the first embodiment of the invention, the position information of the finger of the user is acquired, when the relative position of the position information of the finger of the user and the fingerprint area meets the preset condition, the light intensity reflected to the finger of the user is increased, the fingerprint of the finger of the user is collected, and the collected fingerprint is identified. Because the light intensity reflected to the finger of the user is increased, clear fingerprint images can be acquired through the optical fingerprint sensor arranged in the terminal display screen, the acquired fingerprint images can be accurately identified, and therefore the accuracy of fingerprint identification is improved.
It should be understood that, in the embodiment of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.
Example two:
fig. 3 shows a block diagram of a fingerprint recognition terminal according to a second embodiment of the present invention, which may be applied to a terminal that may include user equipment communicating with one or more core networks via a radio access network RAN, which may be a mobile phone (or "cellular" phone), a computer with mobile equipment, etc., which may also be a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, for example, that exchanges voice and/or data with the radio access network. Also for example, the mobile device may include a smartphone, a tablet computer, a Personal Digital Assistant (PDA), a point-of-sale (POS) or a vehicle-mounted computer, etc. For convenience of explanation, only portions related to the embodiments of the present invention are shown.
This fingerprint identification terminal includes: a position information acquisition unit 31, a light intensity increasing unit 32 and a fingerprint acquisition unit 33. Wherein:
a position information acquiring unit 31 for acquiring position information of the user's finger.
Specifically, when the motion state (e.g., motion trajectory) of the terminal satisfies a condition, it is detected whether the display screen of the terminal includes information of the user's finger, and if so, the position information of the user's finger is acquired. Of course, it may also be detected whether the information of the user's finger is included on the display screen of the terminal when the interval time arrives, which is not limited herein.
Wherein, the position information of the user finger includes: information on the relative position of the user's finger to the display screen, e.g., whether it is above the display screen, whether it is on the display screen, etc.
And a light intensity increasing unit 32 for increasing the light intensity reflected to the user's finger when the relative position of the position information of the user's finger and the fingerprint area satisfies a preset condition.
Optionally, the light intensity enlarging unit 32 includes:
and the user finger and fingerprint area relative position judging module is used for judging whether the user finger hovers above the fingerprint area or not, or judging whether the user finger touches the fingerprint area or not, and judging whether the position information of the user finger and the relative position of the fingerprint area meet the preset condition when the user finger hovers above the fingerprint area or touch the fingerprint area. Hovering here refers to a state where a user's finger remains for a while just above a fingerprint area without touching the fingerprint area.
And the light intensity increasing module is used for increasing the light intensity reflected to the finger of the user.
It should be noted that, if the user finger does not hover above the fingerprint area or touch the fingerprint area, but the user finger is determined to be continuously close to the fingerprint area, it is also determined that the relative position between the position information of the user finger and the fingerprint area satisfies the preset condition.
Optionally, the module for determining the relative position of the user's finger and the fingerprint area includes:
and the finger projection position judging module is used for judging whether the projection of the finger of the user is on the fingerprint area. Specifically, it is determined whether the shape and area of the projection detected on the fingerprint region satisfy the determination criterion of the user's finger. The judgment criterion of the user finger includes the shape, area and the like of the user finger. Specifically, it is determined whether the shape of the projection on the fingerprint region is an elliptical elongated shape, whether the area of the projection on the fingerprint region is smaller than a preset area, and the like.
And the area change judging module for the user projection is used for judging whether the projected area of the user finger changes within the preset time length when the projection of the user finger is on the fingerprint area, judging that the user finger hovers above the fingerprint area when the projected area of the user finger does not change within the preset time length, and otherwise, judging that the user finger does not hover above the fingerprint area. It should be noted that, when the projected area of the finger of the user changes within the preset time period, but the change is smaller than the change threshold, it is also determined that the projected area of the finger of the user does not change within the preset time period.
Optionally, the module for increasing light intensity reflected by the finger includes:
and the appointed light intensity adjusting module is used for increasing the light intensity of the fingerprint area to appointed light intensity so as to increase the light intensity reflected to the finger of the user. Specifically, the OLED in the fingerprint area is lightened or the light intensity in the fingerprint area is increased until the light intensity in the fingerprint area is increased to the specified light intensity, so that the light intensity reflected by the fingerprint can be increased, and the probability of acquiring the accurate fingerprint subsequently is improved. Wherein the specified light intensity should be greater than 500cd, preferably 600 cd.
Or,
and the dynamic light intensity adjusting module is used for increasing the light intensity of the fingerprint area and/or decreasing the light intensity of the non-fingerprint area in the display screen, so that the contrast ratio of the light intensity of the fingerprint area and the light intensity of the non-fingerprint area meets the preset contrast ratio, and the light intensity reflected to the finger of the user is increased.
Further, the dynamic light intensity adjustment module comprises:
and the light intensity size judging module is used for judging whether the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value or not.
And the non-fingerprint area light intensity reducing module is used for reducing the light intensity of the non-fingerprint area in the display screen when the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value, so that the light intensity contrast ratio of the fingerprint area and the non-fingerprint area meets the preset contrast ratio, and the light intensity reflected to the finger of the user is increased.
The light intensity adjusting module of the display screen is used for increasing the light intensity of the fingerprint area when the light intensity of the fingerprint area is smaller than a preset light intensity threshold value, or decreasing the light intensity of the fingerprint area and the light intensity of the non-fingerprint area in the display screen simultaneously, so that the light intensity contrast of the fingerprint area and the light intensity contrast of the non-fingerprint area meet the preset contrast, and the light intensity reflected to the finger of the user is increased. Specifically, the adjustable light intensity range of the fingerprint region may be preset, and the adjustable light intensity range of the non-fingerprint region may be preset, such that the light intensity of the fingerprint region is adjusted within the adjustable light intensity range of the fingerprint region, and the light intensity of the non-fingerprint region is adjusted within the adjustable light intensity range of the non-fingerprint region, until the light intensity contrast of the fingerprint region and the non-fingerprint region satisfies the preset contrast.
And a fingerprint collecting unit 33 for collecting the fingerprint of the user's finger and identifying the collected fingerprint.
In the second embodiment of the invention, because the light intensity reflected to the user finger is increased, the collected fingerprint of the user finger is clearer, and the accuracy of fingerprint identification is further improved.
Example three:
fig. 4 is a block diagram showing a partial structure of a cellular phone related to a mobile terminal provided by a third embodiment of the present invention. Referring to fig. 4, the handset includes: radio Frequency (RF) circuitry 410, memory 420, input unit 430, display unit 440, sensor 450, audio circuitry 460, wireless module 470, processor 480, and power supply 490. Those skilled in the art will appreciate that the handset configuration shown in fig. 4 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile phone in detail with reference to fig. 4:
the RF circuit 410 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 480; in addition, the data for designing uplink is transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 410 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.
The memory 420 may be used to store software programs and modules, and the processor 480 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 420. The memory 420 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone 400. Specifically, the input unit 430 may include a touch panel 431 and other input devices 432. The touch panel 431, also called a touch screen, may collect touch operations of a user on or near the touch panel 431 (e.g., operations of the user on or near the touch panel 431 using any suitable object or accessory such as a finger or a stylus) and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 431 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 480, and receives and executes commands sent from the processor 480. In addition, the touch panel 431 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 430 may include other input devices 432 in addition to the touch panel 431. In particular, other input devices 432 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 440 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The display unit 440 may include a display panel 441, and optionally, the display panel 441 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 431 may cover the display panel 441, and when the touch panel 431 detects a touch operation on or near the touch panel 431, the touch panel is transmitted to the processor 480 to determine the type of the touch event, and then the processor 480 provides a corresponding visual output on the display panel 441 according to the type of the touch event. Although the touch panel 431 and the display panel 441 are shown in fig. 4 as two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 431 and the display panel 441 may be integrated to implement the input and output functions of the mobile phone.
The cell phone 400 can also include at least one sensor 450, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 441 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 441 and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The wireless module is based on short-distance wireless transmission technology, and the mobile phone can help the user to send and receive e-mails, browse webpages, access streaming media and the like through the wireless module 470, and provides wireless broadband internet access for the user. Although fig. 4 shows the wireless module 470, it is understood that it does not belong to the essential constitution of the cellular phone 400 and can be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 480 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 420 and calling data stored in the memory 420, thereby integrally monitoring the mobile phone. Optionally, processor 480 may include one or more processing units; preferably, the processor 480 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 480.
The handset 400 also includes a power supply 490 (e.g., a battery) for powering the various components, which may preferably be logically connected to the processor 480 via a power management system to manage charging, discharging, and power consumption via the power management system.
Although not shown, the mobile phone 400 may further include a camera, a bluetooth module, and the like, which will not be described herein.
In this embodiment of the present invention, the processor 480 included in the terminal further has the following functions: a method of fingerprinting, the method comprising:
acquiring position information of a finger of a user;
when the relative position of the position information of the user finger and the fingerprint area meets a preset condition, increasing the light intensity reflected to the user finger;
and collecting the fingerprint of the user finger and identifying the collected fingerprint.
Further, when the position information of the user finger and the relative position of the fingerprint area satisfy the preset condition, the light intensity reflected to the user finger is increased, and the method specifically comprises the following steps:
judging whether a finger of a user is suspended above the fingerprint area or not, or judging whether the finger of the user touches the fingerprint area or not, and judging that the position information of the finger of the user and the relative position of the fingerprint area meet a preset condition when the finger of the user is suspended above the fingerprint area or the finger of the user touches the fingerprint area;
the intensity of the light reflected to the user's finger is increased.
Further, the determining whether the finger of the user hovers above the fingerprint area specifically includes:
judging whether the projection of the finger of the user is on the fingerprint area;
when the projection of the user finger is on the fingerprint area, judging whether the projected area of the user finger changes within a preset time length, and when the projected area of the user finger does not change within the preset time length, judging that the user finger hovers above the fingerprint area, otherwise, judging that the user finger does not hover above the fingerprint area.
Further, the increasing the light intensity reflected to the user's finger specifically includes:
increasing the light intensity of the fingerprint area to a specified light intensity so as to increase the light intensity reflected to the finger of the user;
or,
and increasing the light intensity of the fingerprint area and/or decreasing the light intensity of the non-fingerprint area in the display screen, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased.
Further, the increasing of the light intensity of the fingerprint area and/or the decreasing of the light intensity of the non-fingerprint area in the display screen enable the light intensity contrast of the fingerprint area and the non-fingerprint area to meet a preset contrast, so as to increase the light intensity reflected to the finger of the user, and specifically include:
judging whether the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value or not;
when the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value, reducing the light intensity of a non-fingerprint area in the display screen, and enabling the light intensity contrast of the fingerprint area and the non-fingerprint area to meet the preset contrast so as to increase the light intensity reflected to the finger of the user;
when the light intensity of the fingerprint area is smaller than a preset light intensity threshold value, the light intensity of the fingerprint area is increased, or the light intensities of the fingerprint area and a non-fingerprint area in the display screen are decreased simultaneously, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased.
Example four:
a fourth embodiment of the present invention provides a display screen, where the display screen includes a fingerprint area and a backlight module. The fingerprint Area is arranged on a display screen of the terminal, and is arranged above a backlight module of a certain Area in an effective display Area (active Area, AA) of the display screen.
When the position information of the finger of the user and the relative position of the fingerprint area meet the preset condition, the backlight module is right opposite to the light intensity enhancement of the light source of the fingerprint area so as to facilitate fingerprint collection and identification in the fingerprint area. Wherein, the position information of the user finger includes: information on the relative position of the user's finger to the display screen, e.g., whether it is above the display screen, whether it is on the display screen, etc. When the finger of the user is hovered above the fingerprint area or touches the fingerprint area, the relative position of the position information of the finger of the user and the fingerprint area is judged to meet the preset condition.
Optionally, the fingerprint area is disposed above the backlight module of the display screen. Specifically, if the display screen provided by the embodiment of the present invention is disposed on the terminal, and the terminal is divided into an area right above and an area right below the display screen, the area below the display screen refers to an area right below the terminal, and in order to facilitate fast acquisition of a fingerprint, the fingerprint area may be disposed in the area below the display screen. Of course, the size of the fingerprint area can be set according to actual conditions.
Optionally, the fingerprint area is provided with an optical fingerprint sensor. Specifically, an optical fingerprint sensor is arranged below the fingerprint area and used for acquiring the fingerprint of the finger of the user after the light intensity reflected to the finger of the user is increased.
Optionally, the light source of the backlight module includes: organic Light-emitting diodes (UIV OLEDs, OLEDs) or Light-emitting diodes (LCDs). Of course, the light source of the backlight module may also be a Light Emitting Diode (LED).
In addition, an embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes: the display screen and the processor are located in the shell. Wherein:
the processor is used for acquiring the position information of the finger of the user, increasing the light intensity reflected to the finger of the user when the position information of the finger of the user and the relative position of the fingerprint area meet a preset condition, collecting the fingerprint of the finger of the user, and identifying the collected fingerprint. The specific processing procedure is the same as that of the first embodiment, and is not described herein again.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A method of fingerprint identification, the method comprising:
acquiring position information of a finger of a user, wherein the position information of the finger of the user comprises: relative position information of a user finger and the display screen;
when the relative position of the position information of the user finger and the fingerprint area meets a preset condition, the light intensity reflected to the user finger is increased, and therefore the probability of acquiring an accurate fingerprint is improved;
collecting the fingerprint of the user finger through an optical fingerprint sensor, and identifying the collected fingerprint;
the increasing of the light intensity reflected to the user finger specifically comprises:
the light intensity of the fingerprint area is increased to the appointed light intensity so as to increase the light intensity reflected to the finger of the user, and the method specifically comprises the following steps: lightening an OLED (organic light emitting diode) in the fingerprint area or increasing the light intensity of the fingerprint area until the light intensity of the fingerprint area is increased to the specified light intensity;
or,
the light intensity of the fingerprint area is increased and/or the light intensity of the non-fingerprint area in the display screen is decreased, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased;
the regional light intensity of non-fingerprint in the fingerprint region and/or the turn down display screen of increaseing for the regional light intensity contrast of fingerprint satisfies predetermined contrast with the regional light intensity contrast of non-fingerprint, with the light intensity of reflection to user's finger of increaseing, specifically includes: judging whether the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value or not; when the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value, reducing the light intensity of a non-fingerprint area in the display screen, and enabling the light intensity contrast of the fingerprint area and the non-fingerprint area to meet the preset contrast so as to increase the light intensity reflected to the finger of the user; when the light intensity of the fingerprint area is smaller than a preset light intensity threshold value, the light intensity of the fingerprint area is increased, or the light intensities of the fingerprint area and a non-fingerprint area in the display screen are decreased simultaneously, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased.
2. The method according to claim 1, wherein when the relative position between the position information of the user's finger and the fingerprint area satisfies a preset condition, the increasing of the light intensity reflected to the user's finger specifically comprises:
judging whether a finger of a user is suspended above the fingerprint area or not, or judging whether the finger of the user touches the fingerprint area or not, and judging that the position information of the finger of the user and the relative position of the fingerprint area meet a preset condition when the finger of the user is suspended above the fingerprint area or the finger of the user touches the fingerprint area;
the intensity of the light reflected to the user's finger is increased.
3. The method according to claim 2, wherein the determining whether the user's finger hovers above the fingerprint area includes:
judging whether the projection of the finger of the user is on the fingerprint area;
when the projection of the user finger is on the fingerprint area, judging whether the projected area of the user finger changes within a preset time length, and when the projected area of the user finger does not change within the preset time length, judging that the user finger hovers above the fingerprint area, otherwise, judging that the user finger does not hover above the fingerprint area.
4. A display screen is characterized by comprising a fingerprint area and a backlight module;
the fingerprint area is provided with an optical fingerprint sensor;
when the relative position of the position information of the finger of the user and the fingerprint area meets a preset condition, the backlight module is over against the light intensity enhancement of the light source of the fingerprint area so as to facilitate the fingerprint acquisition and identification of the fingerprint area, thereby improving the probability of acquiring an accurate fingerprint; wherein the position information of the user's finger includes: relative position information of a user finger and the display screen;
backlight unit is just right the light intensity reinforcing of the regional light source of fingerprint specifically includes:
the light intensity of the fingerprint area is increased to the appointed light intensity so as to increase the light intensity reflected to the finger of the user, and the method specifically comprises the following steps: lightening an OLED (organic light emitting diode) in the fingerprint area or increasing the light intensity of the fingerprint area until the light intensity of the fingerprint area is increased to the specified light intensity;
or,
the light intensity of the fingerprint area is increased and/or the light intensity of the non-fingerprint area in the display screen is decreased, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased;
the regional light intensity of non-fingerprint in the fingerprint region and/or the turn down display screen of increaseing for the regional light intensity contrast of fingerprint satisfies predetermined contrast with the regional light intensity contrast of non-fingerprint, with the light intensity of reflection to user's finger of increaseing, specifically includes: judging whether the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value or not; when the light intensity of the fingerprint area is greater than or equal to a preset light intensity threshold value, reducing the light intensity of a non-fingerprint area in the display screen, and enabling the light intensity contrast of the fingerprint area and the non-fingerprint area to meet the preset contrast so as to increase the light intensity reflected to the finger of the user; when the light intensity of the fingerprint area is smaller than a preset light intensity threshold value, the light intensity of the fingerprint area is increased, or the light intensities of the fingerprint area and a non-fingerprint area in the display screen are decreased simultaneously, so that the light intensity contrast of the fingerprint area and the non-fingerprint area meets the preset contrast, and the light intensity reflected to the finger of the user is increased.
5. A display screen according to claim 4, wherein the fingerprint area is provided above a backlight module of the display screen.
6. A display screen according to claim 4, wherein the light source of the backlight module comprises an organic light emitting diode or a light emitting diode.
7. A mobile terminal, characterized in that the mobile terminal comprises: the device comprises a display screen, a shell and a processor;
the processor for implementing the steps of the method according to any one of claims 1 to 3.
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