CN107729846B - Fingerprint identification method and mobile terminal - Google Patents
Fingerprint identification method and mobile terminal Download PDFInfo
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- CN107729846B CN107729846B CN201710985132.8A CN201710985132A CN107729846B CN 107729846 B CN107729846 B CN 107729846B CN 201710985132 A CN201710985132 A CN 201710985132A CN 107729846 B CN107729846 B CN 107729846B
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- dynamic gain
- color combination
- fingerprint identification
- mobile terminal
- adjacent pixels
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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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
Abstract
The invention provides a fingerprint identification method and a mobile terminal.A sensing voltage is generated based on the light energy reflected by a finger of a user when the user touches a touch screen, wherein the light is the light emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of an amplifier corresponding to a color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image. Therefore, when the mobile terminal realizes the fingerprint identification function, the mobile terminal can realize multi-color display, and the display effect of the mobile terminal is ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a fingerprint identification method and a mobile terminal.
Background
At present, the screen fingerprint identification function is more and more commonly used on the mobile terminal, such as unlocking, payment and the like.
As shown in fig. 1 and 2, when a finger of a mobile terminal user touches a fingerprint identification area of a touch screen of the mobile terminal, light emitted by the touch screen is reflected by different optical paths of peaks and troughs of the finger fingerprint of the user, and is received by a light fingerprint identification module arranged on the touch screen through a light receiving hole arranged between adjacent pixels of the touch screen, so that a fingerprint identification image is formed, and finally, a screen fingerprint identification function is realized through a corresponding algorithm.
At present prior art, the color that sends light when the adjacent pixel in light receiving hole both sides is different promptly, the formation of image effect on light fingerprint identification module is different, light fingerprint identification module can't carry out automatically regulated to the gain parameter of the amplifier that corresponds when receiving mixed light of multiple color, thereby can't form accurate fingerprint identification image, therefore, prior art is when realizing the fingerprint identification function, mobile terminal touch screen fingerprint identification region only shows a certain color in order to ensure can accurately to acquire the fingerprint identification image, it is single to lead to mobile terminal to show the color when realizing the fingerprint identification function, mobile terminal display effect has been influenced.
Disclosure of Invention
The invention provides a fingerprint identification method and a mobile terminal, and aims to solve the problems that in the prior art, when the fingerprint identification function of the mobile terminal is realized, the display color is single, and the display effect is deficient.
In one aspect, an embodiment of the present invention provides a fingerprint identification method, which is applied to a mobile terminal, where the mobile terminal includes a touch screen, and the touch screen includes a light receiving hole disposed between two adjacent pixels; the method specifically comprises the following steps:
when a user touches the touch screen, generating an induced voltage based on light energy reflected by a finger of the user, wherein the light is emitted by two adjacent pixels;
acquiring color combinations of light rays emitted by two adjacent pixels;
determining a dynamic gain parameter of the amplifier corresponding to the color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter;
generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter;
and performing fingerprint identification based on the fingerprint identification image.
On the other hand, the embodiment of the invention also provides a mobile terminal, which comprises a touch screen, wherein the touch screen comprises a light receiving hole arranged between two adjacent pixels; the mobile terminal may further include:
the first generation module is used for generating induction voltage based on light energy reflected by a finger of a user when the user touches the touch screen, wherein the light is light emitted by two adjacent pixels;
the acquisition module is used for acquiring the color combination of the light rays emitted by two adjacent pixels;
the determining module is used for determining the dynamic gain parameters of the amplifier corresponding to the color combination acquired by the acquiring module based on the corresponding relation between the color combination and the dynamic gain parameters which are established in advance;
the second generation module is used for generating a fingerprint identification image based on the induced voltage generated by the first generation module and the dynamic gain parameter determined by the determination module;
and the identification module is used for carrying out fingerprint identification on the basis of the fingerprint identification image generated by the second generation module.
On the other hand, an embodiment of the present invention further provides a mobile terminal, including: a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the fingerprint identification method provided by the embodiments of the present invention described above.
On the other hand, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the fingerprint identification method provided in the embodiment of the present invention.
In this way, according to the fingerprint identification method and the mobile terminal provided by the embodiment of the invention, when a user touches the touch screen, the sensing voltage is generated based on the light energy reflected by the finger of the user, and the light is the light emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of an amplifier corresponding to a color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image. Therefore, when the mobile terminal realizes the fingerprint identification function, the mobile terminal can realize multi-color display, and the display effect of the mobile terminal is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mobile terminal in the prior art;
FIG. 2 is a second schematic diagram of a mobile terminal according to the prior art;
FIG. 3 is a flowchart illustrating a fingerprint recognition method according to an embodiment of the present invention;
FIG. 4 is a second flowchart illustrating a fingerprint identification method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a second schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an establishment module in the mobile terminal according to the embodiment of the present invention;
fig. 8 is a third schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 9 is a fourth schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 10 is a fifth schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
An embodiment of the present invention provides a fingerprint identification method, which is applied to a mobile terminal, where the mobile terminal includes a touch screen, and the touch screen includes a light receiving hole (specifically, as shown in fig. 1 and 2) disposed between two adjacent pixels.
As shown in fig. 3, the method may specifically include:
step 301, when a user touches the touch screen, an induced voltage is generated based on light energy reflected by a finger of the user, and the light is emitted by two adjacent pixels.
When the mobile terminal realizes the fingerprint identification function, a preset area in a touch screen of the mobile terminal is a fingerprint identification area, and when a user touches the fingerprint identification area by using a finger and other parts, an image in the fingerprint identification areaThe light emitted by the elements is reflected by different optical paths of wave crests and wave troughs of the finger fingerprint of a user, and is received by a light fingerprint identification module arranged on the touch screen through a light receiving hole arranged between adjacent pixels of the touch screen, and the fingerprint identification module can be internally provided with devices such as a photosensitive diode, an amplifier, an analog-digital voltage converter and the like, and generates an induction voltage V by inducing the energy of the received lightinAnd generates an identification voltage V after being amplified by an amplifier according to a dynamic gain parameter noutAnd then, obtaining light energy data through Analog-to-Digital Converter (ADC) and other processing, thereby forming a fingerprint identification image, and finally realizing a screen fingerprint identification function through a corresponding algorithm.
In the embodiment of the invention, the touch screen fingerprint identification area can realize multi-color display, namely the colors of the light rays emitted by two adjacent pixels can be the same or different.
The touch screen according to the embodiment of the invention may be an Organic Light-Emitting Diode (OLED) touch screen, and the like, and the embodiment of the invention is not particularly limited.
The structure of the fingerprint identification module according to the embodiment of the present invention may be the same as that of the prior art, and will not be described herein again.
Step 302, obtain the color combination of the light emitted by two adjacent pixels.
The color combination according to the embodiment of the present invention may be a combination of colors of light emitted from adjacent pixels disposed at both sides of a light receiving hole. For example, if the color of light emitted by a pixel at the upper side of a light receiving hole is red and the color of light emitted by a pixel at the lower side of the light receiving hole is blue, the combination of red and blue is the color combination of light emitted by the two adjacent pixels.
Step 303, determining the dynamic gain parameter of the amplifier corresponding to the color combination based on the pre-established correspondence between the color combination and the dynamic gain parameter.
In order to ensure that the fingerprint identification area of the touch screen of the mobile terminal realizes multiple colorsThe fingerprint identification image and the induced voltage V can be correctly generated during color displayinThe identification voltage V is generated after being amplified by the amplifieroutThe level value is required to be larger than or equal to the preset threshold level value Vr, so that the level requirement in fingerprint identification can be met. Therefore, the final set value of the dynamic gain parameter n of the amplifier is adjusted to identify the voltage V in the embodiment of the inventionoutAnd the level requirement in fingerprint identification is met.
Since the light energy reflected by the finger of the user is related to the color of the light, and the light passing through a light receiving hole includes light emitted from different pixels disposed at both sides of the light receiving hole, the color combination of light emitted from adjacent pixels at both sides of the light receiving hole determines the energy of the light passing through the light receiving hole, i.e., determines the induced voltage V generated based on the light energyin。
Therefore, in the embodiment of the invention, the corresponding relationship between the color combination of the light rays emitted by two adjacent pixels and the dynamic gain parameter n of the amplifier can be pre-established, so that when the touch screen fingerprint identification area realizes multi-color display, the color combination of the light rays emitted by two adjacent pixels at two sides of a light receiving hole is only needed to be obtained, the dynamic gain parameter n of the amplifier corresponding to the color combination can be determined by inquiring the pre-established corresponding relationship between the color combination and the dynamic gain parameter n, and the amplifier can be controlled to sense the voltage V subsequentlyinAmplifying the obtained dynamic gain parameter n according to the query to generate an identification voltage V meeting the requirement of the fingerprint identification levelout。
In an embodiment, before generating the induced voltage based on the light reflected by the finger of the user, the fingerprint identification method provided in the embodiment of the present invention may further include:
and establishing a corresponding relation between the color combination and the dynamic gain parameters.
The step of establishing the corresponding relationship between the color combination and the dynamic gain parameter may specifically include:
step a, determining the color combination of the light emitted by two adjacent pixels.
The fingerprint identification area of the touch screen of the mobile terminal can display m colors when multi-color display is realized, and the number S of the same or different multi-color combinations can exist in the colors of light rays emitted by two adjacent pixels on two sides of each light receiving hole.
When the light colors displayed by any two pixels in the fingerprint identification area are not consistent, the total number of the light energy combinations obtained by each light receiving hole in the fingerprint identification area can be C (m, 2), namely 2 light energy combinations are selected from m colors for color arrangement combination, and A (m, 2) ═ m! L (m-2)! And the color combination mode is the color combination quantity.
When the light colors displayed by any two pixels in the fingerprint identification area are consistent, the light energy obtained by each light receiving hole in the fingerprint identification area is combined into a total of C (m, 1), namely, a certain color is selected from m colors to be combined into the same color, and a total of A (m, 1) ═ m! L (m-1)! And a color combination mode.
Thus, the number of color combinations of the light emitted by two adjacent pixels, S ═ a (m, 2) + a (m, 1) | m! L (m-2)! + m! L (m-1)! (ii) a The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
B, determining a dynamic gain parameter corresponding to each color combination, wherein when the color combination of the light rays emitted by two adjacent pixels is the first color combination, the induced voltage V is generated based on the light ray energy reflected by the finger of the userinAnd the value amplified by the amplifier according to the dynamic gain parameter n corresponding to the first color combination is more than or equal to a preset threshold level value Vr.
After determining the various color combinations that may exist between two adjacent pixels, the dynamic gain parameter n of the amplifier for each color combination may be determined.
The operation procedure of this step can be specifically understood as a verification procedure, that is, when the color combination of the light emitted by two adjacent pixels is S1, the corresponding verification operation is passedIn this way, a dynamic gain parameter n1 corresponding to the color combination S1 is determined, and the dynamic gain parameter n1 ensures the induced voltage V generated based on the light energy C1 corresponding to the color combination S1inThe value obtained after the amplification process by the amplifier according to the dynamic gain parameter n1 is greater than or equal to the preset threshold value Vr even if the identification voltage V corresponding to the color combination S1outAnd the level requirement in fingerprint identification is met.
And c, establishing a corresponding relation between each color combination and the corresponding dynamic gain parameter.
After obtaining the dynamic gain parameter n corresponding to all color combination modes that may exist between two adjacent pixels, a corresponding relationship between the color combination and the dynamic gain parameter n may be established, and the corresponding relationship information may be stored in a memory provided in the mobile terminal. In this way, the dynamic gain parameter n corresponding to the acquired color combination can be determined by querying the correspondence information between the color combination and the dynamic gain parameter n stored in the memory.
In another embodiment of the present invention, a corresponding relationship among a color combination, light energy corresponding to the color combination, and a dynamic gain parameter n corresponding to the color combination may be further constructed and stored.
Step 304, generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter.
After obtaining the induced voltage VinAnd a dynamic gain parameter n, the controllable amplifier applying the induced voltage VinAmplifying according to the dynamic gain parameter n determined in step 303 to generate the identification voltage VoutAnd obtaining light energy data through analog-digital voltage conversion and other processing, thereby forming a fingerprint identification image.
Step 305, fingerprint identification is carried out based on the fingerprint identification image.
This step may be similar to the prior art, and is not described herein again.
According to the fingerprint identification method provided by the embodiment of the invention, when a user touches the touch screen, the induction voltage is generated based on the light energy reflected by the finger of the user, and the light is the light emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of an amplifier corresponding to a color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image. Therefore, when the mobile terminal realizes the fingerprint identification function, the mobile terminal can realize multi-color display, and the display effect of the mobile terminal is ensured.
An embodiment of the present invention further provides a fingerprint identification method, as shown in fig. 4, the method may specifically include:
in step 401, a color combination of light emitted by two adjacent pixels is determined.
In the embodiment of the invention, the number of color combinations of the light emitted by two adjacent pixels is equal to a (m, 2) + a (m, 1) | m! L (m-2)! + m! L (m-1)! (ii) a The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
The operation process of this step can be specifically understood as a verification process, that is, when the color combination of the light emitted by two adjacent pixels is S1, the dynamic gain parameter n1 corresponding to the color combination S1 is determined through the corresponding verification operation, and the dynamic gain parameter n1 can ensure the induced voltage V1 generated based on the light energy C1 corresponding to the color combination S1inThe value obtained after the amplification processing of the amplifier according to the dynamic gain parameter n1 is more than or equal to the preset threshold level valueVr, i.e. the identification voltage V corresponding to the color combination S1outAnd the level requirement in fingerprint identification is met.
In step 403, a corresponding relationship between each color combination and the corresponding dynamic gain parameter is established.
After the amplifier dynamic gain parameters corresponding to all color combinations possibly existing between two adjacent pixels are obtained, the corresponding relation between the two pixels can be established, and the corresponding relation information can be stored in a memory arranged in the mobile terminal.
In step 404, when the user touches the touch screen, an induced voltage is generated based on the light energy reflected by the user's finger.
The light rays are emitted by two adjacent pixels, and the colors of the light rays emitted by the two adjacent pixels are the same or different.
In step 405, the color combinations of the light emitted by two adjacent pixels are obtained.
The color combination according to the embodiment of the present invention may be a combination of colors of light emitted from adjacent pixels disposed at both sides of a light receiving hole. For example, if the color of light emitted by a pixel at the upper side of a light receiving hole is red and the color of light emitted by a pixel at the lower side of the light receiving hole is blue, the combination of red and blue is the color combination of light emitted by the two adjacent pixels.
In the embodiment of the invention, the corresponding relation between the color combination of the light rays emitted by two adjacent pixels and the dynamic gain parameter n of the amplifier is inquired, so that when the multi-color display is realized in the fingerprint identification area of the touch screen, the color combination of the light rays emitted by two adjacent pixels at two sides of a light receiving hole is only required to be acquired, the dynamic gain parameter n of the amplifier corresponding to the color combination can be determined by inquiring the corresponding relation between the color combination and the dynamic gain parameter n which are established in advance, and the amplifier can be controlled to sense the voltage V subsequentlyinAmplifying the dynamic gain parameter n obtained according to the query to generate a satisfied fingerIdentification voltage V required by pattern identification levelout。
After obtaining the induced voltage VinAnd the dynamic gain parameter n of the amplifier, the controllable amplifier can control the induced voltage VinAmplifying according to the dynamic gain parameter n determined in step 303 to generate the identification voltage VoutAnd obtaining light energy data through analog-digital voltage conversion and other processing, thereby forming a fingerprint identification image.
The fingerprint identification method provided by the embodiment of the invention can realize multicolor display of the mobile terminal when the mobile terminal realizes the fingerprint identification function, thereby ensuring the display effect of the mobile terminal.
An embodiment of the present invention further provides a mobile terminal 500, where the mobile terminal 500 may specifically include a touch screen, and the touch screen includes a light receiving hole disposed between two adjacent pixels.
As shown in fig. 5, the mobile terminal 500 may further include:
a first generating module 510 for generating an induced voltage V based on the light energy reflected by the finger of the user when the user touches the touch screeninThe light is emitted by two adjacent pixels;
an obtaining module 520, configured to obtain a color combination of light emitted by two adjacent pixels;
a determining module 530, configured to determine a dynamic gain parameter n of the amplifier corresponding to the color combination acquired by the acquiring module 520 based on a pre-established correspondence between the color combination and the dynamic gain parameter n;
a second generating module 540 for generating the induced voltage V based on the induced voltage V generated by the first generating module 510inGenerating a fingerprint identification image according to the dynamic gain parameter n determined by the determining module 530;
and an identifying module 550, configured to perform fingerprint identification based on the fingerprint identification image generated by the second generating module 540.
In an embodiment, as shown in fig. 6, the mobile terminal 500 may further include:
the establishing module 560 is configured to establish a corresponding relationship between the color combination and the dynamic gain parameter n.
In a specific embodiment, as shown in fig. 7, the establishing module 560 may specifically include:
a first determining unit 561, configured to determine a color combination of light emitted by two adjacent pixels;
a second determining unit 562, configured to determine a dynamic gain parameter n corresponding to each color combination determined by the first determining unit 561, wherein when the color combination of the light emitted by two adjacent pixels is the first color combination, the induced voltage V is generated based on the light energy reflected by the finger of the userinThe value amplified by the amplifier according to the dynamic gain parameter n corresponding to the first color combination is larger than or equal to a preset threshold level value Vr;
a establishing unit 563 for establishing a correspondence between each color combination determined by the first determining unit 561 and the corresponding dynamic gain parameter n determined by the second determining unit 562.
In the embodiment of the invention, the number of color combinations of the light emitted by two adjacent pixels is equal to a (m, 2) + a (m, 1) | m! L (m-2)! + m! L (m-1)! (ii) a The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
In an embodiment, as shown in fig. 8, the mobile terminal 500 may further include:
the memory 570 is configured to store the information of the correspondence relationship between the color combination and the dynamic gain parameter n, which is established by the establishing module 560.
The determining module 530 may specifically determine the dynamic gain parameter n corresponding to the color combination acquired by the acquiring module 520 by querying the correspondence information between the color combination and the dynamic gain parameter n stored in the memory 570.
The mobile terminal 500 provided in the embodiment of the present invention can implement each process implemented by the mobile terminal in the method embodiments of fig. 3 and fig. 4, and is not described herein again to avoid repetition.
In the mobile terminal 500 provided in the above embodiment of the present invention, when the user touches the touch screen, the induced voltage is generated based on the light energy reflected by the finger of the user, where the light is light emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of an amplifier corresponding to a color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image. Therefore, when the mobile terminal realizes the fingerprint identification function, the mobile terminal can realize multi-color display, and the display effect of the mobile terminal is ensured.
The embodiment of the present invention further provides a mobile terminal, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the fingerprint identification method embodiment provided in the above embodiment of the present invention, and can achieve the same technical effect, and in order to avoid repetition, the details are not described here again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the fingerprint identification method provided in the foregoing embodiment of the present invention, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Fig. 9 is a block diagram of a mobile terminal 900 according to another embodiment of the present invention. The mobile terminal 900 shown in fig. 9 includes: at least one processor 901, memory 902, at least one network interface 904, user interface 903. Various components in mobile terminal 900 are coupled together by bus system 905. It is understood that the bus system 905 is used to enable communications among the components. The bus system 905 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 9 as bus system 905.
The user interface 903 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 902 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 902 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 902 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 9021 and application programs 9022.
The operating system 9021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application 9022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.
In this embodiment of the present invention, the mobile terminal 900 further includes: a computer program stored on the memory 902 and executable on the processor 901, in particular a computer program in the application 9022, which computer program, when executed by the processor 901, performs the steps of: when a user touches the touch screen, generating an induced voltage based on light energy reflected by a finger of the user, wherein the light is emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of the amplifier corresponding to the color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image.
The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and completes the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions of the present application, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, the computer program when executed by the processor 901 may further implement the following steps: and establishing a corresponding relation between the color combination and the dynamic gain parameters.
Optionally, the computer program when executed by the processor 901 may further implement the following steps: determining the color combination of light emitted by two adjacent pixels; determining a dynamic gain parameter corresponding to each color combination, wherein when the color combination of light rays emitted by two adjacent pixels is a first color combination, the value of an induced voltage generated based on the light ray energy reflected by a finger of a user after being amplified by an amplifier according to the dynamic gain parameter corresponding to the first color combination is more than or equal to a preset threshold level value; establishing a corresponding relation between each color combination and the corresponding dynamic gain parameter; the number of color combinations of the light emitted by two adjacent pixels is equal to A (m, 2) + A (m, 1) |! L (m-2)! + m! L (m-1)! (ii) a The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
Optionally, the computer program when executed by the processor 901 may further implement the following steps: the dynamic gain parameter corresponding to the color combination is determined by referring to the correspondence information between the color combination and the dynamic gain parameter stored in the memory 902.
The mobile terminal 900 can implement the processes implemented by the mobile terminal 500 in the foregoing embodiments, and therefore, for avoiding repetition, detailed descriptions thereof are omitted here.
The mobile terminal 900 provided by the embodiment of the invention can realize multi-color display of the mobile terminal when the mobile terminal realizes the fingerprint identification function, thereby ensuring the display effect of the mobile terminal.
Fig. 10 is a schematic structural diagram of a mobile terminal 1000 according to another embodiment of the present invention. Specifically, the mobile terminal 1000 in fig. 10 may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.
The mobile terminal 1000 in fig. 10 includes a Radio Frequency (RF) circuit 1010, a memory 1020, an input unit 1030, a display unit 1040, a processor 1060, an audio circuit 1070, a wifi (wireless fidelity) module 1080, and a power supply 1090.
The input unit 1030 may be used to receive numeric or character information input by a user and generate signal inputs related to user settings and function control of the mobile terminal 1000, among other things. Specifically, in the embodiment of the present invention, the input unit 1030 may include a touch panel 1031. The touch panel 1031, also referred to as a touch screen, may collect touch operations by a user (e.g., operations of the user on the touch panel 1031 by using any suitable object or accessory such as a finger or a stylus) thereon or nearby, and drive corresponding connection devices according to a preset program. Alternatively, the touch panel 1031 may include two parts, 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 it to touch point coordinates, and sends it to the processor 1060 where it can receive and execute commands from the processor 1060. In addition, the touch panel 1031 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1031, the input unit 1030 may also include other input devices 1032, and the other input devices 1032 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 track ball, a mouse, a joystick, etc.
Among other things, the display unit 1040 may be used to display information input by a user or information provided to the user and various menu interfaces of the mobile terminal 1000. The display unit 1040 may include a display panel 1041, and optionally, the display panel 1041 may be configured in the form of an LCD or an Organic Light-Emitting Diode (OLED).
It should be noted that the touch panel 1031 may cover the display panel 1041 to form a touch display screen, and when the touch display screen detects a touch operation thereon or nearby, the touch display screen is transmitted to the processor 1060 to determine the type of the touch event, and then the processor 1060 provides a corresponding visual output on the touch display screen according to the type of the touch event.
The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.
The processor 1060 is a control center of the mobile terminal 1000, connects various parts of the whole mobile phone by using various interfaces and lines, and executes various functions and processes data of the mobile terminal 1000 by running or executing software programs and/or modules stored in the first memory 1021 and calling data stored in the second memory 1022, thereby performing overall monitoring of the mobile terminal 1000. Optionally, processor 1060 may include one or more processing units.
In this embodiment of the present invention, the mobile terminal 1000 further includes: a computer program stored on the memory 1020 and executable on the processor 1060, the computer program when executed by the processor 1060 performing the steps of: when a user touches the touch screen, generating an induced voltage based on light energy reflected by a finger of the user, wherein the light is emitted by two adjacent pixels; acquiring color combinations of light rays emitted by two adjacent pixels; determining a dynamic gain parameter of the amplifier corresponding to the color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter; generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter; and performing fingerprint identification based on the fingerprint identification image.
Optionally, the computer program when executed by the processor 1060 may also implement the steps of: and establishing a corresponding relation between the color combination and the dynamic gain parameters.
Optionally, the computer program when executed by the processor 1060 may also implement the steps of: determining the color combination of light emitted by two adjacent pixels; determining a dynamic gain parameter corresponding to each color combination, wherein when the color combination of light rays emitted by two adjacent pixels is a first color combination, the value of an induced voltage generated based on the light ray energy reflected by a finger of a user after being amplified by an amplifier according to the dynamic gain parameter corresponding to the first color combination is more than or equal to a preset threshold level value; establishing a corresponding relation between each color combination and the corresponding dynamic gain parameter; the number of color combinations of the light emitted by two adjacent pixels is equal to A (m, 2) + A (m, 1) |! L (m-2)! + m! L (m-1)! (ii) a The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
Optionally, the computer program when executed by the processor 1060 may also implement the steps of: the dynamic gain parameter corresponding to the color combination is determined by referring to the correspondence information between the color combination and the dynamic gain parameter stored in the memory 1020.
The mobile terminal 1000 can implement the processes implemented by the mobile terminal 500 in the foregoing embodiments, and therefore, for avoiding repetition, detailed descriptions thereof are omitted here.
The mobile terminal 1000 provided by the embodiment of the invention can realize multi-color display of the mobile terminal when the mobile terminal realizes the fingerprint identification function, thereby ensuring the display effect of the mobile terminal.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A fingerprint identification method is applied to a mobile terminal, and the mobile terminal comprises a touch screen, wherein the touch screen comprises a light receiving hole arranged between two adjacent pixels; characterized in that the method comprises:
when a user touches the touch screen, generating an induced voltage based on light energy reflected by a finger of the user, wherein the light is emitted by the two adjacent pixels;
acquiring color combinations of light rays emitted by the two adjacent pixels;
determining a dynamic gain parameter of an amplifier corresponding to a color combination based on a pre-established correspondence between the color combination and the dynamic gain parameter;
generating a fingerprint identification image based on the induced voltage and the dynamic gain parameter;
and performing fingerprint identification based on the fingerprint identification image.
2. The method of claim 1, further comprising, prior to generating the induced voltage based on light reflected from the user's finger:
and establishing a corresponding relation between the color combination and the dynamic gain parameters.
3. The method of claim 2, wherein the step of establishing a correspondence between color combinations and amplifier dynamic gain parameters comprises:
determining the color combination of light emitted by two adjacent pixels;
determining a dynamic gain parameter corresponding to each color combination, wherein when the color combination of light rays emitted by two adjacent pixels is a first color combination, the value of an induced voltage generated based on the light ray energy reflected by a finger of a user is greater than or equal to a preset threshold level value after the induced voltage is amplified by an amplifier according to the dynamic gain parameter corresponding to the first color combination;
and establishing a corresponding relation between each color combination and the corresponding dynamic gain parameter.
4. A method according to claim 3, wherein the number of color combinations of light emitted by two adjacent pixels, S ═ a (m, 2) + a (m, 1) ═ m! L (m-2)! + m! L (m-1)! (ii) a
The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
5. The method according to claim 3, wherein the mobile terminal comprises a memory for storing correspondence information between color combinations and dynamic gain parameters;
the step of determining the dynamic gain parameter corresponding to the color combination based on the pre-established correspondence between the color combination and the dynamic gain parameter includes:
and determining the dynamic gain parameters corresponding to the color combinations by inquiring the corresponding relation information between the color combinations and the dynamic gain parameters stored in the memory.
6. A mobile terminal comprises a touch screen, wherein the touch screen comprises a light receiving hole arranged between two adjacent pixels; characterized in that, the mobile terminal further comprises:
the first generation module is used for generating an induced voltage based on light energy reflected by a finger of a user when the user touches the touch screen, wherein the light is light emitted by the two adjacent pixels;
the acquisition module is used for acquiring the color combination of the light rays emitted by the two adjacent pixels;
the determining module is used for determining the dynamic gain parameters of the amplifier corresponding to the color combination acquired by the acquiring module based on the corresponding relation between the color combination and the dynamic gain parameters which are established in advance;
the second generation module is used for generating a fingerprint identification image based on the induced voltage generated by the first generation module and the dynamic gain parameter determined by the determination module;
and the identification module is used for carrying out fingerprint identification on the basis of the fingerprint identification image generated by the second generation module.
7. The mobile terminal of claim 6, further comprising:
and the establishing module is used for establishing the corresponding relation between the color combination and the dynamic gain parameter.
8. The mobile terminal of claim 7, wherein the establishing module comprises:
the first determining unit is used for determining the color combination of the light emitted by two adjacent pixels;
the second determining unit is used for determining the dynamic gain parameter corresponding to each color combination determined by the first determining unit, wherein when the color combination of the light rays emitted by two adjacent pixels is the first color combination, the value of the induced voltage generated based on the light ray energy reflected by the finger of the user after being amplified by the amplifier according to the dynamic gain parameter corresponding to the first color combination is more than or equal to a preset threshold level value;
and the establishing unit is used for establishing the corresponding relation between each color combination determined by the first determining unit and the corresponding dynamic gain parameter determined by the second determining unit.
9. The mobile terminal of claim 8, wherein the number of color combinations of light emitted by the two adjacent pixels is a (m, 2) + a (m, 1) ═ m! L (m-2)! + m! L (m-1)! (ii) a
The touch screen comprises a touch screen fingerprint identification area, a touch screen and a touch screen, wherein m is the number of colors in an image displayed in the touch screen fingerprint identification area of the mobile terminal, A (m, 2) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels, and A (m, 1) is the number of color combinations which are different in the colors of light emitted by two adjacent pixels.
10. The mobile terminal of claim 8, further comprising:
the memory is used for storing the corresponding relation information between the color combination and the dynamic gain parameter established by the establishing module;
the determining module determines the dynamic gain parameter corresponding to the color combination acquired by the acquiring module by inquiring the corresponding relation information between the color combination and the dynamic gain parameter stored in the memory.
11. A mobile terminal, comprising: processor, memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the fingerprint recognition method according to any one of claims 1 to 5.
12. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the fingerprint recognition method according to any one of claims 1 to 5.
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