CN113378599A - Optical fingerprint device, electronic equipment, brightness control method and device - Google Patents
Optical fingerprint device, electronic equipment, brightness control method and device Download PDFInfo
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- CN113378599A CN113378599A CN202010116751.5A CN202010116751A CN113378599A CN 113378599 A CN113378599 A CN 113378599A CN 202010116751 A CN202010116751 A CN 202010116751A CN 113378599 A CN113378599 A CN 113378599A
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Abstract
The disclosure relates to an optical fingerprint device, an electronic device, a brightness control method and a brightness control device. The brightness control method is applied to a terminal, the terminal comprises an optical fingerprint device, the optical fingerprint device is arranged below a screen of the terminal, and the optical fingerprint device comprises a fingerprint sensor, an optical filter and a power driving component for driving the optical filter to move away from or insert into a light path. The brightness control method comprises the following steps: detecting the ambient light illumination of the environment where the terminal is located; controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient illuminance and the illuminance threshold; the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path. According to the method and the device, the success rate of unlocking the bright spots is improved, the improvement degree of the screen brightness in a low-illumination environment is realized, and the comfort level of human eyes is improved.
Description
Technical Field
The present disclosure relates to the field of terminal technologies, and in particular, to an optical fingerprint device, an electronic apparatus, and a brightness control method and apparatus.
Background
The application of optical fingerprint bright spot unlocking is more and more extensive. The optical fingerprint speckle unlocking can also be called speckle unlocking. The situation that unlocking fails can occur in low-illumination environments such as at night or indoors.
In the related art, in order to improve the success rate of unlocking the bright spots in low-illumination environments such as at night or indoors, the mode of improving the maximum brightness of a screen is adopted. However, under the low-illumination environment, the maximum brightness of the screen is improved, and due to the fact that the brightness is very high, the eyes of people can be stimulated, the eyes of people feel that unlocking light spots are particularly dazzling, and the user experience degree is low.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides an optical fingerprint device, an electronic apparatus, a brightness control method and an apparatus.
According to a first aspect of the embodiments of the present disclosure, an optical fingerprint device is provided, which is applied to an electronic device, and is disposed below a screen of the electronic device, where the optical fingerprint device includes a fingerprint sensor, an optical filter, and a power driving component; the screen, the optical filter and the fingerprint sensor are sequentially arranged from top to bottom, and the power driving part is used for driving the optical filter to move away from the light path or insert into the light path; the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
In one embodiment, the power drive component is an electromagnetic coil or an electric motor.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic device including the optical fingerprint apparatus of the first aspect or any one of the implementation manners of the first aspect.
According to a third aspect of the embodiments of the present disclosure, there is provided a brightness control method applied to a terminal including an optical fingerprint device disposed below a screen of the terminal, the optical fingerprint device including an optical filter and a power driving part that drives the optical filter to move away from or insert into an optical path, the brightness control method including:
detecting the ambient light illumination of the environment where the terminal is located; controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient illuminance and the illuminance threshold; the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
In one embodiment, controlling the power driving unit to drive the optical filter to move away from or insert into the optical path according to the ambient light illuminance and the illuminance threshold comprises:
when the ambient light intensity is greater than the light intensity threshold value, controlling the power driving part to drive the optical filter to be inserted into the light path; and when the ambient light illumination is smaller than the light illumination threshold value, controlling the power driving part to drive the optical filter to move away from the light path.
In another embodiment, the optical fingerprint device comprises a fingerprint sensor; the illumination threshold value is determined according to the luminous flux of the fingerprint sensor and the state of the terminal screen.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a brightness control apparatus applied to a terminal including an optical fingerprint apparatus including a filter and a power driving part that drives the filter to move away from or insert into an optical path, the brightness control apparatus including:
the detection unit is used for detecting the ambient light illumination of the environment where the terminal is located; the control unit is used for controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient illuminance and the illuminance threshold; the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
In one embodiment, the control unit controls the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient light illuminance and the illuminance threshold value as follows:
when the ambient light intensity is greater than the light intensity threshold value, controlling the power driving part to drive the optical filter to be inserted into the light path; and when the ambient light illumination is smaller than the light illumination threshold value, controlling the power driving part to drive the optical filter to move away from the light path.
In another embodiment, the optical fingerprint device comprises a fingerprint sensor; the illumination threshold value is determined according to the luminous flux of the fingerprint sensor and the state of the terminal screen.
According to a fifth aspect of the embodiments of the present disclosure, there is provided a luminance control device including:
a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to: the third aspect or the brightness control method described in any one of the embodiments of the third aspect is performed.
According to a sixth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions of the storage medium, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the brightness control method described in the third aspect or any one of the implementation manners of the third aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the optical fingerprint device comprises an optical filter and a power driving part for driving the optical filter to move away from or insert into a light path, and the power driving part is controlled to drive the optical filter to move away from or insert into the light path according to ambient illuminance and an illuminance threshold value, so that the success rate of bright spot unlocking is improved, the improvement degree of screen brightness in a low-illuminance environment is realized, and the comfort level of human eyes is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram illustrating an optical fingerprint device according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating an electronic device according to an exemplary embodiment.
Fig. 3 is a flow chart illustrating a brightness control method according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a luminance controlling apparatus according to an exemplary embodiment.
FIG. 5 is a block diagram illustrating an apparatus in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the embodiment of the disclosure, in order to improve the success rate of unlocking optical fingerprint bright spots and improve the comfort of human eyes, the hardware structure of the optical fingerprint device is improved, so that the optical filter included in the optical fingerprint device can be moved away from the optical path or inserted into the optical path according to requirements, and a method for controlling the brightness by controlling the optical filter to move away from the optical path or insert into the optical path is provided.
The embodiment of the disclosure provides an optical fingerprint device, which is arranged below a screen of an electronic device and comprises a fingerprint sensor, an optical filter and a power driving component. The screen, the optical filter and the fingerprint sensor are sequentially arranged from top to bottom, and the power driving component is used for driving the optical filter to move away from the light path or insert into the light path.
Fig. 1 is a schematic diagram of an optical fingerprint device 100 according to an embodiment of the disclosure. Referring to fig. 1, the optical fingerprint device 100 includes a fingerprint sensor (fingerprint sensor) 101, a power driving part 103, and an optical filter 104.
The optical fingerprint device 100 may further include a filter holder 102. The power driving part 103 and the filter 104 are provided on the filter holder 102. The power driving part 103 is used to drive the optical filter 104 to move away from the optical path or to insert into the optical path.
In the embodiment of the present disclosure, the power driving component 103 may be an electromagnetic coil, a motor, or another power source, and the embodiment of the present disclosure is not limited.
The optical filter 104 has an infrared filtering function when inserted into the optical path, and the optical filter 104 does not have an infrared filtering function when removed from the optical path.
In the disclosed embodiment, the filter 104 may be an IR filter, including an infrared filter 1041 and an anti-reflection AR all-transparent glass 1042. When the optical filter 104 is inserted into the optical path, an overlapping region is formed between the infrared optical filter 1041 and the fingerprint sensor 101 in the vertical direction, so that an infrared filtering function is realized. When the optical filter 104 is moved away from the light path, the anti-reflection AR full-transmission glass sheet 1042 and the fingerprint sensor 101 have an overlapping region in the vertical direction, so that the full-transmission of light is realized, and the infrared filtering function is not provided.
The embodiment of the present disclosure further provides an electronic device, which includes the optical fingerprint device 100 mentioned above, and further includes a screen 105, a lens assembly 106 of a fingerprint lens, and the like. Fig. 2 is a schematic structural diagram of an electronic device including an optical fingerprint apparatus 100 according to an exemplary embodiment of the present disclosure.
Referring to fig. 2, the screen 105, the filter 104 and the fingerprint sensor 101 are sequentially disposed from top to bottom. The dotted line 108 in fig. 2 indicates the optical path direction. The power driving component 103 drives the infrared optical filter 1041 to be inserted into the light path, so that the infrared optical filter 1041, the screen light emitting area 107 and the fingerprint sensor 101 have an overlapping area in the vertical direction, and further the optical filter 104 is driven to perform infrared filtering. The power driving component 103 drives the anti-reflection AR full-transmission glass sheet 1042 to move away from the light path, so that no overlapping area exists between the infrared light filter 1041 and the screen light emitting region 107 and the fingerprint sensor 101 in the vertical direction, and further, the light is fully transmitted without infrared filtering.
In the embodiment of the disclosure, the control of removing the optical filter 104 from the optical path or inserting the optical filter 104 into the optical path can be realized according to the ambient illuminance detected by the terminal, so that the control of the brightness in the bright spot unlocking process is realized.
Fig. 3 is a flowchart illustrating a brightness control method according to an exemplary embodiment, where the brightness control method is used in a terminal, the terminal includes an optical fingerprint device 100, and the optical fingerprint device 100 is disposed below a screen of the terminal, as shown in fig. 3. The optical fingerprint device 100 includes a filter 104 and a power driving part 103 for driving the filter 104 to move away from or insert into the optical path. The following steps are included as shown with reference to fig. 3.
In step S101, the ambient light level of the environment in which the terminal is located is detected.
In the embodiment of the present disclosure, the ambient illuminance of the environment where the terminal is located may be detected by an ambient light sensor (P-sensor).
In step S102, the power driving unit 103 is controlled to drive the optical filter 104 to move away from the optical path or insert into the optical path according to the ambient light level and the light level threshold.
The optical filter 104 has an infrared filtering function when inserted into the optical path, and the optical filter 104 does not have an infrared filtering function when removed from the optical path.
In one implementation, the disclosed embodiment may control the power driving unit 103 to drive the optical filter 104 to be inserted into the optical path for infrared filtering when the ambient light illuminance is greater than the illuminance threshold. For example, the optical filter 104 is inserted during the day or when the illuminance reaches a certain threshold, so as to prevent external light from entering the fingerprint lens to affect the image formation.
In another embodiment, when the ambient light intensity is less than the light intensity threshold, the power driving unit 103 is controlled to drive the filter 104 to move away from the optical path. For example, at night or in a low-light environment, the infrared filtering function is removed to increase light energy, reduce the light spot brightness in the optical fingerprint device, and improve the comfort of human eyes.
In the embodiment of the present disclosure, the illumination threshold may be predetermined according to the light flux of the fingerprint sensor and the screen state of the terminal. Generally, the illumination threshold needs to satisfy the requirement that the fingerprint sensor can identify the fingerprint image and ensure the light duty ratio required by the screen state of the terminal.
In the embodiment of the present disclosure, the ambient illuminance may be detected by the ambient light sensor, and the detected ambient illuminance is sent to the IC of the terminal, and the terminal IC compares the ambient illuminance with the illuminance threshold, and then determines to remove the optical path or insert the optical filter. When the IC controls the optical filter to move away from the optical path or insert into the optical path, the drive control can be performed by controlling the power driving part which drives the optical filter to move away from the optical path or insert into the optical path.
Based on the same conception, the embodiment of the disclosure also provides a brightness control device, which is used for controlling the brightness in the bright spot unlocking process.
It is understood that the brightness control apparatus provided by the embodiments of the present disclosure includes hardware structures and/or software modules for performing the respective functions in order to implement the above functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. 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 disclosure.
Fig. 4 is a block diagram illustrating a luminance controlling apparatus according to an exemplary embodiment. Referring to fig. 4, the luminance control apparatus 100 is applied to a terminal including an optical fingerprint device disposed under a screen of the terminal, the optical fingerprint device including a filter and a power driving part driving the filter to be removed from or inserted into a light path. The luminance control device 100 includes a detection unit 101 and a control unit 102.
The detecting unit 101 is configured to detect an ambient light illuminance of an environment where the terminal is located. And the control unit 102 is used for controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient light intensity and the light intensity threshold value.
The optical filter has an infrared filtering function when inserted into the optical path, and does not have the infrared filtering function when removed from the optical path.
In one embodiment, when the ambient light level is less than the light level threshold, the control unit 102 controls the power driving unit to drive the filter to be inserted into the optical path,
in another embodiment, when the ambient light intensity is greater than the light intensity threshold, the control unit 102 controls the power driving part to drive the filter to move away from the optical path.
In another embodiment, the optical fingerprint device includes a fingerprint sensor, and the light intensity threshold is determined according to the light flux of the fingerprint sensor and the state of the terminal screen.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 5 is a block diagram illustrating an apparatus 200 for controlling luminance according to an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 5, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor assembly 214 may detect the status of the insertion/removal of the optical path of the device 200, the relative positioning of the components, such as a display and keypad of the apparatus 200, the sensor assembly 214 may also detect a change in the position of the apparatus 200 or a component of the apparatus 200, the presence or absence of user contact with the apparatus 200, the orientation or acceleration/deceleration of the apparatus 200, and a change in the temperature of the apparatus 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by 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), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. An optical fingerprint device is applied to electronic equipment and is characterized in that the optical fingerprint device is arranged below a screen of the electronic equipment and comprises a fingerprint sensor, an optical filter and a power driving component;
the screen, the optical filter and the fingerprint sensor are sequentially arranged from top to bottom, and the power driving part is used for driving the optical filter to move away from the light path or insert into the light path;
the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
2. The optical fingerprint device of claim 1, wherein the powered member is an electromagnet or a motor.
3. An electronic device characterized by comprising the optical fingerprint device of any one of claims 1 to 2.
4. A brightness control method applied to a terminal including an optical fingerprint device disposed below a screen of the terminal, the optical fingerprint device including an optical filter and a power driving part that drives the optical filter to move away from or insert into an optical path, the brightness control method comprising:
detecting the ambient light illumination of the environment where the terminal is located;
controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient illuminance and the illuminance threshold;
the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
5. The method of claim 4, wherein controlling the power driving unit to drive the optical filter to move away from or insert into the optical path according to the ambient light level and the light level threshold comprises:
when the ambient light intensity is greater than the light intensity threshold value, controlling the power driving part to drive the optical filter to be inserted into the light path;
and when the ambient light illumination is smaller than the light illumination threshold value, controlling the power driving part to drive the optical filter to move away from the light path.
6. A brightness control method according to claim 4 or 5, characterized in that the optical fingerprint device comprises a fingerprint sensor;
the illumination threshold value is determined according to the luminous flux of the fingerprint sensor and the state of the terminal screen.
7. A brightness control apparatus applied to a terminal, the terminal including an optical fingerprint apparatus disposed below a screen of the terminal, the optical fingerprint apparatus including an optical filter and a power driving part that drives the optical filter to move away from or insert into an optical path, the brightness control apparatus comprising:
the detection unit is used for detecting the ambient light illumination of the environment where the terminal is located;
the control unit is used for controlling the power driving part to drive the optical filter to move away from the optical path or insert into the optical path according to the ambient illuminance and the illuminance threshold;
the optical filter has an infrared filtering function when being inserted into the optical path, and does not have the infrared filtering function when being removed from the optical path.
8. The luminance control device as claimed in claim 7, wherein the control unit controls the power driving part to drive the optical filter to move away from or insert into the optical path according to the ambient light illuminance and the illuminance threshold by:
when the ambient light intensity is greater than the light intensity threshold value, controlling the power driving part to drive the optical filter to be inserted into the light path;
and when the ambient light illumination is smaller than the light illumination threshold value, controlling the power driving part to drive the optical filter to move away from the light path.
9. A brightness control device according to claim 7 or 8, characterized in that said optical fingerprint device comprises a fingerprint sensor;
the illumination threshold value is determined according to the luminous flux of the fingerprint sensor and the screen state of the terminal.
10. A luminance control apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: the luminance control method according to any one of claims 4 to 6 is performed.
11. A non-transitory computer readable storage medium having instructions therein, which when executed by a processor of a mobile terminal, enable the mobile terminal to perform the brightness control method of any one of claims 4 to 6.
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| 陆慧编著: "《光学》", 上海：华东理工大学出版社, pages: 21 - 22 * |
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