WO2019206225A1

WO2019206225A1 - Light supplement method and mobile terminal

Info

Publication number: WO2019206225A1
Application number: PCT/CN2019/084295
Authority: WO
Inventors: 丁浩; 徐璟
Original assignee: 维沃移动通信有限公司
Priority date: 2018-04-28
Filing date: 2019-04-25
Publication date: 2019-10-31
Also published as: CN108429888B; CN108429888A

Abstract

Disclosed are a light supplement method and a mobile terminal. The method comprises: driving, when a frame synchronization signal output by a frame synchronization signal output pin of a camera is output to a driver circuit of a light supplement lamp, the light supplement lamp to be turned on by means of the driver circuit by using the frame synchronization signal as a trigger signal, the frame synchronization signal output pin being connected to an enable pin of the driver circuit of the light supplement lamp.

Description

Filling method and mobile terminal

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201 810 040 044, filed on Jan. 28, 2018, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of terminals, and in particular, to a method of supplementing light and a mobile terminal.

Background technique

With the rapid development of mobile communication technology, mobile terminals have become an indispensable electronic product for people's lives, and the camera function or face recognition function in mobile terminals is one of the commonly used functions. Generally, a camera and a fill light are arranged in the mobile terminal, and the camera is used to collect image data or video data of the photographed object when the user performs photographing or face recognition, and the fill light is used to fill the photographing object.

However, in the related art, the time point at which the camera starts to collect data and the time point at which the fill light is turned on are separately controlled. In order to provide sufficient exposure brightness for data acquisition, the time required for the fill light to be illuminated is at least the time for acquiring two frames of images. The fill light has a longer lighting time, resulting in a shorter life of the fill light and higher power consumption.

Summary of the invention

Embodiments of the present disclosure provide a method of filling light to solve the problem of short service life and high power consumption caused by long lighting time of the fill light.

In a first aspect, a method of supplementing light is provided, the method comprising:

When the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, the backlight is turned on by the driving circuit with the frame synchronization signal as a trigger signal, and the frame synchronization signal is turned on. The output pin is connected to an enable pin of the drive circuit of the fill light.

In a second aspect, a mobile terminal is provided, where the mobile terminal includes:

a driving circuit of the fill light, configured to: when the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, driving the fill light to be turned on by using the frame synchronization signal as a trigger signal The frame synchronization signal output pin is connected to an enable pin of a driving circuit of the fill light.

In a third aspect, a mobile terminal is provided, the mobile terminal comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor The steps of the method of filling light as described in the first aspect are achieved.

In a fourth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a computer program, the computer program being executed by a processor to implement the steps of the method of supplementing light as described in the first aspect.

In the embodiment of the present disclosure, the frame synchronization signal output pin of the camera is connected to the enable pin of the driving circuit of the fill light, so that the terminal device can frame the frame through the driving circuit when the frame synchronization signal is output to the driving circuit of the fill light. The synchronization signal is used as the trigger signal to drive the fill light to be turned on, which can realize the synchronous control of the fill light and the camera acquisition data, so that the time of the fill light is at least the time of acquiring one frame of image can provide sufficient exposure for data acquisition. Brightness reduces the duration of the fill light, which increases the life of the fill light and reduces the power consumption of the fill light.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the disclosure, and are intended to be a In the drawing:

FIG. 1 is a schematic flow chart of a method of filling light according to an embodiment of the present disclosure.

2 is a schematic flow diagram of a method of supplementing light in accordance with an embodiment of the present disclosure.

FIG. 3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure.

FIG. 4 is a schematic structural diagram of a mobile terminal according to another embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the scope of the present invention are within the scope of the present disclosure.

FIG. 1 is a schematic flow chart of a method of filling light according to an embodiment of the present disclosure. The method shown in FIG. 1 can be performed by a mobile terminal, and the method shown in FIG. 1 includes:

S110, when the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, the backlight is turned on by the driving circuit by using the frame synchronization signal as a trigger signal, the frame The sync signal output pin is coupled to an enable pin of the fill lamp drive circuit.

It should be noted that the frame synchronization signal output pin (VSYNC_OUT) of the camera may also be referred to as a frame synchronization signal pin. When the camera is to expose the collected data, the level of the frame synchronization signal output pin is pulled high, and the frame synchronization signal is output at the same time. . The frame synchronization signal output pin is connected to the enable pin of the driving circuit, so that the frame synchronization signal outputted by the frame synchronization signal output pin is directly output to the driving circuit. The frequency of the frame sync signal is the same as the sampling frequency of the camera.

It should be noted that the specific implementation manner that the frame synchronization signal output pin is connected to the enable pin of the driving circuit of the fill light may be that the frame synchronization signal output pin is directly connected to the enable pin of the driving circuit of the fill light, or The frame sync signal output pin is indirectly connected to the enable pin of the fill lamp driving circuit.

Optionally, in some embodiments, the camera is a Complementary Metal Oxide Semiconductor Camera Module (CCM).

Optionally, in some embodiments, the camera is used for normal photography, in which case the fill light is a visible light fill light. Or the camera is used for face recognition, in which case the fill light is an infrared fill light. Since the infrared light belongs to invisible light, the infrared fill light is used to fill the process of face recognition, which does not cause an uncomfortable feeling and can improve user comfort.

Optionally, as an example, the fill light is an infrared fill light. Before S110, the method shown in FIG. 1 further includes: acquiring light information of a current environment, where the light information includes one of the following information: The intensity information, the illuminance information, and the illuminance information; determining, according to the optical information, whether a condition for turning on the fill light in the current environment is satisfied. It can be understood that the optical information can also include other parameter information for characterizing the light.

For example, the light information includes illuminance information, the ambient light sensor in the mobile terminal detects the illuminance of the current environment, obtains the illuminance value, and then compares the obtained illuminance value with a preset illuminance threshold (for example, 2 lux), if obtained When the illuminance value is lower than the preset illuminance threshold, it is determined that the condition of turning on the infrared fill light in the current environment is satisfied. Here, an environment where the illuminance value is lower than the preset illuminance threshold can be referred to as a "dark environment."

Further, as another example, the fill light is an infrared fill light. Before S110, the method described in FIG. 1 further includes: detecting whether a user inputs a face recognition trigger operation for triggering face recognition. That is to say, when it is detected that the face recognition in the dark environment is triggered, when the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the infrared fill lamp, the frame is synchronized by the driving circuit. The signal acts as a trigger to drive the IR fill light on.

For example, the face recognition triggering operation may be an operation of touching the power button when the mobile terminal is in the off-screen state, or a lifting operation when the mobile terminal is in the off-screen state, and may be through the three-axis set in the mobile terminal. The gyroscope and gravity accelerometer detect if the user has a wrist lift operation.

In the embodiment of the present disclosure, it can be understood that the driving circuit using the frame synchronization signal as the trigger signal can be regarded as the enabling signal of the frame synchronization signal as the driving circuit. Although the camera usually starts collecting data when the level of the frame sync signal pin is pulled high, the frame sync signal output is directly output to the drive when the level of the frame sync signal pin is pulled high. The circuit acts as a trigger signal to cause the driver circuit to drive the fill light to be turned on, but the preset duration here is usually very short, for example 1 ms, so it can be ignored. It can be considered that the fill light is turned on and the camera starts collecting data at the same time.

Optionally, in some embodiments, driving the fill light to be turned on by using the frame synchronization signal as a trigger signal by the driving circuit, specifically: outputting a target current at a timing of receiving the frame synchronization signal by the driving circuit to drive the infrared fill light to be turned on. .

Generally speaking, the camera on the mobile terminal is used for both ordinary photography and face recognition. In order to balance these two requirements, the transmittance of the infrared film of the camera is usually low when implemented, for example, , less than 1%. In this case, if face recognition is to be performed, the current of the infrared fill lamp will increase, and it is usually added to 1A or more. Excessive current will cause the IR fill light to turn on for a few hundred ms to reach the junction temperature and cannot be used. Therefore, the simulation can be performed according to the ambient brightness and the required fill light intensity, the current value of the target current that the drive circuit needs to output is determined, and the determined current value is preset in the mobile terminal, which can simplify the implementation of the mobile terminal.

Further, in some embodiments, the method of FIG. 1 further includes: determining a current value of the target current according to the optical information and the preset correspondence, where the preset correspondence includes a correspondence between the optical information and the current value.

For example, the correspondence between the illuminance value and the current value is pre-configured in the mobile terminal. After the illuminance value of the current environment is obtained, the current value of the driving fill lamp can be obtained according to the obtained illuminance value and the corresponding relationship. . Therefore, it is possible to determine an appropriate driving current according to the brightness of the current environment, and to avoid the problem that the junction temperature of the fill lamp is always caused by the use of a large current.

It should be noted that, in the embodiment of the present disclosure, the fact that the fill light is turned on substantially means that one light-off period of the fill light is triggered. In one light-off period, the fill light is turned on and off according to the period of the first time period, and the second time period is extinguished. After a light-off period of the fill light is completed, if the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light again, a light-off period of the fill light is triggered again. In the related art, the time point at which the camera collects data and the time point at which the fill light is turned on are separately controlled. In order to provide sufficient exposure brightness for data acquisition, the duration of the fill light illumination is at least for one light-off period. The time to capture two frames of images. In the embodiment of the present disclosure, the opening of the fill light and the data acquisition are synchronously controlled. Therefore, in a lighting-off period, the time for the fill light to illuminate is at least the time for acquiring one frame of image, and the fill light The illumination time is reduced, so that the emission power of the fill light is reduced, thereby prolonging the effective working time of the fill light and improving the use time of the whole machine.

Optionally, as an example, an experimental simulation is performed according to the junction temperature of the infrared fill lamp and the sampling frequency of the camera, and the duration of the fill light to be illuminated and the length of time required to be extinguished in a bright-off period are determined. For example, in a lighting-off cycle, the duration of the fill light needs to be illuminated for 90 ms, and the duration required to be extinguished is 300 ms.

2 is a schematic flow diagram of a method of filling light in accordance with an embodiment of the present disclosure. The method shown in FIG. 2 can be performed by a mobile terminal, and the method shown in FIG. 2 includes:

S210. It is detected that face recognition in a dark environment is triggered.

It can be understood that the dark environment can be a light environment preset according to different rules or standards.

S220: The frame synchronization signal output by the camera is output to an enable control port of the driving circuit of the fill light.

S230, the driving circuit of the fill light uses the frame synchronization signal as a trigger signal to drive the fill light to be on.

The method of filling light according to an embodiment of the present disclosure has been described in detail above with reference to FIGS. 1 and 2, and a mobile terminal according to an embodiment of the present disclosure will be described in detail below with reference to FIG. The mobile terminal 30 shown in FIG. 3 includes:

a driving circuit 31 for the fill light, configured to drive the fill light with the frame synchronization signal as a trigger signal when a frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light Turning on, the frame synchronization signal output pin is connected to an enable pin of a driving circuit of the fill light.

According to the mobile terminal of the embodiment of the present disclosure, the frame synchronization signal output pin of the camera is connected to the enable pin of the driving circuit of the fill light, and can be frame-synchronized by the driving circuit when the frame synchronization signal is output to the driving circuit of the fill light. The signal is used as the trigger signal to drive the fill light to be turned on, which can realize the synchronous control of the fill light and the data collected by the camera, so that the time of the fill light is at least the time of acquiring one frame of image can provide sufficient exposure brightness for data acquisition. , reducing the duration of the fill light, thereby increasing the life of the fill light and reducing the power consumption of the fill light.

Optionally, as an embodiment, the fill light is an infrared fill light. As shown in FIG. 3, the mobile terminal 30 further includes:

The processing unit 32 is configured to acquire optical information of a current environment, where the optical information includes one of the following information, before the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light Species: light intensity information, illuminance information, and lightness information;

Determining, according to the optical information, whether a condition for turning on the infrared fill light in the current environment is satisfied.

Optionally, as an embodiment, the processing unit 32 is further configured to:

Before the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, it is detected whether the user inputs a face recognition triggering operation for triggering face recognition.

Optionally, as an embodiment, the driving circuit 31 of the fill light is specifically configured to:

A target current is output at a timing of receiving the frame synchronization signal to drive the infrared fill light to be turned on.

Optionally, as an embodiment, the driving circuit 31 of the fill light is further configured to:

And determining, according to the optical information and the preset correspondence, a current value of the target current, where the preset correspondence includes a correspondence between the optical information and the current value.

A mobile terminal according to an embodiment of the present disclosure may refer to a flow of a method corresponding to an embodiment of the present disclosure, and each unit/module in the mobile terminal and the other operations and/or functions described above are respectively implemented in the method shown in FIG. The corresponding process, for the sake of brevity, will not be described here.

FIG. 4 is a schematic structural diagram of hardware of a mobile terminal that implements an embodiment of the present disclosure. As shown in FIG. 4, the mobile terminal 400 includes, but is not limited to, a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, a user input unit 407, an interface unit 408, and a memory 409. , processor 410, and power supply 411 and other components. It will be understood by those skilled in the art that the mobile terminal structure shown in FIG. 4 does not constitute a limitation of the mobile terminal, and the mobile terminal may include more or less components than those illustrated, or combine some components, or different components. Arrangement. In the embodiments of the present disclosure, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle terminal, a wearable device, a pedometer, and the like.

The processor 410 is configured to: when the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, the driving circuit drives the fill light by using the frame synchronization signal as a trigger signal. The lamp is turned on, and the frame synchronization signal output pin is connected to an enable pin of the driving circuit of the fill lamp.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 401 can be used for receiving and transmitting signals during the transmission and reception of information or during a call, and specifically, after receiving downlink data from the base station, processing the data to the processor 410; The uplink data is sent to the base station. Generally, radio frequency unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio unit 401 can also communicate with the network and other devices through a wireless communication system.

The mobile terminal provides the user with wireless broadband Internet access through the network module 402, such as helping the user to send and receive emails, browse web pages, and access streaming media.

The audio output unit 403 can convert the audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output as a sound. Moreover, the audio output unit 403 can also provide audio output (eg, call signal reception sound, message reception sound, etc.) associated with a particular function performed by the mobile terminal 400. The audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.

The input unit 404 is for receiving an audio or video signal. The input unit 404 may include a graphics processing unit (GPU) 4041 and a microphone 4042 that images an still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The data is processed. The processed image frame can be displayed on the display unit 406. The image frames processed by the graphics processor 4041 may be stored in the memory 409 (or other storage medium) or transmitted via the radio unit 401 or the network module 402. The microphone 4042 can receive sound and can process such sound as audio data. The processed audio data can be converted to a format output that can be transmitted to the mobile communication base station via the radio unit 401 in the case of a telephone call mode.

The mobile terminal 400 also includes at least one type of sensor 405, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 4061 according to the brightness of the ambient light, and the proximity sensor can close the display panel 4061 when the mobile terminal 400 moves to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the attitude of the mobile terminal (such as horizontal and vertical screen switching, related games). , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; sensor 405 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensor or the like, wherein the infrared sensor can measure the distance between the object and the mobile terminal by transmitting and receiving infrared light, and details are not described herein again.

The display unit 406 is for displaying information input by the user or information provided to the user. The display unit 406 can include a display panel 4061. The display panel 4061 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 407 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072. The touch panel 4071, also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 4071 or near the touch panel 4071. operating). The touch panel 4071 may include two parts of a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 410 receives the commands from the processor 410 and executes them. In addition, the touch panel 4071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 4071, the user input unit 407 may also include other input devices 4072. Specifically, the other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, and are not described herein again.

Further, the touch panel 4071 can be overlaid on the display panel 4061. When the touch panel 4071 detects a touch operation thereon or nearby, the touch panel 4071 transmits to the processor 410 to determine the type of the touch event, and then the processor 410 according to the touch. The type of event provides a corresponding visual output on display panel 4061. Although in FIG. 4, the touch panel 4071 and the display panel 4061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 4071 can be integrated with the display panel 4061. The input and output functions of the mobile terminal are implemented, and are not limited herein.

The interface unit 408 is an interface in which an external device is connected to the mobile terminal 400. For example, the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, and an audio input/output. (I/O) port, video I/O port, headphone port, and more. The interface unit 408 can be configured to receive input from an external device (eg, data information, power, etc.) and transmit the received input to one or more components within the mobile terminal 400 or can be used at the mobile terminal 400 and externally Data is transferred between devices.

Memory 409 can be used to store software programs as well as various data. The memory 409 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.). Further, the memory 409 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 410 is a control center of the mobile terminal that connects various portions of the entire mobile terminal using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 409, and recalling data stored in the memory 409. The mobile terminal performs various functions and processing data to perform overall monitoring on the mobile terminal. The processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, etc., and a modulation solution The processor mainly handles wireless communication. It can be understood that the above modem processor may not be integrated into the processor 410.

The mobile terminal 400 may further include a power source 411 (such as a battery) for supplying power to various components. Alternatively, the power source 411 may be logically connected to the processor 410 through a power management system to manage charging, discharging, and power consumption through the power management system. Management and other functions.

In addition, the mobile terminal 400 includes a camera, a fill light, and some functional modules not shown, and details are not described herein again.

Optionally, an embodiment of the present disclosure further provides a mobile terminal, including a processor 410, a memory 409, a computer program stored on the memory 409 and executable on the processor 410, the computer program being executed by the processor 410. The various processes of the method embodiment shown in FIG. 1 are implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

The embodiment of the present disclosure further provides a computer readable storage medium, where the computer program is stored on a computer program, and when the computer program is executed by the processor, the processes of the method shown in FIG. 1 are implemented, and the same can be achieved. Technical effects, to avoid repetition, will not be repeated here. The computer readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include non-persistent memory, random access memory (RAM), and/or non-volatile memory in a computer readable medium, such as read only memory (ROM) or flash memory. Memory is an example of a computer readable medium.

Computer readable media includes both permanent and non-persistent, removable and non-removable media. Information storage can be implemented by any method or technology. The information can be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.

It is also to be understood that the terms "comprises" or "comprising" or "comprising" or any other variations are intended to encompass a non-exclusive inclusion, such that a process, method, article, Other elements not explicitly listed, or elements that are inherent to such a process, method, commodity, or equipment. An element defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device including the element.

Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The above description is only for the embodiments of the present disclosure, and is not intended to limit the disclosure. Various changes and modifications of the present disclosure are possible to those skilled in the art. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present disclosure are intended to be included within the scope of the appended claims.

Claims

A method of filling light, comprising:

When the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, the backlight is turned on by the driving circuit with the frame synchronization signal as a trigger signal, and the frame synchronization signal is turned on. The output pin is connected to an enable pin of the drive circuit of the fill light.
The method according to claim 1, wherein the fill light is an infrared fill light, and before the frame synchronization signal outputted by the frame sync signal output pin of the camera is output to the driving circuit of the infrared fill light, the method further include:

Obtaining optical information of a current environment, where the optical information includes one of the following information: light intensity information, illuminance information, and lightness information;

Determining, according to the optical information, whether a condition for turning on the infrared fill light in the current environment is satisfied.
The method according to claim 2, before the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, further comprising:

It is detected whether the user inputs a face recognition triggering operation for triggering face recognition.
The method according to claim 2 or 3, wherein the driving of the fill light by the driving circuit with the frame synchronization signal as a trigger signal comprises:

The target current is output by the driving circuit at the timing of receiving the frame synchronization signal to drive the infrared fill light to be turned on.
The method of claim 4 further comprising:

And determining, according to the optical information and the preset correspondence, a current value of the target current, where the preset correspondence includes a correspondence between the optical information and the current value.
A mobile terminal includes:

a driving circuit of the fill light, configured to: when the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, driving the fill light to be turned on by using the frame synchronization signal as a trigger signal The frame synchronization signal output pin is connected to an enable pin of a driving circuit of the fill light.
The mobile terminal of claim 6, wherein the fill light is an infrared fill light, and the mobile terminal further comprises:

a processing unit, configured to acquire optical information of a current environment, where the optical information includes one of the following information, before the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light : light intensity information, illuminance information, and lightness information;

Determining, according to the optical information, whether a condition for turning on the infrared fill light in the current environment is satisfied.
The mobile terminal of claim 7, wherein the processing unit is further configured to:

Before the frame synchronization signal outputted by the frame synchronization signal output pin of the camera is output to the driving circuit of the fill light, it is detected whether the user inputs a face recognition triggering operation for triggering face recognition.
The mobile terminal according to any one of claims 7 to 8, wherein the driving circuit of the fill light is specifically used for:

A target current is output at a timing of receiving the frame synchronization signal to drive the infrared fill light to be turned on.
The mobile terminal of claim 9, wherein the driving circuit of the fill light is further configured to:

And determining, according to the optical information and the preset correspondence, a current value of the target current, where the preset correspondence includes a correspondence between the optical information and the current value.
A mobile terminal comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, the computer program being implemented by the processor when implemented in claims 1 to 5 The method of the method of supplementing light according to any one of the preceding claims.
A computer readable storage medium storing a computer program, the computer program being executed by a processor, the steps of the method of supplementing light according to any one of claims 1 to 5.