阅读说明：本技术 光源亮度调节方法、系统、电子设备及装置 (Light source brightness adjusting method and system, electronic equipment and device ) 是由 黄国生 覃锋 胡飞 王则钦 于 2020-04-13 设计创作，主要内容包括：本申请公开光源亮度调节方法、系统、电子设备及装置,其中,光源亮度调节方法包括：获取视频图像的亮度信息；在预制查询表内检索所述亮度信息,以确定与亮度信息匹配的控制信号,预制查询表包括多种亮度信息及分别对应的控制信号；利用所述控制信号控制电源系统输出与所述亮度信息匹配的电流值,以调节所述视频图像的光源亮度。通过设置预制查询表,视频图像的亮度信息可直接与控制信号对应,利用控制信号结合视频图像同步信息,快速动态调节电源驱动电流值,以实现视频图像亮度的快速调节,以实现不同帧图像之间的明暗差别,提高视频图像的对比度,提高了光源亮度的调节效率。(The application discloses a light source brightness adjusting method, a system, an electronic device and a device, wherein the light source brightness adjusting method comprises the following steps: acquiring brightness information of a video image; retrieving the brightness information in a prefabricated look-up table to determine a control signal matched with the brightness information, wherein the prefabricated look-up table comprises various kinds of brightness information and control signals corresponding to the brightness information respectively; and controlling a power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image. Through setting up the prefabricated look-up table, the luminance information of video image can directly correspond with control signal, utilizes control signal combination video image synchronization information, and the quick dynamic adjustment power drive current value to realize the quick adjustment of video image luminance, in order to realize the light and shade difference between the different frame images, improve the contrast of video image, improved the regulation efficiency of light source luminance.)

1. A method for adjusting brightness of a light source, comprising:

acquiring brightness information of a video image;

retrieving the brightness information in a prefabricated look-up table to determine a control signal matched with the brightness information, wherein the prefabricated look-up table comprises various kinds of brightness information and control signals corresponding to the brightness information respectively;

and controlling a power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image.

2. The method of claim 1, prior to said obtaining luminance information for the video image, comprising:

acquiring brightness information of a plurality of sample images;

determining a current value matched with the brightness information of each sample image according to the brightness information of each sample image;

determining a control signal for controlling the power supply system according to the current value;

and recording the control signal corresponding to each brightness information to obtain the prefabricated query table.

3. The method of claim 1, wherein the control signal is a pulse width modulated signal.

4. The method of claim 1, wherein the power system includes a plurality of power supply units, a plurality of the power supply units being looped around, the control signal directly controlling one of the power supply units.

5. The method according to claim 1, wherein the controlling a power supply system to output a current value matched with the brightness information by using the control signal comprises:

sending a control signal of a next frame of video image to the power supply system within a first preset time before the display of the current frame of video image is finished;

and after the current frame video image is displayed and before the next frame video image is displayed, the power supply system outputs a current value matched with the brightness information of the next frame video image.

6. The method of claim 1, wherein retrieving the luminance information in a pre-formed look-up table to determine a control signal matching the luminance information comprises:

judging whether the prefabricated query table comprises the brightness information or not;

if the prefabricated query table comprises the brightness information, determining a control signal corresponding to the brightness information according to the prefabricated query table;

if the prefabricated lookup table does not comprise the brightness information, determining a matched current value according to the brightness information, and determining a control signal for controlling a power supply system according to the current value;

and simultaneously recording the brightness information and the corresponding control signals in the pre-prepared lookup table.

7. A light source brightness adjusting system is characterized by comprising an image processing system and a power supply system which are coupled with each other;

the image processing system acquires brightness information of a video image, and retrieves a preset lookup table according to the brightness information to determine a control signal matched with the brightness information;

and the image processing system controls a power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image.

8. The system of claim 7, wherein the light source brightness adjustment system further comprises a signal distribution unit electrically coupled between the image processing system and a power supply system, the power supply system comprising a plurality of power supply units including a first power supply unit, the image processing system distributing a control signal to each of the power supply units through the signal distribution unit;

the signal distribution unit is an independent unit, or the signal distribution unit and the image processing system are designed in an integrated mode, or the signal distribution unit and the power supply system are designed in an integrated mode.

9. The system of claim 8, wherein the plurality of power supply units each have a control signal input/output interface, the plurality of power supply units are sequentially in electrical signal communication through the control signal input/output interfaces, the image processing system is electrically coupled to the control signal input/output interface of the first power supply unit to output a control signal, and the first power supply unit receives and executes the control signal and simultaneously transmits the received control signal to the control signal input/output interface of the next power supply unit through the control signal input/output interface thereof, thereby realizing signal distribution of the control signal output by the image processing system.

10. An electronic device comprising a memory and a processor coupled to each other, the processor being configured to execute program instructions stored in the memory to implement the method of any of claims 1 to 6.

11. A computer-readable storage medium, on which program data are stored, which program data, when being executed by a processor, carry out the method of any one of claims 1 to 6.

Technical Field

The application belongs to the technical field of light source adjustment, and particularly relates to a light source brightness adjusting method, a light source brightness adjusting system, electronic equipment and a light source brightness adjusting device.

Background

In order to improve the contrast of the video image, the backlight brightness can be adjusted by using a brightness adjusting technology. The continuous innovation and breakthrough of the current projection technology and the lower and lower realization cost, especially the gradual popularization of the laser projector, and part of the large-screen traditional TV for families is slowly replaced by the laser projector. In the prior art, a driving power supply and a chip scheme matched with light sources such as a high-power LED or laser are in a lagging state, and the brightness adjustment speed of the light source is low.

Disclosure of Invention

The application provides a light source brightness adjusting method, a light source brightness adjusting system, electronic equipment and a light source brightness adjusting device, and aims to solve the problem that the light source brightness adjusting speed is low.

In order to solve the technical problem, the application adopts a technical scheme that: a method of adjusting brightness of a light source, comprising: acquiring brightness information of a video image; retrieving the brightness information in a prefabricated look-up table to determine a control signal matched with the brightness information, wherein the prefabricated look-up table comprises various kinds of brightness information and control signals corresponding to the brightness information respectively; and controlling a power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image.

According to an embodiment of the present application, before the acquiring luminance information of the video image, the method includes: acquiring brightness information of a plurality of sample images; determining a current value matched with the brightness information of each sample image according to the brightness information of each sample image; determining a control signal for controlling the power supply system according to the current value; and recording the control signal corresponding to each brightness information to obtain the prefabricated query table.

According to an embodiment of the present application, the control signal is a pulse width modulation signal.

According to an embodiment of the present application, the power supply system includes a plurality of power supply units, the plurality of power supply units are connected in a loop, and the control signal directly controls one of the power supply units.

According to an embodiment of the present application, the controlling the power supply system to output the current value matched with the brightness information by using the control signal includes: sending a control signal of a next frame of video image to the power supply system within a first preset time before the display of the current frame of video image is finished; and after the current frame video image is displayed and before the next frame video image is displayed, the power supply system outputs a current value matched with the brightness information of the next frame video image.

According to an embodiment of the present application, retrieving the brightness information in a pre-made lookup table to determine a control signal matching the brightness information includes: judging whether the prefabricated query table comprises the brightness information or not; if the prefabricated query table comprises the brightness information, determining a control signal corresponding to the brightness information according to the prefabricated query table; if the prefabricated lookup table does not comprise the brightness information, determining a matched current value according to the brightness information, and determining a control signal for controlling a power supply system according to the current value; and simultaneously recording the brightness information and the corresponding control signals in the pre-prepared lookup table.

In order to solve the above technical problem, another technical solution adopted by the present application is: a light source brightness adjusting system comprises an image processing system and a power supply system which are coupled with each other;

the image processing system acquires brightness information of a video image, and retrieves a preset lookup table according to the brightness information to determine a control signal matched with the brightness information; and the image processing system controls a power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image.

According to an embodiment of the present application, the light source brightness adjusting system further includes a signal distributing unit electrically coupled between the image processing system and a power supply system, the power supply system includes a plurality of power supply units including a first power supply unit, and the image processing system distributes a control signal to each of the power supply units through the signal distributing unit;

the signal distribution unit is an independent unit, or the signal distribution unit and the image processing system are designed in an integrated mode, or the signal distribution unit and the power supply system are designed in an integrated mode.

According to an embodiment of the present application, it is a plurality of power supply unit connects in proper order in the ring, a plurality of power supply unit all have a control signal input/encircle and go out the interface, a plurality of power supply unit pass through control signal input/encircle and go out interface signal intercommunication in proper order, image processing system with the control signal input/ring of first power supply unit goes out the interface electric connection with output control signal, first power supply unit is receiving and carrying out control signal in, through its control signal input/ring go out the interface will receive control signal transmission is to next power supply unit's control signal input/ring goes out the interface, thereby it is right to realize image processing system output control signal carries out signal distribution.

In order to solve the above technical problem, the present application adopts another technical solution: an electronic device comprising a memory and a processor coupled to each other, the processor being configured to execute program instructions stored in the memory to implement any of the methods described above.

In order to solve the above technical problem, the present application adopts another technical solution: an apparatus having a storage function, the apparatus storing program data executable to implement any of the methods described above.

The beneficial effect of this application is: this application is through setting up prefabricated look-up table, video image's luminance information can be directly corresponding with control signal, utilize control signal to combine video image synchronization information, quick dynamic adjustment power drive current value, in order to realize the quick adjustment of video image luminance, in order to realize the light and shade difference between the different frame images, improve video image's contrast, need not to analyze luminance information and power drive characteristic again and obtain required current value, and then obtain corresponding control signal, the regulation efficiency of light source luminance has been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic flowchart of an embodiment of a method for adjusting brightness of a light source according to the present application;

FIG. 2 is a flowchart illustrating a method for forming a pre-manufactured lookup table according to an embodiment of a method for adjusting brightness of a light source of the present application;

FIG. 3 is a schematic diagram of a pre-formed look-up table in an embodiment of a method for adjusting brightness of a light source according to the present application;

FIG. 4 is a diagram of a dual PWM signal according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of an embodiment of a system for adjusting brightness of a light source according to the present application;

FIG. 6 is a schematic structural diagram of an embodiment of an electronic device of the present application;

fig. 7 is a schematic structural diagram of an embodiment of the apparatus with a storage function according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a method for adjusting brightness of a light source according to an embodiment of the present application.

An embodiment of the present application provides a method for adjusting brightness of a light source, including the following steps:

s11: luminance information of a video image is acquired.

The image processing system acquires brightness information of a video image, the video image comprises multiple frames of continuous images, the brightness information comprises a base color ratio or a white balance ratio of a light source of each area of each frame of image, and the light source comprises a three-color light source or a white light source.

S12: the luminance information is retrieved in a pre-formed look-up table to determine a control signal that matches the luminance information.

And retrieving the brightness information in a preset lookup table to determine the control signal matched with the brightness information, wherein the preset lookup table comprises various kinds of brightness information and the control signals corresponding to the brightness information respectively.

The preset lookup table is pre-calculated according to the characteristics of the light source and the power supply drive and recorded as a lookup table, the brightness information of the light source corresponding to the video image corresponds to the required control signal one by one in the preset lookup table, and the preset lookup table is provided with index numbers, and further the preset lookup table can also comprise the current value of the power supply system corresponding to the brightness information. Through setting up the prefabricated look-up table, the luminance information of video image can be directly corresponding with control signal, can quick dynamic adjustment light source luminance to realize the light and shade difference between the different frame images, improve the contrast of video image, need not to analyze luminance information and power drive characteristic again and obtain required current value, and then obtain corresponding control signal, improved the regulation efficiency of light source luminance.

In one embodiment, retrieving the luminance information in a pre-formed look-up table to determine a control signal matching the luminance information comprises:

judging whether the prefabricated query table comprises the brightness information or not;

if the prefabricated look-up table comprises the brightness information, determining a control signal corresponding to the brightness information according to the prefabricated look-up table;

if the preset lookup table does not include the brightness information, determining a matched current value according to the brightness information, determining a control signal for controlling the power supply system according to the current value, and simultaneously recording the brightness information and the corresponding control signal in the preset lookup table. Therefore, the control signal corresponding to the brightness information can be continuously determined, and the prefabricated query is continuously updated.

In other embodiments, the brightness information may be further used to calculate a corresponding control signal according to the recorded similar brightness information in the pre-prepared lookup table.

In an embodiment, please refer to fig. 2 and fig. 3, fig. 2 is a schematic flow chart illustrating a method for forming a pre-fabricated lookup table according to an embodiment of a method for adjusting brightness of a light source of the present application; fig. 3 is a schematic diagram of a pre-prepared lookup table in an embodiment of the light source brightness adjusting method of the present application.

Before acquiring the brightness information of the video image, the method for forming the pre-made lookup table comprises the following steps:

s121: luminance information of a plurality of sample images is acquired.

The sample image used in forming the pre-formed look-up table may be a video image in this embodiment, or another image may be used. The plurality of sample images have various kinds of brightness information, the brightness information includes a base color ratio or a white balance ratio of a light source of each region of each frame image, and the more the sample images are, the more detailed the pre-prepared look-up table is.

It should be noted that the same light source or the same type of light source may use the same pre-manufactured look-up table.

S122: from the luminance information of each sample image, a current value matching the luminance information of each sample image is determined.

And determining the current value required by the light source matched with the brightness information of each sample image according to the brightness information of each sample image.

S123: and recording the control signal corresponding to each brightness information to obtain a prefabricated look-up table.

And recording each brightness information of the light source corresponding to a required control signal, and further recording a current value corresponding to each brightness information. And recording and forming a prefabricated look-up table after the brightness information of the light source, the current value of the power supply system and the control signal output by the image processing system are in one-to-one correspondence, and the prefabricated look-up table is provided with index numbers.

S13: and controlling the power supply system to output a current value matched with the brightness information by using the control signal so as to adjust the light source brightness of the video image.

The image processing system utilizes the control signal to control the power supply system to output a current value matched with the brightness information so as to adjust the light source brightness of the video image.

According to an identification mechanism of a Micro Control Unit (MCU) of a power supply system, a rapid control mode is combined, a control signal is determined to be a pulse width modulation signal (PWM), and further, the control signal is in a multi-pulse control mode, and the mode has the characteristic of rapid adjustment. The image processing system transmits PWM with different duty ratios to the power supply system so as to achieve the purpose that the power supply system outputs different current values.

The PWM duty cycle of the multi-pulse control mode is calculated as:

PWM＝sum(T1,T3,…Tn-1)/sum(T1,T2,…,Tn)

or PWM avg (PWM1, PWM2, … PWMn/2)

Preferably, the control signal is a double-pulse control method, and the PWM duty calculation is specifically described below in the double-pulse control method.

Referring to fig. 4, fig. 4 is a schematic diagram of a dual pwm signal according to an embodiment of a method for adjusting brightness of a light source of the present application.

The MCU interrupts according to the 1 st rising edge of the PWM, and starts to count time until the 1 st falling edge is ended, and the time is recorded as T₁At this time, high level; at the same time, the time is counted from the 1 st falling edge to the 2 nd rising edge, which is marked as T₂At this time, the voltage is low; starting from the 2 nd rising edge to the 2 nd falling edge, denoted T₃And is now high. T is₃Can be used for checking and correcting T₁Theoretical T₃And T₁Are equal.

The PWM duty cycle is calculated as: PWM ═ T₁/(T₁+T₂)

E.g. T₁＝10μs，T₂＝23.3μs，PWM＝T₁/(T₁+T₂)＝0.3

In one embodiment, controlling the power supply system to output a current value matched with the brightness information by using the control signal comprises:

and sending a control signal of the next frame of video image to the power supply system within a first preset time before the display of the current frame of video image is finished, wherein the first preset time can be obtained by comprehensive evaluation according to the aspects of power supply response speed, image refresh rate and the like. Specifically, the first predetermined time may be 100 μ s.

And after the current frame video image is displayed and before the next frame video image is displayed, the power supply system outputs a current value matched with the brightness information, so that the brightness of the next frame video image is adjusted, the light and shade difference between different frame images is realized, and the contrast of the video image is improved. Specifically, there is an interval time of 300 μ s between the current frame image and the next frame image.

Specifically, the interval time between the current frame video image and the next frame video image is 300 μ s, the image processing system starts to send a control signal to the power supply system 400 μ s before the next frame video image is displayed, the power supply system starts to adjust the current value in response to the control signal at the time when the current frame video image is displayed completely at 300 μ s before the next frame video image is displayed, and the current is adjusted to be in place within 300 μ s.

Generally, before each frame of video image is played, the power supply system already responds to the control signal and outputs a corresponding current value to perform brightness adjustment. If the control signal corresponding to the current frame video image is not responded within 100us before the display of each frame video image is finished, the brightness adjustment of the next frame video image is started instead of the corresponding brightness adjustment of the current frame video image.

In one embodiment, when the current frame video image is displayed, the image processing system acquires the brightness information of the next frame video image and determines the control signal of the next frame video image. In other embodiments, before the video image is displayed, the overall brightness information may be obtained in advance, and the control signals of all the images of the video image may be determined in advance, where the control signals may correspond to the playing time of each frame of the video image.

In an embodiment, the light source brightness adjusting system further comprises a signal distributing unit electrically coupled between the image processing system and the power supply system, the power supply system comprises a plurality of power supply units, and the control signal is distributed to each power supply unit through the signal distributing unit to realize control over each power supply unit.

The signal distribution unit may be a separate unit; can also be integrated in the image processing system, i.e. designed integrally with the image processing system; or may be integrated in the power supply system, i.e. designed integrally with the power supply system.

Alternatively, the function of the signal distribution unit may be realized by electrically connecting the image processing system to each power supply unit.

Specifically, the image processing system can directly input the control signal to one of the power supply units electrically connected with the image processing system, and the power supply units in the power supply system are sequentially connected in a loop mode, so that the power supply units can simultaneously respond to the rapid modulation of the control signal. The specific signal transmission process is as follows: a plurality of power supply units in the power supply system are provided with a control signal input/loop-out interface, and the control signal input/loop-out interfaces of the power supply units have the same function. The image processing system is directly electrically connected with a control signal input/loop-out interface of one power supply unit to output a control signal, the power supply unit is defined as a first power supply unit, other power supply units are sequentially in electric signal communication through the control signal input/loop-out interface and are sequentially defined as a second power supply unit, a third power supply unit and the like, namely, the first power supply unit is electrically connected with the control signal input/loop-out interface of the second power supply unit through the control signal input/loop-out interface of the first power supply unit, the second power supply unit is electrically connected with the control signal input/loop-out interface of the third power supply unit through the control signal input/loop-out interface of the second power supply unit, and the like. The first power supply unit receives a control signal, transmits the received control signal to a control signal input/loop-out interface of the second power supply unit through the control signal input/loop-out interface thereof while executing the control signal, transmits the received control signal to a control signal input/loop-out interface of a third power supply unit through the control signal input/loop-out interface thereof while receiving and executing the control signal, receives the control signal by the third power supply unit, and so on until all the power supply units receive the control signal, thereby realizing signal distribution of the control signal output by the image processing system. By adopting a loop connection control mode, a plurality of power supply units can simultaneously respond to the rapid modulation of control signals; in addition, the mode of ring joint control can also realize that a plurality of power panels adopt the same circuit structure, and power supply unit can share one set of mould, and the connection position can be exchanged between the power supply unit, practices thrift the cost and the connection mode is changeed the operation.

According to the method and the device, the prefabricated query table is arranged, the brightness information of the video image can directly correspond to the control signal, the PWM control signal is utilized, the video image synchronous information is combined, the power supply driving current value is rapidly and dynamically adjusted, and the rapid adjustment of the brightness of the video image is achieved. The power supply system in the application adopts a ring connection control mode, synchronous control of a plurality of power supply units can be realized, and the light source brightness adjusting method is suitable for brightness adjustment of light sources such as high-power LEDs or lasers.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a light source brightness adjusting system according to the present application.

The present application further provides a light source brightness adjusting system 20, which includes an image processing system 21 and a power system 22 coupled to each other. Wherein the image processing system 21 obtains luminance information of the video image and retrieves the pre-made look-up table based on the luminance information to determine the control signal matching the luminance information. The image processing system 21 controls the power supply system 22 to output a current value matching the luminance information using the control signal to adjust the light source luminance of the video image.

The light source brightness adjusting system 20 further comprises a signal distributing unit electrically coupled between the image processing system 21 and the power supply system 22, the power supply system 22 comprises a plurality of power supply units 221, and a control signal is distributed to each power supply unit 221 through the signal distributing unit to realize control over each power supply unit 221.

The signal distribution unit may be a separate unit; can also be integrated in the image processing system, i.e. designed integrally with the image processing system; or may be integrated in the power supply system, i.e. designed integrally with the power supply system.

Alternatively, in the present embodiment, the function of the signal distribution unit may be implemented by electrically connecting the image processing system 21 to each power supply unit 221.

In one embodiment, each of the power units 221 in the power system 22 has a control signal input/output interface, and the control signal input/output interfaces of the power units have the same function. The image processing system 21 is directly electrically connected to a control signal input/loop-out interface of one power supply unit 221 to output a control signal, the power supply unit 221 is defined as a first power supply unit, a plurality of power supply units 221 in the power supply system 22 are sequentially connected to each other by electrical signals through the control signal input/loop-out interface to realize sequential loop connection, and are sequentially defined as a second power supply unit, a third power supply unit and the like, that is, the first power supply unit is electrically connected to a control signal input/loop-out interface of the second power supply unit through the control signal input/loop-out interface thereof, the second power supply unit is electrically connected to a control signal input/loop-out interface of the third power supply unit through the control signal input/loop-out interface thereof, and so on. The first power supply unit receives a control signal input by the image processing system 21 through the control signal input/loop-out interface, and transmits the received control signal to the control signal input/loop-out interface of the second power supply unit through the control signal input/loop-out interface while executing the control signal, and the second power supply unit transmits the received control signal to the control signal input/loop-out interface of the third power supply unit through the control signal input/loop-out interface while receiving and executing the control signal, and the third power supply unit receives the control signal, and so on until all the power supply units 221 receive the control signal, thereby realizing signal distribution of the control signal output by the image processing system 21.

This application is through setting up prefabricated look-up table, video image's luminance information can be directly correspond with control signal, and utilize control signal to combine video image synchronization information, quick dynamic adjustment power drive current value, in order to realize the quick adjustment of video image luminance, in order to realize the light and shade difference between the different frame images, improve video image's contrast, need not to analyze luminance information and power drive characteristic again and obtain required current value, and then obtain corresponding control signal, the regulation efficiency of light source luminance has been improved. In addition, the power supply system 22 in the present application adopts a loop connection control mode, so that synchronous control of a plurality of power supply units 221 can be realized; the ring connection control mode can also realize that a plurality of power panels adopt the same circuit structure, the power supply units 221 can share one set of die, the connection positions among the power supply units 221 can be interchanged, the cost is saved, and the connection mode is easier to operate. The light source brightness adjusting system 20 is suitable for brightness adjustment of light sources such as high-power LEDs or lasers.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of an electronic device according to the present application.

The present application further provides an electronic device 30, which includes a memory 31 and a processor 32 coupled to each other, wherein the processor 32 is configured to execute program instructions stored in the memory 31 to implement the light source brightness adjustment method of any of the above embodiments. In one particular implementation scenario, the electronic device 30 may include, but is not limited to: a microcomputer, a server, and the electronic device 30 may also include a mobile device such as a notebook computer, a tablet computer, and the like, which is not limited herein. Specifically, the processor 32 is configured to control itself and the memory 31 to implement the steps of any of the embodiments of the light source brightness adjusting method described above. The processor 32 may also be referred to as a CPU (Central Processing Unit). The processor 32 may be an integrated circuit chip having signal processing capabilities. The Processor 32 may also be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In addition, the processor 32 may be commonly implemented by an integrated circuit chip.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a device with a memory function according to the present application.

Yet another embodiment of the present application provides a computer-readable storage medium 40, on which program data 41 are stored, and when executed by a processor, the program data 41 implement the method for adjusting brightness of a light source according to any of the above embodiments. The control signal is combined with the video image synchronous information, and the power supply driving current value is rapidly and dynamically adjusted to achieve rapid adjustment of the video image brightness.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a module or a unit is merely one type of logical division, and an actual implementation may have another division, for example, a unit or a component may be combined or integrated with another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on network elements. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium 40. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium 40 and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium 40 includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.