Display brightness control method, driving chip, display device and electronic device

Abstract

The invention relates to a display brightness control method, a driving chip, a display device and an electronic device. The method comprises the following steps: determining the average brightness of a current frame of to-be-displayed image; judging whether to start an automatic current limiting function or not based on the average brightness of the current frame of to-be-displayed image; and reducing the brightness of the to-be-displayed image of the current frame in response to starting of the automatic current limiting function. According to the embodiment of the invention, by determining the average brightness of the to-be-displayed image of the current frame, judging whether the automatic current limiting function is started or not based on the average brightness of the to-be-displayed image of the current frame, and reducing the brightness of the to-be-displayed image of the current frame in response to the starting of the automatic current limiting function, the ACL function can be effective while the image of the current frame is refreshed; therefore, the problem of one-frame delay can be eliminated, and power consumption is greatly reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display brightness control method, a driving chip, a display device, and an electronic device. Background Art

[0002] Automatic current limitation (ACL) is a very important function in display driver chips. The ACL function can automatically reduce the brightness when the screen presents a high-brightness image according to the current display brightness and settings, so as to avoid the increase in power consumption caused by excessive current, and even prevent problems such as overheating or burning of the screen. Although the ACL function is powerful, its premise is to obtain the brightness of the image. However, in the current display control scheme, the calculation of image brightness usually needs to wait until a whole frame of the image is refreshed. Therefore, the brightness adjustment based on ACL often has to wait until the next frame of the image to take effect, which will bring about the "one frame delay" problem and may cause power consumption to increase. Summary of the invention

[0003] In view of this, the present disclosure proposes a display brightness control method, a driving chip, a display device, and an electronic device.

[0004] According to one aspect of the present disclosure, a display brightness control method is provided. The method comprises:

[0005] Determine the average brightness of the image to be displayed in the current frame;

[0006] Based on the average brightness of the image to be displayed in the current frame, determine whether to turn on the automatic current limiting function;

[0007] In response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0008] In a possible implementation, determining the average brightness of the image to be displayed in the current frame includes:

[0009] In response to the mean value reading mode being turned on, the average brightness of the current frame of the image to be displayed stored in the register is obtained, and the average brightness of the current frame of the image to be displayed stored in the register is sent to the register by the host computer;

[0010] In response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced, including:

[0011] In response to the averaging read mode being turned on and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0012] In a possible implementation, determining the average brightness of the image to be displayed in the current frame includes:

[0013] In response to the average reading mode being turned off and the presence of a refresh signal, calculating the average brightness of the image to be displayed in the current frame;

[0014] The method further includes:

[0015] In response to the averaging read mode being turned off, the refresh signal being present, and the automatic current limiting function being turned on, the brightness of the next frame of an image to be displayed is reduced.

[0016] In a possible implementation, determining the average brightness of the image to be displayed in the current frame includes:

[0017] In response to the mean value reading mode being turned off and the absence of a refresh signal, taking the average brightness of the last frame of the image to be displayed as the average brightness of the current frame of the image to be displayed;

[0018] In response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced, including:

[0019] In response to the averaging read mode being turned off, the refresh signal not being present, and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0020] In a possible implementation, the refresh signal is generated by the host computer when the current frame of the image to be displayed is different from the previous frame of the image to be displayed.

[0021] In a possible implementation, judging whether to enable the automatic current limiting function based on the average brightness of the image to be displayed in the current frame includes:

[0022] When the average brightness of the image to be displayed in the current frame is greater than a preset threshold, the automatic current limiting function is turned on;

[0023] When the average brightness of the image to be displayed in the current frame is not greater than a preset threshold, the automatic current limiting function is turned off.

[0024] In a possible implementation, the method further includes:

[0025] In response to the automatic current limiting function being turned off, display is performed based on the brightness of the image to be displayed in the current frame.

[0026] According to another aspect of the present disclosure, a display brightness control device is provided. The device comprises:

[0027] A determination module, used to determine the average brightness of the image to be displayed in the current frame;

[0028] A judgment module, used to judge whether to turn on the automatic current limiting function based on the average brightness of the image to be displayed in the current frame;

[0029] The first reducing module is used to reduce the brightness of the image to be displayed in the current frame in response to the automatic current limiting function being turned on.

[0030] In a possible implementation, a module is determined to:

[0031] In response to the mean value reading mode being turned on, the average brightness of the current frame of the image to be displayed stored in the register is obtained, and the average brightness of the current frame of the image to be displayed stored in the register is sent to the register by the host computer;

[0032] The first lowering module is used to:

[0033] In response to the averaging read mode being turned on and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0034] In a possible implementation, a module is determined to:

[0035] In response to the average reading mode being turned off and the presence of a refresh signal, calculating the average brightness of the image to be displayed in the current frame;

[0036] The device also includes:

[0037] The second reduction module is used to reduce the brightness of the next frame of the image to be displayed in response to the mean value reading mode being turned off, the refresh signal being present and the automatic current limiting function being turned on.

[0038] In a possible implementation, a module is determined to:

[0039] In response to the mean value reading mode being turned off and the absence of a refresh signal, taking the average brightness of the last frame of the image to be displayed as the average brightness of the current frame of the image to be displayed;

[0040] The first reduction module is used to:

[0041] In response to the averaging read mode being turned off, the refresh signal not being present, and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0042] In a possible implementation, the refresh signal is generated by the host computer when the current frame of the image to be displayed is different from the previous frame of the image to be displayed.

[0043] In a possible implementation, the determination module is used to:

[0044] When the average brightness of the image to be displayed in the current frame is greater than a preset threshold, the automatic current limiting function is turned on;

[0045] When the average brightness of the image to be displayed in the current frame is not greater than a preset threshold, the automatic current limiting function is turned off.

[0046] In a possible implementation, the device further includes:

[0047] The display module is used for displaying based on the brightness of the image to be displayed in the current frame in response to the automatic current limiting function being turned off.

[0048] According to another aspect of the present disclosure, a driver chip is provided. The driver chip includes:

[0049] An automatic current limiting ACL module is used to obtain the current frame image to be displayed from the host computer and execute the above method;

[0050] Register, used to store the average brightness of the current frame to be displayed sent by the host computer.

[0051] According to another aspect of the present disclosure, a display device is provided, comprising a plurality of display units and at least one of the above-mentioned display brightness control devices.

[0052] In one possible implementation, the display unit includes a display panel, and the display panel includes at least one of a liquid crystal display panel, a micro light emitting diode display panel, a light emitting diode display panel, a mini light emitting diode display panel, a quantum dot light emitting diode display panel, an organic light emitting diode display panel, a cathode ray tube display panel, a digital light processing display panel, a field emission display panel, a plasma display panel, an electrophoretic display panel, an electrowetting display panel and a small pitch display panel.

[0053] According to another aspect of the present disclosure, an electronic device is provided, comprising the above display device.

[0054] According to another aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the above method when executing the instructions stored in the memory.

[0055] According to another aspect of the present disclosure, a non-volatile computer-readable storage medium is provided, on which computer program instructions are stored, wherein the computer program instructions implement the above method when executed by a processor.

[0056] According to another aspect of the present disclosure, a computer program product is provided, including a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above method.

[0057] According to the embodiment of the present disclosure, by determining the average brightness of the current frame image to be displayed, judging whether to turn on the automatic current limiting function based on the average brightness of the current frame image to be displayed, and in response to the automatic current limiting function being turned on, reducing the brightness of the current frame image to be displayed, the ACL function can be implemented while refreshing the current frame image, thereby eliminating the problem of one frame delay and greatly reducing power consumption. Other features and aspects of the present disclosure will become clear from the detailed description of exemplary embodiments with reference to the accompanying drawings below. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0059] Figure 1 A schematic diagram showing an application scenario according to an embodiment of the present disclosure.

[0060] Figure 2 A flow chart of a display brightness control method according to an embodiment of the present disclosure is shown.

[0061] Figure 3 A schematic diagram showing a method of starting a mean value reading mode according to an embodiment of the present disclosure is shown.

[0062] Figure 4 A structural diagram of a display brightness control device according to an embodiment of the present disclosure is shown.

[0063] Figure 5 A block diagram of an electronic device 1900 according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0064] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0065] In the description of the present disclosure, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0068] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0069] Automatic current limitation (ACL) is a very important function in display driver chips. The ACL function can automatically reduce the brightness when the screen presents a high-brightness image according to the current display brightness and settings, so as to avoid the increase in power consumption caused by excessive current, and even prevent problems such as overheating or burning of the screen. Although the ACL function is powerful, its premise is to obtain the brightness of the image. However, in the current display control scheme, the calculation of image brightness usually needs to wait until a whole frame of the image is refreshed. Therefore, the brightness adjustment based on ACL often has to wait until the next frame of the image to take effect, which will bring about the "one frame delay" problem and may cause power consumption to increase.

[0070] In view of this, the present disclosure provides a display brightness control method, device, display device and electronic device. The display brightness control method of the embodiment of the present disclosure determines the average brightness of the image to be displayed in the current frame, determines whether to turn on the automatic current limiting function based on the average brightness of the image to be displayed in the current frame, and reduces the brightness of the image to be displayed in the current frame in response to the automatic current limiting function being turned on, so that the ACL function can be effective while refreshing the current frame image, thereby eliminating the problem of one frame delay and greatly reducing power consumption.

[0071] Figure 1 A schematic diagram showing an application scenario according to an embodiment of the present disclosure is shown. The display brightness control system of the embodiment of the present disclosure can be deployed on a display driver chip, such as Figure 1 As shown, the display brightness control system can receive the current frame to be displayed image sent by the host computer (Application Processor, AP), and the AP can refer to the processor of the terminal device. When the ACL function needs to be turned on, the display brightness control system can reduce the brightness of the current frame to be displayed, and obtain the current frame to be displayed after the brightness is reduced and output it to the display screen for display on the display screen.

[0072] Figure 2 FIG. 1 is a flow chart showing a method for controlling display brightness according to an embodiment of the present disclosure. The method can be used for display driver chips, such as Figure 2 As shown, the method includes:

[0073] Step S201, determining the average brightness of the image to be displayed in the current frame.

[0074] The current frame image to be displayed may be sent by the host computer. The average brightness of the image to be displayed can generally be obtained by calculating the sum of all pixels and dividing it by the total number of pixels. If you want to obtain the average brightness of the current frame image to be displayed in this way, you need to refresh a whole frame of the image (that is, read the pixel values ​​of the image one by one) to get the average brightness. If the average brightness is too high and the ACL function needs to be used to lower the brightness, it can only be applied in the next frame, which will cause a large current in the current frame, thereby increasing power consumption.

[0075] Therefore, in the embodiment of the present disclosure, a selection method of the mean reading mode is added to avoid the problem of one frame delay. In step S201, it is possible to:

[0076] In response to the average reading mode being turned on, the average brightness of the image to be displayed in the current frame stored in the register is obtained.

[0077] The average brightness of the current frame to be displayed stored in the register can be sent to the register by the host computer. The average brightness can be calculated by the host computer for the current frame to be displayed. The host computer can synchronously write the average brightness into the register when sending the current frame to be displayed.

[0078] Figure 3 FIG. 2 is a schematic diagram showing a method of starting a mean value reading mode according to an embodiment of the present disclosure. Figure 3 As shown, the AP can send the current frame of the image to be displayed to the ACL module, and write the average brightness of the current frame of the image to be displayed into the register. MUX can be a selection register used to determine whether the mean reading mode is turned on. When the mean reading mode is turned on, the ACL module can read the average brightness of the current frame of the image to be displayed written by the AP from the register outside the ACL module to determine whether the ACL function needs to be turned on.

[0079] The average brightness of the image to be displayed in the current frame is written into the register in advance through AP. When the average reading mode is turned on, such as Figure 3 The mean calculation module in the image processing unit no longer needs to calculate the average brightness of the current frame, thus saving the power consumption of addition and division calculations. If the calculation result shows that the ACL function needs to be turned on to lower the brightness, the brightness can be lowered in the current frame because the calculation steps are saved.

[0080] When the mean reading mode is turned off, in order to reduce the high power consumption caused by the mean calculation module calculating the average brightness frame by frame, the present disclosure introduces a refresh signal, wherein the refresh signal can be generated by the host computer when the current frame image to be displayed is different from the previous frame image to be displayed. The average brightness needs to be calculated only when the refresh signal exists, so that the mean calculation module does not need to calculate the average brightness frame by frame.

[0081] In step S201, it is also possible to:

[0082] In response to the average reading mode being turned off and the presence of a refresh signal, the average brightness of the image to be displayed in the current frame is calculated.

[0083] See also Figure 3 At this time, the average brightness of the current frame to be displayed can be calculated by the mean value calculation module. The calculation method can be to read the pixel value of each pixel in the current frame to be displayed, sum it and divide it by the total number of pixels to obtain the average brightness. The average brightness can be sent to the brightness adjustment module through the selection register MUX.

[0084] In step S201, it is also possible to:

[0085] In response to the mean value reading mode being turned off and the absence of a refresh signal, the average brightness of the last frame of the image to be displayed is used as the average brightness of the current frame of the image to be displayed.

[0086] For example, when the current frame to be displayed is the same as the previous frame to be displayed, the average brightness of the previous frame to be displayed can be reused, so that the mean calculation module does not need to calculate frame by frame again. In this way, the power consumption caused by the frame by frame calculation of the mean calculation module can be reduced.

[0087] Step S202 : judging whether to enable the automatic current limiting function based on the average brightness of the image to be displayed in the current frame.

[0088] The ACL function can be used to reduce the brightness of the image to be displayed when the average brightness is greater than a preset threshold, so as to reduce power consumption.

[0089] In step S202, it is possible to:

[0090] When the average brightness of the image to be displayed in the current frame is greater than a preset threshold, the automatic current limiting function is turned on;

[0091] When the average brightness of the image to be displayed in the current frame is not greater than a preset threshold, the automatic current limiting function is turned off.

[0092] The preset threshold can be set based on needs, so as to prevent the overall brightness of the display from being too high, thereby reducing the overall current, avoiding problems such as screen burn-in caused by excessive current, and reducing power consumption.

[0093] The method may further include:

[0094] In response to the automatic current limiting function being turned off, display is performed based on the brightness of the image to be displayed in the current frame.

[0095] That is, when the average brightness of the image to be displayed in the current frame is not greater than the preset threshold, there is no need to adjust the brightness.

[0096] Step S203 , in response to the automatic current limiting function being turned on, reducing the brightness of the image to be displayed in the current frame.

[0097] In step S203, you can:

[0098] In response to the averaging read mode being turned on and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0099] When the mean reading mode is turned on, since there is no need to calculate the average brightness of the current frame at this time, if the average brightness is too high and it is necessary to reduce the brightness based on the ACL function, the ACL function can be implemented from the current frame without delaying to the next frame. The method of reducing the brightness of the image to be displayed in the current frame based on the ACL function can be implemented based on the existing technology, and this application does not limit this.

[0100] According to the embodiment of the present disclosure, by determining the average brightness of the image to be displayed in the current frame, based on the average brightness of the image to be displayed in the current frame, it is determined whether to turn on the automatic current limiting function, and in response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced. The ACL function can be enabled while refreshing the current frame image, thereby eliminating the problem of one frame delay and greatly reducing power consumption.

[0101] In step S203, it is also possible to:

[0102] In response to the averaging read mode being turned off, the refresh signal not being present, and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0103] At this time, there is no refresh signal, and the average brightness can reuse the result of the previous frame. In this case, the mean calculation module does not need to read the pixel value pixel by pixel. Therefore, the ACL function can also be implemented from the current frame without delaying to the next frame.

[0104] The method may further include:

[0105] In response to the averaging read mode being turned off, the refresh signal being present, and the automatic current limiting function being turned on, the brightness of the next frame of an image to be displayed is reduced.

[0106] At this time, due to the presence of a refresh signal, the average brightness is calculated by the mean calculation module after reading the pixel values ​​pixel by pixel. In this case, the ACL function can be implemented starting from the next frame of the image, that is, the brightness of the image to be displayed can be gradually reduced starting from the next frame until the average brightness is no greater than the above-mentioned preset threshold.

[0107] The overall process of the display brightness control method of the embodiment of the present disclosure is as follows:

[0108] When receiving the current frame image to be displayed sent by the AP, it can be determined first whether the mean reading mode is turned on; when the mean reading mode is turned on, the average brightness of the current frame image to be displayed is obtained from the external register; when the mean reading mode is turned off, it can be determined whether there is a refresh signal in the current frame; when there is a refresh signal, the average brightness of the current frame image to be displayed is calculated; when there is no refresh signal, the average brightness of the previous frame image to be displayed is used as the average brightness of the current frame image to be displayed.

[0109] After determining the average brightness of the current frame of the image to be displayed, it can be determined whether to turn on the ACL function based on the average brightness; when the ACL function is turned off, the brightness of the current frame of the image to be displayed can be adjusted; when the ACL function is turned on, it can be determined whether to turn on the mean reading mode; when the mean reading mode is turned on, the brightness of the current frame of the image to be displayed is reduced; when the mean reading mode is turned off, it is determined whether there is a refresh signal; when there is a refresh signal, the brightness of the next frame of the image to be displayed is reduced; when there is no refresh signal, the brightness of the current frame of the image to be displayed is reduced.

[0110] The specific order of judging whether the mean reading mode is turned on, whether there is a refresh signal in the current frame, whether the ACL function is turned on, etc. can also be adjusted as needed, and the present disclosure does not impose any restrictions on this.

[0111] Figure 4 FIG. 2 shows a structural diagram of a display brightness control device according to an embodiment of the present disclosure. Figure 4 As shown, the device comprises:

[0112] A determination module 401 is used to determine the average brightness of the image to be displayed in the current frame;

[0113] A judgment module 402, used to judge whether to turn on the automatic current limiting function based on the average brightness of the image to be displayed in the current frame;

[0114] The first reducing module 403 is used to reduce the brightness of the image to be displayed in the current frame in response to the automatic current limiting function being turned on.

[0115] In a possible implementation, the determination module 401 is configured to:

[0116] In response to the mean value reading mode being turned on, the average brightness of the current frame of the image to be displayed stored in the register is obtained, and the average brightness of the current frame of the image to be displayed stored in the register is sent to the register by the host computer;

[0117] The first reducing module 403 is configured to reduce the brightness of the image to be displayed in the current frame in response to the mean value reading mode being turned on and the automatic current limiting function being turned on.

[0118] In a possible implementation, the determination module 401 is configured to:

[0119] In response to the average reading mode being turned off and the presence of a refresh signal, calculating the average brightness of the image to be displayed in the current frame;

[0120] The device also includes:

[0121] The second reduction module is used to reduce the brightness of the next frame of the image to be displayed in response to the mean value reading mode being turned off, the refresh signal being present and the automatic current limiting function being turned on.

[0122] In a possible implementation, the determination module 401 is configured to:

[0123] In response to the mean value reading mode being turned off and the absence of a refresh signal, taking the average brightness of the last frame of the image to be displayed as the average brightness of the current frame of the image to be displayed;

[0124] The first reducing module 403 is used to:

[0125] In response to the averaging read mode being turned off, the refresh signal not being present, and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

[0126] In a possible implementation, the refresh signal is generated by the host computer when the current frame of the image to be displayed is different from the previous frame of the image to be displayed.

[0127] In a possible implementation, the determination module 402 is configured to:

[0128] When the average brightness of the image to be displayed in the current frame is greater than a preset threshold, the automatic current limiting function is turned on;

[0129] When the average brightness of the image to be displayed in the current frame is not greater than a preset threshold, the automatic current limiting function is turned off.

[0130] In a possible implementation, the device further includes:

[0131] The display module is used for displaying based on the brightness of the image to be displayed in the current frame in response to the automatic current limiting function being turned off.

[0132] According to the embodiment of the present disclosure, by determining the average brightness of the image to be displayed in the current frame, based on the average brightness of the image to be displayed in the current frame, it is determined whether to turn on the automatic current limiting function, and in response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced. The ACL function can be enabled while refreshing the current frame image, thereby eliminating the problem of one frame delay and greatly reducing power consumption.

[0133] According to another aspect of the present disclosure, a driver chip is provided. The structure of the driver chip can be seen in Figure 3 For example, Figure 3 As shown, the driver chip includes:

[0134] The ACL module is used to obtain the current frame image to be displayed from the host computer and execute the above display brightness control method;

[0135] Register, used to store the average brightness of the current frame to be displayed sent by the host computer.

[0136] According to another aspect of the present disclosure, a display device is provided, comprising a plurality of display units and at least one of the above-mentioned display brightness control devices.

[0137] In one possible implementation, the display unit includes a display panel, and the display panel includes at least one of a liquid crystal display panel, a micro light emitting diode display panel, a light emitting diode display panel, a mini light emitting diode display panel, a quantum dot light emitting diode display panel, an organic light emitting diode display panel, a cathode ray tube display panel, a digital light processing display panel, a field emission display panel, a plasma display panel, an electrophoretic display panel, an electrowetting display panel and a small pitch display panel.

[0138] According to another aspect of the present disclosure, an electronic device is provided, comprising the above display device.

[0139] According to another aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the above method when executing the instructions stored in the memory.

[0140] According to another aspect of the present disclosure, a non-volatile computer-readable storage medium is provided, on which computer program instructions are stored, wherein the computer program instructions implement the above method when executed by a processor.

[0141] According to another aspect of the present disclosure, a computer program product is provided, including a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above method.

[0142] Exemplarily, the electronic devices in this embodiment include but are not limited to desktop computers, televisions, mobile devices with large screens such as mobile phones, tablet computers, and other common electronic devices that require multiple chips to be cascaded to achieve driving.

[0143] Exemplarily, the electronic device may also be a user equipment (UE), a mobile device, a user terminal, a terminal, a handheld device, a computing device or a vehicle-mounted device, etc. Exemplarily, some examples of terminals are: a display, a smart phone or a portable device, a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile Internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control (Industrial Control), a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid (Smart Grid), a wireless terminal in transportation safety (Transportation Safety), a wireless terminal in smart city (Smart City), a wireless terminal in smart home (Smart Home), a wireless terminal in Internet of Vehicles, etc. For example, the server may be a local server or a cloud server.

[0144] Figure 5 1 is a block diagram of an electronic device 1900 according to an embodiment of the present disclosure. For example, the electronic device 1900 may be provided as a server or a terminal device. Figure 5 , the electronic device 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions executable by the processing component 1922, such as an application. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above method.

[0145] The electronic device 1900 may also include a power supply component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input / output (I / O) interface 1958. The electronic device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0146] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 1932 including computer program instructions, which can be executed by the processing component 1922 of the electronic device 1900 to perform the above method.

[0147] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

[0148] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0149] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0150] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to multiple embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of the module, program segment or instruction includes one or more executable instructions for realizing the specified logical function. In some alternative implementations, the function marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of special hardware and computer instructions.

[0151] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A display brightness control method, characterized in that: The method comprises: Determine the average brightness of the image to be displayed in the current frame; Based on the average brightness of the image to be displayed in the current frame, determining whether to enable the automatic current limiting function; In response to the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

2. The method according to claim 1, characterized in that Determining the average brightness of the image to be displayed in the current frame includes: In response to the mean value reading mode being turned on, the average brightness of the current frame of the image to be displayed stored in the register is obtained, and the average brightness of the current frame of the image to be displayed stored in the register is sent to the register by the host computer; In response to the automatic current limiting function being turned on, reducing the brightness of the image to be displayed in the current frame includes: In response to the averaging reading mode being turned on and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

3. The method according to claim 1, characterized in that Determining the average brightness of the image to be displayed in the current frame includes: In response to the average reading mode being turned off and the presence of a refresh signal, calculating the average brightness of the image to be displayed in the current frame; The method further comprises: In response to the averaging read mode being turned off, the refresh signal being present and the automatic current limiting function being turned on, the brightness of the next frame of the image to be displayed is reduced.

4. The method according to claim 3, characterized in that Determining the average brightness of the image to be displayed in the current frame includes: In response to the mean value reading mode being turned off and the absence of a refresh signal, taking the average brightness of the last frame of the image to be displayed as the average brightness of the current frame of the image to be displayed; In response to the automatic current limiting function being turned on, reducing the brightness of the image to be displayed in the current frame includes: In response to the averaging read mode being turned off, the refresh signal not being present, and the automatic current limiting function being turned on, the brightness of the image to be displayed in the current frame is reduced.

5. The method according to claim 3, characterized in that: The refresh signal is generated by the host computer when the current frame of image to be displayed is different from the previous frame of image to be displayed.

6. The method according to claim 1, characterized in that The determining whether to enable the automatic current limiting function based on the average brightness of the image to be displayed in the current frame includes: When the average brightness of the image to be displayed in the current frame is greater than a preset threshold, turning on the automatic current limiting function; When the average brightness of the image to be displayed in the current frame is not greater than a preset threshold, the automatic current limiting function is turned off.

7. The method according to claim 1, characterized in that The method further comprises: In response to the automatic current limiting function being turned off, display is performed based on the brightness of the image to be displayed in the current frame.

8. A driver chip, characterized in that: The driver chip comprises: An automatic current limiting ACL module, used for obtaining the current frame to be displayed from the host computer, and executing the method according to any one of claims 1-7; Register, used to store the average brightness of the current frame to be displayed sent by the host computer.

9. A display device, characterized in that: The device comprises a plurality of display units and at least one driving chip according to claim 8.

10. The display device according to claim 9, characterized in that The display unit includes a display panel, and the display panel includes at least one of a liquid crystal display panel, a micro light emitting diode display panel, a light emitting diode display panel, a mini light emitting diode display panel, a quantum dot light emitting diode display panel, an organic light emitting diode display panel, a cathode ray tube display panel, a digital light processing display panel, a field emission display panel, a plasma display panel, an electrophoretic display panel, an electrowetting display panel and a small pitch display panel.

11. An electronic device comprising the display device according to claim 9 or 10.

12. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to implement the method described in any one of claims 1 to 7 when executing the instructions stored in the memory.

13. A non-volatile computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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