Control method and device, dimming controller and display equipment

Abstract

The invention relates to the technical field of display, in particular to a control method and device, a dimming controller and display equipment, which are used for reducing the power consumption of a color backlight unit without influencing the data display of the display equipment. The method comprises the following steps: acquiring cumulative count values of K channel states respectively corresponding to N color channels; and determining a target cumulative count value corresponding to each color channel, determining a channel state corresponding to the target cumulative count value as a final channel state of the corresponding color channel, and according to the final channel state corresponding to the N color channels, adjusting operation parameters of each light emitting unit corresponding to the color channels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a control method, device, dimming controller and display equipment. Background Art

[0002] With the development of technology, display devices have become important components of many electronic devices. Display devices are usually composed of a liquid crystal panel and a backlight unit (BLU). The BLU is located under the liquid crystal panel and provides light source to illuminate the liquid crystal panel.

[0003] At present, the color local dimming backlight unit can light up multiple colors in one dimming area, expand the color gamut range, and no longer use traditional color filters, which not only reduces the cost of display devices, but also achieves more advanced performance in color gamut performance. Therefore, how to reduce the power consumption of the color backlight unit without affecting the data display of the display device is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a control method, an apparatus, a dimming controller and a display device to reduce the power consumption of a color backlight unit without affecting the data display of the display device.

[0005] The specific technical solutions provided by the embodiments of this application are as follows: In a first aspect, a control method is provided, the method comprising: Obtain the cumulative count values ​​of the K channel states corresponding to the N color channels, respectively, where N and K are integers greater than or equal to 2; Determine the target cumulative count value corresponding to each color channel respectively, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel; According to the final channel states corresponding to the N color channels, the operating parameters of the light-emitting units corresponding to the color channels are adjusted respectively.

[0006] In a possible embodiment, obtaining the cumulative count values ​​of K channel states corresponding to each of the N color channels includes: Count the number of K channel states corresponding to each of the N color channels; The number of times corresponding to each channel state is taken as the corresponding cumulative count value, and the cumulative count values ​​of the K channel states corresponding to the N color channels are obtained.

[0007] In a possible embodiment, obtaining the cumulative count values ​​of K channel states corresponding to each of the N color channels includes: Determine the acquisition time period of the channel status; According to the acquisition time period, the accumulated count values ​​of the K channel states corresponding to the N color channels are obtained.

[0008] By using the above method and taking the acquisition time period into consideration, the operating state of each light-emitting unit can be determined more accurately.

[0009] In an optional embodiment, before obtaining the accumulated count values ​​of the K channel states corresponding to the N color channels, the method further includes: For any color channel among the N color channels, perform the following steps: Receiving output parameters of each light-emitting unit in a color channel; According to the parameter range and the output parameters of each light-emitting unit, the operating state of each light-emitting unit is determined respectively, and the operating state is used as the channel state of the color channel; The channel state determined each time is cumulatively counted to obtain the cumulative count values ​​of the K channel states respectively.

[0010] Through the above method, the channel state of the color channel and the cumulative count value of each channel state are determined according to the output parameter of each light-emitting unit, so that the channel state of each color channel can be reflected more accurately.

[0011] In an optional embodiment, the operating state of each light emitting unit is determined according to the parameter range and the output parameter of each light emitting unit, including: If the output parameter of the light-emitting unit is greater than the maximum value of the parameter range, it is determined that the operating state of the light-emitting unit is an oversufficient state; If the output parameter of the light-emitting unit is less than the minimum value of the parameter range, it is determined that the operating state of the light-emitting unit is an insufficient state; If the output parameter of the light-emitting unit is within the parameter range, it is determined that the operating state of the light-emitting unit is a stable state.

[0012] By using the above method, the output parameter is compared with the maximum and minimum values ​​of the parameter range, so that the operating state of each light-emitting unit can be accurately determined.

[0013] In a possible embodiment, respectively determining the target cumulative count values ​​corresponding to the respective color channels, and determining the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel includes: Determine the maximum cumulative count value among the cumulative count values ​​corresponding to each color channel, and use the maximum cumulative count value as the target cumulative count value; The final channel state for any color channel is determined as follows: When there is a target cumulative count value for the color channel, the channel state corresponding to the target cumulative count value is determined as the final channel state; or When there are multiple identical target cumulative count values ​​for a color channel, the priorities of the channel states corresponding to the multiple target cumulative count values ​​are determined, and the channel state with a high priority is determined as the final channel state.

[0014] Through the above method, by accumulating count values ​​and combining the priorities of each channel state, the final channel state corresponding to the color channel can be quickly and accurately determined, so as to accurately control the operating parameters of the light-emitting unit under the color channel.

[0015] In an optional embodiment, respectively determining the target cumulative count values ​​corresponding to the respective color channels, and determining the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel, includes: Screen out the cumulative count value greater than the threshold in each color channel as the target cumulative count value; For any color channel, follow these steps: Determine the channel status corresponding to each target cumulative count value selected in the color channel; The channel state with the highest priority among all the determined channel states is determined as the final channel state.

[0016] In a possible embodiment, according to the final channel states corresponding to the N color channels, the operating parameters of the light-emitting units corresponding to the color channels are adjusted respectively, including: For each color channel, do the following: When the final channel state of the color channel is an oversufficient state, a downward adjustment instruction is generated to reduce the first operating parameter of each light-emitting unit corresponding to the color channel to the second operating parameter, and the operating parameters of each light-emitting unit corresponding to the color channel are adjusted according to the downward adjustment instruction; or When the final channel state of the color channel is an insufficient state, an upward adjustment instruction is generated to increase the first operating parameter of each light-emitting unit corresponding to the color channel to a second operating parameter, and the operating parameters of each light-emitting unit corresponding to each color channel are adjusted according to the upward adjustment instruction; or When the final channel state of the color channel is a stable state, a maintenance instruction is generated for each light-emitting unit corresponding to the color channel to maintain the operating parameters, and the operating parameters of each light-emitting unit corresponding to the color channel are maintained according to the maintenance instruction.

[0017] Through the above method, the operating parameters of all the light-emitting units corresponding to each color channel are adjusted through the power module, without adjusting the operating parameters of each light-emitting unit one by one, which simplifies the structure of the display device, saves costs, and ensures the display quality of the color backlight unit.

[0018] In a possible embodiment, the color channel is one of the following: Red channel, green channel, blue channel, white channel; Red-green combination channel, or red-blue combination channel and blue-green combination channel.

[0019] In a second aspect, the present application provides a control device, the device comprising: An acquisition module, used to acquire the cumulative count values ​​of K channel states corresponding to each of the N color channels, wherein N and K are integers greater than or equal to 2; A determination module, used to respectively determine the target cumulative count value corresponding to each color channel, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel; The control module is used to adjust the operating parameters of each light-emitting unit corresponding to each color channel according to the final channel states corresponding to each of the N color channels.

[0020] In a possible embodiment, the acquisition module is further used for: Count the number of K channel states corresponding to each of the N color channels; The number of times corresponding to each channel state is taken as the corresponding cumulative count value, and the cumulative count values ​​of the K channel states corresponding to the N color channels are obtained.

[0021] In a possible embodiment, the acquisition module is further used for: Determine the acquisition time period of the channel status; According to the acquisition time period, the accumulated count values ​​of the K channel states corresponding to the N color channels are obtained.

[0022] In a possible embodiment, the acquisition module is further used for: For any color channel among the N color channels, perform the following steps: Receiving output parameters of each light-emitting unit in a color channel; According to the parameter range and the output parameters of each light-emitting unit, the operating state of each light-emitting unit is determined respectively, and the operating state is used as the channel state of the color channel; The channel state determined each time is cumulatively counted to obtain the cumulative count values ​​of the K channel states respectively.

[0023] In a possible embodiment, the acquisition module is further used for: If the output parameter of the light-emitting unit is greater than the maximum value of the parameter range, it is determined that the operating state of the light-emitting unit is an oversufficient state; If the output parameter of the light-emitting unit is less than the minimum value of the parameter range, it is determined that the operating state of the light-emitting unit is an insufficient state; If the output parameter of the light-emitting unit is within the parameter range, it is determined that the operating state of the light-emitting unit is a stable state.

[0024] In a possible embodiment, the determination module is specifically used for: Determine the maximum cumulative count value among the cumulative count values ​​corresponding to each color channel; The final channel state for any color channel is determined as follows: When there is a maximum cumulative count value for the color channel, the channel state corresponding to the maximum cumulative count value is determined as the final channel state; or When there are multiple identical maximum cumulative count values ​​in a color channel, the priorities of the channel states corresponding to the multiple maximum cumulative count values ​​are determined, and the channel state with a high priority is determined as the final channel state.

[0025] In a possible embodiment, the determination module is specifically used for: Screen out the cumulative count value greater than the threshold in each color channel as the target cumulative count value; For any color channel, follow these steps: Determine the channel status corresponding to each target cumulative count value selected in the color channel; The channel state with the highest priority among all the determined channel states is determined as the final channel state.

[0026] In a possible embodiment, the control module is specifically used for: For each color channel, do the following: When the final channel state of the color channel is an oversufficient state, a downward adjustment instruction is generated to reduce the first operating parameter of each light-emitting unit corresponding to the color channel to the second operating parameter, and the operating parameters of each light-emitting unit corresponding to the color channel are adjusted according to the downward adjustment instruction; or When the final channel state of the color channel is an insufficient state, an upward adjustment instruction is generated to increase the first operating parameter of each light-emitting unit corresponding to the color channel to a second operating parameter, and the operating parameters of each light-emitting unit corresponding to each color channel are adjusted according to the upward adjustment instruction; or When the final channel state of the color channel is a stable state, a maintenance instruction is generated for each light-emitting unit corresponding to the color channel to maintain the operating parameters, and the operating parameters of each light-emitting unit corresponding to the color channel are maintained according to the maintenance instruction.

[0027] In a third aspect, the present application provides a dimming controller, comprising: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the steps of any one of the methods in the first aspect above.

[0028] In a fourth aspect, the present application provides a display device, comprising: a dimming controller and a backlight unit provided in the above-mentioned embodiments; the backlight unit comprises a plurality of driving units and a plurality of light-emitting units for generating color backlight, each driving unit is connected to a plurality of light-emitting units, and each light-emitting unit corresponds to a color channel; each driving unit is also connected to the dimming controller.

[0029] In a possible embodiment, the display device further includes a power module, which is connected to the dimming controller and is also connected to a power supply end, and the power supply end of each light-emitting unit corresponding to each color channel is connected to the power module.

[0030] In a fifth aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any one of the methods in the first aspect are implemented.

[0031] In a sixth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any one of the methods in the first aspect when the computer program is executed by a processor.

[0032] In a seventh aspect, the present application provides a computer program product, the computer program product comprising: a computer program code, when the computer program code is run on a computer, the computer executes any one of the methods in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of a display device with two local dimming backlight units in an embodiment of the present application; Figure 2 A structural diagram of a display device provided in an embodiment of the present application; Figure 3 This is an example diagram of a color local dimming backlight unit provided in an embodiment of the present application; Figure 4 This is a flow chart of an implementation of a control method provided in an embodiment of the present application; Figure 5A system schematic diagram of a monochrome local dimming backlight unit and a color local dimming backlight unit with multiple color expression structures in an embodiment of the present application; Figure 6 A schematic diagram of determining a voltage state in an embodiment of the present application; Figure 7 Another implementation flow chart of a control method in an embodiment of the present application; Figure 8 A schematic diagram of the structure of a control device is provided in an embodiment of the present application; Fig. 9 A schematic diagram of the structure of a dimming controller is provided in an embodiment of the present application; Fig.10 Schematic diagram of the structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other. In addition, although the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in an order different from that here.

[0035] The terms "first" and "second" in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the term "comprising" and any of their variations are intended to cover non-exclusive protection. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. "Multiple" in the present application can mean at least two, for example, two, three or more, and the embodiments of the present application are not limited.

[0036] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description. It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, which should be considered as exemplary, and their purpose is only to illustrate the feasibility of the implementation of the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0037] The following is a brief introduction to the design concept of the embodiment of the present application: With the development of technology, display devices have become important components of many electronic devices. Display devices are usually composed of a liquid crystal panel and a backlight unit. The BLU is located under the liquid crystal panel and provides a light source to illuminate the liquid crystal panel.

[0038] The local dimming backlight unit includes: a monochrome local dimming backlight unit and a color local dimming backlight unit.

[0039] See also Figure 1 As shown, it is a schematic diagram of a display device of two local dimming backlight units in an embodiment of the present application. The monochrome local dimming backlight unit can only light up one color in one dimming area, while the color local dimming backlight unit can light up multiple colors in one dimming area, which expands the color gamut range and no longer uses traditional color filters. This not only reduces the cost of the display device, but also achieves more advanced performance in color gamut performance. The monochrome local dimming backlight unit only needs to consider the parameter feedback control of a single color. However, the color local dimming backlight unit needs to consider the parameter feedback control of multiple colors. It should be noted here that the parameter feedback control can be voltage feedback control, current feedback control, or power feedback control, which is not limited here.

[0040] Existing control methods mainly target monochrome backlight units and reduce power consumption through global voltage adjustment. However, in color backlight scenarios, the voltage characteristics of light-emitting units of different colors in color backlight units are significantly different. Unified adjustment of the supply voltage may cause overvoltage of some colors (such as red LED) and undervoltage of other colors (such as blue LED), destroying the white balance and affecting the data display of the display device.

[0041] In view of this, in an embodiment of the present application, a control method is provided, which can be applied to a dimming controller, the dimming controller is connected to a backlight unit; the backlight unit includes multiple driving units and multiple light-emitting units for generating color backlight, each driving unit is connected to multiple light-emitting units, and each light-emitting unit corresponds to a color channel. The method includes: obtaining the cumulative count values ​​of K channel states corresponding to each of the N color channels, and then determining the final channel state corresponding to each color channel according to the cumulative count values ​​of each channel state corresponding to each color channel, and finally adjusting the operating parameters of each light-emitting unit corresponding to each color channel according to the final channel state corresponding to each color channel. In this way, the operating parameters of the corresponding light-emitting unit are adjusted independently according to the color channel, so that the operating parameters of the light-emitting units of different colors can be accurately adjusted, the energy efficiency and color balance can be optimized, the power consumption of the color backlight unit is reduced, and the data display of the display device is guaranteed.

[0042] See also Figure 2 As shown, it is a structural diagram of a display device provided in an embodiment of the present application. The display device includes: a dimming controller 201 or a microcontroller (Micro Controller Unit, MCU), a timing controller 202 or a system-on-chip (System on Chip, SoC), a backlight unit 203, and a liquid crystal panel 204. The dimming controller 201 generates a control signal according to the local dimming data output by the timing controller 202, and the control signal is used to control the driving unit Dimmer2031 in the backlight unit 203 to generate a driving signal. The driving unit 2031 provides a driving signal to the light-emitting unit 2032, and the driving signal can control the light-emitting brightness of the light-emitting unit 2032, thereby providing color backlights of different brightness.

[0043] The backlight unit 203 includes any dimming areas, each of which includes multiple driving units 2031 and multiple light-emitting units 2032 for generating colored backlight. Each driving unit 2031 is connected to multiple light-emitting units 2032, each light-emitting unit 2032 corresponds to a color channel, and each light-emitting unit 2032 includes multiple LEDs. Backlight units of multiple colors can be lit in one dimming area, so that the color expression structure in one dimming area can be very diverse, including but not limited to two colors (RG and B, or RB and G, or BG and R), three colors (R, G and B) and four colors (R, G, B and W).

[0044] Further, see Figure 3As shown, it is an example diagram of a color local dimming backlight unit provided in an embodiment of the present application. The display device provided in an embodiment of the present application also includes a power module (Power converter) 205. The control end of the power module 205 is connected to the dimming controller 201. The power supply end of the power module 205 is connected to each light-emitting unit corresponding to each color channel. One power supply end of the power module 205 is connected to the light-emitting unit under one color channel, so one power supply end of the power module 205 is connected to the corresponding color channel.

[0045] The power module 205 can be used to adjust the voltage of the power supply end of each light-emitting unit corresponding to each color channel according to the instruction of the dimming controller 201, so as to reduce the power consumption of the display device without affecting the data display of the display device. The power module 205 can be an AC to DC power supply (AC DC) converter, or DC to DC (DC When the power module 205 is AC When the power module 205 is a DC converter, the AC side of the power module 205 is connected to an AC power source. When a DC converter is used, the other DC side of the power module 205 is connected to a DC power source.

[0046] Figure 3 The color representation structure in the embodiment is three colors (R, G and B), and the power module 205 is used to adjust the voltage V of the power supply end of each light-emitting unit corresponding to the R channel according to the instruction of the dimming controller 201. LED , adjust the voltage of the power supply end of each light-emitting unit corresponding to the G channel according to the instruction of the dimming controller 201, and adjust the voltage of the power supply end of each light-emitting unit corresponding to the B channel according to the instruction of the dimming controller 201.

[0047] See also Figure 4 As shown, it is a flow chart of an implementation of a control method provided in an embodiment of the present application. The method can be applied to a dimming controller. The specific implementation process of the method is as follows: Step 401: Obtain the cumulative count values ​​of K channel states corresponding to each of the N color channels.

[0048] In the embodiment of the present application, the color channels are: a red channel (i.e., R channel), a green channel (i.e., G channel), a blue channel (i.e., B channel), and a white channel (i.e., W channel); one of a red-green combination channel (i.e., RG channel), or a red-blue combination channel (i.e., RB channel), or a blue-green combination channel (i.e., BG channel). It should be noted here that in addition to the several color channels provided in the embodiment of the present application, other color channels may also be used, for example, yellow, or a color channel formed by combining yellow with other colors, which is not limited in the embodiment of the present application.

[0049] For example, see Figure 5 , which is a system schematic diagram of a monochrome local dimming backlight unit and a color local dimming backlight unit with multiple color expression structures in an embodiment of the present application, wherein: Figure 5 Figure (a) shows a system of a monochrome local dimming backlight unit. Each light-emitting unit is uniformly connected to a power module, which uniformly controls the input voltage V of each light-emitting unit. LED ; (b) The figure shows a system of a color local dimming backlight unit with an RB-G color representation structure. The light-emitting unit on the left corresponds to the RB color channel, and the light-emitting unit on the right corresponds to the G color channel. The power module controls the input voltage V of the light-emitting unit under the RB color channel respectively. LED and the input voltage V of the light-emitting unit under the G color channel LED ; (c) The figure shows a system of a color local dimming backlight unit with an RGB color representation structure. The light-emitting unit on the left corresponds to the R color channel, the light-emitting unit in the middle corresponds to the G color channel, and the light-emitting unit on the right corresponds to the B color channel. The power module controls the input voltage V of the light-emitting unit under the R color channel respectively. LED , the input voltage V of the light-emitting unit under the G color channel LED and the input voltage V of the light-emitting unit under the B color channel LED ; (d) The figure shows a system of a color local dimming backlight unit with an RGBW color representation structure. From left to right, the first light-emitting unit corresponds to the W color channel, the second light-emitting unit corresponds to the R color channel, the third light-emitting unit corresponds to the G color channel, and the fourth light-emitting unit corresponds to the B color channel. The power module controls the input voltage V of the light-emitting unit under the W color channel respectively. LED , the input voltage V of the light-emitting unit under the R color channel LED , the input voltage V of the light-emitting unit under the G color channel LED , and the input voltage V of the light-emitting unit under the B color channel LED .

[0050] The above examples only illustrate several color channels that appear in actual applications, and other color combinations will not be described in detail.

[0051] Further, from the above Figure 5 It can be seen from the display unit shown that there are multiple light-emitting units under one color channel, and the channel state of the color channel is determined by the operating state of the light-emitting unit. Therefore, before obtaining the cumulative count values ​​of the K channel states corresponding to each of the N color channels, it is also necessary to determine the operating state of the light-emitting unit under each color channel.

[0052] In an embodiment of the present application, the number of K channel states corresponding to each of the N color channels is firstly counted, and the number of times corresponding to each channel state is used as the corresponding cumulative count value, so as to obtain the cumulative count values ​​of the K channel states corresponding to each of the N color channels.

[0053] Specifically, in a possible embodiment, the channel state is determined for any color unit among the N color units in the following manner: Step A1: receiving output parameters of each light-emitting unit in the color channel; It should be noted here that, in the embodiment of the present application, the output parameter of each light-emitting unit may be an output voltage, or an output power, an output current, etc. Of course, in addition to these two output parameters, other output parameters may also be used, such as a display parameter, which may be a grayscale value, or a brightness value, etc., which is not limited in the embodiment of the present application.

[0054] Step A2: determining the operating state of each light-emitting unit according to the parameter range and the output parameter of each light-emitting unit, and using the operating state as the channel state of the color channel; Specifically, in the embodiment of the present application, since a color channel includes multiple light-emitting units and the operating status of each light-emitting unit is different, there may be multiple different channel states under a color channel. Therefore, in the embodiment of the present application, it is necessary to count the operating status of all light-emitting units under the color channel in real time.

[0055] In an optional embodiment, the operating status of each light-emitting unit may be determined by the following method: Step A21: If the output parameter of the light-emitting unit is greater than the maximum value of the parameter range, it is determined that the operating state of the light-emitting unit is an over-sufficient state.

[0056] For example, when the output parameter is output voltage, the parameter range is a voltage range; if the output parameter is output power, the parameter range is a power range.

[0057] For example, see Figure 6 As shown, the parameter range in the embodiment of the present application is a voltage range, and the output voltage V of a light-emitting unit is OUT Greater than the maximum THD value of the voltage range HIGH , then determine the output voltage V of the light-emitting unit OUT If the voltage range is exceeded, the operation state of the light emitting unit is an over-sufficient state.

[0058] Step A22: If the output parameter of the light-emitting unit is less than the minimum value of the parameter range, it is determined that the operating state of the light-emitting unit is an insufficient state.

[0059] For example, Figure 6 As shown, the output voltage V of a light-emitting unit OUT Less than the minimum THD value within the parameter range LOW , then determine the output voltage V of the light-emitting unit OUT Insufficient, the operating state of the light emitting unit is insufficient.

[0060] Step A23: If the output parameter of the light-emitting unit is within the parameter range, it is determined that the operating state of the light-emitting unit is a stable state.

[0061] For example, Figure 6 As shown, the output voltage V of a light-emitting unit OUT In the parameter range [THD LOW , THD HIGH ], the output voltage V of the light-emitting unit is determined OUT Stable, the operating state of the light-emitting unit is a stable state.

[0062] In this way, by comparing the output parameter with the upper and lower boundaries of the parameter range, the operating state of each light-emitting unit can be accurately determined.

[0063] It should be noted here that the above three operating states are provided in the embodiment of the present application, but are not limited to the above three operating states. Other operating states can be added in the actual application environment. For example, the output parameters are compared with multiple parameter ranges to determine the operating state. In this way, multiple operating states can be determined in steps, thereby more accurately determining the operating state of the light-emitting unit.

[0064] In the above-mentioned method, the operating state of the light-emitting unit is determined according to the output voltage. In the embodiment of the present application, the operating state of the light-emitting unit can also be determined by the output power, that is, the output power of the light-emitting unit is detected, and then the output power is compared with the preset parameter range to determine the operating state.

[0065] Of course, the operating state of the light-emitting unit can also be determined based on the display parameters of the light-emitting unit (such as brightness value), that is, the display parameters of the light-emitting unit are collected, and then the display parameters are compared with a preset parameter range to determine the operating state of the light-emitting unit.

[0066] In addition, in the embodiment of the present application, the operating state of the light-emitting unit can also be determined by combining output parameters, such as combining the output voltage with the brightness value, or combining the output power with the brightness value, etc. Of course, it can also be a combination of three parameters, which is not limited in the embodiment of the present application. The operating state of the light-emitting unit can be determined more accurately by combining parameters.

[0067] After determining the operating state of each light-emitting unit, the operating state of the light-emitting unit is used as the channel state of the corresponding color channel. It can be seen from the above embodiments that there are multiple light-emitting units under one color channel, and each light-emitting unit has a corresponding operating state. The operating state of each light-emitting unit may be the same or different. Therefore, there are multiple situations for the channel state under one color channel, that is, one color channel corresponds to K channel states.

[0068] Step A3: cumulatively count the channel states determined each time, and obtain the cumulative count values ​​of the K channel states respectively.

[0069] In the embodiment of the present application, the operating state of each light-emitting unit may be determined by a driving unit connected to the output end of the light-emitting unit, or by a dimming controller connected to the driving unit.

[0070] When the driving unit determines the operating state of the light-emitting unit, each driving unit measures the output parameters of the corresponding light-emitting units in real time, and then each driving unit compares the output parameters of each light-emitting unit with the parameter range to determine the operating state of each light-emitting unit. Finally, each driving unit sends the operating state of each light-emitting unit to the dimming controller. The dimming controller will perform cumulative statistics according to the operating state, that is, count the number of times each operating state is uploaded under the same color channel. For example: if J light-emitting units are in an oversufficient state under the R channel, the oversufficient state is uploaded J times; if L light-emitting units are in an undersufficient state, the undersufficient state is uploaded L times; if M light-emitting units are in a stable state, the stable state is uploaded M times. In this way, the cumulative count values ​​of the K channel states under the color channel are counted.

[0071] When the dimming controller determines the operating state of the light-emitting unit, each driving unit measures the output parameters of the corresponding light-emitting units in real time, and then the dimming controller determines the operating state of each light-emitting unit based on the output parameters and parameter range of each light-emitting unit. Finally, the dimming controller will accumulate statistics on each operating state, thereby obtaining the cumulative count values ​​of the K channel states under the color channel.

[0072] Through the above method, statistics can be performed based on the operating status of the light-emitting unit under the color channel, thereby accurately reflecting the status of each channel under the color channel, thereby providing conditions for ultimately and accurately determining the channel status of the color channel.

[0073] Furthermore, in order to more accurately determine the channel status of each color channel, in the embodiment of the present application, before obtaining the operating status of each light-emitting unit corresponding to each color channel, it is necessary to first determine a channel status acquisition time period, and the channel status determined within the acquisition time period is a valid channel status. The channel status is determined by the operating status of the light-emitting unit, so the acquisition time period is also the acquisition period of the operating status of the light-emitting unit.

[0074] Among them, the shortest duration of the acquisition time cycle is the duration that all driving units in the backlight unit can summarize the operating status of the light-emitting unit; in this way, by setting the shortest duration of the acquisition time cycle, it can be ensured that the output parameters of each light-emitting unit are detected, thereby ensuring that the operating status of each light-emitting unit can be obtained.

[0075] In addition, the maximum duration of the acquisition time period is a sufficient duration for which changes in the input parameters of the light-emitting unit will not affect the display when the power module is controlled by outputting a control signal for the input parameters of the light-emitting unit of the entire backlight unit. By setting the maximum duration of the acquisition time period, the light-emitting unit can determine the operating state when the input parameters are stable, thereby ensuring the accuracy of determining the operating state of the light-emitting unit.

[0076] It should be noted here that the determination of the acquisition time period can be configured according to the actual application scenario, or the system can determine the acquisition time period according to the current operation of each light-emitting unit. In other words, the acquisition time period can be pre-configured or automatically selected or adjusted by the system, which is not limited in the embodiments of the present application.

[0077] The above method can accurately determine the accumulated count values ​​of the K channel states corresponding to the N color channels.

[0078] Step 402: Determine the target cumulative count value corresponding to each color channel respectively, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel.

[0079] In the embodiment of the present application, after the cumulative count values ​​corresponding to each color channel are obtained, statistical analysis is performed on each cumulative count value corresponding to each color channel to determine the final channel state corresponding to each color channel.

[0080] Optionally, in an embodiment of the present application, in order to determine the final channel states corresponding to the respective color channels according to the respective accumulated count values ​​corresponding to the respective color channels, a possible embodiment is provided, which specifically includes any one of the following methods: Method 1: The maximum cumulative count value among the cumulative count values ​​corresponding to the channel states corresponding to the respective color channels is determined.

[0081] When a cumulative count value corresponding to a color channel is the largest, the maximum cumulative count value is used as the target cumulative count value, and the running state of the target cumulative count value is used as the final channel state corresponding to the color channel.

[0082] For example, assuming that the cumulative count value of the underfill state corresponding to the R channel is 4, the cumulative count value of the stable state corresponding to the R channel is 6, and the cumulative count value of the overfill state corresponding to the R channel is 10, then the final channel state corresponding to the R channel is the overfill state.

[0083] In this way, by accumulating the count value, the final channel state corresponding to the color channel can be determined quickly and accurately, so as to accurately control the parameters of the light-emitting unit under the color channel.

[0084] Method 2: The maximum cumulative count value among the cumulative count values ​​corresponding to the channel states corresponding to the respective color channels is determined.

[0085] When the cumulative count value of the multiple channel states corresponding to the color channel is the largest, a channel state with a higher priority is selected from the multiple channel states with the largest cumulative count value as the final channel state corresponding to the color channel.

[0086] For example, assuming that the cumulative count value of the insufficient state corresponding to the G channel is 8, the cumulative count value of the stable state corresponding to the G channel is 8, and the cumulative count value of the overfull state corresponding to the G channel is 4, then the operating state with the largest cumulative count value corresponding to the G channel includes the insufficient state and the stable state, and the pre-configured overfull state priority is greater than the insufficient state priority and greater than the stable state priority. Therefore, the final channel state corresponding to the G channel is the insufficient state.

[0087] In this way, during statistical analysis, the priority of each channel state is combined to reduce the power consumption of the display device while improving the display effect.

[0088] Method 3: In each color channel, the cumulative count value greater than the threshold is selected as the target cumulative count value. For any color channel: determine the channel state corresponding to each target cumulative count value selected in the color channel. The channel state with the highest priority among all the determined channel states is determined as the final channel state.

[0089] For example, assuming that the cumulative count value of the under-sufficient state corresponding to channel B is 4, the cumulative count value of the stable state corresponding to channel B is 8, and the cumulative count value of the over-sufficient state corresponding to channel B is 8, if the threshold is set to 6, the cumulative count value of the stable state is greater than the threshold, and the cumulative count value of the over-sufficient state is greater than the threshold. At this time, both the stable state and the over-sufficient state will be screened out. Since the priority of the over-sufficient state is greater than the priority of the stable state, the final channel state of the B channel is the over-sufficient state.

[0090] Of course, in the embodiment of the present application, the threshold value can also be set for each channel state. For example, if the threshold value corresponding to the under-sufficient state is 5, the threshold value corresponding to the stable state is 8, and the number threshold value corresponding to the over-sufficient state is 5, then the candidate channel states corresponding to the B channel whose cumulative count value is greater than the corresponding threshold value include the over-sufficient state and the stable state, the priority of the over-sufficient state is greater than the stable state, and the final channel state corresponding to the B channel is the over-sufficient state.

[0091] Method 4: For each color channel, when the cumulative count value of the highest priority channel state of a color channel is greater than the corresponding threshold, the channel state with the highest priority is used as the final channel state corresponding to the color channel; when the cumulative count value of the highest priority channel state of a color channel is less than the corresponding threshold, method one or method two is used to determine the final channel state corresponding to the color channel.

[0092] For example, assuming that the priority of the underfill state is greater than the priority of the overfill state, which is greater than the priority of the stable state, the threshold corresponding to the underfill state is 5, the cumulative count value of the underfill state corresponding to channel B is 6, the cumulative count value of the stable state corresponding to channel B is 10, and the cumulative count value of the overfill state corresponding to channel B is 4, then the cumulative count value of the underfill state is greater than the corresponding threshold, and the final channel state corresponding to channel B is the underfill state.

[0093] Of course, in the embodiment of the present application, only four different methods of determining the final channel state of the color channel are listed as examples. In actual applications, the above methods can also be used in combination, which will not be described in detail in the embodiment of the present application.

[0094] Step 403: According to the final channel states corresponding to the N color channels, the operating parameters of the light-emitting units corresponding to the color channels are adjusted respectively.

[0095] In the embodiment of the present application, control instructions corresponding to each color channel are generated respectively according to the final channel states corresponding to each color channel to adjust the operating parameters of each light-emitting unit corresponding to each color channel.

[0096] The control instruction is used to control the power supply module to adjust the operating parameters of each light-emitting unit corresponding to the corresponding color channel. The operating parameters here can be the supply voltage, supply power, or other operating parameters of the light-emitting unit. The specific operating parameters are not limited in the embodiment of the present application. Of course, if the detected output parameter is the output voltage, the supply voltage of the light-emitting unit is adjusted; if the detected output parameter is the output power, the supply power of the light-emitting unit is adjusted.

[0097] In this way, according to the final channel state corresponding to each color channel, the parameter adjustment strategy of the power supply end of each light-emitting unit corresponding to each color channel is determined, so that the operating parameters of each light-emitting unit corresponding to each color channel can be adjusted more accurately.

[0098] For example: using a power module to adjust the supply voltage to achieve the supply voltage adjustment of all light-emitting units corresponding to each color channel, there is no need to adjust the supply voltage of each light-emitting unit one by one, which simplifies the structure of the display device, saves costs, and ensures the display quality of the color backlight unit.

[0099] Optionally, in an embodiment of the present application, in order to generate control instructions corresponding to each color channel respectively according to the final channel state corresponding to each color channel, a possible embodiment is provided, and for each color channel, corresponding operations are performed according to the following situations: Case 1: When the final channel state of a color channel is an oversufficient state, an instruction to adjust each light-emitting unit corresponding to the color channel from a first operating parameter to a second operating parameter is generated.

[0100] In the embodiment of the present application, when the final channel state of a color channel is an oversufficient state, it is necessary to reduce the operating parameters, for example, when the final channel state is an overvoltage state, it means that the voltage is too high, and a voltage reduction instruction is generated to reduce the light-emitting unit under the color channel from the first voltage to the second voltage. Thus, the power supply module is controlled by the voltage reduction instruction to reduce the supply voltage of the light-emitting unit corresponding to the color channel.

[0101] Case 2: When the final channel state of a color channel is an insufficient state, an upward adjustment instruction is generated to increase each light-emitting unit corresponding to the color channel from a first operating parameter to a second operating parameter.

[0102] In the embodiment of the present application, when the final channel state of a color channel is an insufficient state, it is necessary to increase the operating parameters, for example, when the final channel state is an undervoltage state, it means that the voltage is too low, and a boost instruction is generated to increase the light-emitting unit under the color channel from the first voltage to the second voltage. Thus, the power supply module is controlled by the boost instruction to increase the supply voltage of the light-emitting unit corresponding to the color channel.

[0103] Case 3: When the final channel state of the color channel is a stable state, a maintenance instruction is generated for each light-emitting unit corresponding to the color channel to maintain the operating parameters, and the operating parameters of each light-emitting unit corresponding to the color channel are maintained according to the maintenance instruction.

[0104] For example: when the final channel state of a color channel is a stable state, a voltage maintenance instruction is generated, and the power supply module is controlled by the maintenance instruction to maintain the voltage connected to the power supply end of the light-emitting unit corresponding to the color channel, thereby maintaining the power supply voltage of each light-emitting unit corresponding to the color channel.

[0105] In addition, it is worth noting that in the embodiments of the present application, each color channel can be independently controlled or combined. Considering the operation of lighting up the white balance of the screen, the following controls are included: independent parameter feedback control of the RGB color expression structure, combined parameter feedback control of the RG-B, RB-G, and R-GB color expression structures, and unified feedback parameter control of the RGB color expression structure. This is not limited in the embodiments of the present application.

[0106] Based on the above embodiments, see Figure 7 As shown, it is another implementation flow chart of a control method in an embodiment of the present application, and the specific implementation process of the method is as follows: Step 70: Each driving unit determines the operating status of the multiple light-emitting units according to the output parameters and parameter ranges of the multiple light-emitting units connected thereto.

[0107] Step 71: The dimming controller determines whether the operating status is collected from each driving unit. If so, step 72 is executed; otherwise, step 70 is executed.

[0108] Step 72: According to the accumulated count values ​​of the respective operating states corresponding to the respective color channels, the final channel states corresponding to the respective color channels are determined respectively.

[0109] Step 73: Generate control instructions corresponding to each color channel according to the final channel status corresponding to each color channel.

[0110] Step 74: The power module adjusts the operating parameters of the light-emitting units corresponding to the color channels according to the control instructions corresponding to the color channels.

[0111] The specific implementation process of the above method has been described in detail in the above embodiment and will not be repeated here.

[0112] Based on the same inventive concept, the present application embodiment provides a control device, please refer to Figure 8 , the device comprises: The acquisition module 801 is used to acquire the cumulative count values ​​of the K channel states corresponding to the N color channels, respectively, where N and K are integers greater than or equal to 2; A determination module 802 is used to determine the target cumulative count value corresponding to each color channel respectively, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel; The control module 803 is used to adjust the operating parameters of each light-emitting unit corresponding to each color channel according to the final channel states corresponding to each of the N color channels.

[0113] In a possible embodiment, the acquisition module 801 is further used for: Count the number of K channel states corresponding to each of the N color channels; The number of times corresponding to each channel state is taken as the corresponding cumulative count value, and the cumulative count values ​​of the K channel states corresponding to the N color channels are obtained.

[0114] In a possible embodiment, the acquisition module 801 is further used for: Determine the acquisition time period of the channel status; According to the acquisition time period, the accumulated count values ​​of the K channel states corresponding to the N color channels are obtained.

[0115] In a possible embodiment, the acquisition module 801 is further used for: For any color channel among the N color channels, perform the following steps: Receiving output parameters of each light-emitting unit in a color channel; According to the parameter range and the output parameters of each light-emitting unit, the operating state of each light-emitting unit is determined respectively, and the operating state is used as the channel state of the color channel; The channel state determined each time is cumulatively counted to obtain the cumulative count values ​​of the K channel states respectively.

[0116] In a possible embodiment, the acquisition module 801 is further used for: If the output parameter of the light-emitting unit is greater than the maximum value of the parameter range, it is determined that the operating state of the light-emitting unit is an oversufficient state; If the output parameter of the light-emitting unit is less than the minimum value of the parameter range, it is determined that the operating state of the light-emitting unit is an insufficient state; If the output parameter of the light-emitting unit is within the parameter range, it is determined that the operating state of the light-emitting unit is a stable state.

[0117] In a possible embodiment, the determination module 802 is specifically configured to: Determine the maximum cumulative count value among the cumulative count values ​​corresponding to each color channel, and use the maximum cumulative count value as the target cumulative count value; The final channel state for any color channel is determined as follows: When there is a target cumulative count value for the color channel, the channel state corresponding to the target cumulative count value is determined as the final channel state; or When there are multiple identical target cumulative count values ​​for a color channel, the priorities of the channel states corresponding to the multiple target cumulative count values ​​are determined, and the channel state with a high priority is determined as the final channel state.

[0118] In a possible embodiment, the determination module 802 is specifically configured to: Screen out the cumulative count value greater than the threshold in each color channel as the target cumulative count value; For any color channel, follow these steps: Determine the channel status corresponding to each target cumulative count value selected in the color channel; The channel state with the highest priority among all the determined channel states is determined as the final channel state.

[0119] In a possible embodiment, the control module 803 is specifically used to: For each color channel, do the following: When the final channel state of the color channel is an oversufficient state, a downward adjustment instruction is generated to reduce the first operating parameter of each light-emitting unit corresponding to the color channel to the second operating parameter, and the operating parameters of each light-emitting unit corresponding to the color channel are adjusted according to the downward adjustment instruction; or When the final channel state of the color channel is an insufficient state, an upward adjustment instruction is generated to increase the first operating parameter of each light-emitting unit corresponding to the color channel to a second operating parameter, and the operating parameters of each light-emitting unit corresponding to each color channel are adjusted according to the upward adjustment instruction; or When the final channel state of the color channel is a stable state, a maintenance instruction is generated for each light-emitting unit corresponding to the color channel to maintain the operating parameters, and the operating parameters of each light-emitting unit corresponding to the color channel are maintained according to the maintenance instruction.

[0120] Based on the above embodiments, Fig. 9 As shown, an embodiment of the present application provides a dimming controller, which includes a memory 901 and a processor 902 .

[0121] The memory 901 is used to store computer instructions executable by the processor; The processor 902 implements each step of the method in the above embodiment when executing the computer instruction. For details, please refer to the relevant description in the above method embodiment.

[0122] Optionally, the memory 901 can be independent or integrated with the processor 902. When the memory 901 is independently provided, the dimming controller further includes a bus for connecting the memory 901 and the processor 902.

[0123] Based on the above embodiments, see Fig.10 Shown is a schematic diagram of the structure of an electronic device in an embodiment of the present application.

[0124] An embodiment of the present application provides an electronic device, which may include a processor 902 (Center Processing Unit, CPU), a memory 901, an input device 1030 and an output device 1040, etc. The input device 1030 may include a keyboard, a mouse, a touch screen, etc., and the output device 1040 may include a display device, such as a liquid crystal display (Liquid Crystal Display, LCD), a cathode ray tube (Cathode Ray Tube, CRT), etc.

[0125] The memory 901 may include a read-only memory (ROM) and a random access memory (RAM), and provides the program instructions and data stored in the memory 901 to the processor 902. In the embodiment of the present application, the memory 901 may be used to store the program of any control method in the embodiment of the present application.

[0126] The processor 902 calls the program instructions stored in the memory 901, and the processor 902 is used to execute any control method in the embodiments of the present application according to the obtained program instructions.

[0127] Based on the above embodiments, in an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the control method in any of the above method embodiments is implemented.

[0128] The embodiment of the present application also provides a computer program product, including computer instructions, which implement the various steps of the method in the above embodiment when executed by a processor.

[0129] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0130] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0131] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0132] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0133] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A control method, characterized in that: The method comprises: Obtain the cumulative count values ​​of the K channel states corresponding to the N color channels, respectively, where N and K are integers greater than or equal to 2; Determine the target cumulative count value corresponding to each color channel respectively, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel; According to the final channel states corresponding to the N color channels, the operating parameters of the light-emitting units corresponding to the color channels are adjusted respectively.

2. The method according to claim 1, characterized in that The step of obtaining the cumulative count values ​​of the K channel states corresponding to the N color channels includes: Count the number of K channel states corresponding to each of the N color channels; The number of times corresponding to each channel state is taken as the corresponding cumulative count value, and the cumulative count values ​​of the K channel states corresponding to the N color channels are obtained.

3. The method according to claim 1, characterized in that The step of obtaining the cumulative count values ​​of the K channel states corresponding to the N color channels includes: Determine the acquisition time period of the channel status; According to the acquisition time period, the accumulated count values ​​of the K channel states corresponding to the N color channels are obtained.

4. The method according to claim 1, characterized in that Before obtaining the accumulated count values ​​of the K channel states corresponding to the N color channels, the method further includes: For any color channel among the N color channels, perform the following steps: Receiving output parameters of each light-emitting unit in a color channel; Determine the operating state of each light-emitting unit according to the parameter range and the output parameter of each light-emitting unit, and use the operating state as the channel state of the color channel; The channel state determined each time is cumulatively counted to obtain the cumulative count values ​​of the K channel states respectively.

5. The method according to claim 4, characterized in that Determining the operating state of each light emitting unit according to the parameter range and the output parameter of each light emitting unit includes: If the output parameter of the light-emitting unit is greater than the maximum value of the parameter range, it is determined that the operating state of the light-emitting unit is an oversufficient state; If the output parameter of the light emitting unit is less than the minimum value of the parameter range, determining that the operating state of the light emitting unit is an insufficient state; If the output parameter of the light-emitting unit is within the parameter range, it is determined that the operating state of the light-emitting unit is a stable state.

6. The method according to claim 1, characterized in that The step of respectively determining the target cumulative count values ​​corresponding to the respective color channels, and determining the channel states corresponding to the target cumulative count values ​​as the final channel states of the corresponding color channels, comprises: Determine the maximum cumulative count value among the cumulative count values ​​corresponding to each color channel, and use the maximum cumulative count value as the target cumulative count value; The final channel state for any color channel is determined as follows: When there is a target cumulative count value for the color channel, the channel state corresponding to the target cumulative count value is determined as the final channel state; or When there are multiple identical target cumulative count values ​​for a color channel, the priorities of the channel states corresponding to the multiple target cumulative count values ​​are determined, and the channel state with a high priority is determined as the final channel state.

7. The method according to claim 1, characterized in that The step of respectively determining the target cumulative count values ​​corresponding to the respective color channels, and determining the channel states corresponding to the target cumulative count values ​​as the final channel states of the corresponding color channels, comprises: Screening out cumulative count values ​​greater than a threshold value in each color channel as the target cumulative count value; For any color channel, follow these steps: Determine the channel status corresponding to each target cumulative count value selected in the color channel; The channel state with the highest priority among all the determined channel states is determined as the final channel state.

8. The method according to claim 4, characterized in that The adjusting the operating parameters of the light-emitting units corresponding to the respective color channels according to the final channel states corresponding to the respective N color channels comprises: For each color channel, do the following: When the final channel state of the color channel is an oversufficient state, a downward adjustment instruction is generated to reduce the light-emitting units corresponding to the color channel from the first operating parameter to the second operating parameter, and the operating parameters of the light-emitting units corresponding to the color channels are adjusted according to the downward adjustment instruction; or When the final channel state of the color channel is an insufficient state, an upward adjustment instruction is generated to increase the first operating parameter of each light-emitting unit corresponding to the color channel to a second operating parameter, and the operating parameters of each light-emitting unit corresponding to the color channel are adjusted according to the upward adjustment instruction; or When the final channel state of the color channel is a stable state, a maintenance instruction is generated for each light-emitting unit corresponding to the color channel to maintain the operating parameters, and the operating parameters of each light-emitting unit corresponding to the color channel are maintained according to the maintenance instruction.

9. The method according to any one of claims 1 to 8, characterized in that The color channel is one of the following: Red channel, green channel, blue channel, white channel; Red-green combination channel, red-blue combination channel, blue-green combination channel.

10. A control device, characterized in that: The device comprises: An acquisition module, used to acquire the cumulative count values ​​of K channel states corresponding to each of the N color channels, wherein N and K are integers greater than or equal to 2; A determination module, used to respectively determine the target cumulative count value corresponding to each color channel, and determine the channel state corresponding to the target cumulative count value as the final channel state of the corresponding color channel; The control module is used to adjust the operating parameters of each light-emitting unit corresponding to each of the N color channels according to the final channel states corresponding to each of the N color channels.

11. A dimming controller, comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 9.

12. A display device, characterized in that: It includes the dimming controller and backlight unit as described in claim 11; the backlight unit includes multiple driving units and multiple light-emitting units for generating color backlight, each driving unit is connected to multiple light-emitting units, and each light-emitting unit corresponds to a color channel; each driving unit is also connected to the dimming controller.

13. The display device according to claim 12, characterized in that The display device further comprises a power module, the power module is connected to the dimming controller, the power module is also connected to a power supply end, and the power supply end of each light-emitting unit corresponding to each color channel is connected to the power module.

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