Display control method for rotating display device and rotating display device

Abstract

An embodiment of the present invention discloses a display control method for a rotating display device and a rotating display device, which is applied to a processor of the rotating display device, the processor being connected to a light-emitting drive module of the rotating display device. The method includes: obtaining image data to be displayed; parsing the image data to obtain a first display density distribution of the image data in n sub-display areas within a complete display area; obtaining a reference brightness value, wherein the reference brightness value is greater than or equal to the regional brightness value of the sub-display area with the largest area; adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; and controlling the light-emitting drive module to illuminate the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution to display the image data. The present invention can effectively adjust the display density distribution of image data in different sub-display areas, so that the brightness of the image data within the display area is uniform.

Description

Technical Field

[0001] The present invention relates to the field of image display technology, and in particular to a display control method for a rotating display device and a rotating display device. Background Art

[0002] Existing rotating display devices utilize LED chips mounted on a circuit board and driven by an LED display driver chip. Sensors detect the position of the LED output as the blades rotate. A processor interprets the multimedia file to be played and, based on the LED's position, transmits the required data to the LED display driver chip, driving the LEDs to illuminate until a full rotation of image data is completed. Due to the human eye's persistence of vision, the entire image appears to be visible.

[0003] Since the LED light-emitting area located in the center of the rotating display device is small, when the LED light-emitting areas in the center and edge parts emit the same light intensity, it is easy for the center part to have higher brightness and the edge part to have lower brightness. The uneven brightness will affect the image display effect.

[0004] Therefore, there is an urgent need for a rotation display driving solution that can uniformly display brightness. Summary of the Invention

[0005] In order to solve the above technical problems, the embodiments of the present application provide a display control method for a rotating display device and a rotating display device. The specific solutions are as follows:

[0006] In a first aspect, an embodiment of the present application provides a display control method for a rotating display device, which is applied to a processor of the rotating display device, the processor being connected to a light-emitting drive module of the rotating display device, the method comprising:

[0007] Obtaining image data to be displayed;

[0008] parsing the image data to obtain a first display density distribution of the image data in n sub-display areas within the complete display area, where n is a positive integer;

[0009] Acquire a reference brightness value, wherein the reference brightness value is greater than or equal to the regional brightness value of the sub-display region with the largest area;

[0010] adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution;

[0011] The light-emitting driving module is controlled to drive and light up the light-emitting chips of each sub-display area according to the first display density distribution and the second display density distribution to display the image data.

[0012] According to a specific implementation of the embodiment of the present application, the method further includes:

[0013] Acquire a first display area of ​​the light-emitting driving module;

[0014] The first display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0015] According to a specific implementation of the embodiment of the present application, after “obtaining image data to be displayed,” the method further includes:

[0016] Acquiring the image data from a second display area on the light-emitting driving module;

[0017] The second display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0018] According to a specific implementation of the embodiment of the present application, if the reference brightness value is equal to the regional brightness value of the sub-display area with the largest area, “adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution” includes:

[0019] adjusting the display density distribution of the sub-display areas except the nth sub-display area according to the reference brightness value to obtain a second display density distribution of n-1 sub-display areas;

[0020] The “controlling the light-emitting driving module to drive the light-emitting chips of each sub-display area to light up according to the first display density distribution and the second display density distribution” includes:

[0021] Controlling the light-emitting driving module to drive and light up the light-emitting chip in the nth sub-display area according to the first display density distribution;

[0022] The light-emitting driving module is controlled to drive and light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

[0023] According to a specific implementation of the embodiment of the present application, if the reference brightness value is greater than the regional brightness value of the sub-display area with the largest area, the reference brightness value is the regional brightness value of the mth sub-display area, where m is a positive integer, m <n;

[0024] The “adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution” includes:

[0025] adjusting the display density distribution of the image data in the sub-display areas other than the m-th to n-th sub-display areas according to the reference brightness value to obtain a second display density distribution of the m-1 sub-display areas;

[0026] The “controlling the light-emitting driving module to drive the light-emitting chips of each sub-display area to light up according to the first display density distribution and the second display density distribution” includes:

[0027] Controlling the light-emitting driving module to light up the light-emitting chips in the mth to nth sub-display areas according to the first display density distribution;

[0028] The light-emitting driving module is controlled to light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

[0029] According to a specific implementation of the embodiment of the present application, the reference brightness value is a regional brightness value of any sub-display area.

[0030] According to a specific implementation of the embodiment of the present application, the calculation formula of the regional brightness value is:

[0031] Regional brightness value = PPI*L / w, where PPI = total number of pixels in the sub-display area / arc length of the sub-display area, L is the luminous intensity of a pixel, and w is the width of a pixel.

[0032] According to a specific implementation of the embodiment of the present application, the reference brightness value is greater than or equal to 124*L / w and less than or equal to 255*L / w, where L is the luminous intensity of a pixel and w is the width of a pixel.

[0033] In a second aspect, an embodiment of the present application provides a rotating display device, the rotating display device comprising a light-emitting driving module and a processor, wherein the light-emitting driving module is connected to the processor;

[0034] The processor is used to obtain image data to be displayed; parse the image data to obtain a first display density distribution of the image data in n sub-display areas within a complete display area, where n is a positive integer; obtain a reference brightness value, where the reference brightness value is greater than or equal to the regional brightness value of the sub-display area with the largest area; adjust the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; and control the light-emitting drive module to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution to display the image data.

[0035] According to a specific implementation of the embodiment of the present application, the processor is further used to obtain the first display area of ​​the light-emitting driving module; divide the first display area into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0036] An embodiment of the present application provides a display control method for a rotating display device and a rotating display device, which is applied to a processor of the rotating display device, the processor being connected to a light-emitting driver module of the rotating display device. The method comprises: obtaining image data to be displayed; parsing the image data to obtain a first display density distribution of the image data in n sub-display areas within a complete display area; obtaining a reference brightness value, wherein the reference brightness value is greater than or equal to the regional brightness value of the sub-display area with the largest area; adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; and controlling the light-emitting driver module to illuminate the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution to display the image data. The present invention can effectively adjust the display density distribution of image data in different sub-display areas, so that the brightness of the image data within the display area is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope of protection of the present invention. In each of the drawings, similar components are numbered similarly.

[0038] Figure 1 A schematic diagram showing a method flow of a display control method for a rotating display device provided in an embodiment of the present application is shown;

[0039] Figure 2 A schematic diagram illustrating an application scenario of the step of dividing sub-display areas in a display control method for a rotating display device provided in an embodiment of the present application is shown;

[0040] Figure 3 A schematic diagram showing the effect of a display control method for a rotating display device provided by the prior art is shown;

[0041] Figure 4 A schematic diagram showing the effect of a display control method for a rotating display device provided by an embodiment of the present application is shown;

[0042] Figure 5 One of the application scenario schematic diagrams of a display control method for a rotating display device provided in an embodiment of the present application is shown;

[0043] Figure 6A second schematic diagram of an application scenario of a display control method for a rotating display device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the figures is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort are intended to be within the scope of protection of the present invention.

[0046] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0047] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0048] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which the various embodiments of the present invention pertain. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meaning as in the context of the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in the various embodiments of the present invention.

[0049] refer to Figure 1 , is a flow chart of a method for controlling a display of a rotating display device provided in an embodiment of the present application. The method for controlling a display of a rotating display device provided in an embodiment of the present application is as follows: Figure 1 Shown, including:

[0050] Step S101, obtaining image data to be displayed;

[0051] In a specific embodiment, the display control method of this embodiment is applied to a processor of a rotating display device, and the processor is connected to a light-emitting driving module of the rotating display device.

[0052] The light-emitting driving module includes a light-emitting chip, a motor, a light-emitting driving chip, a driving circuit board, and a sensor. Specifically, this embodiment does not limit the specific structure of the light-emitting driving module, and the corresponding rotating display device can be selected according to the needs of the actual application scenario.

[0053] Specifically, the image data to be displayed can be sent by the user to the processor of the rotating display device through the host computer. The host computer is communicatively connected to the rotating display device. The communication connection method can be wired communication or wireless communication, which is not limited here.

[0054] The image data to be displayed may also be stored in advance in the memory of the rotating display device, and the image display is automatically performed when the rotating display device is powered on.

[0055] This embodiment does not limit the specific method of acquiring the image data to be displayed, and the acquisition operation can be performed according to actual application scenarios.

[0056] Step S102, parsing the image data to obtain a first display density distribution of the image data in n sub-display areas within the complete display area, where n is a positive integer;

[0057] Specifically, such as Figure 2 As shown, the sub-display areas can be divided according to the length w occupied by the LED chips.

[0058] In one embodiment, the LED chip has a diameter length w=1 mm in one annular sub-display area, and a spacing s=1 mm between two adjacent annular sub-display areas. A single-arm light-emitting drive module is constructed with N=20 LED chips.

[0059] At this time, the distance between the outermost LED chip and the center position is D(20)=39mm. If the rotated image is divided according to the display density distribution H=1200 lines / circle, then the PPI(20) in the outermost sub-display area covered by LED20 is ≈1200 / (2*π-*39)≈124 pixels / inch.

[0060] In a specific embodiment, the obtained brightness data value before compensation of each sub-display area can be as follows: Figure 5 and Figure 6 The first four columns are shown.

[0061] It should be noted that the first display density distribution of the image data in the n sub-display areas is the same.

[0062] The value of n can be adaptively set according to the actual application scenario, and the specific value of the first display density distribution H can also be adaptively set according to the actual application scenario, which is not limited here.

[0063] According to a specific implementation of the embodiment of the present application, the calculation formula for the regional brightness value of each layer of the sub-display area is:

[0064] Regional brightness value = PPI*L / w, where PPI = total number of pixels in the sub-display area / arc length of the sub-display area, L is the luminous intensity of a pixel, and w is the width of a pixel.

[0065] In a specific embodiment, the value of L / w is a constant and can be adaptively replaced according to the specifications of the LED chip. This embodiment does not limit this. The unit of the regional brightness value can be adaptively replaced according to the specific units of arc length, luminous intensity and width in actual application scenarios, for example, cd / 2 , can also be cd / mm 2 .

[0066] According to the calculation formula of the regional brightness value, the luminous intensity in each sub-display area can be calculated.

[0067] According to a specific implementation of the embodiment of the present application, the method further includes:

[0068] Acquire a first display area of ​​the light-emitting driving module; the first display area is a complete display area of ​​the light-emitting driving module.

[0069] The first display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0070] In a specific embodiment, the n sub-display areas may be divided based on the complete display area of ​​the light-emitting driving module, and the sub-display areas may be divided according to the maximum display area of ​​the light-emitting driving module.

[0071] This division method may be applied before acquiring the image data to be displayed, or may be applied after acquiring the image data to be displayed, which is not limited in this embodiment.

[0072] According to a specific implementation of the embodiment of the present application, after “obtaining image data to be displayed,” the method further includes:

[0073] A second display area of ​​the image data on the light-emitting driving module is acquired; the second display area is the display area occupied by the image data on the light-emitting driving module.

[0074] The second display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0075] In a specific embodiment, the method of dividing the n sub-display areas may also be to divide the display area based on the image data, and to divide the sub-display areas according to the display area occupied by the image data in the light-emitting driving module.

[0076] This division method is applied after acquiring the image data to be displayed.

[0077] The method for dividing the display area into n annular sub-display areas proposed in this embodiment can effectively distinguish the display brightness of each layer of the display area and plan the display density distribution by region. Furthermore, this embodiment proposes a method for dividing the display area based on the occupied area of ​​the image data, which can effectively reduce the data processing workload of brightness sampling.

[0078] Step S103, obtaining a reference brightness value, wherein the reference brightness value is greater than or equal to the regional brightness value of the sub-display region with the largest area;

[0079] In a specific implementation process, the reference brightness value should be greater than or equal to the regional brightness value of the outermost sub-display area.

[0080] The reference brightness value can be set to any value greater than or equal to the regional brightness value of the outermost sub-display area according to the actual application scenario, but in actual application, the reference brightness value should be less than the regional brightness value of the central sub-display area.

[0081] According to a specific implementation of the embodiment of the present application, the reference brightness value is a regional brightness value of any sub-display area.

[0082] In a specific implementation process, setting the reference brightness value as the regional brightness value of any sub-display area can effectively reduce the amount of data processing for downsampling.

[0083] According to a specific implementation of the embodiment of the present application, the reference brightness value is greater than or equal to 124*L / w and less than or equal to 255*L / w, where L is the luminous intensity of a pixel and w is the width of a pixel.

[0084] In a specific implementation process, limiting the range of the reference brightness value to within the range of 124*L / w to 255*L / w can effectively improve the image display effect of the rotating display device.

[0085] Step S104, adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution;

[0086] Step S105 : controlling the light-emitting driving module to drive and light up the light-emitting chips of each sub-display area according to the first display density distribution and the second display density distribution, so as to display the image data.

[0087] In a specific embodiment, a corresponding data transmission channel is set according to the display density of each sub-display area. By downsampling the data transmission channel, the display density distribution in the current sub-display area can be effectively reduced.

[0088] The updated display density distribution is sent to the corresponding LED driver chip, and the corresponding LED chip can be controlled to perform light display according to the updated display density distribution.

[0089] like Figure 3 As shown, the light-emitting driving module is controlled to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution, so that all the light-emitting chips are lit.

[0090] like Figure 4 As shown, the light-emitting driving module is controlled to drive and light up the light-emitting chips in each sub-display area according to the second display density distribution, so only part of the light-emitting chips are lit.

[0091] refer to Figure 5 According to a specific implementation of the embodiment of the present application, if the reference brightness value is equal to the regional brightness value of the sub-display area with the largest area, “adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution” includes:

[0092] adjusting the display density distribution of the sub-display areas except the nth sub-display area according to the reference brightness value to obtain a second display density distribution of n-1 sub-display areas;

[0093] The “controlling the light-emitting driving module to drive the light-emitting chips of each sub-display area to light up according to the first display density distribution and the second display density distribution” includes:

[0094] Controlling the light-emitting driving module to drive and light up the light-emitting chip in the nth sub-display area according to the first display density distribution;

[0095] The light-emitting driving module is controlled to drive and light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

[0096] In a specific embodiment, the regional brightness value of LED 20 is set as the reference brightness value, and it is necessary to downsample the pixel data of the sub-display area where all LED chips except LED 20 are located.

[0097] For example, when LED19 displays according to the first display density, the regional brightness value is 131*L / w. The first display density distribution needs to be adjusted to the second display density distribution, that is, from 1200 lines / circle to 1138 lines / circle. When LED19 displays according to the second display density distribution, the regional brightness value is 124*L / w.

[0098] like Figure 5 As shown, by controlling the light-emitting driving module to drive the light-emitting chips of the sub-display area of ​​LED1-19 to light up according to the second display density distribution, the brightness of each sub-display area can be made consistent.

[0099] According to a specific implementation of the embodiment of the present application, if the reference brightness value is greater than the regional brightness value of the sub-display area with the largest area, the reference brightness value is the regional brightness value of the mth sub-display area, where m is a positive integer, m <n;

[0100] The “adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution” includes:

[0101] adjusting the display density distribution of the image data in the sub-display areas other than the m-th to n-th sub-display areas according to the reference brightness value to obtain a second display density distribution of the m-1 sub-display areas;

[0102] The “controlling the light-emitting driving module to drive the light-emitting chips of each sub-display area to light up according to the first display density distribution and the second display density distribution” includes:

[0103] Controlling the light-emitting driving module to light up the light-emitting chips in the mth to nth sub-display areas according to the first display density distribution;

[0104] The light-emitting driving module is controlled to light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

[0105] In a specific embodiment, usually only the excessive brightness of the central sub-display area will affect the quality of image display. Therefore, the regional brightness value of the mth sub-display area may also be selected as the reference brightness value.

[0106] like Figure 6 As shown, the regional brightness value of the 10th sub-display area can be selected as the reference brightness value for brightness compensation.

[0107] The brightness compensation method provided in this embodiment can not only optimize brightness uniformity, but also reduce the amount of data processing for downsampling.

[0108] In summary, this embodiment provides a display control method for a rotating display device. By compensating and adjusting the display brightness distribution of each sub-display area of ​​the rotating display device, it can effectively improve the brightness uniformity of the rotating display device when displaying image data, ensure the visual experience, reduce unnecessary brightness redundancy, save power consumption, and effectively extend the service life of the rotating display device.

[0109] In addition, an embodiment of the present application further provides a rotating display device, the rotating display device comprising a light-emitting driving module and a processor, wherein the light-emitting driving module is connected to the processor;

[0110] The processor is used to obtain image data to be displayed; parse the image data to obtain a first display density distribution of the image data in n sub-display areas within a complete display area, where n is a positive integer; obtain a reference brightness value, where the reference brightness value is greater than or equal to the regional brightness value of the sub-display area with the largest area; adjust the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; and control the light-emitting drive module to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution to display the image data.

[0111] According to a specific implementation of the embodiment of the present application, the processor is further used to obtain the first display area of ​​the light-emitting driving module; divide the first display area into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

[0112] Specifically, the specific implementation process of the rotating display device mentioned in this embodiment can refer to the specific implementation process of the above method embodiment, and will not be repeated here.

[0113] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or flowchart, and the combination of boxes in the structure diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0114] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0115] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0116] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A display control method for a rotating display device, characterized in that: A processor applied to a rotating display device, the processor being connected to a light-emitting drive module of the rotating display device, wherein the method comprises: Obtaining image data to be displayed; parsing the image data to obtain a first display density distribution of the image data in n sub-display areas within the complete display area, where n is a positive integer; Acquire a reference brightness value, wherein the reference brightness value is greater than or equal to the regional brightness value of the sub-display region with the largest area; adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; controlling the light-emitting driving module to drive and light up the light-emitting chips of each sub-display area according to the first display density distribution and the second display density distribution to display the image data; If the reference brightness value is equal to the regional brightness value of the sub-display region with the largest area, the “adjusting the display density of the image data in each sub-display region according to the reference brightness value to obtain a second display density distribution” includes: adjusting the display density distribution of the sub-display areas except the nth sub-display area according to the reference brightness value to obtain a second display density distribution of n-1 sub-display areas; The “controlling the light-emitting driving module to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution” includes: Controlling the light-emitting driving module to drive and light up the light-emitting chip in the nth sub-display area according to the first display density distribution; The light-emitting driving module is controlled to drive and light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

2. The method according to claim 1, characterized in that The method further comprises: Acquire a first display area of ​​the light-emitting driving module; The first display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

3. The method according to claim 1, characterized in that After the step of "obtaining image data to be displayed", the method further comprises: Acquiring the image data from a second display area on the light-emitting driving module; The second display area is divided into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

4. The method according to claim 1, wherein If the reference brightness value is greater than the regional brightness value of the sub-display region with the largest area, the reference brightness value is the regional brightness value of the mth sub-display region, where m is a positive integer. <n; The “adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution” includes: adjusting the display density distribution of the image data in the sub-display areas other than the m-th to n-th sub-display areas according to the reference brightness value to obtain a second display density distribution of the m-1 sub-display areas; The “controlling the light-emitting driving module to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution” includes: Controlling the light-emitting driving module to light up the light-emitting chips in the mth to nth sub-display areas according to the first display density distribution; The light-emitting driving module is controlled to light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

5. The method according to claim 1, characterized in that The reference brightness value is the regional brightness value of any sub-display area.

6. The method according to claim 1, characterized in that The calculation formula of the regional brightness value is: Regional brightness value = PPI*L / w, where PPI = total number of pixels in the sub-display area / arc length of the sub-display area, L is the luminous intensity of a pixel, and w is the width of a pixel.

7. The method according to claim 1, characterized in that The reference brightness value is greater than or equal to 124*L / w and less than or equal to 255*L / w.

8. A rotating display device, characterized in that: The rotating display device includes a light-emitting driving module and a processor, wherein the light-emitting driving module is connected to the processor; The processor is configured to obtain image data to be displayed; parse the image data to obtain a first display density distribution of the image data in n sub-display areas within a complete display area, where n is a positive integer; obtain a reference brightness value, where the reference brightness value is greater than or equal to a regional brightness value of the sub-display area with the largest area; adjust the display density of the image data in each sub-display area according to the reference brightness value to obtain a second display density distribution; and control the light-emitting driving module to drive and illuminate the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution to display the image data; if the reference brightness value is equal to the regional brightness value of the sub-display area with the largest area, the "adjusting the display density of the image data in each sub-display area according to the reference brightness value to obtain the second display density distribution" includes: adjusting the display density distribution of the sub-display areas except the nth sub-display area according to the reference brightness value to obtain a second display density distribution of n-1 sub-display areas; The “controlling the light-emitting driving module to drive and light up the light-emitting chips in each sub-display area according to the first display density distribution and the second display density distribution” includes: Controlling the light-emitting driving module to drive and light up the light-emitting chip in the nth sub-display area according to the first display density distribution; The light-emitting driving module is controlled to drive and light up the light-emitting chips in the remaining sub-display areas according to the second display density distribution.

9. The rotating display device according to claim 8, wherein: The processor is further configured to obtain a first display area of ​​the light-emitting driving module; and divide the first display area into n annular sub-display areas, wherein a preset distance is spaced between two adjacent annular sub-display areas.

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