CN114648942A - LED display screen, local brightness adjusting method thereof and LED display controller - Google Patents
LED display screen, local brightness adjusting method thereof and LED display controller Download PDFInfo
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- CN114648942A CN114648942A CN202011401017.XA CN202011401017A CN114648942A CN 114648942 A CN114648942 A CN 114648942A CN 202011401017 A CN202011401017 A CN 202011401017A CN 114648942 A CN114648942 A CN 114648942A
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- 238000004590 computer program Methods 0.000 claims description 7
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention relates to an LED display screen, a local brightness adjusting method thereof and an LED display controller, wherein the local brightness adjusting method comprises the steps of obtaining a touch operation position on the LED display screen; determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule; the brightness of the brightness adjustment area is reduced. By determining a brightness adjusting area surrounding the touch operation position and reducing the brightness in the area, the light intensity received by human eyes can be effectively reduced, and the human eyes are prevented from being damaged.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to an LED display screen, a local brightness adjusting method thereof and an LED display controller.
Background
The LED display screen has the advantages of bright color, high brightness, long service life, energy conservation and the like, thereby being widely used. With the continuous development of small-distance technology, LED displays are also widely used in indoor scenes, such as meeting rooms and exhibition halls.
At present, the conference all-in-one machine becomes a new application mode of the LED display screen. At the moment, infrared transceivers are arranged around the LED display screen to detect the position and the motion track of an object on the display screen, so that touch operation is realized. Generally, the display brightness of the LED display screen is set to be relatively high. When a user controls the LED display screen in a close range, the LED display screen is too bright, and human eyes can be irradiated by strong light, so that the eyes of the user can be injured.
In the prior art, a brightness sensor is generally arranged on an LED display screen for sensing the light intensity of the environment. The controller is internally provided with an LED display screen brightness adjusting meter, and the brightness of the LED display screen is adjusted according to the sensed ambient light intensity. The existing brightness adjusting scheme can only adjust the brightness of the whole screen according to the external light intensity. The adjustment of brightness can not be interacted with a user, especially, the brightness can not be adjusted according to the distance between the user and the LED display screen, and the eyes of the user are easily damaged.
Disclosure of Invention
Therefore, it is necessary to provide an LED display screen, a local brightness adjustment method thereof, and an LED display controller, aiming at the problem that the existing brightness adjustment scheme of the LED display screen is easy to damage the eyes of a user.
An embodiment of the application provides a method for adjusting local brightness of an LED display screen, which includes:
acquiring a touch operation position on the LED display screen;
determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule;
the brightness of the brightness adjustment area is reduced.
In some embodiments, the preset area determination rule is to determine a brightness adjustment area according to a visual angle of human eyes and a distance between a user and an LED display screen; the method further comprises the following steps:
and acquiring the distance between the user and the LED display screen.
In some embodiments, the brightness adjustment region includes an adjustment center region and an extension region disposed around the adjustment center region; the brightness adjusting area is in a cross shape.
In some embodiments, the brightness adjustment region further includes a transition region disposed around the adjustment center region and the extension region, and a brightness reduction value of the transition region is smaller than brightness reduction values of the adjustment center region and the extension region.
In some embodiments, the method further comprises:
when a motion track of touch operation is detected, a pre-adjusting area is set in the motion direction, and the brightness of the pre-adjusting area is reduced.
An embodiment of the present application further provides an LED display controller, for controlling the display operation of an LED display screen, including:
the data acquisition unit is used for acquiring a touch operation position on the LED display screen;
the area determining unit is used for determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule;
and a brightness adjusting unit for reducing brightness of the brightness adjusting region.
In some embodiments, the area determination unit is further configured to set a pre-adjustment area in a moving direction when a moving track of the touch operation is detected; the brightness adjusting unit is also used for reducing the brightness of the pre-adjusting area.
Another embodiment of the application provides an LED display screen, which includes an LED display screen body and an LED display controller, where the LED display controller receives externally input picture data and controls display work of the LED display screen body; the LED display screen body also comprises a touch module for detecting a touch operation position; the LED display controller according to any one of the embodiments described above, which receives the touch operation position, determines the brightness adjustment area, and reduces the brightness of the brightness adjustment area.
In some embodiments, a distance detection module is further disposed on the LED display screen body, and is configured to obtain a distance between a user and the LED display screen; the LED display controller determines a brightness adjusting area according to the distance between a user and the LED display screen and the visual angle of human eyes.
An embodiment of the present application further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for adjusting local brightness of an LED display screen according to any one of the foregoing embodiments.
The local brightness adjusting scheme of the LED display screen provided by the embodiment of the application is characterized in that a brightness adjusting area surrounding the touch operation position is determined, the brightness in the area is reduced, the light intensity received by human eyes can be effectively reduced, and the damage to the human eyes is avoided.
Drawings
Fig. 1 is a schematic diagram of a frame structure of an LED display screen according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an LED display screen according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a method for adjusting local brightness of an LED display screen according to an embodiment of the present application;
FIG. 4 is a diagram illustrating an embodiment of determining a brightness adjustment region according to a visual angle of a human eye;
FIG. 5 is a schematic flowchart of a method for adjusting local brightness of an LED display screen according to another embodiment of the present application;
FIG. 6 is a diagram illustrating a brightness adjustment region according to an embodiment of the present application;
FIG. 7 is a schematic view of the pre-conditioning region set in the steering motion direction in an embodiment of the present application;
FIG. 8 is a schematic flowchart illustrating a method for adjusting local brightness of an LED display screen according to another embodiment of the present application;
FIG. 9 is a schematic diagram of a transition region in an embodiment of the present application;
fig. 10 is a schematic view of a frame structure of an LED display screen according to another embodiment of the present application.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 3, an embodiment of the present application discloses a method for adjusting local brightness of an LED display screen, including:
s100, acquiring a touch operation position on the LED display screen;
s200, determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule;
and S300, reducing the brightness of the brightness adjusting area.
Fig. 1 and fig. 2 show an application scenario of the method for adjusting local brightness of an LED display screen according to the embodiment of the present application. The LED display screen shown in fig. 1 and 2 includes an LED display controller 10 and an LED display screen body 20, and a touch module 21 is disposed on the LED display screen body 20. When the user performs a touch operation on the LED display screen body 20, the touch module 21 may detect the touch operation position 400.
The touch module 21 disposed on the LED display screen body 20 can detect the touch operation position 400. For example, the touch module 21 may be an infrared transceiver module, which is disposed on a peripheral frame of the LED display screen body 20, and detects a horizontal position and a vertical position of an obstacle on the LED display screen body 20 as the touch operation position 400 by transmitting and receiving infrared rays. For example, the touch module 21 may also be a sensing electrode layer and a sensing controller stacked on the LED display panel 20.
The method for adjusting the local brightness of the LED display screen in the embodiment of the present application may be implemented by the LED display controller 10, or may be implemented by both the LED display controller 10 and the LED display screen body 20. The following specifically describes the operation of the scheme by taking the LED display controller 10 as an example.
When the touch module 21 detects the touch operation position 400, it can send the touch operation position to the LED display controller 10. The LED display controller 10 determines the brightness adjustment area 300 surrounding the touch operation position 400 according to the predetermined area determination rule, as shown in fig. 2. Then, the brightness of the brightness adjusting area is reduced to a preset display brightness value.
For example, the preset area determination rule may be an area with a touch operation position as a center, a preset distance, and a preset shape. The preset shape may be a circle, a rectangle, a triangle, or a polygon. Thus, a brightness adjusting area surrounding the touch operation position and centered on the touch operation position can be formed. Generally, when a user performs a touch operation, human eyes watch at a touch operation position.
According to the local brightness adjusting method for the LED display screen, the brightness adjusting area surrounding the touch operation position is determined, the brightness in the area is reduced, the light intensity received by human eyes can be effectively reduced, and the human eyes are prevented from being damaged.
In some embodiments, as shown in fig. 4, the preset area determination rule may be to determine the brightness adjustment area according to the visual angle of human eyes and the distance between the user and the LED display screen. As shown in fig. 5, the method for adjusting local brightness of an LED display screen further includes:
and S150, acquiring the distance between the user and the LED display screen.
Illustratively, as shown in fig. 9, a distance detection module 22 may be further disposed on the LED display screen body 20 for detecting a distance between a user and the LED display screen, and then transmitting the distance to the LED display controller 10. It can be understood that, in order to obtain the distance between the user and the LED display screen, other schemes may also be adopted, for example, a scheme based on image analysis is provided, the camera module 23 is disposed on the LED display screen body 20, an image of the user in front of the LED display screen is obtained, and image analysis is performed, that is, the distance between the user and the LED display screen may be determined.
The visual angle of human eyes includes a visual angle in a vertical direction and a visual angle in a horizontal direction. The angle of the visual angle of the human eye may include a maximum visual angle and a comfort angle. Generally, in the horizontal direction, the maximum visual angle of human eyes is respectively 95 degrees at the left and the right, and the maximum visual angle is 190 degrees; the comfort angle is 60. In the vertical direction, the maximum viewing angle is 60 degrees upwards, 75 degrees downwards and 135 degrees in total; the comfort angle is 55. In the preset area determination rule, the maximum visual angle or comfortable angle of human eyes can be selected as the visual angle of human eyes.
The brightness adjusting area is determined through the visual angle of human eyes and the distance between a user and the LED display screen, so that the brightness adjusting area can be more attached to the visual range of the human eyes, the local brightness adjustment is more humanized and accurate, and the interference to irrelevant areas is avoided.
In some embodiments, the preset region determination rule may be a region where the user's face is occluded. The LED display screen local brightness adjusting method further comprises the following steps:
and acquiring a user image and determining a face shielding area of the user.
The user image in front of the LED display screen can be obtained through the camera module 23 on the LED display screen body 20, the size of the face of the user and the position and height of the user relative to the LED display screen can be determined through image analysis, and then the area of the face of the user projected on the LED display screen body 20 can be determined, namely the area shielded by the face of the user is determined.
In some embodiments, as shown in fig. 6, the brightness adjustment region 300 may include an adjustment center region 310 and an extension region 320, and the extension region 320 is disposed around the adjustment center region 310.
The adjustment center area 310 may be determined according to the preset area determination rule in the previous embodiment, for example, according to the viewing angle of human eyes and the distance between the user and the LED display screen. Around the center area 310, an extension area 320 may be further added to reduce the harm to the eyes of a user when the user directly views the LED display screen through near touch operation.
It will be appreciated that the expanded region 320, relative to the central region of adjustment 310, may be disposed in a generally cruciform shape, as shown in FIG. 6, or may take other shapes, such as a straight longitudinal line, a straight transverse line, or a rectangular shape surrounding the central region of adjustment 310.
In some embodiments, as shown in fig. 9, the brightness adjustment region 300 may further include a transition region 340, the transition region 340 is disposed around the adjustment center region 310 and the extension region 320, and a brightness reduction value of the transition region 340 is smaller than that of the adjustment center region 310 and the extension region 320. In this way, the transition of the transition region 340 in the luminance change can reduce the adverse effect of the abrupt change in luminance between the luminance adjustment region 300 and the peripheral region.
It is understood that in order to achieve a smooth transition of the brightness change and avoid abrupt brightness changes, the brightness in the brightness adjustment region 300 is decreased, and the brightness decrease value in the central region is the largest, and then gradually decreases to zero in the region extending outward.
In some embodiments, as shown in FIG. 7, a preconditioning region 330 may also be provided outside of brightness conditioning region 300. As shown in fig. 8, the method for adjusting local brightness of an LED display screen may further include:
s400, when a motion track of touch operation is detected, a pre-adjusting area is set in the motion direction, and the brightness of the pre-adjusting area is reduced.
When a user performs a touch operation, there may be a touch movement in addition to a click. The touch module 21 can also detect the motion trace of the touch operation and then send the motion trace to the LED display controller 10. As shown in fig. 7, the starting point of the motion trajectory may be used as the touch operation position, and then the brightness adjustment area is determined; the direction of movement is then determined from the movement trajectory, in which direction the preconditioning zone is set 330. The profile of the preconditioning region 330 may be adapted to the brightness-conditioning region. The preconditioning region 330 may follow the change according to the continuous change of the motion trajectory of the touch operation.
The dimming level of preconditioning region 330 may be the same as the dimming level, or may be lower than the dimming level to which the dimming level is reduced.
Through setting up the area of preconditioning on the direction of motion of touch-control operation, can let local brightness control expand according to following the direction of motion in step, reduced the harm to human eyes.
In some embodiments, after step S300, the method for adjusting the local brightness of the LED display screen may further include:
and when the touch operation is detected to be released, restoring the brightness of the brightness adjusting area within a preset restoring time period.
When the user does not perform the touch operation any more, the brightness of the brightness adjusting area can be gradually restored within a preset restoring time period. For example, the preset recovery time period may be set to any value within 3s to 10 s.
In some embodiments, the method for adjusting the local brightness of the LED display screen may further include:
and when the preset brightness adjusting action is detected, correspondingly adjusting the brightness of the preset adjusting area.
The preset brightness adjusting action can comprise a brightness reducing action and a brightness increasing action, and the specific content of the action can be freely set.
For example, a plurality of brightness adjustment operation regions may be disposed on the LED display screen, and different brightness adjustment operation regions correspond to different brightness adjustment operations. The content of the action may be a tapping action at a single point position or a sliding action. The brightness adjustment operation may include decreasing the brightness, increasing the brightness, restoring the brightness to a default value, and the like. The corresponding preset adjusting area can be a transverse area or a longitudinal area at the position of the knocking action and with a certain span distance, and can also be an area of the whole LED display screen, and is configured according to actual control requirements.
A plurality of brightness adjusting actions can be obtained by combining the brightness adjusting operation areas and the actions, different brightness adjusting operations are correspondingly set, corresponding brightness operations are executed on the corresponding preset adjusting areas, and intelligent brightness adjustment is achieved.
According to the local brightness adjusting method for the LED display screen, the brightness adjusting area surrounding the touch operation position is determined, the brightness in the area is reduced, the light intensity received by human eyes can be effectively reduced, and the damage to the human eyes is avoided.
As shown in fig. 10, an embodiment of the present application further discloses an LED display controller 10, configured to control a display operation of an LED display screen, including:
the data acquisition unit 100 is used for acquiring a touch operation position on the LED display screen;
the area determination unit 200 is configured to determine a brightness adjustment area surrounding the touch operation position according to a preset area determination rule;
and a brightness adjusting unit 300 for reducing brightness of the brightness adjusting region.
The specific working manners of the data obtaining unit 100, the area determining unit 200 and the brightness adjusting unit 300 can refer to the related descriptions of steps S100, S200 and S300 in the foregoing method embodiments, and are not described herein again.
The LED display controller provided by the embodiment of the application can effectively reduce the light intensity received by human eyes and avoid causing damage to the human eyes by determining a brightness adjusting area surrounding the touch operation position and reducing the brightness in the area.
In some embodiments, the preset area determination rule may be to determine the brightness adjustment area according to the visual angle of human eyes and the distance between the user and the LED display screen. And the data acquisition unit 100 is also used for acquiring the distance between the user and the LED display screen.
The brightness adjusting area is determined through the visual angle of human eyes and the distance between a user and the LED display screen, so that the brightness adjusting area can be more attached to the visual range of the human eyes, the local brightness adjustment is more humanized and accurate, and the interference to irrelevant areas is avoided.
In some embodiments, the preset region determination rule may be a region where the user's face is occluded. The data acquisition unit 100 is further configured to acquire a user image. The area determination unit 200 may determine the size of the face of the user and the position and height of the user relative to the LED display screen through image analysis, and further determine an area where the face of the user is projected onto the LED display screen body 20, that is, a face-shielding area of the user, as a brightness adjustment area.
In some embodiments, the area determination unit 200 is further configured to, when a motion trajectory of the touch operation is detected, set a pre-adjustment area in a motion direction; and the brightness adjusting unit 300 is also used for reducing the brightness of the pre-adjusting area. Through setting up the area of preconditioning on the direction of motion of touch operation, can let local brightness control expand according to following the direction of motion in step, reduced the harm to human eyes.
In some embodiments, the brightness adjustment unit 300 is further configured to restore the brightness of the brightness adjustment area within a preset restoration time period when the touch operation is detected to be released.
In some embodiments, the brightness adjusting unit 300 is further configured to, when the preset brightness adjusting action is detected, correspondingly adjust the brightness of the preset adjusting area.
The LED display controller provided by the embodiment of the application can effectively reduce the light intensity received by human eyes and avoid causing damage to the human eyes by determining a brightness adjusting area surrounding the touch operation position and reducing the brightness in the area.
As shown in fig. 10, another embodiment of the present application further discloses an LED display screen, which includes an LED display screen body 20 and an LED display controller 10, where the LED display controller 10 receives externally input image data and controls the display operation of the LED display screen body 20; the LED display screen body 20 further comprises a touch module 21 for detecting a touch operation position; the LED display controller 10 is the LED display controller in the foregoing embodiment, receives the touch operation position, determines the brightness adjustment area, and reduces the brightness of the brightness adjustment area.
The touch module 21, which may be an infrared transceiver module, is disposed on a peripheral frame of the LED display screen body 20, and detects a horizontal position and a vertical position of an obstacle on the LED display screen body 20 as a touch operation position 400 by transmitting and receiving infrared rays. For example, the touch module 21 may also be a sensing electrode layer and a sensing controller stacked on the LED display panel 20.
By adopting the LED display controller of the previous embodiment, the brightness adjusting area surrounding the touch operation position is determined, and the brightness in the area is reduced, so that the light intensity received by human eyes can be effectively reduced, and the human eyes are prevented from being damaged.
The LED display screen body 20 may further be provided with a camera module 23 for obtaining user images. The LED display controller 10 can determine the brightness adjustment region based on the user image.
The LED display screen body 20 may further be provided with a distance detection module 22, configured to obtain a distance between a user and the LED display screen. The LED display controller 10 may determine the brightness adjustment region according to the distance between the user and the LED display screen and the viewing angle of human eyes.
Another embodiment of the present application further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for adjusting local brightness of an LED display screen according to any one of the above embodiments.
The system/computer device integrated components/modules/units, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
In the several embodiments provided in the present invention, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the components is only one logical division, and other divisions may be realized in practice.
In addition, functional modules/components in the embodiments of the present invention may be integrated into the same processing module/component, or each of the modules/components may exist alone physically, or two or more modules/components may be integrated into the same module/component. The integrated modules/components can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional modules/components.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, device or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for adjusting local brightness of an LED display screen is characterized by comprising the following steps:
acquiring a touch operation position on the LED display screen;
determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule;
the brightness of the brightness adjustment area is reduced.
2. The method for adjusting the local brightness of the LED display screen according to claim 1, wherein the preset area determination rule is to determine a brightness adjustment area according to a visual angle of human eyes and a distance between a user and the LED display screen; the method further comprises the following steps:
and acquiring the distance between the user and the LED display screen.
3. The local brightness adjusting method of the LED display screen according to claim 1, wherein the brightness adjusting region comprises an adjusting central region and an expanding region, and the expanding region is arranged around the adjusting central region; the brightness adjusting area is in a cross shape.
4. The method for adjusting the local brightness of the LED display screen according to claim 3, wherein the brightness adjusting region further comprises a transition region, the transition region is disposed around the adjusting center region and the expansion region, and a brightness reduction value of the transition region is smaller than that of the adjusting center region and the expansion region.
5. The method for adjusting the local brightness of the LED display screen according to claim 1, further comprising:
when a motion track of touch operation is detected, a pre-adjusting area is set in the motion direction, and the brightness of the pre-adjusting area is reduced.
6. An LED display controller for controlling the display operation of an LED display screen, comprising:
the data acquisition unit is used for acquiring a touch operation position on the LED display screen;
the area determining unit is used for determining a brightness adjusting area surrounding the touch operation position according to a preset area determining rule;
and a brightness adjusting unit for reducing brightness of the brightness adjusting region.
7. The LED display controller according to claim 6, wherein the area determination unit is further configured to set a pre-adjustment area in a moving direction when a moving track of the touch operation is detected; the brightness adjusting unit is also used for reducing the brightness of the pre-adjusting area.
8. An LED display screen comprises an LED display screen body and an LED display controller, wherein the LED display controller receives externally input picture data and controls the display work of the LED display screen body; the LED display screen body also comprises a touch module for detecting a touch operation position; the LED display controller is the LED display controller of any one of claims 6 to 7, receives the touch operation position, determines a brightness adjustment area, and reduces the brightness of the brightness adjustment area.
9. The LED display screen of claim 8, wherein the LED display screen body is further provided with a distance detection module for obtaining a distance between a user and the LED display screen; the LED display controller determines a brightness adjusting area according to the distance between a user and the LED display screen and the visual angle of human eyes.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method of adjusting the local brightness of an LED display screen according to any one of claims 1 to 5.
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