CN115810327A - Display method of LED display screen, storage medium and electronic equipment - Google Patents

Abstract

The embodiment of the application discloses a display method of an LED display screen, a storage medium and electronic equipment, and belongs to the technical field of communication. The method comprises the following steps: acquiring a target brightness set, wherein the target brightness set is a set of target brightness of pixels in a first pixel region corresponding to a target image to be displayed, and the first pixel region comprises at least one pixel of a display screen; determining a first current value of the first pixel region input current according to the maximum target brightness in the target brightness set; and controlling the display duration of each pixel in the first pixel region according to the first current value so as to enable each pixel in the first pixel region to display the target brightness corresponding to the target image. So as to improve the contrast of the LED display screen.

Description

Display method, storage medium and electronic equipment of LED display screen

technical field

The present application relates to the communication field, and more specifically, to a display method, storage medium and electronic equipment of an LED display screen.

Background technique

The LED display screen displays images through arranged light emitting diode (LED) lamps, and has the advantages of less power consumption, longer lifespan, and longer viewing distance compared with liquid crystal display screens.

Since there is a delay in the perception time of the human eye, the purpose of controlling the brightness perceived by the human eye can be achieved by controlling the on-time duty cycle of the LED lamp on-time and off-time. At present, the LED light display mainly adjusts the display brightness of the LED by controlling the conduction duty cycle of the LED light to achieve the effect of the picture display.

However, since the adjustment accuracy of the duty cycle of the LED light is limited by the hardware capability, by adjusting the duty cycle of the LED to adjust the brightness, there is a problem of insufficient image contrast when the LED display screen displays a low-brightness image.

Contents of the invention

Embodiments of the present application provide a display method, a storage medium, and a communication device of an LED display screen, which can solve the problem of insufficient contrast of a display screen. Described technical scheme is as follows:

In the first aspect, the embodiment of the present application provides a display method of an LED display screen, including:

Acquiring a set of target luminances, the set of target luminances being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen;

determining a first current value of the input current in the first pixel region according to the maximum target brightness in the target brightness set;

According to the first current value, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, determining the first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set includes:

According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, in the mapping relationship, the maximum target brightness and the second Corresponding to a current value.

Optionally, the mapping relationship includes a correspondence between multiple brightness intervals and multiple current values, the maximum target brightness belongs to a first brightness interval among the multiple brightness intervals, and the first brightness interval and the multiple current values value corresponding to this first current value.

Optionally, the current value corresponding to one of the multiple brightness intervals is a current value of the input current when a pixel displays the maximum brightness of the one brightness interval.

Optionally, the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel.

Optionally, controlling each pixel in the first pixel region to display a target brightness corresponding to the target image according to the first current value includes:

determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value;

According to the first current value and the display duration of each pixel in the first pixel area per unit time, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, controlling each pixel in the first pixel area to display a target brightness corresponding to the target image according to the first current value and the display duration of each pixel in the first pixel area per unit time includes :

According to the target luminance of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal is used for Control the display duration of pixels in unit time;

According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image.

In a second aspect, the embodiment of the present application provides a display device, including:

An acquisition module, configured to acquire a target luminance set, the target luminance set being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen;

A control module, configured to determine a first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set;

The control module is also used for controlling each pixel in the first pixel region to display the target brightness corresponding to the target image according to the first current value.

Optionally, the control module is specifically used for:

According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, in the mapping relationship, the maximum target brightness and the second Corresponding to a current value.

Optionally, the mapping relationship includes a correspondence between multiple brightness intervals and multiple current values, the maximum target brightness belongs to a first brightness interval among the multiple brightness intervals, and the first brightness interval and the multiple current values value corresponding to this first current value.

Optionally, the current value corresponding to one of the multiple brightness intervals is a current value of the input current when a pixel displays the maximum brightness of the one brightness interval.

Optionally, the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel.

Optionally, the control module is specifically used for:

determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value;

According to the first current value and the display duration of each pixel in the first pixel area per unit time, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, the control module is specifically used for:

According to the target luminance of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal is used for Control the display duration of pixels in unit time;

According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image.

In a third aspect, an embodiment of the present application provides a computer storage medium, where a plurality of instructions are stored in the computer storage medium, and the instructions are suitable for being loaded by a processor to execute the above method steps.

In a fourth aspect, the embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein, the memory stores a computer program, and the computer program is adapted to be loaded by the processor and execute the above method steps.

In the embodiment of this application, the LED display screen determines the input current value of the pixel area according to the maximum target brightness of the pixel area required by the target image, and controls the display duration of each pixel in the pixel area according to the input current value, so that The target brightness required by each pixel in the pixel area to display the target image can improve brightness adjustment accuracy and increase the contrast of the display screen.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the LED display screen provided by the embodiment of the present application;

FIG. 2 is a schematic diagram of a partial circuit for adjusting the brightness of an LED lamp provided in an embodiment of the present application;

Fig. 3 is another schematic diagram of a part of the circuit for adjusting the brightness of the LED lamp provided by the embodiment of the present application

Fig. 4 is a schematic flowchart of a display method of an LED display screen provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a display device provided by an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a display screen provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be Read as indicating or implying relative importance. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In addition, in the description of the present application, unless otherwise specified, "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

FIG. 1 is a schematic diagram of an LED display screen provided by an embodiment of the present application.

The LED display screen 101 shown in FIG. 1 may include a plurality of pixels, such as a pixel 102 and a pixel 103 . A pixel can be composed of red, green, and blue LED lights, or a pixel can be composed of lights that are packaged with red, green, and blue LED chips at the same time. By adjusting the red, green, and blue display brightness, the effect of displaying different colors can be achieved.

The LED display screen can include one or more pixel areas, for example, one cabinet can be one pixel area, one LED display screen can be composed of one or more cabinets, and multiple cabinet arrays can be spliced into a whole screen. The cabinet is spliced by an array of LED light panels, and the LED light panel is composed of an array of pixels. A pixel area can be controlled by a driving module, and the driving module controls the brightness of all pixels in a pixel area. Exemplarily, the driving module may be a driving chip. At present, the maximum load unit of the LED display driver chip is generally 16 channels × 32 scans, and the maximum load unit of the high-scan driver chip is generally 16 channels × 64 scans, that is, a single driver chip can achieve a maximum of 16 × 64 pixels (pixel , pix) load.

Fig. 2 is a schematic diagram of a part of the circuit for adjusting the brightness of the LED lamp provided by the embodiment of the present application.

As shown in Figure 2, the circuit includes LED lamps, such as LED lamps 201, 202; a power supply module, used to supply power to the LED lamps; switching tubes, such as switching tubes 203, 204, the current output terminal of the power supply module and the positive pole of the LED lamp Connection, for example, the current output of the power module is connected to the anodes of the LED lamps 201 and 202 respectively. The negative pole of the LED lamp is connected to the output of the control module, for example, one output terminal of the control module is connected to the negative pole of the LED lamp 201 , and the other output terminal is connected to the negative pole of the LED lamp 202 . The control module can control the conduction and non-conduction of the LED lamp 201 and the LED lamp 202 respectively, so as to realize whether the LED lamp 201 and the LED lamp 202 emit light or not. In the embodiment of the present application, the control module can also control the current of each LED lamp.

The circuit shown in Figure 2 is a common anode circuit in which the anodes of the LED lights are connected to the power module. In a specific embodiment, the LED lights can also be a common cathode circuit as shown in Figure 3, and the cathodes of the LED lights are all grounded ( ground, GND), and the different output ends of the control module are respectively connected to the anode of each LED lamp. In the embodiment of the present application, the control module shown in FIG. 3 can not only control the power supply of the LED lamp, but also control the current of the LED lamp and on-time.

At present, the LED display mainly adopts a fixed current, and controls the conduction time of the LED light through a pulse width modulation (PWM) signal, so that the LED light can control the brightness perceived by human eyes. In the circuit shown in Figure 2, the control module can control the on-time of the LED lamp 201 through the first PWM signal according to the brightness of the LED lamp 201 required for the image to be displayed, and according to the brightness of the LED lamp 202 required for the image to be displayed. The brightness is controlled by the second PWM signal to control the turn-on time of the LED lamp 202 . The control module can control the light-emitting time of the LED light by adjusting the ratio of the high level to the low level (or called the duty cycle) of the PWM signal in a unit time, so that the average brightness of the LED light in a unit time reaches the required level. Brightness, because the human eye perceives time delay, therefore, the human eye perceives that the LED light emits light continuously and the brightness is the average brightness per unit time.

For example, in the example of FIG. 2 , the LED light 201 is the LED light 201 included in one pixel of the LED display screen. When the LED display screen displays a frame of image, the corresponding pixel needs the brightness displayed by the LED light 201 to be 50% of the maximum brightness. , the control module can send a PWM signal to the switch tube 203, and the PWM signal is at a high level for half the time in the image frame, and the PWM signal can control the switch tube 203 to be turned on for half the time in the image frame, so that the LED If the lamp 201 emits light for half of the time in the image frame, the average brightness of the LED lamp in the image frame is 50% of the maximum brightness.

However, the adjustment accuracy of the duty cycle of the LED lamp is limited by the processing capability of the control module. The number of grayscale digits is a basic index to reflect the display effect of the LED display, and is related to the processing capability of the control module. For example, for an LED display with 13 bits of grayscale, the grayscale ranges from 0 to 2 ¹³ , that is, from 0 to 8191. If the maximum brightness of a pixel is L _max , the minimum step of brightness adjustment that the control module can realize is L _max /8192, when at least one pixel in the display screen needs to display the maximum brightness when displaying images, the full screen can realize 8192 brightness adjustments, and the contrast ratio of the screen is 1:8191. And if the highest display brightness required to display an image is 50% of the maximum brightness L of the pixel, that is, L _max /2, then when the LED display screen displays the image, the full screen can realize 4096 brightness adjustments, that is, 0 to 4095, which can be adjusted The range is reduced by 1 bit and the contrast ratio is reduced to 1:4095. When the maximum display brightness required to display an image is reduced to L _max /4, the adjustable range will be further reduced by 1 bit. This makes the problem of insufficient picture contrast when the LED display screen displays a low-brightness picture. At present, the number of virtual grayscale digits can be increased through software algorithms. Since the real grayscale digits of the display screen have not been improved, when the display screen displays low-brightness images, flickering in units of pixels in the screen visible to the naked eye will appear.

Since the LED lamp conduction time is fixed, the greater the current, the higher the brightness. The present application proposes to improve the brightness adjustment accuracy of the display screen when displaying low-brightness images by adjusting the current, increase the contrast, and achieve the purpose of improving the display effect of the LED display screen.

The display method of the LED display screen provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

FIG. 4 is a schematic flow chart of a display method 300 for an LED display provided by an embodiment of the present application. The method includes but is not limited to the following steps:

S301. The LED display screen acquires a target luminance set, where the target luminance set is a set of target luminances of pixels in a first pixel region corresponding to a target image to be displayed.

Wherein, the first pixel area includes at least one pixel of the display screen.

The LED display screen can obtain the target brightness of each pixel in the first pixel area required by the target image to be displayed, and obtain a target brightness set.

When the LED display screen displays multiple frames of images, for example, when the LED display screen displays video, the target image may be the target image to be displayed in the target frame. The LED display screen executes the method shown in Figure 4 for each frame of image.

S302. The LED display screen determines a first current value of the input current of the first pixel area according to the maximum target brightness in the target brightness set.

The LED display screen can determine the first current value corresponding to the maximum target brightness according to the maximum target brightness of the pixel required by the target image as the current value of the input current of the first pixel area.

Optionally, the LED display screen may determine the first current value according to the mapping relationship and the maximum target brightness in the target brightness set. The mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, and in the mapping relationship, the maximum target brightness in the target brightness set corresponds to the first current value.

In one embodiment, the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel.

The LED display screen may pre-store the function, and according to the function and the maximum target brightness in the target brightness set, determine the first current value corresponding to the maximum target brightness. When the current of the first current value is input to a pixel, the pixel displays the maximum target brightness.

The LED display uses the input current value when the pixel can display the maximum target brightness as the current value of the input current in the first pixel area, so that the corresponding pixel can display the maximum brightness when the LED display displays the target image. If the current value input into the first pixel area is smaller than the input current value when the pixel displays the maximum target brightness, the pixels in the first pixel area will not be able to display the maximum target brightness.

In another embodiment, the mapping relationship includes correspondence between multiple brightness intervals and multiple current values, and the maximum target brightness in the target brightness set belongs to the first brightness interval among the multiple brightness intervals, and the first brightness interval Corresponding to the first current value among the plurality of current values.

For example, the mapping relationship can be as shown in Table 1. The mapping relationship includes multiple brightness intervals, wherein one brightness interval corresponds to a current value, L represents the brightness of the pixel, and the current value corresponding to the brightness interval 0<L≤L2 is I1, and the brightness The current value corresponding to the interval L2<L≤L3 is I2. For example, if the maximum target brightness L _target in the target brightness set belongs to the brightness interval L2<L≤L3, the LED display screen can determine that the first current value corresponding to the maximum target brightness L _target is I2.

Table 1

Brightness range current value 0<L≤L2 I1 L2<L≤L3 I2 … …

Optionally, the current value corresponding to one of the multiple brightness intervals is the current value of the input current when a pixel displays the maximum brightness of the one brightness interval.

For example, the maximum luminance that a pixel can display is L _max , and the luminance can be divided into 3 luminance intervals with 100% L _max , 50% L _max and 25% L _max according to the current value corresponding to the measured pixel luminance, which are respectively 0<L≤L _max /4, L _max /4<L≤L _max /2 and L _max /2<L≤L _max , measure the input current value when a pixel displays the maximum brightness in each brightness interval, As the current value corresponding to each pixel interval. The mapping relationship between the brightness of the pixel and the current value can be shown in Table 2, the input current value of the pixel display brightness L _max /4 is I(L _max /4), and the input current value of the pixel display brightness L _max /2 is I( L _max /2), the input current value of the pixel display brightness L _max is I(L _max ), where I(L) represents the input current value of the pixel when the display brightness is L.

Table 2

Brightness range current value 0<L≤L_max/4 I(L_max/4) L_max/4<L≤L_max/2 I(L_max/2) L_max/2<L≤L_max I(L_max)

S303. The LED display screen controls each pixel in the first pixel area to display the target brightness corresponding to the target image according to the first current value.

After the LED display screen determines the first current value of the current input to the first pixel area when displaying the target image, the first pixel area can be controlled according to the first current value and the target brightness of each pixel in the first pixel area corresponding to the target screen. Each pixel in shows the brightness corresponding to the target image.

Optionally, the LED display screen determines the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value. And, the LED display screen controls each pixel in the first pixel area to display the target brightness corresponding to the target image according to the first current value and the display duration of each pixel in the first pixel area per unit time.

After the current value input to the first pixel area is determined, the LED display can adjust the display duration of each pixel in a unit time, so that each pixel can display the target brightness required by the target image in a unit time.

For example, the maximum brightness of pixels in the first pixel area required by the LED display to determine the target image is 50% L _max , such as the LED display can determine the input of the first pixel when displaying the target image according to the mapping relationship shown in Table 2 The current value of the current in the area is I(L _max /2), and the target image is the image to be displayed in a video frame. For the pixel displaying the maximum brightness of 50% L _max in the first pixel area, since the input current value is 50 The current value at the brightness of %L _max , the brightness displayed after the pixel is turned on is 50% L _max , therefore, the display duration of the pixel in the video frame (that is, an example of the unit duration) is equal to the duration of the video frame . That is to say, the pixel is always emitting light in the video frame, so that the average brightness of the pixel in the video frame is 50% L _max . For the next video frame, the LED display screen determines the current value of the current input to the first pixel area according to the maximum brightness value displayed by the pixel in the first pixel area required for the image to be displayed in the next video frame, and according to each The target brightness corresponding to each pixel, and control the display duration of each pixel in the next video frame, so that each pixel can display the required target brightness in the next video frame.

Optionally, the LED display screen determines the duty ratio of the pulse width modulation PWM signal corresponding to each pixel according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value, and the PWM The duty cycle of the signal is used to control the display duration of the pixel per unit time. The LED display screen controls each pixel in the first pixel area to display the target brightness corresponding to the target image according to the first current value and the PWM signal corresponding to each pixel in the first pixel area.

For example, the target brightness of a pixel in the first pixel area required by the target image is 25% L _max , since the current value input to the first pixel area is the current value of the input current input to the first pixel area, the pixel displays 50% L The current value I(L _max /2) of _{the max} brightness, then the LED display can determine that the display time of a pixel displaying 25% L _max brightness per unit time is half of the unit time. The display brightness of the pixel is 25% L _max per unit time. The LED display screen can determine that the duty cycle of the PWM signal input to the pixel is 50% per unit time, and the PWM signal is used to control the on-time of the pixel to be 50% of the unit time.

For example, the number of grayscale digits of the LED display screen is 13 bits, and the current value of the input current in the first pixel area is the current value I(L _max /2) of the pixel displaying 50% L _max brightness, then the LED display screen is input When the current value is I(L _max /2), the minimum brightness adjustment step is 1/8192 of 50% L _max , that is, L _max /16384. This makes it possible to adjust 8192 kinds of brightness when the maximum brightness displayed by the first pixel area is 50% L _max , that is, the contrast ratio is 1:8192. As mentioned above, when the current is not adjusted, when the maximum brightness of the display is 50% L _max , only 4096 kinds of brightness and a contrast ratio of 1:4096 can be realized. The determination of the input current value according to the maximum brightness proposed by the embodiment of the present application can improve the brightness adjustment accuracy and increase the contrast of the display screen.

For another example, the maximum target luminance in the first pixel area required by the target image is 25% L _max , the LED display screen can determine the current value of the input current in the first pixel area to be the current value I of the pixel displaying 25% L _max luminance (L _max /4), the LED display can determine the PWM signal input to each pixel in the unit time according to the input current value I (L _max /4) and the target brightness of each pixel in the first pixel area Duty ratio, through the PWM signal to control the conduction time of the pixel in a unit time, so that each pixel displays a corresponding brightness in a unit time.

When the number of grayscale digits of the LED display is 13 bits, and the current value of the input current in the first pixel area is the current value I(L _max /2) of the pixel displaying 25% L _max brightness, then the LED display is at the input current When the value is I(L _max /4), the minimum brightness adjustment step is 1/8192 of 25% L _max , that is, L _max /32768. This makes it possible to adjust 8192 kinds of brightness when the maximum brightness displayed in the first pixel area is 25% L _max , that is, the contrast ratio remains at 1:8192. However, when the current is not adjusted, only 2048 kinds of brightness and a contrast ratio of 1:2048 can be realized when the maximum brightness of the display screen is 25% L _max . Therefore, the determination of the input current value according to the maximum brightness proposed by the embodiment of the present application can improve the brightness adjustment accuracy and increase the contrast of the display screen.

Optionally, the method shown in FIG. 4 may be specifically executed by a control module in the LED display screen for controlling light emission of the first pixel area.

The LED display screen may include a plurality of pixel areas, and one pixel area in the plurality of pixel areas is controlled by a control module to emit light. Each control module of the LED display can determine the input current value of the pixel area according to the maximum target brightness of the pixel in the corresponding pixel area of the control module required by the target image, and control each pixel to display the corresponding target according to the current value brightness.

For a target image, when the maximum target brightness of a pixel area (denoted as pixel area A) in the LED display screen is L _max , the LED display screen can determine that the input current value of the pixel area A is I(L _max ) , for example, if the number of grayscale digits of the LED display screen is K bits, then the minimum step for brightness adjustment of the pixel area A is 1/2 ^K of L _max . When the maximum target brightness of another pixel area (denoted as pixel area B) in the LED display screen is 50% L _max , the LED display screen can determine that the input current value of the pixel area B is I(L _max /2) , the minimum step of adjusting the brightness of the pixel area A is 1/2 ^K of 50% L _max , that is, the minimum step is 1/2 ^K+1 of L _max . This makes the maximum brightness that the LED display can display is L _max , the minimum brightness is 1/2 ^K+1 L _max , the number of gray-scale digits changes from the original K bits to K+1 bits, and the number of gray-scale digits increases by 1 bit. The brightness adjustment precision can be improved, and the contrast ratio of the display screen can be increased.

If the LED display can realize the current regulation of the pixel area when the maximum brightness is 25% L _max , then the LED display can realize the minimum brightness of 1/2 ^K+2 L _max and the number of grayscale bits is K+2. If the LED display can realize current regulation with smaller brightness, it can further increase the number of gray scale digits and increase the contrast.

According to the above solutions provided by the embodiments of the present application, the input current value is determined according to the maximum target brightness of the pixel area, which can improve brightness adjustment accuracy and increase the contrast of the display screen.

Above, the display method of the LED display screen provided by the embodiment of the present application is described in detail with reference to FIG. 4 . The screen projection device provided by the embodiment of the present application is described below.

Please refer to FIG. 5 , which shows a schematic structural diagram of a display device provided by an exemplary embodiment of the present application. The display device can be realized as all or a part of the LED display screen through software, hardware or a combination of the two. The device includes an acquisition module 401 and a control module 402 . Optionally, the display device further includes a memory 403 for storing computer program instructions.

An acquisition module, configured to acquire a target luminance set, the target luminance set being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen;

A control module, configured to determine a first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set;

The control module is also used for controlling each pixel in the first pixel region to display the target brightness corresponding to the target image according to the first current value.

Optionally, the control module is specifically used for:

According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, in the mapping relationship, the maximum target brightness and the second Corresponding to a current value.

Optionally, the mapping relationship includes a correspondence between multiple brightness intervals and multiple current values, the maximum target brightness belongs to a first brightness interval among the multiple brightness intervals, and the first brightness interval and the multiple current values value corresponding to this first current value.

Optionally, the current value corresponding to one of the multiple brightness intervals is a current value of the input current when a pixel displays the maximum brightness of the one brightness interval.

Optionally, the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel.

Optionally, the control module is specifically used for:

determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value;

According to the first current value and the display duration of each pixel in the first pixel area per unit time, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, the control module is specifically used for:

According to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal is used for Control the display duration of pixels in unit time;

According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image.

Please refer to FIG. 6 , which is a schematic structural diagram of a display screen 600 provided in an embodiment of the present application. As shown in FIG. 6 , the display screen 600 may include at least one processor, such as a processor 601 , at least one memory, such as a memory 602 , and at least one LED light board, such as an LED light board 603 . The display screen 600 may also include a communication bus 604 for realizing connection and communication between components.

Wherein, the memory 602 is used to store program instructions, and the processor 601 can read and execute the program instructions in the memory to control the display screen of the LED lamp panel.

Optionally, the display screen 600 can be composed of one or more boxes, and the display screen 600 can specifically include a sending card, a receiving card and an LED light board, the sending card includes a processor, a video data receiver and a memory, and the sending card It is used to control the entire display, and cut the data of the video source to fit the splicing display of the receiving card. The receiving card includes a processor, a video data receiver and a memory. The receiving card is used to control the LED light board of a single box, and is used to receive and process the display data distributed by the sending card.

In the display screen 600 shown in FIG. 6, the processor can be used to call the computer program stored in the memory, and specifically perform the following operations:

Acquiring a set of target luminances, the set of target luminances being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen;

determining a first current value of the input current in the first pixel region according to the maximum target brightness in the target brightness set;

According to the first current value, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, determining the first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set includes:

According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, in the mapping relationship, the maximum target brightness and the second Corresponding to a current value.

Optionally, the mapping relationship includes a correspondence between multiple brightness intervals and multiple current values, the maximum target brightness belongs to a first brightness interval among the multiple brightness intervals, and the first brightness interval and the multiple current values value corresponding to this first current value.

Optionally, the current value corresponding to one of the multiple brightness intervals is a current value of the input current when a pixel displays the maximum brightness of the one brightness interval.

Optionally, the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel.

Optionally, controlling each pixel in the first pixel region to display a target brightness corresponding to the target image according to the first current value includes:

determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value;

According to the first current value and the display duration of each pixel in the first pixel area per unit time, each pixel in the first pixel area is controlled to display a target brightness corresponding to the target image.

Optionally, controlling each pixel in the first pixel area to display a target brightness corresponding to the target image according to the first current value and the display duration of each pixel in the first pixel area per unit time includes :

According to the target luminance of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal is used for Control the display duration of pixels in unit time;

According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image.

Please refer to FIG. 7 , which provides a schematic structural diagram of an electronic device 700 according to an embodiment of the present application. As shown in FIG. 7 , the electronic device 700 may include: at least one processor 701 , a user interface 703 , a memory 705 , and at least one communication bus 702 . Wherein, the processor 701 may execute an instruction to control the user interface 703 to execute the display method as described in the method embodiment. The user interface 703 may include a display screen (Display) and a camera (Camera), and the optional user interface 703 may also include a standard wired interface and a wireless interface.

Wherein, the communication bus 702 is used to realize connection and communication between these components.

Optionally, the electronic device 700 may also include at least one network interface 704 .

Wherein, the network interface 704 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

The electronic device 700 can execute the method steps of the above embodiment shown in FIG. 3 . For the specific execution process, refer to the specific description of the embodiment shown in FIG. 3 , and details are not repeated here.

Wherein, the processor 701 may include one or more processing cores. The processor 701 uses various interfaces and lines to connect various parts of the entire electronic device 700, and executes by running or executing instructions, programs, code sets or instruction sets stored in the memory 705, and calling data stored in the memory 705. Various functions of the electronic device 700 and processing data. Optionally, the processor 701 may use at least one of Digital Signal Processing (Digital Signal Processing, DSP), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), and Programmable Logic Array (Programmable Logic Array, PLA). implemented in the form of hardware. The processor 701 may integrate one or a combination of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), a modem, and the like. Among them, the CPU mainly handles the operating system, user interface and application programs, etc.; the GPU is used to render and draw the content that needs to be displayed on the display screen; the modem is used to handle wireless communication. It can be understood that, the above-mentioned modem may not be integrated into the processor 701, but may be realized by a single chip.

Wherein, the memory 705 may include a random access memory (Random Access Memory, RAM), or may include a read-only memory (Read-Only Memory). Optionally, the memory 705 includes a non-transitory computer-readable storage medium (non-transitory computer-readable storage medium). Memory 705 may be used to store instructions, programs, codes, sets of codes, or sets of instructions. The memory 705 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), Instructions and the like for implementing the above method embodiments; the storage data area can store the data and the like involved in the above method embodiments. Optionally, the memory 705 may also be at least one storage device located away from the aforementioned processor 701 . As shown in FIG. 7 , the memory 705 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a screen-casting application program.

The embodiment of the present application also provides a computer storage medium, the computer storage medium can store a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the method steps of the embodiment shown in Figure 3 above, specifically executing For the process, reference may be made to the specific description of the embodiment shown in FIG. 3 , and details are not repeated here.

The device where the storage medium is located may be a communication device.

The hardware part of the communication device can be composed of a touch display module, an intelligent processing system (including a controller), etc., which are combined by integral structural parts and supported by a dedicated software system. The touch display module It includes a display screen, a touch component and a backlight component. The backlight component is used to provide a backlight source for the display screen. The display screen generally uses a liquid crystal display device for displaying images. The touch component is set on the display screen or on the display The front end of the screen is used to collect the user's touch operation data, and send the collected touch operation data to the intelligent processing system for processing.

In actual use, the display screen of the communication device displays picture data. When the user clicks the content displayed on the display screen with a touch object such as a finger or a stylus, for example, when clicking a graphic button displayed on the display screen, the smart interactive tablet The touch component will collect the touch data, so that the touch component converts the touch data into the coordinate data of the touch point and sends it to the intelligent processing system, or sends it to the intelligent processing system, and the intelligent processing system converts it into a touch point The coordinate data of the touch point, after the intelligent processing system obtains the coordinate data of the touch point, realizes the corresponding control operation according to the preset program, drives the display content to change, and realizes diversified display and operation effects.

Touch components can be divided into five basic types based on technical principles: vector pressure sensing technology touch components, resistive technology touch components, capacitive technology touch components, electromagnetic technology touch screens, infrared technology touch components, and surface acoustic wave technology touch components. According to the working principle of the touch component and the medium for transmitting information, the touch component can be divided into four types: resistive, capacitive induction, electromagnetic induction, infrared and surface acoustic wave.

When the user touches the display screen with a finger or a pen, the touch component can collect the data of the touch point and send it to the intelligent processing system, and then implement different functional applications with the built-in software of the intelligent processing system, thereby realizing the control of the intelligent processing system Touch controls.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and/or nonvolatile memory such as read only memory (ROM) or flash RAM. The memory is an example of a computer readable medium.

Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

The above are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (17)

1. A display method for an LED display, comprising: Acquiring a set of target luminances, the set of target luminances being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen; determining a first current value of an input current in the first pixel region according to the maximum target brightness in the target brightness set; According to the first current value, the display duration of each pixel in the first pixel area is controlled, so that each pixel in the first pixel area displays a target brightness corresponding to the target image. 2. The method according to claim 1, wherein the determining the first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set comprises: According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, and the maximum The target brightness corresponds to the first current value. 3. The method according to claim 2, wherein the mapping relationship includes correspondence between multiple brightness intervals and multiple current values, and the maximum target brightness belongs to the first of the multiple brightness intervals. A brightness interval, the first brightness interval corresponds to the first current value in the plurality of current values. 4. The method according to claim 3, wherein the current value corresponding to one of the plurality of brightness intervals is the current value of the input current when a pixel displays the maximum brightness of the one brightness interval. 5. The method according to claim 2, wherein the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel. 6. The method according to any one of claims 1 to 5, wherein the display duration of each pixel in the first pixel area is controlled according to the first current value, so that the Each pixel in the first pixel area displays the target brightness corresponding to the target image, including: determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value; Controlling each pixel in the first pixel area to display a target brightness corresponding to the target image according to the first current value and the display duration of each pixel in the first pixel area per unit time. 7. The method according to claim 6, wherein the first pixel area is controlled according to the first current value and the display duration of each pixel in the first pixel area per unit time. Each pixel in shows the target brightness corresponding to the target image, including: According to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal Duty ratio is used to control the display duration of pixels in unit time; According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image. 8. A display device for an LED display, comprising: An acquisition module, configured to acquire a target luminance set, the target luminance set being a set of target luminances of pixels in a first pixel area corresponding to the target image to be displayed, the first pixel area including at least one pixel of the display screen; a control module, configured to determine a first current value of the input current of the first pixel region according to the maximum target brightness in the target brightness set; The control module is further configured to control the display duration of each pixel in the first pixel area according to the first current value, so that each pixel in the first pixel area displays a display corresponding to the target image target brightness. 9. The device according to claim 8, wherein the control module is specifically used for: According to the mapping relationship and the maximum target brightness, determine the first current value of the input current of the first pixel area, the mapping relationship is used to characterize the corresponding relationship between the brightness of the pixel and the current value, and the maximum The target brightness corresponds to the first current value. 10. The device according to claim 9, wherein the mapping relationship includes correspondence between multiple brightness intervals and multiple current values, and the maximum target brightness belongs to the first of the multiple brightness intervals. A brightness interval, the first brightness interval corresponds to the first current value in the plurality of current values. 11 . The device according to claim 10 , wherein the current value corresponding to one of the plurality of brightness intervals is the current value of the input current when a pixel displays the maximum brightness of the one brightness interval. 12 . The device according to claim 9 , wherein the mapping relationship is a function of the brightness of the pixel changing with the current value of the input current of the pixel. 13 . 13. The device according to any one of claims 8 to 12, wherein the control module is specifically used for: determining the display duration of each pixel in the first pixel area per unit time according to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value; Controlling each pixel in the first pixel area to display a target brightness corresponding to the target image according to the first current value and the display duration of each pixel in the first pixel area per unit time. 14. The device according to claim 13, wherein the control module is specifically used for: According to the target brightness of each pixel in the first pixel area corresponding to the target image and the first current value, determine the duty cycle of the pulse width modulation PWM signal corresponding to each pixel, and the duty cycle of the PWM signal Duty ratio is used to control the display duration of pixels in unit time; According to the first current value and the PWM signal corresponding to each pixel in the first pixel area, each pixel in the first pixel area is controlled to display the target brightness corresponding to the target image. 15. A computer storage medium, characterized in that the computer storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the display method according to any one of claims 1 to 7 . 16. A computer program product, comprising a computer program, characterized in that, when the computer program is executed by a processor, the display method according to any one of claims 1 to 7 is realized. 17. An electronic device, characterized in that it comprises: a processor and a memory; wherein, the memory stores a computer program, the computer program is suitable for being loaded by the processor and executing any of the following claims 1 to 7 One of the described display methods.

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