CN112419968A

CN112419968A - Data display method and display screen

Info

Publication number: CN112419968A
Application number: CN202011365064.3A
Authority: CN
Inventors: 张文杭
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-02-26
Anticipated expiration: 2040-11-27
Also published as: CN112419968B

Abstract

The application provides a data display method and a display screen, wherein the method comprises the following steps: the main control chip sends the control signal to the light-emitting module; aiming at each light-emitting module, receiving a control signal, acquiring a stored pixel value from a register, and displaying the pixel value on M pixel points controlled by the light-emitting module; if the light-emitting module is not the last light-emitting module, transmitting the control signal to the next light-emitting module connected with the light-emitting module in series; the main control chip sends data to be displayed to the light-emitting module; for each light-emitting module, receiving data to be displayed, selecting pixel values of M pixel points controlled by the light-emitting module from the data to be displayed, and storing the selected pixel values into a register; and if the light-emitting module is not the tail light-emitting module of the sub-control circuit, transmitting the data to be displayed to the next light-emitting module connected with the light-emitting module in series. Through the technical scheme of this application, adopt static scanning mode to control the display screen, promote the display effect of display screen.

Description

Data display method and display screen

Technical Field

The application relates to the technical field of display screens, in particular to a data display method and a display screen.

Background

With the rapid development of the LED (Light Emitting Diode) display screen industry, the LED technology is continuously developed, the brightness of the LED display screen is continuously improved, and the size of the LED display screen is smaller, which indicates that more LED display screens will be a big trend when entering the room. However, as the brightness and density of LED display screens increase, higher requirements are also placed on the control of LED display screens.

Regarding the control method of the LED display screen, the general control method is a row-column control mode, which is called a scan mode, and the scan mode of the LED display screen may be a dynamic scan mode, which is to perform "point-to-column" control from the output of the driver ic to the pixel point.

However, when the LED display screen is controlled by using the dynamic scanning mode, the display effect is poor (e.g., upper and lower ghosts, dark first line, uneven low gray, high contrast interference, etc.), and the brightness loss is large.

Disclosure of Invention

In a first aspect, the present application provides a data display method, in which a display screen is divided into K sub-regions, the display screen includes K groups of sub-control circuits, and the K groups of sub-control circuits correspond to the K sub-regions one to one; for each group of sub-control circuits, each sub-control circuit comprises a main control chip and a plurality of light-emitting modules, the light-emitting modules are connected in series, each light-emitting module is used for controlling M pixel points on a sub-region corresponding to the sub-control circuit, K and M are positive integers, and the method comprises the following steps:

the main control chip sends a control signal for indicating the switching of the video memory to a light-emitting module connected with the main control chip; for each light-emitting module of the sub-control circuit, the light-emitting module receives the control signal, acquires a stored pixel value from a register of the light-emitting module, and displays the pixel value on M pixel points controlled by the light-emitting module; if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the control signal to the next light-emitting module connected with the light-emitting module in series;

the main control chip sends data to be displayed of a sub-area corresponding to the sub-control circuit to a light-emitting module connected with the main control chip, wherein the data to be displayed comprises a pixel value of each pixel point on the sub-area; for each light-emitting module of the sub-control circuit, the light-emitting module receives the data to be displayed, selects pixel values of M pixel points controlled by the light-emitting module from the data to be displayed, and stores the selected pixel values into the register; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the data to be displayed to the next light-emitting module connected with the light-emitting module in series.

In a possible implementation manner, after the main control chip sends a control signal for instructing video memory switching to the light emitting module connected to the main control chip, the method further includes:

the main control chip sends full configuration parameters to the light emitting modules connected with the main control chip, and the full configuration parameters are used for configuring all the light emitting modules of the sub-control circuit; for each light emitting module of the sub-control circuit, the light emitting module receiving the full configuration parameter, configuring the light emitting module based on the full configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the full configuration parameter to the next light-emitting module connected with the light-emitting module in series.

the main control chip sends a string parameter set to the light emitting modules connected with the main control chip, the string parameter set comprises a plurality of string configuration parameters, the number of the string configuration parameters is the same as that of the light emitting modules of the sub-control circuit, and the string configuration parameters correspond to the light emitting modules one to one; the string configuration parameters corresponding to each light-emitting module of the sub-control circuit are only used for configuring the light-emitting module;

for each light emitting module of the sub-control circuit, the light emitting module receives the string parameter set, selects a string configuration parameter corresponding to the light emitting module from the string parameter set, and configures the light emitting module based on the string configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the string parameter set to the next light-emitting module connected with the light-emitting module in series.

In one possible embodiment, the method further comprises: the main control chip sends a clock signal at a fixed clock frequency; for each light emitting module of the sub-control circuit, the light emitting module receiving the clock signal at the fixed clock frequency; the main control chip sends the control signal at the rising edge of each clock signal, and the light-emitting module receives the control signal at the rising edge of each clock signal; the main control chip sends the data to be displayed on the rising edge of each clock signal, and the light-emitting module receives the data to be displayed on the rising edge of each clock signal; or, the main control chip sends the control signal at the falling edge of each clock signal, and the light emitting module receives the control signal at the falling edge of each clock signal; the main control chip sends the data to be displayed on the falling edge of each clock signal, and the light-emitting module receives the data to be displayed on the falling edge of each clock signal.

In a possible embodiment, the selecting, by the lighting module, pixel values of M pixel points controlled by the lighting module from the data to be displayed includes: the light-emitting module determines the target position of the light-emitting module in all light-emitting modules of the sub-control circuit; and selecting the pixel values of M pixel points controlled by the light-emitting module from the data to be displayed based on the target position.

In a second aspect, the present application provides a display screen, where the display screen is divided into K sub-regions, and the display screen includes K groups of sub-control circuits, where the K groups of sub-control circuits correspond to the K sub-regions one to one; for each group of sub-control circuits, each sub-control circuit comprises a main control chip and a plurality of light-emitting modules, the light-emitting modules are connected in series, each light-emitting module is used for controlling M pixel points on the sub-region corresponding to the sub-control circuit, and K and M are positive integers, wherein:

the main control chip is used for sending a control signal for indicating the switching of the video memory to the light-emitting module connected with the main control chip; the light-emitting module is used for receiving the control signal, acquiring a stored pixel value from a register of the light-emitting module, and displaying the pixel value on M pixel points controlled by the light-emitting module; if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the control signal to the next light-emitting module connected with the light-emitting module in series;

the main control chip is further configured to send data to be displayed of a sub-region corresponding to the sub-control circuit to a light emitting module connected to the main control chip, where the data to be displayed includes a pixel value of each pixel point on the sub-region; the light-emitting module is further configured to receive the data to be displayed, select pixel values of M pixel points controlled by the light-emitting module from the data to be displayed, and store the selected pixel values in the register; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the data to be displayed to the next light-emitting module connected with the light-emitting module in series.

In a possible implementation manner, the main control chip is further configured to send a full configuration parameter to the light emitting modules connected to the main control chip, where the full configuration parameter is used to configure all the light emitting modules of the sub-control circuits; the light-emitting module is further configured to receive the full configuration parameter, and configure the light-emitting module based on the full configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the full configuration parameter to the next light-emitting module connected with the light-emitting module in series.

In a possible implementation manner, the main control chip is further configured to send a string parameter set to the light emitting modules connected to the main control chip, where the string parameter set includes a plurality of string configuration parameters, the number of the string configuration parameters is the same as the number of the light emitting modules of the sub-control circuit, and the string configuration parameters correspond to the light emitting modules one to one; the string configuration parameters corresponding to each light-emitting module of the sub-control circuit are only used for configuring the light-emitting module; the light emitting module is further configured to receive the string parameter set, select a string configuration parameter corresponding to the light emitting module from the string parameter set, and configure the light emitting module based on the string configuration parameter; and if the light emitting module is not the last light emitting module of the sub-control circuit, transmitting the string parameter set to the next light emitting module connected in series with the light emitting module.

The main control chip is also used for sending a clock signal at a fixed clock frequency; the light emitting module is further used for receiving the clock signal at the fixed clock frequency; the main control chip is further configured to send the control signal on a rising edge of each clock signal, and the light emitting module is further configured to receive the control signal on a rising edge of each clock signal; the main control chip is further configured to send the data to be displayed on a rising edge of each clock signal, and the light emitting module is further configured to receive the data to be displayed on the rising edge of each clock signal; or, the main control chip is further configured to send the control signal on a falling edge of each clock signal, and the light emitting module is further configured to receive the control signal on a falling edge of each clock signal; the main control chip is further configured to send the data to be displayed on a falling edge of each clock signal, and the light emitting module is further configured to receive the data to be displayed on a falling edge of each clock signal.

In a possible implementation manner, when the light emitting module selects the pixel values of M pixel points controlled by the light emitting module from the data to be displayed, the following steps are specifically performed: determining the target positions of the light-emitting module in all light-emitting modules of the sub-control circuit; and selecting the pixel values of M pixel points controlled by the light-emitting module from the data to be displayed based on the target position.

According to the technical scheme, in the embodiment of the application, the sub-control circuit of the display screen comprises a plurality of light-emitting modules, the light-emitting modules are connected in series, and for each light-emitting module, after receiving the data to be displayed, if the light-emitting module is not the last light-emitting module, the data to be displayed is transmitted to the next light-emitting module connected with the light-emitting module in series. For each light emitting module, after receiving the data to be displayed, the pixel values of the M pixel points controlled by the light emitting module are selected from the data to be displayed, and the pixel values are displayed on the M pixel points controlled by the light emitting module, so that data display is realized. The main control chip transmits all pixel values of the sub-regions corresponding to the sub-control circuits at one time, each light-emitting module can display the pixel values of M pixel points, thereby adopting a static scanning mode to control the display screen, avoiding adopting a dynamic scanning mode to control the display screen, avoiding scanning logic control, improving the display effect of the display screen, shortening the development period of the display screen, reducing the production cost of the display screen, avoiding the poor display effect (such as upper and lower ghost images, the first line is dark, uneven low gray, high contrast interference and the like), and solving the problems of large brightness loss and the like.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings of the embodiments of the present application.

FIG. 1 is a schematic structural diagram of an LED display screen according to an embodiment of the present application;

2A-2C are schematic diagrams of an LED lamp bead according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an LED display screen according to an embodiment of the present application;

fig. 4A is a schematic structural diagram of an LED lamp bead according to an embodiment of the present application;

FIG. 4B is a schematic diagram of clock signals and data signals in one embodiment of the present application;

fig. 5 is a flowchart of a data display method according to an embodiment of the present application.

Detailed Description

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Depending on the context, moreover, the word "if" as used may be interpreted as "at … …" or "when … …" or "in response to a determination".

In the related art, the scanning mode of the display screen may be a dynamic scanning mode, in which each row needs to be scanned by polling, for example, 32 rows exist in total, the 1 st row is scanned, then the 2 nd row is scanned, and so on, until the 32 th row is scanned, then the 1 st row is scanned, and so on. When the dynamic scanning mode is adopted to control the display screen, the problems of poor display effect (such as upper and lower ghost images, dark first line, uneven low gray, high contrast interference and the like), high brightness loss, complex logic control, difficult PCB wiring, long development period of the display screen, high price of the display screen and the like exist.

In view of the above findings, a display screen, such as an LED display screen, is provided in the embodiment of the present application, and of course, the LED display screen is only an example, and the type of the display screen is not limited, and the LED display screen is taken as an example in the following.

Illustratively, the sub-control circuit of the LED display screen includes a plurality of light-emitting modules, the plurality of light-emitting modules are connected in series, the main control chip transmits all pixel values of the sub-region corresponding to the sub-control circuit at one time, and each light-emitting module except the last light-emitting module transmits the pixel values to the next light-emitting module connected in series with the light-emitting module. Each light-emitting module can receive the pixel values, and the pixel values of the pixel points controlled by the light-emitting module are selected from the pixel values, so that data display is realized.

In the above mode, the LED display screen is controlled by using a static scanning mode, rather than a dynamic scanning mode, where the static scanning mode refers to scanning each line simultaneously, for example, when 32 lines exist in total, line 1, line 2, line …, and line 32 are scanned at a time. Obviously, because the LED display screen does not need to be controlled by adopting a dynamic scanning mode, the display effect of the LED display screen can be improved, the development period of the LED display screen is shortened, the production cost of the LED display screen is reduced, and the problems that the LED display screen has poor display effect, high brightness loss and the like are avoided.

The following describes the technical solution of the embodiment of the present application with reference to a specific application scenario.

Referring to fig. 1, a schematic structural diagram of an LED display screen is shown, where the LED display screen may include, but is not limited to, a main control chip and a plurality of light emitting modules, and the light emitting modules may be LED lamp beads, and certainly, the LED lamp beads are only examples, and the types of the light emitting modules are not limited, and the following description will be given by taking the LED lamp beads as examples.

Referring to fig. 1, all the LED lamp beads are connected in series, and each LED lamp bead is used to control M pixel points on the LED display screen, where M is a positive integer, and if M is 1, 2, 3, 4, 6, 8, 9, 16, etc., the value of M is not limited, and is related to the design mode of the LED lamp beads. For example, if the LED lamp bead is designed to support the control of 4 pixels, the value of M may be 4. If the LED lamp bead is designed to support the control of 9 pixel points, the value of M can be 9, and the rest can be done by analogy.

The number of the LED light beads is related to the total number N of pixels (i.e. the total number of pixels of a frame of image, which may also be referred to as resolution) and M that need to be displayed on the LED display screen, for example, the number of the LED light beads may be rounded up by dividing N by M. Assuming that the total number of pixels in one frame of image is 1920 × 1000, that is, the total number of pixels N is 1920000, and the value of M is 4, the number of LED beads is 480000.

Illustratively, for each LED lamp bead, M pixel points controlled by the LED lamp bead may include two adjacent rows of pixel points on the LED display screen, and the number of the pixel points in each row is the same. For convenience of description, taking the value of M as 4 as an example, see fig. 2A, which is a schematic diagram of an LED lamp bead, the LED lamp bead can control 4 pixels on an LED display screen, where the 4 pixels are pixels in two adjacent rows, and the number of the pixels in each row is 2. If the value of M is 8, 8 pixel points on the LED display screen can be controlled by the LED lamp beads, the 8 pixel points are adjacent two lines of pixel points, and the number of the pixel points on each line is 4, so that the rest can be done.

Illustratively, for each LED lamp bead, M pixel points controlled by the LED lamp bead may include pixel points in a row on the LED display screen, that is, the number of the pixel points in the row is M. For convenience of description, taking the value of M as 4 as an example, see fig. 2B, which is a schematic diagram of an LED lamp bead, the LED lamp bead can control 4 pixels on an LED display screen, and the 4 pixels are pixels in a row, that is, the pixels in the row are 4. If the value of M is 8, 8 pixel points on the LED display screen can be controlled by the LED lamp beads, the 8 pixel points are pixel points on a line, the number of the pixel points on the line is 8, and the like.

Illustratively, for each LED lamp bead, M pixel points controlled by the LED lamp bead may include M adjacent rows of pixel points on the LED display screen, where the number of pixel points in each row is one. For convenience of description, taking the value of M as 4 as an example, see fig. 2C, which is a schematic diagram of an LED lamp bead, the LED lamp bead can control 4 pixels on an LED display screen, where the 4 pixels are pixels in four adjacent rows, and the pixel in each row is 1. If the value of M is 8, 8 pixel points on the LED display screen can be controlled by the LED lamp beads, the 8 pixel points are adjacent eight rows of pixel points, the number of the pixel points in each row is 1, and the rest can be done by analogy.

Of course, the above are only a few examples, and the implementation is not limited as long as the LED lamp beads can control M pixel points on the LED display screen. For convenience of description, in the following embodiments, the value of M is 4, and 4 pixels are pixels in two adjacent rows, and each row has 2 pixels.

In summary, assuming that the total number N of the pixels is 20 × 12 (i.e. 20 rows and 12 columns, in practical applications, the total number N of the pixels is much greater than 240, and here is only an example for convenience of description), the first LED lamp bead is used to control the 1 st and 2 nd pixels on the first row on the LED display screen, the 1 st and 2 nd pixels on the second row, the second LED lamp bead is used to control the 3 rd and 4 th pixels on the first row on the LED display screen, the 3 rd and 4 th pixels on the second row, and so on, the seventh LED lamp bead is used to control the 1 st and 2 nd pixels on the third row on the LED display screen, the 1 st and 2 nd pixels on the fourth row, and so on.

In a possible implementation manner, referring to fig. 3, in order to avoid an excessive number of LED beads connected in series, the LED display screen may be divided into K sub-regions, and the LED display screen may include K groups of sub-control circuits, where the K groups of sub-control circuits correspond to the K sub-regions one to one.

For each group of sub-control circuits, the sub-control circuit may include a main control chip and a plurality of LED lamp beads (each LED lamp bead is used to control M pixel points on a sub-region corresponding to the sub-control circuit), and the plurality of LED lamp beads of the sub-control circuit are connected in series, and the LED lamp beads of different sub-control circuits are not required to be connected in series. Illustratively, K and M are both positive integers. When the value of K is 1, the LED display screen shown in fig. 3 is actually the LED display screen shown in fig. 1, that is, the LED display screen includes only 1 sub-region, which is all display regions of the LED display screen, and the LED display screen includes only 1 group of sub-control circuits, which is the LED display screen itself.

For example, the LED display screen may be divided into K sub-regions, and K groups of sub-control circuits correspond to the K sub-regions one to one, for example, sub-control circuits 1 correspond to sub-regions 1 one to one, sub-control circuits 2 correspond to sub-regions 2 one to one, and so on, and the sub-control circuits K correspond to sub-regions K one to one.

Assuming that the total number of pixel points to be displayed on the LED display screen is N, the total number of pixel points to be displayed in the sub-area 1 is N1, the total number of pixel points to be displayed in the sub-area 2 is N2, …, and the total number of pixel points to be displayed in the sub-area K is NK, then N1, N2, …, and the sum of NK is N.

On this basis, the number of the LED lamp beads of the sub-control circuit 1 may be the upward value obtained by dividing N1 by M, the number of the LED lamp beads of the sub-control circuit 2 may be the upward value obtained by dividing N2 by M, and so on, and the number of the LED lamp beads of the sub-control circuit K may be the upward value obtained by dividing NK by M.

Assuming that the total number of pixels of one frame of image is 1920 × 1000, one frame of image is divided into 10 sub-regions, the total number of pixels of each sub-region is 192000, if the value of M is 4, the LED display screen includes 10 groups of sub-control circuits, and the number of LED lamp beads of each group of sub-control circuits is 48000.

Regarding the structure of the multiple groups of sub-control circuits, the implementation manner of each group of sub-control circuits is the same, and for convenience of description, the implementation manner of one group of sub-control circuits is taken as an example in the following. Regarding the implementation of fig. 1, it is also an implementation of a set of sub-control circuits, that is, the LED display screen as a whole is a set of sub-control circuits.

Based on the application scenario, the embodiment of the application provides an LED display screen, the LED display screen is divided into K sub-areas, the LED display screen comprises K groups of sub-control circuits, and the K groups of sub-control circuits correspond to the K sub-areas one by one; for each group of sub-control circuits, the sub-control circuit can comprise a main control chip and a plurality of LED lamp beads, the LED lamp beads are connected in series, each LED lamp bead is used for controlling M pixel points on a sub-region corresponding to the sub-control circuit, and K and M are positive integers.

The main control chip is used for sending a control signal (i.e. a control signal for indicating video memory switching) to the LED lamp beads connected with the main control chip (i.e. the first LED lamp bead of all the LED lamp beads of the sub-control circuit). And aiming at each LED lamp bead of the sub-control circuit, the LED lamp bead is used for receiving the control signal, obtaining the stored pixel value from the register of the LED lamp bead, and displaying the pixel value on M pixel points controlled by the LED lamp bead. And if the LED lamp bead is not the last LED lamp bead of the sub-control circuit (namely the last LED lamp bead of all the LED lamp beads of the sub-control circuit is marked as the last LED lamp bead), transmitting the control signal to the next LED lamp bead connected with the LED lamp bead in series.

After the main control chip sends the control signal to the LED lamp bead connected with the main control chip, the main control chip is further used for sending data to be displayed of the sub-region corresponding to the sub-control circuit to the LED lamp bead connected with the main control chip, and the data to be displayed comprises the pixel value of each pixel point on the sub-region. And aiming at each LED lamp bead of the sub-control circuit, the LED lamp bead is used for receiving the data to be displayed, selecting the pixel values of M pixel points controlled by the LED lamp bead from the data to be displayed, and storing the selected pixel values into the register of the LED lamp bead. And if the LED lamp bead is not the last LED lamp bead of the sub-control circuit, transmitting the data to be displayed to the next LED lamp bead connected with the LED lamp bead in series.

For example, the main control chip sends the control signal and the data to be displayed to a first LED lamp bead, the first LED lamp bead sends the control signal and the data to be displayed to a second LED lamp bead which is connected with the LED lamp bead in series, the second LED lamp bead sends the control signal and the data to be displayed to a third LED lamp bead which is connected with the LED lamp bead in series, and the rest is done in the same way until the last LED lamp bead receives the control signal and the data to be displayed.

For example, the control signal is used to instruct the video memory to switch (i.e., to display data), so that, for each LED lamp bead, after receiving the control signal, the stored pixel value is obtained from the register of the LED lamp bead, and the pixel value is displayed on M pixel points controlled by the LED lamp bead.

Illustratively, the master control chip sends a clock signal at a fixed clock frequency (e.g., 10Mhz), and for each LED lamp bead, the LED lamp bead receives the clock signal at the fixed clock frequency (e.g., 10 Mhz). On this basis, control signal is sent at every clock signal's rising edge to main control chip, and this control signal is received at every clock signal's rising edge to LED lamp pearl. The main control chip sends data to be displayed on the rising edge of each clock signal, and the LED lamp beads receive the data to be displayed on the rising edge of each clock signal. Or the main control chip sends a control signal on the falling edge of each clock signal, and the LED lamp bead receives the control signal on the falling edge of each clock signal. The main control chip sends data to be displayed on the falling edge of each clock signal, and the LED lamp beads receive the data to be displayed on the falling edge of each clock signal. Or the main control chip sends control signals on the rising edge and the falling edge of each clock signal, and the LED lamp beads receive the control signals on the rising edge and the falling edge of each clock signal. The main control chip sends data to be displayed on the rising edge and the falling edge of each clock signal, and the LED lamp beads receive the data to be displayed on the rising edge and the falling edge of each clock signal.

Referring to fig. 4A, which is a schematic structural diagram of LED lamp beads, for each LED lamp bead, the LED lamp bead may include a clock input pin CLK-IN, a DATA input pin DATA-IN, a clock output pin CLK-OUT, and a DATA output pin DATA-OUT. The LED lamp beads receive clock signals through CLK-IN, receive control signals and DATA to be displayed through DATA-IN, transmit clock signals to the next LED lamp bead IN series connection with the LED lamp beads through CLK-OUT, and transmit control signals and DATA to be displayed to the next LED lamp bead IN series connection with the LED lamp beads through DATA-OUT.

Illustratively, for each LED lamp bead, the CLK-IN of the LED lamp bead is connected with the CLK-OUT of the last LED lamp bead IN series connection with the LED lamp bead, the DATA-IN of the LED lamp bead is connected with the DATA-OUT of the last LED lamp bead IN series connection with the LED lamp bead, the CLK-OUT of the LED lamp bead is connected with the CLK-IN of the next LED lamp bead IN series connection with the LED lamp bead, and the DATA-OUT of the LED lamp bead is connected with the DATA-IN of the next LED lamp bead IN series connection with the LED lamp bead.

Continuing to refer to fig. 4A, to each LED lamp pearl, this LED lamp pearl can also include VCC1 pin, VCC2 pin and GND pin, VCC1 pin and VCC2 pin can be used for providing power input for the LED lamp pearl, be used for supplying power for the LED lamp pearl promptly, and the GND pin can be ground pin.

Referring to fig. 4B, a schematic diagram of a clock signal (CLK, which may also be denoted as SCLK) and a DATA signal (DATA, which may also be denoted as SDI) is shown, for each LED lamp bead, the LED lamp bead may receive the clock signal at a fixed clock frequency (e.g., 10Mhz), and receive a DATA signal based on the clock signal, where the DATA signal may be a control signal and DATA to be displayed. For example, after receiving a clock signal, the LED lamp bead may determine a rising edge of the clock signal, and receive a data signal at the rising edge of the clock signal; or after receiving the clock signal, the LED lamp bead can determine the falling edge of the clock signal and receive the data signal at the falling edge of the clock signal; or after receiving the clock signal, the LED lamp bead can determine the rising edge and the falling edge of the clock signal and receive the data signal at the rising edge and the falling edge of the clock signal.

For each LED lamp bead, after receiving the control signal, the LED lamp bead can acquire the stored pixel value from the register of the LED lamp bead, and the pixel value is displayed on M pixel points controlled by the LED lamp bead. After receiving the data to be displayed, the LED lamp bead can select the pixel values of M pixel points controlled by the LED lamp bead from the data to be displayed, and the selected pixel values are stored in a register.

For example, the control signal may be a video memory switching instruction, and the control signal is used to instruct video memory switching, that is, displaying the pixel value already stored in the register and storing a new pixel value in the register.

For example, for each LED lamp bead, there may be a register corresponding to the LED lamp bead, where the register is used to store pixel values of M pixel points controlled by the LED lamp bead.

For example, the display process of each frame of image may be recorded as a display period, in the first display period, the main control chip sends the control signal and the data to be displayed in the first frame of image (i.e., the data to be displayed in the sub-region corresponding to the sub-control circuit in the first frame of image), in the second display period, the main control chip sends the control signal and the data to be displayed in the second frame of image, and so on.

In the first display period, after the LED lamp beads receive the control signals, the registers of the LED lamp beads do not store pixel values, so that the LED lamp beads do not display the pixel values on the LED display screen.

After receiving the data to be displayed, the LED lamp bead can select the pixel values of M pixels controlled by the LED lamp bead from the data to be displayed, and store the selected pixel values into the register of the LED lamp bead, that is, store the pixel values of M pixels controlled by the LED lamp bead into the register.

In the second display period, after the LED lamp bead receives the control signal, since the register of the LED lamp bead already has the pixel value (i.e., the pixel values of the M pixels stored in the first display period), the LED lamp bead obtains the stored pixel value from the register of the LED lamp bead, deletes the pixel values from the register, and displays the pixel value on the M pixels of the LED display screen controlled by the LED lamp bead.

By analogy, each display period can be processed in the above manner, and details are not described herein.

Illustratively, when the pixel value is stored in the register, the LED lamp bead selects the pixel value a1 of the first pixel point controlled by the LED lamp bead from the data to be displayed, and stores the pixel value a1 in the register, then the LED lamp bead selects the pixel value a2 of the second pixel point controlled by the LED lamp bead from the data to be displayed, and stores the pixel value a2 in the register, and so on, the LED lamp bead selects the pixel value aM of the mth pixel point controlled by the LED lamp bead from the data to be displayed, and stores the pixel value aM in the register.

When the pixel value in the register is displayed, the LED lamp beads acquire the stored pixel value a1 from the register, the pixel value a1 is displayed at the first pixel point of the LED display screen controlled by the LED lamp beads, the LED lamp beads acquire the stored pixel value a2 from the register, the pixel value a2 is displayed at the second pixel point of the LED display screen controlled by the LED lamp beads, and so on, the stored pixel value aM is acquired from the register, and the pixel value aM is displayed at the Mth pixel point of the LED display screen controlled by the LED lamp beads.

Illustratively, the LED lamp beads select pixel values of M pixel points controlled by the LED lamp beads from data to be displayed, which may include but are not limited to: the LED lamp beads determine the target positions of the LED lamp beads in all the LED lamp beads of the sub-control circuit, and the pixel values of M pixel points controlled by the LED lamp beads are selected from the data to be displayed based on the target positions. For example, the target positions of the LED lamp beads in all the LED lamp beads of the sub-control circuit may be preconfigured in the LED lamp beads, that is, the target positions may be directly determined by the LED lamp beads. And a mapping relation between a target position and pixel values of the M pixels (which represents which pixel values in the data to be displayed, namely positions of the pixel values of the M pixels in all the pixel values of the data to be displayed) is configured in advance for the LED lamp beads, and based on the target position, the LED lamp beads can select the pixel values of the M pixels corresponding to the target position from the data to be displayed.

For example, assuming that the total number N of the pixels is 20 × 12 (i.e., 20 rows and 12 columns), the data to be displayed sequentially includes the pixel value of the 1 st pixel in the 1 st row, the pixel value of the 2 nd pixel in the 1 st row, …, the pixel value of the 12 th pixel in the 1 st row, and the like.

Referring to fig. 2B, the LED lamp beads can control 4 pixel points in a row, and for the first LED lamp bead, the target position is 1, and 4 pixel points corresponding to the target position 1 are 1 to 4, so that the 1 st to 4 th pixel values are selected from the data to be displayed. For the second LED lamp bead, the target position is 2, and 4 pixel points corresponding to the target position 2 are 5-8, so that the 5 th-8 th pixel value is selected from the data to be displayed. For the third LED lamp bead, the target position is 3, and 4 pixel points corresponding to the target position 3 are 9-12, so that the 9 th-12 th pixel value is selected from the data to be displayed. For the fourth LED lamp bead, the target position is 4, and 4 pixel points corresponding to the target position 4 are 13-16 (namely, the 1 st-4 th pixel points in the second row), so that the 13 th-16 th pixel value is selected from the data to be displayed, and the like.

Referring to fig. 2A, the LED lamp bead can control 4 pixels in two adjacent rows, and for the first LED lamp bead, the target position is 1, and 4 pixels corresponding to the target position 1 are 1, 2, 13, and 14 (the 1 st and 2 nd pixels in the first row, and the 1 st and 2 nd pixels in the second row), so that the 1 st, 2 nd, 13 th, and 14 th pixel values are selected from the data to be displayed. For the second LED lamp bead, the target position is 2, and 4 pixel points corresponding to the target position 2 are 3, 4, 15, and 16 (the 3 rd and 4 th pixel points in the first row, and the 3 rd and 4 th pixel points in the second row), so that the 3 rd, 4 th, 15 th, and 16 th pixel values are selected from the data to be displayed. …, for the seventh LED lamp bead, the target position is 7, and the 4 pixels corresponding to the target position 7 are 25, 26, 37, 38 (the 1 st and 2 nd pixels in the third row, and the 1 st and 2 nd pixels in the fourth row), so that the 25 th, 26 th, 37 th, and 38 th pixel values are selected from the data to be displayed, and so on.

For another example, assuming that the total number N of the pixels is 20 × 12 (i.e., 20 rows and 12 columns), the data to be displayed sequentially includes the pixel values of the 1 st to 12 th pixels in the 1 st row, the 1 st to 12 th pixels in the 3 rd row, the 1 st to 12 th pixels in the 5 th row, …, and the 1 st to 12 th pixels in the 19 th row. Then, the data to be displayed sequentially includes pixel values of 1 st to 12 th pixel points in the 2 nd row, pixel values of 1 st to 12 th pixel points in the 4 th row, …, and pixel values of 1 st to 12 th pixel points in the 20 th row.

Referring to fig. 2A, the LED lamp beads can control 4 pixels in two adjacent rows, and for the first LED lamp bead, the target position is 1, and 4 pixels corresponding to the target position 1 are 1, 2, 61, 62 (the 1 st and 2 nd pixels in the first row, and the 1 st and 2 nd pixels in the second row), so that the 1 st, 2 nd, 61 st, and 62 nd pixel values are selected from the data to be displayed. For the second LED lamp bead, the target position is 2, and 4 pixel points corresponding to the target position 2 are 3, 4, 63, and 64 (the 3 rd and 4 th pixel points in the first row, and the 3 rd and 4 th pixel points in the second row), so that the 3 rd, 4 th, 63, and 64 th pixel values are selected from the data to be displayed. …, for the seventh LED lamp bead, the target position is 7, and the 4 pixels corresponding to the target position 7 are 13, 14, 73, 74 (the 1 st and 2 nd pixels in the third row, and the 1 st and 2 nd pixels in the fourth row), so the 13 th, 14 th, 73 th, and 74 th pixel values are selected from the data to be displayed, and so on.

In the above embodiment, the pixel value may be an RGB value, that is, the pixel value of each pixel point among M pixel points controlled by the LED lamp bead may include an R value of the pixel point, a G value of the pixel point, and a B value of the pixel point. Based on this, to the pixel value of the 1 st pixel point of LED lamp pearl control, can include the R value of the 1 st pixel point, G value and B value, to the pixel value of the 2 nd pixel point of LED lamp pearl control, can include the R value of the 2 nd pixel point, G value and B value, and so on.

When the LED display screen displays the pixel value of a certain pixel point, the R value of the pixel point, the G value of the pixel point and the B value of the pixel point can be displayed, and the display sequence of the R value, the G value and the B value is not limited. The R value, the G value and the B value are combined into pixel values of pixel points, and the pixel values of all the pixel points form a picture.

It can be seen by above technical scheme, in this application embodiment, the sub-control circuit of LED display screen includes a plurality of LED lamp pearls, and a plurality of LED lamp pearls adopt the series connection mode to connect, and for every LED lamp pearl, after receiving the data of waiting to show, if this LED lamp pearl is not end LED lamp pearl, then will wait to show that data transmission gives the next LED lamp pearl that this LED lamp pearl is established ties. For each LED lamp bead, after receiving data to be displayed, the pixel values of M pixel points controlled by the LED lamp bead can be selected from the data to be displayed, and the pixel values can be displayed on the M pixel points controlled by the LED lamp bead, so that data display is realized. The main control chip transmits all pixel values of the sub-region corresponding to the sub-control circuit at one time, each LED lamp bead can display the pixel value of M pixel points, thereby adopting a static scanning mode to control the LED display screen, avoiding adopting a dynamic scanning mode to control the LED display screen, and being not required to carry out scanning logic control, thereby improving the display effect of the LED display screen, shortening the development period of the LED display screen, reducing the production cost of the LED display screen, avoiding the poor display effect (such as upper and lower ghost, the first line is dark, low grey is uneven, high contrast interference and the like), and solving the problems of large brightness loss and the like.

In the above embodiment, the LED lamp bead can be an LED lamp bead integrated with a lamp driver, that is, the driving circuit is integrated in the LED lamp bead, and the LED lamp bead and the driving circuit can be considered as one device.

In the above embodiment, a plurality of LED beads of the LED display screen may be separated by a small distance, that is, the distance between adjacent LED beads is smaller than a preset distance, such as 2.5mm, and of course, 2.5mm is only an example.

In a possible implementation manner, after the main control chip sends the control signal to the LED lamp beads, the main control chip may also send a full configuration parameter to the LED lamp beads connected to the main control chip, where the full configuration parameter is used to configure all the LED lamp beads of the sub-control circuit. Aiming at each LED lamp bead of the sub-control circuit, the LED lamp bead is used for receiving the full configuration parameters and configuring the LED lamp bead based on the full configuration parameters; and if the LED lamp bead is not the last LED lamp bead of the sub-control circuit, the full configuration parameters can be transmitted to the next LED lamp bead connected with the LED lamp bead in series.

For example, the main control chip sends the full configuration parameters to a first LED lamp bead, and the first LED lamp bead sends the full configuration parameters to a second LED lamp bead connected with the LED lamp bead in series, and so on.

Illustratively, the main control chip sends clock signal with fixed clock frequency, and every LED lamp pearl receives clock signal with fixed clock frequency. On this basis, the main control chip sends the full configuration parameter at the rising edge of each clock signal, and the LED lamp pearl receives the full configuration parameter at the rising edge of each clock signal. Or the master control chip sends the full configuration parameters on the falling edge of each clock signal, and the LED lamp beads receive the full configuration parameters on the falling edge of each clock signal. Or the master control chip sends the full configuration parameters on the rising edge and the falling edge of each clock signal, and the LED lamp beads receive the full configuration parameters on the rising edge and the falling edge of each clock signal.

Referring to fig. 4B, each LED lamp bead receives a clock signal at a fixed clock frequency and receives a data signal based on the clock signal, where the data signal may be a full configuration parameter. For example, after receiving a clock signal, the LED lamp bead determines a rising edge of the clock signal, and receives a data signal at the rising edge of the clock signal; or determining the falling edge of the clock signal, and receiving the data signal at the falling edge of the clock signal; alternatively, the rising and falling edges of the clock signal are determined, and the data signal is received at the rising and falling edges of the clock signal.

For example, for each LED lamp bead, after receiving the full configuration parameters, the LED lamp bead may be configured based on the full configuration parameters. For example, if the full configuration parameter is used to control the brightness adjustment mode, the brightness adjustment mode of the LED lamp bead is adjusted based on the full configuration parameter; if the full configuration parameters are used for controlling the chromaticity adjusting mode, adjusting the chromaticity adjusting mode of the LED lamp bead based on the full configuration parameters; if the full configuration parameter is used for controlling the sampling mode, the sampling mode of the LED lamp bead is adjusted based on the full configuration parameter (for example, the sampling mode is to receive the data signal on the rising edge of the clock signal, or receive the data signal on the falling edge of the clock signal, or receive the data signal on the rising edge and the falling edge of the clock signal). Of course, the above are only a few examples of the full configuration parameters, and the function of the full configuration parameters is not limited as long as the LED lamp beads can be configured based on the full configuration parameters.

In a possible implementation manner, after the main control chip sends the control signal to the LED lamp bead, the main control chip may also send the string parameter set to the LED lamp bead connected to the main control chip. For example, the string parameter set may include a plurality of string configuration parameters, the number of the string configuration parameters is the same as the number of the LED lamp beads of the sub-control circuit, the string configuration parameters correspond to the LED lamp beads one to one, and the string configuration parameters corresponding to each LED lamp bead of the sub-control circuit are only used for configuring the LED lamp beads.

Aiming at each LED lamp bead of the sub-control circuit, the LED lamp bead is used for receiving the string parameter set, selecting a string configuration parameter corresponding to the LED lamp bead from the string parameter set, and configuring the LED lamp bead based on the string configuration parameter; and if the LED lamp bead is not the last LED lamp bead of the sub-control circuit, the string parameter set can be transmitted to the next LED lamp bead connected with the LED lamp bead in series.

For example, the main control chip sends the string parameter set to a first LED lamp bead, and the first LED lamp bead sends the string parameter set to a second LED lamp bead connected in series with the first LED lamp bead, and so on.

Illustratively, the main control chip sends clock signal with fixed clock frequency, and every LED lamp pearl receives clock signal with fixed clock frequency. On the basis, the main control chip sends a string parameter set on the rising edge of each clock signal, and the LED lamp beads receive the string parameter set on the rising edge of each clock signal. Or the main control chip sends the string parameter set on the falling edge of each clock signal, and the LED lamp beads receive the string parameter set on the falling edge of each clock signal. Or the main control chip sends the string parameter sets on the rising edge and the falling edge of each clock signal, and the LED lamp beads receive the string parameter sets on the rising edge and the falling edge of each clock signal.

Referring to fig. 4B, each LED lamp bead receives a clock signal at a fixed clock frequency and receives a data signal based on the clock signal, where the data signal may be a set of string parameters. For example, the LED lamp bead may receive the data signal at a rising edge of the clock signal; alternatively, the data signal may be received on the falling edge of the clock signal; alternatively, the data signal may be received on both rising and falling edges of the clock signal.

For example, after receiving the string parameter set, the LED lamp bead may select a string configuration parameter corresponding to the LED lamp bead from the string parameter set, and configure the LED lamp bead based on the string configuration parameter.

For example, if the string of configuration parameters is used to control the light emitting angle, the LED lamp bead adjusts the light emitting angle of the LED lamp bead based on the string of configuration parameters; if the string of configuration parameters is used for controlling the display mode, the LED lamp beads adjust the display mode of the LED lamp beads based on the string of configuration parameters.

Of course, the above are only a few examples of the string configuration parameters, and the functions of the string configuration parameters are not limited as long as the LED lamp bead can be configured based on the string configuration parameters.

It should be noted that the string configuration parameters are different from the full configuration parameters in that: the full configuration parameters are used for configuring all the LED lamp beads, namely, all the LED lamp beads adopt the same full configuration parameters. The string configuration parameters are used for configuring a single LED lamp bead, namely each LED lamp bead has a corresponding string configuration parameter, the LED lamp beads correspond to the string configuration parameters one by one, and the string configuration parameters corresponding to different LED lamp beads can be the same or different.

For example, the LED lamp bead selects a string configuration parameter corresponding to the LED lamp bead from the string parameter set, which may include but is not limited to: and the LED lamp beads determine the target positions of the LED lamp beads in all the LED lamp beads of the sub-control circuit, and the string configuration parameters corresponding to the LED lamp beads are selected from the string parameter set based on the target positions. For example, for a first LED lamp bead, the target position is 1, and a first string configuration parameter corresponding to the target position 1 is selected from the string parameter set. And aiming at the second LED lamp bead, the target position is 2, and the second string configuration parameter corresponding to the target position 2 is selected from the string parameter set, and so on.

The above process is described below with reference to specific application scenarios. In this application scenario, the number of the LED lamp beads is 512, M is 4, and the LED lamp beads can control two adjacent rows of 4 pixel points.

Referring to table 1, data signals whose functions are shown in table 1 may be transmitted at a rising edge or a falling edge of a clock signal. Of course, these values of the data signals are merely examples, and in practical applications, the values of the data signals may vary. In the data signal, a 12-bit binary system is taken as an example, and of course, the data signal may have other bit numbers, and the length of the data signal is not limited.

TABLE 1

As can be seen from table 1, when data to be displayed needs to be transmitted, instruction 0 (i.e. the control signal of the above embodiment) is sent first, and then the full configuration parameters are sent, and taking 8 full configuration parameters as an example, the number of the full configuration parameters may be more or less. And then, sequentially sending the pixel value of the first pixel point and the pixel value of the second pixel point of each LED lamp bead. Then, an instruction 1 is sent, where the instruction 1 indicates that the string configuration parameter and the pixel values of the remaining two pixels need to be sent. And then, sequentially sending the string configuration parameters of each LED lamp bead. And then, sequentially sending the pixel value of the third pixel point and the pixel value of the fourth pixel point of each LED lamp bead.

Of course, the above manner is only an example, and the transmission process of the data signal is not limited.

In a possible implementation, taking 10Mhz as an example, and the pixel values include 3 colors (16 bits/color), assuming that 15% of protocol overhead (i.e., instruction 0, full configuration parameter, instruction 1 and string configuration parameter) is planned, and 85% of pixel values (e.g., R data, G data, and B data of each pixel), 2951 pixels may be provided for 10Mhz, each LED bead corresponds to 4 pixels, and each group of sub-control circuits may include 737 beads.

Based on the same application concept as the display screen, the embodiment of the application provides a data display method, wherein the display screen (such as an LED display screen) is divided into K sub-areas, the display screen comprises K groups of sub-control circuits, and the K groups of sub-control circuits correspond to the K sub-areas one by one; for each group of sub-control circuits, the sub-control circuit includes a main control chip and a plurality of light emitting modules (such as LED lamp beads), the plurality of light emitting modules are connected in series, each light emitting module is used to control M pixel points on a sub-region corresponding to the sub-control circuit, K and M are positive integers, as shown in fig. 5, the method is a schematic flow diagram of the method, and the method may include:

step 501, a main control chip sends a control signal for indicating video memory switching to a light-emitting module connected with the main control chip; aiming at each light-emitting module of the sub-control circuit, the light-emitting module receives the control signal, acquires a stored pixel value from a register of the light-emitting module, and displays the pixel value on M pixel points controlled by the light-emitting module; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the control signal to the next light-emitting module connected with the light-emitting module in series.

Step 502, the main control chip sends data to be displayed of a sub-region corresponding to the sub-control circuit to a light emitting module connected with the main control chip, wherein the data to be displayed comprises a pixel value of each pixel point on the sub-region; for each light-emitting module of the sub-control circuit, the light-emitting module receives the data to be displayed, selects pixel values of M pixel points controlled by the light-emitting module from the data to be displayed, and stores the selected pixel values into a register; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the data to be displayed to the next light-emitting module connected with the light-emitting module in series.

Exemplarily, after the main control chip sends the control signal to the light emitting module, the main control chip may also send a full configuration parameter to the light emitting module connected to the main control chip, where the full configuration parameter is used to configure all the light emitting modules of the sub-control circuit, receive the full configuration parameter for each light emitting module of the sub-control circuit, and configure the light emitting module based on the full configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the full configuration parameter to the next light-emitting module connected with the light-emitting module in series.

Exemplarily, after the main control chip sends the control signal to the light emitting modules, the main control chip may also send a string parameter set to the light emitting modules connected to the main control chip, where the string parameter set includes a plurality of string configuration parameters, the number of the string configuration parameters is the same as the number of the light emitting modules of the sub-control circuit, and the string configuration parameters correspond to the light emitting modules one to one; and aiming at the string configuration parameters corresponding to each light-emitting module of the sub-control circuit, the string configuration parameters are only used for configuring the light-emitting module. For each light-emitting module of the sub-control circuit, the light-emitting module receives the string parameter set, selects a string configuration parameter corresponding to the light-emitting module from the string parameter set, and configures the light-emitting module based on the string configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the string parameter set to the next light-emitting module connected with the light-emitting module in series.

In one possible implementation, the master control chip sends a clock signal at a fixed clock frequency; for each light emitting module of the sub-control circuit, the light emitting module receives a clock signal at a fixed clock frequency. Based on the method, the main control chip sends a control signal on the rising edge of each clock signal and sends data to be displayed on the rising edge of each clock signal; the light emitting module receives a control signal at the rising edge of each clock signal and receives data to be displayed at the rising edge of each clock signal; or the main control chip sends a control signal on the falling edge of each clock signal and sends data to be displayed on the falling edge of each clock signal; the light emitting module receives the control signal at a falling edge of each clock signal and receives the data to be displayed at a falling edge of each clock signal.

In a possible embodiment, the light emitting module selects the pixel values of M pixels controlled by the light emitting module from the data to be displayed, and the pixel values may include but are not limited to: the light emitting module determines the target position of the light emitting module in all light emitting modules of the sub-control circuit; and selecting the pixel values of M pixel points controlled by the light emitting module from the data to be displayed based on the target position.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. 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, embodiments of 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, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A data display method is characterized in that a display screen is divided into K sub-areas, the display screen comprises K groups of sub-control circuits, and the K groups of sub-control circuits correspond to the K sub-areas one by one; for each group of sub-control circuits, each sub-control circuit comprises a main control chip and a plurality of light-emitting modules, the light-emitting modules are connected in series, each light-emitting module is used for controlling M pixel points on a sub-region corresponding to the sub-control circuit, K and M are positive integers, and the method comprises the following steps:

2. The method of claim 1, wherein after the main control chip sends the control signal for instructing video memory switching to the light emitting module connected to the main control chip, the method further comprises:

the main control chip sends full configuration parameters to the light emitting modules connected with the main control chip, and the full configuration parameters are used for configuring all the light emitting modules of the sub-control circuit;

for each light emitting module of the sub-control circuit, the light emitting module receiving the full configuration parameter, configuring the light emitting module based on the full configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the full configuration parameter to the next light-emitting module connected with the light-emitting module in series.

3. The method of claim 1, wherein after the main control chip sends the control signal for instructing video memory switching to the light emitting module connected to the main control chip, the method further comprises:

4. The method according to any one of claims 1-3, further comprising:

the main control chip sends a clock signal at a fixed clock frequency; for each light emitting module of the sub-control circuit, the light emitting module receiving the clock signal at the fixed clock frequency;

the main control chip sends the control signal at the rising edge of each clock signal, and the light-emitting module receives the control signal at the rising edge of each clock signal;

the main control chip sends the data to be displayed on the rising edge of each clock signal, and the light-emitting module receives the data to be displayed on the rising edge of each clock signal;

or,

the main control chip sends the control signal at the falling edge of each clock signal, and the light-emitting module receives the control signal at the falling edge of each clock signal;

the main control chip sends the data to be displayed on the falling edge of each clock signal, and the light-emitting module receives the data to be displayed on the falling edge of each clock signal.

5. The method according to claim 1, wherein the lighting module selects pixel values of M pixels controlled by the lighting module from the data to be displayed, and comprises: the light-emitting module determines the target position of the light-emitting module in all light-emitting modules of the sub-control circuit; and selecting the pixel values of M pixel points controlled by the light-emitting module from the data to be displayed based on the target position.

6. A display screen is characterized in that the display screen is divided into K sub-areas, the display screen comprises K groups of sub-control circuits, and the K groups of sub-control circuits are in one-to-one correspondence with the K sub-areas; for each group of sub-control circuits, each sub-control circuit comprises a main control chip and a plurality of light-emitting modules, the light-emitting modules are connected in series, each light-emitting module is used for controlling M pixel points on the sub-region corresponding to the sub-control circuit, and K and M are positive integers, wherein:

7. The display screen of claim 6,

the main control chip is also used for sending full configuration parameters to the light emitting modules connected with the main control chip, and the full configuration parameters are used for configuring all the light emitting modules of the sub-control circuits;

the light-emitting module is further configured to receive the full configuration parameter, and configure the light-emitting module based on the full configuration parameter; and if the light-emitting module is not the last light-emitting module of the sub-control circuit, transmitting the full configuration parameter to the next light-emitting module connected with the light-emitting module in series.

8. The display screen of claim 6,

the main control chip is further used for sending a string parameter set to the light emitting modules connected with the main control chip, the string parameter set comprises a plurality of string configuration parameters, the number of the string configuration parameters is the same as that of the light emitting modules of the sub-control circuits, and the string configuration parameters correspond to the light emitting modules one to one; the string configuration parameters corresponding to each light-emitting module of the sub-control circuit are only used for configuring the light-emitting module;

the light emitting module is further configured to receive the string parameter set, select a string configuration parameter corresponding to the light emitting module from the string parameter set, and configure the light emitting module based on the string configuration parameter; and if the light emitting module is not the last light emitting module of the sub-control circuit, transmitting the string parameter set to the next light emitting module connected in series with the light emitting module.

9. A display screen according to any one of claims 6 to 8,

the main control chip is also used for sending a clock signal at a fixed clock frequency; the light emitting module is further used for receiving the clock signal at the fixed clock frequency;

the main control chip is further configured to send the control signal on a rising edge of each clock signal, and the light emitting module is further configured to receive the control signal on a rising edge of each clock signal;

the main control chip is further configured to send the data to be displayed on a rising edge of each clock signal, and the light emitting module is further configured to receive the data to be displayed on the rising edge of each clock signal;

or,

the main control chip is further configured to send the control signal on a falling edge of each clock signal, and the light emitting module is further configured to receive the control signal on a falling edge of each clock signal;

the main control chip is further configured to send the data to be displayed on a falling edge of each clock signal, and the light emitting module is further configured to receive the data to be displayed on a falling edge of each clock signal.

10. The display screen according to claim 6, wherein the light emitting module is specifically configured to, when selecting the pixel values of the M pixels controlled by the light emitting module from the data to be displayed: determining the target positions of the light-emitting module in all light-emitting modules of the sub-control circuit; and selecting the pixel values of M pixel points controlled by the light-emitting module from the data to be displayed based on the target position.