WO2020177237A1

WO2020177237A1 - Parameter configuration method, and display device and display apparatus using method

Info

Publication number: WO2020177237A1
Application number: PCT/CN2019/091729
Authority: WO
Inventors: 娄新磊; 雍尚刚
Original assignee: 北京集创北方科技股份有限公司
Priority date: 2019-03-04
Filing date: 2019-07-04
Publication date: 2020-09-10
Also published as: CN109947485A; KR102283722B1; CN109947485B; JP7449094B2; KR20200107776A; JP2022522545A

Abstract

The present disclosure relates to a parameter configuration method, and a display device and display apparatus using the method. The parameter configuration method is used for cascading multiple display devices, the method comprising: a display device at the first level receiving image data including configuration information provided by a host device via an image transmission channel; the display devices at all levels other than the first level display device respectively receiving the image data provided by the display devices at the previous levels; the display device at each level processing the received image data separately; and the display device at at least one level realizing parameter configuration according to the configuration information obtained by processing thereby, thereby reducing the manufacturing cost of the display apparatus, and the number and display status of each cascaded device can be changed by means of the host device.

Description

Parameter configuration method and display equipment and display device adopting the method

This application claims the priority of the Chinese patent application filed on March 4, 2019, with the application number 2019101603954 and the title of the invention "Parameter configuration method and display device and display device adopting the method", the entire content of which is incorporated by reference In this application.

Technical field

The present invention relates to the technical field of display control, in particular to a parameter configuration method and a display device and a display device adopting the method.

Background technique

With the development of display technology, people’s requirements for image quality are getting higher and higher. One of the important points is that the resolution of images is getting higher and higher. As the resolution increases, a single, independent display screen is used to display more The more difficult it is. Specifically, the higher the resolution of the image usually means that the display screen needs to have a larger size, which easily reduces the product yield of the display screen. Therefore, multiple display devices with low resolution are usually spliced and assembled together to form a display screen with high resolution.

The different connection sequence of the display devices will result in a different sequence of the display data that occurs to each display device. Therefore, when displaying text or images, the host device sending the text or image and each display device need to identify the connection sequence of each display device and the content that each display device needs to display, so that display errors will not occur.

Existing sequence identification or configuration of each display device usually requires an additional configuration module, which increases the manufacturing cost, and once the sequence between each display device is determined, it cannot be easily changed.

Summary of the invention

In view of this, the embodiment of the present invention provides a parameter configuration method and a display device and a display device using the method. The host device encrypts the configuration type into an image and then sends it to the cascaded display device, so that the display device can be configured according to the configuration type. Adjust the device number or device parameters.

According to the first aspect of the embodiments of the present invention, there is provided a parameter configuration method for multiple cascaded display devices. The parameter configuration method includes: in the first stage, the display device receives the information provided by the host device through the image transmission channel. Image data containing configuration information; the display devices of each level other than the display device of the first level receive image data provided by the display device of the previous level; the display device of each level receives the image Data is processed; and at least one level of the display device implements parameter configuration according to the configuration information obtained by its processing.

Preferably, before the step of separately processing the received image data by the display device at each level, the parameter configuration method further includes: in the display device at each level, detecting the image received this time Whether the data includes designated data, if it is, the display device of this level will process based on the image data it has received this time, if not, the display device of this level will reset to the initial state and wait for the next image data reception .

Preferably, for each level of the display device, the designated data is identifiable non-encrypted data.

Preferably, the image data provided by the image transmission channel includes multiple sets of row data corresponding to each row of pixel units, the designated data is located in the first set of the row data in the multiple sets of row data, and the configuration Information is located in the second set of row data in the plurality of sets of row data.

Preferably, the step of processing the received image data of the display device of each level includes: the display device of each level obtains information about the configuration type from the image data received by the display device, and the configuration type is at least Including the first configuration type or the second configuration type. If the configuration type obtained by the display device at this level is the first configuration type, the display device at this level will update the image data it receives and update it The subsequent image data is provided to the display device at the subsequent stage. If the configuration type obtained by the display device at the current level is the second configuration type, the display device at the current level transmits the received image data to the subsequent Level of the display device.

Preferably, if the configuration type obtained by the display device at the current level is the first configuration type, the display device at the current level updates the received image data and provides the updated image data to the subsequent level The steps of the display device include: in the display device of the current level, configuring the number information of the display device of the current level according to the received image data; generating the number information for the display device of the subsequent level; The number information of the display device of the second stage generates image data for providing to the display device of the subsequent stage.

Preferably, the step of generating image data for the display device of the subsequent stage according to the number information for the display device of the subsequent stage includes: encrypting the number information for the display device of the subsequent stage as a data packet to Obtain image data to be provided to the display device at a later stage.

Preferably, if the configuration type obtained by the display device at the current level is the second configuration type, transmitting the image data received by the display device at the current level to the display device at a later level further includes: determining the Whether the second configuration type matches the display device of the current level, and if so, configure the display state information of the display device of the current level according to the received image data.

According to a second aspect of the embodiments of the present invention, a display device is provided, including: a receiving module, configured to receive image data including configuration information provided by a host device or the display device in the previous stage through an image transmission channel; a processing module, It is used to process the received image data; and the configuration module is used to implement parameter configuration according to the configuration information obtained by the processing.

Preferably, the display device further includes: a detection module for detecting whether the image data received this time includes specified data, and if so, processing is performed based on the image data received this time, if not, Then reset the display device to the initial state, and wait for the next image data reception.

Preferably, the designated data is identifiable non-encrypted data.

Preferably, the processing module is configured to obtain information about the configuration type from the image data it receives, the configuration type at least including the first configuration type or the second configuration type.

Preferably, if the configuration type is the first configuration type, the configuration module configures the number information of the display device at the current level according to the received image data, generates number information for the display device at the subsequent level, and according to The number information of the display device of the second stage generates image data for providing to the display device of the subsequent stage.

Preferably, the configuration module encrypts the number information for the display device of the subsequent stage as a data packet to obtain image data for providing the display device of the subsequent stage.

Preferably, if the configuration type is the second configuration type, the configuration module determines whether the second configuration type matches the display device of the current level, and if so, configures the display device of the current level according to the received image data. Display the display status information of the device, and then transmit the received image data to the subsequent display device, if not, transmit the received image data to the subsequent display device.

According to a third aspect of the embodiments of the present invention, there is provided a display device including a display screen formed by connecting a plurality of the above-mentioned display devices in series.

The parameter configuration method of the embodiment of the present invention and the display device and display device adopting the method have the following beneficial effects:

The host device encrypts the configuration type into image data, and then sends it to the cascaded display device through the image transmission channel. The cascade device can obtain the configuration type by decrypting the image data, and then adjust the device number or device parameters according to the configuration type. Compared with the parameter configuration method of the prior art, the manufacturing cost of the display device is reduced, and the serial number and display state of each cascaded device can be changed through the host device; in addition, due to the video cycle transmission configuration parameter of the high-speed bus, the device configuration Is faster and more accurate.

According to the following detailed description of exemplary embodiments with reference to the accompanying drawings, other features and aspects of the present disclosure will become clear.

Description of the drawings

The drawings included in the specification and constituting a part of the specification together with the specification illustrate exemplary embodiments, features, and aspects of the present disclosure, and are used to explain the principle of the present disclosure.

Fig. 1 shows a schematic block diagram of a display device according to an embodiment of the present invention.

Fig. 2 shows a schematic flowchart of a parameter configuration method according to an embodiment of the present invention.

Fig. 3 shows a schematic block diagram of image transmission between a host device and a display device according to an embodiment of the present invention.

Fig. 4 shows a schematic block diagram of image transmission between a host device and a display device according to an embodiment of the present invention.

Fig. 5 shows a schematic block diagram of a display status information configuration according to an embodiment of the present invention.

Fig. 6 shows a schematic structural diagram of a display device according to an embodiment of the present invention.

detailed description

Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the drawings. The same reference numerals in the drawings indicate elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, unless otherwise noted, the drawings are not necessarily drawn to scale.

The dedicated word "exemplary" here means "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" need not be construed as being superior or better than other embodiments.

In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present disclosure can also be implemented without some specific details. In some instances, the methods, means, elements, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the gist of the present disclosure.

Fig. 1 shows a schematic block diagram of a display device according to an embodiment of the present invention. The display apparatus 100 includes a plurality of display devices arranged in an array (each display device is collectively labeled as a display device D below), and the plurality of display devices D are connected by physical cascade and/or logical cascade, for example , Each display device D is connected through an image transmission channel (as shown by the arrow line in the figure).

As a specific embodiment, as shown in FIG. 1, each display device D is cascaded in rows, and the host device 200 corresponds to each display device D to divide display data such as images, videos, etc. according to the level of each display device D. The associative sequence sorts the divided display data for display by the corresponding display device D. Hereinafter, display devices D0 to D8 (first-level display devices to ninth-level display devices) arranged in a 3×3 array and cascaded are used as specific embodiments of multiple display devices D to facilitate the implementation of the embodiments of the present invention. specific description.

Each display device D can be implemented by a device with display function as required, such as but not limited to cathode ray tube (CRT), digital light processing (DLP), liquid crystal display (LCD) ), light emitting diode (LED), organic light emitting diode (organic light emitting diode, OLED), quantum dot light emitting diode (QLED), MircoLED, MiniLED, and other types of display devices.

In this embodiment, each display device D may be the same, for example, may have the same structure, the same configuration, the same application, and so on. Of course, the embodiments of the present invention are not limited to this, and each display device may be different or at least partially different, for example, display devices with different structures, configuration applications, etc. may be selected as required. In use, the positions of the display devices in different positions can be adjusted arbitrarily, and normal display can still be achieved.

Although a 3×3 array is used as an example for description in FIG. 1, those skilled in the art should understand that the structure of the display device in the embodiment of the present invention is not limited to this, and the number of display devices, array arrangement method, grouping method, and connection topology can be based on Need to change arbitrarily, of course the corresponding data division will also change.

2 and 3 are respectively a flowchart of a parameter configuration method and a schematic block diagram of image transmission between a host device and a display device according to an embodiment of the present invention. For the convenience of description, the display device D0 and the display device D1 are taken as an example for description in FIG. 3. The parameter configuration method of the embodiment of the present invention will be described in detail below with reference to FIGS. 2 and 3.

The parameter configuration method is used for the host device to configure the parameters of multiple cascaded display devices, and the parameter configuration method is executed in each of the display devices. As shown in Figure 2, the parameter configuration method specifically includes the following steps.

In step S101, at least one image data containing configuration information is received through the image transmission channel.

In this embodiment, the first-level display device receives image data containing configuration information provided by the host device through the image transmission channel, and all levels of display devices other than the first-level display device receive image data provided by the previous-level display device. .

3, the host device 200 encapsulates the configuration information into a data packet, and encrypts the data packet according to a preset encryption algorithm to form an image or video in a specific order, and then sends it to the display device D0 through the image transmission channel. For example, the host device 200 encapsulates the configuration information into a 512-bit data packet, then uses SHA-256 encryption to generate a 256-bit hash value, and then converts the data packet and hash value into an image or video, and transmits according to a preset The protocol is sent to the display device D0 through the video cycle of the high-speed bus.

Examples of transmission protocols include, but are not limited to, current or future video/audio transmission protocols, such as Video Graphics Array (VGA), Digital Visual Interface (DVI), High Definition Multimedia Interface, HDMI), Display Port (DP), V-by-one, etc.

In addition, SHA (Secure Hash Algorithm) is a family of cryptographic hash functions, a secure hash algorithm certified by FIPS, and a fixed-length string that can be calculated for a digital message ( Also known as message digest) algorithms, including SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512.

It should be noted that the security encryption method in the embodiment of the present invention is not limited to the foregoing embodiment, and those skilled in the art can select an appropriate encryption algorithm according to the specific situation.

In step S102, each level of display device processes the received image data separately to obtain configuration information. For example, each level of display device can decrypt and analyze the image data it receives to obtain the configuration information in the image data.

In step S103, the at least one-level display device implements parameter configuration according to the configuration information obtained by its processing.

Further, the parameter configuration method further includes, in the display device of each level, detecting whether the image data received this time includes specified data, and if so, the display device of the current level will be based on its current reception If not, the display device at this level is reset to the initial state and waits for the next image data reception.

In this embodiment, the host device 200 sends identifiable non-encrypted data via an image transmission channel, and the channel is named blind channel at this time. Each level of display device D needs to monitor the blind channel at all times before decrypting the received image data. When it is detected in the blind channel that the image data received this time includes designated data, the display device D and the host device 200 match each other, and the display device D will process based on the image data received this time; if not, then The display device D is reset to the initial state and waits for the next image data reception. In addition, when matching between the display device D and the host device 200, the display device D and the host device 200 will always maintain a matching state after a blind track match. If any mismatch occurs later, the display device D will It will terminate the match, and then wait for the next blind track match.

After the display device D of each level passes the blind track matching, SHA-256 decryption is performed on the received image to obtain configuration type information from the image data. If the decryption is successful and the configuration type is found to match the display device D, the configuration type is parsed to obtain the parameters in the data packet, and the configuration of the display device is completed based on these parameters.

In this embodiment, the image data provided by the image transmission channel includes multiple sets of row data corresponding to each row of pixel units, the designated data is located in the first set of row data in the multiple sets of row data, and the configuration information is located in all rows. The second set of row data in the plurality of sets of row data.

In addition, the configuration type includes at least a first configuration type (for example, a configuration of a numbered type) or a second configuration type (for example, a configuration of a display state). If the configuration type obtained by the display device D at this level is the first configuration type, then The display device D of the current level updates the image data it receives and provides the updated image data to the subsequent display device; if the configuration type obtained by the display device D of the current level is the second configuration type, the current level The display device D transmits the received image data to the subsequent display device D.

4 and 5 respectively show schematic block diagrams of number type configuration and display state information configuration according to an embodiment of the present invention. Similarly, for convenience of description, the display device D0 and the display device D1 are taken as examples for description in FIGS. 4 and 5.

For the configuration of the number type, the display device of the current level first prevents the current image from being transmitted to the subsequent display device, and then performs blind track detection on the received image data. If the blind track matches, the image data is decrypted, and the current image is checked according to the configuration type in the image data. The secondary display device is numbered, and a new number for the subsequent display device is generated at the same time, and new image data is obtained according to the new number, and then the new image data is transmitted to the subsequent display device.

As shown in FIG. 4, the display device D0 receives the image data provided by the host device and prevents the current image data from continuing to be transmitted to the display device D1, then performs blind track detection on the image data, and decrypts the image data if the blind track matching succeeds. If the blind track matching is successful and the image data decryption is successful, the display device D0 obtains the configuration type in the image data. Then, according to the number in the configuration type, the display device of the current level (ie, display device D0) is numbered, and a new number corresponding to the display device of the subsequent level (ie, display device D1) is generated. Then encapsulate the new number and encrypt it with a preset encryption algorithm to form new image data, and transmit the new image data to the display device D1. The display device D1 repeats the above steps to configure the number of the display device at this level .

For the configuration of the display status information, each level of display device needs to transmit the image data containing the configuration type to the subsequent display device to ensure that the image data containing the configuration type will not be lost.

As shown in FIG. 5, the display device D0 receives the image data provided by the host device, then performs blind track detection on the image data, and decrypts the image data if the blind track matches. If the blind track matching is successful and the image data decryption is successful, the display device D0 obtains the configuration type in the image data. Among them, the blind track matching and image decryption methods are the same as the embodiment shown in FIG. 4. Then the display device D0 judges whether the configuration type matches the display device of this level. If the matching is successful, the display status information of the display device at this level is configured according to the received image data (ie configuration matching), and then the image data is transferred to the display device D1; if the matching is not successful, the display device D0 directly The image data is transferred to the display device D1, and the display device D1 repeats the above steps to configure the display device of the current level to display status information.

Fig. 6 shows a structural diagram of a display device according to an embodiment of the present invention. The device shown in FIG. 6 is only an example, and should not constitute any limitation on the function and scope of use of the embodiment of the present invention.

Referring to FIG. 6, the display device D includes a receiving module 111, a detecting module 112, a processing module 113 and a configuration module 114.

The receiving module 111 is configured to receive image data including configuration information provided by the host device or the display device described in the previous stage through the image transmission channel.

Wherein, the display device of the first level receives the image data provided by the host device through the image transmission channel, and other display devices after the first level receive the image data provided by the display device of the previous level through the image transmission channel.

In this embodiment, the host device encapsulates the configuration information into a data packet, and encrypts the data packet according to a preset encryption algorithm to form an image or video in a specific order, and then sends it to the display device D through the image transmission channel. For example, the host device encapsulates the configuration information into a 512-bit data packet, then uses SHA-256 encryption to generate a 256-bit hash value, and then converts the data packet and hash value into an image or video, according to a preset transmission protocol The video cycle through the high-speed bus is sent to the display device D.

The detection module 112 is used to detect whether the image data received this time includes specified data, and if so, it will process based on the image data received this time; if not, reset the display device to the initial state, And wait for the next image data reception.

In this embodiment, the host device sends identifiable non-encrypted data via an image transmission channel, and the channel is named blind channel at this time. Each level of display device D needs to monitor the blind channel at all times before decrypting the received image data. When it is detected in the blind track that the image data received this time includes specified data, the display device D will process based on the image data received this time; if the specified data is not detected, the display device D D reset to the initial state, and wait for the next image data reception.

The processing module 113 is used to decrypt the received image data. After the display device D passes the blind track matching, SHA-256 decryption is performed on the received image to obtain information about the configuration type. If the decryption is successful and the configuration type is found to match the display device D, the configuration type is parsed to obtain the parameters in the data packet, and the configuration of the display device is completed based on these parameters.

In addition, the image data provided by the image transmission channel includes multiple sets of row data corresponding to each row of pixel units, the designated data is located in the first set of row data in the multiple sets of row data, and the configuration information is located in the multiple sets of row data. The second set of data in the row of data.

The configuration module 114 is configured to implement parameter configuration according to the configuration information obtained by decryption. Wherein, the configuration type includes at least a first configuration type (for example, the configuration of the device number) or a second configuration type (for example, the configuration of the device to display status information).

For example, for the configuration of the numbering type, the configuration module 114 first prevents the current image data from being transmitted to the subsequent display device D, and then decrypts the image data. If the decryption is successful, the current display device is numbered according to the number in the configuration type. , At the same time, generate a new number corresponding to the display device D of the subsequent stage, and then encapsulate the new configuration parameters, and encrypt it through a preset encryption algorithm to form new image data, and then transmit the new image data to the subsequent display Device D.

For the configuration of the display status information, the configuration module 114 first prevents the current image data from continuing to be transmitted to the display device D of the subsequent stage, and then decrypts the image data. If the decryption is successful, it determines whether the configuration type matches the display device D of the current stage. If it matches, configure the display status information of the display device at this level according to the received image data, and then transfer the image data to the subsequent display device; if it does not match, the display device at this level directly transfers the image data to Post-level display equipment.

In summary, in the parameter configuration method of the embodiment of the present invention and the display device and display device adopting the method, the host device encrypts the configuration type into image data, and then sends it to the cascaded display device through the image transmission channel. The configuration type can be obtained by decrypting the image data, and then the device number or device parameters can be adjusted according to the configuration type. Compared with the parameter configuration method of the prior art, the manufacturing cost of the display device is reduced, and the serial number and display state of each cascaded device can be changed through the host device; in addition, due to the video cycle transmission configuration parameter of the high-speed bus, the device configuration Is faster and more accurate.

The flowcharts and block diagrams in the accompanying drawings show the possible implementation architecture, functions, and operations of the system, method, and computer program product according to multiple embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, program segment, or part of an instruction, and the module, program segment, or part of an instruction contains one or more functions for implementing the specified logical function. Executable instructions. In some alternative implementations, the functions marked in the block may also occur in a different order from the order marked in the drawings. For example, two consecutive blocks can actually be executed in parallel, or they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and/or flowchart, and the combination of the blocks in the block diagram and/or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions Or it can be realized by a combination of dedicated hardware and computer instructions.

The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art. The choice of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the market of the embodiments, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

A parameter configuration method for multiple cascaded display devices, characterized in that the parameter configuration method includes:

The display device at the first stage receives image data including configuration information provided by the host device through an image transmission channel;

The display devices at all levels other than the display devices at the first level respectively receive image data provided by the display devices at the previous level;

The display device at each level processes the received image data separately; and

At least one level of the display device implements parameter configuration according to the configuration information obtained by its processing.
The parameter configuration method according to claim 1, wherein, before the step of processing the received image data by the display device at each level, the parameter configuration method further comprises:

In the display device of each level, detecting whether the image data received this time includes designated data,

If yes, the display device at this level will process based on the image data it has received this time,

If not, the display device at this level is reset to the initial state and waits for the next image data reception.
The parameter configuration method according to claim 2, wherein, for each level of the display device, the designated data is identifiable non-encrypted data.
The parameter configuration method according to claim 2, wherein the image data provided by the image transmission channel includes multiple sets of row data corresponding to each row of pixel units, and the designated data is located in the first of the multiple sets of row data. In the group of row data, the configuration information is located in the second group of row data in the plurality of groups of row data.
The parameter configuration method according to claim 1, wherein the step of processing the received image data by the display device at each level comprises:

The display device at each level obtains information about the configuration type from the image data it receives, and the configuration type includes at least a first configuration type or a second configuration type,

If the configuration type obtained by the display device at the current level is the first configuration type, the display device at the current level updates the image data it receives and provides the updated image data to the display at the subsequent level. equipment,

If the configuration type obtained by the display device at the current level is the second configuration type, the display device at the current level transmits the received image data to the display device at the subsequent level.
The parameter configuration method according to claim 5, wherein if the configuration type obtained by the display device at the current level is the first configuration type, the display device at the current level updates the image data it receives, and The step of providing the updated image data to the display device at a later stage includes:

In the display device of the current level, configure the number information of the display device of the current level according to the received image data;

Generate number information for the display device at the later stage; and

The image data to be provided to the display device of the subsequent stage is generated according to the number information for the display device of the subsequent stage.
The parameter configuration method according to claim 6, wherein the step of generating image data for the display device of the subsequent stage according to the number information for the display device of the subsequent stage comprises:

Encrypting the number information for the display device of the subsequent stage as a data packet to obtain image data for providing to the display device of the subsequent stage.
The parameter configuration method according to claim 5, wherein if the configuration type obtained by the display device at the current level is the second configuration type, the display device at the current level transmits the image data it receives to the subsequent level The display device also includes:

It is determined whether the second configuration type matches the display device of this level, and if so, the display state information of the display device of this level is configured according to the received image data.
A display device including:

The receiving module is configured to receive image data including configuration information provided by the host device or the display device of the previous stage through the image transmission channel;

The processing module is used to process the received image data; and

The configuration module is used to implement parameter configuration according to the configuration information obtained by its processing.
The display device according to claim 9, further comprising:

The detection module is used to detect whether the image data received this time includes specified data,

If it is, it will be processed based on the image data received this time,

If not, reset the display device to the initial state and wait for the next image data reception.
The display device according to claim 10, wherein the designated data is identifiable non-encrypted data.
The display device according to claim 10, wherein the image data provided by the image transmission channel includes multiple sets of row data corresponding to each row of pixel units, and the specified data is located in the first set of the multiple sets of row data. In the row data, the configuration information is located in the second set of row data in the plurality of sets of row data.
9. The display device according to claim 9, wherein the processing module is configured to obtain information about a configuration type from the image data it receives, the configuration type at least including a first configuration type or a second configuration type.
The display device according to claim 13, wherein if the configuration type is the first configuration type, the configuration module configures the number information of the display device at the current level according to the received image data, and generates the The number information of the display device generates image data to be provided to the display device of the subsequent stage according to the number information of the display device of the subsequent stage.
14. The display device according to claim 14, wherein the configuration module encrypts the number information for the display device of the subsequent stage as a data packet to obtain image data for providing to the display device of the subsequent stage.
The display device according to claim 13, wherein if the configuration type is a second configuration type, the configuration module determines whether the second configuration type matches the display device of the current level,

If yes, configure the display status information of the display device at the current level according to the received image data, and then transmit the received image data to the display device at the subsequent level,

If not, the received image data is transmitted to the display device at the subsequent stage.
A display device, characterized by comprising a plurality of display screens formed by cascading the display devices according to any one of claims 9-16.