Display screen control system and display screen

Abstract

The application relates to a display screen control system and a display screen, the system comprising a sending card, N+1 receiving card groups and N distribution cards, wherein N is a positive integer; the sending card comprises a first data interface and a second data interface; the N distribution cards are connected in sequence in cascade, and a first-stage distribution card is connected with the first data interface of the sending card; a first receiving card group is connected with the second data interface of the sending card; and the remaining N receiving card groups are connected with the N distribution cards in one-to-one correspondence. In the system, the distribution cards are connected in cascade with the sending card in a specific mode, the number of the interfaces of the sending card is reduced, wiring is simpler, and the installation complexity and difficulty are reduced. Further, the distribution cards are connected in sequence in cascade to form an orderly link, transmission confusion and interference caused by complex wiring are avoided, signal attenuation and noise are reduced, data is stably and accurately transmitted, and the system stability is enhanced.

Description

Technical Field

[0001] This application relates to the field of display screen technology, and in particular to a display screen control system and a display screen. Background Technology

[0002] In the field of display screen control, with the rapid development of display technology, the requirements for display screen control systems are also increasing. Existing display screen control systems typically use a sending card that connects to multiple receiving cards via multiple interfaces to send image data to the receiving cards, thereby achieving effective control of large-screen or complex-layout displays. However, too many interfaces lead to complex wiring methods, greatly increasing the difficulty of installing the sending card. Summary of the Invention

[0003] Based on this, the purpose of this application is to provide a display screen control system and display screen that can reduce wiring complexity and reduce the installation difficulty of the sending card.

[0004] The display screen control system of this application embodiment includes a sending card, N+1 receiving card groups and N distribution cards, where N is a positive integer;

[0005] The sending card includes a first data interface and a second data interface; N distribution cards are cascaded in sequence, and the first-level distribution card is connected to the first data interface of the sending card;

[0006] The first receiving card group is connected to the second data interface of the sending card; the remaining N receiving card groups are connected to the N distribution cards one by one.

[0007] In this embodiment of the display screen control system, the distribution cards are cascaded and connected to the sending cards in a specific manner, reducing the number of sending card interfaces, simplifying wiring, and lowering installation complexity and difficulty. Furthermore, the cascading distribution cards form an ordered link, avoiding transmission chaos and interference caused by complex wiring, reducing signal attenuation and noise, ensuring stable and accurate data transmission, and enhancing system stability. Moreover, the architecture of the display screen control system allows for easy control of larger-scale or more complex display screens by simply increasing the number of distribution and receiving card groups and connecting them according to rules, without requiring large-scale modifications to the sending card interfaces, thus adapting to different scale requirements. Furthermore, in this embodiment, the sending card can directly connect to some of the receiving card groups, sending specified image data to the receiving card groups, alleviating the data transmission pressure on the distribution cards, reducing the use of distribution cards, and lowering overall costs.

[0008] In one embodiment, each receiving card group includes multiple cascaded receiving cards; the first-level receiving card of the first receiving card group is connected to the second data output port of the sending card; the first-level receiving cards of the remaining N receiving card groups are respectively connected to the N distribution cards one-to-one.

[0009] This embodiment achieves accurate distribution of image data through multiple distribution cards. At the same time, the sending card can directly send the specified image data to the receiving card group by directly connecting to some of the receiving card groups, thus relieving the data transmission pressure of the distribution cards.

[0010] In one embodiment, the sending card includes a SOC chip and an FPGA chip; the SOC chip includes a data transmission terminal, and the FPGA chip includes a data receiving terminal, a first signal interface, and a second signal interface; the data transmission terminal of the SOC chip is connected to the data receiving terminal of the FPGA chip; the SOC chip is used to transmit image data to the FPGA chip; the first signal interface and the second signal interface of the SOC chip are respectively the first data interface and the second data interface of the sending card; the FPGA chip receives the image data and outputs the processed image data to the first-level allocation card and the first receiving card group through the first data interface and the second data interface, respectively.

[0011] This embodiment leverages the advantages of both SOC and FPGA chips. The SOC chip is responsible for generating and initially processing image data, while the FPGA chip is responsible for further processing and data distribution, thereby improving the efficiency and flexibility of data processing. At the same time, it enables data transmission between the sending card, the distribution card, and the receiving card group.

[0012] In one embodiment, the FPGA chip receives a status feedback signal from the first-level allocation card through the first signal interface and adjusts the output parameters of the image data of the first signal interface; and / or, the FPGA chip receives a status feedback signal from the first receiving card group through the second signal interface and adjusts the output parameters of the image data of the second signal interface.

[0013] In this embodiment, the PGA chip of the transmitting card can interact with the first-level allocation card and the first receiving card group and adaptively adjust the output parameters of the image data, thereby enhancing the stability of the display screen control system.

[0014] In one embodiment, the first data output port of the sending card sends a first number of pairs of LVDS signal data groups to the first-level distribution card; the first-level distribution card then sequentially transmits the LVDS signal data groups to the next-level distribution card.

[0015] The second data output port of the transmitting card sends a second number of LVDS signal data groups to the first receiving card group; wherein the first number of pairs is greater than the second number of pairs.

[0016] In this embodiment, the allocation card link distributes data to multiple receiving card groups. In addition, the first receiving card group, which is connected to the second data output port of the sending card, directly receives specific data from the sending card, thus rationally allocating data transmission resources and realizing the rational allocation of data from different receiving cards.

[0017] In one embodiment, each level of the allocation card decodes the first number of LVDS data groups it receives, extracts a second number of LVDS data groups, transmits the extracted second number of LVDS data groups to the corresponding receiving card group, and passes the remaining LVDS data groups through to the next level of the allocation card.

[0018] In this embodiment, the allocation card performs local decoding to obtain the local data group, and then transmits the remaining data group to the next level allocation card, thus realizing that the data can be accurately allocated to the corresponding receiving card group on the allocation card link.

[0019] In one embodiment, each of the receiving card groups is connected to a corresponding display screen light panel; the receiving card group outputs the image data sent by the distribution card or the sending card to the corresponding display screen light panel.

[0020] In this embodiment, each receiving card group is connected to the corresponding display screen light board, realizing a complete data transmission and control process from the sending card to the final display unit.

[0021] In one embodiment, the sending card sends a pseudo-random code to the first-level allocation card through a first data output port, and sends a pseudo-random code to the first receiving card group through a second data output port;

[0022] The distribution card receives the pseudo-random code sent by the sending card or the pseudo-random code transmitted by the upper-level distribution card, and determines the center phase of the signal eye diagram based on the pseudo-random code under different sampling clock phases; adjusts the local sampling clock according to the center phase of the signal eye diagram, and performs data sampling on the signal sent by the sending card or the upper-level distribution card based on the adjusted local sampling clock.

[0023] The receiving card group receives the pseudo-random code sent by the sending card or the distribution card, determines the center phase of the signal eye diagram based on the pseudo-random code under different sampling clock phases, adjusts the local sampling clock based on the center phase of the signal eye diagram, and samples the signal sent by the sending card or the distribution card based on the adjusted local sampling clock.

[0024] This embodiment uses an adaptive calibration mechanism to enable the distribution card and receiver card group to adaptively adjust the sampling clock, optimize the transmission quality of LVDS signals, and reduce the data transmission error rate.

[0025] The display screen of this application embodiment includes a screen body and the display screen control system of the above embodiment; the screen body is connected to the N+1 receiving card groups.

[0026] In this embodiment, the distribution cards are cascaded and connected to the sending cards in a specific manner, reducing the number of sending card interfaces, simplifying wiring, and lowering installation complexity and difficulty. Furthermore, the cascaded distribution cards form an ordered link, avoiding transmission chaos and interference caused by complex wiring, reducing signal attenuation and noise, ensuring stable and accurate data transmission, and enhancing system stability. Moreover, the architecture of the display control system allows for easy control of larger-scale or more complex display screens by simply increasing the number of distribution and receiving card groups and connecting them according to rules, without requiring large-scale modifications to the sending card interfaces, thus adapting to different scale requirements. The connection between the screen body and the receiving card group of the display system enables the display control system to control the screen body.

[0027] In one embodiment, the display screen further includes N+1 receiving card boxes, where N is a positive integer; the first receiving card group and the sending card are disposed in the first receiving card box, and the remaining N receiving card groups and the corresponding N distributing cards are disposed in the remaining N receiving card boxes respectively.

[0028] In this embodiment, the first receiving card group and the sending card are centrally located in the first receiving card cabinet, while the remaining receiving card groups and their corresponding distribution cards are placed in other receiving card cabinets. This modular design makes the functions of each part relatively independent. During installation, different cabinets can be operated independently, reducing installation complexity; during maintenance, if a problem occurs in a certain cabinet, only that cabinet needs to be repaired, without the need for large-scale disassembly of the entire display screen, improving maintenance efficiency and reducing maintenance costs and time.

[0029] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a display screen control system in the prior art;

[0031] Figure 2 This is a schematic diagram of the display screen control system according to an embodiment of this application;

[0032] Figure 3 This is a more detailed structural diagram of the display screen control system according to an embodiment of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. Wherein, when the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] It should be understood that the embodiments described below do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0035] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, in the description of this application, unless otherwise stated, “a plurality” means two or more. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items, for example, A and / or B, which can represent: A alone, A and B together, and B alone; the character “ / ” generally indicates that the preceding and following objects are in an “or” relationship.

[0036] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, this information should not be limited to these terms, and these terms are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Depending on the context, the word "if" as used in this application can be interpreted as "when," "when," or "in response to determination."

[0037] In the field of display screen control, with the rapid development of display technology, the requirements for display screen control systems are also increasing. Please refer to... Figure 1 Existing display screen control systems typically employ a method where a transmitting card connects to multiple receiving cards via multiple interfaces, sending image data to the receiving cards to achieve effective control of large or complex display screen layouts. However, the excessive number of interfaces leads to complex wiring methods, significantly increasing the difficulty of installing the transmitting card.

[0038] In response, this application provides a display screen control system in which distribution cards are cascaded and connected to sending cards in a specific manner, reducing the number of interfaces on the sending cards, simplifying wiring, and lowering installation complexity and difficulty.

[0039] Please refer to Figure 2 The display screen control system of this application embodiment includes a sending card 101, N+1 receiving card groups 102 and N distribution cards 103, where N is a positive integer.

[0040] The sending card 101 includes a first data interface and a second data interface; N distribution cards 103 are cascaded in sequence, and the first-level distribution card 103 is connected to the first data interface of the sending card 101.

[0041] The first receiving card group 102 is connected to the second data interface of the sending card 101; the remaining N receiving card groups 102 are connected to the N distribution cards 103 one by one.

[0042] Among them, the sending card 101 is the core component of the display screen control system, responsible for generating and sending image data.

[0043] The receiving card group 102 is a collection of components that receive image data and control the display of corresponding parts of the display screen. One receiving card group 102 may contain multiple receiving cards.

[0044] The distribution card 103 is used to forward image data from the sending card 101 to the receiving card group 102, thereby realizing the data distribution function.

[0045] Cascading refers to multiple components being connected end-to-end in sequence to form a data transmission chain, where the preceding component transmits data to the following component. Specifically, in this embodiment, multiple distribution cards 103 are connected end-to-end in sequence, with the preceding distribution card 103 transmitting data to the following component.

[0046] The first data interface and the second data interface are interfaces on the sending card 101 used for data transmission, connecting the distribution card 103 and the receiving card group 102, respectively. In this embodiment, the first data interface and the second data interface can be LVDS interfaces. LVDS (Low Voltage Differential Signaling) is a high-speed, low-power digital transmission technology. Accordingly, in this embodiment, shielded cables based on LVDS can be used to connect the sending card, the distribution card, and the receiving card group to reduce interference during signal transmission. In other embodiments, the first data interface and the second data interface can be other types of interfaces, such as DVI interfaces, with the specific interface type determined according to the design.

[0047] In this embodiment of the display screen control system, the distribution cards are cascaded and connected to the sending cards in a specific manner, reducing the number of sending card interfaces, simplifying wiring, and lowering installation complexity and difficulty. Furthermore, the cascading distribution cards form an ordered link, avoiding transmission chaos and interference caused by complex wiring, reducing signal attenuation and noise, ensuring stable and accurate data transmission, and enhancing system stability. Moreover, the architecture of the display screen control system allows for easy control of larger-scale or more complex display screens by simply increasing the number of distribution and receiving card groups and connecting them according to rules, without requiring large-scale modifications to the sending card interfaces, thus adapting to different scale requirements. Furthermore, in this embodiment, the sending card can directly connect to some of the receiving card groups, sending specified image data to the receiving card groups, alleviating the data transmission pressure on the distribution cards, reducing the use of distribution cards, and lowering overall costs.

[0048] Please refer to Figure 3 In one embodiment, each receiving card group 102 includes multiple cascaded receiving cards; the first-level receiving card of the first receiving card group 102 is connected to the second data output port of the sending card 101; the first-level receiving cards of the remaining N receiving card groups 102 are respectively connected to N distribution cards 103 one by one.

[0049] In this embodiment, each receiving card group 102 consists of multiple cascaded receiving cards. Specifically, the first-level receiving card of the first receiving card group 102 is directly connected to the second data output port of the transmitting card 101, and directly obtains image data and instructions from the transmitting card 101; while the first-level receiving cards of the remaining N receiving card groups 102 are respectively connected to N distribution cards 103 one-to-one, and indirectly obtain data and instructions from the transmitting card 101 through the distribution cards 103.

[0050] This embodiment achieves accurate distribution of image data through multiple distribution cards. At the same time, the sending card can directly send the specified image data to the receiving card group by directly connecting to some of the receiving card groups, thus relieving the data transmission pressure of the distribution cards.

[0051] In one embodiment, the transmitting card 101 includes a SOC chip and an FPGA chip; the SOC chip includes a data transmission end, and the FPGA chip includes a data receiving end, a first signal interface, and a second signal interface; the data transmission end of the SOC chip is connected to the data receiving end of the FPGA chip; the SOC chip is used to transmit image data to the FPGA chip; the first signal interface and the second signal interface of the SOC chip are respectively the first data interface and the second data interface of the transmitting card 101; the FPGA chip receives the image data and outputs the processed image data to the first-level allocation card 103 and the first receiving card group 102 through the first data interface and the second data interface, respectively.

[0052] The SOC chip, or System on a Chip, integrates multiple functional modules, such as a processor, memory controller, and peripheral interfaces. In this embodiment, it is responsible for generating and initially processing image data and outputting it through a data transmission terminal.

[0053] An FPGA chip, or Field Programmable Gate Array, can be programmed and configured according to user needs to implement specific logic functions. In this embodiment, it has a data receiving end, a first signal interface, and a second signal interface, used to receive image data from the SOC chip, process it, and then output it.

[0054] The data transmission port is a port on the SOC chip used to transmit internally processed image data to the outside.

[0055] The data receiver is a port on the FPGA chip used to receive data from external devices (such as SOC chips).

[0056] The first signal interface and the second signal interface are two signal interfaces on the FPGA chip, which serve as the first data interface and the second data interface of the transmitting card 101, respectively, for data communication with external devices (distribution card 103 and receiving card group 102).

[0057] In this embodiment, the transmitting card 101 consists of a SOC chip and an FPGA chip. The data transmission end of the SOC chip is connected to the data receiving end of the FPGA chip, and the SOC chip transmits the generated image data to the FPGA chip. After receiving the image data, the FPGA chip processes it, and then uses its first signal interface (corresponding to the first data interface of the transmitting card 101) to output a portion of the processed image data to the first-level allocation card 103, and uses its second signal interface (corresponding to the second data interface of the transmitting card 101) to output another portion of the processed image data to the first receiving card group 102.

[0058] This solution leverages the advantages of both SOC and FPGA chips. The SOC chip is responsible for generating and initially processing image data, while the FPGA chip is responsible for further processing and data distribution, thereby improving the efficiency and flexibility of data processing. At the same time, it enables data transmission between the sending card 101, the distribution card 103, and the receiving card group 102.

[0059] In one embodiment, the FPGA chip receives a status feedback signal from the first-level allocation card 103 through a first signal interface and adjusts the output parameters of the image data of the first signal interface; and / or, the FPGA chip receives a status feedback signal from the first receiving card group 102 through a second signal interface and adjusts the output parameters of the image data of the second signal interface.

[0060] In this embodiment, the FPGA chip has the function of interacting with and adaptively adjusting to external devices. Specifically, the FPGA chip can interact and adaptively adjust with the first-level distribution card 103 and the first receiving card group 102. Through its first signal interface, the FPGA chip can not only output image data to the first-level distribution card 103, but also receive status feedback signals from the first-level distribution card 103. Based on these feedback signals, the FPGA chip can analyze the working status and data reception of the first-level distribution card 103, and then dynamically adjust the parameters of the image data output from the first signal interface, such as adjusting the data transmission rate, data format, and data volume, to ensure the stability and efficiency of data transmission and adapt to the working requirements of the first-level distribution card 103.

[0061] Simultaneously, the FPGA chip, through the second signal interface, can not only output image data to the first receiving card group 102, but also receive status feedback signals from the first receiving card group 102. Based on these feedback signals, the FPGA chip can understand the operating status, data reception and processing status of the first receiving card group 102, and thus adjust the parameters of the image data output from the second signal interface accordingly, such as changing the image resolution, color mode, and refresh rate, to ensure that the image data can be accurately and stably transmitted to the first receiving card group 102, achieving a good display effect on the screen. This two-way interactive and adaptive adjustment mechanism enhances the stability and adaptability of the display screen control system.

[0062] In one embodiment, the first data output port of the transmitting card 101 sends a first number of pairs of LVDS signal data groups to the first-level distribution card 103; the first-level distribution card 103 then sequentially transmits the LVDS signal data groups to the next-level distribution card 103.

[0063] The second data output port of the transmitting card 101 sends a second number of LVDS signal data groups to the first receiving card group 102; wherein, the first number pair is greater than the second number pair.

[0064] In this embodiment, the first data output port of the transmitting card 101 is responsible for transmitting image data to the first-level distribution card 103, sending a first number of pairs of LVDS signal data groups to the first-level distribution card 103. LVDS (Low Voltage Differential Signaling) has advantages such as high speed, low noise, and low power consumption, making it suitable for long-distance, high-speed data transmission. After receiving these LVDS signal data groups, the first-level distribution card 103 uses a sequential pass-through method, that is, without data processing or modification, directly transmits the data to the next-level distribution card 103 as is. In this way, data is cascaded and transmitted between the distribution cards 103, ultimately realizing the transmission of image data in the distribution card 103 link. At the same time, the second data output port of the transmitting card 101 is responsible for sending a second number of pairs of LVDS signal data groups to the first receiving card group 102. Furthermore, the first number of pairs is greater than the second number of pairs; in a specific embodiment, the first number of pairs is 20 pairs and the second number of pairs is 4 pairs. Since the distribution card 103 link needs to allocate data for multiple receiving card groups 102, more data needs to be transmitted; while the first receiving card group 102, which is directly connected to the second data output port of the sending card 101, has relatively fewer display screen areas or functional requirements under its control, so the amount of data transmitted is also relatively small. Thus, this scheme rationally allocates data transmission resources to meet the data needs of different parts.

[0065] In one embodiment, each level allocation card 103 decodes the first number of LVDS data groups it receives, extracts the second number of LVDS data groups, transmits the extracted second number of LVDS data groups to the corresponding receiving card group 102, and passes the remaining LVDS data groups through to the next level allocation card 103.

[0066] In this embodiment, when each allocation card 103 receives the first number of LVDS data groups from the previous level (sending card 101 or the previous allocation card 103), it first decodes these data to restore the encoded data to a recognizable and processable format. After decoding, the allocation card 103 extracts a second number of LVDS data groups from these first number of LVDS data groups. This extraction is based on system design requirements. Different receiving card groups 102 are responsible for controlling different parts of the display screen, and the required data volume is different. Therefore, the allocation card 103 extracts the data volume required by the corresponding receiving card group 102 according to preset rules. Then, the allocation card 103 transmits the extracted second number of LVDS data groups to the corresponding receiving card group 102 to ensure that the receiving card group 102 can obtain the image data required to control the area of ​​the display screen it is responsible for. At the same time, the allocation card 103 will pass the remaining LVDS data groups through to the next level allocation card 103 to ensure that the data can continue to be transmitted along the cascade link of the allocation card 103 to meet the data needs of other receiving card groups 102. This solution ensures that data can be accurately allocated to the corresponding receiving card group 102 on the distribution card 103 link, while also guaranteeing the integrity and continuity of the entire data transmission link.

[0067] In one embodiment, each receiving card group 102 is connected to a corresponding display screen light panel; the receiving card group 102 outputs the image data sent by the allocation card 103 or the sending card 101 to the corresponding display screen light panel.

[0068] In this embodiment, each receiving card group 102 has a corresponding display screen light panel, and each receiving card group 102 is specifically responsible for controlling a specific display screen light panel. After acquiring image data, the receiving card group 102 outputs this data to the corresponding display screen light panel. The display screen light panel drives each pixel to emit light according to the received image data, thereby displaying the corresponding image on the display screen. Through this scheme, a complete data transmission and control process from the data source (sending card 101) to the final display unit (display screen light panel) is realized, ensuring that the display screen can display image content normally and accurately.

[0069] In one embodiment, the sending card 101 sends a pseudo-random code to the first-level allocation card 103 through the first data output port, and sends a pseudo-random code to the first receiving card group 102 through the second data output port.

[0070] Distribution card 103 receives pseudo-random code sent by transmitting card 101 or pseudo-random code transparently transmitted by upper-level distribution card 103, determines the center phase of signal eye diagram based on pseudo-random code under different sampling clock phases, adjusts local sampling clock based on center phase of signal eye diagram, and performs data sampling on signal sent by transmitting card 101 or upper-level distribution card 103 based on the adjusted local sampling clock.

[0071] The receiving card group 102 receives the pseudo-random code sent by the sending card 101 or the distribution card 103, determines the center phase of the signal eye diagram based on the pseudo-random code under different sampling clock phases, adjusts the local sampling clock based on the center phase of the signal eye diagram, and samples the signal sent by the sending card 101 or the distribution card 103 based on the adjusted local sampling clock.

[0072] This embodiment focuses on adaptive calibration of LVDS signals, aiming to ensure the accuracy and stability of data during transmission. Specifically, the transmitting card 101 acts as a signal source, sending a pseudo-random code to the first-level distribution card 103 through the first data output port, and simultaneously sending a pseudo-random code to the first receiving card group 102 through the second data output port. The pseudo-random code has characteristics similar to a random signal, can be generated by a specific algorithm, and is commonly used for signal testing and calibration. In the data transmission link, the distribution card 103 receives the pseudo-random code from the transmitting card 101, or, when an upper-level distribution card 103 is present, receives the pseudo-random code transparently transmitted by the upper-level distribution card 103.

[0073] Distribution card 103 samples and analyzes the received pseudo-random code under multiple different sampling clock phases. By analyzing the pseudo-random code under different sampling clock phases, distribution card 103 can determine the center phase of the signal eye diagram. This center phase represents the most stable and accurate sampling time of the signal. Then, based on the determined center phase of the signal eye diagram, distribution card 103 adjusts its local sampling clock to match the optimal sampling time of the signal. After clock adjustment, distribution card 103 samples subsequent signals sent from transmitting card 101 or the superior distribution card 103 based on the new local sampling clock, thereby improving the accuracy of data sampling.

[0074] Simultaneously, the receiving card group 102 also receives pseudo-random codes sent from the transmitting card 101 or the distribution card 103. Using a method similar to that of the distribution card 103, it samples the pseudo-random codes at different sampling clock phases to determine the center phase of the signal eye diagram. Then, it adjusts the local sampling clock based on this center phase to adapt it to the optimal sampling time of the signal. Finally, the receiving card group 102 uses the adjusted local sampling clock to sample the signals from the transmitting card 101 or the distribution card 103, ensuring the accuracy of the received data. Through this scheme, both the distribution card 103 and the receiving card group 102 can adaptively adjust their sampling clocks, optimizing the transmission quality of the LVDS signal and reducing the data transmission error rate.

[0075] This application also provides a display screen, including a screen body and a display screen control system according to any of the above embodiments; the screen body is connected to N+1 receiver card groups 102.

[0076] The screen is the physical carrier on which the image is ultimately displayed. It is composed of a large number of pixels. Each pixel can control its brightness and color according to the received signal. Many pixels work together to form a complete image.

[0077] In this embodiment, the screen is connected to N+1 receiver card groups 102, each receiver card group 102 being responsible for controlling a portion of the screen. The receiver card group 102 outputs processed image data to the corresponding display screen backlight panel. The backlight panel drives pixels to emit light based on this data. The pixels controlled by different receiver card groups 102 work together to form a complete image on the screen. This connection method enables precise control of the screen by the display control system, ensuring the accuracy and stability of image display.

[0078] In summary, the display screen in this embodiment of the application uses cascaded distribution cards connected to the sending cards in a specific manner, reducing the number of sending card interfaces, simplifying wiring, and lowering installation complexity and difficulty. Furthermore, the cascaded distribution cards form an ordered link, avoiding transmission chaos and interference caused by complex wiring, reducing signal attenuation and noise, ensuring stable and accurate data transmission, and enhancing system stability. Moreover, the architecture design of the display screen control system allows for the addition of distribution and receiving card groups and their regular connection when controlling larger-scale or more complex display screens, without requiring large-scale modifications to the sending card interfaces, thus adapting to different scale requirements. Through the close cooperation between the screen and the display screen control system, and the collaborative work of various components within the display screen control system, high-quality image display is achieved, enhancing the reliability and performance of the display screen.

[0079] In one embodiment, the display screen further includes N+1 receiving card boxes, where N is a positive integer; the first receiving card group 102 and the sending card 101 are disposed in the first receiving card box, and the remaining N receiving card groups 102 and the corresponding N distributing cards 103 are disposed in the remaining N receiving card boxes respectively.

[0080] In this embodiment, the first receiving card group and the sending card are centrally located in the first receiving card cabinet, while the remaining receiving card groups and their corresponding allocation cards are placed in other receiving card cabinets. This modular design makes the functions of each part relatively independent. During installation, different cabinets can be operated independently, reducing installation complexity; during maintenance, if a problem occurs in a certain cabinet, only that cabinet needs to be repaired, without the need for large-scale disassembly of the entire display screen, improving maintenance efficiency and reducing maintenance costs and time.

[0081] In one embodiment, the receiving card group includes multiple cascaded receiving cards, and the receiving card housing includes multiple sub-housings; the multiple receiving cards of each receiving card group are sequentially arranged in the sub-housings of the corresponding receiving card housing; N+1 receiving card housings are arranged side by side; the distribution card and the sending card are respectively arranged in the first sub-housing of the corresponding receiving card housing. This achieves compact device installation. From an aesthetic perspective, the receiving card housing hides complex electronic components, making the display screen look cleaner and more beautiful.

[0082] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this application, and this application also intends to include these modifications and variations.

Claims

1. A display screen control system, characterized in that, It includes a sending card, N+1 receiving card groups, and N distribution cards, where N is a positive integer; The sending card includes a first data interface and a second data interface; N distribution cards are cascaded in sequence, and the first-level distribution card is connected to the first data interface of the sending card; The first receiving card group is connected to the second data interface of the sending card; the remaining N receiving card groups are connected to the N distribution cards one by one.

2. The display screen control system according to claim 1, characterized in that, Each receiving card group includes multiple cascaded receiving cards; the first-level receiving card of the first receiving card group is connected to the second data output port of the sending card; the first-level receiving cards of the remaining N receiving card groups are respectively connected to the N distribution cards one by one.

3. The display screen control system according to claim 1, characterized in that, The transmitting card includes a SOC chip and an FPGA chip; the SOC chip includes a data transmission terminal, and the FPGA chip includes a data receiving terminal, a first signal interface, and a second signal interface. The data transmission terminal of the SOC chip is connected to the data receiving terminal of the FPGA chip; the SOC chip is used to transmit image data to the FPGA chip; the first signal interface and the second signal interface of the SOC chip are respectively the first data interface and the second data interface of the sending card; the FPGA chip receives the image data and outputs the processed image data to the first-level allocation card and the first receiving card group through the first data interface and the second data interface, respectively.

4. The display screen control system according to claim 3, characterized in that, The FPGA chip receives a status feedback signal from the first-level allocation card through the first signal interface and adjusts the output parameters of the image data of the first signal interface; and / or, the FPGA chip receives a status feedback signal from the first receiving card group through the second signal interface and adjusts the output parameters of the image data of the second signal interface.

5. The display screen control system according to claim 1, characterized in that, The first data output port of the sending card sends a first number of pairs of LVDS signal data groups to the first-level distribution card; the first-level distribution card sequentially transmits the LVDS signal data groups to the next-level distribution card; The second data output port of the transmitting card sends a second number of LVDS signal data groups to the first receiving card group; wherein the first number of pairs is greater than the second number of pairs.

6. The display screen control system according to claim 5, characterized in that, Each level of the allocation card decodes the first number of LVDS data groups it receives, extracts the second number of LVDS data groups, transmits the extracted second number of LVDS data groups to the corresponding receiving card group, and passes the remaining LVDS data groups through to the next level of the allocation card.

7. The display screen control system according to claim 1, characterized in that, Each of the receiving card groups is connected to a corresponding display screen light panel; the receiving card group outputs the image data sent by the distribution card or the sending card to the corresponding display screen light panel.

8. The display screen control system according to claim 1, characterized in that, The sending card sends a pseudo-random code to the first-level allocation card through the first data output port, and sends a pseudo-random code to the first receiving card group through the second data output port; The distribution card receives the pseudo-random code sent by the sending card or the pseudo-random code transmitted by the upper-level distribution card, and determines the center phase of the signal eye diagram based on the pseudo-random code under different sampling clock phases; adjusts the local sampling clock according to the center phase of the signal eye diagram, and performs data sampling on the signal sent by the sending card or the upper-level distribution card based on the adjusted local sampling clock. The receiving card group receives the pseudo-random code sent by the sending card or the distribution card, determines the center phase of the signal eye diagram based on the pseudo-random code under different sampling clock phases, adjusts the local sampling clock based on the center phase of the signal eye diagram, and samples the signal sent by the sending card or the distribution card based on the adjusted local sampling clock.

9. A display screen, characterized in that, It includes a screen body and a display control system as described in any one of claims 1 to 8; the screen body is connected to the N+1 receiving card groups.

10. The display screen according to claim 9, characterized in that, The display screen also includes N+1 receiving card boxes, where N is a positive integer; the first receiving card group and the sending card are set in the first receiving card box, and the remaining N receiving card groups and the corresponding N distribution cards are set in the remaining N receiving card boxes respectively.

Images