Display screen system and display device

Abstract

The invention is suitable for the technical field of display screen control, and provides a display screen system and a display device.The display screen system comprises a sending box and a plurality of display box bodies, the sending box comprises a redundant power module, the redundant power module is used for generating a plurality of redundant power signals, and the redundant power signals correspond to the display box bodies one to one; each redundant power supply signal is used for providing redundant power supply for the corresponding display box body; each display box body comprises a main power supply module and does not comprise a redundant power supply assembly; each display box body is used for controlling the main power supply module to supply power to the display box body when the main power supply module supplies power normally; and when the power supply of the main power supply module is abnormal, the corresponding redundant power supply signal is switched to supply power to the display box body. According to the display screen system, the redundant power supply module is arranged at the sending box end in a centralized mode, the redundant power supply signal generated by the redundant power supply module is transmitted to the display box body to serve as a redundant power supply, and the overall hardware cost of the display screen system is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display screen control, and particularly relates to a display screen system and a display device. BACKGROUND

[0002] With the development of display technology, display screens are widely used in application scenarios such as broadcasting centers, traffic control, financial information display, large-scale event sites and security monitoring centers due to their low cost, small power consumption, high visibility and free assembly. In this application scenario, once the display screen is interrupted, it may cause huge economic losses, information transmission interruption and even public safety incidents. Therefore, setting up a redundant power supply in the display screen system has become a key means to ensure the stable operation of the display screen system.

[0003] In the prior art, at least one redundant power module needs to be additionally configured for each display box body in addition to the main power module, that is, at least two power modules, including a main power module and at least one redundant power module, need to be configured for a single display box body. For a display screen system composed of multiple display box bodies, the overall hardware cost is greatly increased. SUMMARY

[0004] The display screen system and the display device provided by the embodiments of the present application can solve the problem that the prior art directly integrates a redundant power module in each display box body, resulting in a significant increase in the overall hardware cost of the display screen system.

[0005] In a first aspect, the embodiments of the present application provide a display screen system, which comprises a sending box and a plurality of display box bodies. The sending box comprises a redundant power module, and the redundant power module is used to generate a plurality of redundant power signals. The plurality of redundant power signals correspond one-to-one to the plurality of display box bodies, and each redundant power signal is used to provide redundant power supply for the corresponding display box body. Each display box body comprises a main power module and does not comprise a redundant power component. Each display box body is used to control the main power module to supply power to the display box body when the main power module supplies power normally, and to switch to the corresponding redundant power signal to supply power to the display box body when the main power module supplies power abnormally.

[0006] The embodiment of the application realizes that the redundant power supply module is arranged in the sending box, and the redundant power supply module generates one-to-one redundant power supply signals for each display box in the display screen system. When the main power supply module supplies power normally, the display box is supplied with power by the main power supply module. When the main power supply module supplies power abnormally, the corresponding display box is supplied with redundant power supply support by the redundant power supply signal, which replaces the design that each display box is internally provided with a redundant power supply module in the prior art. Therefore, only one main power supply module needs to be reserved in each display box in the embodiment of the application, and no redundant power supply component needs to be additionally configured, so that the internal structure of the display box is simplified, the hardware cost of the redundant power supply component in each display box is saved, and the overall hardware cost of the display screen system is reduced.

[0007] In a possible implementation of the first aspect, the sending box further includes a data processing module and a plurality of first encoding modules corresponding to each of the display boxes. The data processing module is configured to receive display data, generate a plurality of display signals corresponding to each of the display boxes according to the display data, and send each of the display signals to the corresponding first encoding module. The redundant power supply module is further configured to send each of the redundant power supply signals to the corresponding first encoding module. Each of the first encoding modules is configured to receive the corresponding display signal and the redundant power supply signal, encode the corresponding display signal and the redundant power supply signal, generate a composite signal, and send the composite signal to the corresponding display box.

[0008] The embodiment of the application realizes that the redundant power supply signal and the display signal are encoded and combined into a composite signal, and then transmitted to the corresponding display box through one communication link, through data interaction among the data processing module, the redundant power supply module, and the corresponding first encoding module, without separately arranging independent transmission lines for the display signal and the redundant power supply signal, so that the wiring architecture of the display screen system is simplified, and the complexity and labor cost of wiring construction are reduced. At the same time, single-link transmission ensures the transmission synchronization of the display signal and the redundant power supply signal, and provides timing protection for subsequent decoding and separation of the composite signal at the display box end.

[0009] In a possible implementation of the first aspect, each of the display boxes further includes a decoding module, a power management module, a receiving card, and a display panel. The decoding module is configured to receive the corresponding composite signal, decode the composite signal to obtain the redundant power supply signal and the display signal, send the redundant power supply signal to the power management module, and send the display signal to the receiving card. The receiving card is configured to drive the display panel according to the display signal. The power management module is configured to detect the power supply state of the main power module, and when the main power module supplies power normally, control the main power module to supply power to the receiving card and the display panel; when the main power module supplies power abnormally, switch to the redundant power signal to supply power to the receiving card and the display panel.

[0010] The display box decoding module is used to decode and separate the composite signal of single-link transmission. After the display signal and the redundant power signal are accurately split, the display signal is transmitted to the receiving card for driving picture display, and the redundant power signal is transmitted to the power management module for standby. When the main power supply supplies power abnormally, the power management module does not need to wait for the remote transmission of the redundant power signal, but can directly start redundant power supply, greatly shortens the power supply switching response time, ensures the power supply of the receiving card and the display panel and other core power components, and further guarantees the continuity and stability of the display picture. In a possible implementation manner of the first aspect, the sending box includes a plurality of first ports, each display box includes a second port, the first encoding module sends the composite signal to the corresponding display box through the corresponding first port, and the decoding module of the corresponding display box receives the composite signal through the second port. The first port and the second port are POE ports.

[0011] The power and data synchronous transmission characteristics of the POE port are used to realize the scheme of transmitting the display signal and the redundant power signal after being encoded into a composite signal through a link, and solve the problems of complex wiring and high labor cost in the traditional scheme.

[0012] In a possible implementation manner of the first aspect, the power management module is further configured to generate a first request signal when the main power module supplies power normally, and send the first request signal to the sending box. The data processing module in the sending box is further configured to receive the first request signal, and transmit the display signal to the display box according to the first request signal. The receiving card in the display box is configured to receive the display signal.

[0013] In this embodiment, the power management module of the display cabinet sends a first request signal to the transmitting box. This first request signal enables the transmitting box to confirm that the main power module of the corresponding display cabinet is supplying power normally. At this time, the display cabinet can meet the power supply requirements of the receiving card and the display panel through the main power module without the need for redundant power signals. Therefore, the transmitting box only transmits display signals to the display cabinet, which can significantly reduce the signal processing volume and computing load of the transmitting box, reduce the hardware resource occupancy rate, and improve the overall operating efficiency of the display system. At the same time, it reduces data redundancy in the signal transmission process, effectively reduces the transmission delay and distortion probability of the display signal, and thus ensures the smoothness of the display screen.

[0014] In one possible implementation of the first aspect, the power management module is further configured to generate a second request signal and send the second request signal to the transmitting box when the main power module experiences a power supply failure. The data processing module of the sending box is also used to receive the second request signal and transmit the composite signal to the display cabinet according to the second request signal; The decoding module in the display enclosure is used to receive the composite signal.

[0015] In this embodiment, the power management module of the display cabinet sends a second request signal to the transmitting box. This second request signal enables the transmitting box to confirm that the main power module of the corresponding display cabinet is experiencing a power supply abnormality. At this time, the display cabinet needs to use a redundant power signal to power the receiving card and the display panel. Therefore, the transmitting box transmits a composite signal generated by the encoding combination of the display signal and the redundant power signal to the display cabinet, so that the display cabinet can obtain the redundant power signal in a timely manner and provide redundant power supply support for the receiving card and the display panel, ensuring the stable operation of the display system.

[0016] In one possible implementation of the first aspect, the power management module is further configured to acquire the output voltage of the main power module, and determine that the main power module is supplying power normally when the output voltage of the main power module is greater than or equal to a preset voltage; and determine that the main power module is supplying power abnormally when the output voltage of the main power module is less than the preset voltage.

[0017] The power management module in this embodiment acquires the output voltage of the main power module and compares the acquired output voltage with a preset voltage. Based on the comparison result, it can promptly obtain the power supply status of the main power module, providing data support for the power management module to promptly feed back the first request signal or the second request signal to the transmitting box.

[0018] In one possible implementation of the first aspect, each of the display cabinets further includes a status indicator light; The power management module is also used to control the status indicator to display a first state when the main power module is supplying power normally; The power management module is also used to control the status indicator to display a second state when the main power module is abnormally powered, wherein the first state is different from the second state.

[0019] This application embodiment uses status indicator lights on the display cabinet to provide real-time feedback on the power supply status of the display cabinet to maintenance personnel, making it convenient for on-site maintenance personnel to understand the power supply status of the display system in a timely manner.

[0020] In one possible implementation of the first aspect, multiple display cabinets are cascaded sequentially according to a preset rule to form a display cabinet group, and each display cabinet group corresponds to one of the first encoding modules; The first encoding module is used to transmit the composite signal to the first display cabinet corresponding to the display cabinet group; In the display cabinet group, the preceding display cabinet is used to cascade the composite signal to the following display cabinet, until all display cabinets in the display cabinet group have received the composite signal.

[0021] This application embodiment uses multiple display cabinets to form a display cabinet group by sequentially cascading them according to a preset rule, and configuring a first encoding module for each display cabinet group, thereby saving the number of first encoding modules in the transmitting box and thus saving the hardware cost of the transmitting box.

[0022] Secondly, embodiments of this application provide a display device, including the display screen system described in any one of the first aspects above.

[0023] The beneficial effects of the embodiments in this application compared with the prior art are: The first aspect of this application provides a display screen system including a transmitting box and multiple display cabinets. The transmitting box includes a redundant power module, which generates multiple redundant power signals. Each redundant power signal corresponds one-to-one with a display cabinet, and each redundant power signal provides redundant power to the corresponding display cabinet. Each display cabinet includes a main power module but does not include a redundant power module. Each display cabinet controls the main power module to supply power to the display cabinet when the main power module is supplying power normally, and switches to the corresponding redundant power signal to supply power to the display cabinet when the main power module is supplying power abnormally.

[0024] Compared to existing technologies that configure redundant power supplies separately in each display cabinet, the display system of this application centrally sets up the redundant power supply modules at the transmitting box end. The redundant power supply modules generate a one-to-one redundant power signal for each display cabinet in the display system. When the main power supply module is working properly, it supplies power to the display cabinet. When the main power supply module is not working properly, the redundant power signal generated by the redundant power supply module is sent to the display cabinet as a redundant power supply, providing redundant power support for the corresponding display cabinet. There is no need to set up an independent redundant power supply in each display cabinet. Therefore, in this embodiment, each display cabinet only needs to retain one main power supply module, without the need to configure additional redundant power supply components. This significantly reduces the number of redundant power supply configurations inside the display cabinet, saves the hardware cost of redundant power supply components in each display cabinet, and thus reduces the overall hardware cost of the display system.

[0025] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a display screen system in the prior art; Figure 2 This is a schematic diagram of a display screen system provided in an embodiment of this application; Figure 3 This is a schematic diagram of a transmitting box provided in an embodiment of this application; Figure 4 This is a schematic diagram of a display cabinet provided in one embodiment of this application; Figure 5 This is a schematic diagram of a display screen system provided in an embodiment of this application; Figure 6 This is a schematic diagram of a transmitting box provided in one embodiment of this application. Detailed Implementation

[0028] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0029] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0030] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0032] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0034] With the development of display technology, LED displays have become widely used in applications such as broadcasting centers, traffic control, financial information display, large-scale event venues, and security monitoring centers due to their advantages of low cost, low power consumption, high visibility, and flexible assembly. In these applications, a display interruption can lead to significant economic losses, information transmission disruptions, and even public safety incidents. Therefore, setting up redundant power supplies in the display system is a crucial means to ensure the stable operation of the system. Redundant power supplies refer to equipping an LED display with multiple power modules. These modules share the load, ensuring that even if one or more power modules fail, the remaining modules can still support the normal operation of the entire LED display, preventing blackouts or system failures.

[0035] Existing display screen systems employ redundant power supply designs, installing two or more power modules of identical specifications and power ratings inside each display cabinet. Figure 1 As shown, one power module is designated as the main power module, handling the entire power supply load of the display cabinet during normal operation. The other power module serves as a redundant power supply, operating in standby mode with no-load or light-load operation. The transmitting box transmits display data to the display cabinet. Under normal conditions, the main power module operates independently, supplying power to core components such as the receiving card and display panel, ensuring the display cabinet can display normally based on the received data. At this time, the redundant power supply, while powered on, does not output power, maintaining only a standby ready state. When the main power supply fails, the display system uses a built-in switching mechanism to switch the power supply link to the redundant power supply, which then takes over the power supply work of the main power supply. In other words, in the current solution, a single display cabinet requires at least two power modules, including one main power module and at least one redundant power module. For a display system composed of multiple display cabinets, this significantly increases the overall hardware cost of the display system. To address the aforementioned technical issues, this application provides a display screen system, including a transmitting box and multiple display cabinets. The transmitting box includes a redundant power module, which generates multiple redundant power signals, each corresponding to one of the multiple display cabinets. Each redundant power signal provides redundant power to its corresponding display cabinet. Each display cabinet includes a main power module but does not include a redundant power module. When the main power module is supplying power normally, each display cabinet controls the main power module to supply power to the display cabinet; when the main power module is supplying power abnormally, it switches to the corresponding redundant power signal to supply power to the display cabinet.

[0036] Compared to existing technologies that configure redundant power supplies separately in each display cabinet, the display system of this application centrally sets up the redundant power supply modules at the transmitting box end. The redundant power supply modules generate a one-to-one redundant power signal for each display cabinet in the display system. When the main power supply module is working properly, it supplies power to the display cabinet. When the main power supply module is not working properly, the redundant power signal generated by the redundant power supply module is sent to the display cabinet as a redundant power supply, providing redundant power support for the corresponding display cabinet. There is no need to set up an independent redundant power supply in each display cabinet. Therefore, in this embodiment, each display cabinet only needs to retain one main power supply module, without the need to configure additional redundant power supply components. This significantly reduces the number of redundant power supply configurations inside the display cabinet, saves the hardware cost of redundant power supply components in each display cabinet, and thus reduces the overall hardware cost of the display system.

[0037] See Figures 2-6 This is a schematic diagram of the display screen system provided in the embodiments of this application.

[0038] like Figure 2 As shown, a display screen system includes a transmitting box 10 and multiple display cabinets 20. The transmitting box 10 includes a redundant power supply module 101, which generates multiple redundant power signals. Each redundant power signal corresponds one-to-one with one of the multiple display cabinets 20, and each redundant power signal provides redundant power to the corresponding display cabinet 20. Each display cabinet 20 includes a main power supply module 201, but does not include redundant power supply components. Each display cabinet 20 is used to control the main power supply module 201 to supply power to the display cabinet 20 when the main power supply module 201 is functioning normally; and to switch to the corresponding redundant power signal to supply power to the display cabinet 20 when the main power supply module 201 is malfunctioning.

[0039] For example, the transmitting box 10 has a built-in redundant power supply module. The redundant power supply module 101 generates a corresponding number of redundant power signals according to the number of display cabinets 20. Each redundant power signal is electrically connected to the corresponding display cabinet 20 one-to-one through the transmission link, providing redundant power supply only to the corresponding display cabinet 20. Each display cabinet 20 is only configured with the main power supply module 201, without the need to set any independent redundant power supply components. The display cabinet is also used to detect the power supply status of the main power supply module 201. When the main power supply module 201 is in normal power supply, it controls the main power supply module 201 to supply power to the display cabinet 20. When the main power supply module 201 is in abnormal power supply, it switches the power supply link to the redundant power signal to supply power to the display cabinet, ensuring that the display components of the display cabinet do not display interrupted.

[0040] For example, the redundant power supply module 101 calculates the total power requirement of each display cabinet 20 based on the rated power parameters of all power-consuming modules (receiver card and display panel) inside each display cabinet 20, and determines the power supply requirement parameters of each display cabinet based on the total power requirement. These power supply requirement parameters include, for example, rated output voltage, maximum output current, and rated output power. Then, the redundant power supply module 101 generates N independent redundant power signals based on the number N of display cabinets. Each redundant power signal is dedicated to a corresponding display cabinet, and the output voltage, maximum output current capability, and output power of each redundant power signal are matched to the power supply requirement parameters of the corresponding display cabinet.

[0041] In some embodiments, the transmitting box further includes a data processing module 102 and a plurality of first encoding modules 103 corresponding one-to-one with each display cabinet 20; the data processing module 102 is used to receive display data, generate a plurality of display signals corresponding one-to-one with each display cabinet 20 according to the display data, and send each display signal to the corresponding first encoding module 103; the redundant power supply module is also used to send each redundant power supply signal to the corresponding first encoding module 103; each first encoding module 103 is used to receive the corresponding display signal and the redundant power supply signal, encode the corresponding display signal and the redundant power supply signal to generate a composite signal, and send the composite signal to the corresponding display cabinet 20.

[0042] For example, such as Figure 3 As shown, the data processing module 102 first receives externally input display data, such as 4K / 8K high-definition video signals, text announcements, static images, and data reports. Then, based on the number of display cabinets (N), the data processing module 102 divides the display data into N independent display signals. Each display signal contains the portion of the screen information that a unique corresponding display cabinet needs to display. If the display data is a video stream, the video stream frame data is divided into N sub-video stream signals according to the physical display areas corresponding to the N display cabinets (e.g., the entire screen is divided into N independent sub-areas). If the display data is graphic information, the graphic content is decomposed into N sub-graphic signals according to the display range of the N display cabinets, ultimately generating N independent display signals. Each display signal corresponds to one display cabinet, ensuring that each display cabinet can synchronously present the corresponding area of ​​the entire screen display content after receiving the corresponding display signal, achieving the effect of multiple display cabinets collaboratively forming a complete display screen. After generating the N display signals, the data processing module 102 transmits each display signal to the corresponding first encoding module 103.

[0043] Each first encoding module 103 receives a redundant power signal and a display signal. Using a preset encoding algorithm, it merges the redundant power signal and the display signal into a composite signal. Then, the first encoding module 103 transmits the composite signal to the corresponding display cabinet 20 via a single cable. In other words, the display system of this application achieves synchronous transmission of display data and power data through the same transmission link between the transmitting box 10 and the display cabinet 20. This eliminates the need for separate transmission lines for the display signal and the redundant power signal, simplifying the wiring architecture of the display system and reducing the complexity and labor costs of wiring construction. Simultaneously, single-link transmission ensures the synchronization of the display signal and the redundant power signal, providing timing assurance for the subsequent decoding and separation of the composite signal at the display cabinet end.

[0044] In some embodiments, each display cabinet 20 further includes a decoding module 202, a power management module 203, a receiving card 204, and a display panel 205. The decoding module 202 receives the corresponding composite signal, decodes the composite signal to obtain a redundant power signal and a display signal. After obtaining the redundant power signal and display signal, the decoding module 202 transmits the display signal to the receiving card 204 and simultaneously sends the redundant power signal to the power management module 203. The receiving card 204 drives the display panel 205 according to the display signal. The power management module 203 detects the power supply status of the main power module 201. When the main power module 201 is powered normally, it controls the main power module 201 to supply power to the receiving card 204 and the display panel 205. When the main power module 201 is powered abnormally, it switches to the redundant power signal to supply power to the receiving card 204 and the display panel 205.

[0045] For example, such as Figure 4 As shown, after the first encoding module 103 sends the composite signal to the corresponding display cabinet 20, the decoding module 202 of the display cabinet 20 receives the corresponding composite signal through a preset signal interface. Based on a preset decoding algorithm corresponding to the preset encoding algorithm of the first encoding module 103, the composite signal is separated into an independent display signal and a redundant power signal. The preset encoding algorithm and the preset decoding algorithm are inverse operations of each other. After separating the display signal and the redundant power signal, the decoding module 202 transmits the display signal to the receiving card 204 and transmits the redundant power signal to the power management module 203, enabling the power management module 203 to store redundant power energy. For example, the power management module 203 also includes a PoE power module 206. After receiving the redundant power signal transmitted by the decoding module 202, the power management module stores the redundant power signal in the PoE power module 206. At this time, the PoE power module 206 is in a standby ready state, ready to respond to redundant power supply trigger commands at any time.

[0046] For example, after receiving the display signal, the receiving card 204 parses the display signal, performs frame synchronization processing and pixel mapping conversion based on a preset display control protocol (such as SPI, LVDS or a custom display protocol), and generates a driving signal that adapts to the pixel driving parameters of the display panel 205 (including driving voltage, horizontal and vertical synchronization signals, grayscale control signals and pixel refresh frequency, etc.). The driving signal meets the hardware driving requirements of the display panel 205 and is used to precisely drive the pixel array of the display panel 205 to light up in an orderly manner, so as to achieve stable and distortion-free display of the preset image.

[0047] For example, the power management module 203 establishes electrical connections with the main power module 201, the decoding module 202, the receiver card 204, and the display panel 205, respectively. The power management module 203 is used to collect the output voltage parameters of the main power module 201 in real time and dynamically decide the power supply link switching logic of the display cabinet 20 based on the voltage detection results. For example, when the output voltage of the main power module 201 is detected to be greater than or equal to a preset voltage, the power management module 203 controls the main power module 201 to start the main power supply link to provide main power to the receiver card 204 and the display panel 205. When the main power module 201 is detected to be less than the preset voltage, the power management module 203 immediately triggers the redundant power supply mechanism, disconnects the main power supply link and connects the backup power supply link of the PoE power module 206 through an internal high-speed switching switch (response time not exceeding 10ms). At this time, the POE power module 206 converts the stored redundant power signals into a power supply voltage (such as DC 5V or DC 12V) that is compatible with the receiver card 204 and the display panel 205 through the voltage conversion unit built into the power management module 203. This provides redundant power supply to the receiver card 204 and the display panel 205, maintaining the normal operation of the receiver card and the display panel, thereby avoiding display abnormalities such as black screen, distorted screen, screen stuttering or data loss caused by the failure of the main power module 201.

[0048] In this embodiment, the redundant power supply module 101 of the display system is centrally located at the transmitting box 10. The display cabinet 20 is only equipped with the main power supply module 201 as the main power supply module, which is dedicated to providing main power supply for the power consumption modules of the display cabinet 20 (including the receiving card 204 and the display panel 205). The redundant power signal generated by the redundant power supply module 101 is transmitted to the decoding module 202 of the display cabinet 20 through a composite signal. The decoding module 202 decodes the composite signal and separates it into a redundant power signal and a display signal. Then, the decoding module 202 transmits the redundant power signal to the POE power module 206, so that the POE power module 206 receives the power data. In the event of a failure of the main power supply module 201, the POE power module 206 can quickly take over the power supply task and provide a stable backup power supply for the power consumption modules of the display cabinet 20.

[0049] Compared to existing technologies that configure redundant power supplies separately in each display cabinet, the display system of this application integrates the redundant power supply module 101 at the transmitting box 10. The redundant power supply module generates a one-to-one redundant power signal for each display cabinet in the display system. When the main power supply module is working properly, it supplies power to the display cabinet. When the main power supply module is not working properly, the redundant power signal generated by the redundant power supply module is sent to the display cabinet as a redundant power supply, providing redundant power support for the corresponding display cabinet. There is no need to set up an independent redundant power supply in each display cabinet 20. Therefore, in this embodiment, each display cabinet only needs to retain one main power supply module, and there is no need to configure additional redundant power supply components. This significantly reduces the number of redundant power supplies configured in the display cabinet 20, and reduces the overall hardware cost of the display system (e.g., the material cost of redundant power supply modules, heat dissipation structures, etc. can be reduced for a single display cabinet). At the same time, the centralized redundant power supply design facilitates system-level power supply management and maintenance, reduces the complexity of synchronous control when there is a redundant power supply in each display cabinet, and improves the power supply reliability and maintainability of the entire display system.

[0050] For example, the power management module 203 is also used to obtain the power supply status of the main power module 201, and determine the power supply link for powering the receiver card 204 and the display panel 205 of the display cabinet 20 based on the power supply status of the main power module 201.

[0051] In some embodiments, the power management module 203 is further configured to obtain the output voltage of the main power module 201, and determine that the main power module 201 is supplying power normally when the output voltage of the main power module 201 is greater than or equal to a preset voltage; and determine that the main power module 201 is supplying power abnormally when the output voltage of the main power module 201 is less than the preset voltage.

[0052] For example, the power management module 203 acquires the output voltage of the main power module 201 in real time through a voltage sensor or ADC acquisition module, and compares the acquired output voltage with a preset voltage. When the output voltage of the main power module 201 is greater than or equal to the preset voltage, it is determined that the main power module 201 is supplying power normally. At this time, the power management module 203 controls the main power module 201 to start the main power supply link, providing main power to the receiver card 204 and the display panel 205. When the output voltage of the main power module 201 is less than the preset voltage, it is determined that the main power module 201 is supplying power abnormally. At this time, the power management module 203 records the fault status of the main power module 201, and then performs a physical switch of the power supply link by controlling electronic switches such as MOSFETs or relays. The power management module 203 triggers the redundant power supply mechanism, disconnecting the main power supply link and connecting the backup power supply link of the POE power module 206 through an internal high-speed switching switch (response time not exceeding 10ms). At this time, the POE power module 206 converts the stored redundant power signal into a power supply voltage (such as DC 5V or DC 12V) compatible with the receiver card 204 and the display panel 205 through the voltage conversion unit built into the power management module 203, providing redundant power supply for the receiver card 204 and the display panel 205 to maintain the normal operation of the receiver card 204 and the display panel 205.

[0053] For example, the power management module 203 can also use a multi-dimensional detection mechanism to determine the fault of the main power module 201. In addition to determining the fault by the output voltage of the main power module 201, it can also determine the fault condition of the main power module 201 by detecting the power supply on / off status, the upper limit of the output voltage, and the output current load status of the main power module 201. If any abnormal condition such as power failure, overvoltage, or current overload is detected in the main power module 201, it is determined that the main power module 201 is in a fault state. When the main power module 201 is determined to be faulty, the power management module 203 immediately triggers the power supply link switching command, controls the internal high-speed switching switch to cut off the main power supply link (main power module 201), and connects the backup power supply link (POE power module 206) to ensure the power supply continuity of the receiver card 204 and the display panel 205.

[0054] For example, when the power management module 203 determines that the main power module 201 has failed, it first outputs a power-off control signal to drive the internal main power supply link switch to disconnect, cutting off the power connection between the main power module 201 and the receiver card 204 and the display panel 205. After the power management module 203 confirms through its built-in detection unit that the voltage and current of the main power supply link have dropped to a preset safety threshold, it then outputs a conduction control signal to drive the internal backup power supply link switch to close, connecting the power supply link between the PoE power module and the receiver card 204 and the display panel 205. At the same time, it controls the voltage conversion unit to convert the redundant power signal into an adaptive power supply voltage, achieving seamless access to redundant power supply.

[0055] For example, when the POE power module completes the connection of the backup power supply link and successfully provides stable redundant power supply to the receiver card 204 and the display panel 205, the power management module 203 updates the system power status identifier to POE redundant power supply mode in real time and triggers the preset alarm mechanism simultaneously.

[0056] For example, one alarm implementation method is as follows: the power management module 203 outputs an alarm control signal to drive the status indicator light configured on the display cabinet 20 to switch to a preset alarm state, allowing on-site maintenance personnel to intuitively identify power failures and the current power supply mode. Another alarm implementation method is as follows: the power management module 203 establishes a data connection with the maintenance management platform through a communication interface, and sends an alarm message containing information such as the fault type (e.g., main power module undervoltage / overvoltage / power failure / overload), fault occurrence time, current power supply mode (POE redundant power supply), and display cabinet number to the maintenance personnel's terminal (e.g., computer client, mobile maintenance APP) according to a preset communication protocol (e.g., TCP / IP or MQTT protocol), achieving remote real-time fault notification. Besides the above examples, this application can also employ other implementation methods for triggering preset alarm mechanisms, which will not be elaborated here.

[0057] For example, when the PoE power module provides redundant power to the receiver card 204 and the display panel 205, the power management module 203 is also configured to continuously monitor the working status of the main power module 201. When it is detected that the output voltage and current of the main power module 201 have recovered to the preset normal threshold range (such as the output voltage being DC 12V±5% or the output current being stable within the rated load range), and the stable duration reaches the preset recovery judgment time (such as 3s~5s, to avoid erroneous switching due to instantaneous fluctuations), it is determined that the main power module 201 has recovered to normal operation. At this time, the power management module 203 first disconnects the redundant power supply link between the PoE power module 206 and the receiver card 204 and the display panel 205, and then connects the main power supply link between the main power module 201 and the receiver card 204 and the display panel 205 to restore the main power supply mode. After the power supply mode switch is completed, the power management module 203 updates the system power status indicator to the main power supply mode and simultaneously triggers the alarm clearance mechanism (such as the control status indicator light switching to a solid green light, or sending a fault clearance notification to the operation and maintenance management platform).

[0058] In some embodiments, each display cabinet further includes a status indicator light; the power management module 203 is also used to control the status indicator light to display a first state when the main power module 201 is powered normally; and to control the status indicator light to display a second state when the main power module 201 is powered abnormally, wherein the first state and the second state are different.

[0059] For example, when the main power module 201 is detected to be in normal working condition, providing main power to the receiver card 204 and the display panel 205, the power management module 203 outputs a first control signal, and the control status indicator displays the first state (e.g., a solid green light with a brightness range of 50cd~100cd), which is used to indicate that the current display cabinet 20 is in the main power supply mode; when the redundant power signal (after conversion by the POE power module 206) is detected to provide redundant power to the receiver card 204 and the display panel 205, a second control signal is output, and the power management module 203 controls the status indicator to display the second state (e.g., a solid red light or a flashing red light with a flashing frequency of 1Hz~2Hz and a brightness range of 50cd~100cd), which is used to indicate that the current display cabinet 20 is in the POE redundant power supply mode.

[0060] In some embodiments, the transmitting box includes a plurality of first ports, and each display cabinet includes a second port; each first encoding module 103 transmits a composite signal to the corresponding display cabinet 20 through the corresponding first port; the decoding module 202 of the corresponding display cabinet 20 receives the composite signal through the second port, wherein the first port and the second port are PoE ports.

[0061] For example, the transmitting box 10 is configured with N first ports (N is a positive integer, N≥1), and each display cabinet 20 is configured with at least two second ports (signal input and signal output, respectively). The output of each first encoding module 103 establishes a signal connection with the second port (signal input) of the corresponding display cabinet 20 through the corresponding first port, for directional transmission of the composite signal (including redundant power signal and display signal) generated by the first encoding module 103 to the corresponding display cabinet 20. The display screen system is composed of multiple cascaded display cabinets 20. Adjacent display cabinets 20 are cascaded through their respective second ports (the signal output of the second port of the previous display cabinet is connected to the signal input of the second port of the next display cabinet), so that the composite signal can be transmitted sequentially to all display cabinets 20 in the display screen system through the cascaded link, ensuring that each display cabinet 20 can obtain the complete composite signal to achieve redundant power supply and display functions. Among them, the first port and the second port are PoE ports.

[0062] In existing technologies, only display data needs to be transmitted between the transmitting box and the display cabinet, and between display cabinets themselves; synchronous transmission of power signals is not required. Therefore, RJ45 interfaces, which only support data transmission, are used. However, in the technical solution of this application, composite signals need to be transmitted between the transmitting box 10 and the display cabinet 20, and between adjacent display cabinets 20. The composite signal includes both power signals (i.e., redundant power supply signals) used to achieve redundant power supply and display signals used to drive the display. Traditional RJ45 interfaces cannot achieve synchronous transmission of power and data. Therefore, this application designs both the first and second ports as PoE ports. Through the power line communication (PLC) technology of the PoE port or the multiplexing design of the network cable core wires, redundant power signals and display signals are synchronously transmitted in the same transmission link. This simplifies the wiring structure of the display screen system (eliminating the need to lay power lines and data lines separately) and ensures the stability and integrity of composite signal transmission, providing key interface support for the realization of a centralized redundant power supply architecture.

[0063] If each display cabinet corresponds to one first encoding module, when the display system contains a large number of display cabinets, the number of first encoding modules that the transmitting box needs to have built in is large, which causes the hardware cost of the transmitting box to increase linearly. In order to reduce the hardware cost of the transmitting box, this application proposes a solution.

[0064] In some embodiments, multiple display cabinets 20 are cascaded sequentially according to a preset rule to form a display cabinet group, and each display cabinet group corresponds to a first encoding module; the first encoding module is used to transmit the composite signal to the first display cabinet of the display cabinet group; in the display cabinet group, the previous display cabinet is used to cascade the composite signal to the next display cabinet, until all display cabinets in the display cabinet group have received the composite signal.

[0065] For example, the display system includes 128 display cabinets 20. According to a preset rule of 8 display cabinets per group, the 128 display cabinets are divided into 16 display cabinet groups. The 8 display cabinets in each display cabinet group are cascaded in physical splicing order. Adjacent display cabinets are connected through built-in cascading interfaces to form a chain transmission structure of first display cabinet → second display cabinet → ... → eighth display cabinet. The redundant power module 101 of the transmitting box 10 generates 16 independent group-level redundant power signals according to the power supply requirements of the 8 display cabinets in each display cabinet group. These correspond to 16 first encoding modules 103. Each first encoding module 103 receives the corresponding group-level redundant power signal and group-level display signal, and combines them into a group-level composite signal through a frequency division multiplexing algorithm. This group-level composite signal contains the display data and redundant power data of all display cabinets in the corresponding display cabinet group.

[0066] This application embodiment uses multiple display cabinets to form a display cabinet group by sequentially cascading them according to a preset rule, and configuring a first encoding module for each display cabinet group, thereby saving the number of first encoding modules in the transmitting box and thus saving the hardware cost of the transmitting box.

[0067] The redundant power supply function of the aforementioned technical solution relies on the PoE power module maintaining a real-time online state. However, the long-term real-time online state of the PoE power module 206 will cause unnecessary resource waste, such as continuously occupying the power supply of the transmitter box 10 and increasing the energy consumption of link transmission. Moreover, long-term online operation may shorten the service life of the PoE power module 206. In order to solve the above technical problems, this application provides a solution.

[0068] In some embodiments, the power management module 203 is further configured to generate a first request signal when the main power module 201 is powered normally, and send the first request signal to the transmitting box 10; the data processing module 102 in the transmitting box 10 is further configured to receive the first request signal and transmit the display signal to the display cabinet 20 according to the first request signal; the receiving card 204 in the display cabinet 20 is configured to receive the display signal.

[0069] For example, such as Figure 6As shown, the transmitting box 10 also includes N encoding mode selection modules 104. The encoding mode selection module 104 includes two encoding modes: encoding mode one transmits display signals, and encoding mode two transmits composite signals. The power management module 203 of each display cabinet 20 detects the power supply status of the main power module 201 in real time. When it detects that the main power module 201 is powered normally (e.g., the output voltage of the main power module 201 is greater than the preset voltage), it generates a first request signal. The first request signal is transmitted in reverse through the second port (POE port) of the display cabinet 20 to the corresponding encoding mode selection module 104 of the transmitting box 10. After receiving the first request signal, the encoding mode selection module 104 selects encoding mode one and transmits the display signal to the corresponding display cabinet 20. After receiving the display signal, the display cabinet 20 transmits the display signal to the receiving card 204. The receiving card 204 generates a drive signal according to the display signal and drives the display panel 205 to display the corresponding image. At this time, the POE power module 206 has no redundant power signal and uses the main power module 201 to provide main power to the display cabinet 20.

[0070] In this embodiment, the power management module of the display cabinet sends a first request signal to the transmitting box. This first request signal enables the transmitting box to confirm that the main power module of the corresponding display cabinet is supplying power normally. At this time, the display cabinet can meet the power supply requirements of the receiving card and the display panel through the main power module without the need for redundant power signals. Therefore, the transmitting box only transmits display signals to the display cabinet, which can significantly reduce the signal processing volume and computing load of the transmitting box, reduce the hardware resource occupancy rate, and improve the overall operating efficiency of the display system. At the same time, it reduces data redundancy in the signal transmission process, effectively reduces the transmission delay and distortion probability of the display signal, and thus ensures the smoothness of the display screen.

[0071] In some embodiments, the power management module 203 is further configured to generate a second request signal when the main power module 201 is abnormally powered, and send the second request signal to the transmitting box 10; the data processing module 102 of the transmitting box 10 is further configured to receive the second request signal and transmit the composite signal to the display cabinet 20 according to the second request signal; the decoding module 202 in the display cabinet 20 is configured to receive the composite signal.

[0072] For example, the power management module 203 monitors the power supply status of the main power module 201 in real time. When an abnormal power supply is detected in the main power module 201, a second request signal is generated. The second request signal is transmitted in reverse through the second port (POE port) of the display cabinet 20 to the encoding mode selection module 104 corresponding to the transmitting box 10. After receiving the second request signal, the encoding mode selection module 104 selects encoding mode two and transmits the composite signal through the POE port to the corresponding display cabinet 20. After receiving the corresponding composite signal, the decoding module 202 decodes the composite signal and separates it into a redundant power signal and a display signal. The redundant power signal is used to transmit to the POE power module 206 of the power management module 203, and the display signal is used to transmit to the receiving card 204. The receiving card 204 generates a drive signal according to the display signal, and the drive signal is used to drive the display panel 205 to display the image. After the POE power module 206 receives the redundant power signal, the power management module 203 immediately triggers the POE power module 206 to provide redundant power to the receiver card 204 and display panel 205 of the display cabinet 20, and at the same time triggers a local alarm (such as a flashing red light).

[0073] In this embodiment, the power management module of the display cabinet sends a second request signal to the transmitting box. This second request signal enables the transmitting box to confirm that the main power module of the corresponding display cabinet is experiencing a power supply abnormality. At this time, the display cabinet needs to use a redundant power signal to power the receiving card and the display panel. Therefore, the transmitting box transmits a composite signal generated by the encoding combination of the display signal and the redundant power signal to the display cabinet, so that the display cabinet can obtain the redundant power signal in a timely manner and provide redundant power supply support for the receiving card and the display panel, ensuring the stable operation of the display system.

[0074] In this embodiment, when the PoE power module is in real-time operating mode, seamless switching between the main power module 201 and the PoE power module 206 can be achieved. The switching process has no impact on the display, resulting in a good user experience. When the PoE power module operating mode is activated again in case of a main power supply failure, the energy-saving effect is even better. Both operating modes realize the upgrade of the display system from cabinet-level redundancy to screen-level redundancy, significantly reducing the total number of power supplies in the display system and saving the overall hardware cost of the display system.

[0075] In addition to the PoE power module, embodiments of this application may also use wireless power supply or solar power plus a battery as a backup power source, depending on the specific scenario, and this application does not impose any limitations on this.

[0076] In this embodiment, the main power module and POE power module of the transmitter box and part of the display cabinet can be integrated into a pluggable module for easy maintenance and upgrades.

[0077] In this embodiment, the decoding module and the receiving card in the display cabinet can also be integrated on the same PCB board, further simplifying the internal structure of the display cabinet.

[0078] This application also provides a display device, including the above-described display screen system.

[0079] The display device of this application embodiment centrally sets up the redundant power supply modules at the transmitting box end, and transmits the redundant power signals generated by the redundant power supply modules to the display cabinet as redundant power supply. There is no need to set up an independent redundant power supply in each display cabinet, which significantly reduces the number of redundant power supply configurations inside the display cabinet and reduces the overall hardware cost of the display device. At the same time, the centralized redundant power supply design facilitates power supply management and maintenance, reduces the complexity of synchronous control of multiple cabinet redundant power supplies, and improves the power supply reliability and maintainability of the entire display device.

[0080] The display device in this application embodiment is not only applicable to LED displays, but can also be extended to display systems that require highly reliable power supply, such as digital signage, video walls, and industrial control displays.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0082] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0083] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0084] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0085] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A display screen system, characterized by The sending box comprises a sending box and a plurality of display boxes, the sending box comprises a redundant power module, the redundant power module is used for generating a plurality of redundant power signals; the plurality of redundant power signals correspond one by one to the plurality of display boxes, and each redundant power signal is used for providing redundant power supply for the corresponding display box; Each display box comprises a main power module and does not comprise a redundant power component; each display box is used for controlling the main power module to supply power to the display box when the main power module supplies power normally, and switching to the corresponding redundant power signal to supply power to the display box when the main power module supplies power abnormally.

2. The display screen system of claim 1, wherein, The sending box further comprises a data processing module and a plurality of first encoding modules corresponding one by one to each display box; The data processing module is used for receiving display data, generating a plurality of display signals corresponding one by one to each display box according to the display data, and sending each display signal to the corresponding first encoding module; The redundant power module is further used for sending each redundant power signal to the corresponding first encoding module; Each first encoding module is used for receiving the corresponding display signal and the redundant power signal, encoding the corresponding display signal and the redundant power signal, generating a composite signal, and sending the composite signal to the corresponding display box.

3. The display screen system of claim 2, wherein, Each display box further comprises a decoding module, a power management module, a receiving card and a display panel; The decoding module is used for receiving the corresponding composite signal, decoding the composite signal to obtain the redundant power signal and the display signal, sending the redundant power signal to the power management module, and sending the display signal to the receiving card; The receiving card is used for driving the display panel according to the display signal; The power management module is used for detecting the power supply state of the main power module, controlling the main power module to supply power to the receiving card and the display panel when the main power module supplies power normally, and switching to the redundant power signal to supply power to the receiving card and the display panel when the main power module supplies power abnormally.

4. The display screen system of claim 3, wherein, The sending box comprises a plurality of first ports, each display box comprises a second port, the first encoding module sends the composite signal to the corresponding display box through the corresponding first port; the decoding module of the corresponding display box receives the composite signal through the second port, wherein the first port and the second port are POE ports.

5. The display screen system of claim 3, wherein, The power management module is further used for generating a first request signal when the main power module supplies power normally, and sending the first request signal to the sending box; The data processing module in the sending box is further used for receiving the first request signal, and transmitting the display signal to the display box according to the first request signal; The receiving card in the display box is used for receiving the display signal.

6. The display screen system of claim 3, wherein, The power management module is further used for generating a second request signal when the main power module supplies power abnormally, and sending the second request signal to the sending box; The data processing module in the sending box is further used for receiving the first request signal, and transmitting the display signal to the display box according to the first request signal; The receiving card in the display box is used for receiving the display signal. The data processing module of the sending box is further configured to receive the second request signal and transmit the composite signal to the display cabinet according to the second request signal. The decoding module in the display cabinet is configured to receive the composite signal.

7. The display screen system of any of claims 3-6, wherein, The power management module is further configured to acquire an output voltage of the main power module, and determine that the main power module is normally powered when the output voltage of the main power module is greater than or equal to a preset voltage. The power management module is further configured to determine that the main power module is abnormally powered when the output voltage of the main power module is less than the preset voltage.

8. The display screen system of claim 7, wherein, Each display cabinet further comprises a state indicator light, and the power management module is further configured to control the state indicator light to display a first state when the main power module is normally powered, and control the state indicator light to display a second state when the main power module is abnormally powered, wherein the first state is different from the second state.

9. The display screen system of claim 2, wherein, A plurality of display cabinets are sequentially cascaded according to a preset rule to form a display cabinet group, and each display cabinet group corresponds to a first encoding module. The first encoding module is configured to transmit the composite signal to a first display cabinet corresponding to the display cabinet group. In the display cabinet group, a previous display cabinet is configured to cascade the composite signal to a subsequent display cabinet, until all display cabinets in the display cabinet group receive the composite signal.

10. A display device, characterized by comprising: A display screen system according to any one of claims 1-9.

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