Display screen system and display equipment

Abstract

The invention is applicable to the technical field of display screen control, and provides a display screen system and display equipment, and the display screen system comprises a sending box and a plurality of display box bodies; the sending box comprises a shared power supply module; the display box body comprises a main power supply module; the sending box determines a display signal and expected use power of the display box body according to the video data signal, when the expected use power is greater than the maximum output power, the shared power supply module is controlled to output a first electric energy signal, and the first electric energy signal and the first display signal are sent to the display box body; and the display box body obtains the second electric energy signal, controls a third electric energy signal formed by combining the second electric energy signal and the first electric energy signal to supply power to the display box body, and executes display according to the first display signal. The first electric energy signal output by the shared power supply module and the second electric energy signal output by the main power supply module are used for jointly supplying power to the display box body, so that the instantaneous power supply capability of the display box body is dynamically improved, and the brightness dynamic range of the whole display screen system is further remarkably expanded.

Description

Technical Field

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

[0002] With the rapid development of display technology, High Dynamic Range (HDR) technology has become crucial for enhancing the visual performance of displays. The core of HDR technology is to expand the dynamic range of brightness in an image to reproduce the details of light and dark areas in a real scene. Currently, HDR technology dynamically adjusts the brightness of each backlight area by analyzing image content, reducing brightness in dark areas and increasing brightness in bright areas to improve contrast; or, it maps the high dynamic range image signal to the physical brightness range of the display screen to preserve as much detail as possible. However, both of these solutions rely on whether the main power module of the display cabinet can provide sufficient instantaneous power to support high brightness output. Since the maximum output power of the main power module is fixed, when a local area of ​​the image requires extremely high peak brightness, the instantaneous power driving the display panel will still exceed the carrying capacity limit of the main power module. This prevents the advantages of existing HDR technology from being fully realized, resulting in problems such as loss of highlight details, graying of the image, and decreased color saturation.

[0003] The traditional solution is to replace the main power module of each display cabinet with a higher power module and upgrade the corresponding power distribution system to match the power requirements. However, this solution is costly and complex to implement. Summary of the Invention

[0004] This application provides a display system and display device that can solve the problem of insufficient instantaneous power in local high-brightness scenes in HDR display without replacing the main power module or upgrading the power distribution system.

[0005] In a first aspect, embodiments of this application provide a display screen system, including a transmitting box and multiple display cabinets; the transmitting box includes a shared power module; each of the display cabinets includes a main power module; The transmitting box is used to receive video data signals, determine the display signal corresponding to each display cabinet and the expected power consumption corresponding to each display signal based on the video data signals, and when the expected power consumption is greater than the maximum output power of the main power module, control the shared power module to output a first power signal, and send the first power signal and the first display signal to the corresponding display cabinet, wherein the power of the first power signal is the difference between the expected power consumption and the maximum output power of the main power module; The display cabinet is used to acquire the second power signal output by the main power module, merge the second power signal and the first power signal to obtain a third power signal, control the third power signal to supply power to the display cabinet, and perform display according to the first display signal, wherein the power of the second power signal is the maximum output power of the main power module.

[0006] This embodiment of the application sets the shared power module at the transmitting box end. When the maximum output power provided by the main power module of the display cabinet is insufficient to support the display requirements of the first display signal, the shared power module provides the first power signal to the display cabinet. The first power signal and the second power signal provided by the main power module corresponding to the maximum output power are used together to power the display cabinet, thereby meeting the display requirements of the first display signal. This replaces the design in the prior art that replaces the main power module of each display cabinet with a larger power module and simultaneously upgrades the corresponding power distribution system to match the display requirements. Thus, without replacing the main power module and upgrading the power distribution system, the instantaneous power supply capability of the display cabinet is dynamically improved, the brightness dynamic range of the entire display system is significantly improved, and the problem of insufficient instantaneous power in local high-brightness scenes in HDR display is solved.

[0007] In one possible implementation of the first aspect, the transmitting box further includes a main control unit, a video analysis module, and a plurality of encoding modules corresponding one-to-one with each of the display cabinets; The main control unit is used to receive the video data signal and send the video data signal to the video analysis module; The video analysis module is used to parse the video data signal, determine the display signal corresponding to each display cabinet, determine the expected power consumption based on each display signal, and when the expected power consumption is greater than the maximum output power of the main power module, determine the power of the first power signal based on the difference between the expected power consumption and the maximum output power, generate a power replenishment command based on the power of the first power signal, and send the first display signal and the power replenishment command to the main control unit. The main control unit is also used to control the shared power module to output the first power signal according to the power replenishment command, and to send the first display signal and the first power signal to the corresponding encoding module; The encoding module is used to encode the first display signal and the first power signal to generate a composite signal, and send the composite signal to the corresponding display cabinet.

[0008] This embodiment of the application, through data interaction between the main control unit, video analysis module, shared power module, and corresponding first encoding module, enables the video analysis module to predict high instantaneous power exceeding the carrying capacity limit of the main power module. The shared power module then opens a power replenishment channel for the display cabinet, controlling it to provide supplementary power to the display cabinet as needed. By encoding and combining the first power signal and the first display signal into a composite signal, both signals are transmitted to the corresponding display cabinet via a single communication link. This eliminates the need for separate transmission lines for the first power signal and the first display 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 first power signal and the first display signal, providing timing guarantees for subsequent composite signal decoding and separation at the display cabinet end.

[0009] In one possible implementation of the first aspect, the display enclosure further includes a decoding unit, a power management module, a receiver card, and a display panel; The decoding unit is used to receive the corresponding composite signal, decode the composite signal to obtain the first display signal and the first power signal, send the first display signal to the receiving card, and send the first power signal to the power management module. The power management module is used to acquire the second power signal, merge the first power signal and the second power signal to obtain a third power signal, and control the third power signal to supply power to the receiving card and the display panel; The receiving card is used to generate a first driving signal based on the first display signal and send the first driving signal to the display panel; The display panel is used to perform display according to the first drive signal.

[0010] This embodiment of the application achieves decoding and separation of composite signals transmitted via a single link through the decoding unit of the display cabinet. After accurately separating the first display signal and the first power signal, the first display signal is directionally transmitted to the receiving card to drive the screen display, and the first power signal is directionally transmitted to the power management module through the power supply line. The power management module supplies power to the display cabinet together with the second power signal output by the main power module according to the first power signal, ensuring that the display panel receives sufficient power while receiving the first driving signal, thus ensuring the stability and accuracy of the screen display.

[0011] In one possible implementation of the first aspect, the display panel includes a plurality of display units arranged in an array, wherein the luminous brightness of each display unit is determined according to the power of the first driving signal and the third power signal.

[0012] In this embodiment, the first driving signal specifies the target brightness of the display unit, and the third power signal provides sufficient power support for the target brightness, so that the display brightness of the display unit is expanded from the display brightness corresponding to the maximum output power of the main power module to the display brightness corresponding to the power of the third power signal, thereby dynamically improving the instantaneous power supply capability of the display cabinet and significantly improving the brightness dynamic range of the entire display system.

[0013] In one possible implementation of the first aspect, the transmitting box includes a first data input interface and a plurality of first data output interfaces, wherein the first data input interface is an RJ45 interface, the first data output interface is a PoE interface, and each first data output interface corresponds one to one of the encoding modules. The main control unit receives the video data signal through the first data input interface; The encoding module sends the composite signal to the corresponding display cabinet through the corresponding first data output interface.

[0014] This application embodiment utilizes the high transmission rate, strong anti-electromagnetic interference capability, and long transmission distance of the RJ45 interface to ensure that the main control unit of the transmitting box can stably and completely receive the video data signal output by the external video source. At the same time, by utilizing the characteristic of the PoE interface to support synchronous transmission of power and data, a scheme is realized that the first display signal and the first power signal are encoded into a composite signal and then transmitted through a single link, which solves the problems of complex wiring and high labor costs in traditional schemes.

[0015] In one possible implementation of the first aspect, the display enclosure includes a second data input interface and a second data output interface, wherein the second data input interface and the second data output interface are PoE interfaces; The decoding unit of the display cabinet receives the corresponding composite signal through the second data input interface; The display cabinet sends the composite signal to the next display cabinet cascaded with it via the second data output interface.

[0016] This application embodiment utilizes the characteristic of the PoE interface to support synchronous transmission of power and data, enabling the display cabinet to receive the first display signal required for display and simultaneously obtain the first power signal transmitted to the display cabinet by the shared power module through the same link, thus solving the problems of complex wiring and high labor costs in traditional solutions.

[0017] In one possible implementation of the first aspect, the transmitting box is further configured to send a second display signal to the corresponding display cabinet when the expected power consumption is less than or equal to the maximum output power corresponding to the display cabinet; The display cabinet is used to acquire the fourth power signal output by the main power module, control the fourth power signal to power the display cabinet, and perform display according to the second display signal, wherein the power of the fourth power signal is the expected power.

[0018] In this embodiment, when the maximum output power provided by the main power module of the display cabinet is sufficient to support the display requirements of the second display signal, the transmitting box only transmits the second display signal to the display cabinet. This significantly reduces the signal processing volume and computational load of the transmitting box, lowers the hardware resource occupancy rate, and improves the overall operating efficiency of the display screen system. At the same time, it reduces data redundancy during signal transmission, effectively reduces the transmission delay and distortion probability of the second display signal, and thus ensures the smoothness of the display screen.

[0019] In one possible implementation of the first aspect, the display enclosure further includes a power management module, a receiver card, and a display panel; The receiving card is used to receive the second display signal, generate a second driving signal based on the second display signal, and send the second driving signal to the display panel; The power management module is used to acquire the fourth power signal and control the fourth power signal to supply power to the receiving card and the display panel. The display panel is used to perform display according to the second drive signal.

[0020] In this embodiment, when the maximum output power provided by the main power module is sufficient to support the display requirements of the second display signal, there is no need to activate the shared power module at the transmitting box to supplement power. The display cabinet is powered solely by the fourth power signal output by the main power module, simplifying the complexity of the power supply chain. At the same time, by directionally transmitting the first display signal to the receiving card to drive the screen display, the signal processing chain is simplified while ensuring that the display panel receives sufficient power while receiving the second driving signal, thus guaranteeing the stability and accuracy of the screen display.

[0021] In one possible implementation of the first aspect, the display panel includes a plurality of display units arranged in an array, the luminous brightness of each display unit being determined according to the power of the second driving signal and the fourth power signal.

[0022] In this embodiment, the target brightness of the display unit is clearly defined by the second driving signal, and sufficient power support required for the target brightness is provided by the fourth power signal, so that the display unit emits light accurately according to the requirements of the second driving signal, ensuring that the color reproduction and grayscale detail of the picture are highly consistent with the requirements of the video source.

[0023] Secondly, embodiments of this application provide a display device, including the display screen system described in any one of the first aspects above.

[0024] 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 shared power module; each display cabinet includes a main power module. The transmitting box is used to receive video data signals, determine the display signal corresponding to each display cabinet and the expected power consumption corresponding to each display signal based on the video data signals, and when the expected power consumption is greater than the maximum output power of the main power module, control the shared power module to output a first power signal corresponding to the supplementary power, and send the first power signal and the display signal to the corresponding display cabinet. The supplementary power is the difference between the expected power consumption and the maximum output power. The display cabinet is used to merge the second power signal output by the main power module corresponding to the maximum output power and the first power signal output by the shared power module corresponding to the supplementary power to obtain a third power signal, control the third power signal to power the display cabinet, and perform display according to the display signal.

[0025] Compared to existing technologies that replace each display cabinet with a higher-power main power module and simultaneously upgrade the corresponding power distribution system to match the power requirements, this application's display system predicts the expected power consumption of the display signal through the transmitting box. When the expected power consumption exceeds the maximum output power of the main power module, a shared power module added to the transmitting box dynamically replenishes the power of the display cabinet. Specifically, the first power signal output by the shared power module and the display signal are encoded into a composite signal and sent to the corresponding display cabinet. After decoding, the display cabinet obtains the first power signal and the display signal, and supplies power to the display cabinet based on the second power signal output by the main power module and the first power signal output by the shared power module. Thus, without replacing the main power module or upgrading the power distribution system, this application dynamically improves the instantaneous power supply capability of the display cabinet, significantly improves the dynamic range of brightness of the entire display system, and solves the problem of insufficient instantaneous power in local high-brightness scenes in HDR displays.

[0026] 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

[0027] 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.

[0028] Figure 1 This is a schematic diagram of a display screen system provided in an embodiment of this application; Figure 2 This is a schematic diagram of a transmitting box provided in an embodiment of this application; Figure 3 This is a schematic diagram of a display cabinet provided in one embodiment of this application. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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]."

[0033] 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.

[0034] 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.

[0035] With the rapid development of display technology, High Dynamic Range (HDR) technology has become crucial for enhancing the visual performance of displays. The core of HDR technology is to expand the dynamic range of brightness in an image to restore details in both bright and dark areas of a real scene. Currently, existing HDR technologies fall into two categories: one is local dimming technology, which dynamically adjusts the brightness of each backlight area by analyzing image content, reducing brightness in dark areas and brightening in bright areas to improve contrast; the other is tone mapping algorithms, which map high dynamic range image signals to the physical brightness range of the display screen to preserve details in both bright and dark areas as much as possible. However, both of these solutions rely on the main power module of the display cabinet to provide sufficient instantaneous power to support high brightness output. Since the maximum output power of the main power module is fixed, when a local area of ​​the image requires extremely high peak brightness, the instantaneous power driving the display panel will still exceed the load limit of the main power module. This prevents the advantages of existing HDR technology from being fully realized, resulting in problems such as loss of highlight details, a grayish image, and decreased color saturation.

[0036] The traditional solution is to replace the main power module of each display cabinet with a higher power module and upgrade the corresponding power distribution system to match the power requirements. However, this solution is costly and complex to implement.

[0037] Based on the above-mentioned technical problems, this application provides a display screen system, including a transmitting box and multiple display cabinets; the transmitting box includes a shared power module; each display cabinet includes a main power module; the transmitting box is used to receive video data signals, determine the display signal corresponding to each display cabinet and the expected power consumption corresponding to each display signal based on the video data signals, and when the expected power consumption is greater than the maximum output power of the main power module, control the shared power module to output a first power signal corresponding to the supplementary power, and send the first power signal and the display signal to the corresponding display cabinet; wherein, the supplementary power is the difference between the expected power consumption and the maximum output power; the display cabinet is used to merge the second power signal output by the main power module corresponding to the maximum output power and the first power signal output by the shared power module corresponding to the supplementary power to obtain a third power signal, control the third power signal to power the display cabinet, and perform display according to the display signal.

[0038] Compared to existing technologies that replace each display cabinet with a higher-power main power module and simultaneously upgrade the corresponding power distribution system to match the power requirements, this application's display system predicts the expected power consumption of the display signal through the transmitting box. When the expected power consumption exceeds the maximum output power of the main power module, a shared power module added to the transmitting box dynamically replenishes the power of the display cabinet. Specifically, the first power signal output by the shared power module and the display signal are encoded into a composite signal and sent to the corresponding display cabinet. After decoding, the display cabinet obtains the first power signal and the display signal. The third power signal, generated by combining the second power signal output by the main power module and the first power signal output by the shared power module, powers the display cabinet. Thus, without replacing the main power module or upgrading the power distribution system, this application dynamically improves the instantaneous power supply capability of the display cabinet, significantly improves the dynamic range of brightness of the entire display system, and solves the problem of insufficient instantaneous power in local high-brightness scenes in HDR displays.

[0039] See Figure 1 This is a schematic diagram of the display screen system provided in the embodiments of this application.

[0040] like Figure 1 As shown, a display screen system includes a transmitting box 10 and multiple display cabinets 20. The transmitting box 10 includes a shared power module 101, and each display cabinet 20 includes a main power module 201. The transmitting box 10 is used to receive video data signals, determine the display signal corresponding to each display cabinet 20 and the expected power consumption corresponding to each display signal based on the video data signals, and control the shared power module 101 to output a first power signal when the expected power consumption is greater than the maximum output power of the main power module. The first power signal and the first display signal are then sent to the corresponding display cabinet 20. The power of the first power signal is the difference between the expected power consumption and the maximum output power. The display cabinet 20 is used to acquire a second power signal output by the main power module 201, merge the second power signal output by the main power module 201 and the first power signal output by the shared power module 101 to obtain a third power signal, and control the third power signal to power the display cabinet 20. The display is then executed according to the first display signal. The power of the second power signal is the maximum output power of the main power module 201.

[0041] For example, the display system adopts such as Figure 1The splicing architecture shown consists of a transmitter box 10 and multiple display cabinets 20. The transmitter box 10, as the core control unit of the display system, is deployed above the multiple display cabinets 20 and undertakes key functions such as video data signal processing, display signal distribution, power calculation, and whether to trigger dynamic power replenishment. The multiple display cabinets 20, as display core units, are spliced ​​in an array below the transmitter box 10 to form the main body of the display screen. All display cabinets 20 adopt uniform size specifications, interface definitions, and power supply standards, providing a hardware foundation for arbitrary combination and splicing, and meeting the size requirements of different display scenarios.

[0042] In terms of connection method, the transmitting box 10 and the display cabinet 20, as well as adjacent display cabinets 20, are all connected via POE interface. When it is necessary to start the transmitting box 10 to replenish the display cabinet 20, the POE interface transmits both display signals and power signals; when it is not necessary to start the transmitting box 10 to replenish the display cabinet 20, the POE interface is only used as a display signal transmission channel.

[0043] In terms of data processing, the transmitting box 10 centrally receives the complete video data signal from the outside through the first data input interface (such as the RJ45 interface). After internal data processing, the complete video signal is accurately decomposed into display signals that are adapted to each display cabinet 20, so as to distribute the display signals to the corresponding display cabinet 20. In this embodiment, before distributing the display signal to the corresponding display cabinet 20, the transmitting box 10 first analyzes the key parameters of the display signal, including brightness level, pixel activation density, and refresh rate. It then uses a preset algorithm to accurately calculate the expected power required for each display cabinet 20 to meet display requirements. This expected power is the highest instantaneous power required for the display cabinet 20 to display the corresponding image. Subsequently, the transmitting box 10 compares this expected power with the maximum output power of the main power module 201 of the corresponding display cabinet 20 in real time to determine whether the main power module 201 alone can handle the highest instantaneous power corresponding to the display signal. If the comparison result shows that the expected power is greater than the maximum output power of the main power module, it indicates that the main power module 201 alone cannot meet the display requirements of the first display signal. In this case, the display signal corresponding to the display scenario is used as the first display signal. Specifically, the maximum output power of the main power module 201 is insufficient to support the display units in the display panel to achieve the target brightness and refresh rate required by the first display signal, which may lead to brightness decay, flickering, stuttering, or even abnormalities in the drive circuit due to insufficient power supply.

[0044] In order to solve the above problems, this embodiment needs to activate the shared power module 101 of the transmitting box 10 to provide targeted supplementary power to the display cabinet 20. The supplementary power output by the shared power module 101 (i.e., the first power signal) and the power output by the main power module 201 of the display cabinet 20 (i.e., the second power signal) are combined by the power management module 203 inside the display cabinet 20. The two power sources are integrated into a third power signal with a total power equal to the expected power usage. The third power signal supplies power to the display cabinet 20, which can meet the display requirements of the first display signal.

[0045] For example, the shared power module 101 is a PoE power bank, which is a centralized high-power DC power system that serves as the shared energy storage center for the entire display system, providing supplementary power for all display cabinets 20 to dynamically replenish their power. The PoE power bank can be a built-in module of the transmitter box 10 or an independent external device connected to the transmitter box 10 via a dedicated interface.

[0046] Continuing the example above, when the shared power module 101 is activated to dynamically replenish power to the display cabinet 20, the power of the first power signal is determined based on the difference between the expected power usage and the maximum output power of the main power module 201. A power replenishment command containing the power of the first power signal is sent to the POE power battery, controlling the POE power battery to output a first power signal with power matching the first power signal. Then, the transmitting box 10 synchronously transmits the first display signal and the first power signal to the corresponding display cabinet 20. The display cabinet 20 then merges the first power signal with the second power signal output by the main power module 201 (the power of the second power signal corresponds to the maximum output power of the main power module 201) through the internal power management module 203 to obtain a third power signal. The power management module 203 controls the third power signal to supply power to the display cabinet 20 and its entire internal structure, ensuring that the display panel presents the corresponding image according to the display requirements of the first display signal. In this embodiment, since the third power signal provides sufficient power support, the display panel 202 can display a higher brightness than when the main power module 201 is powered alone. Moreover, the picture remains clear and stable under high brightness and high refresh rate operation, without problems such as brightness decay or screen flicker caused by insufficient power supply.

[0047] In some embodiments, such as Figure 2As shown, the transmitting box 10 also includes a main control unit 102, a video analysis module 103, and multiple encoding modules 104 corresponding to each display cabinet 20. The main control unit 102 is used to receive video data signals and send them to the video analysis module 103. The video analysis module 103 is used to analyze the video data signals, determine the display signal corresponding to each display cabinet 20, and determine the expected power consumption based on each display signal. When the expected power consumption is greater than the maximum output power of the main power module 201, the corresponding display signal is the first display signal. The power of the first power signal is determined by the difference between the expected power and the maximum output power. A power replenishment command is generated based on the power of the first power signal, and the first display signal and the power replenishment command are sent to the main control unit 102. The main control unit 102 is also used to control the shared power module 101 to output a first power signal corresponding to the power of the first power signal according to the power replenishment command, and send the first display signal and the first power signal to the corresponding encoding module 104. The encoding module 104 is used to encode the display signal and the first power signal to generate a composite signal, and send the composite signal to the corresponding display cabinet 20.

[0048] For example, the main control unit 102 first receives externally input video data signals through a first data input interface (such as a standardized video interface like an RJ45 interface, HDMI interface, SDI interface, or DP interface). The source of this video data signal can include, but is not limited to, devices with video output capabilities such as computer hosts, high-definition players, video servers, or cameras. The signal format can specifically adopt industry-standard formats such as HDMI (High-Definition Multimedia Interface), SDI (Serial Digital Interface), DP (Display Port), or DVI to ensure compatibility with various external video source devices and meet the video input requirements of different scenarios (such as conference presentations, outdoor advertising, or monitoring screen display). Then, the main control unit 102 forwards the video data signal to the video analysis module 103.

[0049] After receiving the video data signal, the video analysis module 103 performs frame-by-frame analysis of the video data signal and calculates the expected power required by each display cabinet 20 to display the corresponding frame (i.e., the maximum instantaneous power required by the display cabinet 20 to meet the display requirements). Specifically, the video analysis module 103 pre-stores the splicing array information of all display cabinets 20 (such as the number of horizontal display cabinets, the number of vertical display cabinets, the physical resolution of each display cabinet, and the coordinate range of the display area, etc.). Based on this splicing array information, each frame of video is decomposed into sub-screen areas corresponding to each display cabinet 20 according to the splicing division rules of the display cabinets 20. Then, for each sub-screen area of ​​each frame of video, the video analysis module 103 extracts the core parameters that affect the display power one by one. Among them, the core parameters include, for example, pixel activation density, brightness level parameters, color complexity, and refresh rate related parameters. Then, the extracted key parameters of the sub-screen area are substituted into the power calculation model preset by the video analysis module 103, and the expected power used by each display cabinet 20 when displaying the sub-screen frame is obtained through multi-dimensional parameter weighted calculation.

[0050] For each frame of video, after the video analysis module 103 calculates the expected power consumption of all display cabinets 20, for each display cabinet 20, it compares the expected power consumption with the maximum output power of the main power module 201. When the expected power consumption is less than or equal to the maximum output power of the main power module 201, it is determined that the main power module 201 alone can fully meet the current display power requirements of the display cabinet 20, and there is no need to activate the shared power module 101 for supplementary power. When the expected power consumption is greater than the maximum output power of the main power module 201, it is determined that the main power module 201 alone cannot support the current display requirements. At this time, the video analysis module 103 generates a supplementary power command based on the current display requirements. The supplementary power command includes the difference between the expected power consumption and the maximum output power. The video analysis module 103 sends the supplementary power command and the corresponding first display signal to the main control unit 102.

[0051] The main control unit 102 will trigger the shared power module 101 to provide the required supplementary power to the display cabinet 20 only after receiving the power replenishment command. That is, it controls the shared power module 101 to output the first power signal and send the first display signal and the first power signal to the corresponding encoding module 104.

[0052] The encoding module 104 receives the first display signal and the first power signal, and fuses them into a composite signal using a preset encoding algorithm. Then, the encoding module 104 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, eliminating the need for separate transmission lines for the first display signal and the first power signal. This simplifies the wiring architecture of the display system and reduces the complexity and labor costs of wiring construction. Simultaneously, single-link transmission ensures the synchronization of the first display signal and the first power signal, providing timing assurance for the subsequent decoding and separation of the composite signal at the display cabinet end.

[0053] In some embodiments, such as Figure 3 As shown, the display enclosure 20 also includes a decoding unit 202, a power management module 203, a receiving card 204, and a display panel 205. The decoding unit 202 is used to receive the corresponding composite signal, decode the composite signal to obtain a first display signal and a first power signal, send the first display signal to the receiving card 204, and send the first power signal to the power management module 203. The power management module 203 is used to acquire a second power signal, merge the first power signal and the second power signal to obtain a third power signal, and control the third power signal to supply power to the receiving card 204 and the display panel 205. The receiving card 204 is used to generate a first drive signal according to the first display signal and send the first drive signal to the display panel 205. The display panel 205 is used to perform display according to the first drive signal.

[0054] For example, such as Figure 3 As shown, after the encoding module 104 sends the composite signal to the corresponding display cabinet 20, the decoding unit 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 encoding module 104, the composite signal is separated into an independent first display signal and a first power signal. The preset encoding algorithm and the preset decoding algorithm are inverse operations of each other. After separating the first display signal and the first power signal, the decoding unit 202 transmits the first display signal to the receiving card 204 and the first power signal to the power management module 203, enabling the power management module 203 to acquire the first power signal.

[0055] The power management module 203 establishes electrical connections with the main power module 201, the decoding unit 202, the receiving card 204, and the display panel 205 respectively. The power management module 203 synchronously acquires the second power signal output by the main power module 201 (the power of the second power signal is equal to the maximum output power of the main power module 201) and the first power signal transmitted by the decoding unit 202. The power of the second power signal is the maximum output power of the main power module. The first power signal and the second power signal are combined to generate a third power signal whose total power matches the energy consumption requirement of the expected power usage corresponding to the first display signal. The third power signal is then used to power the receiving card 204 and the display panel 205.

[0056] After receiving the first display signal, the receiving card 204 parses, performs frame synchronization processing, and performs pixel mapping conversion on the first display signal based on a preset display control protocol (such as SPI, LVDS, or a custom display protocol). It then generates a first 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 rate). This first driving signal is then sent to the display panel 205. Upon receiving the first driving signal, the display panel 205, supported by the power of a third electrical signal, controls multiple display units on the display panel 205 to emit light according to the first driving signal, thereby achieving stable display of the target image.

[0057] This embodiment of the application achieves decoding and separation of composite signals transmitted via a single link through the decoding unit of the display cabinet. After accurately separating the first display signal and the first power signal, the first display signal is directionally transmitted to the receiving card to drive the screen display, and the first power signal is directionally transmitted to the power management module through the power supply line. The power management module supplies power to the display cabinet together with the second power signal output by the main power module according to the first power signal, ensuring that the display panel receives sufficient power while receiving the first driving signal, thus ensuring the stability and accuracy of the screen display.

[0058] In some embodiments, the display panel 205 includes a plurality of display units arranged in an array, and the luminous brightness of each display unit is determined according to the power of a first driving signal and a third power signal.

[0059] In this embodiment, the display panel 205 of the display cabinet 20 adopts an array-style arrangement structure, which is composed of multiple independent display units spliced ​​together according to a preset row and column rule. Each display unit is the smallest light-emitting unit, and its actual light-emitting brightness is determined by two factors: first, the first driving signal transmitted by the receiving card 204 (including brightness control instructions and grayscale level information, etc.); and second, the power of the third power signal output by the power management module 203. Among them, the first driving signal determines the target brightness value, and the power of the third power signal meets the energy consumption requirements corresponding to the target brightness value, ensuring that the first driving signal can be effectively executed and avoiding brightness attenuation or failure to reach the target brightness value due to insufficient power supply.

[0060] In a specific example, assuming the display unit is a Mini LED chip, the relationship between its brightness and driving current is: Driving current I (mA) = Target brightness L (cd / m²) × Coefficient K (a fixed value determined by the chip specifications; in this example, K = 0.02mA). The MiniLED lamp bead has a rated operating voltage of 3V (a fixed voltage value under normal lighting conditions, which does not change with brightness). When the first display signal requires a target brightness L = 2000 cd / m², the required driving current is calculated as I² = L² × K = 2000 cd / m² × 0.02 mA. m² / cd = 40mA = 0.04A, corresponding to an actual power consumption P = 3V × 0.04A = 0.12W. If the maximum output power of the main power module is only 0.08W (which cannot meet the 0.12W requirement), then the video analysis module calculates the power of the first power signal as 0.12W - 0.08W = 0.04W, and controls the shared power module to output 0.04W of supplementary power. Ultimately, the main power supply provides 0.08W (corresponding to 26.7mA current), and the supplementary power supply provides 0.04W (corresponding to 13.3mA current), working together to output a 40mA drive current, allowing the display unit to accurately reach a brightness of 2000cd / m².

[0061] In this embodiment, the first driving signal specifies the target brightness of the display unit, and the third power signal provides sufficient power support for the target brightness, so that the display brightness of the display unit is expanded from the display brightness corresponding to the maximum output power of the main power module to the display brightness corresponding to the power of the third power signal, thereby dynamically improving the instantaneous power supply capability of the display cabinet and significantly improving the brightness dynamic range of the entire display system.

[0062] In some embodiments, the transmitting box 10 is further configured to send a second display signal to the corresponding display cabinet 20 when the expected power usage is less than or equal to the maximum output power corresponding to the display cabinet; the display cabinet 20 is configured to obtain the fourth power signal output by the main power module 201, control the fourth power signal to supply power to the display cabinet 20, and perform display according to the second display signal, wherein the power of the fourth power signal is the expected power usage.

[0063] For example, the transmitting box 10 compares the expected power usage with the maximum output power of the main power module 201 of the corresponding display cabinet 20 in real time to determine whether the main power module 201 alone can handle the highest instantaneous power corresponding to the display signal. If the comparison result is that the expected power usage is less than or equal to the maximum output power of the main power module, it means that the main power module 201 alone can meet the display requirements of the second display signal. At this time, the display signal corresponding to the display scenario is used as the second display signal, and the PoE link is used as the data transmission channel to send the second display signal to the corresponding display cabinet 20. The display cabinet 20 controls the fourth power signal output by the main power module 201 (the power of the fourth power signal corresponds to the power requirement in the second display signal) through the internal power management module 203 to power the display cabinet 20 and its entire internal structure, ensuring that the display panel 205 presents the corresponding image according to the display requirements of the second display signal.

[0064] In this embodiment, since the maximum output power provided by the main power module of the display cabinet is sufficient to support the display requirements of the second display signal, the transmitting box only transmits the second display signal 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 screen system; at the same time, it reduces data redundancy in the signal transmission process, effectively reduces the transmission delay and distortion probability of the second display signal, and thus ensures the smoothness of the display screen.

[0065] In some embodiments, the display housing 20 further includes a power management module 203, a receiver card 204, and a display panel 205; the receiver card 204 is used to receive a second display signal, generate a second driving signal according to the second display signal, and send the second driving signal to the display panel 205; the power management module 203 is used to acquire a fourth power signal and control the fourth power signal to supply power to the receiver card 204 and the display panel 205; the display panel 205 is used to perform display according to the second driving signal.

[0066] After receiving the second display signal, the receiving card 204 parses, performs frame synchronization processing, and performs pixel mapping conversion on the first display signal based on a preset display control protocol (such as SPI, LVDS, or a custom display protocol). It then generates a second 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 rate). The first driving signal is then sent to the display panel 205. Upon receiving the first driving signal, the display panel 205, supported by the power of the fourth electrical signal, controls multiple display units on the display panel 205 to emit light according to the second driving signal, achieving stable display of the target image.

[0067] In this embodiment, when the maximum output power provided by the main power module is sufficient to support the display requirements of the second display signal, there is no need to activate the shared power module at the transmitting box to supplement power. The display cabinet is powered solely by the fourth power signal output by the main power module, simplifying the complexity of the power supply chain. At the same time, by directionally transmitting the first display signal to the receiving card to drive the screen display, the signal processing chain is simplified while ensuring that the display panel receives sufficient power while receiving the second driving signal, thus guaranteeing the stability and accuracy of the screen display.

[0068] In some embodiments, the display panel 205 includes a plurality of display units arranged in an array, and the luminous brightness of each display unit is determined according to the power of the second driving signal and the fourth power signal.

[0069] In this embodiment, the display panel 205 of the display cabinet 20 also adopts an array-style arrangement structure, which is composed of multiple independent display units (such as Mini LED beads, Micro LED beads, OLED pixel units, etc.) spliced ​​according to a preset row and column rule. Each display unit, as the smallest light-emitting unit, is determined by two factors: first, the second driving signal transmitted by the receiving card 204 (including brightness control instructions, grayscale level information, light emission timing parameters, etc.); and second, the power of the fourth power signal output by the power management module 203. Among them, the second driving signal specifies the target brightness value of the display unit, which is suitable for the needs of low-power display scenarios (such as low-brightness static images, regular dynamic images, or ordinary grayscale images, etc.); the power of the fourth power signal is precisely matched with the energy consumption requirement corresponding to the target brightness value. It is dynamically output by the main power module 201 according to the expected power consumption of the second display signal. Without the need for the shared power module 101 to supplement the power, it can ensure that the second driving signal can be effectively executed, avoiding energy waste caused by excessive power supply or abnormal brightness caused by insufficient power supply.

[0070] In a specific example, still taking Mini LED chips as the display unit, the relationship between brightness and driving current remains consistent: Driving current I (mA) = Target brightness L (cd / m²) × Coefficient K (a fixed value, determined by the chip specifications; in this example, K = 0.02mA). The rated operating voltage is 3V (fixed). When the second display signal requires a target brightness L = 800 cd / m², the required driving current is calculated as I = 800 cd / m² × 0.02 mA based on the relationship between brightness and current. m² / cd = 16mA = 0.016A, corresponding to actual power consumption P = rated voltage U × drive current I = 3V × 0.016A = 0.048W. If the maximum output power of the main power module 201 of the display cabinet 20 is 0.08W (greater than the actual power consumption of 0.048W), then the main power module 201 does not need to output the maximum power consumption, but dynamically adjusts the output power to generate a fourth power signal (power = 0.048W) that precisely matches the actual power consumption. At this time, the drive current provided by the fourth power signal to the display unit is 0.048W ÷ 3V = 0.016A = 16mA, which exactly meets the requirement corresponding to the target brightness L = 800cd / m². The display unit can accurately present this brightness, and there is no excess energy loss during operation.

[0071] If the target brightness of the second display signal changes dynamically (e.g., from 800 cd / m² to 1200 cd / m²), the receiver card 204 will synchronously update the grayscale level parameters of the second drive signal. The video analysis module calculates the corresponding expected power consumption = 3V × (1200 × 0.02mA) = 3V × 0.024A = 0.072W (0.072W is still ≤ the maximum output power of the main power supply 0.08W). The main power supply module 201 then dynamically adjusts the power of the fourth power signal to 0.072W, providing a 24mA drive current to ensure that the brightness of the display unit can follow the changes in the drive signal in real time, achieving a smooth display with natural transition between light and dark.

[0072] In this embodiment, under normal scenarios where the maximum output power of the main power module 201 is sufficient to support the display requirements, the precise linkage between the second driving signal and the fourth power signal avoids the energy waste caused by the fixed maximum output power of the main power supply in traditional solutions, and ensures that the brightness of the display unit is highly consistent with the target requirements. At the same time, there is no need for the shared power module to participate in the power replenishment, which simplifies the power supply link and signal processing flow, reduces the system operation complexity and failure risk, and takes into account the energy saving, stability and accuracy of conventional display scenarios.

[0073] In some embodiments, the transmitting box includes a first data input interface and multiple first data output interfaces. The first data input interface is an RJ45 interface, and the first data output interface is a PoE interface. Each first data output interface corresponds to one encoding module. The main control unit receives video data signals through the first data input interface. The encoding module sends the composite signal to the corresponding display cabinet through the corresponding first data output interface.

[0074] For example, the transmitting box includes a first data input interface and multiple first data output interfaces. Since the RJ45 interface has advantages such as high transmission rate, strong anti-interference capability, and long transmission distance, the first data input interface in this embodiment is an RJ45 interface. Since the PoE interface has the core characteristic of synchronous power and data transmission, it can simultaneously carry data signals (first display signals) and power signals (first power signals) through a single standard network cable; therefore, the first data output interface in this embodiment is a PoE interface. Each first data output interface corresponds one-to-one with an encoding module inside the transmitting box 10. When the display cabinet needs power replenishment, the encoding module receives the first display signal transmitted by the main control unit 102 and the first power signal output by the shared power module 101, integrates the two signals into a composite signal through its internal encoding circuit, and then sends it to the corresponding display cabinet through the corresponding PoE interface. If the display cabinet does not need power replenishment, the encoding module only receives the second display signal transmitted by the main control unit and sends it directly to the corresponding display cabinet through the PoE interface. In this case, the PoE interface only undertakes data transmission, and the display cabinet is independently powered by its own main power module.

[0075] In some embodiments, the display cabinet includes a second data input interface and a second data output interface, wherein the second data input interface and the second data output interface are PoE interfaces; the decoding unit of the display cabinet receives the corresponding composite signal through the second data input interface; the display cabinet sends the composite signal to the next display cabinet cascaded with the display cabinet through the second data output interface.

[0076] For example, the display cabinet includes a second data input interface and a second data output interface. Both the second data input interface and the second data output interface adopt the PoE interface. The core function of the second data input interface is to receive the composite signal (including the first display signal and the first power signal) transmitted by the previous level device (transmitter box 10 or the previous cascaded display cabinet). The core function of the second data output interface is to forward the received composite signal to the next cascaded display cabinet, so as to realize the transmission of composite signal between multiple display cabinets.

[0077] This application embodiment utilizes the characteristic of the PoE interface to support synchronous transmission of power and data, enabling the display cabinet to receive the first display signal required for display and simultaneously obtain the first power signal transmitted to the display cabinet by the shared power module through the same link, thus solving the problems of complex wiring and high labor costs in traditional solutions.

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

[0079] The display device in this application embodiment predicts the expected power consumption of the display signal through the transmitting box. When the expected power consumption exceeds the maximum output power of the main power module, dynamic power replenishment can be achieved by adding a shared power module at the transmitting box end. Specifically, the first power signal corresponding to the replenished power output by the shared power module and the display signal are encoded to generate a composite signal and sent to the corresponding display cabinet. After decoding, the display cabinet obtains the first power signal and the display signal, and supplies power to the display cabinet together according to the second power signal output by the main power module and the first power signal output by the shared power module. Thus, without replacing the main power module and upgrading the power distribution system, this application dynamically improves the instantaneous power supply capability of the display cabinet, significantly improves the dynamic range of brightness of the entire display system, and solves the problem of insufficient instantaneous power in local high-brightness scenes in HDR display.

[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 and a plurality of display boxes are included; the sending box includes a shared power module; each display box includes a main power module; The sending box is used for receiving a video data signal, determining a display signal corresponding to each display box and an expected use power corresponding to each display signal according to the video data signal, and when the expected use power is greater than the maximum output power of the main power module, controlling the shared power module to output a first electric energy signal, and sending the first electric energy signal and a first display signal to the corresponding display box, wherein the power of the first electric energy signal is the difference between the expected use power and the maximum output power of the main power module; The display box is used for obtaining a second electric energy signal output by the main power module, combining the second electric energy signal and the first electric energy signal to obtain a third electric energy signal, and controlling the third electric energy signal to supply power to the display box, and performing display according to the first display signal, wherein the power of the second electric energy signal is the maximum output power of the main power module.

2. The display screen system of claim 1, wherein, The sending box further includes a master control unit, a video analysis module, and a plurality of encoding modules corresponding to each display box; The master control unit is used for receiving the video data signal and sending the video data signal to the video analysis module; The video analysis module is used for analyzing the video data signal, determining a display signal corresponding to each display box, determining an expected use power corresponding to each display signal, and when the expected use power is greater than the maximum output power of the main power module, determining the power of the first electric energy signal according to the difference between the expected use power and the maximum output power, generating a power supplement instruction according to the power of the first electric energy signal, and sending the first display signal and the power supplement instruction to the master control unit; The master control unit is further used for controlling the shared power module to output the first electric energy signal according to the power supplement instruction, and sending the first display signal and the first electric energy signal to the corresponding encoding module; The encoding module is used for encoding the first display signal and the first electric energy signal to generate a composite signal, and sending the composite signal to the corresponding display box.

3. The display screen system of claim 2, wherein, The display box further includes a decoding unit, a power management module, a receiving card, and a display panel; The decoding unit is used for receiving the corresponding composite signal, decoding the composite signal to obtain the first display signal and the first electric energy signal, sending the first display signal to the receiving card, and sending the first electric energy signal to the power management module; The power management module is used for obtaining the second electric energy signal, combining the first electric energy signal and the second electric energy signal to obtain a third electric energy signal, and controlling the third electric energy signal to supply power to the receiving card and the display panel; The receiving card is used for generating a first driving signal according to the first display signal, and sending the first driving signal to the display panel; The display panel is used for performing display according to the first driving signal.

4. The display screen system of claim 3, wherein, The display panel comprises a plurality of arrayed display units, and the luminous brightness of each display unit is determined according to the power of the first driving signal and the third electric energy signal.

5. The display screen system of claim 2, wherein, The sending box comprises a first data input interface and a plurality of first data output interfaces, the first data input interface is an RJ45 interface, and the first data output interfaces are POE interfaces, each first data output interface corresponds to one encoding module; The main control unit receives the video data signal through the first data input interface; The encoding module sends the composite signal to the corresponding display box through the corresponding first data output interface.

6. The display screen system of claim 3, wherein, The display box comprises a second data input interface and a second data output interface, and the second data input interface and the second data output interface are POE interfaces; The decoding unit of the display box receives the corresponding composite signal through the second data input interface; The display box sends the composite signal to the next display box connected in cascade through the second data output interface.

7. The display screen system of claim 1, wherein, The sending box is further used for sending a second display signal to the corresponding display box when the expected use power is less than or equal to the maximum output power of the display box. The display box is used for obtaining a fourth electric energy signal output by the main power module, controlling the fourth electric energy signal to supply power to the display box, and performing display according to the second display signal, wherein the power of the fourth electric energy signal is the expected use power.

8. The display screen system of claim 7, wherein, The display box further comprises a power management module, a receiving card and a display panel. The receiving card is used for receiving the second display signal, generating a second driving signal according to the second display signal, and sending the second driving signal to the display panel. The power management module is used for obtaining the fourth electric energy signal and controlling the fourth electric energy signal to supply power to the receiving card and the display panel. The display panel is used for performing display according to the second driving signal.

9. The display screen system of claim 8, wherein, The display panel comprises a plurality of arrayed display units, and the luminous brightness of each display unit is determined according to the power of the second driving signal and the fourth electric energy signal.

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

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