LED display control card and display device
By using an LED display control card with multiple universal interfaces and open protocols, the problems of high cost and poor compatibility of LED all-in-one machines have been solved, achieving the effects of multi-scenario applicability and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI YINGHUO ZHIXIAN TECH CO LTD
- Filing Date
- 2026-03-03
- Publication Date
- 2026-06-09
AI Technical Summary
Existing LED all-in-one machines are expensive, difficult to debug and maintain, and hard to adapt to diverse application scenarios. Their interface types and function definitions are limited and cannot be directly adapted to the simple interface architecture of LCD displays.
It adopts an LED display control card, which includes a data processing module, a video and image processing unit, a timing control module, a microprocessor, and a variety of general-purpose interfaces. It abandons proprietary protocols, supports multiple device interfaces and open protocols, reduces hardware costs, and enhances compatibility.
It significantly reduces equipment costs and operational complexity, supports multiple application scenarios, allows users to choose playback devices according to their needs, is compatible with third-party control systems, and is suitable for various scenarios such as meetings, homes, and advertising.
Smart Images
Figure CN122177041A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display technology, and more specifically, to an LED display control card and display device. Background Technology
[0002] With the rapid development of LED (light-emitting diode) display technology, LED displays have gradually gained market acceptance due to their advantages such as high brightness, long lifespan, borderless design, and flexible size splicing. They are widely used in conference rooms, entrance screens, monitoring rooms, urban transportation, and other occasions. Based on their operational and usage requirements, LED screens often appear in these scenarios as LED all-in-one units. However, existing LED all-in-one units typically employ a control architecture with built-in Windows or Android operating systems, integrating the sending function with the conferencing and playback software onto the same hardware platform. This type of solution requires high-performance processors, large-capacity storage, and complex peripherals, resulting in high overall equipment costs. Furthermore, manufacturers generally use proprietary standards for signal transmission, configuration protocols, and software interfaces, increasing the difficulty of system debugging and maintenance, and preventing users from flexibly replacing or expanding front-end playback devices. In addition, traditional LED all-in-one units designed for office and meeting scenarios have limited interface types and functional definitions, making it difficult to directly adapt to diverse application needs such as home use, advertising, and rental, severely restricting product functionality and applications.
[0003] While some LCD solutions achieve "plug-and-play" functionality through standard video interfaces, LED displays, due to fundamental differences in pixel arrangement, driving methods, and brightness adjustment mechanisms compared to LCD panels, cannot directly utilize the simple interface architecture of LCD displays. This results in significant shortcomings for LED all-in-one systems in terms of cost control, scenario compatibility, and integration with third-party devices.
[0004] Therefore, there is an urgent need for an LED display device that can be connected to a variety of devices and is compatible with a variety of scenarios. Summary of the Invention
[0005] The purpose of this invention is to provide an LED display control card and display device, which aims to reduce equipment costs and meet the needs of various application scenarios.
[0006] According to one aspect of the present invention, an LED display control card is provided, comprising: a data processing module having a video and image processing unit; a video input interface for receiving external video signals, the video input interface being connected to the video and image processing unit of the data processing module; a first output interface for connecting to an LED display screen; a timing control module connected between the data processing module and the first output interface, the timing control module being used to provide drive signals to the LED display screen; and a microprocessor connected to the data processing module and the timing control module; wherein the microprocessor pre-stores parameter configuration information of the LED display screen corresponding to the LED display control card, the data processing module scaling and adjusting the resolution of the received external video signal according to the parameter configuration information to obtain a display panel matching signal, and the timing control module segmenting the display panel matching signal according to the parameter configuration information to form corresponding drive signals to drive the LED display screen.
[0007] The aforementioned display control card also includes an external storage device interface, which is connected to the data reading unit in the data processing module. The external storage device interface is used to access an external storage device, and the data reading unit reads video data and / or system firmware stored in the external storage device for display or system firmware updates.
[0008] The aforementioned display control card further includes a second output interface for connecting a display screen with a high-definition multimedia interface; the first output interface and the second output interface are connected to the data processing module via a switching module; the timing control module is located between the switching module and the first output interface; the microprocessor can detect the connection status of the first output interface and the second output interface, and control the switching module to output a display panel matching signal to the first output interface and / or the second output interface.
[0009] Optionally, the external storage device interface includes any one of a USB TYPE-A interface, a Micro-USB interface, and a USB TYPE-C interface.
[0010] Optionally, the video input interface includes at least one of a high-definition multimedia interface and a display interface.
[0011] Optionally, it also includes a parameter configuration interface connected to the microprocessor, the parameter configuration interface being used to interact with a host computer to obtain and adjust the parameter configuration information.
[0012] Optionally, the first output interface is used to connect to an LED display screen, and the second output interface is a high-definition multimedia output interface.
[0013] Optionally, the data processing module further includes an audio processing unit connected to an audio output interface. The audio processing unit extracts audio data from the external video signal received by the video input interface and outputs it through the audio output interface.
[0014] Optionally, the system also includes a brightness sensor interface connected to the microprocessor, the brightness sensor interface being used to receive an ambient brightness signal, and the microprocessor adjusting the brightness of the LED display screen based on the ambient brightness signal.
[0015] According to another aspect of the present invention, an LED display device is provided, comprising: an LED display screen, which is composed of multiple LED modules spliced together; an LED display control card, which is connected to the LED display screen and drives it to display; wherein the LED display control card receives external video source signals through a video input interface, and drives the LED display screen to display images through a first output interface after passing through the data processing module and the timing control module.
[0016] In the aforementioned display device, the plurality of LED modules are connected in a linear or serpentine series structure, and the LED display control card is connected to the first LED module.
[0017] The aforementioned display device also includes a remote control or control button board connected to the LED display control card, used to realize at least one of the functions of screen display menu adjustment, local playback control, and firmware upgrade.
[0018] The LED display control card and display device provided by this invention abandon the Windows or Android operating system and the proprietary protocols customized by various manufacturers required by traditional LED all-in-one machines. This application adopts a variety of general interfaces and open protocols to enhance external compatibility. Moreover, this application does not require a complex operating system, which not only significantly reduces hardware costs and operational complexity, but also allows users to choose the corresponding front-end playback device according to their own needs, such as set-top boxes, advertising control boxes, etc., or use USB flash drives for local playback. It not only reduces the complexity of the LED display control card and greatly reduces equipment costs, but also has basic playback, OSD, scaling and sending functions. It can be flexibly matched with playback sources, is compatible with third-party control systems, and is applicable to a variety of scenarios to meet the needs of users in different scenarios. Attached Figure Description
[0019] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings.
[0020] Figure 1 A schematic diagram of an LED display device according to an embodiment of the present invention is shown;
[0021] Figure 2 This diagram shows a module schematic of an LED display control card according to an embodiment of the present invention. Detailed Implementation
[0022] The present invention will now be described in more detail with reference to the accompanying drawings. To facilitate understanding of this application, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application may be implemented in different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.
[0023] References to "one embodiment" or "some embodiments" as described 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. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.
[0024] In the description of this application, the words "exemplary" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments. "And / or" in this document describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. "Connection" describes a connection relationship between related objects. For example, A and B are connected, which can indicate a direct connection between A and B, or an indirect connection between A and B through other devices / units / modules. "Multiple" refers to two or more. Furthermore, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first," "second," etc., are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that "first," "second," etc., do not necessarily imply differences.
[0025] Furthermore, the same reference numerals in the figures denote the same or similar structures, thus repeated descriptions of them will be omitted. That is, the various parts in this specification are described using a combination of parallel and progressive methods, with each part focusing on its differences from the others. Similar or identical parts can be referred to interchangeably. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings in this application are for illustrating relative positional relationships only and do not represent actual scale.
[0026] This application describes many specific details of the invention, such as the specific structure, dimensions, connection relationships, and techniques of the modules, in order to provide a clearer understanding of the invention. However, as those skilled in the art will understand, the invention may be implemented without following these specific details.
[0027] This invention can be presented in various forms, some of which will be described below.
[0028] Figure 1 This diagram illustrates an LED display device according to an embodiment of the present invention. The LED display device includes an LED display screen 100 and an LED display control card 200. The LED display screen 100 is, for example, composed of multiple LED modules spliced together. Specifically, in this embodiment, the LED display screen 100 is composed of 25 LED modules arranged in a 5x5 array, from 1-1 to 1-25. The LED modules 1-1 to 1-25 are sequentially connected to form a... Figure 1 The serpentine serial structure shown also includes an LED display control card 200 on the LED module 1-1. The LED display control card 200 is matched with the LED display screen 100 and connected to the first LED module 1-1. The LED display control card 200 also contains configuration information corresponding to the LED display screen 100. The LED display control card 200 is equipped with a variety of internationally universal interfaces, such as a High Definition Multimedia Interface (HDMI) interface, a USB interface, and a Type-C interface. The corresponding signals can be provided to the LED display control card 200 through the above universal interfaces, and the LED display screen is driven by the LED display control card.
[0029] Furthermore, the LED display device may also include a control panel, a brightness sensor, and a remote control. The control panel and brightness sensor are connected to the LED display control card 200. The brightness sensor can, for example, acquire ambient brightness to adjust the brightness of the LED display accordingly. The LED display device also has an OSD (On-Screen Display) function, which can overlay and synchronously display the operating parameters, operation menus, and prompts of the LED display device onto the original video or image screen. With the remote control or control panel equipped with push buttons and / or knobs, convenient operation such as function selection and parameter adjustment of the LED display device can be achieved through the push buttons or knobs on the control panel. Furthermore, the remote control can be used for functions such as page turning and annotation in meeting scenarios.
[0030] Figure 2 The diagram shows a module schematic of an LED display control card according to an embodiment of the present invention. The LED display control card 200 includes: a data processing module 220, a switching module 230, a microprocessor 240, a timing control module 250, and several input interfaces and output interfaces. The data processing module 220 includes a data reading unit 221, a video and image processing unit 222, and an audio processing unit 223. The input interfaces include, for example, an external storage device interface 211, a video input interface 212, and a parameter configuration interface 214. The output interfaces include an audio output interface 213, a first output interface 260, and a second output interface 270.
[0031] Specifically, the external storage device interface 211 is electrically connected to the data reading unit 221 in the data processing module 220. The external storage device interface 211 is, for example, a USB Type-A interface, which can be connected to storage devices such as USB flash drives as external storage devices. Taking a USB flash drive as an example, the USB flash drive may store information such as videos, audio, and pictures. The corresponding information in the USB flash drive can be read through the data reading unit 221, and the corresponding information can be played locally by operating the control panel or remote control. Furthermore, the USB flash drive may also store system firmware. By reading the firmware information in the USB flash drive through the external storage device interface 211 via the data reading unit 221, the system firmware can be updated and upgraded.
[0032] The video input interface 212 is electrically connected to the video and image processing unit 222 in the data processing module 220. The video input interface 212 is, for example, a DisplayPort (DP) interface or a standard High Definition Multimedia Interface (HDMI) interface, supporting the HDMI 1.4 standard protocol and custom resolution, with a maximum support of 1920*1080 pixels and a 60Hz refresh rate. External display data is input through the video input interface 212, processed by the video and image processing unit 222 in the data processing module 220, so that the processed display data corresponds to the LED display screen 100, and then selected by the switching module 230 to be output to the first output interface 260 and / or the second output interface 270.
[0033] Of course, external display data may also include audio information, which can be input along with video information through video input interface 212. That is, the HDMI signal contains audio information. The audio processing unit 223 in the data processing module 220 can process the audio information and provide it to the audio output interface 213. The audio output interface 213 can be connected to external audio playback devices such as headphones and speakers to play the corresponding audio.
[0034] The parameter configuration interface 214 is connected to, for example, a microprocessor 240. The microprocessor 240, for example, stores pre-stored parameter configuration information, which controls the data processing module 220 to process the data. The parameter configuration interface 214 is, for example, a TYPE-C interface. A host computer can connect to the LED display control card 200 through this interface to obtain or adjust its pre-stored parameter configuration information. The host computer may include devices such as computers, tablets, or mobile phones. The parameter configuration information may include, for example, the resolution and layout of the LED display screen, allowing the video processing module 220 to perform corresponding scaling operations on the external video signal provided by the video input interface 212 according to the resolution of the LED display screen, thereby obtaining a display panel matching signal. The timing control module 250, for example, divides the display panel matching signal according to the layout information of the LED display screen in the parameter configuration information, forming a driving signal corresponding to the LED module, thereby driving the multiple LED modules that make up the LED display screen to display, forming the required display image.
[0035] The LED display control card 200 has a first output interface 260, for example, an LED output interface, and a second output interface 270, for example, an HDMI output interface. It can connect to an LED display screen via the first output interface 260, or to a conventional LCD display screen via the second output interface 270. The first output interface 260 and the second output interface 270 are respectively connected to the data processing module 220 via a switching module 230. A timing control module 250 is also provided between the first output interface 260 and the switching module 230. This timing control module 250 can, for example, act as a receiver card for the LED display screen connected to the first output interface 260, and can power the LED modules in the LED display screen.
[0036] Furthermore, the first output interface 260 and the second output interface 270 are also connected to the microprocessor 240. The microprocessor 240 can detect the connection status of the first output interface 260 and the second output interface 270, determine whether they are connected to the load (display screen), and thus control the switching module 230 to provide the data processed by the data processing module 220 to the first output interface 260 or the second output interface 270. Furthermore, in some scenarios, such as when a large LED display screen spliced from multiple LED modules is needed for advertising and display, and other smaller displays are also needed for simultaneous display, the corresponding displays can be connected to the first output interface 260 and the second output interface 270 simultaneously. This LED display control card 200 can also meet the dual-screen display requirements of the LED display screen and other displays supporting HDMI interfaces.
[0037] The LED display device using the LED display control card 200 provided by this invention can be used as a large display as a whole. It can be connected to various devices with video sources, making the LED display device suitable for a variety of different scenarios. When the usage scenario changes, the external video source device can be switched to complete the adaptation. Furthermore, if the arrangement of the LED modules also changes, it can be adapted to the new LED module arrangement by making corresponding adjustments through the parameter configuration interface 214.
[0038] Specifically, in a conference setting, the conference system can be connected to the LED display control card 200 via the video input interface 212. The conference system fulfills the conference function requirements, and the LED display device with the LED display control card 200 displays the corresponding images. In a home setting, a set-top box can be connected to the LED display control card 200 via the video input interface 212 to meet the needs of a home television. For advertising, a USB flash drive containing advertising videos can be connected to an external storage device for local loop playback, or the advertising system can be connected to the LED display control card 200 via the video input interface 212 to play advertisements. For rental settings, the LED display device with the LED display control card 200 only needs a video source to play programs. Furthermore, the product provided by this invention is applicable to all the above scenarios. For example, if equipment is idle in some scenarios, it can be retrieved and reused in other scenarios, significantly reducing equipment idleness and ensuring full utilization of the equipment.
[0039] The LED display control card and display device provided by this invention abandon the Windows or Android operating system and the proprietary protocols customized by various manufacturers required by traditional LED all-in-one machines. This application adopts a variety of general interfaces and open protocols to enhance external compatibility. Moreover, this application does not require a complex operating system, which not only significantly reduces hardware costs and operational complexity, but also allows users to choose the corresponding front-end playback device according to their own needs, such as set-top boxes, advertising control boxes, etc., or use USB flash drives for local playback. It not only reduces the complexity of the LED display control card and greatly reduces equipment costs, but also has basic playback, OSD, scaling and sending functions. It can be flexibly matched with playback sources, is compatible with third-party control systems, and is applicable to a variety of scenarios to meet the needs of users in different scenarios.
[0040] As described above, these embodiments of the present invention do not exhaustively describe all details, nor do they limit the invention to specific embodiments. Clearly, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to effectively utilize the invention and its modifications. The scope of protection of this invention should be determined by the scope defined in the claims of this invention.
Claims
1. An LED display control card, characterized in that, include: The data processing module includes video and image processing units; A video input interface is used to receive external video signals, and the video input interface is connected to the video and image processing unit of the data processing module. The first output interface is used to connect to the LED display screen; A timing control module is connected between the data processing module and the first output interface, and the timing control module is used to provide driving signals to the LED display screen; A microprocessor is connected to the data processing module and the timing control module; The microprocessor pre-stores parameter configuration information of the LED display screen corresponding to the LED display control card. The data processing module scales and adjusts the resolution of the received external video signal according to the parameter configuration information to obtain a display panel matching signal. The timing control module segments the display panel matching signal according to the parameter configuration information to form a corresponding driving signal to drive the LED display screen.
2. The display control card according to claim 1, characterized in that, It also includes an external storage device interface, which is connected to the data reading unit in the data processing module. The external storage device interface is used to access an external storage device, and the data reading unit reads video data and / or system firmware stored in the external storage device for display or to update the system firmware.
3. The display control card according to claim 2, characterized in that, It also includes a second output interface for connecting to a display screen with a high-definition multimedia interface; the first output interface and the second output interface are connected to the data processing module through a switching module; the timing control module is located between the switching module and the first output interface; the microprocessor can detect the connection status of the first output interface and the second output interface, and control the switching module to output the display panel matching signal to the first output interface and / or the second output interface.
4. The display control card according to claim 2, characterized in that, The external storage device interface includes any one of the following: USB TYPE-A interface, Micro-USB interface, and USB TYPE-C interface.
5. The display control card according to claim 1, characterized in that, The video input interface includes at least one of a high-definition multimedia interface and a display interface.
6. The display control card according to claim 1, characterized in that, It also includes a parameter configuration interface, which is connected to the microprocessor. The parameter configuration interface is used to interact with the host computer to obtain and adjust the parameter configuration information.
7. The display control card according to claim 3, characterized in that, The first output interface is used to connect to the LED display screen, and the second output interface is a high-definition multimedia output interface.
8. The display control card according to claim 1, characterized in that, The data processing module further includes an audio processing unit. The display control card includes an audio output interface, which is connected to the audio processing unit. The audio processing unit extracts audio data from the external video signal received by the video input interface and outputs it through the audio output interface.
9. The display control card according to claim 1, characterized in that, It also includes a brightness sensor interface connected to the microprocessor, the brightness sensor interface being used to receive ambient brightness signals, and the microprocessor adjusting the brightness of the LED display screen based on the ambient brightness signals.
10. An LED display device, characterized in that, include: An LED display screen is composed of multiple LED modules spliced together. The LED display control card as described in any one of claims 1 to 9 is connected to the LED display screen and drives its display. The LED display control card receives external video source signals through a video input interface, and after passing through the data processing module and the timing control module, drives the LED display screen to display images through the first output interface.
11. The display device according to claim 10, characterized in that, The multiple LED modules are connected in a linear or serpentine series structure, and the LED display control card is connected to the first LED module.
12. The display device according to claim 11, characterized in that, It also includes a remote control or control panel connected to the LED display control card, used to realize at least one of the following functions: screen display menu adjustment, local playback control, and firmware upgrade.