LED display integrated control card and display system

Abstract

The utility model discloses a kind of LED display integrated control card and display system;The control card includes: main control chip;LED drive chip is connected with main control chip, and LED drive chip is internally integrated with RGB three color Gamma correction circuit that can be respectively carried out non-linear correction to red, green, blue three primary colors;First network interface chip and second network interface chip are connected with main control chip U1 respectively;First RJ45 interface J1 and second RJ45 interface are configured as: can simultaneously work independently, so that the control card can be as the root node of cascaded network, by the two RJ45 interfaces Directly connected and control downstream at least one integrated control card and at least one ordinary LED receiving card;The control card reduces system complexity and cost;From hardware level, color restoration degree and display level are improved;Networking flexibility is strong, especially support and ordinary receiving card Hybrid cascade, good compatibility, expansion is convenient.

Description

Technical Field

[0001] This utility model relates to the field of LED display control equipment technology, specifically to a highly integrated LED display control card that supports hybrid cascading and a display system including the control card. Background Technology

[0002] Traditional LED display control systems typically employ a separate architecture for transmitting and receiving cards. This architecture presents challenges for small to medium-sized displays, including system complexity, numerous wiring connections, and high costs. While some existing integrated solutions integrate some functions onto a single board, they often fall short in terms of load capacity, display effect optimization (such as color correction), and especially in networking flexibility. They also cannot simultaneously support new integrated devices and existing traditional receiving cards, limiting their application in scenarios requiring flexible expansion and retrofitting. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an integrated LED display control card and display system that is compact in structure, has comprehensive functions, and supports hybrid cascading.

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated LED display control card, including: a main control chip U1; an LED driver chip U2 connected to the main control chip U1, wherein the LED driver chip U2 integrates an RGB three-color Gamma correction circuit that can perform nonlinear correction on the red, green and blue primary colors respectively; a first network interface chip U3 and a second network interface chip U4, respectively connected to the main control chip U1;

[0005] The first RJ45 interface J1 and the second RJ45 interface J2 are respectively connected to the first network interface chip U3 and the second network interface chip U4; wherein, the first RJ45 interface J1 and the second RJ45 interface J2 are configured to work independently at the same time, so that the control card can act as the root node of the cascaded network, and directly connect to and control at least one downstream integrated control card and at least one ordinary LED receiver card through the two RJ45 interfaces.

[0006] Preferably, the LED driver chip U2 has 32 parallel data output pins.

[0007] Preferably, it further includes a storage interface unit connected to the main control chip U1; the storage interface unit includes a first USB interface J3 and a second USB interface J4 that are independent of each other.

[0008] Preferably, the storage interface unit further includes an SD card slot J5 and / or an onboard NAND Flash chip U5.

[0009] Preferably, it also includes an onboard test button group SW1, which is electrically connected to the GPIO pin of the main control chip U1.

[0010] Preferably, it also includes an audio output unit connected to the main control chip U1; the audio output unit includes an audio codec chip U6 and an audio output interface J7.

[0011] To address the aforementioned technical problems, this utility model also provides an LED display system, comprising: an LED display integrated control card serving as a master card, wherein the master card is any of the control cards described above; a first cascade subsystem connected to the first RJ45 interface J1 of the master card via a network cable; and a second cascade subsystem connected to the second RJ45 interface J2 of the master card via a network cable; wherein the first cascade subsystem is a device chain consisting of at least one ordinary LED receiver card connected in a chain topology; and the second cascade subsystem is a device group consisting of at least one of the LED display integrated control cards connected in a star topology.

[0012] Preferably, in the first cascaded subsystem, there are multiple ordinary LED receiver cards connected in series via network cables, wherein the first ordinary LED receiver card is connected to the first RJ45 interface J1 of the main card, and subsequent receiver cards are connected to the output port of the previous receiver card in sequence.

[0013] Preferably, in the second cascaded subsystem, multiple LED display integrated control cards are used as slave cards, and their RJ45 interfaces are directly connected to the second RJ45 interface J2 of the master card via a network cable.

[0014] Preferably, the first cascaded subsystem and / or the second cascaded subsystem are themselves a hybrid cascaded network; wherein, the hybrid cascaded network refers to a network consisting of at least one LED display integrated control card and at least one ordinary LED receiver card, connected in a chain, star, or combination thereof via their RJ45 interfaces.

[0015] After adopting the above-mentioned integrated LED display control card, the beneficial effects of this utility model are as follows:

[0016] High integration: It integrates multiple functions such as sending, receiving, driving, audio, and storage into a single board, which has a compact structure and reduces system complexity and cost;

[0017] Excellent display effect: Through the hardware Gamma correction circuit built into the driver chip, the color reproduction and display layering are improved from the hardware level.

[0018] High networking flexibility: The hardware structure of dual gigabit ports provides a physical basis for star, chain, tree and hybrid topologies, especially supporting hybrid cascading with ordinary receiver cards, with good compatibility and convenient expansion;

[0019] Easy maintenance: The hardware design of the onboard test button allows for quick functional verification without additional equipment on site, greatly facilitating installation and debugging. Attached Figure Description

[0020] Figure 1 This is a system diagram of the LED display integrated control card described in this utility model;

[0021] Figure 2 This is a connection diagram of the LED display system described in this utility model in a hybrid cascade mode. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. Example

[0023] Please see Figure 1 ;

[0024] This embodiment discloses an integrated LED display control card, including: a main control chip U1;

[0025] LED driver chip U2 is connected to the main control chip U1. The LED driver chip U2 integrates an RGB three-color Gamma correction circuit that can perform non-linear correction on the red, green and blue primary colors respectively. The first network interface chip U3 and the second network interface chip U4 are respectively connected to the main control chip U1. The first RJ45 interface J1 and the second RJ45 interface J2 are respectively connected to the first network interface chip U3 and the second network interface chip U4.

[0026] The first RJ45 interface J1 and the second RJ45 interface J2 are configured to work independently at the same time, enabling the control card to act as the root node of the cascaded network and directly connect to and control at least one integrated control card and at least one ordinary LED receiver card downstream through the two RJ45 interfaces. Example

[0027] This embodiment is based on Embodiment 1. In this embodiment, the LED driver chip U2 has 32 parallel data output pins.

[0028] Reference Figure 1The main control chip U1 (0213ECV) communicates with the LED driver chip U2 (AXS9601) through the RGB888 data bus and control signal lines. The 32 outputs of the LED driver chip U2 are led out to the LED module through connectors. The network interface chips U3 and U4 (YT8531P) are connected to the main control chip U1 through the RGMII interface, and then connected to the RJ45 interfaces J1 and J2 through the network transformer. Example

[0029] This embodiment is based on Embodiment 1. In this embodiment, the LED display integrated control card also includes a storage interface unit, which is connected to the main control chip U1; the storage interface unit includes a first USB interface J3 and a second USB interface J4 that are independent of each other.

[0030] The storage interface unit also includes an SD card slot J5 and / or an onboard NAND Flash chip U5. Example

[0031] This embodiment is based on Embodiment 1. In this embodiment, the LED display integrated control card also includes an onboard test button group SW1, which is electrically connected to the GPIO pin of the main control chip U1.

[0032] The LED display integrated control card also includes an audio output unit connected to the main control chip U1; the audio output unit includes an audio codec chip U6 and an audio output interface J7. Example

[0033] This embodiment discloses an LED display system, including: an LED display integrated control card as a main card, wherein the main card is the control card described in any one of embodiments one to four;

[0034] A first cascaded subsystem is connected to the first RJ45 interface J1 of the main card via a network cable;

[0035] A second cascade subsystem is connected to the second RJ45 interface J2 of the main card via a network cable;

[0036] The first cascaded subsystem is a device chain consisting of at least one ordinary LED receiver card connected in a chain topology; the second cascaded subsystem is a device group consisting of at least one LED display integrated control card connected in a star topology. Example

[0037] This embodiment is based on embodiment five. In this embodiment, in the first cascaded subsystem, there are multiple ordinary LED receiving cards, which are connected in series via network cables. The first ordinary LED receiving card is connected to the first RJ45 interface J1 of the main card, and subsequent receiving cards are connected to the output port of the previous receiving card in sequence.

[0038] In the second cascaded subsystem, multiple LED display integrated control cards are used as slave cards, and their RJ45 interfaces are directly connected to the second RJ45 interface J2 of the master card via network cables. Example

[0039] This embodiment is based on Embodiment 5. Please refer to Embodiment 5. Figure 2 ,

[0040] In this embodiment, the first cascaded subsystem and / or the second cascaded subsystem are themselves a hybrid cascaded network; wherein, the hybrid cascaded network refers to a network consisting of at least one LED display integrated control card and at least one ordinary LED receiver card, connected in a chain, star, or combination thereof through their RJ45 interfaces.

[0041] Figure 2 The connection of the "Hybrid Ultimate Mode" was demonstrated. The main control card connects multiple ordinary receiver cards in series (chain connection) via Ethernet cables through its first RJ45 interface J1. Each ordinary receiver card drives its corresponding LED display module. The main control card can connect to another string of ordinary receiver cards or directly to another integrated control card through its second RJ45 interface J2, thus achieving a complex hybrid topology.

[0042] It should be understood that the above are merely preferred embodiments of the present utility model and should not be construed as limiting the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An integrated control card for LED displays, characterized in that, include: Main control chip U1; LED driver chip U2 is connected to the main control chip U1. The LED driver chip U2 integrates an RGB three-color Gamma correction circuit that can perform non-linear correction on the red, green and blue primary colors respectively. The first network interface chip U3 and the second network interface chip U4 are respectively connected to the main control chip U1; The first RJ45 interface J1 and the second RJ45 interface J2 are respectively connected to the first network interface chip U3 and the second network interface chip U4; The first RJ45 interface J1 and the second RJ45 interface J2 are configured to work independently at the same time, enabling the control card to act as the root node of the cascaded network and directly connect to and control at least one integrated control card and at least one ordinary LED receiver card downstream through the two RJ45 interfaces.

2. The LED display integrated control card according to claim 1, characterized in that, The LED driver chip U2 has 32 parallel data output pins.

3. The LED display integrated control card according to claim 1, characterized in that, It also includes a storage interface unit connected to the main control chip U1; the storage interface unit includes a first USB interface J3 and a second USB interface J4 that are independent of each other.

4. The LED display integrated control card according to claim 3, characterized in that, The storage interface unit also includes an SD card slot J5 and / or an onboard NAND Flash chip U5.

5. The LED display integrated control card according to claim 1, characterized in that, It also includes an onboard test button group SW1, which is electrically connected to the GPIO pins of the main control chip U1.

6. The LED display integrated control card according to claim 1, characterized in that, It also includes an audio output unit connected to the main control chip U1; the audio output unit includes an audio codec chip U6 and an audio output interface J7.

7. An LED display system, characterized in that, include: An integrated LED display control card serving as the main card, wherein the main card is the control card as described in any one of claims 1 to 6; A first cascaded subsystem is connected to the first RJ45 interface J1 of the main card via a network cable; A second cascade subsystem is connected to the second RJ45 interface J2 of the main card via a network cable; The first cascaded subsystem is a device chain consisting of at least one ordinary LED receiver card connected in a chain topology. The second cascaded subsystem is a group of devices consisting of at least one of the LED display integrated control cards connected in a star topology.

8. The LED display system according to claim 7, characterized in that, In the first cascaded subsystem, there are multiple ordinary LED receiver cards, which are connected in series via network cables. The first ordinary LED receiver card is connected to the first RJ45 interface J1 of the main card, and subsequent receiver cards are connected to the output port of the previous receiver card in sequence.

9. An LED display system according to claim 7, characterized in that, In the second cascaded subsystem, multiple LED display integrated control cards are used as slave cards, and their RJ45 interfaces are directly connected to the second RJ45 interface J2 of the master card via network cables.

10. An LED display system according to claim 7, characterized in that, The first cascaded subsystem and / or the second cascaded subsystem are themselves a hybrid cascaded network; wherein, the hybrid cascaded network refers to a network consisting of at least one LED display integrated control card and at least one ordinary LED receiver card, connected in a chain, star, or combination thereof through their RJ45 interfaces.

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