CN218676015U

CN218676015U - Cascaded processor for LED video system and LED video system

Info

Publication number: CN218676015U
Application number: CN202223228510.3U
Authority: CN
Inventors: 钟培锋; 李延双
Original assignee: Shenzhen Aixiesheng Technology Co Ltd
Current assignee: Shenzhen Aixiesheng Technology Co Ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-03-21
Anticipated expiration: 2032-12-03

Abstract

The utility model provides a cascade treater and LED video system for LED video system, including MCU chip, USB-AF interface and USB-BF interface, USB-AF interface with the input of MCU chip is connected, cascades the USB-BF interface connection of treater with the input side, USB-BF interface with the output of MCU chip is connected, cascades the USB-AF interface connection of treater with the output side, wherein, the multiplexing USB interface and UART interface that are USB interface and UART interface of USB-BF interface. The utility model discloses set up MCU chip, USB-AF interface and USB-BF interface, the multiplexing USB interface and UART interface that are of USB-BF interface has reduced the quantity of interface, has solved through a plurality of LED video processor of host computer control, needs a plurality of interfaces, has increased the defect of the complexity of circuit.

Description

Cascaded processor for LED video system and LED video system

Technical Field

The utility model relates to a display screen technical field especially relates to a cascade processor and LED video system for LED video system.

Background

The LED spliced screen has bright display picture color and strong stereoscopic impression, and is widely applied to the fields of stations, docks, airports, markets, hospitals, hotels, banks, stock markets and the like. The LED video processor is an important part in an LED spliced screen control system. Due to the fact that the resolution ratio of the LED spliced screen is higher and higher, the LED video processor is larger and larger in loading area from the original 720P and 1080P to the current 4K and even 8K, and the number of the LED video processors is larger and larger. Currently, a plurality of LED video processors are controlled by an upper computer, a plurality of interfaces are needed, and the complexity of a circuit is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cascade processor and LED video system for LED video system has solved among the prior art through a plurality of LED video processor of host computer control, needs a plurality of interfaces, has increased the defect of the complexity of circuit.

The utility model provides a cascade treater for LED video system, including MCU chip, USB-AF interface and USB-BF interface, USB-AF interface with the input of MCU chip is connected, cascades the USB-BF interface connection of treater with the input side, USB-BF interface with the output connection of MCU chip cascades the USB-AF interface connection of treater with the output side, wherein, the multiplexing USB interface and UART interface that is of USB-BF interface.

According to the utility model provides a pair of cascade processor for LED video system, USB-AF interface includes the VCC pin, is used for signal reception's D-pin, is used for signal transmission's D + pin and GND pin, wherein, diode D1's one end is connected to D + pin, diode D2's one end is connected to D-pin, diode D1's the other end with diode D2's other end ground connection.

According to the utility model provides a pair of cascade processor for LED video system, the USB-BF interface is including the first pin that is used for connecting the VCC, the second pin that is used for receiving and dispatching D-signal or UART-RX signal, the fourth pin that is used for receiving and dispatching D + signal or UART-TX and is used for ground connection, first pin connecting resistance R2 and resistance R1, resistance R2 and resistance R1's common port to MCU chip send control signal, diode D3's one end is connected to the third pin, diode D4's one end is connected to the second pin, diode D3's the other end diode D4's the other end with resistance R1's other end ground connection.

According to the utility model provides a pair of cascade processor for LED video system, the MCU chip includes D + receiving and dispatching pin, D-receiving and dispatching pin, UART-TX pin, UART-RX pin and acquires control signal's IO pin.

The utility model also provides a LED video system, including host computer and at least one cascade the treater, host computer and one of them cascade the USB-BF interface connection of treater, cascade the treater and cascade.

According to the utility model provides a pair of LED video system still includes sensor circuit, sensor circuit with cascade processor's USB-AF interface connection.

According to the utility model provides a pair of LED video system, sensor circuit includes temperature and humidity sensor.

The utility model provides a cascade processor and LED video system for LED video system sets up MCU chip, USB-AF interface and USB-BF interface, and the multiplexing USB interface of USB-BF is USB interface and UART interface, has reduced the quantity of interface, has solved through a plurality of LED video processor of host computer control, needs a plurality of interfaces, has increased the defect of the complexity of circuit.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic block diagram of a cascade processor for an LED video system provided by the present invention;

fig. 2 is a schematic circuit diagram of a cascade processor for an LED video system according to the present invention;

fig. 3 is one of the functional block diagrams of the LED video system provided by the present invention;

fig. 4 is a second schematic block diagram of the LED video system provided by the present invention.

Reference numerals:

1-MCU chip, 2-USB-AF interface, 3-USB-BF interface.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Fig. 1 is the utility model provides a functional block diagram of a cascade treater for LED video system, as shown in fig. 1, the utility model provides a cascade treater for LED video system, including MCU chip 1, USB-AF interface 2 and USB-BF interface 3, USB-AF interface 2 with MCU chip 1's input is connected, cascades the USB-BF interface 3 of treater with the input side and is connected, USB-BF interface 3 with MCU chip 1's output is connected, cascades the USB-AF interface 2 of treater with the output side and is connected, wherein, USB-BF interface 3 is multiplexing to USB interface and UART interface.

It can be understood that two interfaces USB-AF and USB-BF are introduced outside the cascade processor, and the video processor is cascaded through the two interfaces, wherein the USB-BF interface 3 is multiplexed into the USB interface and the UART interface. By arranging the MCU chip, the USB-AF interface and the USB-BF interface, the USB-BF interface is multiplexed into the USB interface and the UART interface, the number of the interfaces is reduced, and the defects that a plurality of interfaces are needed and the complexity of a circuit is increased due to the fact that a host computer controls a plurality of LED video processors are overcome.

Fig. 2 is a schematic circuit diagram of a cascade processor for LED video system, as shown in fig. 2, as an embodiment, the USB-AF interface includes VCC pin, D-pin for signal reception, D + pin for signal transmission and GND pin, wherein, diode D1's one end is connected to D + pin, diode D2's one end is connected to D-pin, diode D1's the other end with diode D2's the other end ground.

As an embodiment, the USB-BF interface includes a first pin for connecting VCC, a second pin for receiving and transmitting a D-signal or a UART-RX signal, a third pin for receiving and transmitting a D + signal or a UART-TX signal, and a fourth pin for grounding, the first pin is connected to a resistor R2 and a resistor R1, a common terminal of the resistor R2 and the resistor R1 transmits a control signal to the MCU chip, the third pin is connected to one end of a diode D3, the second pin is connected to one end of a diode D4, and the other end of the diode D3, the other end of the diode D4, and the other end of the resistor R1 are grounded.

As an embodiment, the MCU chip comprises a D + transceiving pin, a D-transceiving pin, a UART-TX pin, a UART-RX pin and an IO pin for acquiring a control signal.

In order to prevent the USB interface from being damaged by high-voltage transient current generated in the processes of plugging and being struck by lightning, inducting a load switch, electrostatic discharge (ESD) and the like. Therefore, the utility model discloses transient suppression diode (D1-D4) have been added and have been protected MCU's IO pin.

Fig. 3 is one of the principle block diagrams of the LED video system provided by the present invention, as shown in fig. 3, the present invention further provides a LED video system, which comprises an upper computer and at least one of the cascade processors, the upper computer and one of the cascade processors are connected to the USB-BF interface, and the cascade processors are cascaded.

It can be understood that when the USB-BF interface is connected to the upper computer, VCC is 5V, and since the level of the conventional MCU is 3.3V, the VCC5V level needs to be divided and then provided to the MCU. After VCC is divided by two resistors R1\ R2, FLAG is 3.3V (FLAG =5 × R1/(R1 + R2)), and IO1 of MCU will acquire high level. When the MCU acquires a high level, the USB-BF interface is used as a USB interface, when the FLAG is a low level, the UART is judged, the D-is multiplexed into the UART-RX, and the D + is multiplexed into the UART-TX.

Fig. 4 is a second schematic block diagram of the LED video system provided in the present invention, as shown in fig. 4, and as an embodiment, the LED video system further includes a sensor circuit, where the sensor circuit is connected to the USB-AF interface of the cascade processor.

As an embodiment, the sensor circuit comprises a temperature and humidity sensor.

Aiming at some application scenes with low resolution such as a door head screen, an elevator advertising screen and the like, the USB interface can also send some image data, so that the application of some image interfaces is simplified. At the moment, the USB-AF interface and the UART interface can be used as temperature and humidity data acquisition interfaces. And the temperature and humidity sensor transmits the acquired data back to the PC upper computer through the video processor.

It should be noted that the improvement point of the present invention lies in the circuit, and the processing procedure for the image data is the prior art, and is not repeated.

The utility model provides a LED video processor, programmable logic device 3 have the image compression function, can reduce the data volume of awaiting sending to increase the area of taking the load and realize reducing the mesh of net gape. In addition, the interface of the PSRAM memory is simpler, so that the PCB circuit design is simpler, and the hardware structure is also simplified.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A cascade processor for an LED video system is characterized by comprising an MCU chip, a USB-AF interface and a USB-BF interface, wherein the USB-AF interface is connected with the input end of the MCU chip and connected with the USB-BF interface of an input side cascade processor, the USB-BF interface is connected with the output end of the MCU chip and connected with the USB-AF interface of an output side cascade processor, and the USB-BF interface is multiplexed into a USB interface and a UART interface.

2. The cascade processor for the LED video system as claimed in claim 1, wherein the USB-AF interface comprises a VCC pin, a D-pin for signal reception, a D + pin for signal transmission and a GND pin, wherein the D + pin is connected to one end of a diode D1, the D-pin is connected to one end of a diode D2, and the other end of the diode D1 and the other end of the diode D2 are grounded.

3. The cascade processor for the LED video system of claim 1, wherein the USB-BF interface comprises a first pin for connecting VCC, a second pin for transceiving D-signals or UART-RX signals, a third pin for transceiving D + signals or UART-TX, and a fourth pin for grounding, the first pin is connected to a resistor R2 and a resistor R1, a common terminal of the resistor R2 and the resistor R1 transmits a control signal to the MCU chip, the third pin is connected to one end of a diode D3, the second pin is connected to one end of a diode D4, and the other end of the diode D3, the other end of the diode D4, and the other end of the resistor R1 are grounded.

4. The cascade processor for an LED video system of claim 1, wherein the MCU chip comprises a D + transceiving pin, a D-transceiving pin, a UART-TX pin, a UART-RX pin, and an IO pin for acquiring a control signal.

5. An LED video system, comprising an upper computer and at least one cascade processor according to any one of claims 1 to 4, wherein the upper computer is connected with a USB-BF interface of one of the cascade processors, and the cascade processors are cascaded.

6. The LED video system of claim 5, further comprising a sensor circuit connected to the USB-AF interface of the cascade processor.

7. The LED video system of claim 6, wherein the sensor circuit comprises a temperature and humidity sensor.