High-speed rotating LED display method and system based on double-port RAM and double CPUs

Abstract

The invention discloses a high-speed rotating LED display method and system based on double-port RAM and double CPUs. The high-speed rotating LED display method comprises the steps that an upper computer converts a video or image file into an LED file, and transmits the LED file to a first processor through an Internet of Things module; the first processor stores the data packet into a Nand Flashread-write module; the first processor reads video or image data from the Nand Flash read-write module and writes the data space of the dual-port RAM unit fully; the second processor reads part of video or image data from a specified address of the dual-port RAM unit at regular intervals and transmits the data to the CPLD unit for latching; and the CPLD unit transmits the video or image data to the LED driving module. The high-speed rotating LED display method converts a video or picture file into an LED file through the upper computer, increases the data transmission and reading speed to a great extent, and realizes higher resolution by adopting two CPUs, one dual-port RAM unit and one CPLD unit.

Description

technical field [0001] The invention belongs to the technical field of electronic display, and relates to a high-speed rotating LED display method and system based on dual-port RAM and dual-CPU. Background technique [0002] The existing high-speed rotating LED display system often adopts the structural form of ARM+FPGA with a faster processing speed in order to improve the display resolution, such as the patents of publication numbers CN 109036166A and CN 105072352A. This mode of data processing spends most of the time of the ARM module in In the processing and conversion of video files, the transmission and reading speed of video file data is greatly reduced. In addition, the existing high-speed rotating LED display system often uses a mechanical power supply system. Due to the continuous friction between the motor and the brush, the brush will wear out, so the brush needs to be replaced regularly. The structure of the mechanical power supply system is often complicated. ...

AI Technical Summary

Problems solved by technology

[0002] The existing high-speed rotating LED display system often adopts the structural form of ARM+FPGA with a faster processing speed in order to improve the display resolution, such as the patents of publication numbers CN 109036166A and CN 105072352A. This mode of data processing spends most of the time of the ARM module in In the processing and conversion of video files, the transmission and reading speed of video file data is greatly reduced

In addition, the existing high-speed rotating LED display system often uses a mechanical power supply system. Due to the constant friction between the motor and the brush, the brush will wear out, so the brush needs to be replaced regularly. The structure of the mechanical power supply system is often complicated. Added difficulty to product production

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