A large-capacity high-definition video matrix system and its realization method

Abstract

The present invention proposes a large-capacity high-definition video matrix system, which includes a human-computer interaction unit, a main control board, an output board and a card slot on a backboard. Board card slot connection, human-computer interaction unit includes host computer or touch screen, touch screen is equipped with OSD enable switch, main control board includes first MCU, output board includes second MCU and FPGA, backplane card slot is equipped with EEPROM, man-machine The interactive unit transmits the OSD switch signal to the second MCU through the first MCU, and the FPGA designs the characters to be superimposed into a dot matrix of a specified size for storage. The invention also relates to a method for realizing a large-capacity high-definition video matrix. Implementing the large-capacity high-definition video matrix system and the matrix implementation method of the present invention has the following beneficial effects: reducing ROM resource consumption, and superimposing character images on video signals when the data volume of OSD is too large.

Description

technical field [0001] The invention relates to the field of video matrix, in particular to a large-capacity high-definition video matrix system and a method for realizing the matrix. Background technique [0002] In recent years, large-capacity high-definition video matrix systems have been widely used in various fields such as video conferencing, command and control centers, public transportation, and medical treatment. In actual project construction, as the number of channels increases, the wiring construction becomes more and more complicated, and the display devices are often installed in different spaces, which greatly increases the difficulty of troubleshooting. OSD (On Screen Display) technology displays channel information on the display device, which is an indispensable part of matrix system design. [0003] It is the most common way to store the superimposed character or image data in the ROM inside the FPGA, and the timing is generated by the internal logic cont...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for reducing ROM resources in view of the defects of the prior art that consume a large amount of ROM resources and cannot realize the superimposition of character images on video signals when the amount of OSD data is too large. Consumption, when the amount of OSD data is too large, a large-capacity high-definition video matrix system and matrix implementation method that can realize superposition of character images on video signals

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