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In order to realize multi channel DVI video signal acquisition and real-time detection based on high speed avionics bus, a design scheme of airborne multi-channel DVI video signal converter is proposed. According to the characteristics of high speed and high real-time of multi channel DVI video signal in high speed avionics bus, According to the characteristics of multi-channel DVI video signal rate high speed avionics bus, high real-time, complete the signal equalization, signal pre emphasis and high-speed signal crossover design, using MCU to wheel switch acquisition, debounce and judgment, by configuring the corresponding register complete channel switching function test DVI port. The experimental results show that the airborne multi-channel DVI video signal converter has the advantages of good stability, high reliability and strong real-time performance, and solves the problem of detecting the multi-channel DVI video signal of high-speed avionics bus.