DP to HDMI control circuit and display device

Abstract

The utility model relates to DP turns HDMI control circuit and display equipment, including display card configuration subcircuit, channel switching subcircuit and hot plug subcircuit, first transmission configuration signal to display card, configure the DP port of display card into HDMI output mode, control signal switching channel on display card simultaneously, let it synchronous switching be HDMI channel, then control circuit output hot plug signal to inform display card end rear drive board card can normally receive signal, finally display board card end treats the signal of DP port as HDMI signal processing just can, and the process of controlling DP display card output to HDMI signal receiving is completed, after integrating this circuit in display board card end, realize just using a conventional DP line, can connect computer display card and originally only support HDMI's display board card, need not use DP turns HDMI's custom wire or additional DP turns HDMI's conversion chip, greatly reduced conversion cost.

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