Novel vehicle-mounted HDMI to MIPI adapter plate

The embodiment of the utility model discloses a novel vehicle-mounted HDMI-to-MIPI adapter plate, comprising a circuit board on which are integrated an HDMI signal input circuit used for receiving HDMI signals; the HDMI to MIPI processing circuit is used for converting the HDMI signal into an MIPI signal and an I2S digital audio signal and outputting the MIPI signal and the I2S digital audio signal; the audio D/A conversion circuit is used for converting the I2S digital audio signal into a left stereo analog audio signal and a right stereo analog audio signal; the signal output socket is used for being externally connected with an automobile central control navigation host mainboard and transmitting MIPI signals and left and right stereophonic analog audio signals; and a power management circuit. According to the utility model, an HDMI signal is converted into an MIPI signal to be output, a traditional low-resolution aux video analog input signal interface is replaced, and a transmission interface for high-de