HDMI (High-Definition Multimedia Interface) is a digital audio/video interface.
HDMI is an abbreviation for High-Definition Multimedia Interface, a digital audio/video interface. An HDMI interface has multiple differential serial signals that carry audio and video information, a differential clock signal, and a separate control channel that uses the I2C protocol. The differential audio/video and clock channels use the TMDS protocol. Signals may be encrypted using the HDCP protocol.