High Definition Multimedia Interface, HDMI is a digital video/audio interface technology that is a specialized digital interface suitable for image transmission. It can simultaneously transmit audio and video signals, with a maximum data transmission speed of 2.25GB/s.

HDMI not only meets the resolution of 1080P, but also supports digital audio formats such as DVD Audio, supports eight channel 96kHz or stereo. 192kHz digital audio transmission, and can transmit uncompressed audio and video signals. HDMI can be used for set-top boxes DVD players, personal computers, TV arcades, amplifiers, digital speakers, and televisions. HDMI can transmit both audio and video signals simultaneously. HDMI supports EDID DDC2B， Therefore, devices with HDMI have the characteristic of "plug and play", and the signal source and display device will automatically negotiate to select the most suitable video/audio format. Compared to DVI, the HDMI interface has a smaller volume, The optimal cable length for HDMI/DVI should not exceed 8 meters. With just one HDMI cable, it can replace up to 13 analog transmission lines, effectively solving the problem of messy and tangled connections behind home entertainment systems.