1, DVI: Use digital video interface. The interface standard introduced by DDWG is composed of Silicon Image Company.
2.HDMI: adopts high-definition multimedia interface, which is an all-digital video and sound transmission interface.
Second, the technology is different.
1, DVI: Digital signal transmission based on TMDS conversion minimum differential signal technology. Long-distance and high-quality digital signal transmission can be realized with low-cost special cables.
2.HDMI: Audio and video signals can be sent simultaneously. Because the audio and video signals use the same wire, the installation difficulty of the system circuit is greatly simplified.
Third, the characteristics are different.
1, DVI: 8-bit data (subgrade color signals in R, G and B) are encoded into 10-bit data (including line field synchronization information, clock information, data de, error correction, etc.). ) by using advanced coding algorithms, and then transmitting data through differential signals after DC balance.
2.HDMI: It is designed to replace the terminals of old analog signal audio and video transmission interfaces such as SCART or RCA. Support various TV and computer video formats, including SDTV and HDTV video images, plus multi-channel digital audio.
Baidu encyclopedia -HDMI
Baidu encyclopedia -DVI interface