DVI and HDMI.
In this post, I will simply point out the difference between a DVI and HDMI switch. DVI ( Digital Video Interface) is an all digital video standard for transmitting superior uncompressed digital video. DVI uses 3 differential pairs to send digital R,G,B signals. A 4th differential pair is used for clocking the bits at maximum of 165 MHz. 24 bits of pixel color information ( 8 bits each for R,G,B)is transmitted per clock. The aggregate data rate is therefore 10×165MHz = 1.65 Gbps! DVI transmits in native digital ( no A/D conversions) R,G, B format that is ideal for HDTV systems.
HDMI switch, on the other hand, ( High Definition Multimedia Interface) is the state of art digital A/V connection that supports uncompressed, all-digital video and audio in a single connection. It is truly the first digital “multi-media” interconnect supporting both digital video and audio. HDMI and DVI has the same video quality. The major difference is that HDMI also supports multi-channel digital audio in the same cable! HDMI transmits in native digital ( no A/D conversions) R,G, B format that is ideal for HDTV systems.