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What is it? HDMI (High Definition Multimedia Interface) offers uncompressed video data and compressed or uncompressed digital audio data. The video is a compatible standard to that of DVI (digital visual interface) so no signal conversion is necessary therefore no loss of video quality when a DVI-to-HDMI adapter is used although of course there is no provision for audio within the DVI interface.
Advantages: High Definition video (up to 4096×2160) and digital audio in a compact format.
Limitations: whilst native cable lenghts of 15 metres are possible, long cables can cause instability of HDCP and blinking on the screen due to the weakened DDC signal that HDCP (High-bandwidth Digital Content Protection) requires.
Solutions: Using a number of standards, but predominately HD base T HDMI can be sent uncompressed 100 metres over a single cat6 cable. Combined with splitters and switches, digital AV networks can be deployed to distribute AV sources around the home, or in high resolution digital signage applications.