What is HDMI?

HDMI (High-Definition Multimedia Interface) is a digital interface for audiovisual equipment such as high-definition television and home theater systems. It carries uncompressed digital video and digital audio signals. HDMI is able to carry a bandwidth of 6.65 Gbps (gigabits per second). This is more than twice the bandwidth needed to transmit multi-channel audio and video, future-proofing HDMI for some time to come.

HDMI cables give a much better video image than its predecessors, component video, S-Video and composite video.

HDMI is an uncompressed, all-digital signal, while the aforementioned interfaces are all analog. With an analog interface, a clean digital source is translated into less precise analog, sent to the television, then converted back to a digital signal to display on screen. At each translation, the digital signal loses integrity, resulting in some distortion of picture quality. HDMI preserves the source signal, eliminating analog conversion to deliver the sharpest, richest picture possible.

HDMI supports standard video formats, enhanced video and high-definition. It is also backwards compatible with DVI (Digital Video Interface). High-end graphics cards featuring a DVI port can connect to a HDMI interface via a DVI/HDMI adaptor. This is simply a passive adaptor with a DVI connector on one end and a HDMI connector on the other.

Knoll HDMI cables are premium quality featuring 99.99% oxygen free copper, double shielding, 24 carat gold connectors, RoHs compliant and a flexible pvc cable jacket. They are available in male to male version only in various lengths.

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