HDMI stands for High Definition Multimedia Interface. An HDMI cable is digital interface connector that transmits both video and audio signals. A single HDMI cable can be used to replace all of the cable connections between a high definition television and other high definition devices, such as a Blu-ray or HD DVD player.
Other methods can be used to connect home theater video components, such as component video, S-video and DVI (digital visual interface). These are legacy type connections that may not have the ability to work properly with some of the latest high definition technologies, such as 1080p resolution and Deep Color. Most HDTVs require the use of an HDMI cable to achieve 1080p resolution from Blu-ray or HD DVD players or cable boxes. It is therefore safe to assume that you should use a quality HDMI cable, at least when matching 1080p video components to any 1080p HDTV.
Are all the cables the same?