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Some Background Information On The HDMI To DVI Cable

Taking A Closer Look At The HDMI To DVI Cable

HDMI which stands for High-Definition Multimedia Interface is a system developed for transmitting uncompressed digital signals between a host of compatible audio video devices. The HDMI to DVI cable was introduced late in 2003 around about the time that High Definition Television was becoming popular.

This cable is capable of connecting DVD players, set-top boxes, Play Stations, Xboxes and Audio Video receivers to HD televisions, computer monitors and countless other AV devices.

On one cable, any PC or TV video format can be supported. This includes up to eight channels of uncompressed or compressed digital audio and a CEC (Consumer Electronics Control) connection. This CEC connection has the capability of allowing various high definition devices to control one another and gives the user the ability to operate several devices using only one remote control.

The signal does not need to be converted because HDMI is electrically compatible with DVI or Digital Visual Interface. Video quality is not impaired by using the adapter cable. The other connecting standards like SCART, VGA, composite video, S-Video, co-axial cable and D-Terminal are rapidly being replaced by the digitally superior high-definition interface.

This interface is rapidly becoming the de facto connection standard for HDTV’s and according to the electronic market intelligence group In-Stat, about 90 percent of the digital television sets produced in 2007, included the connector. In-Stat also estimated that in 2008 about 229 million of the devices had been sold and the estimate for 2009 was 394 million with the prediction that by the end of 2009 all digital television sets would be fitted with at least one of these connectors.

There are four types of connectors and they have been named A, B, C and D. Type A is a nineteen pin connection and is DVI-D compatible. Type B is a twenty nine pin connection but carries a video bandwidth double that of Type A. Type C is a mini nineteen pin connection and is used by portable units. Type D is the latest nineteen pin connection, but the plug itself is a micro version and resembles a micro-USB plug.

A number of versions of the HDMI standard have been produced and every one has been numbered progressively. The versions currently available are 1.0 to 1.2, 1.3 and 1.4 which all use the exactly the same cable but the bandwidth and capabilities have been increased with each new version. No maximum length for the cable has been specified, but the materials used in construction and the manufacturing processes, limit the practical length of the cable. The length of a HDMI to DVI cable currently varies between five and fifteen meters.

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