Taking A Closer Look At 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.
The cables primary use is for connecting Play Stations, Xboxes, set-top boxes, DVD players and Audio Video receivers with High-Definition TV’s, computer monitors and many other audio visual 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.
Rapidly approaching the de facto industry standard for HDTV, the marketing group In-Stat says that ninety percent of all high-definition TV sets manufactured in 2007 were fitted with the interface. Subsequently, In-Stat reported that 229 million of the devices were purchased in 2008 followed by a further 394 million in 2009. They further predicted that by the end of 2009 every digital TV would have HDMI installed.
The connector is manufactured in four different types, namely A, B, C and D. Type A has nineteen pins and is compatible with DVI-D. Type B has 29 pins and will transfer double the bandwidth of the Type A. Type C has a mini connection with 19 pins like the A type and was designed for portable equipment. Type D is a micro connector also with 19 pins but the plug has been shrunk to look more like a micro-USB one.
Several versions of the HDMI standard are in production and each one has been given a number. At present, versions 1.0 to 1.2, 1.3 and 1.4 are being used and all of them use the same cable with the transmission bandwidth and capabilities being upgraded for each version. A specification for maximum cable length has not been established but the materials used and the method of manufacture are limiting factors to practical cable lengths. HDMI to DVI cable is currently available in 5 to 15 meter lengths.
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