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HDMI Growth

 

Web-connected devices are going to multiply in homes and cable systems will become simplified.

 

Instead of cables being everywhere, behind your entertainment centre, under cupboards, along the floor with loops and twists, you can now get by with fewer cables thanks to this new 1.4 version of the High-Definition Multimedia Interface.

 

 

 

From 2003 HDMI cables have shown significant growth.

Rapid growth of HDMI to 2009

Graph shows 1 billion units will be installed this year.

Graph of HDMI Growth - Last 5 years

Stop Press Kordz Cables voted the best

KORDZ is crowned "Best HDMI Cables" in the Smarthouse Magazine Trio Awards for 2008. This follows the award earlier this year for "Best Cable Range 2008" in the Smarthouse Best-of-the-best awards.

The BEST cables can therefore be defined as those of which get the signal from source to sink as intact as possible, having the absolute least influence on what’s travelling inside.

They cannot improve the signal from the source (as some may claim), without active intervention that is, but rather leave the signal alone and just pass it through with purity and transparency... that’s our job at KORDZ®.

It’s rather ironic for us as a cable manufacturer that we’ve done our job best when your system performs like there are no cables there, but instead performs like a direct connection!

HDMI Cables Evolution Series

HDMI uses a time based transmission format, TMDS, (Transition Minimized Differential Signaling,) and as such is subject to jitter errors where jitter is the fluctuation in the timing delivery each digital bit.

Also, HDMI is based on twisted pair cabling, and hence is also subject to skew errors, which are delivery and interaction based errors either between the two cores in a twisted pair (intra-pair skew), or errors occurring due to unwanted interactions between twisted pair groups (inter-pair skew). This is more a function of quality of cable construction and length. So HDMI is subject to both jitter and skew... hmmm, not so good.

But wait, there's more... whilst Dolby Digital® and DTS™ are both 'packet data' based, their bitsreams are embedded into the TMDS stream in between the larger video data strings, and hence their delivery is also subject to the same errors as the picture. However it's just the data packets that are carried in modular form, but they are still data packets.

In the presence of enough jitter and/or skew to result in visual degradation of the picture, the data packets may lose enough information to not be decoded 100% completely.

This is the reason why you may sometimes have an HDMI connection with operational video (albeit degraded), but lose audio altogether. You can't decode a partial signal, remember it's all 1s and 0s - black and white, no grey. True of Dolby Digital® and DTS™. So if you lose audio in your HDMI connection, you're probably also inadvertently degrading the picture to a noticeable degree, even if it still appears complete.

KORDZ is crowned "Best HDMI Cables" in the Smarthouse Magazine Trio Awards for 2008. This follows the award earlier this year for "Best Cable Range 2008" in the Smarthouse Best-of-the-best awards.

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Kordz. Home of HDMI  http://kordz.com
 
 

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