Design Article
A cabling approach for HDMI interfaces in control apps
Nigel Seth-Smith, Ryan Latchman & Hossein Shakiba, Gennum Corp,
11/20/2009 11:01 AM EST
Although HDMI was developed for consumer electronics applications, it can be made reliable for use in a professional environment. This opens the possibility of using the control channels in new ways.
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Comments
Guru of Grounding
12/2/2009 11:16 PM EST
The assertion that "Consumers experience a flawless, full-featured link when sources are connected to sinks" must come from another planet. I've been intimately connected to the home theater industry for years and, in the opinion of most in the industry, HDMI is a bad joke foisted on the industry for the sole purpose of controlling content rights. It uses a connector better suited for tiny cameras that's not field repairable ... let alone allowing custom cable lengths. The device identification and handshaking most often cause nightmarish interoperability problems. The restriction of cable length, due to the extreme losses in the microminiature cables, is a real headache for installer (but a boon, I suppose, for profits on repeaters and extenders). A sensible way to move these wideband signals is coaxial cable of reasonable dimensions (remember RG-59?) as used in professional video work ... known as SDI. But then SDI wasn't dreamed up by Microsoft and a bunch of Asian giant manufacturers - with little or no input from real system designers. Bah humbug to HDMI!!
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