joe cornwall

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Thoughts On 4K, HDMI, Signal Bandwidth and the AV Signal Quality Triangle

- One thing all marketing plans need is a number. Big or small, the size doesn’t matter. Just so long as there’s a number, and ideally a single number, that can be said to correlate somehow with a product’s quality then markets will use it. You know the drill; it’s a number someone can point to and claim “If that number is bigger (or smaller), then the product is better (or worse)”. It doesn’t seem to matter if the correlation is ambiguous, or even outright misleading. Sixty years ago, the audio…

Conspicuous Convergence

- It’s an old story. For years, we’ve been hearing about how technology is “converging” to a single standard. We’ve been told that one day everything will happen “in the cloud” and that the only wires we’ll need are the AC mains that carry power into the building. Sitting in a conference room trying to connect 21st century mobile devices to fixed AV assets with 20th century connections, one might be forgiven for being skeptical. Sometimes the failure of convergence to manifest in a form that al…

The Danger Lurking at Public Charging Stations

- General Douglas MacArthur once said “There is no security on this earth; there is only opportunity.” In most things I agree with this sentiment, but there is one glaring exception. Charging my cell phone or tablet should be secure and shouldn’t be an opportunity for anyone. At the very least, it shouldn’t be an opportunity for a thief to capture my personal information, install a virus on my device or otherwise add drama to my life! I travel for business. A lot. A real lot. Over the course…

IoT Cables and Trust

- It’s been called “the infrastructure of the information society”. By the end of the decade it will have profoundly impacted the scope and evolution of residential, government and enterprise automation, management and communications networks. Businesses alone may add as many as 9 billion connected nodes or more. The Internet of Things is a storm of change existing at a granular level, generally not noticed from the perspective of day-to-day experience, where simple devices supporting simple ta…


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