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Steve Durnin's D-Drive - re-evaluated.

Every now and again, astute Gizmag readers come to the fore to keep us on our toes - and never has this been better demonstrated than with last Friday's D-Drive Infinitely Variable Transmission article. More than 40 comments and e-mails have flooded in over the weekend questioning the D-Drive's capabilities as a true IVT, and its potential efficiencies. Furthermore, an engineering report was made available on the D-Drive website that flat-out negates some of the key claims that were made in our interview video. So let's take another look at this device in the harsh light of engineering scrutiny.  Read More

The D-Drive: it could be a gearbox revolution, if only people could understand the thing!

Ready for a bit of a mental mechanical challenge? Try your hand at understanding how the D-Drive works. Steve Durnin's ingenious new gearbox design is infinitely variable - that is, with your motor running at a constant speed, the D-Drive transmission can smoothly transition from top gear all the way through neutral and into reverse. It doesn't need a clutch, it doesn't use any friction drive components, and the power is always transmitted through strong, reliable gear teeth. In fact, it's a potential revolution in transmission technology - it could be pretty much the holy grail of gearboxes... If only it wasn't so diabolically hard to explain. We flew to Australia's Gold Coast to take a close look at the D-Drive - and it looks to us like Durnin has pulled a rabbit out of his hat. Check out the video after the jump and see if you can work out if there's a catch.  Read More

Alcatel-Lucent has boosted the transmission speeds available over existing copper infrastr...

In an ideal world we would all access the Internet over fiber optic cables that reach right up to the front door to deliver blisteringly fast transmission speeds. Unfortunately, we don’t live in an ideal world and many of us are forced to rely on aging copper network infrastructure. Now, Alcatel-Lucent’s Bell Labs has demonstrated technology that boosts the transmission speeds over two copper pairs to 100Mbps over a distance of 1km. This could see such infrastructure given a new lease of life, satisfying consumer’s need for speed for some time to come.  Read More

Yet another black box ... the  TruLink WirelessHD kit transmitter can send 1080p signals w...

The TruLink 1-Port 60GHz WirelessHD Kit lets you say goodbye to the clutter of (expensive) HDMI cables and still retain a 1080p signal via a wireless transmission between your television and your HDMI components, Blu-ray player, set-top box, gaming console, etc. Good up to 30ft line-of-sight, the 60GHz transmission capability delivers wireless flexibility in your home theater setup.  Read More

New technology developed at Purdue University could eliminate wires for communications in ...

In a step that could see communication wires banished from homes and offices researchers have developed a miniature device capable of converting ultra-fast laser pulses into bursts of radio-frequency signals. The advance could enable all communications, from HDTV broadcasts to secure computer connections, to be transmitted from a single base station.  Read More

The Wi-Fi connection in the HUB-Robeson Center at Penn State being used by students. Resea...

Sending and receiving data over a wireless network is generally undertaken via radio waves. But that's not the only method. Using the optical spectrum offers the advantage of better security and blisteringly fast transfer rates to boot. Engineers from Pennsylvania State University have now succeeded in moving data outside the usual line of sight restrictions at speeds of over one gigabit per second, more than double that achieved by Siemens recently.  Read More

Siemens' Visible Light Communication technology

If you’re like most people, you probably think that 200 megabits per second for wireless data transfer is just too darn slow! What are we, cavemen? Not anymore, apparently, as electronic engineering company Siemens just broke their own record by achieving 500 Mbps using white LED light.  Read More

The November 2, 1936, BBC broadcast using the Marconi-EMI system

Although computers and the Internet have eaten away at the dominance of television, it remains the most popular form of entertainment and source of information in the world. And with the line between TV and computers blurring with the advent of Home Theater PCs (HTPCs) and devices like Apple TV it’s likely that television in one form or another will retain its crown for some time to come. Television is no longer limited to a big box sitting in the corner of the living room. It can be accessed on sexy, slim panels hung on a wall or on mobile phones while sitting on a train. In fact television is so pervasive today it can be hard to imagine life before it existed – but there was such a time, and it wasn’t even that long ago.  Read More

The principle of optical Orthogonal Frequency-Division Multiplexing (oOFDM)

A new technology that applies the same principles used by ADSL to improve the capacity of data transfer over copper and wireless broadband could potentially increase the data capacity of optical fiber cables tenfold. It’s creators say the technology, known as optical Orthogonal Frequency-Division Multiplexing (oOFDM), offers an inexpensive way drastically boost the capacity of increasingly strained broadband networks and improve download times around the world.  Read More

MIT researchers have found a way to make light travel  one-way without reflections in a lo...

Light normally bounces off obstacles in its way, and the part of the beam that is reflected back and captured by our eyes contributes to our perception of the world around us. However, every reflection dissipates a small part of the beam's energy, and can eventually weaken it significantly. A team of MIT researchers have developed an innovative waveguide that allows microwave light to travel one way only and without reflections, paving the way to much more efficient lightwave circuits and connections.  Read More

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