Sony unveils 'Single Wire Interface Technology'
August 20, 2010 by John Messina
Sony aims to improve design flexibility, reliability and durability for mobile devices with movable mechanisms. Credit: Sony Corp.
(PhysOrg.com) -- With Sony's newly-developed 'single wire interface technology' bi-directional transmission of multiple signals, including video, audio and control signals can propagate over a single copper cable. DC power is also sent along the same cable by using Sony's unique encoding technology with DC balance.
Mobile devices are growing at an alarming rate and becoming more sophisticated in advance functionality. This has resulted in the use of additional wiring connections that's required to transmit larger volumes of data within devices.
Sony has teamed up with ROHM Co., Ltd a company that implements peripheral technologies. Sony will grant ROHM Co. a license for the IP of the digital portion of this newly-developed technology in order to advance the development of a single chip which includes both the analog and digital portions.
Sony's R&D Highlights
With Sony's unique time division duplex and multiplex system, data packets which include video, audio, and control signals can be transmitted over a single cable. Sony has also enabled bi-directional transmission of different signals by incorporating a method that retains individual synchronization.
Higher transmission speeds, up to 940 Mbps, can be achieved by using a unique multi-level encoding. Sony's newly developed hardware combines a digital portion that performs multi-level encoding; an analog portion that sends and receives signals, and a third portion that combines signals with dc power or separates them from dc power. This is illustrated in the diagram below.
Transceiver chip will provide multi-level encoding and transmission speeds up to 940 Mbps. Credit: Sony Corp.
In order to commercialize this new technology as soon as possible, Sony prototyped a chip for the analog part with the joint effort of Rohm Co Ltd; the digital part was exclusively developed by Sony. Rohm intends to combine the analog part and the digital part (license by Sony) into a chip and sell it as a transceiver chip. More information: Sony R&D
© 2010 PhysOrg.com
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Aug 20, 2010
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Aug 20, 2010
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Aug 20, 2010
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Aug 20, 2010
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Yeah, like we don't already have enough RF coursing through our brains and balls. We should use radio to communicate with something an inch away and has no reason to be separate. /snark
Aug 20, 2010
Rank: 5 / 5 (4)
That's what caught my attention... DC power on a single wire... that would be a neat trick! Route the DC return via a parallel universe?
Aug 20, 2010
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Maybe some of us like having toasty balls in the winter. And I doubt the very low power needed would do much to your genitals, unless you are using it in advanced yoga class.
Aug 20, 2010
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haha. I don't know about you, but when I pocket dial someone, it's because my testes are getting flirtatious. :)
I wish Dell used this before my laptop caught on fire at the lid hinge.
Aug 20, 2010
Rank: 1 / 5 (5)
P.S. Lid hinge? And was the laptop battery intact or no? when laptops catch fire it is because the lithium in the battery was exposed to air -- or because it was lit on fire. As a tech I'd definitely rule out the power and interface wires as the source without a probability of doubt, unless somehow you hooked them up to a neon sign transformer by accident. your power supply can't even power 1 slot in a four slot toaster.
Aug 20, 2010
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Aug 20, 2010
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Ummm, no, and...no. The 'wire' shown is a shielded cable with two insulated conductors within. (Hence, three wires.)
Second, have you forgotten Sony's, and most recently HP's, recalls? The videos of laptops bursting into flame? A battery pack contains a great deal of stored energy, and if shorted... Ask anyone who's dropped a wrench across a car battery.
Aug 20, 2010
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Aug 21, 2010
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Aug 21, 2010
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The assumption you guys a making is that it matters where the ground connection comes from (and the diagam slightly misrepresents that concept); put simply you could have a distinct ground at both locations and it would work just the same.
Aug 23, 2010
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Haha. The fact that I am a network tech is what contributed to the fire. I used to open and close my lid about 50 times a day. As someone else stated, yes, the screen power wires just shorted out. It was a very small fire, just a spot of light and plastic smoke. It was enough to get a completely new laptop, though. :)
Aug 23, 2010
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Aug 29, 2010
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