Living in a Multi-Screen World

Screens Will Cooperate Rather Than Compete for the Users' Attention

by Dick Selwood

What is a K or k? If you are in the world of SI units, then k is the magnitude symbol for 103 (= 1,000). In computing, we are accustomed to K meaning 1024. So when you see 4K for a video standard should you be expecting 4000 or 4096 pixels horizontally? When you visit the cinema, then the 4K projector uses 4096 pixels, but if you are buying a new television badged as 4K then you will get a screen that is only 3840 pixels wide! The new Ultra High Definition (UHD) screens that TV manufacturers want you to buy this shopping season have a screen definition of 3840 by 2160 pixels – just double the HDTV standard of 1920 pixels.

But UHD TV screens are just one part of today's multi-screen world. How many screens do you own? The man who was sitting opposite me on the train today had four on the table: two cell phones, an e-book reader and a laptop computer.  Read More


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Editors' Blog

A More Secure Time Server

posted by Bryon Moyer

Time servers allow us to track multiple events from different systems and networks with a consistent time base. But an evildoer can flood such servers with requests, causing crashes. Microsemi has released a new time server that addresses this vulnerability. (13-Jan)

Fancy walking around with urine in your socks?

posted by Dick Selwood

A team at the University of the West of England has used urine driven microbial fuel cells in socks to generate enough current to send wireless signals. (11-Dec)

Securing the core

posted by Dick Selwood

A Franco-German announcement brings improved security to SoCs for the IoT (17-Nov)

Four weeks of argument over a second

posted by Dick Selwood

The ITU is arguing over whether we need a leap second (2-Nov)

Single-Radio Zigbee and Thread

posted by Bryon Moyer

Zigbee and Thread packets can now be funneled through a single radio. Where might that be useful? (22-Sep)

Communications Editors' Blog Archive

 

forum

PNI Turns Navigation, Kalman Upside Down

Posted on 02/08/16 at 9:07 AM by bmoyer

bmoyer
What do you think of PNI Sensors' approach to reducing GPS-reading power?

Xilinx 1, Intel 0

Posted on 02/06/16 at 1:06 PM by beercandyman

I'll just point out that TSMC 16nm is really just 20nm with a finfet. I'll also point out that the latest part from Xilinx is just a little bigger than their last part. Altera did a big change in the architecture of the Stratix 10. For example single prec…

Magnets Help the Harvest

Posted on 02/04/16 at 10:07 PM by TotallyLost

TotallyLost
In the first case with the fan and magnets, anything that increases loading of the fan, will incur losses in the fan motor, in addition to what is coupled off.

Now assuming you really need to move the air for cooling something, then the proper engineer…

Magnets Help the Harvest

Posted on 02/04/16 at 11:24 AM by bmoyer

bmoyer
What do you think of these magnetic energy harvesting ideas? Attractive? Repulsive?

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