Monday, January 30, 2012
Friday, January 20, 2012
Researcher Adds Photovoltaic Cells to OLED Screen, Starts on Path to First Self-Sustaining Smartphone
Ahnood created photovoltaic cells that line the back of and sides of an OLED display in order to capture some of this 64% of wasted light. The result? Free, harvested energy that can subsequently be used to power the phone or charge the battery. In other words, you now have a nearly self-powering smartphone.
The best part is that Ahnood's cells take the form of a thin film, similar to OLED and LCD displays themselves. Ahnood's idea is to bond this photovoltaic layer to the stack of films that make up an OLED display, which would ultimately produce OLED screens that automatically harvest wasted light. In addition to that, because OLED and LCD screens are not 100% opaque, these thin photovoltaic cells will gather ambient light from overhead lights or the sun.
As of right now, Ahnood's system only consists of a supercapacitor and some circuitry and only has an 11% efficiency rating. This is very low considering that commercial photovoltaic cells are reaching 30%, but Ahnood's is free energy. Ahnood's system can currently output a total of 5 milliwatts for a 3.7" smartphone screen, which is definitely a step in the right direction.
Ahnood's next step, as well as the next step for all the other researchers at the London Center for Nanotechnology, is to experiment with designs and materials to get the efficiency up to 90%. Once they get to that point, the system could extend the life of a phone battery by a few hours. Add in some more energy harvesting technology and we could very well see smartphones that can last more than a day on a single charge.
Source: ExtremeTech - Smartphone screens with built-in solar cells
IEEE Spectrum - Solar Cells in Smartphone Screens
Engadget - Arman Ahnood teases OLED display with solar cells, idealizes the self-sustaining smartphone
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Friday, January 13, 2012
But even though Elop and Nokia divulged a lot in terms of the phone itself, what they carefully left out of the unveiling was precise information on availability and pricing of the Nokia Lumia 900 Windows Phone on AT&T. AT&T wasn't much help either, as they too left out any specific mention of a final release date or final pricing scheme.
A Nokia Developer Newsletter that has been circulating around the internet gives a little detail about when and where we will see this phone saying that the Nokia Lumia 900 "will become available exclusively through AT&T in March." In addition to that, netcast hosts Paul Thurrott and Mary Jo Foley from Twit.TV gathered from sources of their own that the Nokia Lumia 900 will be available come March 18, just slightly more than two months after its debut at CES 2012.
Neither of these dates were confirmed by Nokia or AT&T at CES and neither company stated anything about pricing whatsoever, leaving people something to speculate about. Between now and March 18, on the other hand, there is another big electronics show set to take place at the end of February in Barcelona. This one is quite possibly more important for mobile device makers than CES, so you can expect Microsoft, Nokia and possibly even AT&T to give us a little more information about the Lumia 900 there.
Source: Engadget - Nokia Lumia 900 Coming to retail on March 18?
Pocketnow.com - Nokia Lumia 900 Expected on AT&T In March Says Dev Newsletter
Most business class projectors will do a good job displaying your PowerPoint presentation. If you have a small presentation group, a 2000 lumen LCD projector will be able to produce a nice and clear picture. For larger audiences you should consider a 5000 lumen LCD projector.
Friday, January 6, 2012
The e2251Fwu is perfect for business, gaming and entertainment use with its integrated USB port and high picture quality. If you are in the habit of running multiple applications, this is definitely a product you should look into. AOC states that the 22" USB monitor should be available in February for $199 and will also be showcased at the Bellagio, Monet 3 Ballroom at the 2012 Consumer Electronics Show set to take place next week in Las Vegas.
According to Marketing Manager for AOC Robert Velez, "The 22-inch USB Monitor makes multi-screen computing more practical than ever with its plug-and-play setup, cord independence and low power consumption."
The e2251Fwu is extremely light and very thin and is an LED-backlit LCD monitor that comes with full 1080p HD resolution, 20,000,000:1 dynamic contrast ratio, 200cd/m2 brightness and a 5ms response time. The LED backlighting allows the monitor to consume 50% less energy than most monitors and the monitor itself features a removable stand that allows it to instantly transform into a digital picture frame or presentation display.
Integration with other desktop or notebook computers is easy thanks to the DisplayLink chip and the device itself is also supported by Windows XP, Windows Vista, Windows 7, Mac OS X Tiger, Mac OS X Snow Leopard and Mac OS X Lion. In addition to that, Linux support is available through many standard distributions. Full specifications include:
- USB-powered LED display
- 250cd brightness
- 20,000,000:1 Dynamic Contrast Ratio
- 5ms response time
- 1,920 x 1,080 resolution at 60Hz
- HDCP compatible
- 10.6mm thick
- Supported on all leading operating systems including Windows, Mac OS X and Linux
Source: Engadget - AOC reveals 22-inch, USB-powered 1080p monitor