Lamps replace Wi-Fi

Recently, the Internet excited the news about running in Moscow city free Wi-Fi network . Fortunately, devices in which to work, users are more than enough. This practical book of the future , and the phone for divers, photographers , and a pocket notebook replacement . But for the Chinese like that, it seems, will soon become irrelevant. After all, scientists from that country have created a wireless network from the LEDs.

The replacement of Wi-Fi found scientists from the Institute for Research in the field of semiconductors Chinese Academy of Sciences. To send a signal they used conventional LEDs located at the Institute of ceiling fixtures.

I must say, the idea is very interesting. It turns out that neither the lamp, then the access point. In this case the Chinese recorded the speed of data transmission is connected to a lamp laptop at two megabits per second.

However, on some commercial uses technology developed by Chinese speech yet. First, it is not yet fully tested. Secondly, such a wireless network signal does not penetrate through obstacles such as walls. But after running technology, it is expected to be interested, for example, developers of "smart homes".

LG LX6500 budget 3D-TV

LG will offer two 3D-TV's entry-level line of LX6500. This model 42LX6500 and 47LX650 with 42 - and 47-inch screens, respectively. However, they are remarkable not only support the three-dimensional content, but elegant design with a thickness of 29 millimeters thin screen frame, which focuses producer.

Do not let us down and specifications TVs. First, a technology TruMotion 200 Hz. Secondly, the resolution of 1920x1080 pixels, ie, FullHD, so that high-quality movies with budget 3D-TV LG achieved. Not forgotten and contrast - the figure at new products is 8000 000:1. As for 3D, you need to watch it through special glasses, which are sold separately.

As it should be the device of the XXI century, new LG TV easily connects to the Internet and wireless home network. In the end, through them you can, for example, watch videos stored on your computer, or photos directly from your camera. As for the internet capabilities of novelties, there is a full range of services. This access to photo and video sharing, and video communications systems, and cognitive channels.

It is encouraging that in its budget line of TVs LG LX6500 also save energy. It says the manufacturer, thanks to the unique technologies, they consume 35 percent less electricity than the analogs.

Fujitsu Achieves World's First 25Gbps Data Communication

Fujitsu and the University of Tokyo today announced the world's first quantum dot laser- based 25 Gbps high-speed data transmission.

Quantum dot lasers are a type of laser being anticipated as a next-generation semiconductor laser capable of handling high-speed data transmissions while consuming minimal power. As increasing the number of quantum dots is known to improve a quantum dot laser's operation speed, layers of quantum dots with a higher density than conventionally employed were stacked, thereby doubling the laser's operation speed and enabling a significant improvement over previous technologies. This new technology is expected to be employed for optical sources for next-generation high-speed data communications that aim to achieve data transmission speeds of 100 Gbps, ten times faster than current data transmission speeds.

Quantum dot lasers are semiconductor lasers which employ quantum dots - nanometer-sized semiconductor particles as an active material for lasing, which Fujitsu and Fujitsu Laboratories have developed in an industrial-academic collaboration with Professor Yasuhiko Arakawa's laboratory of the University of Tokyo. Quantum dot lasers feature significant advantages over other types of semiconductor lasers, such as being less sensitive to temperature fluctuations, while offering tremendous advances over previous semiconductor lasers in terms of lower power consumption, greater transmission distances, and faster speeds. Thus, there is much anticipation for quantum dot lasers to become a core technology for developing high-performance optical sources in the future, when there will be a tremendous rise in data traffic of optical communications.

Currently, 10 Gbps transmissions are the mainstream for data transmission. However, in view of the fact that transmission speeds are continually becoming faster, currently 100 Gbps Ethernet ("100 GbE") - which features data transmission speeds ten times as fast as currently available - is being promoted as an international standard for next-generation high-speed data communications. Accordingly, there is a need for laser light sources that can handle such next-generation high-speed data transmissions, while consuming only low power.

Quantum well lasers, which have conventionally been used as optical sources for data communications, have a problem of dramatic increases in power consumption attributable to increased driving current when temperatures rise. The quantum dot laser developed by Fujitsu Laboratories and the University of Tokyo uses 3-dimensional (3D) semiconductor nanostructures to produce quantum effects, thus giving it excellent characteristics, including stable operation over a range of temperatures and low power consumption. However, the quantum dot laser had been limited to handling data transfer speeds up to 10 Gbps.

In order to increase the speed of quantum dot lasers, it was necessary to increase the laser's optical gain, which in turn required an increase in the number of underlying quantum dots. New quantum dot fabrication technology was developed and applied, resulting in a quantum dot laser capable of high-speed operations at 25 Gbps. Furthermore, this new technology also obviates the need for expensive packages with embedded temperature controllers, thereby helping to lower costs.

Fujitsu Laboratories and the University of Tokyo plan to further refine this technology to increase its transmission distance and to confirm reliability. QD Laser, Inc. is also considering commercializing this technology.

Details of the technology will be presented at the Conference on Lasers and Electro-Optics and the Quantum Electronics and Laser Science Conference (CLEO/QELC 2010), being held from May 16 - 21 in San Jose, U.S.

Microsoft Uncovers Emerging Form of Click Fraud

One lawsuit is a John Doe suit alleging that unidentified defendants engaged in this activity; the other lawsuit names Web publisher RedOrbit Inc. and its president, Eric Ralls, as defendants. Click laundering, a previously unknown form of pay-per-click (PPC) advertising fraud, was uncovered by Microsoft investigators following dramatic and irregular growth in click traffic on two sites within its Microsoft adCenter network. Investigators believe that had the click laundering scheme gone undetected, the perpetrators could have defrauded advertisers of hundreds of thousands of dollars.

"Online ad fraud is evolving in sophistication all the time. Fighting it demands vigilance and dedication to an honest and secure online marketplace. We believe that a trusted marketplace is critical to Internet commerce, and Microsoft will continue to take aggressive action working with industry and law enforcement to protect our platforms, customers and advertisers," said Brad Smith, senior vice president and general counsel for Microsoft.

PPC fraud, also known as click fraud, is a type of Internet fraud in online advertising that occurs when a person, automated script or computer program imitates a legitimate website visitor by clicking on an ad to generate a charge-per-click without having actual interest in the target of the ad?s link. Microsoft adCenter monitors click traffic carefully to prevent advertisers from being charged for non-valid clicks, and Microsoft has been active in investigating and taking action against click fraud when found, including taking legal action where necessary.

Click laundering is a newly uncovered form of click fraud in which technical measures are used to make invalid ad clicks appear to originate from legitimate sources. Through various means, including malware programs, fraudsters are able to trick innocent Internet users into visiting websites where they unknowingly click on advertisements. Click launderers also can further disguise the origin of those invalid clicks by using scripts and other methods to alter information that is sent to the ad platform.

"Microsoft is filing these lawsuits to help protect its ad platform and promote the integrity of online advertising for the benefit of all legitimate advertisers, to stop the fraudulent behavior, and to recover the damages caused by the click laundering," Microsoft said in a statement.

This week, Microsoft closed another lawsuit the company filed in 2009 regarding click fraud in auto insurance verticals and World of Warcraft, following a successful settlement with defendant Eric Lam. Terms of the settlement are confidential, but the lawsuit successfully brought the click fraud activities described in the complaint to an end and helped Microsoft further refine and evolve its approach to combating click fraud.