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22/10/2013

Li-Fi Technology

Introduction of Li-Fi Technology

In simple terms, Li-Fi can be thought of as a light-based Wi-Fi. That is, it uses light instead of radio waves to transmit information. And instead of Wi-Fi modems, Li-Fi would use transceiver-fitted LED lamps that can light a room as well as transmit and receive information. Since simple light bulbs are used, there can technically be any number of access points.

This technology uses a part of the electromagnetic spectrum that is still not greatly utilized- The Visible Spectrum. Light is in fact very much part of our lives for millions and millions of years and does not have any major ill effect. Moreover there is 10,000 times more space available in this spectrum and just counting on the bulbs in use, it also multiplies to 10,000 times more availability as an infrastructure, globally.

It is possible to encode data in the light by varying the rate at which the LEDs flicker on and off to give different strings of 1s and 0s. The LED intensity is modulated so rapidly that human eyes cannot notice, so the output appears constant.

More sophisticated techniques could dramatically increase VLC data rates. Teams at the University of Oxford and the University of Edinburgh are focusing on parallel data transmission using arrays of LEDs, where each LED transmits a different data stream. Other groups are using mixtures of red, green and blue LEDs to alter the light's frequency, with each frequency encoding a different data channel.

Li-Fi, as it has been dubbed, has already achieved blisteringly high speeds in the lab. Researchers at the Heinrich Hertz Institute in Berlin, Germany, have reached data rates of over 500 megabytes per second using a standard white-light LED. Haas has set up a spin-off firm to sell a consumer VLC transmitter that is due for launch next year. It is capable of transmitting data at 100 MB/s - faster than most UK broadband connections.

How Li-Fi Works?

Li-Fi is typically implemented using white LED light bulbs at the downlink transmitter. These devices are normally used for illumination only by applying a constant current. However, by fast and subtle variations of the current, the optical output can be made to vary at extremely high speeds. This very property of optical current is used in Li-Fi setup. The operational procedure is very simple-, if the LED is on, you transmit a digital 1, if it’s off you transmit a 0. The LEDs can be switched on and off very quickly, which gives nice opportunities for transmitting data. Hence all that is required is some LEDs and a controller that code data into those LEDs. All one has to do is to vary the rate at which the LED’s flicker depending upon the data we want to encode. Further enhancements can be made in this method, like using an array of LEDs for parallel data transmission, or using mixtures of red, green and blue LEDs to alter the light’s frequency with each frequency encoding a different data channel. Such advancements promise a theoretical speed of 10 Gbps – meaning one can download a full high-definition film in just 30 seconds.

11/10/2013

Sony’s new curved LED television is bigger than rival curved screens

Read more: http://www.digitaltrends.com/home-theater/sony-debuts-65-inch-curved-led-tv/
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Within weeks of LG and Samsung’s curved OLED TV launches comes word that Sony has developed its own curved television. During an event at Lincoln Center in New York today and in anticipation of IFA 2013, Sony announced the 65-inch KDL-65S990A LED television, due to hit stores in October for $4,000. Before getting too excited, though, take special note: We said LED, not OLED.

10/10/2013

Testing eCall systems: how to benefit from synergies with existing GSM test platforms

The automotive eCall (emergency call) system is an emergency cellular communication service that will become mandatory in vehicles introduced in Europe after 2014.

In the event of an emergency or accident, the eCall e112 flag system will provide the ability to call the local emergency services via a Public Safety Answering Point (PSAP) using any available cellular network. While eCall will not prevent accidents, it will speed the arrival of emergency assistance.

A key requirement is that data and voice calls must use the same voice channel because SMS and GPRS do not provide the necessary service priority or availability. Routing data over the voice connection will enable eCall to use the e112 routing protocol standards deployed in the existing cellular network.
- See more at: http://www.newelectronics.co.uk/electronics-technology/how-to-benefit-from-synergies-with-existing-gsm-test-platforms/49075/ .AhrFBWby.dpuf

10/10/2013

With Carbon Nanotubes, a Path to Flexible, Low-Cost Sensors: Potential Applications Range from Air-Quality Monitors to Electronic Skin

Carbon nanotube-based gas sensors created at TUM offer a unique combination of characteristics that can't be matched by any of the alternative technologies. They rapidly detect and continuously respond to extremely small changes in the concentrations of gases including ammonia, carbon dioxide, and nitrogen oxide. They operate at room temperature and consume very little power. Furthermore, as the TUM researchers report in their latest papers, such devices can be fabricated on flexible backing materials through large-area, low-cost processes.

Thus it becomes realistic to envision plastic food wrap that incorporates flexible, disposable gas sensors, providing a more meaningful indicator of food freshness than the sell-by date. Measuring carbon dioxide, for example, can help predict the shelf life of meat. "Smart packaging" -- assuming consumers find it acceptable and the devices' non-toxic nature can be demonstrated -- could enhance food safety and might also vastly reduce the amount of food that is wasted. Used in a different setting, the same sort of gas sensor could make it less expensive and more practical to monitor indoor air quality in real time.

10/10/2013

Japan robot can pick strawberry fields forever for farmer

A robot that picks ripe strawberries as the farmer sleeps was unveiled in Japan on Wednesday, with its developer saying it could cut workloads by two-thirds.

The device, which can gather a piece of fruit every eight seconds, uses three cameras to determine which strawberries are ready to pick before darting out an arm and snipping them into its basket.

The two-metre (6ft 6ins) robot moves on rails between rows of strawberries, which are usually grown in elevated planters in greenhouses in Japan.

It "calculates the degree of ripeness from the colour of the strawberry, which it observes with two digital cameras", said Mitsutaka Kurita, an official of Shibuya Seiki which developed the machine.

"It also uses the images from the two cameras to calculate the distance from the target, then approaches the strawberry it is aiming at," he said.

A third camera then takes a detailed picture of the fruit, which it uses for the final calculation before moving in for the snip.

Strawberry farming is highly labour-intensive, requiring 70 times the input that growing rice requires and twice that of tomatoes and cucumbers, said a statement from co-developer the National Agriculture and Food Research Organisation.

"This robot would harvest two-thirds of strawberries during the night when growers are sleeping," Kurita said.

"The farmer can then pick the rest of the strawberries that the robot couldn't get at," he said.

The robot will be on sale early next year for about five million yen ($50,000).

Strawberries are available all year round in Japan, where they usually cost at least 500 yen for a small punnet.

Read more at: http://phys.org/news/2013-09-japan-robot-strawberry-fields-farmer.html

10/10/2013

IOS and Android Apps for Cats

A smartphone is pretty personal thing, but a tablet is not the same, and it is frequently used by several people at the same time, sometimes a whole family. “If you allow your husband, wife, grandfather, grandmother or child to use your tablet, why not to give this right to your cat as well”, developers. thought So, in this article we will talk about a few “cat-like” mobile applications for Android.

There are dozens of programs in App Store and Google Play such as “applications for cats”, and the most popular programs here are games. The plot, if that word applies to a cat’s game, is the same: an object moves across a screen, designed to draw a cat’s attention to it and make your cat violently smash with its paw on the screen, hoping to catch a prey. Many cats are offended because they are fooled in all cases.

Top 5 Android applications for your cat include the following programs:
1.Game for Cats
2.Paint for Cats
3.Cat’s translator
4.Catch and Paint Games for Cats
5.Pocket Pond

10/10/2013

How to Enhance Your Android Security

Use the Android In-Built Security

A lot of users may save the passwords to the online accounts and services on their mobile device, not even thinking of what can happen when the thief gets an access to their own cell phones. Avoid having every important password stored in the smartphone, especially when it comes to payment applications or banking. If you are running on Jelly Bean, he may have an encryption and screen lock enabled for further enhancing your security. There are several types of screen locks available for you to select from in the Android settings: face unlock, pattern, pin and password present.

Lock Your Applications

It is very important to lock your applications, particularly the ones that contain private info which you want nobody to see. It is a second security layer for preventing the lost device to be used by anybody, especially if they managed to bypass the locked Android. You may use a free application such as App Lock for the exact purpose. The idea over here is never to lock all the apps in the device, only data-laden ones such as your file managers and email applications. Try to avoid using the combination of a pattern or pin lock which could be traceable from smudges of the screen. Before you start installing the application from Google Play, list of the requested permissions would pop up for showing you what permission the app requires. Applications require permissions for doing various things but not all are necessary. It is recommended to read through all of them carefully for making certain that they make good sense and correspond to the function of application. For instance, an alarm application doesn’t require the permission for accessing the text messages. It is a very important step as not all the applications at Play store are safe.

Use the Mobile Security Application

A very important thing about the protection of your Android is securing the network. Avoid using public Wi-Fi while doing something important such as online banking. It would make your job easy to have an app which handles your security issues. Try to find such mobile security application that you are comfortable with, for instance, Avast! Mobile Security or Lockout Security & Antivirus.

Prepare The Data Backup

If you have got an Android tablet and have to share it with your kids, spouse or sibling, making multiple accounts would help you protect the privacy. Without a backup of the data you may lose all important info in the device as you won’t be able to restore the Android device to the original state. You may choose to back up the important information to cloud, the desktop or even to the flash drive to be 100% ensured.

Enable The Remote Wipe

It helps you getting your lost device back. The Android smartphones are made to be traceable via GPS. All you have to do is to enable GPS on the phone for tracking. There is also the ability for wiping the data from the device remotely. It is only done when you get your phone lost and you are worried about its privacy.

You can choose a very effective application that has been especially designed for performing security and spying related tasks (for example, mSpy, Mobistealth). You may install it on your Android device for monitoring; your device has been stolen or lost. Such apps will help you track the location of your lost or stolen device by using GPS technology.

10/10/2013

The Advancements in Wireless Technology:

Isn’t it amazing how far wireless technology has taken us? Almost all of our computer and gaming devices are running wireless nowadays. Radio navigation, cellular phones, televisions and practically anything you can think of is running wireless. Without a doubt, this is one of the most popular technologies being used. Gone are the days when people thought it was impossible to interconnect networks with one another. Now, even networks located in different parts of the world can connect wirelessly without a hassle! Here are more benefits of the advancements of wireless technology

Less Cost on Cables

You might not think that this is a life changing benefit but it actually is. Monitoring, connecting, setting up and maintaining 1 foot of cable is up to $2,000 USD. This includes asset protection as well. Of course, if your system runs through wires, you will need to insure the cables to make sure that you don’t get it damaged otherwise you will have trouble with your whole system.

Simplified Installation Processes

Eliminating wiring can make it easier on the installers. Have you ever waited days for your internet service provider to install your internet connection? Their reasons – wiring issues, installing cable boxes, looking for perfect locations and many more. Today, the internet installation takes minutes because of wireless technology.

Great Applications

Product design and company operations have become a lot easier for many corporations because of wireless technology. For instance, airplane design developments and production has become easier. In fact, the dynamics have become so good because of how fast and reliable wireless technology is. Industrial monitoring also benefits from this technology as many data from different kinds of sources are gathered in a single database in seconds. For example, you all know how fast SMS is. It rarely happens that you get delayed messages or have a problem sending not unless a nationwide outage is happening. Wireless is reliable. That is why more and more people depend on it each day.

Mobile Business

Gone are the days when running a business meant sitting on your office the whole day. These days, wireless technology enables you to send and receive information while you are on the move. If you a travel, you get to go online right away when you land in an airport, when you check in at a hotel or when you dine in a restaurant. With your phone’s 3G capabilities and your laptops wireless switch, you can practically do business anywhere. You can remotely access a wide spectrum of departments on your business deals and integrate it into one data even if you are far from each other. In general, no matter where you are or what you are up to, you can increase your productivity without having to report to an office daily.

In a nutshell, wireless technology is impossible to live without now that it is here. Good thing that the third generation of wireless power is well on its way on being developed. It pays to know these advancements in advance so you can use them to your advantage, business or personal wise.

10/10/2013

China’s Leading Search Engine Is Playing Catch-Up in Mobile

Baidu claims 82 percent of China’s Web-page searches, but the company is struggling to hang on to mobile users. Although Baidu Chief Financial Officer Jennifer Li puts the company’s share of mobile search at “well above” 50 percent, its total search share has fallen in the past year, IResearch data show. As Baidu’s share drops, rivals such as messaging powerhouse Tencent (700:HK) and software maker Qihoo 360 Technology (QIHU) see opportunities to gain ground in mobile by luring users with games and other apps.

Baidu is fighting back with a spate of acquisitions. In May it spent $370 million to buy PPS TV, a peer-to-peer streaming video network. Baidu spokesman Kaiser Kuo says PPS, combined with Baidu’s homegrown video site, IQiyi, will make it No. 1 in China for mobile video viewing. To compete with Alibaba and Tencent for app revenue, Baidu in July paid $1.85 billion for 91 Wireless, a mobile-app store. On Aug. 23, Baidu announced a $160 million deal for group-buying site Nuomi.com. The company says it’s teaming with smaller businesses to develop and host mobile shopping apps, taking a cut of app-generated sales.

These moves add up to an expensive bet on mobile. The 91 Wireless deal was the priciest in China’s Web history and valued the company at 16.7 times 12-month sales. Nuomi was valued at 12.7 times sales. To put that in perspective, Amazon.com (AMZN) is valued at only two times its sales. Baidu also has sold $2.5 billion in bonds since November.

10/10/2013

Intel Finds Its Digital Heartbeat in a Teeny-Tiny Chip

In 1965, Intel’s (INTC) co-founder Gordon Moore authored a paper that attempted to clue people in to a coming era of technological wonder. Cheap transistors, he wrote, would eventually lead to things like personal computers. A cartoon included in the paper showed the machines being sold in department stores alongside “notions” and cosmetics. What’s more, people could expect to see “a proliferation of electronics” that would likely include clever wearable devices like smart wristwatches.

The paper (PDF) reads as so prescient that you come away feeling like Moore must have had a crystal ball at his disposal. And yet, if he did, he didn’t share it with other executives at Intel. Here we are in 2013, and Intel has only just come out with a product capable of fulfilling Moore’s vision. It’s called Quark, and Intel unveiled it at the company’s flagship customer conference on Tuesday in San Francisco.

Compared with Intel’s chips that go into servers, PCs, and even smartphones, Quark is a pipsqueak. It’s about one-fifth the size of Intel’s smallest chips and consumes about one-tenth as much power. Intel bills Quark as the type of chip that could make its way into those watches championed decades ago by Moore and eventually into even smaller things like body sensors.

Intel is late to the game—and how—with this type of technology. Dozens of companies make so-called microcontrollers and embedded processors that go into things that need a bit of computing oomph, ranging from something like a Fitbit step tracker to a dishwasher. These smart devices have come to be sold under the Internet of Things banner and are expected to get smarter and do more over time.

Executives from Intel have spent years talking up the company’s plans to be the “digital heartbeat” behind all manner of products. The marketing team liked to champion the idea of Intel Everywhere rather than the old Intel Inside that accompanied the PC revolution. Truth be told, though, Intel did not really have a product to sell alongside the marketing shtick.

Historically, Intel has been able to sell its chips for tens, hundreds, and even thousands of dollars each, producing just about the highest profits in the industry. But microcontrollers and the like sell for dollars and pennies each, which explains some of Intel’s reluctance to charge into the market. Intel’s large, complex, and hot chip designs have also been ill-suited for running inside tiny devices.

With Quark, Intel will go up against companies such as Renesas Electronics (RNECY) and Freescale Semiconductor (FSL). It plans to show off products based on the chip next year, which should make Moore smile.

09/10/2013

Wireless devices go battery-free with new communication technique:

Using ambient backscatter, these devices can interact with users and communicate with each other without using batteries. They exchange information by reflecting or absorbing pre-existing radio signals.

09/10/2013

Archos relaunches Platinum Series tablets:

Back in February, Archos announced three new Platinum tablets that appeared to offer top-shelf specs for wallet-friendly price tags. Sadly, only the two smaller models enjoyed a brief limited release in mostly Middle East regions, until now. The French portable consumer tech manufacturer has spruced up the Elements devices and issued a direct challenge to top-brand tablet makers like Apple and Samsung with the launch of the new Platinum Series tablets. The 116 Platinum of old has been swapped for a 10.1-inch device, which joins a 9.7-inch Retina rival and an 8-inch model. The three Android slates each feature a HD touchscreen, a quad-core processor, powerful graphics, and dual-band Wi-Fi.

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