Posts Tagged ‘Technology’

Christian Kandlbauer mind-controlled arm prosthesis

A mind-controlled robotic arm is bringing new independence to an Austrian man who lost his arms, even allowing him to drive a car, the arm’s maker announced earlier this week. Christian Kandlbauer passed his driving test “with flying colors” using a mind-controlled arm prosthesis. Created by the German firm Otto Bock HealthCare, the arm has allowed 23-year-old Christian Kandlbauer to pass a driving test with flying colors, giving him the freedom to drive the seven kilometers to and from work each day without assistance. The device is the first mind-controlled arm prosthesis in Europe. After a high-voltage electrical accident struck Kandlbauer back in 2005, both his arms had to be amputated. His right arm has since been replaced by a myoelectric DynamicArm, which now operates the steering wheel when he drives his specially equipped Subaru Impreza, modified for him by Paravan. Taking the place of his left arm, however, is the new, seven-jointed prosthetic arm, which he controls in real time using just his thoughts. He now operates that arm to control the direction indicator lights, horn and all other safety-related devices of his vehicle.

Targeted Muscle Reinnervation

The prosthesis is based on targeted muscle reinnervation (TMR), a process by which four key arm nerves are systematically relocated to the surgically segmented chest musculature. Once reinnervation is complete — it can take several months — the surface of the chest forms an interface to the patient’s brain. Electric nerve impulses coming from this region can actually be sampled and processed by surface electrodes, according to Otto Bock. Now, powerful micro-controllers in the prosthesis calculate the motor commands underlying the impulses in real time and generate the equivalent control commands for the arm. For Kandlbauer, who works in a garage, it’s been a dream come true. He obtained his driver’s license in October and has been traveling back and forth to work in his own vehicle ever since.

‘An Important Extension’

“What’s remarkable about the Otto Bock prosthetic technology is the way they have re-engineered the nervous system to make the prosthesis more useful,” James Cavuoto, editor of Neurotech Reports, told TechNewsWorld. “Innovative strategies like this will likely grow the market for motor prostheses in the years ahead,” Cavuoto added. Indeed, following 10 years of pioneering work in TMR, “it is exciting to see this promising new source of command signals being applied to commercial, clinical prostheses,” agreed Gerald Loeb, professor of biomedical engineering at the University of Southern California. It’s not clear whether it’s truly a case of “mind-control,” however, “particularly because other researchers have been working — with much less success — on reading out command signals directly from the brain, where the term seems more appropriate,” Loeb told  Nevertheless, TMR is “an important extension of the original concept of myoelectric control because it enables users to operate multiple degrees of freedom in a way that is much more natural and intuitive than has been possible before,” he explained. “That sort of command capability is essential to take advantage of the much more sophisticated mechatronic hands and arms that are being developed by several research and commercial groups, including Otto Bock,” Loeb added.

A High-Tech Index Finger

Otto Bock is also working on a “high-tech index finger” for Kandlbauer that can sense temperature, identify rough and smooth surfaces and feel the strength of a handshake. “Micro-sensors that record the temperature, gripping strength and surface characteristics of the object being gripped are integrated into the tip of the index finger on the prosthetic hand,” explained Hubert Egger, head of the mind-controlled arm project. Currently, however, the prosthesis with sensory perception is only a prototype. It will likely take another four years of development before Kandlbauer can use it on a day-to-day basis, Otto Bock said.



Read Full Post »

4G also called as Fourth-Generation Communications System, is a term used to describe the next step in wireless communications. A 4G system can provide a comprehensive IP solution where voice, data and streamed multimedia can be provided to users on an “Anytime, Anywhere” basis. The data transfer rates are also much higher than previous generations.

3g-to-4g14G is the latest phenomenon to metamorphose the cellular superhighway, soon to succeed its predecessors 3G and 2G.G stands for the generation in mobile technology that have come of age maturing down the line over 20 to 30 years. The first generation mobile technology were based on analog telecommunication standards. 2G technology evolved in 1990s, introducing digital circuit switched transmission and SMS text messaging. This was followed by a big leap in the form of 3G, aka IMT-2000 that marked the major advances in mobile technology including efficient data handling enabling video calls, accessing websites in oiginal format and much more. For 3G what better example can you have if not iPhone 3G. 4G system is anticipated to revolutionize the functioning of communication networks with comprehensive and secure IP based solution facilitating voice, data and streamed multimedia Anytime, Anywhere and with much higher data transfer rates than its predecessors.

4G- Blueprint of Goals

4G mobile is under the process of being established according to the set standards. It’s features are more of a blueprint based on goals rather than requirements.  Let’s take a snap of the goals set for 4G

  • Faster data transfer rates
  • Enhanced security measures than its predecessors
  • Reducing blips in transmission when a device is moved from one networks coverage to another
  • 4G mobile networks should also use a network based on the IP address system that is used for Internet

One World One device: Global roaming in 4G


The fourth generation would completely transform the mobile phone networks, in to end to end IP based networks, couple this with the arrival of IPv6.  With a unique IP address for all devices in the world, it would initialize full IP based communications from a mobile device right from the core of web.

It would truly harmonize global roaming, super high speed connectivity and transparent end user performance on every mobile communications deice in the world.

Once on the stage is set, 4G would offer 100 Mbps to roaming mobile device globally and around 1 Gbps to a stationary device. Clearly, this could have wider implications including overwhelming wireless performances like enhanced video conferencing, streaming panoramic video and much more.

The giant leap would require a massive infrastructural makeover in the phone networks – multiplying the traffic load on the internet as a whole. 4G needs swifter backbones and oceanic links for a smooth run. For paralleling things, think of 1 billion 100mb nodes attached to a network over night.

Who’s using 4G?

There are two major systems in U.S, which are using the 4G mobile technology  – WiMax, backed by Clearwire and Long Term Evolution or LTE. WiMax’s majority owner is Sprint Nextel. They had started testing services in Baltimore in 2008 and waiting to expand their coverage over 80 cities by the end of 2010.

Long Term Evolution is backed by Verizon. According to cnet, Verizon has completed initial 4G wireless test, but not available for widespread use until 2012.

WiLAN and 4G Network technologies have signed a U.S $ 31 million purchase order as a part of 5 year supply agreement to build a fourth generation cellular network throughout US

Well, 3G is yet to reach its zenith and 4G couldn’t be an overnight phenomenon. In such a situation we can just keep our fingers crossed. There’s an air of speculation that suggest the fourth G would take on the mobile world by 2010. For the time you can just wait and watch our updates.

The main objectives of 4G are:
1)4G will be a fully IP-based integrated system.

2)This will be capable of providing 100 Mbit/s and 1 Gbit/s speeds both indoors and outdoors.

3)It can provide premium quality and high security.

4)4G offer all types of services at an affordable cost.

4G is developed to provide high quality of service (QoS) and rate requirements set by forthcoming applications such as wireless broadband access, Multimedia Messaging, Video Chat, Mobile TV, High definition TV content, DVB, minimal service like voice and data, and other streaming services.

4G technology allow high-quality smooth video transmission. It will enable fast downloading of full-length songs or music pieces in real time.

The business and popularity of 4Gmobiles is predicted to be very vast. On an average, by 2009, this 4Gmobile market will be over $400B and it will dominate the wireless communications, and its converged system will replace most conventional wireless infrastructure.

Data Rates For 4G:

The downloading speed for mobile Internet connections is from 9.6 kbit/s for 2G cellular at present. However, in actual use the data rates are usually slower, especially in crowded areas, or when there is congestion in network.

4G mobile data transmission rates are planned to be up to 20 megabits per second which means that it will be about 10-20 times faster than standard ASDL services.

In terms of connection seeds, 4G will be about 200 times faster than present 2G mobile data rates, and about 10 times faster than 3G broadband mobile. 3G data rates are currently 2Mbit/sec, which is very fast compared to 2G’s 9.6Kbit/sec.

Source:wise Geek4G technology

Read Full Post »

Moore’s Law states that :

“The number of transistors and resistors on a chip doubles every 18 months.”

(So in effect the processing power increases )

The current Scenario :

For long Nvidia and Intel have been debating on their varying perspectives and visions on the future of multi-core computing technology. It appears that Nvidia’s VP,  Bill Dally, has stood his stance against the principles of ‘Moore’s law’ stating that, “Moore’s Law is dead”. However, it is to be noted that ‘Moore’s Law’ is arguably the base of Intel’s multi-core architecture and the technology employed in fabricating its processor chips. Looks like Intel’s relentless pursuit in adopting Moore’s vision and the fact that AMD’s principles are also guided by this doctrine brings up a whole new equation in this battle of world’s leading chipmakers.

Mr. Dally is reported to have reiterated his stance by stating that parallel computing remains the hub of Nvidia’s GPU architecture and that dual, quad- and hex-core solutions are inefficient. He further adds that, building multi-core GPU’s is like “trying to build an airplane by putting wings on a train,” and that “only ground-up parallel solutions designed for energy efficiency will bring back the golden age of doubling performance every two years”. While all these ideas and visions sound impressive, Nvidia has a long road ahead in accomplishing both energy efficiency and high performance together as a landmark milestone.

Read Full Post »

A playable … logo? That’s exactly what web giant Google has today, in celebration of the 30th anniversary of Pac-Man‘s Japanese release. The doodle (Google’s term for its event and holiday-specific logos) is accessible on its main page and is a full 255-level game complete with a 256th level “kill screen,” just like the original coin-operated one.

Also if u click the insert coin button near the search box of the doodle you can enter in two player mode and the second player can use the wasd keys to play !
The interactive doodle — a first for Google — is the brainchild of senior user experience designer Marcin Wichary, whose earliest exposure to Pac-Man came at age five while traveling across his native Poland with his father, a game technician, to repair arcade machines. Wichary worked with Google doodler (yes, it’s a real job) Ryan Germick to create the finished design.

It can get a little annoying after a while, especially if you have a habit of visiting Google frequently !

Read Full Post »

What started as an ordinary seminar presentation on a strict syllabus topic turned out to be quite interesting…

Hats off to Anuraj & Sangeeth Of S4 D (CEC 20012)  for improvising a slide show for the same, without which it would have been boring !

The topic was CDMACode Division Multiple Access

Download the slide shows :

Related Video :

Venue : Seminar hall

DATE : 24th Feb 210

Read Full Post »

As a second step to control key components of the internet backbone Google ventures into fibre optic network business. So what was the first step?
For those who don’t know, last December Google public domain name system (DNS- It’s like a switchboard that converts the textual domain name that u type or click or search or into the corresponding IP numerical address.

So what does this offer in a business point of few? So google on becoming a major DNS & fibre network provider they could collect even more data and use that to make their ads and search results more relevant.

Now coming back to recent development- the experimental fibre optic network. Google aims to provide this to 500,000 homes (in USA) and also to ISPs to make bandwidth intensive applications common to all , which include 3D games & 3D movies to your HDTV. Even more Google plans to give all this to the home users at competitive prices, which is threat to all the telecom giants.

Related Video :

Read Full Post »

« Newer Posts