Internet Access Through Cable TV Network

Internet Access via Cable TV Network

Internet is a network of networks in which various computers connect each other through out the world. The connection to other computers is possible with the help of ISP (Internet Service Provider). Each Internet users depend dialup connections to connect to Internet. This has many disadvantages like very poor speed, may time cut downs etc. To solve the problem, Internet data can be transferred through Cable networks wired to the user computer. Different type connections used are PSTN connection, ISDN connection and Internet via Cable networks. Various advantages are High availability, High bandwidth to low cost, high speed data access, always on connectivity etc.

The number of household getting on the Internet has increased exponentially in the recent past. First time internet users are amazed at the internet’s richness of content and personalization, never before offered by any other medium. But this initial awe last only till they experienced the slow speed of internet content deliver. Hence the popular reference “World Wide Wait”(not world wide web). There is a pent-up demand for the high-speed (or broad band) internet access for fast web browsing and more effective telecommuting.

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LG OPTIMUS GT540

GET SMART, GET STARTED WITH
LG OPTIMUS

SEOUL, Apr. 27, 2010 - LG Electronics, (LG), a global leader and technology innovator in mobile communications, announced the launch of an Android-powered smartphone, LG Optimus (LG GT540), a handset offering an optimal environment for first-time smartphone users with easy and convenient mobile access.

 LG Optimus allows users to enjoy diverse Android applications and automatic account synchronization with all Google mobile services. LG Optimus also features enhanced social networking functions in a high-powered multimedia environment. “LG Optimus is the ideal choice for early smartphone users who expect all the features of smartphones without the complexity,” said Dr. Skott Ahn, President and CEO of LG Electronics Mobile Communications Company. “This is a device that was designed for regular people who want to jump into the smartphone experience but have been hesitant to do so because of the learning curve. By making LG Optimus more approachable, we hope more people will give smartphones a try.”

Optimal Convenience

LG Optimus delivers smartphone benefits in a convenient Google internet package. With an automatically synchronized Google account, users need to only log-in once to enjoy YouTube, Gmail, Gtalk, Google Maps and more. With easy access to more than 30,000 downloadable applications and games from the Android Market, users can easily customize and expand their LG Optimus experience.

The SN Manager offers integrated access to social networking sites in a convenient platform that can manage multiple accounts. LG’s dedicated Social Networking Client allows users to easily keep track of their Facebook, Twitter and Bebo accounts. Moreover, the Social Networking System (SNS) widgets provide real-time status updates directly to the home screen without having to access any other applications. The handset’s multitasking feature allows users to view updates from friends and access their social media sites while simultaneously searching the phone’s contact list.

The user interface is customizable for maximum convenience. The LG Optimus can be customized to show anywhere from three to seven home screens displaying frequently used applications, news and weather, among other information, depending on user preference. Additionally, the main menu can be personalized to include up to 10 editable categories for faster, easier navigation.

Optimal Excitement

LG Optimus includes high-powered entertainment features that make the phone extra fun to use. The advanced media player allows users to watch DivX and Xvid videos directly without separate encoding and browsing multimedia files is especially enjoyable with the 3D thumbnail gallery.

The phone’s 3MP camera supports geo-tagging, auto face-tagging and face-to-action technology to allow users to create and share multimedia content from the phone. The LG Optimus has a built-in video editor with storyboard function so that users can add music and text to videos directly on the phone.

LG Optimus boasts a distinctive design that is both sleek and soft and is available in fashionable colors including white, pink, black and silver. What’s more, the phone includes a long-lasting 1500mAh battery, a 3.5mm headphone jack, Bluetooth 2.1 capability, assisted GPS, 32GB of expandable microSD memory and four customizable home screen themes together with enhanced idle lock screen notifications.

LG Optimus will be available in May starting in Europe to be followed by other markets. Prices will vary country-to-country.

About LG Electronics, Inc.

LG Electronics, Inc. (KSE: 066570.KS) is a global leader and technology innovator in consumer electronics, mobile communications and home appliances, employing more than 82,000 people working in over 115 operations around the world. With 2009 global sales of 55.5 trillion Korean Won (43.4 billion US Dollars), LG comprises of five business units – Home Entertainment, Mobile Communications, Home Appliance, Air Conditioning and Business Solutions. LG is one of the world’s leading producers of flat panel TVs, audio and video products, mobile handsets, air conditioners and washing machines. LG has signed a long-term agreement to become both a Global Partner of Formula 1™ and a Technology Partner of Formula 1™. As part of this top-level association, LG acquires exclusive designations and marketing rights as the official consumer electronics, mobile phone and data processor of this global sporting event. For more information, please visit www.lg.com.

About LG Electronics Mobile Communications Company

The LG Electronics Mobile Communications Company is a leading global mobile communications and information company. With its cutting-edge technology and innovative design capabilities, LG creates handsets that provide an optimized mobile experience to customers around the world. LG is pursuing convergence technology and mobile computing products, while continuing its leadership role in mobile communication with stylish designs and smart technology. For more information, please visit www.lg.com.

Details Via:LG.COM

Specifications

General  

2G Network     GSM 850 / 900 / 1800 / 1900
3G Network     HSDPA 900 / 2100
      HSDPA 850 / 2100
Announced     2010, January
Status     Available. Released 2010, June

Size  

Dimensions     109 x 54.5 x 12.7 mm
Weight     115.5 g

Display     Type  

TFT resistive touchscreen, 256K colors (65K effective)
Size     320 x 480 pixels, 3.0 inches
     - Accelerometer sensor for UI auto-rotate
Sound     Alert types    
Vibration, MP3 ringtones
Speakerphone     Yes
     - 3.5 mm audio jack

Memory    

Phonebook     Practically unlimited entries and fields, Photocall
Call records     Practically unlimited
Internal     139 MB user available, 156 MB RAM
Card slot     microSD, up to 32GB, buy memory

Data    

GPRS     Class 10 (4+1/3+2 slots), 32 - 48 kbps
EDGE     Class 10, 236.8 kbps
3G     HSDPA 7.2 Mbps
WLAN     Wi-Fi 802.11 b/g
Bluetooth     Yes, v2.1 with A2DP
Infrared port     No
USB     Yes, microUSB

Camera    

Primary     3.15 MP, 2048x1536 pixels, autofocus
Features     Geo-tagging, face and blink detection
Video     Yes, VGA@17fps
Secondary     No

Features   

OS     Android OS, v1.6, upgradable to v2.1
CPU     600 MHz processor
Messaging     SMS (threaded view), MMS, Email, Push Email, IM
Browser     HTML
Radio     Stereo FM radio with RDS
Games     Yes + downloadable
Colors     Black, White, Pink
GPS     Yes, with A-GPS support
Java     Yes, MIDP 2.0
     - Social networking integration with live updates
- Google Search, Maps, Gmail
- YouTube, Google Talk
- MP4/DivX/Xvid/H.264/H.263/WMV player
- MP3/WAV/WMA/eAAC+ player
- Organizer
- Document viewer
- Voice memo
- T9

Battery   

Standard battery, Li-Ion 1500 mAh
Stand-by     Up to 500 h (2G) / Up to 500 h (3G)
Talk time     Up to 5 h 30 min (2G) / Up to 7 h 20 min (3G)

Misc    

SAR US    0.93 W/kg (head)     0.63 W/kg (body) 

Space Mouse

Every day of your computing life, you reach out for the mouse whenever you want to move the cursor or activate something. The mouse senses your motion and your clicks and sends them to the computer so it can respond appropriately. An ordinary mouse detects motion in the X and Y plane and acts as a two dimensional controller. It is not well suited for people to use in a 3D graphics environment.

Space Mouse is a professional 3D controller specifically designed for manipulating objects in a 3D environment. It permits the simultaneous control of all six degrees of freedom - translation rotation or a combination. . The device serves as an intuitive man-machine interface

The predecessor of the spacemouse was the DLR controller ball. Spacemouse has its origins in the late seventies when the DLR (German Aerospace Research Establishment) started research in its robotics and system dynamics division on devices with six degrees of freedom (6 dof) for controlling robot grippers in Cartesian space. The basic principle behind its construction is mechatronics engineering and the multisensory concept. The spacemouse has different modes of operation in which it can also be used as a two-dimensional mouse.

How does computer mouse work?
Mice first broke onto the public stage with the introduction of the Apple Macintosh in 1984, and since then they have helped to completely redefine the way we use computers. Every day of your computing life, you reach out for your mouse whenever you want to move your cursor or activate something. Your mouse senses your motion and your clicks and sends them to the computer so it can respond appropriately

Inside a Mouse
The main goal of any mouse is to translate the motion of your hand into signals that the computer can use. Almost all mice today do the translation using five components:



SPACEMOUSE

Spacemouse is developed by the DLR institute of robotics and mechatronics.
DLR- Deutsches Zenturum far Luft-und Raumfahrt

4.1 Why 3D motion?

In every area of technology, one can find automata and systems controllable up to six degrees of freedom- three translational and three rotational. Industrial robots made up the most prominent category needing six degrees of freedom by maneuvering six joints to reach any point in their working space with a desired orientation. Even broader there have been a dramatic explosion in the growth of 3D computer graphics.

 Already in the early eighties, the first wire frame models of volume objects could move smoothly and interactively using so called knob-boxes on the fastest graphics machines available. A separate button controlled each of the six degrees of freedom. Next, graphics systems on the market allowed manipulation of shaded volume models smoothly, i.e. rotate, zoom and shift them and thus look at them from any viewing angle and position. The scenes become more and more complex; e.g. with a "reality engine" the mirror effects on volume car bodies are updated several times per second - a task that needed hours on main frame computers a couple of years ago.

Parallel to the rapid graphics development, we observed a clear trend in the field of mechanical design towards constructing and modeling new parts in a 3D environment and transferring the resulting programs to NC machines. The machines are able to work in 5 or 6 degrees of freedom (dot). Thus, it is no surprise that in the last few years, there are increasing demands for comfortable 3D control and manipulation devices for these kinds of systems. Despite breathtaking advancements in digital technology it turned out that digital man- machine interfaces like keyboards are not well suited for people to use as our sensomotory reactions and behaviors are and will remain analogous forever.

4.2 DLR control ball, Magellan's predecessor

At the end of the seventies, the DLR (German Aerospace Research Establishment) institute for robotics and system dynamics started research on devices for the 6-dof control of robot grippers .in Cartesian space. After lengthy experiments it turned out around 1981 that integrating a six axis force torque sensor (3 force, 3 torque components) into a plastic hollow ball was the optimal solution. Such a ball registered the linear and rotational displacements as generated by the forces/ torques of a human hand, which were then computationally transformed into translational / rotational motion speeds.

The first force torque sensor used was based upon strain gauge technology, integrated into a plastic hollow ball. DLR had the basic concept centre of a hollow ball handle approximately coinciding with the measuring centre of an integrated 6 dof force / torque sensor patented in Europe and US.

     From 1982-1985, the first prototype applications showed that DLR's control ball was not only excellently suited as a control device for robots, but also for the first 3D-graphics system that came onto the market at that time. Wide commercial distribution was prevented by the high sales price of about $8,000 per unit. It took until 1985 for the DLR's developer group to succeed in designing a much cheaper optical measuring system.

4.2.1 Basic principle

The new system used 6 one-dimensional position detectors. This system received a worldwide patent. The basic principle is as follows. The measuring system consists of an inner and an outer part. The measuring arrangement in the inner ring is composed of the LED, a slit and perpendicular to the slit on the opposite side of the ring a linear position sensitive detector (PSD). The slit / LED combination is mobile against the remaining system. Six such systems  (rotated by 60 degrees each) are mounted in a plane, whereby the slits alternatively are vertical and parallel to the plane. The ring with PSD's is fixed inside the outer part and connected via springs with the LED-slit-basis. The springs bring the inner part back to a neutral position when no forces / torque are exerted: There is a particularly simple and unique. This measuring system is drift-free and not subject to aging effects.

The whole electronics including computational processing on a one-chip-processor was already integrable into the ball by means of two small double sided surface mount device (SMD) boards, the manufacturing costs were reduced to below $1,000, but the sales price still hovered in the area of $3,000.

The original hopes of the developers group that the license companies might be able to redevelop devices towards much lower manufacturing costs did not materialize. On the other hand, with passing of time, other technologically comparable ball systems appeared on the market especially in USA. They differed only in the type of measuring system. Around 1990, terms like cyberspace and virtual reality became popular. However, the effort required to steer oneself around in a virtual world using helmet and glove tires one out quickly. Movements were measured by electromagnetic or ultrasonic means, with the human head having problems in controlling translational speeds. In addition, moving the hand around in free space leads to fairly fast fatigue. Thus a redesign of the ball idea seemed urgent.


Details Via:seminarsonly.com

Space Mouse

Virtual Retinal Display

The Virtual Retinal Display (VRD) is a personal display device under development at the University of Washington's Human Interface Technology Laboratory in Seattle, Washington USA. The VRD scans light directly onto the viewer's retina. The viewer perceives a wide field of view image. Because the VRD scans light directly on the retina, the VRD is not a screen based technology.

The VRD was invented at the University of Washington in the Human Interface Technology Lab (HIT) in 1991. The development began in November 1993. The aim was to produce a full color, wide field-of-view, high resolution, high brightness, low cost virtual display. Microvision Inc. has the exclusive license to commercialize the VRD technology. This technology has many potential applications, from head-mounted displays (HMDs) for military/aerospace applications to medical society.

The VRD projects a modulated beam of light (from an electronic source) directly onto the retina of the eye producing a rasterized image. The viewer has the illusion of seeing the source image as if he/she stands two feet away in front of a 14-inch monitor. In reality, the image is on the retina of its eye and not on a screen. The quality of the image he/she sees is excellent with stereo view, full color, wide field of view, no flickering characteristics.

Our window into the digital universe has long been a glowing screen perched on a desk. It's called a computer monitor, and as you stare at it, light is focused into a dime-sized image on the retina at the back of your eyeball. The retina converts the light into signals that percolate into your brain via the optic nerve.

Here's a better way to connect with that universe: eliminate that bulky, power-hungry monitor altogether by painting the images themselves directly onto your retina. To do so, use tiny semiconductor lasers or special light-emitting diodes, one each for the three primary colors-red, green, and blue-and scan their light onto the retina, mixing the colors to produce the entire palette of human vision. Short of tapping into the optic nerve, there is no more efficient way to get an image into your brain. And they call it the Virtual Retinal Display, or generally a retinal scanning imaging system.

The Virtual Retinal Display presents video information by scanning modulated light in a raster pattern directly onto the viewer's retina. As the light scans the eye, it is intensity modulated. On a basic level, as shown in the following figure, the VRD consists of a light source, a modulator, vertical and horizontal scanners, and imaging optics (to focus the light beam and optically condition the scan).

The resultant imaged formed on the retina is perceived as a wide field of view image originating from some viewing distance in space. The following figure illustrates the light raster on the retina and the resultant image perceived in space.

In general, a scanner (with magnifying optics) scans a beam of collimated light through an angle. Each individual collimated beam is focused to a point on the retina. As the angle of the scan changes over time, the location of the corresponding focused spot moves across the retina. The collection of intensity modulated spots forms the raster image as shown above

Details Via:seminarsonly.com

Wireless USB

The Universal Serial Bus (USB), with one billion units in the installed base, is the most successful interface in PC history. Projections are for 3.5 billion interfaces shipped by 2006. Benefiting from exceptionally strong industry support from all market segments, USB continues to evolve as new technologies and products come to market. It is already the de facto interconnect for PCs, and has proliferated into consumer electronics (CE) and mobile devices as well.

The Wireless USB is the first the high speed Personal Wireless Interconnect. Wireless USB will build on the success of wired USB, bringing USB technology into the wireless future. Usage will be targeted at PCs and PC peripherals, consumer electronics and mobile devices. To maintain the same usage and architecture as wired USB, the Wireless USB specification is being defined as a high-speed host-to-device connection. This will enable an easy migration path for today's wired USB solutions.

This paper takes a brief look at the widely used interconnect standard, USB and in particular, at the emerging technology of Wireless USB and its requirements and promises.

USB Ports

Just about any computer that you buy today comes with one or more Universal Serial Bus connectors on the back. These USB connectors let you attach everything from mice to printers to your computer quickly and easily. The operating system supports USB as well, so the installation of the device drivers is quick and easy, too. Compared to other ways of connecting devices to your computer (including parallel ports, serial ports and special cards that you install inside the computer's case), USB devices are incredibly simple!

Anyone who has been around computers for more than two or three years knows the problem that the Universal Serial Bus is trying to solve -- in the past, connecting devices to computers has been a real headache!
" Printers connected to parallel printer ports, and most computers only came with one. Things like Zip drives, which need a high-speed connection into the computer, would use the parallel port as well, often with limited success and not much speed.
" Modems used the serial port, but so did some printers and a variety of odd things like Palm Pilots and digital cameras. Most computers have at most two serial ports, and they are very slow in most cases.
" Devices that needed faster connections came with their own cards, which had to fit in a card slot inside the computer's case. Unfortunately, the number of card slots is limited and you needed a Ph.D. to install the software for some of the cards.
The goal of USB is to end all of these headaches. The Universal Serial Bus gives you a single, standardized, easy-to-use way to connect up to 127 devices to a computer.
Just about every peripheral made now comes in a USB version. In fact almost all the devices manufactured today are designed to be interfaced to the computer via the USB ports.
USB Connections
Connecting a USB device to a computer is simple -- you find the USB connector on the back of your machine and plug the USB connector into it. If it is a new device, the operating system auto-detects it and asks for the driver disk. If the device has already been installed, the computer activates it and starts talking to it. USB devices can be connected and disconnected at any time.

USB Features
The Universal Serial Bus has the following features:
" The computer acts as the host.
" Up to 127 devices can connect to the host, either directly or by way of USB hubs.
" Individual USB cables can run as long as 5 meters; with hubs, devices can be up to 30 meters (six cables' worth) away from the host.
" With USB 2.,the bus has a maximum data rate of 480 megabits per second.
" A USB cable has two wires for power (+5 volts and ground) and a twisted pair of wires to carry the data.
" On the power wires, the computer can supply up to 500 milliamps of power at 5 volts.
" Low-power devices (such as mice) can draw their power directly from the bus. High-power devices (such as printers) have their own power supplies and draw minimal power from the bus. Hubs can have their own power supplies to provide power to devices connected to the hub.
" USB devices are hot-swappable, meaning you can plug them into the bus and unplug them any time.
" Many USB devices can be put to sleep by the host computer when the computer enters a power-saving mode

Details Via:seminarsonly.com