TechFresh Daily: 4G Wireless Internet and Latency Issues and 10 more...

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TechFresh Daily: 4G Wireless Internet and Latency Issues and 10 more...

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4G Wireless Internet and Latency Issues

Posted: 05 Oct 2011 07:49 AM PDT

Satellite

Although the use of wireless, satellite-based internet is now availabe from companies like Clear Internet, this method comes with unavoidable latency issues. Two primary problems that affect wireless Internet are signal stability and signal strength. Signal stability will depend on temporal environmental changes and other signals present in the air. Signal strength mainly depends on the distance the signals have to cover and obstructions along the path.

In case of geostationary satellites, the signals cover a distance of around 22,236 miles to the orbit before returning to earth. Even though the signals travel at the speed of light (186,000 miles per second) the distance still results in notable delay between transmission and reception. Assuming there are no other delays, it still takes about a quarter of a second (250 milliseconds) for the signal to travel to the satellite and back.

The theoretical minimum for receiving internet packets is twice the delay. When you factor in delays from other normal sources, it takes between 1000 and 1400 milliseconds for the signals to travel to the satellite and back to earth, which makes latency a significant issue.

Signal stability also leads to latency issues because there is always a need to add more processing to compensate for the signal instability. Although the signals always travel at the speed of light, the interaction of hardware and software in processing them leads to more delays. While further fine tuning can lower the latency, the theoretical minimum will still be higher than for wired Internet connections.

Latency creates some pertinent problems, particularly in gaming and VoIP communications. Even if people's voices do not have a robotic sound, callers still have to grapple with odd silences as the signals travel to their destinations. Have you ever watched television communications where one speaker has finished speaking while the other still waits, leading to awkward silences? The same applies to such VoIP calls as Skype. Gaming also becomes less natural as players wait for signals to travel back and forth.

Obviously, wireless internet access is going to become the norm over the next few years. Technological solutions to these latency problems are on the way. You can learn more about the convenience of portable internet solutions at www.clearwirelessinternet4g.com and see what the future has to offer.

Samsung Releases New Smart Refrigerator In South Korea

Posted: 05 Oct 2011 05:58 AM PDT

Samsung Releases New Smart Refrigerator In South Korea

Samsung has joined together with E-Mart to release a new e-commerce enabled Smart Refrigerator(model: FRS73DRDFW) in the South Korean market. This refrigerator enables users to order their kitchen supplies directly through a built-in LCD display. Users are able to choose from up to 22,000 items sold by E-mart. Samsung will release the Smart Refrigerator later this month. No word on pricing so far. [Newlaunches]

Fast-charging Battery Phone Case From NTT DoCoMo

Posted: 05 Oct 2011 05:49 AM PDT

Fast-charging Battery Phone Case From NTT DoCoMo

NTT DoCoMo has unveiled the prototype of super-fast rechargeable battery phone case at CEATEC 2011. What makes this battery phone case interesting is that it uses a lithium-titanate (LTO) battery that requires only 10 minutes of charging time for a full charge. As a comparison, Toshiba’s Super Charge Ion Battery needs only 5 minutes of recharging time for a full charge and lasts for 6,000 charge-discharge cycles. [CNet]

HIOD One Sport Communicator For Cyclists

Posted: 05 Oct 2011 05:33 AM PDT

HIOD One Sport Communicator For Cyclists

The HIOD One sport communicator is designed specifically for cyclists. This gadget will help them to stay safe, focused and connected while on the road. The HIOD One uses a Bluetooth-based system called PalTalk to offer an instant link with up to five other cyclists within 400 meters radius. The HIOD One also helps you to make and receive phone calls and to stream music while cycling. Sadly, there is no info on pricing or availability at this time. [HIOD]

Casio G-Shock GR-8900A Released

Posted: 05 Oct 2011 12:59 AM PDT

Casio G-Shock GR-8900A Released

The Casio G-Shock GR-8900A is now available for purchase. The shock- and water resistant timepiece comes with a variety of functions such as a 1/100 second stopwatch, a countdown timer, and a mute function. The G-Shock GR-8900A adopts the Tough Solar power system that is designed to generate enough electricity to feed the LED backlights and other power-hungry functions. The watch also has an aluminum bezel that makes it more durable. The Casio G-Shock GR-8900A retails for $140 each. [Hypebeast]

Ricoh Releases New Portable Digital Projectors For Business People

Posted: 04 Oct 2011 11:58 PM PDT

Ricoh Releases New Portable Digital Projectors For Business People

Ricoh has decided to enter the portable projector market by releasing the new Ricoh PJ Series. Designed for business people on-the-go, the Ricoh PJ Series consists of five models including the PJ X3131, PJ X3241, PJ X3241N, PJ WX3131 and PJ WX3231N. These projectors offer a minimum brightness rating of at least 2,500 lumens, 3LCD color clarity and a built-in speaker. The PJ X3131, PJ X3241 and PJ X3241N models offer an XGA resolution, while the PJ WX3131 and PJ WX3231N models support a WXGA resolution. The Ricoh PJ X3241N and PJ WX3231N provide advanced networking capabilities for shared use and remote management. Both models also have a USB port that lets you deliver presentations without a computer. The Ricoh PJ Series is priced at between $800 to $1,200, depending on the model. [Press Release]

Boogie Board Rip Now Available For Pre-order

Posted: 04 Oct 2011 09:34 PM PDT

Boogie Board Rip Now Available For Pre-order

Improv Electronics has announced that the Boogie Board Rip is currently available for pre-order in the United States and Canada. This tablet offers paper-like writing experience and has the ability to record written notes/images and save them as PDF files. The Boogie Board Rip also requires only a small amount of power to erase, save or upload stored files to a computer. If you are interested, you can pre-order the Boogie Board Rip for $129.99. [Engadget]

Geneva Lab Portable XS Speaker

Posted: 04 Oct 2011 09:14 PM PDT

Geneva Lab Portable XS Speaker

Geneva Lab today announced the availability of the new XS portable Bluetooth speaker. It is a foldable Bluetooth speaker system that is compatible with any Bluetooth A2DP devices. The gadget comes equipped with an alarm clock, an FM radio, and a rechargeable battery that offers around seven days of standby time or up to 5-hour of continuous music playback via Bluetooth. The XS portable speaker is currently available in Singapore for S$299(US$229). [CNet]

XFX Radeon HD 6770 Graphic Card

Posted: 04 Oct 2011 04:38 PM PDT

XFX-Radeon-HD-6770-Graphic-Card

Here’s the latest graphics card from XFX, the Radeon HD 6770. Codenamed HD-677X-ZMF3, the card is packed with 128-bit memory interface, a GPU clock of 850MHz, a 1GB of GDDR5 memory set @ 4800MHz and a single-slot, single-fan cooling system, and features dual-DVI and mini DisplayPort outputs. The XFX Radeon HD 6770 is scheduled to go on sale from October 5th for around $120. [XFX]

Lenovo C325 All-In-One Desktop PC

Posted: 04 Oct 2011 04:34 PM PDT

Lenovo-C325-All-In-One-Desktop-PC

Lenovo has once again expanded its line of desktop PCs with the introduction of the C325. Coming in two different body colors: metallic black and white diamonds, this space-saving machine is equipped with a 20-inch 1600 x 900 LED-backlit display, a 1.65GHz AMD E-450 dual-core processor, an AMD A50M FCH chipset, an AMD Radeon HD 6320 graphics card, a 2GB DDR3 RAM, a 500GB hard drive, a built-in webcam, a DVD Super Multi Drive, a 6-in-1 card reader, WiFi and runs on Windows 7 Home Premium 64-bit (SP1) OS. The Lenovo C325 will start shipping from October 28th for around 50,000 Yen (about $652). [Lenovo]

Arctic Accelero Twin Turbo 6990 VGA Cooler

Posted: 04 Oct 2011 04:28 PM PDT

Arctic-Accelero-Twin-Turbo-6990-VGA-Cooler

Arctic is offering you their newest VGA cooler, the Accelero Twin Turbo 6990. Designed specifically for AMD Radeon HD 6990 graphics card, this high performance cooler comes with 86 aluminum fins, ten 6mm copper heatpipes, two coper plates and two 120mm Fluid Dynamic Bearing fans that work at 400 to 1500 RPM. The Accelero Twin Turbo 6990 sells for $149.95. [Arctic]

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