Archive for the ‘Uncategorized’ Category
HD TV Now Available on iTunes September 24th, 2008
Try iTunes new HD TV.
Tags: hd tv, itunes, itunes hd tv, new itunes feature, tv hd
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LCD Or Plasma – Which Is Best For Your Digital Signage Display? September 9th, 2008
By Barry Byers
In the world of digital signage there is a debate about which display option is best – LCD or plasma.
There are many factors summarized here, including performance and cost, that will determine whether you choose LCD or plasma for your digital signage display.
The Mechanics
A January, 2007 article on selfserviceworld.com described the differences between LCD and plasma in layperson’s terms. In summary:
• LCD consists of two sheets of transparent, polarized material, one of which is treated with a polymer containing liquid crystals. The crystals interpret the electric current and control the light that passes through. Fluorescent tubes behind the crystals produce the light that passes out to the viewer. The crystals do not emit light so LCD screens use less electricity than other displays.
• Plasma displays use glass coated with bubbles that contain ionized gas in red, blue, and green subcompartments. A phosphorescent coating is applied to the glass and when electricity passes through the plasma it emits ultraviolet rays that show the appropriate color.
Performance
An oft-cited concern with plasma screens is burn-in. Depending on what you read, burn-in is either a serious problem or a minor one that can be easily remedied.
Burn-in is a term used to describe static images that become permanently visible after being displayed for long periods of time. Burn-in is not an issue with LCD displays but can become a problem with plasma. Burn-in is becoming less of an issue as digital signage display firms employ some simple techniques for avoiding it: ensuring images are frequently rotated, using more motion, and lowering contrast and brightness levels.
Lifecycle is another concern. At one time LCD had a longer life, but the life expectancy of LCD and plasma are now roughly equivalent, lasting about 50,000 hours each.
LCD units are lighter and use less power, factors which may affect your decision.
Contrast ratios (the difference between black and white) are much higher on plasma, which results in a clearer and brighter image. Plasma displays video images and fast motion better than LCD and offers a wider viewing angle, which can be important in retail environments.
Cost and Size
The deciding factor between LCD and plasma has often been cost. With the prices of large-format LCD displays dropping, cost is becoming less of an issue.
Size is an issue that ties in with cost since it is your budget that may ultimately determine the size of screen you choose. Plasma is generally available in larger sizes, although this is changing as LCD displays get bigger. Plasma does still tend to win out for larger displays – digital signage display designers tend to prefer it for displays over 50 inches.
How Can You Decide on a Digital Signage Display Format?
Both LCD and plasma offer some benefits, depending on your needs. When making a decision about your digital signage display, you need to take a good look at your budget and factor in the size of the display required
About the Author
For more information on digital displays and electronic signs contact http://www.ek3.com
Published At: www.Isnare.com
Permanent Link: http://www.isnare.com/?aid=239219&ca=Computers+and+Technology
Tags: brightness levels, color performance, contrast ratios, digital signage, lcd displays, lcd life expectancy, lcd screens, liquid crystals, plasma displays, plasma life expectancy, plasma screens, power factors, static images, ultraviolet rays
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The Future Of Wireless Uk Broadband September 8th, 2008
By Robert Michael
Wireless broadband in the UK has never seemed to take off as well as wired broadband. Most households in the UK have the ability to get broadband internet, but wireless access is limited.
There are many reasons why wireless internet is better than wired internet, but in the UK it seems that no provider can get it to work for the users. It may just be, though, the answer to those living in remote areas where broadband service is less than desirable.
The wireless providers are finding a niche market in remote areas, the younger generation and business minded people who are seeing the perks of a wireless connection.
The difference between wireless and wired internet is basically that wireless internet uses no wires, where wired internet does. A wireless service is sent through radio signals instead of through lines and cables.
A person with a wireless connection can hook up to the internet without ever hooking anything into their computer. With a little set up the computer is ready to be used with a wireless internet service.
Then a person can use their computer wherever they like, as long as it is within an area where wireless broadband is offered. Wireless internet provides so much freedom to both providers and users.
For the provider wireless UK broadband is a far better solution than wired. Wireless internet connections are much easier to set up and maintain than wired services. It is also far easier to get wired services to remote areas than wired services, which is why wireless service is heavily promoted to people in those areas.
For the user, wireless internet offer flexibility. Nothing wired into a computer, no need to add new lines and far fewer maintenance issues.
With a wireless connection a person is no longer confined to their home, hooked into the broadband connection, they can use their wireless connection around their home or in many of the public places that offer wireless broadband access, like pubs or restaurants.
Wired internet is most popular for laptop computers and mobile phones. Many people do not see the idea stretching to their home computer and feel that it is complex and too involved for them to deal with. With three-quarters of the population of the UK using broadband services, only a third are actually using wireless technology.
The internet choices in the UK change rapidly. Wireless UK broadband is still fairly new, but many companies are jumping onboard to provide it to their customers. Currently wireless
UK broadband is available to limited areas. As the providers work through the kinks and get more users interested, it is likely that wireless broadband will overtake wired broadband as the internet service of choice.
For more information on how UK broadband contact http://www.ukispreview.co.uk
Published At: www.Isnare.com
Permanent Link: http://www.isnare.com/?aid=110923&ca=Internet
Tags: broadband internet, households, wireless access, wireless broadband access, wireless internet connections, wireless internet service, wireless providers
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