Archive for December, 2007
LCD displays have been around for years in everything from cell phone screens to
computer displays. Like a plasma display they are made of two pieces of glass-like
material with liquid crystals sandwiched in between the pieces of polarized glass.
LCD displays are often called “trans missive” displays because the liquid crystals do
not actually create the light needed to display the images but actually control the
light and the amount of light coming from the display. Basically the display works
on the principal of blocking light emission. Depending on the amount of voltage
placed through liquid crystal they can control the amount of light that passes
through the liquid. The liquid crystal cannot create their own light so an external
light source is necessary and this is in the form of a special fluorescent light bulb.
This bulb placed behind the LCD panel and the light from the bulb is diffused by a
white diffusion panel so that the amount of light emitted onto the LCD is uniform.
The liquid crystals will control the amount of light that passes through the glass
panels and the inner working of pixels and sub pixels to form images and control
color. The LCD pixels act like tiny shutters that either open or close to let light in or
to block the light..
The new fourth-generation Samsung 42 plasma is out, offering state-of-the-art high performance high-definition display and resolution.
As opposed to the liquid crystal type display technology, plasmas create their stunningly life-like pictures through a complicated gas-based system. The plasma display idea has been around since 1964, but is only now coming into its own for practicality.
At a slim and trim 3.4 inches in depth, the flat-screened plasma takes up virtually no space in your room, making it the screen of choice for both home and office. This plasma’s high-end display resolution of 1024 x 768 pixels gives a picture quality and depth of color that are outstanding.
The Samsung plasma television screen under discussion is 42 inches, measured diagonally. Plasmas range in sizes from 32″ up to the gigantic 63″ screen. A 42″ plasma screen is best viewed from ten to fourteen feet away, and has a high-end 160 degree viewing angle that is completely uniform, due to its perfectly flat screen.
The “Virtual Surround” audio system for this Samsung plasma TV simulates multiple-channel surround sound using fewer speakers. It has SAP/MTS stereo which enables three-channel audio encoding, an audio leveler which evens out sudden volume changes such as commercials, and Secondary Audio Programming (SAP) which allows reception of more than one soundtrack simultaneously.
Samsung plasma televisions are built from scratch in the factory. The HP-P4271 has almost twice as many pixels as EDTV plasmas, resulting in a clearer, sharper image. A great investment in your home entertainment center.
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John Lloyd makes it quick and easy to find the top plasma televisions. Read expert information here. |
If this doesn’t get you excited, then nothing will. LCD TVs have become all the rage and there is nothing better than a big screen TV. And when you couple LCD TV with HD TV, look out. An amazing physical display combined with a fantastic output. This is what is happening in LCD TV technology today.
If you are like most people looking to replace your TV, you’ve probably been paying close attention to High Definition Television sets (HD-TV). Unlike the previous generation of TV, which used analog signals to transmit information, HD-TVs use digital signals to transmit a signal and receive and display information directly on the television set. The HD-TVs also use a High-Resolution digital television set and Dolby Digital surround sound. The combination of the two creates incredible pictures and sounds – the best available on the market to date. HD-TV television offers viewers a level of detail they haven’t seen before: including a resolution about five times higher than that of analog TV.
The main thing to remember when you are shopping for HD-TV set is that just because a television is “digital” it does not mean it is necessarily “HD-TV compatible”. There are two levels below the HD level (standard definition TV and enhanced definition TV), both of which are vastly better than analog televisions but still of considerably lower quality than an LCD TV- HD-TV set. Since the FCC has mandated that all television sets eventually switch from analog to digital, you should know the differences between the different types of digital TVs.
Here are some tips. When looking to purchase an HD-TV, remember to compare the difference in picture resolution, audio features, and pixels. HD-TV requires a minimum of 720 horizontal scanning lines (enhanced definition TV, while considerably higher than standard definition TV, only features a minimum of 480 scanning lines) and the resolution on an HD-TV is 1920 x 1080 compared to enhanced definition TV, which only has a resolution of 1280 x 780.
When you experience a HD-TV image and then compare it to other TVs’ technology on the market, the difference will be clear. With “HD” everything looks and sounds far more realistic than on any other type of system. We think that once you see a big screen LCD TV with HD-TV, the choice will be clear.
This is just the tip of the iceberg when looking for a HD LCD TV. In fact, many of the most important tips haven’t been mentioned here. Learn about LCD TVs before making a purchase.
Lind Harrison is author of “Buy A LCD TV.” Read your copy at http://www.welcdtv.com.
What’s all the fuss when it comes to flat panel monitors versus CRT’s (Cathode Ray Tube) monitors? Is it worth the trouble to upgrade or replace your existing monitor to that of a flat panel. Well, a picture is worth a thousand words- better still it is almost certain once you see for yourself with your own eyes, you should be able to answer that question relatively easily and swiftly.
For one thing, flat panels usually offer more viewable areas than their Cathode Ray Tube counterparts. Meaning if compared two 15 inch monitors- one flat panel, and one cathode ray tube, you’d find that the flat panel offers slightly more viewing space despite also being labeled as a 15 inch monitor.
Also the picture quality of flat panel monitors generally are a lot more crisper. So if we take an example of you replacing your 17 inch cathode ray tube monitor with a 15 inch flat panel monitor, in reality you’d be getting (to the same effect of) 16 inches in display space, while providing greater clarity than the 17 inch one.
Is it worth it to get a flat panel monitor? Well if you are on the market for a new monitor then you should certainly strongly consider a flat panel versus the old dinosaur cathode ray tube models. I am sure you’ll like flat panels more. Nowadays they are getting more affordable too so nows as good a time as any.
Big screen tvs related offerings and value-added services are available at the author’s site.
http://www.flatpanelmonitorzone.com
LCD TVs provide high resolution images that can be seen from almost all angles. Even overhead TVs can provide very good picture quality. This has made it possible for LCD TVs to be mounted on walls, or even ceilings. Mounting LCD TVs is an ideal solution in places where more floor area is required, like restaurants, discotheques, airports and metro terminals and also in homes where the rooms are small.
LCD TVs are mounted by special wall mounts. These are ideally made of metal. Ordinary mounts allow the TV to be fixed on the wall. But there are more sophisticated types that have several rotation angles to make it possible to turn the TV if required. They also have hinge joints on their arms which makes it possible to either pull the TV farther from the wall, or to push it back in. Wall mounts with swivels can even provide rotation of the TV around a horizontal axis.
The first consideration when buying a wall mount must be its sturdiness. LCD TVs, being flat and sleek are not that heavy. But they are fragile. Hence, it must be checked if the metal would be able to bear the weight of the TV. Weight capacities of mounts are often inscribed on their packages. Also, the area where the mount would clamp the TV should be thoroughly inspected. A loose clamp would become looser with time and may cause an accident. It is better to go for mounts that allow the TV to stand in grooves rather than clamps.
If your wall mount can be rotated and twisted, then all the joints must be sturdy enough to bear such movements. They are also available with locking mechanisms, where you can lock the position of the mount once it is adjusted.
The beauty of a LCD TV mount lies in its subtlety. If you are hunting for a good wall mount, settle for one that’s not too big and is barely visible. It is also a good idea to select a wall mount in the same color as the wall in order to camouflage its presence.
LCD TVs on wall mounts have become an omnipresent feature today in public places like theatres, shopping malls, hotels, hospitals, and other facilities with large viewing audiences.
LCD TVs provides detailed information about LCD TVs, LCD TV reviews, LCD TV monitors, LCD TV wall mounts and more. LCD TVs is the sister site of Industrial LCD Monitors.