Posts Tagged ‘panasonic plasma televisions’
The Television That Is Replacing The CRT TV
The huge screen plasm, HDTVs or High Definitions are taking over. The main reason is that once you see a sport’s event on one of these screens, you just can’t go back to your old CRT television. High definition means having a lot more pixels than Standard Definition. Much like a 600 DPI printer will give you much greater detail than a 300 DPI printer, a high definition television will be able to display a lot more dots on the screen than a standard TV. The result – much better picture quality.
The two primary kinds of flatscreen TVs are plasma and LCD. Along with their other benefits, both of these sets showcase exceptional picture quality. Of the two, it’s generally conceded that the LCD technologies produce a nicer overall picture quality – particularly in the realms of color saturations and more realistic skin tones. On the other hand, the plasma TVs sport the advantage of better “black level” displays which serves to make the image crisper and clearer. Both LCD and plasma televisions have their disciples. And only you can decide which one is better for you is a matter of personal preference.
Old style CRT televisions used a cathode ray or electron gun to paint the screen with a picture. The newer plasma style televisions work on a different principle
The difference in plasma style televisions is that samsung plasma televisions don’t use scan lines to display a picture. Instead a plasma TV is pixel based. The pixels form a matrix of cells or transistor electrodes filled with an inert gas. The cells are coated with phosphorous and are sensitive to electrical current and emit red, green and blue lights in response to electric current.
When you turn on the TV, the cells are activated. When you turn it off, the cells are de-activated.This is the same way that computer monitors work. The three primary colors can create the colors required. In the end, the result is a crystal clear and smooth image being displayed on the screen. But another reason for the superior image qualities of plasma TVs is that while CRT televisions can display images in thousands of colors, plasma televisions can produce millions of colors.
Nearly all plasma TVs have what is referred to as a built in line doubler. What this does is take an interlaced video source and strip out the extra lines to create a single-interlaced frame output. In effect, it “doubles” the resolution of the regular TV signal. The end result is a smoother and higher resolution picture. Now, since plasma TVs can’t play interlaced signals directly, they use a line-doubler to modify the signal into a format which they can read. There’s more than one algorithm that can be used to “deinterlace” a signal and the quality of the resulting image depends to a large extent on which algorithm is brought into play.
There are a few problems with CRT screens, especially the older models. Some have a problem with glare, especially when watching TV in a room filled with sunlight. This is mostly due to the curvature of the screen. Most of the flat screen models, now available, have pretty much eliminated this problem.
Plasma televisions have another advantage as well in that they aren’t susceptible to the usual image distortions that CRT televisions are subject to. So no matter where you view the picture from, you get a true view of the picture.
Plasma TVs – What’s So Good About It
The big advantage of plasma style TVs and why they are so popular is their versatility. You can put them almost anywhere. Their sleek design makes mounting them on a wall child’s play and because they’re so thin, they hardly take up any space in whatever room you place them in.
When the first plasm TVs hit the streets, there was a huge price difference between the larger models and the smaller ones. Today that price difference has all but disappeared. In fact, the difference has dissipated so much that the price difference is almost negligible. Today, the smallest plasm television you can buy is a 32 inch diagonal.
Anybody considering buying a samsung plasma televisions today should choose one of the larger screens, assuming that is , that they have the available room space in their house. The largest plasma TV built to date is the Panasonic 150 inch diagonal of which, at last count, only 5 existed in the world. No doubt there will be even larger plasm television screens in the future. The limiting factor today is not the plasma TV technology. Rather it’s the difficulty of manufacturing a glass screen larger than 150 inches that’s not prone to cracking.
One thing that buyers of plasma televisions should be prepared for is higher electricity bills. According to the Environmental Protective Agency a plasma television will use five times more energy than an equivalent LCD screen. Most people when they purchase a plasma TV will buy one with at least a 36 inch diameter. And even though this is at the smaller end of plasma televisions, the electricity usage from a TV this size can equal that of a medium sized refrigerator. Right now, the typical consumer has no way to judge the energy efficiency of any particular model. Eventually, however, you’ll begin to see the Energy Star tags appearing on plasma TV models so you can at least compare one model to the other in terms of energy use.
Looking at things with a room decorator’s eye, there is a huge advantage to having a plasma TV in a room instead of one of the clunkier models. You can re-arrange the room with ease and give it completely different looks. The old bulky CRT televisions, especially those with large screens, would take up a tremendous amount of living space, limiting your options on how your furniture could be arranged.
A regular TV normally requires that you have a furniture piece on which to place the television. But the new plasma TVs can practically be placed anywhere. They can be hung on the wall, placed on a piece of furniture, suspended from the ceiling, placed in a hidden wall, and so on. It can be treated a furniture or as art. From being one of the least versatile pieces, it has gone to one of the most versatile.
The technology for Plasma TVs has been around for over forty years. From simple points of lights used to perform simple laboratory experiments, the technology has advanced to the point where it is used to power millions of television sets across the globe. Similarly, the quality of the images displayed has increased more than a thousandfold since those early prototypes.