How to Purchase a Flat Panel TV
May 29th, 2008
When purchasing a flat panel TV, there are a few things to keep in mind. Here, we’ve listed a number of considerations for you to evaluate.
High Definition Upgradeable or HDTV-Ready
If you see either of these terms used when deciding to purchase a flat screen TV, it means that the TV is capable of producing the highest resolutions possible for digital television today. “Upgradeable” means that you’ll need to first add a separate HDTV receiver before you can view the pictures in high definition mode (1080i or 720p). But, even if you don’t upgrade, the picture will still look fantastic. When watching regular DVDs or TV broadcasts, the picture will be almost as good as real HDTV because most have line-doublers to improve the picture.
16:9 Aspect Ratio
Unlike conventional televisions, new plasma, LCD and rear-projection televisions most likely have a wide, rectangular screen that is very similar to the shape of a movie screen. This is known as 16:9 aspect ratiofor every 16 inches wide, the screen is 9 inches high. Compared to conventional TVs, which are 4:3 in aspect ratio, the field of vision is wider for a new flat screen TV.
When watching DVDs at home on a 16:9 wide-screen television, you will be able to enjoy the full screen effect of the movie the way it was intended. On the other hand, when watching regular, standard definition television (like a news broadcast or talk show), you will need to either set the television to fill the screen entirely or watch with vertical black bars on either side of the picture.
Finally, remember that even though most television broadcasts are in 4:3 format, 16:9 widescreen format is the way of the future. Many events are shot in HDTV format (for example, the Olympics, special sporting events, nature documentaries, etc.) and as more and more people purchase high definition television, all broadcasts will be in high definition within the next few years.
Reverse 3:2 Pulldown
Television shows are usually shot on film at 24 frames per second. When transferred to video running at 30 frames per second, the picture quality is distorted in the translation. New televisions are able to correct those distortions through a series of reconversion techniques which reverse the distortions. The result is a smoother and cleaner picture.
When looking to buy a new plasma, LCD or rear-projection television, look for this feature.
3D Y/C Digital Comb Filter
The 3D Y/C digital comb filter’s job is to take the cable signal coming from the wall and separate the color, sound, brightness information into useable information. New plasma, LCD and rear-projection televisions have digital 3D Y/C comb filters that do a pretty good job of this so as to avoid what is know as “dot crawl” where the edges of objects appear rough. In addition, a good digital comb filter will also counter the effects of moir
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