Wading Through Technology - HDTV Televisions, Which One is Best For You?

There are several to choose from. The main three HDTV types are LCD, plasma, and the new LED, all thin enough to hang on your wall.

HDTV LCD televisions provide a wider and sharper image that rivals DVD's. HDTV televisions offers about twice as many "lines" of resolution and better quality, digitally encrypted sound to enhance the viewing experience.

Digital HDTV's can provide sharper, clearer pictures and sound with very little interference or other imperfections. Of perhaps greater importance, digital television sets will potentially be able to send, store, and manipulate images as well as receive them, thereby merging the functions of the television set and the computer.

Unlike the rear projection TVs of the recent past, the new DLP TVs are thinner as well, but not yet to the point where you can hang them on your wall. But DLP has a price advantage, which means you can get a bigger screen for less money!

You may also want to compare Plasma TV and LCD TV as it is this comparison that is putting more pressure on DLP manufacturers. With DLP, you can also get a front-projection system, which requires a dedicated screen. This is the preferred method of many home-theater buffs, since it allows for a flawless picture and a much larger screen, but it's not the best set-up for most living rooms.

An HDTV LCD television is a flat screen and so they look very sleek and cool in any room and another advantage is that a flat screen LCD television will require much less space than "Grandma and Grandpa's" old bulky televisions. The Liquid Crystal Display technology that is behind the LCD televisions has come a long way in recent years, it has been around for a very long time but only recently has it been able to produce the kind of quality needed for a modern television.

LCD TVs vary in size, but larger sizes have been limited due to manufacturing costs and are now coming down. We are now seeing manufacturers like Vizio, Samsung and Sony producing larger and larger screens.

Sales of Plasma Televisions have not grown as much as LCD Televisions sales, partly because plasma screens have a shorter life span and use more energy. In terms of quality, LCD, Flat Plasma TV, and DLP all come in a variety of high-def resolutions, and each side will argue that they offer the best experience. That's a much longer discussion, but we'll just say that each one has their strengths and a few weaknesses depending on the type of environment and content you like to watch.

Find The Best Deals and All The Pros & Cons Between LCD, "The New LED", and Plasma TV's with additional in depth details, discussions and "how-to's" at http://hdtvlcdtelevisions.net

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Competition Over HDTV Technology Heats Up

There are a variety of technological factors that are causing the competition between all of the different TV service providers to heat up. The major technological innovation that most of these companies are using to try to attract new subscribers is HDTV. HDTV provides a TV picture that's a lot like a big screen movie picture, both in shape and level of detail in the picture. It also features a high quality sound format in the form of Dolby Digital 5.1 Surround Sound that uses six total speaker to surround the audience with sound that goes along with what's happening on the HDTV screen. This combination has drummed up a lot of interest among viewers when it comes to getting this high quality entertainment in their own homes, and all of the major TV service providers are banking on this excitement to boost their subscriber rankings.

It should go without saying that, at least theoretically, the TV service provider that can offer the most HDTV channels will be the one to attract that most subscribers. Brining HDTV channels online is easier said than done though. At first, there just weren't that many HDTV channels available to offer. More recently however, there have been plenty of HDTV channels available, but not every TV service provider has the bandwidth required to transmit as many as they'd like.

The bandwidth limitations have been of particular concern to cable TV companies because they simply don't have as much available bandwidth as the satellite TV companies. This makes it much more difficult for them to offer as many channels as satellite TV companies can. There is a new technology that's rapidly being implemented by cable companies that could save them from losing the HDTV game though. This technology is called Switched Digital Video and it overcomes the bandwidth limitations by allowing a cable TV provider to transmit only the channel that a subscriber is watching to that subscriber, thereby freeing up its existing bandwidth to offer more channels. This means that a cable TV company can theoretically offer as many HDTV channels as it wants. It also means that cable TV companies will be well prepared to offer even more data intensive TV formats- like 3D HDTV and Ultra HDTV- as they become available.

The satellite TV industry has been in a better position to begin with when it comes to offering more HDTV channels, and despite the threat of cable TV companies with their Switched Digital Video technology (which doesn't work with satellite transmissions incidentally), satellite TV companies can still compete in the realm of HDTV. The approach of satellite TV companies is more of the brute force nature where they increase the amount of bandwidth available to them so that they can devote it to transmitting more HDTV channels. This simply involves launching more satellites.

The high level of competition has lead to some strange moves from the companies that are fighting for more subscribers. For example, a cable TV company has repeatedly sued a satellite TV company for claiming to be able to provide more HDTV channels than cable TV can offer. But the cable company claims that with Switched Digital Video it can offer more channels. The cable TV company seems more interested in arguing the point in court than it is in actually implementing the technology that will provide those channels.

Like everything else where TV is involved, the results of this competition will be determined by technology, economics, and ultimately human nature.

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HDTV Technology - Should I Get a 1080p or 720p HDTV?

As you search for the perfect HDTV, you'll come across dozens of different terms that explain different types of technology, different styles of display and different levels of quality. One term that you will need to be familiar with is the screen resolution. An HDTV picture is made up of many small dots, or "pixels", and the amount of pixels that are used to make the picture is referred to as the resolution. In general, the more pixels, the better, and since an HDTV has more pixels than a regular TV, that's one of the things that makes it better.

There are two different levels of resolution commonly used in modern HDTVs. The lower one is called "720p", which means that there are 720 rows of pixels and it's a progressive display. In a typical widescreen HDTV, each row has 1280 pixels. The higher resolution, 1080p, means 1080 rows of pixels, usually with 1920 pixels per row.

What, you may ask, is a progressive display? In a progressive display, 30 times a second, the screen shows the full picture, then erases it to make room for the next frame. The other way to show a picture is with an "integrated display". That's where the TV draws the even rows of the picture on the screen, then the odd rows, then the even rows of the next frame, and so on. This technique has been used in regular TV sets for decades, because it takes about half as much effort and looks almost as good as a progressive display. Now that we have better technology, though, we can make every HDTV with a progressive display and bring picture quality up to the highest possible level. TV shows are still usually broadcast in an integrated format because it takes less bandwidth, but an HDTV will always "de-interlace" these shows to display progressively onscreen.

If you want to get a really big HDTV, you'll want to seriously consider 1080p resolution. In any set larger than 50 inches, a lower resolution will look choppy, since you'll be able to see individual pixels.

So, it would seem that 1080p is clearly better, and 720p is not really worth considering. But, there are actually some good reasons to choose 720p over 1080p:

Input source.

You will only get the full benefit of a 1080p HDTV if you are watching 1080p content. Almost all TV broadcasts are still in 720p or 1080i, so a 720p set will handle them fine.

Screen size.

If the screen size is smaller than 50 inches, it will be very hard to tell the difference between 720p and 1080p. At a normal viewing distance, they will look essentially the same.

Cost.

A 1080p set will almost always cost more than a similar set built with 720p resolution. If you can't see much difference in picture quality, why spend more?

Other factors.

When looking at the big picture in your HDTV purchase, the screen resolution is only one factor. Contrast ratio, black level, likelihood of problems and even customer service can all be more important factors than screen resolution. Don't let one exciting feature convince you to buy an inferior set.

The best way to get that big picture is to do research on the internet, look at HDTV reviews, see the sets in person if possible, and think about the factors that are really important to you. Using an online HDTV tutorial can also help point you in the right direction.

About the Author

Tom Webster is a researcher and copywriter who writes for FlatHDTV.net, a guide to the HDTV revolution.

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