Archive for January, 2008

Jan
12

High Definition Television (HDTV)

Posted by: Teky | Comments (1)

HDTV

High Definition Television (HDTV)

High Definition Television or HDTV is the latest on TV technology. HDTV is better than most of the available TVs today in many ways; in sound, resolution and imaging. There are breakthrough technologies at work in a HDTV that made it more recommendable than the latest digital TVs.

HDTV is a digital television or DTV. Eighteen formats have been assigned to digital television, and presently, only six of the eighteen are considered HDTV. A true HDTV may have either 1080 interlaced lines or about 720 progressive scanned lines.

HDTV is not comparable to SDTV or Standard Definition Television. Though SDTV offers consumers a relevant improvement in picture resolution as compared to the usual digital TVs similar to a comparison of DVD to VHS viewing, it cannot compete with HDTV in the quality of both audio and video.

Favorite HDTV Features

Various technologies implemented on various HDTVs outclassed most of the technologies in digital TVs:

1. HDTV have about twice the picture resolution in terms of the vertical and horizontal as compared to any analog or digital TV available today. This makes the HDTV picture sharper and clearer than most of the TVs today.

2. HDTV have a wider screen with a screen or aspect ratio of about 16: 9 as compared to the 4:3 screen or aspect ratio of most analog or digital TVs.

An aspect ratio is the width of a picture screen relative to its height. So an aspect ratio of 4:3 means that the picture screen is 4 feet wide and 3 feet high. This means that the best picture screen available for HDTVs today is 16 feet wide and 9 feet high. This large screen will provide more detail resulting in a crisper image.

3. HDTV have also managed to reduce motion artifacts that includes ghosting or dot crawl on the screen.

4. HDTV also have a Dolby A3 Sorround System. It offers 5.1 independent channels of CD-quality stereo sorround sound. This is also referred as AC-3.

All in all, HDTVs displays pictures in a higher resolution with greater detail than most of the analog or digital TVs. Images are sharper and clearer and HDTVs offers the best digital sound available to the consumer.

The HDTV Converters

HDTV converters are used to directly convert digital signals from a satellite broadcast into HDTV format for viewing in most analog TVs instead of implementing an analog conversion that is inferior in terms of picture and image viewing.

Simply put, HDTV converters avoid analog conversions of digital signals resulting to a much improved picture on analog TVs. The picture and image on an analog TV that used a HDTV converter is similar to the picture and image from a DVD movie that is played in an analog TV.

SImilarly, HDTV shows from satellite broadcasts can be shown in an analog TV using the HDTV converter. The picture and image will be inferior but at least are much more tolerable.

The Best Set-Up for HDTV

The most ideal set-up for HDTV is by receiving a pure digital signal directly via cable either by DirecTV or by the Dish Network. These pure digital signals are received by a digital receiver and are displayed on a digital TV set.

Consumers that are looking for the best can opt for a front or rear projection HDTV set or also a plasma set with a similar 16:9 aspect ratio.

People who wants to test the HDTV technology but are not really sure of what they really want can opt for a HDTV-ready digital TV instead. HDTV-ready TVs are much more cheaper than the actual HDTVs.

These HDTV-ready digital TVs have the standard aspect ratios of 4:3. It lacks, however, the HDTV decoder that will interpret the HDTV signal. A stand alone HDTV decoder, however, is available if a consumer wants to be able to upgrade the display for HDTV broadcast.

The out of the box HDTV systems usually have a high definition tuner built inside it. Though, the addition of high definition tuner makes it more expensive, it nonetheless an advantage that is made for the convenience of the most enthusiastic viewer.

Categories : Everything HDTV’s
Comments (1)
Jan
01

What You Need to Know About HDTV

Posted by: Teky | Comments (0)

HDTV

What You Need to Know About HDTV

If you think that HDTV, since it is one of the world’s latest structures of technology, is all about being exactly that, you are dead wrong. Yes, if you have one you definitely have the right to boast it around for it is indeed boast-worthy, but that is not all. Hdtv has many benefits as well.

If you do not have an HDTV, then make the switch pronto. You might ask why would you want to change your old television sets for an HDTV? An old television set does not have digital superiority. Hdtv does.

Hdtv is proud to say that digital superiority is one of their many fantastic features. Hdtv also highlights the film with amazing details. When it focuses on a certain item, that item seems to be magnified for you see it like as if it is really in front of you. Cool huh?

Hdtv also features progressive scanning and digital audio. It is completely balanced. You cannot really enjoy great viewing if the sound is not really clear can you? Well HDTV’s digital audio makes you feel like the person you are watching on your television set is beside you and the two of you are talking as if in a conversation. There are also no more ghost images.

By ghost images, this does not mean that there are a number of caspers roaming around the screen. But there is a certain blur to the things you watch on TV that makes them look like they are ghosts. These kinds of ghosts are not scary at all, but they are highly annoying.

An FCC also mandates the switch and you are given an even wider viewing area. So you do not have to cramp up in front of the television set when you are watching it with your friends just to have a good view of the movie. The screen seems to be stretched so you can watch from afar, if ever you are cooking dinner, and watch your favorite movie at the same time. Now that is multitasking!

You can also watch DVDs in a much better way and satisfaction because hdtvs have a better quality DVD playback. Now isn’t that an example of all in one?

Common television sets are based on the aspect ratio of four is to three (4:3). This ratio means that the television can be measured with an approximation of its height of three feet, and a width of four feet.

However, the aspect ratio of an HDTV is, drumroll please, a whopping sixteen is to nine (16:9). This makes the image an HDTV gives out much much wider! In fact, the screen size of an HDTV is thirty three percent wider!

The width that is increased indicates a very huge improvement since it permits you to view the tv sitcoms and movies that you like, as if you were watching them in the cinema, just minus the loud snoring guy behind you and the couple that never seem to gasp for air in their kissing spree in front of you.

With an HDTV, you will never have to experience all the things that annoy when you are watching in the theater.

Just in case you do not know, when you are watching whatever it is that you are watching on a sixteen is to 9 (16:9) screen, you are actually making use of your peripheral vision. The utility of your peripheral vision will definitely make you feel like you are part of the program that you are watching.

The directory of ABC’s Monday night football, Norm Samat, did a feed about HDTV. And she vouched for the wonder that hdtvs can bring. She said that once you look at the pictures on your HDTV, you would seem like you entered a sort of trance because you actually see more than what is really shown. Groovy!

Now in terms of football, the sixteen is to nine (16:9) aspect ratio makes a big difference. If the old four is to three (4:3) aspect ratio is used, it was often a very tricky situation to have the defense covered.

But in an HDTV, they are already in your picture, so you can actually get to see more of the play, and also more of the development of the play.

Categories : Everything HDTV’s
Comments (0)