Posts Tagged ‘LCD’

A lot of people wonder what is the difference between the analog and digital TV? The answer is the way the signal is transmitted. The signal of analog television resembles very much to radio signal transmission, with one difference: the video signal of analog television is AM and the audio is FM. There are many negative aspects of analog signals, and one of those is that there can be annoying interferences in bad weather, and signal quality depends very much on the location of the TV.

The resolution and image quality are also restricted, because there are certain bandwidths assigned to analog TV channels. The analog signal is the United States follows the NTSC standard. This had been adopted in the 1940’s, and served well since then, but nobody thought at that time that about color television. One major weakness of the NTSC standard is color implementation, so it is no wonder a lot of people call “Never Twice The Same Color” the NTSC standard.

On the other hand digital TV signal is transmitted very similar to computer data: there are two kinds of signal, “on” or “off”. This way, the user either sees an image, or not. Gradual signal loss is an unknown term in the era of digital TV: it has no difference how close or how far away the transmitter is from the television, the viewer either sees the exact image, or sees nothing.

Digital TV format has been designed considering all main factors of television signal: B/W, color and audio can be transmitted as progressive or interlaced signal. Basically this means the signal content has greater integrity and flexibility.

Another advantage is that because digital TV signal consists of “bits”, the same bandwidth one analog TV signal requires can host not only higher quality digital image, but there will be extra space left, which can be used for extra video, audio or text signals.

Because of this, viewers can have a lot of extra features like surround sound, multiple language audio or text using the same bandwidth the standard analog TV signal requires. Digital television is also able to transmit signal for HDTV’s that become more and more popular these days.

With this technology, programs using true wide screen format (16×9) can be broadcasted. The 16×9 format means the shape of the picture corresponds to a movie screen. Viewers can forget about the black bars on the top and the bottom of the wide screen image, being able to watch movies the same way filmmakers wanted to be seen. Sports fans can also see more action, and with 16×9 format it is possible to view the entire football field, without the sensation that it is far away.

Digital transition in the United States took place on June 12, 2009. On this date all analog TV signals went dead, and every analog television became useless without an analog-to-digital converter. Originally the digital transition was scheduled to 2006, but authorities postponed it because they were afraid the consumers are not ready.

Edward is an electronics expert who writes LCD HDTV reviews. To read more sharp hdtv reviews, visit HDTVReviewLab.com

The full high definition (full hd tv) television goes by very many names and can sometimes be confusing. The television world has picked up with amazing speed and some have not been able to keep up with it. Some call the full high definition television the ultra high definition television. Others call it the true high density high definition television. For the technology buffs the full high definition television is simply called the 1080p.

To give you a picture of how the full high definition TV has won this war hands down you have to learn a bit. The standard TV would work on a resolution of 480. The high definition TV came along and blew this away with its high resolution of 1080i. Now get this, the full high definition TV has twice the resolution of the high definition TV.

Being of higher quality the full high definition TV will therefore come at a different price too. The high definition TV’s start from anywhere around three hundred and fifty dollars and go up to about five thousand dollars. The full high definition TV is priced at almost double this price. If you ask me though I think it is very worth it. Some may say they would rather wait for the prices to come down but this will take quite a while.

If you want to experience the maximum video sharpness of the full hd TV then you will know that size really does matter. If you compare a full high definition TV that is less than forty two inches with a hd TV you will almost not notice a difference. If you therefore intend to buy a full hd TV then you better do it big.

As with many other new technologies out there the competition between the full high density brands is at an all time high. This can be very confusing when you go out to the store to buy yours. I therefore suggest that you do some research to find the world’s leading brands. Some of the brands that I would recommend are; Pioneer kuro, Panasonic viera and the Sony bravia.

As the full high definition TVs’ work on such a high resolution, media manufactures had to adjust to this. Now the DVD’s and discs are all in high resolution formats. Otherwise the full high definition TV would be able to show high resolution but would have no high resolution media to play. They therefore now have the HD DVD and the blue-ray disc for them. These come with the movies and games in high resolution formats of 720p to 1080.

The hardest part of choosing a full high definition TV over, the next thing is the screen type. They come in two distinct types. The first one is the plasma screen and the other is the LCD screen. As per my research the LCD screen is ideal for multimedia entertainment. It is also easy to fit into any environment around the house without a hustle of glare or lighting.

The full high definition TV will then only be left to choose by smaller considerations. One of these is the viewing distance in your house. Some of them are meant to be watched from a far to get the highest quality experience.

Robbie Densmore writes about full hd tv online and best led tv