What is HDTV? Should I Have One?

Some satellite TV providers like Dish Network, offer HDTV receivers with their packages. But many people do not know what it means to have HDTV. Here's a sample.

High definition television or HDTV, which means literally. But compared to high definition, what? To answer this question, we need to know a little 'the original system analog TV

Analog TV
30 frames per second (in Europe 25) are indicated by normal analog TV. He does horizontal scan lines, 525 lines in the image on the screen (in Europe 625) on. The number of pixels in a row is about 500 It would be a definition of 500 pixels per line by 525 (or 625) lines. Compared to modern computer monitors this is really bad. Even the lowest resolutions monitors have higher resolution (640 x 480) than on analogue TV.

HDTV - High Definition Television
HDTV is high definition digital television (DTV) combined with Dolby Digital Surround Sound (AC-3). There are 18 different formats for digital television, of which 6 are defined as HDTV.

The difference between progressive and interlaced is not difficult. It is built like a photo to do. Technology intertwined with the odd lines are displayed first and then displays the even lines. The lines are in this order: shows 1,3,5, ... , 521, 523, 525, 2, 4, 6, .... 522, 524, 1, 3, etc. This means that every 1 / 60 of a second, half a picture is displayed. This often leads to flicker, which can be tiring for the eyes.
Progressive technology paves the way for a whole image every 1 / 60 of a second, to show what a much smoother image.

As HDTV is better?
Normal TV has a resolution of approximately 210,000 pixels. An HDTV has a screen resolution of up to 2,000,000 pixels, which offers up to 10 times more picture.

The aspect ratio of normal TV is 4 tall x 3 (4 / 3) times wider. HDTV is a screen aspect ratio of 16 x 9 widescreen, which is also known as.

The Future of HDTV
The FCC (Federal Communications Committee) has mandated that all television stations in the United States capable of HDTV programs broadcast in 2006. The mandates of the FCC have an impact not only on the transmission company, but also cable companies and consumers.

Broadcast companies must invest in new equipment, such as cameras, editing equipment, etc.

The cable companies are converting all their devices, including receivers in the homes of their clients.

Consumers may have to purchase new equipment as a top box to convert digital signals back into analog signals, or even the entire TV.

HDTV is the future, and truly a great step forward. We started with a simple black and white TV, then moved to color TV and widescreen televisions. But all these systems are still the same signal as the original black and white based TV is using. Color TV, when it was introduced, it was not possible to force the entire population, express their black and white television and buy a color television. Therefore, a color TV signal is still required to make a black and white television to be understood. This prevents the improvement of the quality of images until the age of digital television.

The need for large televisions no longer meet there, and much higher quality HDTV satellite TV systems including Dish Network available.
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