HDTV – Overview

Technology has created immense revolution in the world and people have become so much accustomed to the increasing facilities that they can’t even think of a day without it. Same is the impact laid upon in the world of television by the technical advancements. Have you ever thought of a television that gives better picture quality and sound clarity. The seemingly impossible dreams have proved to be a fact with the invention of HDTV.

HDTV is the acronym for high definition television. The basic method used in this television is digital broadcasting. The digital clarity is visible in the high-quality pictures and Dolby digital sound system of the television. The main similarity and difference between the working of HDTV and ordinary television is the use of the bandwidth. Both use the same amount of bandwidth which comes to 6 megahertz. The main difference of a HDTV with an analog system is that the information transmission possible with HDTV using this bandwidth level is 6 times that of the current system using analog techniques. This can give better picture and sound clarity.

HDTV pictures are made of 1080 scanning lines as different from the 525 horizontal scanning lines of traditional televisions. This will multiply the amount of pixels as well causing HDTV to have around 2 million pixels as compared to the 300,000 pixels of ordinary TV. These high pixels can increase the sharpness of the pictures on screen enabling the viewer to read even the small texts on the TV screen as in a computer. The screens of HDTV are wider and almost resemble a movie screen. This can give a better natural vision closing to human peripheral vision.

HDTV uses data casting to broadcast data. This can enable interactive television possibilities with HDTV. Thus the end user will have a different experience in viewing television. Television will move from the old traditional concept of TV to a more advanced concept of home theater. The effect of sound and picture clarity will be compatible to that of a theater at your home.