If you own a standard analog television, when you look closely you’ll see that the picture is composed of a series of lines. You can see a similar effect by enlarging a picture on your computer over and over until it’s revealed to be composed of a set of color squares. The squares, in the case of the computer and the lines, in the case of the television, are how the resolution of the image is determined. More lines on a television image create a higher resolution-which is to say a clearer and sharper-image.
Since its invention, there have been many different resolutions attempted for television broadcast. Prior to the 2000’s, television broadcasts were almost exclusively in an analog format, which uses huge amounts of radio frequency bandwidth compared to the digital broadcasts of today. Hence, television images tended to be of lower quality than images that appeared on computer screens and DVDs. samsung led tv 32 inch full hd
Recently, Congress passed a law that requires all television broadcasts to be in digital format by February 2009. Digital broadcasts are able to compress images, allowing multiple broadcasts to be carried on the same amount of bandwidth that was only adequate to carry one analog broadcast in the past. However, even though many broadcasts can “fit” into the same space as the old broadcasts, the transmission technology, combined with new, digital televisions, allows broadcasters to offer their programming in “HD” format.
HD format enables a level of clarity and sharpness impossible to attain with the old analog broadcasts. An old television’s resolution is like looking at the world through a dirty window compared to how high definition images appear on screen. Since its debut, HD has proved to be a popular format, especially for sports broadcasts, where the ultra-sharp image makes it easier to follow the action and gives the viewer the sense of being on the sidelines, in the stadium or on the ice.
HD television is currently set to be the standard for the future of television, with terrestrial analog broadcasts being eliminated all together, except in some very specific cases, where they will still be eliminated just at a later date. As consumers adapt to this new world, providers are finding ways to offer more HD television choices and television makers are producing more and more of the televisions that receive them in an effort to keep up with the demand. If you purchased your television in the last few years, it’s probably HD compatible, but you need to check your manual to make sure. Those who have an older set will soon find their television outdated and in need of a converter box to receive HD.