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Digital TV – What You Need To Know

Digital TV

Digital TV is here to stay, but you may find yourself with questions about it. Find your answers here.

Your traditional television is known as an analog television. It works by encoding the picture and sound information as an analog signal. The picture on an analog television is drawn on the screen one entire frame at a time. The analog signals are transmitted continuously even if there is no new information to send.

Digital Signals

A digital television receives information as a digital signal. It won’t be long before this technology will replace the analog television system altogether. The digital signals are transmitted using computer code, which consist entirely of ones and zeroes. This is a difficult concept to perceive but it works. Digital signals are much more efficient, result in less interference and therefore it provides a better quality picture and sound than analog.

Smaller Channel Bandwidth

Another significant feature of digital television is that is uses a significantly smaller channel bandwidth. This means there is more ‘space’ for other digital channels which will allow other non-television services such as pay-multimedia services, multicasting (more than one program on the same channel), electronic program guides and interactivity to be used at the same time. While digital television often has superior audio quality, image, and reception than analog and continues to improve as technology introduces new possibilities.

Quality Levels

As with most things in today’s modern society Digital Television comes in a couple of quality levels:-

    • Standard Definition TV (SDTV) – This is the basic level of digital television transmission. It has a quality similar to today’s analog TV;
    • Enhanced Definition TV (EDTV) – This gives a better level of quality and includes Dolby digital surround sound;
    • High Definition TV (HDTV) – This as the name suggests gives the best quality digital picture and Dolby digital surround sound.

You probably remember a few years ago when the major television networks stopped broadcasting in analog, which meant that if you were using an analog TV, you needed a converter box.

Are you still using that converter box today? We want to here from you about things technology. Contact DiverseNet Inc today for questions or comments related to this or other topics that interest you!

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