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Monday, April 18, 2011

TV at home - cable television

Author:

Joe Dugan

Television is something that every person likes to watch at home when he/she has few minutes of spare time. Television has become something like a necessity.
Since the first television set appeared many changes took place in the development and nowadays everything is completely different from that time. The same thing has happened to the way of reviving the signal for the television programs. At first the programs were broadcasted by TV towers and received by the television set with the help of antenna. And with the development of the technologies the ways of receiving television programs has changed. Nowadays there is cable TV, satellite TV, digital TV from satellite or cable and more.
Nowadays the most spread way of having television is by cable TV. This type of television has gained widespread name of system to carry television signals through fixed coaxial cable. Fact is that due to the limitations in the transmission environment and the following rapid development of technologies for optical transmission, increasingly is dominating the hybrid fiber-coax network. But let us get back to our subject – cable TV. The traditional cable TV works with analog channels. And with the advent of newer technologies and the increased demand for newer and more complex services by customer, cable television undergoes significant changes in technology transfer. Originally unidirectional channels were replaced by bidirectional. This is a direct consequence of the requirement of digital television for feedback from the client to the headquarters.
Another relatively new service offered by cable television is to provide internet access through the so-called cable internet. Thanks to the improvement of technology for digital transmission of information, this service is becoming more popular. The reason for that is that you have already been provided with a cable so you will not need a new one. This service allows relatively high speed access to external networks. The advantage of this type of access is the ability to implement the quality of service, which in practice cannot be ensured to the extent of the other widespread methods for the customers\' access to share resources as Ethernet, xDSL and others. The basis of this type of access used set of specifications DOCSIS, which means Data Over Cable System Interface Specification. In some countries, this type of cable TV is called digital, which is terribly wrong. If you have a little knowledge of electronics and more specially signals you should know that digital signal could not be transmitted throughout analogue environment.
Nowadays cable TV companies are offering 3 different services through one cable – television, phone and internet. This is done by the help of analogue-digital converter, which decodes the coded signal and is able to divide the 3 different signals coming from the cable.
The word for cable TV in Danish is Billigt Kabel TV. If you need more information about it, visit this website. Although it is in Danish you can translate it with Google Translator. To see if living without cable TV is possible, click on this link.
Article Source: http://www.articlesbase.com/cable-and-satellite-tv-articles/tv-at-home-cable-television-4610347.html
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