Satellite Television A Technological Wonder |
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| By John Mark Adams |
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| Satellite television is a broadcasting platform where the TV
programs are broadcasted by communication satellites. The TV
signals from the satellites are received by a circular
shaped antenna, which is also referred as dish TV antenna.
The signals from the dish antenna are then transferred to
the set top box or satellite receiver. From this device the
signals are transmitted to the TV set. So here you can see
that a typical satellite television kit contains two
important components. One is the satellite receiver and the
other one is the satellite receiver. Dish antennas play a major role in this TV broadcasting platform. Previously these things were made from costly metal units. They also used to be big in size and weighing almost a ton. Because of their large size, they used to take up huge space in a premise. The installation of early dish antennas was full of hassles. Today the satellite dish antennas have become smaller in size and you can install them on the rooftop or in the balcony of your residence. The antennas are now made with high quality plastics instead of heavy and expensive metals. This helped the antennas to become lightweight and affordable. The signals that are delivered from the communication satellites have a long path to follow before reaching to your television set. The TV signals, which are transmitted from the satellites, are high quality digital data. The data is then compressed by using a video file compression technology. The technology that is used for compressing the incoming satellite TV signals is MPEG. Compressing the incoming video data allows the broadcaster to deliver greater number of TV channels to its subscribers. Some of the service providers of dish TV in the United States are now broadcasting their TV programming contents in MPEG 4. This advanced compression technology is used for streaming video contents to the small screen devices such as personal computers, mobiles and PDA devices. This technology is highly efficient and is capable of generating brilliant images. In dish TV systems, there are five major components. They are the Dish Network Programming source, broadcast center, satellite, dish antenna and the satellite receiver. Programming source is actually referred to the channels that contain TV programs for broadcast. The TV contents are developed by some of the leading channel companies like HBO, ESPN, CNN, etc. Direct to Home or DTH service providers pay certain amount of fees to the channel companies to earn the right to broadcast the content via satellite. The next major component of DTH TV is broadcast center. It is the main control center of direct to home television platform. The signals from various programming source makes it entry to this place in the first stage. After that the signals are then released to geosynchronous satellites in space. The next component is the geosynchronous satellites whose jobs are to receiver the signals from the broadcast station and resend it to Earth. The last two components are the satellite receiver and the dish antenna. The job of a dish antenna is to get the signals from the satellites and the job of a receiver is to process the signals and transmit that to a TV set. This is how satellite TV works. |
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| Article Source: http://interpret.zar.vg | ||||
| About The Author For more information about satellite TV channels and services, please get in touch with your respective Dish Network Programming provider. |
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