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How the DTH Works!

DTH- as its abbreviated as Direct to Home connection, is one of the changing technologies in the satellite communication...

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Components for DTH transmission

The DTH receives channels from the rightful owners like the HBO, Sony, WB etc. and broadcasts them on their DTH services for a fee, to obtain alicense in broadcasting. So, basically, the DTH companies are mediators...

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How the DTH Works!

DTH- as its abbreviated as Direct to Home connection, is one of the changing technologies in the satellite communication industry. It changed the way people watched programs on Television, in fact, the whole purpose of TV.

Until the technology invention, there were hardly few channels for the public to know about the happening around the world, and the quality too wasn’t that great. But today, there are hundreds of channels in different genres catering to every individual’s needs, right from small children to aged folks. We all are addicted to the Idiot box, what was called earlier. It’s actually an idiot box, for those who exploit it to leaps and bounds without much productive work.

For the rest, it’s surely a form of entertainment and an information centre. You get to know the latest news and happening around the world in ajust fraction of minutes sitting at the place that you live in. be it at theoffice or at home, when you have this friend, you needn’t worry about any news going unnoticed. There are many new releases in them, added features which enable you to record the show and play it when you are free.

DBS – Direct Broadcast Satellite TV installation, wall bracket mounting service was the predecessor for the DTH. It was developed with an intention of providing high-quality satellite signals having a huge number of channels across all the genres. It was way before DTH came alive. Only later did DTH come a successor of DBS.

In simpler terms, it refers to broadcasting satellite signals to an individual home using a personal dish. Geostationary satellites are used for this purpose.

For DTH transmission to happen, the following components are necessary:

  • A Broadcasting centre
  • Satellites
  • Encoders
  • Modulators
  • Dish Receivers
  • DTH Receivers

The DTH receives channels from the rightful owners like the HBO, Sony, WB etc. and broadcasts them on their DTH services for a fee, to obtain alicense in broadcasting. So, basically, the DTH companies are mediators between the channel owners and consumers.

The Broadcast centre:

This is the most important point in the whole DTH System. This centre receives signals from various sources and broadcasts are sent to the satellites for broadcasting them on TV.

Satellites

They are the fundamental components in this process. The signals are received by the satellite sent from the broadcasting centre and are processed and compressedtherein a suitable form to be re-sent to the earth in a way as acceptable by the dishes.

Encoding:

The file at the broadcast centre goes through a process called encoding. Here the high-quality video stream goes through a MPEG encoder and reduces the size of the file by removing any redundant and irrelevant data from it. It happens in 3 ways:Intraframe;predicted frame, bi-directional frame.

Encryption:

After encoding, encryption happens in order to safeguard them from free access. Encryption allows the data to be only decrypted using certain signals and tools, thus eliminating unnecessary free usage of the satellite communication.

Modulators:

The work of modulators is to enhance the signal that is transmitted, to regain any signal which might be lost during the transmission process.

Dish Receivers:

These devices receive the signals sent from satellites and transmit to the viewer’s device, ie TV.  The Dish receives the signals first and sends it to the receiving equipment. The dish can only ‘receive’ the data; it can’t do anything apart from this.

DTH or Satellite Receivers:

The rest of the work is carried by the receiver – DTH receiving equipment’s that decrypt the data and transmit them to the TV.

Sometimes the dishes receive signals from more than one satellite, which reduces the quality of the information stored. Hence the LNB are used to enhance the signals and give a quality output.

The job of the receiver is as follows:

Decrypt the encrypted signal

Converting the digital signals into analogformat that the standard TV can recognise

Extract the individual channels from the sea of info obtained.

Tracking of pay-per-view programs of customers and periodically rings a computer at the providers HQ for payment information.

So, this is the whole process of the way a channel is broadcasted on TV, that we watch with a click of buttons and remote. We hope you now have some productive information about the Box that you might be mis-using, mis-using the whole technology that is so carefully drafted.