Definition of Digital Television

The so-called “silly box” has long since stopped being so “silly” to offer a certain degree of interactivity and greater diversity of contents. In any case, the possible "nonsense" is already due only to the contents ...

In binary

The most important difference between “traditional” and digital television is that the latter broadcasts encoded in Format binary, leaving a free channel for sending information from the receiver to the transmitter, whereas the television of all the life emitted in analogical without leaving space to a channel of feedback from the reception to the source of the emission.

Types of digital television

The differences between the different ways in which digital television is offered responds to a mixture of reasons, ranging from the most purely commercial to those that have been purely the result of technical progress.

For example, DTT (Digital Terrestrial Television) corresponds to the television standard that replaces TV conventional

, and that allows not only open broadcasting with interactive services, but also paid content, that is, channels that can be hired separately and decoded through the use of a card.

Television by satelite and cable "fight" to gain market share. It is not public television in the sense that the signal is not distributed by the air open and can be captured by any device on the market, but you have to make a installation previous.

In the case of satellite television, you must install an antenna focused on the correct satellite, and a signal decoder connected on one side to said antenna and on the other to the television or video recorder. video.

With regard to cable television, this cable is the fiber optic cable through which, in addition, the signal from Internet and telephony. Requires the cable to arrive at the consumer's home /Username, and that the appropriate decoder is installed.

In both cases, packages are contracted that include a basic number of channels and the others can be purchased in addition.

IP Television (IPTV) allows us to do with the conventional copper cable through which the ADSL reaches us, the same as is done with the fiber cable optical, that is, to send us digital television by reserving part of the bandwidth to ensure that the signal reaches us correctly.

Photos: iStock - Warchi / Mehmet Barcin

Topics in Digital Television