Digital Terrestrial TV
The transition from conventional to digital television offers many advantages for the viewer but also for broadcasters.
Thus the viewer has, among other things, a greater choice of programs, better interactivity but also a better visual and sound quality.
The action of transforming several separate digital streams into one in order to transmit it more easily.
Improvements in the audiovisual offer
Two main advantages are highlighted; improving visual and sound quality and increasing the number of programmes that can be broadcast.
The improvement in visual and sound quality is due to the new techniques that are used to transmit and compress programs.
Thus the phenomena of "snow", faded or drooling colors, tearing images will no longer exist with DTT. Indeed, digital is based on the principle of "all or nothing"; either the image quality is perfect, or there is no image.
The increase in the number of channels allows the emergence of new audiovisual players.
National regulatory bodies (the CSA in France) may allow the emergence of local channels or association channels.
Two different types of channels can be broadcast : pay channels and free channels. In some countries, such as France, it has been decided that the compression technique will not be the same for free channels as for pay-TV
Digital terrestrial TVTwo major types of broadcasting exist for television; the so-called analogue and digital television. The analogue television appeared the first. This is widely spread around the world. However, this type of diffusion is ageing and not very innovative.
For this reason analogue television is currently tending to disappear to give way to digital television. Digital television is largely based on analogue television. The
Pay channels will have increased visual quality and more accessible service.