Digital TV is really a way of sending a description of the television signal rather
than the physical signal itself. Chapter 2 describes the basics of digital television
along with fundamental principles for compression of signals. The intention has been
to make a simple visual description of video compression.
The compressed TV signals need to be transported and to do this the Digital Video
Broadcasting (DVB) transport stream may be the tool. This transport stream format
is described along with ways to optimize the number of TV channels to be carried
in a satellite transponder. The chapter contains 13 illustrations 4 of which are
in the color insert.
Digital TV is different from analog TV when it comes to distortions. Either you have
a perfect picture or no picture at all. However there is a very narrow range between
acceptable reception and loss of signal where you will see blocking effects in the
picture.
© Lars-Ingemar Lundström, All rights reserved.
