Digital Television
Technology and Standards
Chapter One
Introduction to Analog
and Digital Television
1.1. INTRODUCTION
From small beginnings less than 100 years ago, the television industry has grown
to be a significant part of the lives of most people in the developed world, providing
arguably the largest single source of information to its viewers.
The first true television system was demonstrated by John Logie Baird in the
1920s. Further experiments were conducted in the following decade, leading to trial
broadcasts in Europe and the United States, and eventually to the regular television
service we know today. Originally, only monochrome pictures were supported.
Color television was introduced in the United States in 1954 and in Europe in 1967.
Television systems have evolved as simplex transmission systems, as shown in
Figure 1.1. The term simplex means that information flows only in one direction
across the channel. A transmitter, whose antenna is usually mounted on a tall tower,
broadcasts a signal to ... read full excerpt from Digital Television: Technology and Standards ebook
