The first television was launched in the United States of America in the year 1930 and it is only then, the TV broadcasting came into existence. Since then television has always played a crucial role in socialization and proved itself an important toll of mass communication across the globe.
The broadcast of video and audio by digital signals in contact to the analog signals used by analog TV is called television broadcasting. There are several countries that are replacing over the air broadcast analog television with digital television to allow other uses of the radio spectrum formerly used for analog TV broadcast. It has been more than 50 years now that broadcast television is a part of our lives. In United States, television has completed transition from analog to digital broadcasting.
The consumers through analog antennas receive local television signals and they use converter boxes to obtain programming on TVs. In the last few years, deadline was pushed back many times as both broadcaster and consumer were not able to meet the FCC’S criteria for successful transition to digital broadcasting. Nowadays, television can be scattered in so many ways i.e. from the old analogue television radio, broadcasts through the new digital methods of radio delivery to IP based delivery over wired networks such as the internet. Digital TV broadcasting are formatting and encoding standard for the reception and transmission of analog television signals. Now, there are three main analog i.e. SECAM, NTSC or PAL television systems that are used across the globe.






