It all started when Thomas Edison invented the phonograph. This opened up the idea of receiving and playing professionally produced entertainment at home. As the years went by, there have been many advances in technology and ways to transmit signals through the air waves into people's homes. After all, this is what it's mostly used for, to get programs into people's homes. Whether it be movies, commercials, instructional videos, music, PSA's, news, sports. Whoever creates these programs have the intention of letting somebody else watch t ....