While the storytelling medium of a television show may not have changed much, the way people tune in to their favorite programs has. Just 20 years ago, the patent for the first Internet-connected TV was filed in France. This year, more than 110 million U.S. adults watch a digital program using a connected TV.

"Over the span of just 20 years, the experience of watching TV and the business of advertising on TV have changed significantly," Videology CEO Scott Ferber said. "This year,­ 20 years after the first patent for connected TV was filed, we wanted to take a look back and see what events have led us to where we are today. Television is now digital, and digital is now television, and one thing is for sure: When it comes to TV, the only constant is change."

Take a look at television's journey over the last two decades from a Web-wired box to a digital portal, courtesy of Videology.