Understanding Home Theater: Home Entertainment history of, what is, how-to guides?

This is a beginner’s forum to the world of home entertainment and media in its various guises. Here we discuss the basics in home theater technology, concepts and terminology. Looking at such subjects as, what is the history of Blu Ray and digital media? What is the difference between analog and digital TV? What is IMAX? DLP? DVI? HDMI? We also provide help and guidance for those setting up a home entertainment center or individual composite parts such as a DVD player, surround sound system or satellite receiver.