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How Stuff Works: DVDs and DVD Players E-mail
Written by TestFreaks   
Wednesday, 23 September 2009

How Stuff Works: DVDs and DVD Players

Nobody needs to be told about the impact that DVDs, and now Blu-Ray, have had on our home entertainment standards. It's become all we know in regards to tangible home movie solutions, obliterating the VHS tape out of our lives and sending our VCRs to the bottoms of closets, basements, and landfills. No longer do we rewind, fast forward and waste time shuffling through miles of tape for crummy video quality. We jump, we skip, we zoom, we watch bonus features and we do it all in HD quality with Dolby Digital sound.

Though you may have hundreds of your favorite films kept on these fantastic shiny discs, do you really know how they function? It's not just a piece of plastic. Do you know how they store their data, interact with your player and remote, and get images and sound to your TV and speakers? Many people are clueless about how a DVD disc and player actually works - they just know they should keep from abusing the shiny part, and shouldn't use it as a coaster. While those things are very true, there's a lot more to a DVD than sticking it in your player and waiting for the lion to roar. Let's take a layman's look at a DVD's anatomy and how a DVD player reads it to craft the movie and sound stored within.

Consider an LP record. These records are vinyl discs with all sorts of bumps and grooves across their surface. The needle slides through the groove and feels the ups and downs in the record, which produce the sound you hear. This concept is similar for DVDs, but with advanced technology. TestFreaks


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