Ever since Thomas Edison introduced the first commercially available motion picture projection device in the late 19th century, society has fallen in love with the idea of ​​recording and playing back events as "moving" images ”, and the 20th century marked a rapid progression of such technology. Initially, video playback was expensive and inconvenient, which meant consumers had to frequent theaters to enjoy their favorite films. The next advancement came in the 1970s with the development of the Video Home System (better known as VHS), which led to the advent of VCRs and the ability to view “videotapes” in the comfort of your own home. Subsequently, the explosion of microelectronic and digital technology enabled a new video playback device, first commercially available in 1996. This new technology harnessed the power of digital data storage and cutting-edge semiconductor technology optical and electronic to give users the best home theater experience. What exactly am I referring to? You guessed it, the now ubiquitous DVD. The acronym "DVD" originally stood for Digital Video Disc, but as this versatile technology found more and more uses in non-video applications, it became known to many as Digital Versatile Disc. . Officially the members of the DVD Forum (run by Toshiba) never made a decision on the matter, so the name of the format remains "DVD" and the meaning of the "V" remains ambiguous. But despite the confusion over the acronym, DVD has taken the world by storm. As DVD technology has evolved, two factors have made DVD players incredibly attractive and successful: a combination of its simple interface and its incredible power and capacity. Digital microprocessor/mi...... middle of paper ......st, as they say, is history. By 2003, DVD sales and rentals had surpassed those of VHS, and DVD player sales had reached over 65 million worldwide, just a handful of years after their introduction in 1997. Clearly, the DVD standard had solidified his place in society. The DVD player contains additional features such as digital rights management (DRM) to prevent movies from being copied. These security features also include a content encoding system (CSS) and a region code, which are also aimed at preventing piracy. Players must be able to decode both CSS and region coding, providing additional protection and ensuring that a player sold in a particular country will not play discs encoded for a different country. Although DVD player technology continues to evolve, its prevalence is undeniable: in 2008, more than 85 percent of homes in the United States owned a DVD player..