http://www.articleheaven.net en-us editorial@articlealley.com In 1997 DVD revolutionized the movie industry and within couple of years almost completely replaced VHS system. But the technology is moving very fast and now DVD is facing a big challenge from blu-ray technology. Blu-ray introduced high defination audio ... http://www.articleheaven.net/bluray-dics-929045.html 12th June 2009