The U.S. Copyright Office in response to a request to provide a copy exemption for consumers that want to watch their legally-owned DVD content on devices that do not have disc drives, has ruled (via the Librarian of Congress) that it is illegal to bypass DVD copy-protection codes (known as the Content Scrambling System - CSS) in order to make digital copies for playback from PC hard drives, USB flash drives, tablets, or other non-disc drive equipped devices.
The DVD Copy Control Association was able to argue that when a consumer purchases a DVD, they only have the rights to play that DVD. In essence this ruling shuts down the legal availability of software/hardware devices that allow you to copy a DVD onto hard drives.
“While copyright owners are taking tentative steps to link motion pictures purchased on DVD to digital versions playable on new devices [UltraViolet and other digital copy initiatives], there is no indication that this program — if successful and sustainable — would apply retroactively to the millions of DVDs already lawfully owned by consumers and purchased when DVD was the only format available to them,” Public Knowledge argued.