Method and apparatus for copy protection for various recording media using a video fingerprint.

摘要

METHOD AND APPARATUS FOR PROTECTION OF COPYRIGHT FOR VARIOUS MEDIA recording mode as digital video discs (DVDs) uses a combination of fingerprint signal VIDEO AND SIGNATURE AUTHENTICATION TO ALLOW THE PLAYER OPERATE ANY PROTECTED SUPPORT OR UNPROTECTED COPY, SO THAT IT IS DIFFICULT TO COMPROMISE. THEREFORE A SIGN OF FOOTPRINT AS A VIDEO authentication signature recorded ABOUT SUPPORT ONLY WHEN NEEDED copy protection. THE NATURE OF THIS SIGNATURE AUTHENTICATION is such that illegal copies made in CD burners will not transfer. WHEN PLAYING BOTH ORIGINAL DISCO DISCO ORIGINAL PROTECTED AS AN UNPROTECTED, THE PRESENCE OF ABSENCE OF AUTHENTICATION SIGNATURE causes the player to play the video program CORRECTLY. ALL ORIGINAL DVD plays THEREFORE NORMALLY. When playing a copy of a CD UNPROTECTED FOR THE PRESENCE OF SIGNAL VIDEO FOOTPRINT IS PROPERLY also causes DATA reproduce the video signal. However, when playing a copy of a CD protected, the lack of signature AUTHENTICATION causes PLAYER Prohibit the disc is played normally.