In a digital information recording/reproducing apparatus, information recorded on a hard disk with copy restriction thereof is protected from being copied onto other hard disks by means of a PC, etc., to be produced a large number of illegal copies, i.e., infringing a copyright....http://www.google.fr/patents/US7856560?utm_source=gb-gplus-shareBrevet US7856560 - Digital information recording apparatus and recording/reproducing apparatus
Digital information recording apparatus and recording/reproducing apparatus
