Digital data file encryption apparatus and method and...
Digital data file encryption apparatus and method and...
Digital data system
Digital information recording apparatus and outputting...
Digital licenses that include universally quantified variables
Digital literary work protection system and digital literary...
Digital media delivery with local cache and streaming tokens
Digital right management system, content server, and mobile...
Digital rights management (DRM) encryption and...
Digital rights management apparatus, methods and multimedia...
Digital rights management method and digital rights...
Digital rights management using trusted time
Disk control unit
Disk control unit
Display device preventing unauthorized copying
Distributed dynamic security for document collaboration
Distributing access to a data item
Distributing access to a data item
Distributing digital-works and usage-rights to user-devices
Distribution system, semiconductor memory card, receiving...