198753 ⎘
Signal processing not specific to the method of recording or reproducing; Circuits therefor; Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein said number is encoded as a cryptographic token or ticket
Technologies for provisioning cryptographic keys
#2Optional data encryption by partition for a partitionable data storage library
#3Method and device for distributing electronic documents
#4DVD identification and managed copy authorization
#5Optional data encryption by partition for a partitionable data storage library