198756 ⎘
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 limits the data access speed, e.g. by defining a maximum bit rate of the I/O interface
Method and system for protecting data, storage device, and storage device controller
#2Device and method for preventing unauthorized reproduction of content
#3Apparatus and method for writing and reading data to and from tape medium