Patent ID: 8826459

Claim:
A method comprising: storing within a memory device an application relating to stored multimedia content; receiving and storing new multimedia content within the memory device comprising: receiving new multimedia content for storage within the memory device; storing the new multimedia content within the memory device; transferring a mapping stored within the memory device of the new multimedia content on the memory device to a computer system; and modifying the mapping stored within the memory device relating to the new multimedia content to render it incorrect for any access to the new multimedia content other than via the application; and retrieving and rendering the new multimedia content comprising: receiving a request to render the new multimedia content; transmitting a request for the mapping of the new multimedia content to the computer system; retrieving from the computer system a predetermined portion of the mapping relating to a predetermined portion of the new multimedia content; and decrypting the predetermined portion of the new multimedia content associated with the predetermined portion of the mapping in dependence upon a decryption key, the decryption key being generated in dependence upon at least the data relating to the memory device and a rendering right associated with the new multimedia content received with the new multimedia content.