| 摘要 |
THIS INVENTION CONCERNS A SYSTEM AND A METHOD OF TRANSMISSION AND STORAGE OF AUDIO/VIDEO DATA (DT) IN ENCRYPTED FORM BETWEEN A DISTRIBUTION CENTRE (VS) AND AT LEAST ONE EXPLOITATION MODULE (STB), INSTEAD OF TRANSMITTING THE INFORMATION ALLOWING THE DECRYPTION IN PARALLEL TO SAID DATA, THESE INFORMATION ARE REGROUPED IN A DECRYPTION DATA FILE (MD) COMPRISING ALSO THE DATA THAT DEFINE THE ACCESS CONDITIONS TO SAID AUDIO/VIDEO DATA. THIS FILE IS STORED INDEPENDENTLY FROM SAID DATA AND CAN BE USED FOR EITHER AN IMMEDIATE USE OR A DEFERRED ONE. (FIG. 1) |
